JP4961578B2 - Support and furniture with top plate - Google Patents

Description

  The present invention relates to a support and furniture with a top plate provided with the support.

  2. Description of the Related Art Conventionally, various furniture with a top plate including a support body supported by a base and a top board supported by the support body are known.

  As an example, there is one in which the relative position of the top plate to the base can be changed by changing the relative position of the support to the base. Specifically, a plurality of fitting holes with which a part of the support body can be fitted are formed at a predetermined pitch on the base, and the position of the top plate relative to the base can be changed by changing the fitting position of the support body. The mode which was made can be considered (for example, refer patent document 1).

In addition, as an example of furniture with a top plate that allows the top plate to turn horizontally, a plurality of screw holes are formed on the lower surface of the top plate, and the screws provided on the support are screwed into the selected screw holes. In addition to restricting the swivel movement of the plate, the top plate can be swung by releasing the screwed state by turning the screw, and after setting to a predetermined swivel angle, the screw hole is screwed again into a screw hole different from the screw hole. The aspect which made it possible to fix a top plate by the said rotation angle by screwing is mentioned (for example, refer patent document 2).
JP 2004-159713 A (see FIG. 1) Registered Utility Model No. 3044255 (see FIG. 1)

  By the way, when trying to provide furniture with a top plate that can change the relative position and turning angle of the top plate with respect to the base by combining these conventional techniques, an operation for changing the relative position of the top plate, that is, one of the supports. An operation to remove the part from one fitting hole and reattach it to the other fitting hole, an operation to change the pivot angle of the top plate, that is, an operation to remove the screw from one screw hole and reattach it to the other screw hole. Each of which is necessary, resulting in inconvenience that the operability and practicality are inferior.

  The present invention has been made paying attention to such a problem, and the main object is to allow a state in which the relative movement and change of the relative angle of the top plate along the extending direction of the base are restricted by one action. It is providing the support body switchable between states and the furniture with a top plate provided with such a support body.

  That is, the support body of the present invention is supported by a base extending in a predetermined direction so as to be slidable and can support the top plate so as to be capable of horizontally turning, and a movement regulation state that regulates sliding movement with respect to the base. , A slide switching mechanism that can be switched between a movement-permitted state that allows sliding movement relative to the base, a turning-restricted state that restricts horizontal turning of the top plate, and a turning-permitted state that allows horizontal turning of the top plate And a switching operation interlocking mechanism that interlocks the switching operation of the slide switching mechanism and the switching operation of the rotation switching mechanism.

  If this is the case, the operation force for operating the switching operation interlocking mechanism can be applied, that is, the switching operation between the slide switching mechanism and the turning switching mechanism can be interlocked by one action, Compared to the mode in which the switching mechanisms must be individually switched, the operability is excellent.

  In particular, the switching operation interlocking mechanism includes a single operation unit, and applies a predetermined operation force to the operation unit, whereby the switching operation of the slide switching mechanism and the switching operation of the turning switching mechanism are performed. For example, an operation unit for switching the slide switching mechanism and the turning switching mechanism from each permissible state (sliding permissible state, permissible turning state) to each regulation state (slide regulation state, turning regulation), and each regulation. The number of parts can be reduced and the user can intuitively grasp the operation method as compared with a mode in which the operation unit for switching from the state to each allowable state is different.

  Further, the operation unit is capable of horizontally turning, and the slide switching mechanism is switched from the movement restricted state to the movement permitted state by applying an operation force that the user always pulls regardless of whether the operation unit is forward or backward. At the same time, since the turning switching mechanism is switched from the turning restricted state to the turning permitted state, the operation method for switching each switching mechanism from the restricted state to the permitted state is the same regardless of the standing position of the user with respect to the top plate. Therefore, it becomes excellent in practicality. Moreover, compared with the aspect which requires the operation force to press, the stable operation force can be continued and switching operation can be performed exactly.

The base has a guide portion provided continuously along the extending direction, and the slide switching mechanism has a rolling element and a contact body, and either the rolling element or the contact body has a tip portion. The movement restriction state in which the contact body is brought into contact with the guide portion in preference to the rolling body by the movement of the horizontally turnable link provided on the contact portion, and the contact state between the contact body and the guide portion Can be switched between a movement allowable state in which the rolling element is brought into contact with the guide portion, and the turning switching mechanism is provided integrally or integrally on the lower surface side of the top plate. It is provided with a retractable body that can be moved between a retractable position at which the insertion target portion can be inserted and an insertion release position where the insertion state is released, and the insertion target portion is moved by moving the retractable body. With the gripped, pull it downward and A turning restriction state in which horizontal turning of the top plate is restricted by being brought into contact or pressure contact with a part of the support, and a turning permission state in which horizontal turning of the top plate is permitted by releasing the swaging state. Between the non-pressing position where the switching operation interlocking mechanism does not press the proximal end portion region of the link and the pressing position where the proximal end portion region of the link can be pressed. A movable link pressing body, and an operating portion provided integrally or integrally with the retractable body and the link pressing body, and when a predetermined operating force is applied to the operating portion, Based on the operating force, the link pressing body is moved between the non-pressing position and the pressing position to move the link, and the retractable body is moved into the retractable position and the retracting position. That move between In addition to simplifying the structure of the switching operation interlocking mechanism, by applying the operating force to the operating unit and rotating the link pressing body and the retracting body together with the operating unit, the slide switching mechanism and the turning switching are performed. The switching operation with the mechanism can be reliably linked.

  In addition, the operation portion is capable of horizontal turning, and the link pressing body horizontally turns between the non-pressing position and the pressing position in accordance with the horizontal turning of the operation portion, and the retracting body is If horizontal swiveling is performed between the swivelable position and the swivel release position, each operation region of the swivel switching mechanism and the switching operation interlocking mechanism can be set in a horizontal plane, and the entire support body is unnecessarily bulky. You can avoid that.

  The link pressing body is provided with a support portion that supports the retractable body and the operation portion at one end portion, and a bifurcated pair of pressing portions that can press different portions in the vicinity of the base end portion of the link at the other end portion. When the body body is provided and can be turned together with the retractable body and the operation portion around a vertical axis provided at a branch point portion of the pressing body body, and the operation portion is positioned at a normal position, The link pressing body is positioned at a non-pressing position where none of the pressing body main body presses the area near the base end of the link, and the operation section is horizontally turned from the normal position in either the forward or reverse direction. The link pressing body is positioned at a first pressing position where one of the paired pressing body main bodies presses a region in the vicinity of the base end of the link, and the operation section is moved forward and backward from the normal position. Water in either direction In the case of turning, the link pressing body is positioned at a second pressing position in which the other of the pressing body main bodies that form the pair presses the proximal end portion vicinity region of the link, and the non-pressing position of the link pressing body If the slide switching mechanism can be switched between the movement restricted state and the movement allowed state by horizontally turning the link in conjunction with the movement between the first pressed position and the second pressed position. Since the link pressing body can be moved from the non-pressing position to the first pressing position or the second pressing position by horizontally turning the operation unit regardless of the forward and reverse directions, only the operability is excellent. In addition, the operation force applied to the operation unit can be reliably transmitted to the link via the link pressing body, and the switching operation of the slide switching mechanism can be performed accurately.

  In order to be able to perform the switching operation of the slide switching mechanism and the turning switching mechanism with a light operating force, the link is pressed while being in contact with the proximal end portion region of the link at the distal end portion of the pressing body. What is necessary is just to provide the link press rolling element which can do.

  Moreover, as an aspect which prevents that the contact state or press state of a link press rolling element and a link is cancel | released unexpectedly, the aspect which provides the collar part which regulates the vertical motion of the said link in the said link press rolling element Is mentioned.

  The guide portion is a rail groove, and the rail groove is provided in a pair at a position spaced apart in the height direction of the base. Each rail groove has an opening-side standing wall provided on the opening side, and an opening. A rear side standing wall provided opposite to the opening side standing wall, and the slide switching mechanism is in contact with the opening side standing wall of the upper rail groove or If the upper side contact body and the upper side rolling element to be in contact with each other, and the lower side contact body and the lower side rolling element to be in contact with or in contact with the rear side standing wall of the lower rail groove, Compared with the mode in which each abutment body abuts or abuts on the upright wall on the same side in each rail groove, each abutment body and each abutment body are moved to the upper rail by the load of the support body and the support object. Securely on the standing wall on the opening side of the groove or on the far side wall of the lower rail groove Can be contact or spliced, strong movement restricted state, it is possible to realize a movement permission state with excellent sliding properties.

  Further, each of the above-described contact members is provided with a synchronization mechanism that synchronizes the movement of the upper contact member and the lower contact member, or the movement of the upper rolling member and the movement of the lower rolling member. Compared with the mode of moving individually for each contact body or for each rolling element, this contributes to improvement in operability.

  As a preferred embodiment of the synchronization mechanism, an upper link in which either one of the upper contact body or the upper rolling body is provided directly or indirectly on a tip portion, and the lower contact body or the A lower link in which either one of the lower rolling elements is provided directly or indirectly at the tip, and a link shaft that is a common rotation axis of the upper link and the lower link. A mode in which the movement of the contact bodies or the movement of the rolling bodies is synchronized by horizontally turning the upper side link and the lower side link around the link axis based on the predetermined operation force. In this case, with the virtual straight line passing through the center of the vertical axis and substantially orthogonal to the slide movement direction as a boundary, the tip of the upper link is positioned in one area, and the lower link is located in the other area. If the upper link and the lower link are rotated about the vertical axis, the upper contact body or the upper rolling element provided at the front end of the upper link is positioned. Is moved toward the opening side standing wall of the upper rail groove, and either the lower contact member or the lower rolling member provided at the tip of the lower link is moved downward. The upper side link and the lower side link can be moved in the opposite direction around the vertical axis, and the upper side link can be moved toward the distal end of the upper side link. The above provided The lower contact member provided at the tip of the lower link while moving either the side contact member or the upper rolling member in a direction away from the opening side standing wall of the upper rail groove Or any one of the said lower side rolling elements can be moved toward the said rail groove back side standing wall.

  In order to prevent deformation of the upper side link and the lower side link and to ensure a good operating state of each link, it is preferable to interpose a link reinforcing body between the upper side link and the lower side link.

  If a plurality of the slide switching mechanisms are provided along the slide movement direction, a more stable movement restriction state and movement permission state can be realized.

  In order to facilitate the switching operation of each slide switching mechanism even if it is provided with a plurality of slide switching mechanisms, the slide switching mechanisms are connected to each other based on the operating force applied to the operation unit. It is desirable to have a slide switching interlocking mechanism that interlocks the switching operation.

  As a preferred embodiment of the slide switching interlocking mechanism, a common link pressing body capable of pressing the area near the base end of the link of each slide switching mechanism is provided, and the link pressing body is operated based on the operation force. Thus, there is a mode in which the links of the slide switching mechanisms are rotated and either one of the contact bodies or the rolling bodies provided at the tip ends of the links is moved in conjunction with each other.

  On the other hand, the following aspects are mentioned about a turning switching mechanism. That is, the support body is provided with a frame body arranged on the lower surface side of the top plate, and the retractable body can be in direct contact with or in pressure contact with the target object, and the retractable body. A submerged body that is integrally or integrally provided with the main body and that can sink under a part of the frame body in a state of being in contact with or pressed against a part of the frame body, It is possible to turn horizontally between the turning release position, and in the process of switching the turning switching mechanism from the turning permitted state to the turning restricted state, the submerged body is brought into contact with or pressed against a part of the support body. However, the retractor body is retracted downward by being submerged below a part of the support. If this is the case, the retractable body is pulled in by lowering the retractable body into a part of the support body as the retractable body rotates horizontally. It is possible to more accurately perform the downward pulling of the portion, and hence the downward pulling of the top plate.

  In order to smooth the retracting operation of the retractable body with respect to the retracting target portion, an arcuate or tapered scavenging guide portion may be provided in the retractable body main body.

  In addition, in order to smoothly perform the intrusion operation of the submerged body with respect to a part of the frame body, the submerged body may be provided with an arcuate or tapered submerged guide portion.

  A priority support portion that contacts the lower surface of the top plate with priority over other parts at any turning angle that can be taken by the top plate, and the retractable body that is positioned at the swivelable position is a support region by the priority support portion. If it is made to be positioned inside or in the vicinity of the support region, the region where at least the insertion target portion is provided in the top plate in accordance with the operation of drawing the insertion target portion downward by the retractor, and the insertion target portion The vicinity of the provided region can be supported in contact with or pressed against the priority support portion with certainty, and a good support state can be maintained.

  Further, it is connected to the top plate through a lifting operation permission mechanism that allows relative movement in the direction in which the top plate is lifted, and the turning switching mechanism allows the top plate to lift in the turning permission state, If the lifting operation of the top plate is restricted in the turning restriction state, the turning switching mechanism also functions as a lifting operation restriction mechanism that restricts the relative movement of the top plate to the support in the lifting direction. There is no need to provide a lifting operation restricting mechanism, and the mechanism can be shared and the structure simplified.

  Moreover, the furniture with a top plate according to the present invention includes a base having a guide portion provided continuously along the extending direction, and the above-described support body supported by the base so as to be slidable using the guide portion. And a top plate supported by the support body so as to be horizontally rotatable.

  As described above, according to the present invention, the slide switching mechanism can be switched between a state in which relative movement and a relative angle change of the top plate in the lateral direction with respect to the base are restricted and a state in which the change is allowed by one action. In addition, it is superior in operability as compared with the aspect in which the turning switching mechanism must be individually switched.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The support 4 according to this embodiment is applied to the desk 1 shown in FIG.

  As shown in FIGS. 1 and 2, the desk 1 includes a base 2 that extends in the horizontal direction, a base support 3 that supports the base 2, and a support that is slidably supported along the base 2. 4, a top plate 5 having one end supported by the support 4, and a leg 6 that supports the other end of the top plate 5 and grounds on the floor surface. FIG. 1 shows an office configuration system formed by connecting two such desks 1, and supports a top board 5 X different from the top board 5 on the base 2 of each desk 1. I am letting. This top plate 5X is a cantilever type supported only by another support 4X different from the support 4 according to the present invention, and cannot be slid relative to the base 2.

  As shown in FIGS. 1 and 3 and the like, the base 2 has a substantially quadrangular prism shape extending substantially linearly. A rail groove 21 that functions as a top plate guide portion (corresponding to the “guide portion” of the present invention) for guiding the movement of the support 4 to a pair of upstanding surface portions 2A facing each other along the longitudinal direction of the base 2. , 22 are provided. In the present embodiment, a pair of rail grooves 21 and 22 extending along the longitudinal direction of the base 2 are formed on each of the standing surface portions 2A so as to be spaced apart from each other by a predetermined pitch in the height direction and parallel to each other. In the following description, the rail groove formed on the relatively upper side is referred to as “upper rail groove 21”, and the rail groove formed on the lower side is referred to as “lower rail groove 22”. The upper rail groove 21 and the lower rail groove 22 have substantially the same shape, and the height dimension of the internal space (inner air height dimension) is set larger than the height dimension of the opening (opening height dimension). Is. In the following description, among the standing walls facing each other in each rail groove 21, 22, the opening side standing wall is referred to as "opening side standing wall" ("opening side standing wall 21a of upper rail groove 21", "The opening side standing wall 22a of the lower rail groove 22"), and the rear side standing wall is "the rear side standing wall" ("the rear side standing wall 21b of the upper side rail groove 21", " The rear side standing wall 22b "). In addition, each opening side standing wall 21a, 22a is extended toward the downward direction from the upper edge part of each rail groove | channel 21,22.

  The upper surface 2B of the base 2 is provided with a rail groove 23 that functions as an optional member guide for moving and guiding an optional member (not shown). In the present embodiment, a plurality of rail grooves 23 (five in the illustrated example) are formed on the upper surface portion 2B so as to be spaced apart from each other by a predetermined pitch in the short direction of the base 2 and to extend parallel to each other. The relative position of the option member relative to the base 2 can be changed by sliding the option member (not shown) along the rail groove 23. Optional members include desktop panels and task lights.

  Each of the rail grooves 21, 22, 23 is formed from one end of the base 2 to the other end. Further, end caps 2C are detachably attached to both ends of the base 2 (see FIG. 1; in the drawings other than FIG. 1 (FIG. 3, etc.), the base 2 with the end cap 2C removed is attached. Shown).

  As shown in FIG. 1, the base support 3 supports both ends of the base 2. The base support 3 has, for example, a prism shape or a square pipe shape having a depth dimension substantially the same as the short dimension of the base 2, and a plurality of desks 1 are arranged so that each base 2 is continuous along the longitudinal direction. In the office configuration system that is continuously provided, the first auxiliary base support 31 is integrated with the base support 3 positioned at both ends as viewed from the entire office configuration system by a suitable means among the plurality of base supports 3. As a result, the second auxiliary base support 32 is integrally assembled to the other base support 3 by an appropriate means to realize good self-supporting and stability of the entire office configuration system.

  As shown in FIGS. 2 and 3, the support body 4 allows the frame body 4 </ b> A disposed on the lower surface side of the top plate 5, the movement restriction state for restricting the sliding movement with respect to the base 2, and the sliding movement with respect to the base 2. The slide switching mechanism 4B that can be switched between the movement-permitted states and the swivel that can be switched between the swivel-restricted state that restricts the horizontal turn of the top plate 5 and the swivel-permitted state that allows the top plate 5 to turn horizontally. The switching mechanism 4C includes a switching operation interlocking mechanism 4D that interlocks the switching operation of the slide switching mechanism 4B and the switching operation of the turning switching mechanism 4C. In the following description, the base 2 side of the support body 4 is the rear, and the opposite side (the anti-base 2 side) is the front.

  As shown in FIGS. 4 and 5, the frame body 4 </ b> A includes a pair of opposed frames 4 </ b> A <b> 1 that are substantially orthogonal to the longitudinal direction of the base 2 and are opposed to each other while being supported by the base 2, and the distal end side of the opposed frame 4 </ b> A <b> 1. The front frame 4A2 positioned on the rear side and the rear frame 4A3 positioned on the rear end side of the opposing frame 4A1 are integrally rigidly coupled. In the present embodiment, the opposing frame 4A1 and the front frame 4A2 are connected by bolting or the like via the corner connector 4A4. Each opposed frame 4A1 is supported by a opposed frame bracket 4A5. Each opposing frame bracket 4A5 is obtained by integrally assembling a core member 4A52 by welding or the like inside a pair of left and right half members 4A51. Each half member 4A51 is provided with an engagement claw 4A511 that can be engaged with an engagement hole (not shown) formed in the opposed frame 4A1 at the upper end portion on the rear edge side, and will be described later at a substantially central portion in the height direction of the rear edge portion. The rear frame main body 4A31 is fitted, and a rear frame main body fitting portion 4A512 that regulates the vertical movement of the rear frame main body 4A31 is provided (see FIG. 5). Then, the engaging claws 4A511 are engaged with the engaging holes of the opposing frame 4A1, and the horizontal piece provided at the upper end of the core member 4A52 is bolted in a state where it is applied to the lower surface of the opposing frame 4A1. The opposing frame 4A1 and the opposing frame bracket 4A5 are assembled together.

  The rear frame 4A3 includes a rear frame main body 4A31 that can be fitted into the rear frame main body fitting portion 4A512 of the half member 4A51, and an operation lever 4D2 (described later in the present invention) that is integrally assembled with the rear frame main body 4A31. And an operation lever holding body 4A32 for holding the operation portion.

  The rear frame body 4A31 has a longitudinal dimension larger than the distance between the outward surfaces of the pair of opposed frames 4A1, and faces rearward from the rising edge 4A311 and the upper or lower edge of the rising piece 4A311. And an upper piece 4A312 and a lower piece 4A313 which are substantially parallel to each other. In the present embodiment, the upright pieces 4A311, the upper piece 4A312 and the lower piece 4A313 are formed by bending a single steel plate. The upper piece 4A312 is provided with an outlet accommodating portion 4A312a that can accommodate the outlet device C, and an upper contact member support portion 4A312b that supports an upper contact member 4B1 described later. In this embodiment, upper contact body support portions 4A312b are provided at both end portions of the upper piece 4A312, and further upward from the rear edge of the region of the upper piece 4A312 where the upper contact body support portions 4A312b are provided. A rising portion 4A312c extending toward is provided (see FIG. 5). Further, link shaft insertion holes 4A31a into which link shafts 4B7 described later can be inserted are formed at positions corresponding to the upper piece 4A312 and the lower piece 4A313, respectively. In this embodiment, the rear frame main body reinforcing body 4A33 is interposed between the upper piece 4A312 and the lower piece 4A313, and the rear frame main body reinforcing body 4A33 prevents deformation of the rear frame main body 4A31.

  The operation lever holding body 4A32 has a longitudinal dimension that is substantially the same as or slightly smaller than the distance between the inward surfaces of the pair of opposed frames 4A1, and overlaps with the standing piece 4A311 of the rear frame body 4A31 along the front-rear direction. The upright piece 4A321 can be provided, and the upper piece 4A322 and the lower piece 4A323 that extend forward from the upper edge portion or the lower edge portion of the upright piece 4A321 and are substantially parallel to each other are provided. In the present embodiment, the upright pieces 4A321, the upper pieces 4A322, and the lower pieces 4A323 are formed by bending a single steel plate. The height of the upright piece 4A321 is set to be larger than the overall length of the opposed frame 4A1 and the opposed frame bracket 4A5 assembled to each other. The upper piece 4A322 extends forward from substantially the entire upper edge portion of the upright piece 4A321, and further, the front end portion thereof is bent downward from the region excluding the substantially central portion. That is, the upper piece 4A322 has a front extending portion 4A322a that extends further forward than the other portions at the substantially central portion in the longitudinal direction. The lower piece 4A323 extends forward from a substantially central portion of the lower edge of the upright piece 4A321, and its extension dimension is set smaller than the extension dimension of the upper piece 4A322. The operation lever holder 4A32 and the rear frame body 4A31 are integrally assembled by bolting or welding in a state where the upright piece 4A321 is applied to the upright piece 4A311 of the rear frame body 4A31.

  In the present embodiment, the operation lever holder reinforcement frame 4A34 is provided at the front end portion of the upper piece 4A322 of the operation lever holder 4A32. The longitudinal dimension of the operating lever holder reinforcing frame 4A34 is set to be substantially the same as the longitudinal dimension of the operating lever holder 4A32. A retractor holding frame 4A35 that protrudes forward is provided at a substantially central portion in the longitudinal direction of the operation lever holder reinforcing frame 4A34. In the present embodiment, the operating lever holder reinforcing frame 4A34 and the retractor holding frame 4A35 are integrally rigidly connected by welding or the like. Then, the upper surface portion of the retractor holding frame 4A35 is brought into contact with the front extending portion 4A322a provided on the upper piece 4A322 of the operation lever holder 4A32, so that the retractor pressing frame 4A35 is pressed against the force from below. An effective strength can be exhibited. The opposing frame 4A1, the front frame 4A2, the operation lever holder reinforcement frame 4A34, and the retractor holding frame 4A35 are each in the shape of a square pipe.

  In this manner, the frame body 4A formed by connecting the frames 4A1, 4A2, and 4A3 to each other is provided with a priority support portion 4A6 that comes into contact with the lower surface of the top plate 5 with priority over other parts.

  The priority support portion 4A6 is a pin-like one protruding upward from the upper surface portion of the frame body 4A. In the present embodiment, as will be described later, the top plate 5 can be swiveled horizontally with respect to the support 4, and the top plate 5 is at least mounted regardless of the turning angle of the top plate 5 with respect to the support 4. The attachment positions of the plurality of priority support portions 4A6 are set so that a plurality of points can be supported. Specifically, a priority support portion 4A6 is provided in each of the front end side region and the rear end side region of each opposing frame 4A1, and the top plate 5 is set so that a plurality of points can be supported by the four priority support portions 4A6. ing. Each priority support portion 4A6 is an integral product made of a material having excellent rigidity (POM: polyacetal in the present embodiment), and the upper surface portion of the frame body 4A using a bolt inserted into a bolt insertion hole formed in the center portion. (See FIG. 5).

  On the other hand, as shown in FIGS. 2, 3, 6, and 7, the slide switching mechanism 4 </ b> B includes an upper contact body 4 </ b> B <b> 1 that can contact the opening side standing wall 21 a of the upper rail groove 21, and a lower side The lower contact body 4B2 that can contact the rear side standing wall 22b of the rail groove 22, the upper rolling body 4B3 that can contact the opening side standing wall 21a of the upper rail groove 21, and the rear side of the lower rail groove 22 The lower rolling element 4B4 that can be in contact with the side upright wall 22b, the horizontal turning upper link 4B5 provided with the upper rolling element 4B3 at the tip, and the lower rolling element 4B4 provided at the tip. The lower link 4B6 is provided, and can be switched between the movement restricted state and the movement allowed state using the rotation of the links 4B5, 4B6.

  The upper contact body 4B1 is positioned closer to the opening side standing wall 21a side of the upper rail groove 21 than the upper rolling body 4B3 in the movement restricted state. The upper contact body 4B1 is supported by an upper contact body support portion 4A312b provided on the upper piece 4A312 of the rear frame body 4A31, and is made of a material having excellent rigidity (in this embodiment, SS: general structure). It is an integrally formed product made of rolled steel. In the present embodiment, as the upper contact body 4B1, as shown in FIG. 8 (FIG. 8A and FIG. 8B are a plan view and a side view of the upper contact body 4B1, respectively) In addition, a device provided with an upper protruding portion 4B12 protruding upward from the rear end portion of the horizontal portion 4B11 is applied. The upper contact body 4B1 is fixed to the upper piece 4A312 of the rear frame body 4A31 by bolting or the like in a state where the upper contact body 4B1 is placed on the upper contact body support portion 4A312b. In this fixed state, the rear surface portion of the upper protruding portion 4B12 is in contact with or close to the rising portion 4A312c of the upper piece 4A312 (see FIG. 7).

  The lower contact body 4B2 is positioned at a position closer to the rear side standing wall 22b side of the lower rail groove 22 than the lower rolling body 4B4 in the movement restricted state. In the present embodiment, the lower contact body 4B2 is formed of a material having excellent rigidity (POM: polyacetal in the present embodiment). As shown in FIG. 9, the lower-side contact body 4B2 has a substantially cylindrical shape, and is attached to the distal end portion of the advance / retreat member 4B21 that can advance and retract with respect to the frame body 4A (see FIGS. ). In the present embodiment, an adjuster bolt that can be advanced and retracted by a screw feeding action is applied as the advance and retract member 4B21. The advancing / retreating member 4B21 is advancing / retreating member receiver 4B22 fixed to the lower piece 4A313 of the rear frame body 4A31 (see FIGS. 6 and 10; FIGS. 10 (a), (b), and (c) are respectively advancing / retreating member receivers 4B22. A lower abutting body holding portion 4B211 that can hold the lower side abutting body 4B2 in a press-fitted state, and is provided with a flat-blade screwdriver. An operation receiving unit 4B212 that receives an operation by a jig such as is provided at the base end.

  The upper side rolling element 4B3 is positioned at a position farther from the opening side standing wall 21a of the upper side rail groove 21 than the upper side rolling element 4B3 in the movement restricted state. In the present embodiment, a roller that can rotate around the vertical axis is applied as the upper rolling element 4B3.

  The lower side rolling element 4B4 is positioned at a position farther from the rear side standing wall 22b of the lower side rail groove 22 than the lower side rolling element 4B4 in the movement restricted state. In the present embodiment, a roller that can rotate about a vertical axis is applied as the lower contact body 4D.

  The upper side rolling element 4B3 and the lower side rolling element 4B4 are rotatably attached to the tip portions of the upper side link 4B5 and the lower side link 4B6, respectively, and each rolling element is utilized by using the rotation of each link 4B5, 4B6. 4B3, 4B4 has priority over the abutting bodies 4B1, 4B2 in contact with the upright walls 21a, 22b of the rail grooves 21, 22, and the rolling elements with respect to the abutting bodies 4B1, 4B2. By moving 4B3 and 4B4 relatively, the contact state between each contact body 4B1 and 4B2 and the upright walls 21a and 22b of each rail groove 21 and 22 is released, and each rolling element 4B3 and 4B4 is moved to each rail groove. It is possible to switch between the movement-permitted states attached to the upright walls 21a and 22b of 21 and 22.

  In this embodiment, the upper side rolling element 4B3, the lower side link 4B6, and the link axis 4B7 that is a common axis of these links 4B5 and 4B6 are used to move the upper side rolling element 4B3 and the lower side rolling element. A synchronization mechanism 4E that synchronizes the movement of 4B4 is configured (see FIG. 6).

  The upper side link 4B5 is a front view of a state in which the upper side link 4B5 and the lower side link 4B6 are assembled through a reinforcing link 4B8 described later, as shown in FIG. (C) is an arrow view in the x direction and an arrow view in the y direction of (a), respectively, and the distal end portion 4B51 and the base end portion 4B52 are connected by a connection portion 4B53 having a substantially L shape in plan view. ing. The distal end 4B51 of the upper link 4B5 extends outward, and a link shaft insertion hole 4B54 into which the link shaft 4B7 can be inserted is formed in the vicinity of the boundary between the distal end 4B51 and the connecting portion 4B53. Further, a step portion 4B55 is provided at the boundary between the base end portion 4B52 and the connection portion 4B53 of the upper link 4B5. A concave portion 4B56 into which an upper side link pressing rolling element 4D5 described later can be fitted is formed in the base end portion 4B52 of the upper side link 4B5. Of the upper link 4B5, a region in the vicinity of the portion where the link shaft insertion hole 4B54 is formed is placed on the upper piece 4A312 of the rear frame body 4A31 (see FIG. 6).

  The lower side link 4B6 connects the distal end portion 4B61 and the proximal end portion 4B62 by a connection portion 4B63 having a substantially L shape in plan view. The base end portion 4B62 and the connection portion 4B63 have the same shape as the base end portion 4B52 and the connection portion 4B53 of the upper link 4B5, and the tip end portion 4B61 extends inward, and the tip end portion 4B61 and the connection portion 4B63. A link shaft insertion hole 4B64 into which the link shaft 4B7 can be inserted is formed in the vicinity of the boundary. Further, similarly to the upper side link 4B5, a step part 4B65 is provided at the boundary between the base end part 4B62 and the connection part 4B63 of the lower side link 4B6, and a lower side link pressing rolling element 4D6 described later can be fitted to the base end part 4B62. A recess 4B66 is formed.

  The link shaft 4B7 includes the link shaft insertion holes 4B54 and 4B64 formed in the upper link 4B5 and the lower link 4B6, and the link shaft insertion holes 4A31a formed in the upper piece 4A312 and the lower piece 4A313 of the rear frame body 4A31. Can be inserted continuously. A nut is screwed to the tip of the link shaft 4B7 through a washer.

  In the present embodiment, the reinforcing link 4B8 is interposed between the upper link 4B5 and the lower link 4B6. The reinforcing link 4B8 is interposed between the upper link 4B5 and the lower link 4B6 in a standing posture. More specifically, the reinforcing link 4B8 is interposed between the connecting portions 4B53 and 4B63 of the upper link 4B5 and the lower link 4B6. The links 4B5, 4B6 and the reinforcing links 4B8 are assembled by engaging the protrusions 4B81 of the reinforcing links 4B8 with the mounting holes 4B57, 4B67 provided in the connecting portions 4B53, 4B63 of the links 4B5, 4B6. be able to.

  As shown in FIG. 6, in the assembled state in which the upper side link 4B5 and the lower side link 4B6 are opposed to each other in the height direction via the reinforcing link 4B8, the distal end portion 4B51 of the upper side link 4B5 is the lower side link. It is positioned on the outer side of the tip 4B61 of 4B6. That is, in the present embodiment, the upper side link is formed in one region (specifically, the outer region) with a virtual straight line L passing through the center of the link shaft 4B7 and substantially orthogonal to the slide movement direction as a boundary. The front end 4B51 of 4B5 is positioned, and the front end 4B61 of the lower link 4B6 is positioned in the other region (specifically, the inner region). As a result, when a force for rotating the upper link 4B5 and the lower link 4B6 in the positive direction about the link shaft 4B7 is applied, the upper rolling element 4B3 provided at the tip portion 4B51 of the upper link 4B5. Moves toward the opening side upright wall 21a of the upper side rail groove 21, and the lower side rolling element 4B4 provided at the tip 4B61 of the lower side link 4B6 faces the rear side upstanding wall 22b of the lower side rail groove 22. On the other hand, when a force to rotate the upper link 4B5 and the lower link 4B6 in the reverse direction about the link shaft 4B7 is applied, the upper side provided at the tip portion 4B51 of the upper link 4B5 The rolling element 4B3 moves toward the direction away from the opening-side standing wall 21a of the upper rail groove 21, and is provided at the distal end portion 4B61 of the lower link 4B6. Lower rolling member 4B4 is moved in a direction away from the deeper-side upright wall 22b of the lower rail groove 22. With the configuration as described above, the movement of the upper rolling element 4B3 and the movement of the lower rolling element 4B4 accompanying the switching operation of the slide switching mechanism 4B can be synchronized.

  The support body 4 according to the present embodiment is provided with the slide switching mechanism 4B having such a configuration as a pair at positions separated along the slide movement direction, and interlocks the switching operation between the pair of slide switching mechanisms 4B. A slide switching interlocking mechanism 4F is provided.

  As shown in FIG. 2, the slide switching interlocking mechanism 4F includes a common link pressing body 4D1 that can press the base end portions 4B52 and 4B62 of the links 4B5 and 4B6 of the slide switching mechanisms 4B, and performs a predetermined operation. By operating the link pressing body 4D1 based on the force, the links 4B5 and 4B6 of the slide switching mechanisms 4B are turned around the link shaft 4B7, and the rolling elements provided at the end portions 4B51 and 4B61 of the links 4B5 and 4B6. 4B3 and 4B4 are moved simultaneously or substantially simultaneously. In this embodiment, as shown in FIG. 12, the base ends 4B52 and 4B62 of the links 4B5 and 4B6 of one slide switching mechanism 4B and the base ends of the links 4B5 and 4B6 of the other slide switching mechanism 4B. The base ends of the links 4B5 and 4B6 in which the portions 4B52 and 4B62 are staggered in the height direction using the stepped portions 4B55 and 4B65, respectively, and the link pressing body 4D1 is overlapped in the height direction. 4B52 and 4B62 can be pressed simultaneously. Therefore, as shown in the figure, the base end portions 4B52 and 4B62 of the links 4B5 and 4B6 of one slide switching mechanism 4B are set to be positioned relatively above the connection portions 4B53 and 4B63, and the other The base end portions 4B52 and 4B62 of the links 4B5 and 4B6 of the slide switching mechanism 4B are set so as to be positioned relatively below the connection portions 4B53 and 4B63.

  As shown in FIG. 13 (the figure (a), (b) is a plan view and a side view of the link pressing body 4D1, respectively), the link pressing body 4D1 is connected to the upper side link 4B5 of each slide switching mechanism 4B. An upper side link pressing rolling element 4D5 capable of pressing the base end part 4B52 and a lower side link pressing rolling element 4D6 capable of pressing the base end part 4B62 of the lower side link 4B6 of each slide switching mechanism 4B are provided. Details will be described later.

  The support body 4 according to the present embodiment supports the top plate 5 so that the top plate 5 can be turned horizontally, a turning restriction state for restricting the horizontal turning of the top plate 5, and a turning permission state for allowing the top plate 5 to turn horizontally. 4C is provided with a turning switching mechanism 4C that can be switched between.

  Here, the top plate 5 will be described.

  The top plate 5 includes, as shown in FIGS. 1 to 3 and the like (note that the top plate 5 is indicated by an imaginary line in FIG. 2), A turning mechanism 52 for horizontally turning the plate body 51 and a turning stopper disk 53 provided on the lower surface of the top plate body 51 are provided. In the following description, in the state where the longitudinal direction of the top plate 5 is substantially orthogonal to the longitudinal direction of the base 2, the base 2 side of the top plate 5 is the rear, and the opposite side (the anti-base 2 side) is the front. To do.

  The top plate main body 51 has, for example, a substantially gourd shape in plan view (an elliptical shape with a central portion), and a relatively large size is applied in the present embodiment. A planar view shape of the rotation base end side (rear end side) of the top plate body 51 is set to a substantially semicircular arc shape centering on the turning shaft 5 a of the top plate body 51. The maximum longitudinal dimension of the top plate body 51 is set to be substantially the same as or slightly smaller than the longitudinal dimension of the base 2.

  The turning mechanism 52 includes a turntable 521 and a turntable receiver 522 that supports the turntable 521.

  The turntable 521 is a known one using, for example, a thrust bearing.

  The turntable support 522 is a pair of a turntable support body 5221 that can hold the turntable 521 with the top plate body 51 so as to be pivotable, and a pair of suspension support bases 5221 that are suspended downward from both side edges of the turntable support body 5221. The hinge shaft support piece 5222 is provided. In the present embodiment, the turntable receiving body 5221 and the hinge shaft support piece 5222 are formed by bending a single steel plate. A hinge shaft support hole into which the hinge shaft H1 can be inserted is formed in the hinge shaft support piece 5222. In the present embodiment, a round hole-like hinge shaft support hole is formed in the vicinity of the front end portion of the hinge shaft support piece 5222.

  The turning stopper disc 53 functions as the “pinch target portion” of the present invention, and is centered on the turning shaft 5a of the top plate 5 and the same or slightly larger than the turning angle of the top plate 5 that can be turned horizontally. It has a substantially annular shape in plan view with corners. In this embodiment, since the top plate 5 is capable of turning about 180 degrees, the turning stopper disk 53 is applied with a center angle of 180 degrees or slightly larger than 180 degrees. Specifically, as shown in FIG. 14 (FIG. 14A is a plan view of the turning stopper disk 53 and FIG. 14B is a sectional view taken along line xx of FIG. 14A), the top plate A substantially semi-annular inner stopper disk 531 attached to the lower surface side of the main body 51 by bolting or the like, a standing stopper disk 532 arranged in a standing posture along the outer edge of the inner stopper disk 531, and an inner stopper disk 5 and an outer stopper disk 533 disposed along the lower edge of the standing stopper disk 532. These stopper disks 531, 532, and 533 are integrally rigidly connected by spot welding or the like. ing. Such a turning stopper disc 53 is fixed to the lower surface portion in the rear half region of the top plate body 51 by bolting or the like. In addition, the diameter of the turning stopper disk 53 is set larger than the diameter of the turning table 521 so that the turning table 521 and the turning stopper disk 53 do not interfere with each other (see FIG. 2).

  Such a top plate 5 is connected to the support body 4 via a hinge mechanism H (corresponding to the “lifting operation allowing mechanism” of the present invention), and one end portion (rear end portion) is supported by the support body 4. The other end (front end) is supported by the leg 6. In the present embodiment, the leg body 6 is provided with a leg body 61 and a movable body 62 (a caster in the illustrated example) provided at the lower end of the leg body 61.

  2 and 3, the hinge mechanism H includes a hinge shaft support piece 5222 of the rotary base 522, a hinge bearing body 4A7 provided on the frame body 4A of the support body 4, and a hinge shaft H1. It is a thing.

  As shown in FIGS. 2 to 5, the hinge bearing body 4A7 is provided on the inward surface portion of the front frame 4A2 in the frame body 4A. The hinge bearing body 4A7 includes a standing piece 4A71 that is in contact with the inward surface portion of the front frame 4A2, and a pair of facing pieces 4A72 that extend rearward from both side ends of the standing piece 4A71 and face each other. A hinge shaft insertion hole 4A72a into which the hinge shaft H1 can be inserted is formed in the piece 4A72 (see FIG. 5). In this embodiment, a long hole extending in the height direction is applied as each hinge shaft insertion hole 4A72a.

  The hinge shaft support hole formed in the hinge shaft support piece 5222 of the rotary base 522 and the hinge shaft insertion hole 4A72a formed in the opposed piece 4A72 of the hinge bearing body 4A7 are communicated with each other. By inserting the hinge shaft H1 into the holes 5222c and 4A72a, the top plate 5 and the support body 4 are connected via the hinge mechanism H. In this connected state, the hinge mechanism H is positioned at a position deviated from the support region by the priority support portion 4A6 (see FIGS. 2 and 3). That is, in the present embodiment, the hinge mechanism H is provided on the front side (on the side opposite to the base 2) from the support region by the priority support portion 4A6.

  Next, the turning switching mechanism 4C provided on the support 4 will be described.

  As shown in FIG. 15, the turning switching mechanism 4 </ b> C includes a swivelable position where the swiveling stopper disk 53 (more specifically, the outer stopper disk 533) provided on the lower surface of the top plate body 51 can be swallowed, A retractable body 4C1 that is movable between the retracted position where the retracted state is released is provided, and the revolving stopper disk 53 is retracted downward by moving the retractable body 4C1 from the retracted position to the retractable position. In addition, a turning regulation state in which the lower surface of the top plate body 51 (corresponding to “the lower surface of the top plate 5” of the present invention) is brought into contact with or pressed against the priority support portion 4A6 to restrict horizontal turning of the top plate 5 and a retracted state are provided. By releasing, it is possible to switch between the turning-permitted states that allow the top plate 5 to turn horizontally.

  The retractable body 4C1 is shown in FIG. 16 (FIGS. (A), (b), (c), and (d) are respectively a plan view of the retractable body 4C1, a cross-sectional view taken along line xx of FIG. As shown in the drawing, the retractor body 4C11 that can be in direct contact or pressure contact with the turning stopper disk 53, and the retractor pressing frame 4A35 in contact with or in pressure contact with the retractor pressing frame 4A35 of the frame body 4A. 4C12, and a base portion 4C13 for connecting the retractable body 4C11 and the retractable body 4C12. In the present embodiment, an integrated product made of a material having excellent rigidity (POM: polyacetal in the present embodiment) is applied as the retractable body 4C1.

  The retractable body 4C11 is provided with an upward extension 4C111 extending upward from the front end of the base portion 4C13 and an insertion claw 4C112 extending forward from the upper end of the upward extension 4C111. . Further, in order to smoothly engage the retractable body 4C1 with respect to the turning stopper disk 53, an indentation guide portion 4C11a having a partially arcuate downward shape when viewed from the front is provided on the lower surface portion of the intrusion claw 4C112. c)).

  The intruder 4C12 protrudes upward from a portion of the base portion 4C13 on the rear side of the retractable body 4C11, and its height dimension is in contact with the retractable body holding frame 4A35 of the frame body 4A. Or it is set to the dimension which can be pressed. Further, in order to make the retracting operation of the retracting body 4C12 with respect to the retracting body holding frame 4A35 smooth, a retracting guide part 4C12a having a partially arcuate upward shape when viewed from the front is provided at the upper end (see FIG. 4D). .

  The base portion 4C13 is formed with an operation lever shaft insertion hole 4C13a into which an operation lever shaft 4D3 described later can be inserted.

  Thus, the support 4 according to the present embodiment includes a switching operation interlocking mechanism 4D that interlocks the switching operation of the slide switching mechanism 4B and the switching operation of the turning switching mechanism 4C.

  As shown in FIGS. 2, 3 and 15, the switching operation interlocking mechanism 4D is integrally attached to the link pressing body 4D1, the link pressing body 4D1 and the retracting body 4C1, and the operation lever shaft 4D3 is the center. This is provided with an operation lever 4D2 that can turn horizontally.

  The link pressing body 4D1 is in contact with or in contact with the vicinity of the base end portions 4B52 and 4B62 of the links 4B5 and 4B6 and does not press the links 4B5 and 4B6, and the base end portions of the links 4B5 and 4B6. 4B52 and 4B62 can be moved between the pressing positions where the area near the pressing area can be pressed. As shown in FIG. 13, the link pressing body 4D1 is provided with a support portion 4D11 for supporting the operating lever 4D2 and the retractable body 4C1 at one end portion (front end portion), and the tip end portion at each other end portion (rear end portion). The link 4B5, 4B6 is substantially Y-shaped in plan view provided with a pressing body 4D12 that forms a bifurcated pair that can be directly contacted or attached to different parts in the vicinity of the base ends 4B52, 4B62 of the links 4B5, 4B6.

  Each pressing body 4D12 has a first rolling element holding portion that rotatably holds an upper link pressing rolling element 4D5 that can press the base end portion 4B52 of the upper link 4B5 of each slide switching mechanism 4B at the distal end. 4D121 and a second rolling element holding portion 4D122 that rotatably holds the lower link pressing rolling element 4D6 that can press the base end portion 4B62 of the lower link 4B6 of each slide switching mechanism 4B in the height direction with a predetermined dimension. The link pressing rolling elements 4D5 and 4D6 are attached to the roller holding portions 4D121 and 4D122 via the link pressing rolling element shafts 4D7, respectively. In the present embodiment, the link pressing rolling elements 4D5 and 4D6 are restricted from vertically moving the links 4B5 and 4B6 and the link pressing rolling elements 4D5 and 4D6 and the links 4B5 and 4B6 are attached or pressed. The collars 4D51 and 4D61 that can be maintained are provided. Further, an operation lever shaft insertion hole 4D1a into which the operation lever shaft 4D3 can be inserted is formed at a branch point portion of the pressing body 4D12.

  As shown in FIG. 17 (FIGS. 17A and 17B are a plan view and a side view of the operation lever 4D2, respectively, the operation lever 4D2 is a straight line that can be gripped by the user at one end (front end). The handle portion 4D21 is shaped like a plate, and the supported portion 4D22 supported by the support portion 4D11 of the pressing body 4D12 is provided at the other end portion (rear end portion). The supported portion 4D22 has a substantially Y shape in plan view substantially similar to the pressing body 4D12, and has an operation lever shaft insertion hole 4D2a into which the operation lever shaft 4D3 can be inserted at a branch point.

  Then, the retractable body 4C1 of the turning switching mechanism 4C is placed on the supported portion 4D22 of the operation lever 4D2, and the link pressing body 4D1, the operation lever 4D2, and the retractable body 4C1 are fastened with a common bolt and the operation lever is held. Operation lever shaft insertion holes formed in the upper piece 4A322, lower piece 4A323, and operation lever holder reinforcement frame 4A34 of the body 4A32, and operation lever shafts formed in the link pressing body 4D1, the operation lever 4D2, and the retracting body 4C1, respectively. The insertion switching holes 4D1a, 4D2a, and 4C13a are made to coincide with each other, and a single operation lever shaft 4D3 is continuously inserted into each of these insertion holes, whereby the turning switching mechanism 4C and the switching operation interlocking mechanism 4D are integrated with the frame body 4A. (See FIG. 15). In this assembled state, the retractable body 4C1 is fixed to the upper surface side of the operation lever 4D2, and the link pressing body 4D1 is fixed to the lower surface side of the operation lever 4D2. In this assembled state, the link pressing body 4D1 and the retracting body 4C1 together with the operation lever 4D2 can be turned horizontally around the operation lever shaft 4D3.

  Next, the usage method of this desk 1 and operation | movement and an effect | action of each mechanism are demonstrated.

  First, during normal use, in order to restrict the sliding movement of the support 4 and the turning of the top plate 5, each slide switching mechanism 4B is set in a movement restricted state and the turning switching mechanism 4C is set in a turning restricted state.

  When each slide switching mechanism 4B is in the movement restricted state, as shown in FIGS. 3 and 7, the upper contact body 4B1 (specifically, the front surface of the upper protrusion 4B12) is given priority over the upper rolling body 4B3. Part) abuts against the opening side standing wall 21a of the upper rail groove 21, and the lower side abutting body 4B2 abuts against the rear side standing wall 22b of the lower rail groove 22 in preference to the lower rolling body 4B4. As a result, the sliding movement of the support 4 with respect to the base 2 and, consequently, the sliding movement of the top plate 5 with respect to the base 2 are restricted.

  In the present embodiment, the lower-side contact body 4B2 is attached to the distal end portion of the advance / retreat member 4B21 that can advance and retreat with respect to the frame body 4A as described above, and the slide switching mechanism 4B controls the movement. In this state, a jig such as a flat-blade screwdriver is inserted into the operation receiving portion 4B212 of the advance / retreat member 4B21 to apply a predetermined operation force, thereby moving the advance / retreat member 4B21 forward and backward. It is possible to adjust the relative position of the side contact body 4B2. As a result, the relative angle of the support 4 with respect to the base 2 can be finely adjusted, and the top plate 5 supported by the support 4 can be set to have a substantially horizontal posture in a normal use state. That is, the lower side contact body 4B2 and the advance / retreat member 4B21 constitute a relative angle adjustment mechanism capable of adjusting the relative angle of the support body 4 with respect to the base 2.

  Further, when the turning switching mechanism 4C is in the turning restricted state, as shown in FIG. 3 and FIG. 15, the retractable body 4C1 positioned at the swivelable position is moved to the outer stopper disk 53 of the turning stopper disk 53 by the swaging claw 4C112. While gripping 533 and pulling it downward, the lower surface of the top plate main body 51 is supported at a plurality of points by the respective priority support portions 4A6. As a result, horizontal turning of the top plate 5 relative to the support 4 is restricted. In this way, when each slide switching mechanism 4B is in the movement restricted state and the turning switching mechanism 4C is in the turning restricted state, as shown in FIG. 2, the operation lever 4D2 of the switching operation interlocking mechanism 4D is connected to the handle portion 4D21. The link pressing body 4D1 of the switching operation interlocking mechanism 4D is positioned at a normal position whose longitudinal direction is substantially orthogonal to the longitudinal direction of the base 2, and the upper side link pressing rolling element 4D5 provided at the tip of each pressing body main body 4D12. And the lower link pressing rolling elements 4D6 are in contact with the proximal end portion 4B52 region of the upper link 4B5 or the proximal end portion 4B62 region of the lower link 4B6, and do not press the links 4B5, 4B6. It is positioned at the non-pressing position.

  On the other hand, when the relative position and relative angle of the top plate 5 with respect to the base 2 are changed, each slide switching mechanism 4B is switched from the movement restricted state to the movement permitted state, and the turning switching mechanism 4C is turned from the turning restricted state to the turn permitted state. It is necessary to switch to. In this case, the user holds the handle portion 4D21 of the operation lever 4D2 at the normal position, and applies an operation force to pull it forward (user side) regardless of the forward and reverse directions.

  Based on this operating force, the operating lever 4D2 horizontally turns in one of the forward and reverse directions (for example, clockwise direction) around the operating lever shaft 4D3 together with the link pressing body 4D1 and the retracting body 4C1 (see FIG. 18). Accordingly, the link pressing body 4D1 is provided with the upper side link pressing rolling element 4D5 and the lower side link pressing provided at the distal end portion of any one pressing body body 4D12 from the non-pressing position. The rolling elements 4D6 are respectively pressed against the proximal end portions 4B52 and 4B62 of the respective links 4B5 and 4B6 while being brought into contact with the proximal end portion 4B52 of the upper link 4B5 or the proximal end portion 4B62 of the lower link 4B6. Rotate to one pressing position. As the link pressing body 4D1 turns, the upper link 4B5 and the lower link 4B6 of each slide switching mechanism 4B whose base end portions 4B52 and 4B62 are pressed by the link pressing body 4D1 are linked to each other to link the link shaft 4B7. Rotate around the center. Then, as shown in FIGS. 18 to 20, the upper link 4B5 and the lower link 4B6 facing each other in the height direction in each slide switching mechanism 4B rotate about a common link shaft 4B7, thereby The upper rolling element 4B3 provided at the distal end portion 4B51 of the side link 4B5 moves toward the opening side standing wall 21a of the upper rail groove 21, and the lower rolling element 4B4 provided at the distal end portion 4B61 of the lower link 4B6. Moves toward the rear side standing wall 22b of the lower rail groove 22. As a result, each slide switching mechanism 4B releases the contact state of the upper contact body 4B1 with respect to the opening-side standing wall 21a of the upper rail groove 21 and moves the upper rolling element 4B3 to the opening side of the upper rail groove 21. The lower rolling body 4B4 is lifted to the rear side of the lower rail groove 22 by bringing the lower rolling body 4B4 into contact with the standing wall 21a and releasing the contact state of the lower side contact body 4B2 with the rear side standing wall 22b of the lower rail groove 22. The movement is allowed to be brought into contact with the wall 22b. Thereby, it is possible to slide the top plate 5 together with the support 4 with respect to the base 2.

  In the present embodiment, the rail grooves 21 and 22 are formed from one end to the other end of the base 2, so that the slide switching mechanism 4 </ b> B is supported by sliding the support 4 in a movement-permitted state. It is also possible to move the body 4 together with the top plate 5 to another adjacent base 2, or to remove the support body 4 from the base 2 together with the top plate 5. In other words, the support 4 once removed from the base 2 can be attached to the base 2 again using the rail grooves 21 and 22 by setting the slide switching mechanism 4B to the movement-permitted state. That's what it means.

  Further, the retractable body 4C1 of the turning switching mechanism 4C together with the operation lever 4D2 based on the operation force (the operation force grasping the handle portion 4D21 of the operation lever 4D2 and pulling it forward (user side) regardless of the forward or reverse direction). In addition, the swivel position is swung from the swivelable position to a swivel release position in which the swivel stopper disk 53 is unlocked from the outer stopper disk 533 (see FIG. 18). As a result, the turning switching mechanism 4C releases the swiveling stopper disc 53 from the retractable body 4C1 and enters a turning permission state in which the top plate 5 is allowed to turn horizontally, and the top plate 5 is placed horizontally around the turning shaft 5a. By turning, the posture in which the longitudinal direction of the top plate 5 is substantially orthogonal to the longitudinal direction of the base 2 (see FIG. 2), or the longitudinal direction of the top plate 5 is substantially parallel to the longitudinal direction of the base 2. (Refer to FIG. 21, and FIG. 21 shows the state where the operation lever 4D2 is positioned at the normal position.) The turning angle posture of the top plate 5 with respect to the base 2 can be appropriately selected. Further, when the turning switching mechanism 4C is in the turning allowable state, the top plate 5 can be rotated in the direction of lifting with respect to the support 4 using the hinge mechanism H.

  Even when a manipulation force for pulling the manipulation lever 4D2 in the normal position in the reverse direction (counterclockwise direction) is applied, as shown in FIG. 22, each slide switching mechanism is actuated by the switching operation interlocking mechanism 4D. 4B can be switched from the movement restricted state to the movement permitted state, and the turning switching mechanism 4C can be switched from the turning restricted state to the turn permitted state. That is, when the operation lever 4D2 is horizontally turned counterclockwise from the normal position, the link pressing body 4D1 and the retracting body 4C1 horizontally turn counterclockwise around the operation lever shaft 4D3 together with the operation lever 4D2. From the non-pressing position, the pressing body 4D1 moves the upper side link pressing rolling element 4D5 and the lower side link pressing rolling element 4D6 provided at the tip of the other pressing body body 4D12 of the paired pressing body bodies 4D12 upward. Turn to the second pressing position that presses the proximal end portion 4B52, 4B62 vicinity region of each link 4B5, 4B6 while being in contact with the proximal end portion 4B52 vicinity region of the side link 4B5 or the proximal end portion 4B62 vicinity of the lower side link 4B6 Moving. Thereafter, the slide switching mechanism 4B is allowed to move by the same operation and action as described above, and the turning switching mechanism 4C is allowed to turn.

  On the other hand, when each slide switching mechanism 4B is switched from the movement-permitted state to the movement-restricted state, and when the turn switching mechanism 4C is switched from the turn-permitted state to the turn-restricted state, an operation force that returns the operation lever 4D2 to the normal position is applied.

  Based on this operating force, the operating lever 4D2 rotates horizontally with the link pressing body 4D1 and the retracting body 4C1 around the operating lever shaft 4D3 in the direction opposite to that during the switching operation. As a result, the link pressing body 4D1 pivots from the first pressing position or the second pressing position to the non-pressing position. Along with the turning movement of the link pressing body 4D1, the links 4B5 and 4B6 of the slide switching mechanisms 4B are interlocked to switch the slide switching mechanism 4B from the movement restricted state to the movement permitted state around the link shaft 4B7. Is rotated in the opposite direction, so that the upper rolling element 4B3 provided at the distal end portion 4B51 of the upper link 4B5 moves in a direction away from the opening-side standing wall 21a of the upper rail groove 21 and is moved downward. The lower rolling element 4B4 provided at the distal end portion 4B61 of the side link 4B6 moves in a direction away from the rear side standing wall 22b of the lower rail groove 22. As a result, the support 4 moves in the direction of sinking due to the weight of the support 4 itself and the weight of the top plate 5, and each slide switching mechanism 4 </ b> B moves to the opening side of the upper rail groove 21 as shown in FIG. 5. The contact state of the upper rolling element 4B3 with respect to the standing wall 21a is released, the upper contact body 4B1 is brought into contact with or pressed against the opening side standing wall 21a of the upper rail groove 21, and the lower side of the lower rail groove 22 is placed. The state where the lower rolling element 4B4 is brought into contact with the side upright wall 22b is released, and the lower side abutting body 4B2 is brought into contact with or pressed against the rear side upright wall 22b of the lower rail groove 22. Thereby, the sliding movement of the support body 4 with respect to the base 2 and by extension, the top plate 5 is regulated. The rotation of the operation lever 4D2 at the time of the switching operation is such that the link pressing rolling bodies 4D5 and 4D6 provided on the link pressing body 4D1 are formed in the concave portions 4B56 and 4B62 formed on the base end portions 4B52 and 4B62 of the links 4B5 and 4B6, respectively. By fitting in 4B66 (see FIGS. 11 and 12), further rotation in the same direction is restricted.

  Further, on the basis of the operation force (operation force for returning the operation lever 4D2 to the normal position), the retractable body 4C1 of the turning switching mechanism 4C is also turned and moved from the retraction release position to the retraction possible position together with the operation lever 4D2. When the retractable body 4C1 is swung from the retracting position to the retractable position, the operation of the retracting guide 4C11a provided on the retracting claw 4C112 of the retractable body 4C11 facilitates the retraction operation with respect to the revolving stopper disk 53. In addition, the operation of the retracting guide 4C12a provided in the retracting body 4C12 of the retracting body 4C1 can smoothly perform the retracting operation of the frame body 4A with respect to the retracting body pressing frame 4A35. . In the present embodiment, in the process of switching the turning switching mechanism 4C from the turning permission state to the turning restriction state, the submerged body 4C12 is brought into the lower part of the retracting body pressing frame 4A35 while being brought into contact with or pressed against the retracting body pressing frame 4A35. Accordingly, the retractable body 4C11 is pulled downward, and the turning stopper disk 53 can be retracted together with the retractable body 4C11. As a result, the top plate 5 integrally provided with the turning stopper disk 53 is also drawn downward, and the lower surface of the top plate body 51 is brought into pressure contact with the priority support portion 4A6, and a good support state of the top plate 5 is ensured. (See FIGS. 3 and 15). In this way, the turning switching mechanism 4C is switched from the turning permission state to the turning restriction state based on the operation force.

  When the turning switching mechanism 4 </ b> C is in the turning restricted state, the top plate 5 is in a state in which it cannot turn in the direction of lifting with respect to the support body 4 around the hinge axis H <b> 1 of the hinge mechanism H as shown in FIG. 8. In the present embodiment, the slide switching mechanism 4B is provided with an auxiliary rolling element 4B9 that can rotate around a horizontal axis that can contact the bottom wall 21c of the upper rail groove 21 (see FIG. 7).

  As described above, the support body 4 according to the present embodiment includes the switching operation interlocking mechanism 4D that interlocks the switching operation of the slide switching mechanism 4B and the switching operation of the turning switching mechanism 4C. 4B and the turning switching mechanism 4C are excellent in operability and practicality as compared to the mode in which the switching operation must be individually performed, and each of the mechanisms 4B and 4C has a dedicated switching operation unit. The number of parts can be reduced as compared with the aspect in which the is provided.

  Particularly, the switching operation interlocking mechanism 4D includes a single operation lever 4D2, and by applying a predetermined operation force to the operation lever 4D2, the switching operation of the slide switching mechanism 4B and the switching operation of the turning switching mechanism 4C are performed. For example, an operation unit for switching the slide switching mechanism and the turning switching mechanism from each allowable state (sliding allowable state, turning allowable state) to each restricting state (slide restricting state, turning restriction), Compared to a mode in which the operation unit for switching from each restricted state to each permitted state is different, it is possible to reduce the number of parts, as well as intuitively understand the operation method, and operability It will be excellent.

  Further, the operation lever 4D2 is capable of horizontal turning, and the slide switching mechanism 4B is changed from the movement restricted state to the movement permitted state by applying an operation force that the user always pulls regardless of whether the operation lever 4D2 is forward or backward. Since the turning switching mechanism 4C is switched from the turning restriction state to the turning permission state, the operation method for switching each switching mechanism from the restriction state to the permission state is the same regardless of the standing position of the user with respect to the top board. Therefore, it is excellent in operability and practicality. In addition, it is possible to continue to provide a stable operation force as compared with a mode that requires a pressing operation force, and a switching operation can be performed accurately.

  In addition, the switching operation interlocking mechanism 4D can press the non-pressing position where the proximal end portions 4B52 and 4B62 of the links 4B5 and 4B6 are not pressed and the proximal end portions 4B52 and 4B62 of the links 4B5 and 4B6. A link pressing body 4D1 movable between the pressing positions, and a pull-in body and an operation lever 4D2 provided integrally with the link pressing body 4D1 and capable of horizontal turning are provided. When the operating force for horizontally turning is applied, the links 4B5 and 4B6 are rotated by horizontally turning the link pressing body 4D1 between the non-pressing position and the pressing position in accordance with the horizontal turning of the operation lever 4D2. Since the retractable body 4C1 is rotated between the retractable position and the retracting position, the structure of the switching operation interlocking mechanism 4D is simplified. In addition, by applying the operating force to the operating lever 4D2 and rotating the link pressing body 4D1 and the retracting body 4C1 together with the operating lever 4D2, the switching operation between the slide switching mechanism 4B and the turning switching mechanism 4C is ensured. Can be linked.

  Further, the link pressing body 4D1 is provided with a support portion 4D11 that supports the retractable body 4C1 and the operation lever 4D2 at one end portion, and presses different portions in the vicinity of the base end portions 4B52 and 4B62 of the links 4B5 and 4B6 at the other end portion. A pressing body 4D12 that forms a bifurcated pair is provided, and can be turned together with the retractable body 4C1 and the operating lever 4D2 around an operating lever shaft 4D3 provided at a branch point of the pressing body 4D12. When 4D2 is positioned at the normal position, the link pressing body 4D1 is positioned at a non-pressing position where none of the pressing body main bodies 4D12 presses the proximal end portions 4B52 and 4B62 of the links 4B5 and 4B6. When the lever 4D2 is horizontally turned from the normal position in either the forward or reverse direction, the link pressing body 4D1 is paired. Any one of the body main bodies 4D12 is positioned at the first pressing position that presses the vicinity of the base end portions 4B52 and 4B62 of the links 4B5 and 4B6, and the operation lever 4D2 is turned horizontally from the normal position to either the forward or reverse direction. In this case, the other of the pressing body main bodies 4D12 paired with the link pressing body 4D1 is positioned at the second pressing position that presses the area near the base ends 4B52 and 4B62 of the links 4B5 and 4B6. The link pressing body 4D1 can be moved from the non-pressing position to the first pressing position or the second pressing position by horizontally turning the operating lever 4D2 regardless of the forward / reverse direction with respect to the operating lever 4D2 positioned at the position. It is possible to simplify the operation. In addition, since the links 4B5 and 4B6 are horizontally turned in conjunction with the movement of the link pressing body 4D1, the slide switching mechanism 4B can be switched between the movement restricted state and the movement permitted state. The applied operating force can be reliably transmitted to the links 4B5 and 4B6 via the link pressing body 4D1, and the switching operation of the slide switching mechanism 4B can be performed accurately.

  Since the link pressing rolling elements 4D5 and 4D6 that can press the links 4B5 and 4B6 while being in contact with the regions near the base ends 4B52 and 4B62 of the links 4B5 and 4B6 are provided at the distal end of the pressing body 4D12, a light operation is achieved. The switching operation of the slide switching mechanism 4B and the turning switching mechanism 4C can be performed by force.

  Particularly, since the link pressing rolling elements 4D5 and 4D6 are provided with the flange portions 4D51 and 4D61 for restricting the vertical movement of the links 4B5 and 4B6, the link pressing rolling elements 4D5 and 4D6 and the links 4B5 and 4B6 are attached. Alternatively, the pressing state can be prevented from being released unexpectedly, and the operating force applied to the operating lever 4D2 can be accurately transmitted to the links 4B5 and 4B6 via the link pressing rolling elements 4D5 and 4D6.

  In particular, in the present embodiment, slide switching is performed by moving each rolling element 4B3, 4B4 that can move relative to the frame body 4A relative to each contact body 4B1, 4B2 that cannot move relative to the frame body 4A. Since the mechanism 4B can be switched between the movement-permitted state and the movement-restricted state, the brake is efficiently braked using the load of the top plate 5 and the support body 4 when the movement-permitted state is switched to the movement-restricted state. The support 4 and the top plate 5 can be locked at desired positions.

  Further, paying attention to the fact that the support body 4 and the top plate 5 can be tilted in the direction in which the support body 4 sinks around the portion supported by the base 2 due to the weight of the support body 4 and the top plate 5, the upper contact body 4B1, the upper rolling body 4B3 is brought into contact with or attached to the open side standing wall 21a of the upper rail groove 21, and the lower side contact body 4B2 and the lower side rolling body 4B4 are brought into contact with the rear side standing wall 22b of the lower rail groove 22 or Since each abutment body or each rolling element abuts or abuts against the standing wall on the same side of the rail groove, each abutment body 4B1, 4B2, The rolling elements 4B3 and 4B4 can be brought into contact with or attached to the inner walls of the rail grooves 21 and 22 with certainty, and in a movement restricted state, a good braking function is provided by the respective abutting bodies 4B1 and 4B2 to allow movement. In the state, each rolling element 4B3, 4B Exhibits by good sliding function.

  In addition, since the slide device 42 includes a synchronization mechanism 4E that synchronizes the movement of the upper rolling element 4B3 and the lower rolling element 4B4, the sliding device 42 is compared with the mode in which each rolling element is individually moved. This improves operability.

  The synchronization mechanism 4E includes an upper link 4B5 in which the upper rolling element 4B3 is provided at the tip end 4B51, a lower link 4B6 in which the lower rolling element 4B4 is provided at the tip end 4B61, and the upper link 4B5 and the lower link. 4B6 and a link shaft 4B7 that is a common rotation axis of the 4B6, and the upper link 4B5 and the lower link 4B6 are horizontally swiveled around the link shaft 4B7 based on the operation force applied to the operation unit 424. As a result, the movement of the upper rolling element 4B3 and the movement of the lower rolling element 4B4 are synchronized, so that the structure of the synchronization mechanism 4E can be simplified. In addition, the tip 4B51 of the upper link 4B5 is positioned in one area, and the lower link is positioned in the other area, with a virtual straight line L passing through the center of the link shaft 4B7 and substantially orthogonal to the slide movement direction as a boundary. Since the tip 4B61 of 4B6 is positioned, when an operation force is applied to switch the slide switching mechanism 4B from the movement restricted state to the movement allowed state, the upper side link 4B5 and the lower side link 4B6 are centered on the vertical axis 4G3. By horizontally turning, the upper rolling element 4B3 provided at the tip portion 4B51 of the upper link 4B5 is moved toward the opening side standing wall 21a of the upper rail groove 21, and at the same time, the tip portion 4B61 of the lower link 4B6. The lower side rolling element 4B4 provided on the lower side rail groove 22 can be moved toward the rear side standing wall 22a.On the other hand, when an operation force for switching the slide switching mechanism 4B from the movement-permitted state to the movement-restricted state is applied, the upper side link 4B5 and the lower side link 4B6 horizontally turn around the vertical axis 4G3, thereby The upper rolling element 4B3 provided at the tip 4B51 of 4B5 is moved toward the direction away from the opening side standing wall 21a of the upper rail groove 21 (in other words, the rear side standing wall 21b side), and at the same time the lower side The lower side rolling element 4B4 provided at the distal end 4B61 of the link 4B6 can be moved in a direction away from the rear side standing wall 22a of the lower side rail groove 22 (in other words, the opening side standing wall 22a side). As described above, the movement of the upper rolling element 4B3 and the movement of the lower rolling element 4B4 can be synchronized without requiring a complicated structure, and the movement allowable state and movement restriction state of the slide switching mechanism 4B This contributes to improving the stability of the switching operation between the two.

  Further, since the reinforcing link 4B8 is interposed between the upper side link 4B5 and the lower side link 4B6, the upper side link 4B5 and the lower side link 4B6 are prevented from being deformed, and the respective link 4B5, 4B6 is in a good operating state. Can be secured.

  Furthermore, since each contact body 4B1, 4B2 is formed from a material having high rigidity, each contact body 4B1, 4B2 by the deformation of each contact body 4B1, 4B2 in the movement restricted state or repeated switching operation. Can be prevented, and an appropriate support state of the support 4 with respect to the base 2 can be ensured.

  In addition, since a plurality of slide switching mechanisms 4B are provided along the slide movement direction, a more stable support state can be realized, and the smoothness of the slide movement is also improved.

  Since the slide switching interlocking mechanism 4F that interlocks and moves the rolling elements 4B3 and 4B4 of each slide switching mechanism 4B based on the operating force applied to the operation lever 4D2, each slide switching mechanism 4B is provided. The operation can be simplified as compared with an aspect that requires individual switching operations.

  In particular, the slide switching interlock mechanism 4F includes a common link pressing body 4D1 to which the base ends 4B52 and 4B62 of the links 4B5 and 4B6 of each slide switching mechanism 4B are connected, and based on the operating force applied to the operating lever 4D2. By operating the link pressing body 4D1, the rolling elements 4B3 and 4B4 provided at the tip portions 4B51 and 4B61 of the links 4B5 and 4B6 are moved in conjunction with each other via the links 4B5 and 4B6 of the slide switching mechanisms 4B. Therefore, the structure of the slide switching interlocking mechanism 4F can be simplified and the stability of the operation can be improved. Further, since the link pressing body 4D1 constituting the switching operation interlocking mechanism 4D also functions as the slide switching interlocking mechanism 4F, it is possible to share parts.

  When attention is paid to the turning switching mechanism 4C, the retractable body 4C1 is provided integrally with the retractable body main body 4C11 and the retractable body main body 4C11 that can be in direct contact or pressure contact with the rotational stopper disk 53, and the retractable body holding frame of the frame body 4A. 4C35 is provided with a retracting body 4C12 that can enter the lower part of the retractable body holding frame 4A35 in contact with or in pressure contact with 4A35, and the turning switching mechanism 4C is retracted in the process of switching from the turning permitted state to the turning restricted state. The retractable body 4C11 is retracted downward by letting the body 4C12 contact or pressure contact with the retractable body presser frame 4A35, and thereby retracting the retractable body 4C11 downward. Pull down downwards, and in turn pull down the top 5 more accurately It is possible.

  In addition, since the retractable body 4C11 is provided with the arcuate insertion guide portion 4C11a and the retractable body 4C12 is provided with the arcuate recessed guide portion 4C12a, the turning stopper accompanying the horizontal turning movement of the retractable body 4C1. The retracting operation of the retractable body 4C1 with respect to the disk 53 and the retracting operation of the retractable body 4C12 with respect to the retractable body holding frame 4A35 can be smoothly performed.

  In particular, since the retractable body 4C1 positioned at the retractable position is provided in or near the support area of the support body 4 by the priority support portion 4A6, the revolving stopper disk 53 is moved downward by the retractable body 4C1. Along with the pull-in operation, at least the area of the top plate 5 in which the turning stopper disk 53 is provided and the vicinity of the area in which the turning stopper disk 3 is provided can be reliably brought into contact with or pressed against the priority support portion 4A6.

  Further, since the turning stopper disk 53 is substantially circular in a plan view and has a center angle that is the same as or slightly larger than the turning angle of the top plate 5 that can turn horizontally, with the turning shaft 5a of the top plate 5 as the center. It is possible to hold the turning stopper disk 53 by the retractable body 4C1 regardless of the turning angle of 5 and the top plate 5 can be firmly received.

  In addition, since the support body 4 has a plurality of priority support portions 4A6 that can be point-supported, and can support the top plate 5 at a plurality of points at any turning angle, the top plate 5 has any turning angle. A stable support state without wobbling is achieved.

  In addition, the top plate 5 is rotatable in a direction that rises with respect to the support body around the hinge axis H1 of the hinge mechanism H, and the turning switching mechanism 4C is configured to turn the top plate 5 relative to the support body 4 in a turn allowable state. Since the lifting operation is allowed and the lifting operation of the top plate 5 is restricted in the turning restricted state, the turning switching mechanism 4C restricts the upward movement of the top plate 5 relative to the support 4 in the lifting direction. It also functions as a mechanism, and it is not necessary to provide a separate lifting operation restricting mechanism, so that the mechanism can be shared and the structure can be simplified.

  The present invention is not limited to the embodiment described in detail above.

  For example, the switching operation interlocking mechanism only needs to interlock the switching operation of the slide switching mechanism and the turning switching mechanism. As the switching operation interlocking mechanism, the operation unit for operating the slide switching mechanism and the turning switching mechanism are operated. Each of which has a separate operation unit, and when an operation force is applied to one of the operation units, the slide switching mechanism and the turning switching mechanism regardless of whether the operation force is applied to the other operation unit. You may apply what links switching operation with.

  Further, the operation lever may not be capable of horizontally turning, but may be movable around the horizontal axis, movable forward and backward, or movable up and down. Similarly, the retractable body, the link pressing body, and the link may not be capable of horizontally turning, but may be movable around the horizontal axis, may be advanced or retracted, or may be vertically movable. .

  Further, the link pressing rolling element may not be provided at the distal end portion of the pressing body of the link pressing body, but the area near the base end of the link may be pressed by the pressing body itself.

  Each of the retracting guide portion and the recessed guide portion of the retractable body may be tapered.

  Moreover, although the aspect which provided the rolling element in the front-end | tip part of a link was illustrated in the said embodiment, a contact body was provided in the front-end | tip part of a link, and a contact body is relatively moved with respect to a rolling element by the movement of a link. Thus, the slide switching mechanism may be configured to be switchable between the movement restricted state and the movement allowable state. In this case, the synchronization mechanism synchronizes the movement of the upper contact body and the movement of the lower contact body.

  Further, the support may be provided with three or more slide switching mechanisms along the slide movement direction, or may be provided with a single slide switching mechanism.

  In addition, the object to which the contact body or the movable body contacts or attaches may be a ceiling wall or a bottom wall, or a non-vertical standing wall (inclined wall) among the inner walls of the rail groove.

  One or three or more rail grooves whose bases are continuously open in a substantially horizontal direction may be formed. Further, a base that extends in a curved shape (circular curved shape or elliptical curved shape) or a base that extends while meandering may be applied.

  In addition, a mode in which a plurality of (for example, two end portions) of the top plate are respectively supported by a plurality of (for example, two) support bodies supported by the same base, or a part of the top plate (for example, one end portion) is integrated. It is also possible to adopt a mode in which the support is supported by the base and the other part (for example, the other end) of the top plate is supported by the support supported by the other base.

  On the other hand, in the case where a part of the top plate is supported by the legs, a leg that is not provided with a moving body at the lower end may be applied. In this case, in order to move the top plate, the top plate may be moved up to a position where the lower end of the leg floats from the floor surface. Further, as long as the top plate that is a support object supported by the support is relatively small, it may be a cantilever type (without legs) supported only by the support. As the top plate, the shape in plan view is circular, elliptical, polygonal, L-shaped, T-shaped, rectangular (including square), or one end side is polygonal and the other end side is partially arcuate Various shapes, such as those forming the above, may be applied. Further, as the support object, a partition, a display, or the like may be adopted instead of the top plate.

  The priority support portions are not limited to those that can be point-supported, and the number of the priority support portions may be appropriately changed according to the weight, shape, etc. of the top plate.

  In addition, instead of the swivel stopper disk, for example, a downward projecting portion provided at a predetermined pitch or continuously on a virtual line corresponding to the swivel trajectory of the top plate is employed on the lower surface side of the top plate as a swallowing target portion. Also good.

  A plurality of turning switching mechanisms may be provided on a single support.

  As the guide portion provided on the base, a protruding portion may be applied instead of the rail groove shown in the embodiment.

  Moreover, as a furniture with a top plate provided with the support body which concerns on this invention, and a top plate, the table which can be used in dining etc. other than the desk shown in the said embodiment is mentioned.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

1 is an overall schematic diagram of a desk according to an embodiment of the present invention. The figure which abbreviate | omits and partially shows the top view of the desk in which the slide switching mechanism and the turning switching mechanism are each in the control state in the same embodiment. The figure which abbreviate | omits and partially shows the side view of the desk in which the slide switching mechanism and the turning switching mechanism are respectively in the control state in the same embodiment. The top view of the support body which concerns on the same embodiment. The side view of the support body which concerns on the same embodiment. The P area | region enlarged view of FIG. The principal part enlarged view of FIG. The figure which shows the upper side contact body which concerns on the same embodiment. The figure which shows the lower side contact body and advance / retreat member which concern on the embodiment. The figure which shows the advance / retreat member receiver which concerns on the same embodiment. The figure which shows the assembly | attachment state of each link which concerns on the embodiment. The figure which shows the assembly | attachment state of the links of each switching mechanism which concerns on the embodiment. The figure which shows the link press body which concerns on the same embodiment. The figure which shows the rotation stopper disc which concerns on the same embodiment. Xx sectional view taken on the line of FIG. The figure which shows the retractable body which concerns on the same embodiment. The figure which shows the operation lever which concerns on the same embodiment. The figure which abbreviate | omits and partially shows the top view of the desk in which the slide switching mechanism and the turning switching mechanism are each in a permission state in the same embodiment. The Q area enlarged view of FIG. The figure which shows the principal part expansion corresponding to FIG. 7 in which the slide switching mechanism and the turning switching mechanism are each in an allowable state in the same embodiment. The figure which shows the one aspect | mode which swung the top plate in the same embodiment corresponding to FIG. The figure which abbreviate | omits and partially shows the top view of the desk in which the slide switching mechanism and the turning switching mechanism are each in a permission state in the same embodiment.

Explanation of symbols

1 ... Furniture with a top board (desk)
2 ... Base 21, 22 ... Guide part (upper rail groove, lower rail groove)
21a ... Opening side standing wall 22b ... Back side standing wall 4 ... Support body 4A ... Frame body 4A35 ... Retracting body pressing frame 4A6 ... Preferential support part 4B ... Slide switching mechanism 4B1 ... Upper side contact body 4B2 ... Lower side contact body 4B3 ... Upper side rolling element 4B4 ... Lower side rolling element 4B5 ... Upper side link 4B6 ... Lower side link 4B8 ... Reinforcement link 4C ... Turning switching mechanism 4C1 ... Retracting body 4C11 ... Retracting body 4C11a ... Retraction guide part 4C12 ... Dive Body 4C12a ... Sneaking guide portion 4D ... Switching operation interlocking mechanism 4D1 ... Link pressing body 4D11 ... Supporting portion 4D12 ... Pressing body main body 4D2 ... Operating portion (operating lever)
4D3 ... Operating lever shaft 4D5 ... Upper side link pressing rolling element 4D6 ... Lower side link pressing rolling element 4D51, 4D61 ... Hut 4E ... Synchronizing mechanism 4F ... Slide switching interlocking mechanism 5 ... Supported object (top plate)
53 ... Pinching target part (turning stopper disk)

Claims (22)

A support that is slidably supported by a base extending in a predetermined direction and that can horizontally support the top plate;
A slide switching mechanism that is switchable between a movement restriction state that restricts slide movement relative to the base and a movement permission state that permits slide movement relative to the base;
A turning switching mechanism capable of switching between a turning restriction state for restricting horizontal turning of the top plate and a turning permission state for allowing horizontal turning of the top plate;
A support body comprising a switching operation interlocking mechanism for interlocking a switching operation of the slide switching mechanism and a switching operation of the turning switching mechanism. The switching operation interlocking mechanism includes a single operation unit, and applies a predetermined operating force to the operation unit, thereby interlocking the switching operation of the slide switching mechanism and the switching operation of the turning switching mechanism. The support according to claim 1, which is a material. The operation unit is capable of horizontal turning, and the slide switching mechanism is switched from a movement restricted state to a movement permitted state by applying an operation force that the user always pulls regardless of whether the operation unit is forward or reverse, and The support body according to claim 2, wherein the turning switching mechanism is switched from a turning restriction state to a turning permission state. The base has a guide part provided continuously along the extending direction,
The slide switching mechanism has a rolling element and an abutting body, and either the rolling element or the abutting body is provided at the tip portion thereof, so that the contact is given priority over the rolling element by the movement of a horizontally pivotable link. A movement restriction state in which the contact body is brought into contact with the guide portion, and a movement allowable state in which the contact state between the contact body and the guide portion is released and the rolling element is brought into contact with the guide portion. Which can be switched between,
The swivel switching mechanism moves between a swallowable position at which a swallowing target portion provided integrally or integrally on the lower surface side of the top plate can be swallowed and a swallowing release position at which the swaging state is released. The retractable body is provided, and by moving the retractable body, the retractable object portion is retracted and the lower surface of the top plate is brought into contact with or pressed against a part of the support body. Switchable between a turning restriction state for restricting horizontal turning of the top plate and a turning permission state for allowing horizontal turning of the top plate by releasing the pinching state,
The switching operation interlocking mechanism is
A link pressing body that can move between a non-pressing position that does not press the proximal end portion region of the link and a pressing position that can press the proximal end portion region of the link;
An operation portion provided integrally or integrally with the retractable body and the link pressing body,
When a predetermined operating force is applied to the operation unit, the link is moved by moving the link pressing body between the non-pressing position and the pressing position based on the operating force. The support according to claim 1, 2, or 3, wherein the retractable body is moved between the retractable position and the retracting position. The operation part is capable of horizontal turning, and the link pressing body horizontally turns between the non-pressing position and the pressing position in accordance with the horizontal turning of the operation part, and the retracting body The support body according to claim 4, wherein the support body is configured to turn horizontally between a possible position and the pricking release position. The link pressing body is provided with a support portion that supports the retractable body and the operation portion at one end portion, and a bifurcated pair of pressing portions that can press different portions in the vicinity of the base end portion of the link at the other end portion. A body body is provided, which is turnable together with the retractable body and the operation portion around a vertical axis provided at a branch point portion of the pressing body body,
When the operation unit is positioned at a normal position, the link pressing body is positioned at a non-pressing position where none of the pressing body main body presses the proximal end portion vicinity region of the link,
When the operation unit is horizontally turned from the normal position in either the forward or reverse direction, either one of the pair of pressing body bodies that form the pair presses the area near the base end of the link. Positioned at the first pressing position,
When the operation unit is turned horizontally from the normal position in either the forward or reverse direction, the other of the pair of pressing body main bodies with which the link pressing body makes the pair presses the region near the base end portion of the link. 2 is located at the pressing position,
The slide switching mechanism is moved between the movement restricted state and the movement allowed state by horizontally turning the link in conjunction with the movement of the link pressing body between the non-pressing position and the first pressing position or the second pressing position. The support according to claim 4 or 5 , wherein the support is switchable between the two. The support body according to claim 6, wherein a link pressing rolling element capable of pressing the link while being in contact with a proximal end portion vicinity region of the link is provided at a distal end portion of the pressing body main body. The support body according to claim 7, wherein the link pressing rolling element is provided with a flange portion that restricts the vertical movement of the link. The guide portion is a rail groove;
The rail grooves are provided in pairs at positions spaced apart in the height direction of the base,
Each of these rail grooves is provided with an opening-side standing wall provided on the opening side, and a back-side standing wall provided behind the opening and facing the opening-side standing wall,
The slide switching mechanism is in contact with the upper abutment body and the upper rolling element that abuts or contacts the opening side standing wall of the upper rail groove, and the rear side standing wall of the lower rail groove, or The support according to claim 4, 5, 6, or 7, comprising a lower contact member and a lower rolling member that are in contact with each other. The synchronization mechanism that synchronizes the movement of the upper contact body and the lower contact body, or the movement of the upper rolling body and the movement of the lower rolling body is provided. Support. The synchronization mechanism includes an upper link in which either one of the upper contact body or the upper rolling body is provided directly or indirectly at the tip, and the lower contact body or the lower rolling body. A predetermined operating force applied, comprising a lower link provided either directly or indirectly at the tip, and a link shaft that is a common rotation axis of the upper link and the lower link. The support according to claim 10, wherein the movement of the abutments or the movement of the rolling elements is synchronized by horizontally turning the upper link and the lower link about the link axis. The tip of the upper link is positioned in one region and the tip of the lower link in the other region, with a virtual straight line passing through the center of the vertical axis and substantially orthogonal to the slide movement direction as a boundary. The support according to claim 11, wherein: The support body according to claim 11 or 12, wherein a link reinforcing body is interposed between the upper side link and the lower side link. The support according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or 13, wherein a plurality of the slide switching mechanisms are provided along the slide movement direction. The support according to claim 14, further comprising a slide switching interlocking mechanism that interlocks a switching operation between the slide switching mechanisms based on an operating force applied to the operation unit. The slide switching interlocking mechanism includes a common link pressing body that can press the area near the base end of the link of each slide switching mechanism, and each slide is operated by operating the link pressing body based on the operation force. The support according to claim 15, wherein the link of the switching mechanism is rotated, and any one of the contact bodies or the rolling elements provided at the distal ends of each link is moved in conjunction with each other. It is provided with a frame body arranged on the lower surface side of the top plate,
In the state where the retractable body is provided with a retractable body main body that can be in direct contact or pressure contact with the object to be squeezed, integrally or integrally with the retractable body main body, and in contact with or in pressure contact with part of the frame body A submerged body that can sink under a part of the frame body, and is capable of horizontally turning between the swivelable position and the swivel release position;
In the process of switching the turning switching mechanism from the turning permitted state to the turning restricted state, the submerged body is brought into contact with or pressed against a part of the support body to be submerged below a part of the support body. The support according to claim 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, or 16, wherein the retractable body is retracted downward. The support body according to claim 17, wherein an arcuate or tapered scooping guide portion is provided on the pulling body main body so that the pulling operation of the pulling body with respect to the scooping target portion is made smooth. The support according to claim 17 or 18, wherein an arcuate or tapered submerged guide portion is provided in the submerged body in order to smoothly perform the submerged operation of the submerged body with respect to a part of the frame body. A priority support portion that contacts the lower surface of the top plate with priority over other parts at any turning angle that can be taken by the top plate, and the retractable body that is positioned at the swivelable position is a support region by the priority support portion. 20. A support according to claim 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19 positioned in or near the support area. Connected to the top plate via a lifting operation allowing mechanism that allows relative movement in the direction of lifting the top plate,
The swivel switching mechanism is configured to allow the top plate to lift when the swivel is permitted, and restrict the lift operation of the top when the swivel is restricted. The support according to 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20. A base having a guide part provided continuously along the extending direction, a support according to any one of claims 1 to 21 supported by the base so as to be slidable using the guide, and the support A furniture with a top plate, characterized by comprising a top plate that is supported so as to be horizontally rotatable.

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