JP4977873B2 - Optional mounting device - Google Patents

Description

  The present invention relates to an option attachment device for attaching an option member to a base.

  2. Description of the Related Art Conventionally, in an office, various option attachment devices for attaching an optional member such as a desktop panel or a task light to an opening including a rail groove provided on a base to which a top plate or the like is attached have been proposed.

Such a device is preferably fixed to an opening such as a rail groove, and preferably supports the load of the option member itself so that the option member can be suitably positioned in the rail groove or the like. (For example, refer to Patent Document 1).
JP 2005-102737 A

  In addition, the current office configuration system makes it easy to lay out the office by adopting a structure that can easily change the layout of the desk or the top panel according to the situation where the work position and work space of the office worker can change frequently. Various structures have been introduced to provide changes.

  However, even if the arrangement of the top plate can be easily changed to change the office layout by adopting such a structure, the office layout can be changed if it takes time to move and fix the optional members. The work required for this will not be reduced enough. It does not fully meet the demands of the workers.

  Here, the conventional option member described above will be described. With respect to such an option member, with respect to the work for movement and installation, after the option member is arranged at a desired location, it is prevented from being removed from the rail groove. The stopping process and the operation of fixing the option member to the rail groove are performed by separate operations. That is, even if such a structure adopts a structure that can quickly change the arrangement of the top plate or the like. The office worker needs time and effort to change the layout of the options, and there is a possibility that a quick office layout change cannot be realized sufficiently.

  The present invention pays attention to such a problem, and provides an option mounting device capable of easily, quickly and reliably mounting an option member to a base.

  In order to achieve such an object, the present invention takes the following measures. That is, the option mounting device according to the present invention includes an option mounting bracket in which an insertion end can be inserted into and removed from an opening provided in a base, an engagement body provided at the insertion end of the bracket, and a single operation. A body and an operating force applied to the operating body to operate the engaging body from a retracted position where the insertion end portion can be inserted into the opening to an engaging position where the engaging portion can be engaged with the engaging portion of the base body. It comprises a combined drive mechanism and a tightening mechanism that presses the engaging body against the engaging portion by operating force applied to the operating body.

  In such a case, since the engagement body drive mechanism and the tightening mechanism can be operated in a series of operations by a single operation body, quick and easy removal from the base can be achieved. The movement can be realized. By doing so, it becomes possible to suitably change the arrangement of the option members in accordance with the arrangement of the top board or the like, for example, in response to frequent office layout changes. As a result, the office layout system can be easily and quickly changed in office layout.

And this invention can take the engaging position which can be engaged with an engaging part by expanding an engaging body from a retracted position as an engaging body which can be suitably engaged with the engaging part of a base | substrate. It is characterized by a widening claw. Further, in order to reliably prevent the opening from being removed, such an expansion claw faces a direction opposite to the removal direction from the insertion direction to the base and can engage with a part of the base at the expansion position. A rotation shaft portion that can rotate the expansion claw between the mating surface, the expansion position, and the retraction position, and the rotation shaft portion is provided closer to the insertion tip side in the insertion direction than the engagement surface. If the expansion claw is engaged with the engagement portion, the expansion claw is further expanded and the engagement with the engagement portion is more reliably performed. It becomes.

  A structure that has a lever that can rotate the operating body as a configuration that achieves high-precision operation by rotating operation and can also obtain a large acting force with a small operating force using the principle of lever Is desirable.

  As a configuration capable of suitably linking the operation of the engagement body driving mechanism and the tightening mechanism, the operation body is engaged with an engagement operation transmission cam that can apply an operation force for setting the engagement body to the engagement position, and the engagement body. It is desirable to integrally have a tightening operation transmission cam that transmits the operation of pressing the joint.

  As a configuration for realizing an accurate operation in which both the engagement position and the retracted position can be reliably obtained, the engagement body drive mechanism is changed to an operation in which the operation force transmitted from the engagement operation transmission cam is used as the engagement position. It is desirable to have an engaging motion converting portion that can be converted and a posture maintaining portion that maintains the engaging body in the retracted position in a state in which the driving force is not applied to the engaging motion converting portion.

  A first urging element that urges the attitude maintaining unit to position the engaging motion converting unit to a position where the engaging body is in the retracted position; and a second urging element that urges the engaging body to take the engaging position. If it has, it will be the structure which can be positioned in a retracted position reliably, and can implement | achieve the favorable insertion / extraction to an opening part.

  A tightening operation conversion unit that converts the tightening operation force into an operation for engaging the engagement body at the engagement position, so that the operation force for operating the tightening mechanism can be suitably applied to tighten the base. It is desirable to have.

  As a preferred embodiment of the tightening operation converting portion capable of suitably tightening the base, the tightening operation converting portion is constituted by a tightening operation transmitting cam and the bracket described above, and the tightening operation transmitting cam is a part of the base. Examples include pressing the part in one direction to move the bracket together with the engagement body at the engagement position in the other direction, which is opposite to the one direction, and pressing the engagement body against the base.

  Further, when the opening is a rail groove, it can be suitably moved while supporting the load of the bracket along the rail groove, and when being tightened to the base by the tightening mechanism, the load is not separated from the opening. In order to be able to effectively increase the durability of the wheel part itself as a configuration in which a load is applied only when necessary, the bracket can be moved along the extending direction of the rail groove. A wheel part that can contact the opening and support the bracket is provided, and when the tightening operation transmission cam presses a part of the base in one direction, the wheel part moves in the other direction together with the bracket to be separated from the base. Is desirable.

  As a specific configuration relating to a single operating body, the engaging body is set to the retracted position on one end side of the operating range of the operating body, the engaging body is set to the engaging position on the other end side, and the tightening mechanism tightens the base. There may be mentioned those that are tightened. Specifically, the engagement position for engaging the engagement body may be set in the vicinity of one end side from the one end side to the other end side after insertion into the opening.

  In the option mounting device according to the present invention, if the opening is a rail groove and the bracket is movable along the extending direction of the rail groove, the optional member is suitably arranged in accordance with the desk arrangement in the office. Can be.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to comprise the attachment apparatus of the option member which can implement | achieve quick and easy removal and movement with respect to a base | substrate. By doing so, it becomes possible to suitably change the arrangement of the option members in accordance with the arrangement of the top board or the like, for example, in response to frequent office layout changes. As a result, the office layout system can be easily and quickly changed in office layout.

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

  The desktop panel OP mounting device 8 as an optional mounting device according to the present embodiment is applied to an office configuration system formed by connecting two desks 1 shown in FIG.

  The desk 1 in the office configuration system 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 one end on the support 4. And the leg 6 that supports the other end of the top plate 5 and contacts the floor. In this embodiment, as described above, the desktop panel OP, which is an optional member, is preferably attached to the upper side of the base 2 via the option attachment device 8 described in detail later.

  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. 1 and 2, the base 2 has a substantially quadrangular prism shape that extends substantially linearly. Rail grooves functioning as top plate guide portions for guiding the movement of the support 4 are provided in a pair of upstanding surface portions facing each other along the longitudinal direction of the base 2. In the present embodiment, a pair of rail grooves extending along the longitudinal direction of the base 2 are formed on each of the standing surface portions so as to be spaced apart from each other by a predetermined pitch in the height direction and parallel to each other.

  On the upper surface 2B of the base 2, a rail groove 23 for moving and guiding the desktop panel OP as an optional member is provided. A plurality of (four in the illustrated example) rail grooves 23 are formed on the upper surface portion 2 </ b> B so as to be spaced apart from each other by a predetermined pitch in the short dimension direction of the base 2 and to extend parallel to each other. The relative position of the desktop panel OP with respect to the base 2 can be changed by sliding the desktop panel OP along the rail groove 23.

  As the desktop panel OP, in addition to the one-side support type desktop panel OP as shown in FIG. 3, as shown in FIG. 4, a desktop panel OP2 that is used with both sides supported by the mounting device 8 can be cited. In addition to the desktop panels OP and OP2, various existing members such as task lights can be adopted as optional members. Each rail groove 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 addition to FIG. 1, the base 2 with the end cap 2C removed is shown). .

  Here, an option mounting device (hereinafter referred to as a mounting device) 8 according to the present embodiment is for mounting a desktop panel OP in which an insertion end 81a can be inserted into and removed from a rail groove 23 that is an opening provided in a base 2 that is a base. The bracket 81, the widening claw 832 which is an engaging body provided at the insertion end 81a of the bracket 81, the single operation body 82 attached to the bracket, and the widening claw 832 are inserted into the rail groove 23 by the insertion end 81a. An engaging body, which will be described later, is held at the retracted position (P) when inserted into the bracket and is operated to an engaging position (Q) that is an engaging position where the bracket 81 can engage with the protrusion T of the rail groove 23 after insertion. The expansion claw drive mechanism X as a drive mechanism and the tightening mechanism Z that presses the expansion claw 832 against the protrusion T by an operating force applied to the operation body 82 are characterized.

  Hereinafter, the structure of the rail part 23a as an opening part which concerns on this embodiment, and the attachment apparatus 8 is demonstrated using FIG.5, FIG.6, FIG.7 and FIG. FIG. 5 is a plan view of the attachment device 8. FIG. 7 shows a cross-sectional view taken along line AA in FIG. 5, and FIG.

  First, as shown in FIGS. 3 and 7, the rail groove 23 is formed by a rail portion 23 a that rises upward from the bottom surface 20 </ b> B on the top surface portion 2 </ b> B of the base 2.

  As shown in the figure, the rail portion 23a has a main rail 23b and a side rail 23c that rise upward from the bottom surface 20B as described above. The rail portions 23a have protrusions T on both side surfaces of the main rail 23b and on the inner surface of the side rail 23c. Specifically, the protrusion T has a first step portion 232 including the upper surface 231 and a second step portion 233 that protrudes laterally below the first step portion 232. The upper surface 231 of the rail portion 23a that is the upper side of the first step portion 232 and the downward surface 234 of the second step portion 233 are sandwiched and tightened by a tightening mechanism Z described later. Here, the protrusion T of the rail portion 23 provided on the base as the base, specifically the downward surface 234 of the protrusion T, corresponds to the engaging portion of the base according to the present invention.

  As shown in FIGS. 5, 6, 7, and 8, the mounting device 8 constitutes the main body of the mounting device 8 and is configured to be movable along the extending direction of the rail groove 23. An operation body 82 provided on the upper side of the bracket 81, an expanding claw portion 83 provided below the bracket 81, and a transmission that is built in the bracket 81 and that can transmit the operating force of the operating body 82 to the expanding claw 832. Plate portion 84.

  As shown in the figure, the bracket 81 is provided with a desktop panel OP attached to and supported on the upper part, and an insertion end part 81a that can be inserted into and removed from the rail groove 23 provided on the base 2 at the lower part. Further, the bracket 81 is movable along the extending direction of the rail groove 23, and the desktop panel OP can be suitably arranged according to the arrangement of the top plate 5 and the like. Specifically, the option mounting portion 811, the operating body mounting portion 812, the plate insertion groove 813, the spring accommodating hole 814, the claw mounting portion 815, the wheel portion 816, the attachment roller 817, and the grounding portion 818. The option attachment portion 811 is attached so as to be able to turn by inserting a part of the desktop panel OP from above, and the specific shape and specification of the option attachment portion 811 are in accordance with the specification of the desktop panel OP. Various aspects can be adopted. The operating body mounting portion 812 is formed by projecting the upper center of the bracket 81 upward, and an operating body 82 to be described later can be pivotally mounted so as to be able to rotate about 90 °. The plate insertion groove 813 can be inserted into a predetermined position by inserting a transmission plate 841 described later from the upper end of the bracket 81. The spring accommodating hole 814 can be accommodated in a state where the coil spring 842 is dropped to the bottom of the plate insertion groove 813 in the bracket 81. The wheel portion 816 is positioned substantially at the center in the front view of the insertion end portion 81a of the bracket 81, and smoothly moves the bracket 81 itself along the extending direction of the rail groove 23 in a state of being in contact with the bottom surface 20B. is there. Then, by positioning the grounding portion 818 at both ends in front view at the insertion end portion 81a of the bracket 81, the bracket 81 falls down along the extending direction of the rail groove 23 while assisting the movement of the bracket 81 by the wheel portion 816. It is for suppressing this. The contact roller 817 avoids a collision between the other portion of the bracket 81 and the rail 23a by preferentially abutting against the rail 23a except for an expanding claw 832 described later when the bracket 81 is moved. Is for.

  As shown in the figure, the expansion claw 83 is attached to two claw attachment portions 815 at the insertion end 81a of the bracket 81, and has an expansion claw 832 that is symmetric in cross section and an expansion claw 832. A rotation shaft 831 for rotatably mounting the opening claw 832 with respect to the bracket 81, and an expansion spring 833 as a second urging element that urges the expansion claw 832 to take the engagement position (Q). is doing. The rotating shaft 831 is, for example, screwed in a state in which the expanding claw 832 is passed through the claw mounting portion 815 of the bracket 81. The expansion pawl 832 has an engagement surface 832a that can engage with the protrusion T of the rail 23a, specifically, the downward surface 234, and a contact surface 832b that can contact a transmission plate 841 described later. Yes. In this embodiment, the rotation shaft 831 as the rotation shaft portion according to the present invention is provided on the insertion tip side in the insertion direction with respect to the engagement surface 832a.

  As shown in the figure, the operating body 82 includes an expanding claw operating body 82a that receives an operating force for moving the expanding claw 832 to the engagement position (Q), and both sides of the expanding claw operating body 82a. It has a tightening operation body 82b that is stacked and has substantially the same front view shape as the expansion claw operation body 82a and receives an operation force that is supported by the bracket 81 and tightens the base. An expansion claw operation lever 821 that can be rotated by an operation force is provided on the distal end side of the expansion claw operation body 82a, and at least a part of the expansion claw operation body 82a that can apply an operation force to the transmission plate 841 is provided on the proximal end side. And an opening motion transmission cam 822. Further, the tightening operation body 82b is brought into an operation of pressing the tightening operation levers 823 positioned on both sides of the above-described expansion claw operation lever 821 and the expansion claw 832 in the engagement position (Q). It has a tightening motion transmission cam 824 that constitutes a tightening motion converting portion Z1 to be described later. A predetermined pressing plane 824a for pressing the upper surface 231 of the rail 23a is provided on one end side of the cam sliding contact surface of the tightening operation transmission cam 824. Further, in the present embodiment, a single integrated operation body 82 according to the present invention is configured by attaching the expansion claw operation body 82a and the tightening operation body 82b together to the operation body mounting portion 812 of the bracket 81. Yes.

  As shown in the figure, the transmission plate portion 84 includes a transmission plate 841 that is inserted and supported in the bracket 81, and a coil spring 842 that is also supported in the bracket 81 and that can bias the bracket 81. Have. Specifically, the transmission plate 841 is, for example, a resin plate formed in a generally U shape in front view and accommodated in a plate insertion groove 813 provided in the bracket 81, and the above-described expansion operation is performed at the upper end. While being pressed by the transmission cam 822, the lower end comes into contact with the contact surface 832b of the expanding claw 832 so that the expanding claw 832 can be set to the retracted position (P). The coil spring 842 can urge the transmission plate 841 from below while being accommodated in the spring accommodation hole 814 of the bracket 81, and the vertical position of the transmission plate 841 is within the plate insertion groove 813 as shown in FIG. The sliding contact surface of the expansion operation transmission cam 822 and the upper end of the coil spring 842 are determined.

  Thus, in the attachment device 8 according to the present embodiment, the insertion end 81a of the expansion claw 832 is inserted into the opening by the operating body 82, the transmission plate portion 84, and the expansion claw 832 described above. At this time, the expansion pawl drive mechanism X is configured to be held at the retracted position (P) and operated to the engagement position (Q) where the bracket 81 does not come out of the rail groove 23 after insertion.

  In addition, the mounting device 8 according to the present embodiment is configured such that the above-described bracket 81, operation body 82, transmission plate 841, and expansion claw 832 are used to connect the expansion claw 832 at the engagement position (Q) to the rail 23a. The fastening mechanism Z is configured to fix the desktop panel OP to the base 2 by fastening the base body by pressing against the downward surface 234.

  Hereinafter, the expansion pawl drive mechanism X and the tightening mechanism Z will be described in detail.

  The expansion claw drive mechanism X is configured by the expansion claw operating body 82a described above and the driving force transmission means X1 according to the present embodiment. The driving force transmission means X1 includes the above-described transmission plate 841 serving as an engagement operation conversion unit that can convert the driving force from the operating body 82 into an operation for causing the expansion claw 832 to operate to the engagement position (Q), and the transmission plate. 841 is configured by a posture maintaining portion X2 that maintains the expansion pawl 832 in the engagement position (Q) in a state where no driving force is applied. The posture maintaining unit X2 includes a coil spring 842 corresponding to a first urging element that urges the posture of the transmission plate 841 to the position where the expansion claw 832 is set to the engagement position (Q) as shown in FIGS. The expansion claw 832 is constituted by an expansion spring 833 corresponding to a second biasing element that biases the engagement position (Q).

  On the other hand, the tightening mechanism Z includes the above-described tightening operation body 82b and a tightening operation conversion unit Z1 that converts the tightening operation force into an operation of pressing the expanding claw 832 at the engagement position (Q). The tightening operation converting portion Z1 is composed of a tightening operation transmitting cam 824 and a bracket 81.

  Here, by operating the expansion pawl drive mechanism X and the tightening mechanism Z provided in the attachment device 8 according to the present embodiment, the insertion end of the bracket 81 from above with respect to the opening of the base, that is, the rail groove 23. A series of processes from inserting 81a and fastening the attachment device 8 to the base will be described in detail with reference to FIGS.

  As shown in FIGS. 7 and 8, the transmission plate 841 is positioned at the lower end in the operation range in a state where the operation body 82 is substantially vertical, and the transmission plate 841 is placed on the contact surface 832 b of the expansion claw 832. The abutment claw 832 is positioned at the retracted position (P) by the contact. In this state, since the mounting device 8 is in contact with the bottom surface 20B of the wheel portion 816, good movement along the rail groove 23 is ensured, and the mounting device 8 can be easily inserted and removed from the rail groove 23. It has become. When the operation lever is tilted from such a state, as shown in FIGS. 9 and 11, the transmission plate is moved by the elastic biasing force of the coil spring 842 as the position of the sliding contact surface where the expansion operation transmission cam 822 contacts the transmission plate 841 changes. 841 goes up. Then, the transmission plate 841 is separated from the contact surface 832b of the expansion claw 832. At this time, the expansion claw 832 is expanded by the action of the expansion spring 833 provided in the expansion claw portion 83, and the engagement position (Q) shown in FIG. 9 is obtained. In this state, since the wheel unit 816 is in contact with the bottom surface 20B, the mounting device 8 ensures good movement along the rail groove 23. However, the expanding claw 832 faces the downward surface of the rail 23a. Therefore, the attachment device 8 is prohibited from being removed from the rail groove 23.

  Then, as shown in FIGS. 10 and 12, when the operation lever is tilted to the other end, which is a substantially horizontal position, the above-described tightening mechanism Z is operated, and the tightening mechanism Z is tightened to the base. Become. At this time, the tightening motion transmission cam 824 presses a part of the base member in one direction to move the bracket 81 in the other direction which is opposite to the one direction together with the expanding claws 832 in the engagement position (Q). Thus, the expanding claws 832 are pressed against the base. When the tightening operation transmission cam 824 presses a part of the base in one direction, the wheel portion 816 moves in the other direction together with the bracket 81 and is separated from the bottom surface 20B.

  With the configuration as described above, the option mounting device 8 according to the present embodiment includes a single operating body 82 and an expanding claw driving mechanism that is an engaging body driving mechanism that can be operated by the single operating body 82. X and the tightening mechanism Z are provided, so that it is possible to operate the expansion pawl drive mechanism X and the tightening mechanism Z in a series of operations by a single operating body 82. It is possible to realize quick and easy removal and movement with respect to the base 2.

  In this embodiment, the engaging body is an expanding claw 832 that takes an engaging position (Q) that can be engaged with the protrusion T as an engaging portion by expanding the engaging body from the retracted position (P). Therefore, the engaging portion of the base, that is, the protrusion T of the rail portion 23 a provided on the base 2, specifically, the downward surface 234 of the protrusion T can be suitably engaged. Then, such an expanding claw 832 faces the pulling-out direction opposite to the insertion direction to the base and can engage with the downward surface 234 of the protrusion T which is a part of the base body at the expanding position. 832a and a rotation shaft 831 that is a rotation shaft portion that can rotate the expansion claw 832 between the expansion position and the retracted position (P), and the rotation shaft 831 is more than the engagement surface 832a. Since it is provided on the insertion tip side in the insertion direction, the expansion claw 832 is further expanded when the expansion claw 832 is moved in the removal direction with the downward surface 234 engaged. Therefore, the engagement with the downward surface 234 is more reliably performed.

  Since the operation body 82 has an expanding claw operation lever 821 and a tightening operation lever 823 that can rotate the operation body 82, a highly accurate operation is realized by the rotation operation, and the lever principle is used. It is also possible to obtain a large acting force with a small operating force. The operating body 82 has an expansion operation transmission cam 822 as an engagement operation transmission cam that can apply an operation force for setting the expansion claw 832 to the engagement position (Q), and the expansion claw 832 on the downward surface. It is configured so that the operation of the expansion pawl drive mechanism X and the tightening mechanism Z can be suitably interlocked with the tightening operation transmission cam 824 that integrally transmits the operation of engaging with the 234.

  Specifically, the expansion claw drive mechanism X can be converted into an engagement operation that can convert the operation force transmitted from the expansion operation transmission cam 822 into an operation in which the expansion claw 832 is in the engagement position (Q). The engagement position (Q) and the retracting position are assumed to include a transmission plate 841 that is a part and a posture maintaining portion X2 that maintains the expanding claw 832 to the retracted position (P) in a state where the driving force is not applied to the transmission plate 841. An accurate operation that can reliably take both positions (P) is realized. Then, the posture maintaining unit X2 engages the expansion claw 832 with the coil spring 842 as a first urging element that urges the transmission plate 841 to the position where the expansion claw 832 is at the retracted position (P). Since it has the expansion spring 833 as the second urging element for urging so as to take the position, it can be surely positioned at the retracted position (P), and good insertion into and removal from the rail groove 23 can be realized. It has become.

  On the other hand, in the present embodiment, the tightening mechanism is provided with the tightening operation converting portion Z1 that converts the operation force for tightening into the operation of engaging the expanding claw 832 in the engagement position (Q). The operating force for operating Z can be suitably used as an acting force for tightening the rail portion 23a of the base 2.

  As a preferred embodiment of the tightening operation converting portion Z1, in this embodiment, the tightening operation converting portion Z1 is constituted by the tightening operation transmitting cam 824 and the bracket 81, and the tightening operation transmitting cam 824 is a part of the base. By pushing the bracket downward, the bracket 81 is lifted upward in one direction together with the spread claw 832 in the engagement position (Q), and the spread claw 832 is reliably pressed against the downward surface 234. It is supposed to be engaged.

  Further, when the opening is the rail groove 23 as in the present embodiment, it can be suitably moved while supporting the load of the bracket 81 along the rail groove 23, and when tightening to the base body by the tightening mechanism Z In the configuration in which the load is applied to the wheel portion 816 only when necessary, the durability of the wheel portion 816 itself can be effectively increased by separating the opening from the opening and applying a load.

  In this embodiment, in order to suitably link the expansion claw drive mechanism X and the tightening mechanism Z with the single operation body 82, the expansion claw 832 is moved to the retracted position (at one end side of the operation range of the operation body 82). P), and the expansion claw 832 is set to the engagement position (Q) on the other end side, and the tightening mechanism Z is in a tightened state in which the base is tightened. In detail, after the insertion, in order to quickly stop the integrated operating body 82 by slightly operating the integrated operation body 82 from one end side, the expanding claw 832 is expanded near one end side from one end side to the other end side. A part to be an engagement position (Q) to be opened is set.

  Although the embodiment of the present invention has been described above, the specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, although the rail groove provided in the base is applied as the opening in the above embodiment, the opening according to the present invention is not limited to the rail groove. For example, as shown in FIG. 13, according to the present invention, it is possible to configure an attachment device 8B that is also applied to an opening H provided in a top plate as shown in FIG. In this case, the attachment device 8A has substantially the same configuration as that of the above embodiment and is given the same reference numerals, but by appropriately changing the shapes of the bracket 81, the expansion claws 832 and the transmission plate 841 according to the shape of the opening H. The periphery of the opening H can be suitably tightened from the front and back by the engaging surface 832a and the pressing plane 824a.

In the present invention , an expanding claw is employed as the engaging body . On the other hand , as a reference example different from the present invention for enabling easy engagement and engagement of the engagement body with high accuracy, as shown in FIG. 15, for example, a rotation engagement body 83B using a rotation operation. The thing like the attachment apparatus 8B which employ | adopted can be mentioned . In this structure, when the elliptical plate-like rotation engagement body 83B is rotated by, for example, 90 ° by the operation of the operation body, a part of the rotation engagement body 83B protrudes to the side, and the base 2 such as the base 2 It can be suitably engaged with the part.

  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.

The external view which concerns on one Embodiment of this invention. The side view which concerns on the same embodiment. The top view which concerns on the same embodiment. Same as above. The principal part top view which concerns on the same embodiment. FIG. II sectional view taken on the line of FIG. FIG. 6 is a plan sectional view according to FIG. 5. Operation | movement explanatory drawing which concerns on the same embodiment. Same as above. Same as above. Same as above. The figure which concerns on the modification of the embodiment. The typical sectional view concerning the modification. The figure which concerns on the reference example of the embodiment.

Explanation of symbols

2 ... Base (base)
23 ... Opening (rail groove)
T ... ridge (engagement part)
8 ... Option mounting device (Mounting device)
DESCRIPTION OF SYMBOLS 81 ... Bracket 81a ... Insertion end part 816 ... Wheel part 82 ... Single operation body (operation body)
82a ... expansion claw operating body 82b ... tightening operation body 821 ... expansion claw operating lever 822 ... expansion operation transmission cam 823 ... tightening operation lever 824 ... tightening operation transmission cam 832 ... expansion claw (engaging body)
832a ... engaging surface 833 ... second biasing element (expanding spring)
841... Engagement motion conversion part (transmission plate)
842 ... First pusher (coil spring)
H: Opening part P ... Retraction position Q ... Engagement position X ... Engagement body drive mechanism X1 ... Driving force transmission means X2 ... Posture maintenance part Z ... Tightening mechanism Z1 ... Tightening operation conversion part

Claims (12)

An optional mounting bracket that can be inserted / removed into / from an opening provided in the base,
An engaging body provided at the insertion end of the bracket, a single operating body,
An engagement body drive mechanism for operating the engagement body from a retracted position where the insertion end portion can be inserted into the opening portion to an engagement position where the engagement portion can be engaged with the engagement portion of the base body by operating force applied to the operation body. When,
A tightening mechanism that presses the engaging body against the engaging portion by operating force applied to the operating body ;
An option attachment device, wherein the engaging body is an expanding claw capable of taking the engaging position that can be engaged with the engaging portion by expanding the engaging body from the retracted position . The expansion claw faces an extraction direction opposite to the insertion direction to the base, and is between an engagement surface that can engage with a part of the base in the expansion position and the expansion position and the retraction position. The optional attachment device according to claim 1, further comprising: a rotation shaft portion capable of rotating the expanding claw, wherein the rotation shaft portion is provided closer to the insertion tip in the insertion direction than the engagement surface . The option mounting device according to claim 1, wherein the operation body includes an operation lever capable of rotating . An engagement operation transmission cam capable of applying an operation force for setting the operation body to the engagement position, and a tightening operation transmission cam for transmitting an operation of pressing the engagement body against the engagement portion. The optional mounting device according to claim 1, 2 or 3, wherein the optional mounting device is integrally formed . An engagement operation conversion unit that can convert the operation force transmitted from the engagement operation transmission cam into an operation that uses the engagement body as an engagement position, and the engagement operation conversion unit that drives the engagement body drive mechanism. The optional attachment device according to claim 4, further comprising a posture maintaining unit that maintains the engagement body at the retracted position in a state where the engagement is not provided . A first urging member for urging the posture maintaining unit to a position where the engagement body is retracted; and a second urging the engagement body to take the engagement position. 6. The option mounting device according to claim 5, further comprising an urging element. 6. The tightening mechanism includes a tightening operation converting portion that converts an operation force transmitted from the tightening operation transmitting cam into an operation in which an engagement body at the engagement position presses the base. Or the optional attachment apparatus of 6 . The tightening operation converting portion is constituted by the tightening operation transmitting cam and the bracket,
When the tightening motion transmission cam presses a part of the base in one direction, the bracket is moved together with the engagement body at the engagement position in the other direction opposite to the one direction. The optional mounting device according to claim 7, wherein the base plate is brought into pressure contact with the base body . The opening is a rail groove, and the bracket is movable along the extending direction of the rail groove,
The bracket is provided with a wheel portion that can contact the opening and support the bracket, and when the tightening motion transmission cam presses a part of the base in one direction, the wheel portion moves in the other direction together with the bracket. The option mounting device according to claim 8, wherein the option mounting device moves and separates from the base body . The engagement body is in a retracted position on one end side of the operating range of the operating body, the engagement body is in an engagement position on the other end side, and the tightening mechanism is in a tightened state in which the base is tightened. Item 8. The optional mounting device according to 1, 2, 3, 4, 5, 6 or 7 . The option attachment device according to claim 8, wherein an engagement position for engaging the engagement body is set near the one end side from the one end side to the other end side . The option according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11, wherein the opening is a rail groove, and the bracket is movable along the extending direction of the rail groove. Mounting device.

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