JP4946375B2 - Furniture with a top plate - Google Patents

Description

  The present invention relates to furniture with a top board.

2. Description of the Related Art Conventionally, various furniture with a top plate having a top plate in which one end is a support such as a bracket and the other end is supported by a leg is known. This type of top plate is mainly a fixed type that does not change its position with respect to the base, and is integrally joined to the support by bolting or the like (see Patent Document 1).
JP 2004-344573 A

  By the way, it is possible to change the relative position of the top plate with respect to the base by supporting the support on a base in which guide portions such as rail grooves are continuously provided along the extending direction and moving the support along the guide portions. When providing furniture with a top plate, the conventional one is integrally joined by bolting or the like to the support and the top plate, so when changing the relative position of the top plate to the base, the support In the state where the top plate is supported on the base plate, that is, in the state where the top plate is heavily loaded by the support body, the support body must be moved along the guide portion along the base, and the load on the support body is large and the movement The trouble that operation becomes heavy arises. Also, when changing the relative position of the top plate to the base, if the operation of lifting the top plate is necessary to lift the legs off the floor, the conventional one integrates the support and the top plate. Further, there is a problem that an operation force for simultaneously lifting the support body together with the top plate is required, and the relative position of the top plate with respect to the base cannot be easily changed.

  Furthermore, if the support and the top plate are integrally joined by bolting or the like, the top plate is supported before and after the relative position of the top plate is changed with respect to the base due to unevenness of the floor surface. In the process of changing the state or using the casters provided on the legs to translate the support and the top plate along the base, the unevenness of the floor cannot be absorbed and the moving operation is performed smoothly. There is also a problem that it cannot be done.

  The present invention has been made paying attention to such problems, and a main object thereof is to provide a furniture with a top plate that can easily change the relative position of the top plate with respect to the base with a light operating force. It is in.

  That is, the furniture with a top plate of the present invention includes a base that extends in a predetermined direction, a support that is supported so as to be movable in parallel along the extending direction of the base, and one end supported by the support and the other end. A furniture with a top plate having a top portion supported by a leg, and the support body via a lifting operation permission mechanism that allows relative movement of the top plate in the lifting direction with respect to the support body. The top plate is connected to the top plate.

  If it is such, when changing the relative position of the top plate to the base (relative position along the longitudinal direction of the base), that is, when moving the top plate relative to the base, When the operating force to lift the top plate is applied, the lifting movement allowance mechanism allows the top plate to move relative to the support in the direction of lifting, so that the load on the top plate received by the support can be released through this relative movement. Since the load on the top plate acting on the support body is reduced, the burden on the support body is reduced compared to the conventional mode in which the support body and the top plate are integrally joined so that the relative angle cannot be changed. The relative position change (parallel movement) with respect to the base of the support and the top plate can be easily performed with a light operating force. In addition, since the top plate can move relative to the support in the direction in which it rises, the unevenness of the floor can be absorbed through this relative movement, and the top plate can be smoothly moved relative to the base via the support. It is possible to suppress the backlash caused by unevenness.

  In particular, the lifting operation allowing mechanism may be formed on a pin, a top plate side holding portion formed on a part of the top plate and capable of holding the pin, and formed on a part of the support body and holding the pin. A support-side holding portion, and the pin is held in the top-plate-side holding portion and the support-side-side holding portion, and is rotated or tilted to move the top plate relative to the support in the lifting direction. Can be reliably moved by using the rotation or tilting of the pin, while simplifying the structure.

  In addition, the top plate is pivotable with respect to the support, and the lift operation permission mechanism is provided with a relative movement of the top plate in the lifting direction regardless of the pivot angle of the top plate. If the non-directional movement allowance means is provided, the top plate can be moved relative to the support regardless of the turning angle of the top plate, and the relative position of the top plate relative to the base can be changed. It can be easily performed.

  The top plate side holding portion has a top plate side holding hole capable of holding the pin in a substantially unplayed state, and the support side holding portion can hold the pin in a playable state. In the case of having a hole, as a preferred embodiment of the non-directional movement permitting means, when the top plate is rotated in the floating direction, the pin is moved according to the turning angle of the top plate. There is an embodiment in which the top plate is allowed to move in the rising direction by rotating or tilting in the support-side holding hole regardless of the turning angle of the top plate. In this case, if the support-side holding hole is a long hole, the movement of the hinge shaft in the support-side holding hole can be secured with a simple shape.

  In addition, the support body includes a priority support portion that can contact the lower surface of the top plate with priority over other parts in a state in which movement of the top plate in the lifting direction is restricted. If the operation allowing mechanism is positioned at a position deviated from the support area by the priority support portion, the priority support portion ensures a good support state and the top plate is rotated in the floating direction with respect to the support body. Thus, the brake by the priority support portion is not applied to the lifting operation of the top plate, and the lifting operation of the top plate can be performed smoothly.

  The support body changes a relative angle with respect to the base by jumping up with respect to the base in accordance with switching from a movement restriction state in which movement with respect to the base is restricted to a movement permission state in which movement with respect to the base is permitted. Yes, if the lifting operation permission mechanism allows relative movement in the direction in which the top plate lifts with respect to the support in accordance with the relative angle change of the support, the support is moved from the movement restricted state to the movement permitted state. In a mode in which the support body changes relative angle to the base when switching to, the top plate rotates in the direction of lifting from the support body via the lifting operation allowing mechanism in accordance with the change of the relative angle of the support body to the base. Can release the load on the top plate received by the support, and the support can be switched with a light operating force. And it is possible to easily perform a relative position change to the base of the top plate with a light operating force.

  In order to prevent an unexpected lifting operation of the top plate, a rotation restricting state that restricts the rotation of the top plate in the lifting direction, and a lifting operation permission state that allows the top plate to rotate in the lifting direction. What is necessary is just to be provided with the top plate floating regulation mechanism which can be switched between.

As a preferred embodiment of the top plate levitation regulating mechanism, the top plate is moved in the ascending direction of the top plate by being in a state where the top target is integrally or integrally provided on the lower surface side of the top plate. There is an aspect in which the rotation of the top plate is permitted by restricting the rotation and releasing the pinching state.

  As described above, according to the present invention, the top plate moves in the direction of lifting from the support via the lifting operation allowing mechanism, so that the load on the top received by the support through the movement of the top can be released. It is possible to easily change the relative position of the top plate with respect to the base with a light operating force.

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

  The desk 1 according to this embodiment includes a base 2 extending in the horizontal direction, a base support 3 that supports the base 2, a support 4 that is slidably supported along the base 2, and a support 4. A top plate 5 that supports one end, and a leg 6 that supports the other end of the top plate 5 and contacts 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 in the present invention, and cannot slide with respect to the base 2.

  As shown in FIGS. 1, 4 and 5, the base 2 has a substantially quadrangular prism shape extending substantially linearly. Rail grooves 21 and 22 functioning as top plate guide portions for guiding the movement of the support 4 are provided in a pair of upstanding surface portions 2A facing each other along the longitudinal direction of the base 2. 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 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 option member guide portion. 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. In addition, end caps 2C are detachably attached to both ends of the base 2 (see FIG. 1, while FIGS. 4 and 5 and FIGS. Shows base 2).

  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. 4 and 5 and FIGS. 9 and 10 described later, the auxiliary base supports 31 and 32 are omitted.

  As shown in FIGS. 3 to 6 and the like, the support 4 includes a support body 41 that supports the top plate 5 and a slide device 42 that is slidable along the rail grooves 21 and 22. is there.

  The support body 41 supports a predetermined region on one end side of the top plate 5 from below. The support body 41 according to the present embodiment includes a frame body 411 and a priority support portion 412 that protrudes upward from the upper surface portion of the frame body 411 and contacts the lower surface of the top plate 5 with priority over the frame body 411. It is a thing.

  The frame body 411 is a pair of opposed frames 411a that are substantially orthogonal to the longitudinal direction of the base 2 and are opposed to each other when supported by the base 2, and a single distal frame 411b that is positioned on the distal end side of the opposed frame 411a. The pair of connection frames 411c that connect the end portions of the opposing frames 411a and the end portions of the end frame 411b are integrally rigidly connected by welding or the like. The upper surface portions of the frames 411a, 411b, and 411c are substantially flush. A reinforcing frame 411d is integrally rigidly connected between the inner surface portions at the base end portion of the opposing frame 411a. The upper surface portion of the reinforcing frame 411d is set to be lower than the upper surface portions of the other frames 411a, 411b, and 411c. Each of the frames 411a, 411b, 411c, and 411d has a rectangular tube shape.

  In the present embodiment, the priority support portion 412 is configured as a support pin that protrudes upward from the upper surface portion of the frame body 411 as the priority support portion 412. In the present embodiment, as will be described later, the top plate 5 can be horizontally swiveled with respect to the support body 4, and the top plate 5 is at least mounted regardless of the relative angle of the top plate 5 with respect to the support body 4. The attachment positions of the plurality of priority support portions 412 are set so that a plurality of points can be supported. Specifically, a total of four priority support portions 412 are provided in the vicinity of the distal end portion and the proximal end portion (more specifically, in the vicinity of the joint portion of the reinforcing frame 411d) of each of the opposed frames 411a. Each priority support portion 412 includes a nut 412a fixed to the upper surface portion of the frame body 411, and a pin body 412b that can be screwed into the nut 412a (see FIG. 5).

  As shown in FIGS. 3 to 7, the slide device 42 includes a slider body 421, a pair of switching units 422, an interlocking mechanism 423 that operates these switching units 422 in conjunction with each other, and an operation for performing a predetermined operation. Part 424.

  The slider main body 421 is disposed at a position where a predetermined gap can be formed between the main body portion 4211 extending along the longitudinal direction of the base 2 and the main body portion 4211 and is substantially parallel to the main body portion 4211. (Refer to FIG. 6 and FIG. 7).

  The main body portion 4211 is directed to the front from the standing piece 4211a facing the standing surface 2A of the base 2, the pair of side pieces 4211b extending forward from both ends of the standing piece 4211a, and the upper and lower edges of the standing piece 4211a. And an upper piece 4211c and a lower piece 4211d. In the present embodiment, the upright pieces 4211a, the side pieces 4211b, the upper pieces 4211c, and the lower pieces 4211d are formed by bending a single steel plate. Further, a reinforcing piece 4211e for preventing deformation of the main body 4211 is provided between the upper piece 4211c and the lower piece 4211d at both ends of the main body 4211 (see FIGS. 3 and 5).

  In addition, a pair of first connection stays 43 extending in a direction substantially orthogonal to the longitudinal direction of the main body part 4211 are integrally attached to portions near both ends of the main body part 4211 by welding or the like, and these first connection stays 43 are attached. A reinforcing body 4212 is provided between the inward surfaces. A second connection stay 44 is integrally attached by welding or the like between the upper surface of the rear end portion of the first connection stay 43 and the lower surface of the front end portion of the opposite frame 411a of the frame body 411 (see FIG. 3 and FIG. 3). (See FIG. 5).

  The reinforcing body 4212 includes an upright piece 4212a facing the upright piece 4211a of the main body portion 4211, and an upper piece 4212b and a lower piece 4212c extending from the upper and lower edges of the upright piece 4212a toward the frame body 411 side (on the side opposite to the base 2). The cross sectional view is substantially U-shaped. Both ends of the reinforcing body 4212 are integrally attached to the inward surface of the first connection stay 43 by welding or the like (see FIGS. 6 and 7).

  As shown in FIGS. 3 to 7, each switching unit 422 includes an upper abutment body 4 </ b> A that can abut against the opening side standing wall 21 a of the upper rail groove 21, and a rear side standing wall 22 b of the lower rail groove 22. 4B, the lower rolling body 4C that can contact the opening side standing wall 21a of the upper rail groove 21, and the lower side that can contact the rear side standing wall 22b of the lower rail groove 22. The side rolling element 4 </ b> D and a switching mechanism 4 </ b> E that can be switched between a movement restriction state that restricts the movement of the slide device 42 and a movement permission state that permits the movement of the slide device 42 are provided.

  The upper contact body 4A is positioned at a position closer to the opening side standing wall 21a side of the upper rail groove 21 than the upper rolling body 4C in the movement restricted state. In the present embodiment, as the upper contact body 4A, an upper projecting piece that takes the upper piece 4211c of the main body portion 4211 to the base 2 side (forward) and projects upward is applied. That is, the upper contact body 4A is integrally formed with the main body portion 4211 constituting the slider main body 421, and has excellent rigidity made of a steel plate.

  The lower contact body 4B 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 4D in the movement restricted state. In the present embodiment, a block-shaped member formed from a highly rigid material is used as the lower contact member 4B. The lower abutting body 4B is attached to the distal end portion of an advancing / retreating member 4F that can move back and forth with respect to the main body portion 4211 of the slider main body 421 (see FIGS. 5 and 7). In the present embodiment, a bolt capable of moving back and forth by a screw feed action is applied as the advance / retreat member 4F. The advancing / retracting member 4F can be screwed into a nut 4211g that is non-rotatably held by a nut holding piece 4211f provided continuously to the lower piece 4211d of the main body portion 4211, and is in downward contact with the tip portion. It has the collar part 4Fa which can press the back surface part of the body 4B. The lower abutting body 4B is provided with guide members 4Ba extending rearward from the back surface portion, and the guide members 4Ba are inserted into guide holes (not shown) formed in the nut 4211g, so that the advancing / retreating members are provided. The advancing / retreating movement of the lower contact body 4B accompanying the advancing / retreating movement of 4F can be performed accurately and smoothly. In the present embodiment, as the guide member 4Ba, a pair of pin-shaped members provided in a position parallel to the advance / retreat member 4F and sandwiching the advance / retreat member 4F are applied.

  The upper rolling element 4C is positioned at a position farther from the opening side standing wall 21a of the upper rail groove 21 than the upper rolling element 4C in the movement restricted state. In the present embodiment, a pair of rollers capable of rotating around the vertical axis is applied as the upper rolling element 4C. The pair of upper rolling elements 4C is supported by a common upper roller support 4Ca.

  The lower side rolling element 4D 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 4D in the movement restricted state. In the present embodiment, a pair of rollers capable of rotating around the vertical axis is applied as the lower contact body 4B. The pair of lower rolling elements 4D is supported by a common lower roller support 4Da.

  The switching mechanism 4E includes a movement restriction state in which the contact bodies 4A and 4B are brought into contact with the standing walls 21a and 22b of the rail grooves 21 and 22 in preference to the rolling bodies 4C and 4D, and the contact bodies 4A. By moving the rolling elements 4C and 4D relative to 4B, the contact state between the contact bodies 4A and 4B and the standing walls 21a and 22b of the rail grooves 21 and 22 is released, and The movable bodies 4C and 4D can be switched between a movement allowable state in which the moving bodies 4C and 4D are brought into contact with the standing walls 21a and 22b of the rail grooves 21 and 22, respectively.

  In the present embodiment, the slide device 42 is provided with a synchronization mechanism 4G that synchronizes the movement of the upper rolling element 4C and the movement of the lower rolling element 4D.

  As shown in FIGS. 6 and 7, the synchronization mechanism 4G includes an upper link 4G1 provided with an upper rolling element 4C at the tip, a lower link 4G2 provided with a lower rolling element 4D at the tip, and these A vertical shaft 4G3 that is a common rotation axis of the upper side link 4G1 and the lower side link 4G2 is provided, and the upper side link 4G1 and the lower side link 4G2 are centered on the vertical axis 4G3 based on the operation force applied to the operation unit 424. The movement of the upper rolling element 4C and the movement of the lower rolling element 4D are synchronized with each other by horizontally turning.

  The upper side link 4G1 is provided with the upper side roller support 4Ca that supports the upper side rolling element 4C at the distal end portion 4G1a. The upper side link 4G1 forms a relative angle at which the distal end portion 4G1a and the proximal end portion 4G1b can be substantially orthogonal to each other, and the distal end portion 4G1a and the proximal end portion 4G1b are connected by a long connecting portion 4G1c (see FIG. 6). An inwardly bulging portion 4G1d that bulges inward is provided in the vicinity of the tip portion 4G1a of the upper side link 4G1, and a vertical shaft insertion hole (not shown) into which the vertical shaft 4G3 can be inserted into the inwardly bulging portion 4G1d. Is forming. Moreover, the long hole 4G1e is formed in the base end part 4G1b of the upper side link 4G1. The region in the vicinity of the front end 4G1a of the upper link 4G1 can be placed on the upper piece 4211c of the main body 4211 of the slider main body 421.

  The lower side link 4G2 is configured such that the lower side roller support body 4Da that supports the lower side rolling element 4D is provided at the distal end portion 4G2a via the adjustment link 4G21. The lower link 4G2 has a relative angle at which the distal end portion 4G2a and the proximal end portion 4G2b can be substantially orthogonal to each other, and the distal end portion 4G2a and the proximal end portion 4G2b are connected by a long connection portion 4G2c (FIG. 7). reference). When the longitudinal dimension of the connection part 4G2c is set smaller than the connection part 4G1c of the upper side link 4G1, and the lower side link 4G2 and the upper side link 4G1 are overlapped, the front end part 4G2a of the lower side link 4G2 is the upper side in plan view. The link 4G1 is set so as to be positioned on the inward side of the distal end portion 4G1a. An outward bulging portion 4G2d that bulges outward is provided in a region in the vicinity of the tip portion 4G2a of the lower side link 4G2, and the outward bulging portion 4G2d communicates with an insertion hole for a vertical shaft formed in the upper side link 4G1. A shaft hole for a vertical shaft to be obtained is formed. Further, a long hole 4G2e is formed in the base end portion 4G2b of the lower link 4G2. A region in the vicinity of the front end portion 4G2a of the lower side link 4G2 is positioned on the lower surface side of the lower piece 4211d of the main body portion 4211.

  In the present embodiment, the reinforcing link 4G4 is interposed between the upper link 4G1 and the lower link 4G2. The reinforcing link 4G4 has a plate shape and is interposed between the upper link 4G1 and the lower link 4G2 in a standing posture. More specifically, the reinforcing link 4G4 is interposed between the connecting portions 4G1c and 4E21a of the upper side link 4G1 and the lower side link 4G2 (see FIGS. 6 and 7). The links 4G1, 4G2 and the reinforcing links 4G4 are assembled by engaging the protrusions 4G41 of the reinforcing links 4G4 with the mounting holes 4G1f, 4G2f provided in the connecting portions 4G1c, 4G2c of the links 4G1, 4G2. be able to.

  The vertical shaft 4G3 can be continuously inserted into each vertical shaft shaft hole formed in the upper link 4G1 and the lower link 4G2. In this embodiment, the upper piece 4211c and the lower piece 4211d of the main body portion 4211 are also formed with communication holes (not shown) that communicate with the vertical shaft shaft holes, and the vertical shaft 4G3 is also connected to these communication holes. Is inserted. Note that the vertical shaft 4G3 is prevented from coming off by a large-diameter head, a fastener such as an E-ring, or caulking.

  Then, as shown in FIGS. 6 and 7, one region (specifically, on the outer side) is bounded by a virtual straight line L that passes through the center of the vertical axis 4G3 and is substantially orthogonal to the slide movement direction. The tip 4G1a of the upper link 4G1 is positioned in the region), and the tip 4G2a of the lower link 4G2 is positioned in the other region (specifically, the inner region). As a result, when a force that rotates about the vertical shaft 4G3 is applied to the upper link 4G1 and the lower link 4G2, the upper rolling element 4C provided at the tip of the upper link 4G1 is moved to the upper rail. While moving toward the opening side standing wall 21a of the groove 21, the lower side rolling element 4D provided at the tip of the lower side link 4G2 (via the adjustment link 4G21) is the rear side standing wall of the lower side rail groove 22 Provided at the tip of the upper link 4G1 when a force is applied to the upper link 4G1 and the lower link 4G2 to rotate in the reverse direction about the vertical shaft 4G3. The upper rolling element 4C moves in a direction away from the opening-side standing wall 21a of the upper rail groove 21, and at the tip of the lower link 4G2 (via the adjustment link 4G21). Te) lower rolling member 4D provided to move in a direction away from the deeper-side upright wall 22b of the lower rail groove 22. With the above configuration, the movement of the upper rolling element 4C and the movement of the lower rolling element 4D accompanying the switching operation can be synchronized.

  The slide device 42 according to the present embodiment in which the switching unit 422 having such a configuration is provided in pairs at positions separated along the slide movement direction includes an interlocking mechanism 423 that operates the switching units 422 in conjunction with each other. I have.

  As shown in FIGS. 6 and 7, the interlocking mechanism 423 includes a common link interlocking body 4231 that connects the base end portions 4G1b and 4G2b of the links 4G1 and 4G2 of the switching units 422, and an operation unit 424. The link 4G1 and 4G2 of each switching unit 422 are interlocked by operating the link interlocking body 4231 on the basis of the operating force applied to the rolling elements 4C1 and 4G2 provided at the tip portions 4G1a and 4G2a. 4Ds are moved simultaneously or substantially simultaneously.

  The link interlocking body 4231 has a standing piece 4231a having a height dimension smaller than the separation dimension along the height direction of the upper side link 4G1 and the lower side link 4G2, and a pair extending forward from both ends of the standing piece 4231a. Side piece 4231b, and an upper piece 4231c and a lower piece 4231d extending forward from the upper and lower edges of the standing piece 4231a, respectively. In the present embodiment, the upright pieces 4231a, the side pieces 4231b, the upper pieces 4231c, and the lower pieces 4231d are formed by bending a single steel plate. A pair of link shaft insertion holes (not shown) are formed in the upper piece 4231c and the lower piece 4231d of the link interlocking body 4231, respectively, and are formed in each link shaft insertion hole and each link 4G1, 4G2 of each switching unit 422. By inserting the link shaft 4232 in a state where the elongated holes 4G1e and 4G2e communicate with each other, the link interlocking body 4231 and each switching unit 422 are associated with each other. Each link shaft 4232 is secured by a large-diameter head, a fastener such as an E-ring, or caulking. The link interlocking body 4231 having such a configuration is a space formed between the main body portion 4211 of the slider main body 421 and the reinforcing body 4212 based on an operation force applied to the operation portion 424 described below. It is set to be able to advance and retreat using (gap).

  As shown in FIGS. 6 and 7, the operation unit 424 includes a slide operation lever 4241 for a user to directly apply an operation force, a slide operation lever shaft 4242 that is a rotation axis of the slide operation lever 4241, and the slide A slide operation lever abutting plate 4243 for restricting the rotation angle of the operation lever 4241 is provided.

  The slide operation lever 4241 has a knob 4241a at the distal end and a cam surface 4241b at the proximal end. The height of the slide operation lever 4241 is set to be smaller than the distance between the upper piece 4212b and the lower piece 4212c of the reinforcing body 4212 so that it can be accommodated inside the reinforcing body 4212.

  The slide operation lever abutment plate 4243 includes a pair of left and right contact portions 4243a with which a part of the slide operation lever 4241 can contact, an upper piece 4243b connecting the upper ends of the contact portions 4243a, and the contact portions 4243a. And a pair of side pieces 4243d extending forward from the side edge of each contact portion 4243a, and a predetermined angle of the slide operation lever 4241 is provided between the contact portions 4243a. A space allowing rotation within the range is formed. In the present embodiment, the contact portion 4243a, the upper piece 4243b, the lower piece 4243c, and the side piece 4243d are formed by bending a single steel plate. The height of the slide operation lever abutment plate 4243 is set larger than the height of the slide operation lever 4241 and smaller than the separation distance between the upper piece 4212b and the lower piece 4212c of the reinforcing body 4212, and the slide operation lever 4241 is set. At the same time, it can be accommodated inside the reinforcing body 4212. The slide operation lever abutment plate 4243 is integrally attached to the rear surface portion of the upright piece 4212a of the reinforcing body 4212 by welding or the like. Then, a slide operation lever shaft 4242 can be inserted into the upper end 4212b and lower piece 4212c of the reinforcing body 4212, the upper piece 4243b and lower piece 4243c of the slide operation lever abutment plate 4243, and the base end of the slide operation lever 4241, respectively. By inserting the slide operation lever shaft 4242 in a state where the operation lever shaft insertion holes (not shown) are formed and the slide operation lever shaft insertion holes are in communication with each other, the reinforcing body 4212 and the slide operation lever abutment plate are inserted. 4243 and the slide operation lever 4241 are associated with each other, and the slide operation lever 4241 can be rotated about the slide operation lever shaft 4242. Note that the standing piece 4212a of the reinforcing body 4212 is formed with a notch for avoiding interference between the base end portion of the slide operating lever 4241 and the reinforcing body 4212 when the slide operating lever 4241 is rotated.

  The top plate 5 connected to the support 4 via the hinge mechanism H, which is the “floating operation permitting mechanism” of the present invention, is rotated horizontally with respect to the support 4 as shown in FIGS. The movable top plate 51 includes a movable top plate 51 and a turning mechanism 52 that supports the movable top plate 51 so as to be horizontally turnable and is connected to the support 4 via a hinge mechanism H. In the description of the top plate 5 below, the base 2 side is the front and the opposite side is the rear.

  The movable top plate 51 includes a movable top plate main body 511 and a top plate receiving portion 512 that supports the movable top plate main body 511.

  The movable top plate 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. Further, the maximum longitudinal dimension of the movable top plate 51 is set to be substantially the same as or slightly smaller than the longitudinal dimension of the base 2.

  The top plate receiving portion 512 includes a top plate receiving portion main body 5121 that supports the lower surface portion of the movable top plate main body 511 (the lower surface portion in the first half region of the movable top plate main body 511 in the illustrated example), and the top plate receiving portion main body 5121. And a turning stopper rail 5122 provided so as to protrude downward. The turning stopper rail 5122 functions as the “pinch target portion” of the present invention, and the detailed shape and the like will be described later. The top plate receiving portion main body 5121 and the turning stopper rail 5122 are integrally attached to the lower surface side of the movable top plate main body 511 by screwing or the like.

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

  The turntable 521 uses, for example, a thrust bearing. The radius of the turntable 521 is set smaller than the radius of the turn stopper rail 5122 so that the turntable 521 and the turn stopper rail 5122 do not interfere with each other. Further, the height dimension of the turntable 521 is set smaller than the height dimension of the turning stopper rail 5122.

  As shown in FIGS. 2 and 8, the turntable receiver 522 includes a turntable receiving body 5221 that supports the entire lower surface portion of the turntable 521, and a hinge shaft support 5222 provided on the lower surface side of the turntable receiving body 5221. It is equipped with. In this embodiment, the turntable receiving body 5221 and the hinge shaft support 5222 are integrally assembled by a suitable means such as a plurality of screws. Details of the hinge shaft support 5222 will be described later. In addition, a turning stopper mechanism mounting hole 5223 for forming a turning stopper mechanism 4K (see FIG. 4) is formed in the center of the turntable receiver 522. The opening shape of the turning stopper mechanism mounting hole 5223 has a rectangular shape. When the turning stopper mechanism 4K is attached to the turning stopper mechanism mounting hole 5223, the turning stopper mechanism 4K rotates within the turning stopper mechanism attachment hole 5223. It is set not to move.

  The leg body 6 that supports the other end of the top plate 5 includes a leg main body 61 and a moving body 62 (a caster in the illustrated example) provided at the lower end of the leg main body 61.

  Therefore, the desk 1 according to the present embodiment connects the top plate 5 and the support body 4 via the hinge mechanism H.

  As shown in FIG. 8, the hinge mechanism H includes a hinge shaft H <b> 1 that is a “pin” of the present invention, a hinge shaft support body 5222 (corresponding to a “support body side holding portion” of the present invention) of the rotary base 522, A hinge bearing body 4111 (corresponding to the “top plate side holding portion” of the present invention) provided on the frame body 411 is provided.

  The hinge shaft H1 has a substantially pin-like shape integrally including a shaft portion and a head having a larger diameter than the shaft portion.

  As shown in FIGS. 2 and 8, the hinge shaft support 5222 has a horizontal piece 5222a and a pair of hanging pieces 5222b that are suspended downward from both side edges of the horizontal piece 5222a. In addition, a hinge shaft first insertion hole 5222c (corresponding to the “support side holding hole” of the present invention) into which the hinge shaft H1 can be inserted is formed in each hanging piece 5222b. Each hinge shaft first insertion hole 5222c can hold the hinge shaft H1 in a substantially free state. The pair of drooping pieces 5222b is provided in the vicinity of the rear end portion of the horizontal piece 5222a, and a pair of drooping pieces in the turntable support 522 in which the hinge shaft support body 5222 and the turntable receiving body 5221 are integrally assembled. The piece 5222b and the first insertion hole 5222c for the hinge shaft are positioned in the vicinity of the rear edge of the turntable receiver 522.

  As shown in FIGS. 3 and 8, the hinge bearing body 4111 is provided on the inner surface of the tip frame 411 b of the frame body 411. The hinge bearing body 4111 includes an upright piece 4111a that is in contact with the inward surface of the front end frame 411b, a pair of opposed pieces 4111b that extend forward from both side ends of the upright piece 4111a, and face each other, and forward from the lower end of the upright piece 4111a. And a horizontal piece 4111c that extends. Each of the opposing pieces 4111b is formed with a hinge shaft second insertion hole 4111d into which the hinge shaft H1 can be inserted (corresponding to the “top plate side holding hole” of the present invention). Each hinge shaft second insertion hole 4111d can hold the hinge shaft H1 in a playful state. In the present embodiment, a long hole extending in the height direction is applied as the hinge shaft second insertion hole 4111d. Further, each of the integrated opposing pieces 4111b is positioned at the rear side (on the side opposite to the base 2, in other words, on the side of the front end frame 411b) from the connection portion between the opposing frame 411a and the connection frame 411c of the frame body 411. The longitudinal dimension is set so that As a result, the hinge shaft second insertion hole 4111d formed in each of the opposing pieces 4111b is also positioned behind the connection portion between the opposing frame 411a and the connection frame 411c. As a result, the hinge shaft H1 pivotally supported by the hinge shaft second insertion hole 4111d has the priority support portion 412 (the opposed frame 411a and the connection frame provided on the most anti-base 2 side among the plurality of priority support portions 412). 411c is positioned further to the rear (on the side opposite to the base 2) than the priority support portion 412 provided at the connection site with 411c (see FIG. 8, where the priority support portion 412 is provided with a pattern).

  The hinge shaft H1 is inserted into each of the holes 5222c and 4111d in a state where the hinge shaft first insertion hole 5222c of the hinge shaft support 5222 and the hinge shaft second insertion hole 4111d of the hinge bearing body 4111 are in communication with each other. By doing so, the top plate 5 and the support body 4 are connected via the hinge mechanism H. In this connected state, the hinge mechanism H, particularly the hinge shaft H1, is positioned at a position deviated from the support region by the priority support portion 412. The hinge shaft H1 is prevented from coming off by a large-diameter head, a fastener such as an E-ring, or caulking.

  Next, the method of using the desk 1 will be described, particularly focusing on the operation and action when the top plate 5 is slid along the base 2 together with the support 4 or the sliding movement is restricted.

  First, when the switching mechanism 4E of each switching unit 422 is switched from the movement restricted state (see FIGS. 4 to 7) to the movement permitted state (see FIGS. 9 to 12), the knob 4241a of the slide operation lever 4241 is gripped. Then, an operation of rotating the slide operation lever 4241 around the slide operation lever shaft 4242 in the direction of arrow A in FIGS. As the slide operation lever 4241 rotates, the link interlocking body 4231 pressed against the cam surface 4241b of the slide operation lever 4241 moves from the reinforcing body 4212 toward the main body portion 4211 (FIGS. 11 and 12). reference). Then, the links 4G1 and 4G2 of the switching units 422 in which the base end portions 4G1b and 4G2b are connected to the link interlocking body 4231 are interlocked and rotated around the link shaft 4232, respectively. In each switching unit 422, the upper link 4G1 and the lower link 4G2 facing each other in the height direction rotate about a common link shaft 4232, so that the upper link 4G1 is connected via the upper roller support 4Ca. The upper rolling element 4C provided at the distal end 4G1a moves toward the opening-side standing wall 21a of the upper rail groove 21, and the adjustment link 4G21 and the lower roller support 4Da are attached to the distal end 4G2a of the lower link 4G2. The lower rolling element 4 </ b> D provided therethrough moves toward the rear standing wall 22 b of the lower rail groove 22. As a result, as shown in FIG. 10, the switching mechanism 4E of each switching unit 422 releases the contact state of the upper contact body 4A with respect to the opening side standing wall 21a of the upper rail groove 21 and moves the upper rolling element. 4C is brought into contact with the opening-side standing wall 21a of the upper rail groove 21, and the lower-side rolling element 4D is released by releasing the contact state of the lower-side contact body 4B with the rear-side standing wall 22b of the lower rail groove 22 Is allowed to move in contact with the rear standing wall 22b of the lower rail groove 22. 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 auxiliary rolling element 4H that can be brought into contact with the bottom wall 21c of the upper rail groove 21 is provided in the main body portion 4211 of the slide device 42 (see FIGS. 5 and 10).

  In this embodiment, since the rolling elements 4C and 4D are relatively moved with respect to the contact bodies 4A and 4B in accordance with the above operation, the switching mechanism 4E is changed from the movement restricted state to the movement permitted state. In the case of switching, the relative angle of the support 4 with respect to the base 2 is displaced, resulting in an angular posture in which the anti-base 2 side of the support 4 jumps up (see FIGS. 9 and 10). According to such a change in the angle of the support 4 with respect to the base 2, the top plate 5 connected to the support 4 by the hinge mechanism H and having the other end supported by the leg 6 is shown in FIGS. As shown in FIG. 9, it rotates about the hinge axis H <b> 1 and rotates in the direction of lifting with respect to the support 4. Thus, since the relative angle of the top plate 5 with respect to the support body 4 is set to be changeable using the hinge mechanism H, when the slide device 42 is switched from the movement restricted state to the movement permitted state by the switching mechanism 4E. Only the operation force that changes the angle of the support body 4 with respect to the base 2 is required, and compared with the mode that requires the operation force to flip the top plate together with the support body integrally and simultaneously (change the angle) with respect to the base. Thus, the switching operation can be performed with a remarkably light operating force. Further, when the switching mechanism 4E is switched from the movement restricted state to the movement permitted state, a priority support portion closest to the hinge axis H1 among the plurality of priority support portions 412 is obtained with a change in the relative angle between the support body 4 and the top plate 5. Only a part of 412 hits the lower surface of the movable top plate main body 511, and the contact state between the other priority support portions 412 and the top plate 5 is released.

  On the other hand, the operation of switching the switching mechanism 4E of each switching unit 422 from the movement-permitted state to the movement-restricted state grips the knob 4241a of the slide operation lever 4241 exposed from the reinforcing body 4212 and moves the slide operation lever shaft 4242. The operation is performed by rotating the slide operation lever 4241 in the center in the direction of arrow B in FIGS. As the slide operation lever 4241 rotates, the link interlocking body 4231 moves toward the reinforcing body 4212, and the links 4G1 and 4G2 of the switching units 422 are interlocked to rotate around the link shaft 4232, respectively. To do. The upper side link 4G1 and the lower side link 4G2 rotate around the common link shaft 4232 in the opposite direction to the case where the switching mechanism 4E is switched from the movement restricted state to the movement permitted state. The upper rolling element 4C provided at the distal end 4G1a moves in a direction away from the opening side standing wall 21a of the upper rail groove 21, and the lower rolling element 4D provided at the distal end 4G2a of the lower link 4G2. Moves in a direction away from the rear side standing wall 22b of the lower rail groove 22. As a result, the support body 4 moves in the direction of sinking due to the weight of the support body 4 itself and the weight of the top plate 5, and the switching mechanism 4E of each switching unit 422, as shown in FIG. The upper rolling element 4C is released from the contact state with the opening side standing wall 21a to bring the upper contact body 4A into contact or pressure contact with the opening side standing wall 21a of the upper rail groove 21, and the lower rail groove. A movement restriction state in which the contact state of the lower rolling body 4D with respect to the rear side standing wall 22b of 22 is released and the lower side contact body 4B is brought into contact with or pressed against the rear side standing wall 22b of the lower rail groove 22; Become. The auxiliary rolling element 4H is also lifted from the bottom wall 21c of the upper rail groove 21. Thereby, the sliding movement of the support body 4 with respect to the base 2 and by extension, the top plate 5 is regulated.

  In the present embodiment, when the switching mechanism 4E is switched from the movement-permitted state to the movement-restricted state, the top plate 5 moves around the hinge axis H1 of the hinge mechanism H according to the relative angle change of the support body 4 with respect to the base 2. It turns toward the support body 4 and is in a state of being supported by the priority support portions 412.

  In the present embodiment, the side lock lever 4I is provided in the slide device 42 in order to complement the slide movement / regulation function of the switching mechanism 4E. The side lock lever 4I is rotatable about the side lock lever shaft 4Ia, and a state in which the pressing surface 4Ib provided at the base end is pressed against or abutted against the rising surface 2A of the base 2, and It can be switched between the pressure contact state or the state in which the contact state is released. In addition, the rotation of the slide operation lever 4241 at the time of the switching operation is restricted by a part of the slide operation lever 4241 coming into contact with the contact portion 4243a of the slide operation lever abutting plate 4243.

  Further, the desk 1 according to the present embodiment is such that the top plate 5 can be horizontally swiveled with respect to the support body 4 by the action of the turning mechanism 52 as described above. Horizontal swiveling of the top plate 5 is restricted by gripping the swivel stopper rail 5122 which is a “pushing target portion” of the present invention integrally provided on the bottom surface (corresponding to “the bottom surface of the top plate” of the present invention). A swivel mechanism 4J that can be switched between a turning restriction state to be turned and a turning permission state in which the top plate 5 is allowed to turn horizontally by releasing the swallowing state (see FIGS. 4 and 8).

  Here, the turning stopper rail 5122 which plays a role as the “pinch target portion” of the present invention will be described in detail.

  The turning stopper rail 5122 is a plan view showing the relationship between the turning stopper rail 5122 and the top plate receiving portion main body 5121 in FIG. 13 (the imaginary line indicates the turning plate 5a of the top plate receiving portion main body 5121 and the top plate 5). As shown in FIG. 2, the top plate 5 has a substantially circular shape in plan view having a central angle that is the same as or slightly larger than the turning angle at which the top plate 5 can be turned horizontally. . In the present embodiment, since the top plate 5 is capable of turning 180 degrees, a substantially semi-ring shape having a central angle slightly larger than 180 degrees or 180 degrees is applied as the turning stopper rail 5122. This turning stopper rail 5122 is a cross-sectional view including an upright portion 5122a that is substantially orthogonal to the surface direction of the top plate 5 and a horizontal portion 5122b that extends in the horizontal direction from the lower edge of the upright portion 5122a. It is substantially L-shaped. In this embodiment, the standing part 5122a and the horizontal part 5122b are integrally formed. The turning stopper rail 5122 is positioned on the lower surface portion in the front half region of the top plate receiving portion main body 5121, and the turning stopper rail 5122 and the top plate receiving main body 5121 are screwed to the lower surface side of the movable top plate main body 511. It is attached integrally. Further, the height dimension of the turning stopper rail 5122 is set larger than the height dimension of the turntable 521.

  On the other hand, as shown in FIGS. 8 and 14 to 16, the pinching mechanism 4 </ b> J has a pinchable position (A) where the swivel stopper rail 5122 (more specifically, the horizontal portion 5122 b) can be pinched, The retractable body 4J1 that can rotate around the horizontal axis between the retracted position (B) that has released the retracted state, and the retractable position 4A1 between the retractable position (A) and the retractable position (B). And an operation unit 4J2 for applying an operation force to be switched between.

  The retractable body 4J1 includes a retractable body main body 4J11 extending horizontally and a pair of hanging pieces 4J12 that are suspended from both ends of the retractable body main body 4J11. In the present embodiment, the retractable body 4J1 is formed from a material having high rigidity such as metal, and the retractable body 4J11 and the pair of hanging pieces 4J12 are integrally provided. At the front end of the retractable body 4J11, a catching claw 4J11a that can directly abut against the turning stopper rail 5122 is provided. The nail claw 4J11a is provided with a radius corresponding to the radius of the turning stopper rail 5122. The nail claw 4J11a is set so that the height dimension gradually decreases toward the tip. Of the retractable body 4J11, the nail claw 4J11a protrudes forward (base 2 side) from each hanging piece 4J12. Each hanging piece 4J12 includes a first insertion hole 4J12a for a retractable body rotating shaft into which the rotational shaft 4JX of the retractable body 4J1 can be inserted, a retractable position (A) and a retracted release position (B) of the retractable body 4J1. And a first guide hole 4J12b that defines a movement locus between the first guide hole 4J12b and the first guide hole 4J12b. In the present embodiment, the first insertion hole 4J12a for the retractable body rotating shaft is formed at a position displaced from the center of gravity of the retractable body 4J1. The first guide hole 4J12b is a long hole extending along a direction inclined by a predetermined angle with respect to the retractable body 4J11.

  The operation portion 4J2 has a substantially lever shape, a knob portion 4J21 is provided at the distal end portion, a cam surface 4J22 having a linear portion and a curved portion at the proximal end portion, and an operation portion rotation in which the rotation shaft 4JY of the operation portion 4J2 can be inserted. The shaft first insertion hole 4J23 is formed. The width dimension of the operation part 4J2 is set smaller than the separation dimension between the outward faces of the hanging pieces 4J12 of the retractable body 4J1.

  In the present embodiment, the pinching mechanism 4J is provided in association with the reinforcing frame 411d of the frame body 411 of the support body 4. Therefore, the pinching mechanism 4J includes an operation unit support 4J3 that fixes one end to the reinforcement frame 411d and supports the operation unit 4J2, and an operation unit abutment plate 4J4 provided between the reinforcement frame 411d and the operation unit 4J2. It has.

  The operation unit support 4J3 includes a pair of upright pieces 4J31 whose distal ends are fixed to the reinforcing frame 411d by welding or the like, and connection pieces 4J32 that connect the upper ends of the base end portions of the upright pieces 4J31. . In the present embodiment, the upright pieces 4J31 and the connecting pieces 4J32 are formed by bending a single steel plate. A retractable body rotating shaft second insertion hole 4J31a that communicates with a retractable body rotating shaft first insertion hole 4J12a formed in the hanging piece 4J12 of the retractable body 4J1 is formed on the distal end side of each standing piece 4J31. A second guide hole 4J31b that defines a movement trajectory of the operation portion 4J2 when an operation force is applied to the operation portion 4J2 is formed at a substantially central portion in the longitudinal direction of each standing piece 4J31. In the present embodiment, a long hole extending along the longitudinal direction of each upright piece 4J31 is applied as the second guide hole 4J31b. In addition, the separation dimension between the inward surfaces of the upright pieces 4J31 is set larger than the separation dimension between the outward surfaces of the hanging pieces 4J12 of the retractable body 4J1.

  The operation portion abutting plate 4J4 has a substantially U-shape in cross-section, including an upright piece 4J41, and an upper piece 4J42 and a lower piece 4J43 extending forward from the upper and lower edges of the upright piece 4J41. In the present embodiment, the upright pieces 4J41, the upper pieces 4J42, and the lower pieces 4J43 are formed by bending a single steel plate. Then, the upper piece 4J42 protruding forward from the lower piece 4J43 is fixed to the upper surface portion of the auxiliary frame 411d by welding or the like, and the front end portion of the lower piece 4J43 is fixed to the rear surface portion of the auxiliary frame 411d by welding or the like. ing. The standing piece 4J41 is formed with a pair of rotation stopper pin insertion holes 4J41a into which a pair of rotation stopper pins 4JP can be inserted. The reinforcing frame 411d is formed with a rotation stopper pin hole 411da capable of accommodating the rotation stopper pin 4JP, and a rotation stopper pin accommodation space 4J2s capable of accommodating the rotation stopper pin 4JP is formed at the base end of the operation portion 4J2. (See FIG. 14).

  Then, the rotation stopper pin 4JP is continuously inserted into the rotation stopper receiving hole 411da of the reinforcing frame 411d and the rotation stopper pin insertion hole 4J41a of the operation portion abutting plate 4J4, and the tip portion of each rotation stopper pin 4JP is inserted into the operation portion. It is positioned in the 4J2 rotation stopper pin accommodating space 4J2s. In this state, the second guide hole 4J31b of the operation portion support 4J3, the first guide hole 4J12b of the retractable body 4J1, the first insertion hole 4J23 for the operation portion rotation shaft of the operation portion 4J2, and the distal end portion of the rotation stopper pin 4JP. The formed second insertion hole 4JPa for operation unit rotation shaft is communicated with each other, and the rotation shaft 4JY of the operation unit 4J2 is continuously inserted into each of the holes 4J31a, 4J12b, 4J23, 4JPa. On the other hand, the second insertion hole 4J31a for the retractable body rotating shaft of the operating portion support body 4J3 and the first insertion hole 4J12a for the retractable body rotating shaft of the retractable body 4J1 are connected to each other, and the retractable body 4J1 is inserted into each of the holes 4J31a, 4J12a. The rotation shaft 4JX is continuously inserted. As described above, the squeezing mechanism 4J formed by associating the reinforcing frame 411d, the retractable body 4J1, the operation portion 4J2, the operation portion support body 4J3, and the operation portion abutment plate 4J4 is integrally assembled to the support body 4. The reinforcement frame 411d is set at an attachment position so as to substantially coincide with a virtual straight line connecting the pair of priority support portions 412 provided on the base 2 side among the plurality of priority support portions 412 provided on the support body 4. The swaging mechanism 4J provided in the reinforcing frame 411d is positioned in the support area of the priority support portion 412 or in the vicinity of the support area (see FIGS. 17 and 18 described later). The rotary shafts 4JX and 4JY are prevented from coming off by large-diameter heads, fasteners such as E-rings, or caulking.

  Next, an operation method and operation of the scavenging mechanism 4J will be described.

  When the retractable body 4J1 is positioned at the retractable position (A), the horizontal rotation of the top plate 5 is regulated by gripping the horizontal portion 5122b of the swing stopper rail 5122 by the gripping claws 4J11a of the retractable body 4J1. (See FIG. 8). In this case, the operation portion 4J2 makes the linear portion of the cam surface 4J22 contact or pressure contact with the operation portion abutment plate 4J4, and has a substantially horizontal posture as a whole, and its maximum height dimension is the maximum height dimension of the frame body 411. Smaller. Further, the rotation shaft 4JY of the operation portion 4J2 is positioned at the lower edge of the first guide hole 4J12b formed in the retractable body 4J1, and the rear edge of the second guide hole 4J31b formed in the operation portion support body 4J3 (anti-base 2). Position). When the rotation shaft 4JY of the operation portion 4J2 is locked in a state where it is positioned at the lower edge of the first guide hole 4J12b, the rotation of the retractable body 4J1 around the rotational shaft 4JX is restricted, and the retractable body 4J1 is It is locked at the retractable position (A). Further, when the swaging mechanism 4J is in the turning restricted state, the lower surface of the movable top plate main body 511 is supported at a plurality of points by the respective priority support portions 412.

  On the other hand, the swaging mechanism 4J is switched from the turning restricted state to the turning allowed state by gripping the knob 4J21 of the operation unit 4J2 and applying an operation force that rotates the operation unit 4J2 downward. Based on this operation force, the operation unit 4J2 rotates downward about the rotation shaft 4JY. Then, the object that abuts or presses against the operation unit abutment plate 4J4 at the next point after the operation unit 4J2 is rotated by a predetermined angle is switched from the straight part of the cam surface 4J22 of the operation unit 4J2 to the curved part, and the rotation shaft 4JY of the operation unit 4J2 is changed. It moves forward (base 2 side) along the second guide hole 4J31b. Along with the movement of the rotating shaft 4JY, the retractable body 4J1 rotates rearward (on the side opposite to the base 2) around the rotating shaft 4JX, and the nail claw 4J11a is separated from the horizontal portion 5122b of the turning stopper rail 5122. It moves to the nudge release position (B) that has been made (see FIG. 15). The rotation trajectory between the retractable position (A) and the retracting position (B) of the retractable body 4J1 is defined by the first guide hole 4J12b. That is, when the retractable body 4J1 moves between the retractable position (A) and the retractable release position (B), the height position of the rotary shaft 4JY of the operation unit 4J2 is unchanged, and the retractable body 4J1 When positioned at the retractable position (A), the rotation shaft 4JY of the operation portion 4J2 is positioned at the lower edge of the first guide hole 4J12b, and the retractable body 4J1 is positioned at the retracting position (B). The rotation shaft 4JY of the operation unit 4J2 is positioned at the upper edge of the first guide hole 4J12b. Further, when the retractable body 4J1 is moved from the retractable position (A) to the retractable position (B), a part of the hanging piece 4J12 of the retractable body 4J1 comes into contact with the reinforcing frame 411d so that the retractable body 4J1. Is further restricted in the same direction. Since the rotary shaft 4JX is provided at a position displaced from the center of gravity of the retractable body 4J1, the movement of the retractable body 4J1 from the retractable position (A) to the retracting position (B) is caused by the weight of the retractable body 4J1. Can be used. By moving the retractable body 4J1 from the retractable position (A) to the retracting position (B) in this way, the retracting mechanism 4J causes the retraction of the turning stopper rail 5122 by the retractable body 4J1 and the reinforcing frame 411d. Is in a turning-permitted state where the top plate 5 is allowed to turn horizontally, and as shown in FIGS. 17 and 18, a posture in which the longitudinal direction of the top plate 5 is substantially orthogonal to the longitudinal direction of the base 2, Alternatively, the turning angle posture of the top plate 5 with respect to the base 2 such as a posture in which the longitudinal direction of the top plate 5 is substantially parallel to the longitudinal direction of the base 2 can be appropriately selected. In FIGS. 17 and 18, the retracting mechanism 4J in which the retractable body 4J1 is in the retractable position (A) is shown, and a part of the retracting mechanism 4J is omitted.

  Then, when the swaging mechanism 4J is in a turning-permitted state, the top plate 5 is in a state of being able to rotate in the direction of lifting with respect to the support body 4 around the hinge axis H1 of the hinge mechanism H as shown in FIG. .

  Thus, by moving the retractable body 4J1 from the retractable position (A) to the retracting position (B), the retracting mechanism 4J releases the swung stopper rail 5122 from the retracted state by the retractable body 4J1. , A turning permission state in which the top plate 5 is allowed to turn horizontally, as shown in FIGS. 17 and 18, a posture in which the longitudinal direction of the top plate 5 is substantially orthogonal to the longitudinal direction of the base 2, or the top plate 5 A turning angle posture of the top plate 5 with respect to the base 2 such as a posture in which the longitudinal direction is substantially parallel to the longitudinal direction of the base 2 can be appropriately selected. In FIGS. 17 and 18, the retracting mechanism 4J in which the retractable body 4J1 is in the retractable position (A) is shown, and a part of the retracting mechanism 4J is omitted.

  On the other hand, the operation of switching the swaging mechanism 4J from the turning permission state to the turning restriction state is performed by applying an operation force that returns the operation unit 4J2 to the original position. In addition, before performing the operation which switches the swaging mechanism 4J from a turning permission state to a turning control state, it is necessary to return the top plate 5 to the normal use position shown in FIG. Then, when the knob 4J21 of the operation unit 4J2 is gripped and an operation force for rotating the operation unit 4J2 upward is applied, the operation unit 4J2 rotates upward about the rotation shaft 4JY. Then, when the operation unit 4J2 is rotated by a predetermined angle, the object to be in contact with or pressed against the operation unit abutment plate 4J4 is switched from the curved portion of the cam surface 4J22 of the operation unit 4J2 to the linear portion, and the rotation shaft 4JY of the operation unit 4J2 2 Moves backward (on the side opposite to the base 2) along the guide hole 4J31b. As the rotary shaft 4JY moves, the retractable body 4J1 rotates toward the front (base 2 side) around the rotary shaft 4JX and grips the horizontal portion 5122b of the turning stopper rail 5122. Positioned at (A). In this way, by moving the retractable body 4J1 from the retracting position (B) to the retractable position (A), the horizontal portion 5122b of the turning stopper rail 5122 is pulled downward (reinforcing frame 411d side), and the top plate 5 horizontal turning is restricted. In this way, the retracting body 4J1 of the switching mechanism 4J pushes the horizontal portion 5122b of the turning stopper rail 5122 downward along with the operation of switching the swaging mechanism 4J from the turning permission state to the turning restriction state, thereby turning the turning stopper rail 5122. At the same time, the movable top plate main body 511 is drawn downward, and the lower surface of the movable top plate main body 511 is in pressure contact with the priority support portion 412, and a good support state of the top plate 5 is ensured. In addition, the rotation locus between the retractable position (A) and the retracting position (B) of the retractable body 4J1 is defined by the first guide hole 4J12b as described above. Further, when the operation of moving the retractable body 4J1 from the insertion release position (B) to the insertion-possible position (A) is performed, a part of the operation unit 4J2 comes into contact with the connection piece 4J32 of the operation unit support 4J3. This restricts further rotation of the operation portion 4J2 in the same direction.

  By switching the swaging mechanism 4J between the swiveling restricted state and the swiveling permitted state by the operation as described above, it is possible to control the permission / restriction of the turning motion of the top plate 5, and this swaging mechanism 4J Further, it is possible to control the allowance / restriction of the rotation of the top plate 5 in the flying direction using the hinge mechanism H.

  That is, when the swaging mechanism 4J is in the turning restricted state, as shown in FIG. 8, the turning mechanism 5 is restricted from turning in the flying direction of the top plate 5 using the hinge mechanism H. As shown in FIG. 16, the insertion mechanism 4 </ b> J is in a rotation-permitted state in which the top plate 5 using the hinge mechanism H is allowed to rotate in the flying direction. That is, the swaging mechanism also functions as the “top plate floating restriction mechanism” of the present invention.

  Further, as shown in FIGS. 17 and 18, the hinge mechanism H according to the present embodiment has a posture in which the longitudinal direction of the top plate 5 is substantially orthogonal to the longitudinal direction of the base 2 or the longitudinal direction of the top plate 5. Non-direction that allows the top plate 5 to rotate in the flying direction regardless of the turning angle posture of the top plate 5 with respect to the support 4 and the base 2, such as a posture substantially parallel to the longitudinal direction of the base 2. Sexual rotation permission means. In this embodiment, the rotation permitting means is realized by making the hinge shaft second insertion hole 4111d formed in the hinge bearing body 4111 into a long hole.

  That is, as shown in FIG. 17, when the top plate 5 is set to a turning angle whose longitudinal direction is substantially orthogonal to the longitudinal direction of the base 2, the longitudinal direction of the top plate 5 and the hinge shaft H1 As shown in FIG. 19, the hinge shaft H1 rotates in the hinge shaft second insertion hole 4111d without substantially changing its height position, and moves in the direction in which the top plate 5 floats. Is allowed to rotate.

  On the other hand, as shown in FIG. 18, when the top plate 5 has a longitudinal direction set at a turning angle substantially parallel to the longitudinal direction of the base 2, the longitudinal direction of the top plate 5 and the axis of the hinge shaft H1. As shown in FIG. 20, the hinge shaft H1 is lifted up in the second insertion hole 4111d for the hinge shaft as the top plate 5 rotates in the floating direction. Tilt (fly) according to the angle (rotation angle). Thereby, the smooth rotation to the floating direction of the top plate 5 is ensured. In FIG. 19 and FIG. 20, the pinching mechanism 4J and the turning stopper mechanism 4K are omitted. Further, in FIG. 18, the swivel mechanism 4J is in the turning restricted state (turning restricted state), and thus the rotation of the top plate 5 in the flying direction is restricted. In FIG. 20 that is partially omitted, for convenience of explanation, a state in which the top 5 is rotated in the flying direction is shown.

  As described above, the desk 1 according to the present embodiment connects the support 4 and the top plate 5 via the hinge mechanism H, and the top plate 5 is lifted with respect to the support 4 using the hinge mechanism H. When the relative position of the top plate 5 with respect to the base 2 is changed (the top plate 5 is moved in parallel), the top plate is changed along with the relative angle change of the support 4 with respect to the base 2. By rotating 5 in the direction of lifting from the support 4 via the hinge mechanism H, the load on the top 5 received by the support 4 through the rotation around the hinge axis can be released, and the switching operation of the support 4 is performed. Can be performed with a light operating force, and it is possible to easily change the relative position of the top plate 5 with respect to the base 2 with a light operating force, resulting in excellent operability and practicality.

  Furthermore, since the hinge mechanism H is provided with non-directional rotation allowing means for allowing the top plate 5 to rotate in the flying direction regardless of the rotation angle of the top plate 5, the top plate 5 can be rotated in any way. Even if it is an angle, the relative position of the top plate 5 with respect to the base 2 can be easily changed with a light operating force.

  In particular, the hinge mechanism H forms a single hinge shaft H1 and a first insertion shaft 5222b for the hinge shaft that is formed on a part of the top plate 5 and rotatably supports the hinge shaft H1 without play. A hinge shaft support body 4122 formed on a part of the support body 4 and a hinge bearing body 4111 formed with a second insertion hole 4111d for a hinge shaft that rotatably supports the hinge shaft H1 in a playable state. When the non-directional rotation allowing means rotates the top plate 5 in the floating direction, the hinge shaft H1 is moved in the hinge shaft second insertion hole 4111d according to the turning angle of the top plate 5. By rotating or tilting, the top plate 5 allows the top plate 5 to rotate in the flying direction regardless of the turning angle. Can be realized.

  Further, the support body 4 includes a priority support portion 412 that comes into contact with the lower surface of the movable top plate body 511 with priority over other parts in the movement restricted state, and the hinge mechanism H is supported by the priority support portion 412. Since it is positioned at a position that is out of the region, a favorable support state is ensured by the priority support portion 412 and the top plate 5 is lifted when the top plate 5 is rotated in the floating direction with respect to the support 4. On the other hand, the brake by the priority support portion 412 is not applied, and the top plate 5 can be lifted smoothly, which contributes to further improvement in operability.

  In addition, the support 4 can be switched between a rotation restricting state in which the rotation of the top plate 5 in the floating direction and a rotation allowable state in which the rotation of the top plate 5 in the floating direction is permitted. In order to prevent the top plate 5 from being lifted unexpectedly and to move the top plate 5 in parallel with the base 2, the top plate lift control mechanism is turned on. By making the rotation restricted state from the movement restricted state, the parallel movement can be performed easily and smoothly.

  In particular, in this embodiment, since the swaging mechanism 4J that can regulate the horizontal turning of the top plate 5 functions as a top plate floating restriction mechanism, there is no need to provide a separate dedicated top plate turning restriction mechanism. The mechanism can be shared and the structure can be simplified.

  Further, the pinching mechanism 4J functioning as a top plate floating restriction mechanism pulls the turning stopper rail 5122 downward when switching from the turning permission state (turning permission state) to the turning restriction state (turning restriction state). Since the lower surface of the movable top plate main body 511 is brought into contact with or pressed against the priority support portion 512 in accordance with the retracting operation of the swaging mechanism 4J, the swiveling mechanism 4J is allowed to rotate (rotation permitted state). ) To the turning restricted state (turning restricted state), the braking performance against turning of the top plate 5 is effectively exhibited, and the whole top plate 5 is drawn downward together with the turning stopper rail 5122 to move the movable top plate main body 511. The support 4 can receive the load applied to the top plate 5 via the priority support portion 412 through the priority support portion 412. It is possible to realize the state. In addition, as shown in FIGS. 17 and 18, the priority support portion 412 supports the top plate 5 in contact with the lower surface of the top plate 5 regardless of the turning angle. The situation where the support state of 5 deteriorates does not occur, and the utility is excellent.

  In this way, the swaging mechanism 4J that functions as the top plate floating restriction mechanism switches from the turning permission state (turning permission state) to the turning restriction state (turning restriction state), thereby moving the top plate 5 in the floating direction. It is possible to realize the rotation restriction, the turning restriction of the top plate 5 and the improvement of the support state of the top plate 5 at a time.

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

  For example, in the above-described embodiment, a mode in which the hinge mechanism is applied as the lifting operation permission mechanism (rotation permission mechanism) is illustrated. However, the present invention is not limited to this, and only operations other than rotation such as pin tilting or swinging are used. In this case, the top plate may be allowed to rotate in the direction in which the top plate is lifted. Moreover, you may set the axial center direction of a pin in the direction substantially orthogonal to the extending | stretching direction of a base.

  The support body only needs to be able to move in parallel with the base, and is not a slide movement using the rolling elements exemplified in the above embodiment, but a sliding contact member provided on the support body is a guide portion (rail groove or the like) of the base. It is also possible to move in a state where it is in sliding contact.

  Moreover, in the said embodiment, although the aspect which changes the relative angle with respect to a base by jumping up with respect to a base with the switch from a movement control state to the said movement permission state was illustrated as a support body, not only this, There may be a support body that does not perform any jumping operation with respect to the base in parallel translation with respect to the base, and the relative angle with respect to the base is unchanged. Even when such a support is applied, when the parallel movement is performed with respect to the top base, when the operating force for lifting the top is applied to the support, the top is attached to the support. By rotating in the lifting direction, it is possible to release the load of the top plate received by the support body through the operation of the top plate, and the relative position change (parallel movement) of the top plate with respect to the base can be performed with a light operating force. .

  Moreover, you may apply as a top plate the thing which cannot rotately move with respect to a support body. Furthermore, in the case where a part of the top plate is supported by the leg, a leg that is not provided with a moving body at the lower end may be applied. In this case, in order to translate or horizontally turn the top plate, the top plate may be lifted up to a position where the lower end of the leg floats from the floor surface. In addition, as a top plate, the shape in plan view is circular, oval, polygonal, L-shaped, T-shaped, rectangular (including square), or one end side is polygonal and the other end side is partial Various shapes such as an arc shape may be applied.

  The support-side shaft hole that is formed on a part of the support and can support the hinge shaft in a playable state can move the hinge shaft within the hole according to the rotation angle of the top plate. Any shape other than the long hole may be used.

  In addition, as a top plate floating restriction mechanism (push-in mechanism), a single pull-in body (for example, a substantially U-shaped one) that can be inserted into the target object is used. A movable body that forms a pair capable of moving relative to the support, or a mode in which the object to be swallowed is pulled in by being moved forward and backward, and the object to be swallowed is pulled downward in the swallowed state. In this case, a sandwiching symmetrical part may be inserted between these movable bodies, and the sandwiching target part may be drawn downward.

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

  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.

  Moreover, you may provide a several top plate floating regulation mechanism in a single support part.

  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 disassembled perspective view of the top plate which concerns on the same embodiment. The exploded perspective view of the support body concerning the embodiment. The schematic side view which fractures | ruptures and shows partially the desk in which the switching mechanism is a movement control state in the embodiment. The principal part expansion side view of the desk in which the switching mechanism is in a movement control state in the embodiment. The principal part enlarged plan view of the support body in which the switching mechanism is in a movement control state in the embodiment. The principal part expanded bottom view of the support body in which the switching mechanism is in a movement control state in the embodiment. The enlarged view of the fracture | rupture area | region in FIG. FIG. 3 is a schematic side view showing the desk in which the switching mechanism is in a movement-permitted state with a part thereof broken in the embodiment. The principal part enlarged side view of the desk in which the switching mechanism is in a movement permissible state in the embodiment. The principal part enlarged plan view of the support body in which the switching mechanism is in a movement allowable state in the same embodiment. The principal part enlarged bottom view of the support body in which the switching mechanism is in a movement permissible state in the same embodiment. The top view of the rotation stopper rail in the embodiment. The disassembled perspective view of the pinching mechanism which concerns on the same embodiment. Action explanatory drawing. The enlarged view of the fracture | rupture area | region in FIG. The top view which abbreviate | omits and partially shows the desk which concerns on the same embodiment. The top view which abbreviate | omits and shows the desk which concerns on the same embodiment which changed the turning angle of the top plate. The figure which abbreviate | omits and partially shows the xx sectional view in FIG. The figure which abbreviate | omits and partially shows the yy sectional view in FIG.

Explanation of symbols

1 ... Furniture with a top board (desk)
2 ... Base 4 ... Support 4111 ... Top plate side holding part (hinge bearing)
4111d ... support side shaft hole (second insertion hole for hinge shaft)
412 ... Priority support part 4J ... Pinch mechanism (top plate lift regulation mechanism)
5 ... Top plate 5122 ... Pinching target part (turning stopper rail)
5222 ... Supporting body side holding portion (hinge shaft support)
5222b: Top plate side shaft hole (first insertion hole for hinge shaft)
6 ... Leg H ... Lifting motion allowance mechanism (hinge mechanism)
H1 ... pin (hinge shaft)

Claims (9)

A base that extends in a predetermined direction, a support that is supported so as to be movable in parallel along the extending direction of the base, and a top plate that has one end supported by the support and the other end supported by a leg. Furniture with a top board,
A furniture with a top plate, characterized in that the support and the top plate are connected via a lifting operation permitting mechanism that allows relative movement of the top plate in the lifting direction with respect to the support. The lifting operation permission mechanism includes a pin, a top plate side holding portion formed on a part of the top plate and capable of holding the pin, and a support side formed on a part of the support and capable of holding the pin. Relative to the support in the direction in which the top plate is lifted by rotating, tilting or swinging in a state where the pin is held by the top plate side holding portion and the support side holding portion. The furniture with a top plate according to claim 1, wherein the furniture is allowed to move. The top plate is pivotable relative to the support;
The ceiling according to claim 1 or 2, wherein the lifting operation permission mechanism is provided with non-directional movement permission means for allowing relative movement in the lifting direction of the top plate regardless of the turning angle of the top plate. Furniture with boards. The top plate side holding portion has a top plate side holding hole capable of holding the pin in a substantially unplayed state, and the support side holding portion can hold the pin in a playable state. With holes,
When the non-directional movement allowing means rotates the top plate in the floating direction, by rotating or tilting the pin in the support-side holding hole according to the turning angle of the top plate, The furniture with a top plate according to claim 3, wherein the top plate allows the top plate to move in the floating direction at any turning angle. The furniture with a top plate according to claim 4, wherein the support side holding hole is a long hole. The support is provided with a priority support portion that can contact the lower surface of the top plate with priority over other parts in a state where movement of the top plate in the lifting direction is restricted,
The furniture with a top plate according to claim 1, 2, 3, 4, or 5, wherein the lifting operation permission mechanism is positioned at a position deviated from a support region by the priority support portion. The support body changes a relative angle with respect to the base by jumping up with respect to the base in accordance with switching from a movement restriction state in which movement with respect to the base is restricted to a movement permission state in which movement with respect to the base is permitted. Yes,
Floating allowable operating mechanism, the support according to claim 2, 3, 4, 5 or 6, wherein the relative movement is to allow for the direction in which floating of the top plate relative to the support with the relative angle changes Furniture with a top plate. The top plate is switchable between a rotation restricting state in which the support body restricts rotation in the direction in which the top plate is lifted and a rotation permission state in which rotation is allowed in the direction in which the top plate is lifted. The furniture with a top plate according to claim 1, 2, 3, 4, 5, 6 or 7, which is provided with a floating regulation mechanism. The top plate floating regulation mechanism regulates the rotation of the top plate in the floating direction by being in a swallowing state in which a swallowing target portion provided integrally or integrally with the bottom surface side of the top plate is gripped. The furniture with a top plate according to claim 8, wherein the top plate is allowed to rotate in a floating direction by releasing the pinching state.

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