JP7605586B2 - furniture - Google Patents

Description

The present invention relates to a fixture that includes a base structure and mounting parts that are attached to the base structure.

As a technique for attaching a top plate to a base structure such as a sleeve or leg, the applicant has previously disclosed in Patent Document 1 a configuration in which a locking claw provided at the rear of the bottom surface of the top plate is inserted diagonally from the front and engaged with a locking edge formed at the rear of the top surface of the base structure, and then a synthetic resin fastener provided at the front of the bottom surface of the top plate is dropped into a locking hole formed at the front of the top surface of the base structure to elastically engage it. The configuration of Patent Document 1 has the advantage of allowing the top plate to be easily attached to the base structure.

Patent No. 3472423

However, in the configuration of Patent Document 1, the top plate is placed in an inclined position with the rear end higher in order to engage the locking claws of the top plate with the locking edges of the base structure. Therefore, when attaching a top plate with a shelf or the like on the rear end to a base structure installed against a wall, there is a concern that there will be no space on the rear side (wall side) and the shelf or the top plate will rub against the wall and cause damage. Such problems can occur not only when attaching a top plate to a base structure, but also when attaching various attachment parts such as a seat to the base structure.

The technical objective of the present invention is to provide fixtures that have been improved upon by examining the current situation as described above.

The present invention is a fixture comprising a base structure and an attachment part attached to the base structure, and the base structure and the attachment part are connected in a two-stage movement in which the attachment part is moved in a first direction facing the base structure relative to the base structure and then moved in a second direction intersecting the first direction, so that the attachment parts fit together in a manner that prevents them from coming loose or slipping out of place.

In the fixture of the present invention, the engagement method is constituted by an engagement hole formed in either the base structure or the mounting part, and an engagement member or engagement claw provided on the other, the engagement member having a slip-prevention claw portion that catches on and engages with the edge of the engagement hole, a slip-prevention piece portion that is biased in a direction to fit into the engagement hole, and a release operation portion that operates the slip-prevention piece portion in a direction to release it from the engagement hole, and the base structure and the mounting part are connected by the slip- prevention piece portion fitting into the engagement hole with the slip-prevention claw portion hooked on and engaged with the edge of the engagement hole, and the four engagement holes used when attaching the mounting part to the base structure are positioned so as to form the four corners of a square in a plan view with respect to the base structure or the mounting part, and the release operation portion of the engagement member is located between the base structure and the mounting part.

In the fixture of the present invention, the locking member may be provided on the front side in the second direction in either the base structure or the mounting part, while the locking claw may be provided on the rear side in the second direction.

According to the present invention, when attaching an attachment part having an attachment to a base structure installed against a wall, for example, there is no need to hold the attachment part at an angle as in the conventional technology, and there is no risk of the attachment part rubbing against the wall and damaging it, even if there is no space on the wall side. In other words, the work of assembling the fixture can be carried out without damaging the surrounding objects or the attachment part. In addition, since the physical labor of holding the attachment part at an angle as in the conventional technology can be eliminated, the workability of assembling the fixture is improved.

FIG. 1 is a perspective view of a chair device as furniture according to the present invention. FIG. 2 is a perspective view of the mounting component and the base structure; FIG. FIG. FIG. 4 is a plan view showing the mounting components and the base structure separated from each other; 1A is an explanatory diagram of the base and the anti-pullout claw portion of the locking member, (a) is a plan view, (b) is a front view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, (f) is a cross-sectional view taken along line ff of (a), and (g) is a cross-sectional view taken along line gg of (a). 1A to 1C are explanatory diagrams of the anti-slip piece portion of the locking member, where (a) is a front view, (b) is a rear view, (c) is a plan view, (d) is a right side view, and (e) is a cross-sectional view taken along the line ee of (a). 5A and 5B are explanatory diagrams of a release operation portion of a locking member, in which (a) is a plan view and (b) is a cross-sectional view taken along line bb of (a). 1A is an explanatory diagram of a locking claw, where (a) is a plan view, (b) is a front view, (c) is a bottom view, (d) is a left side view, (e) is a right side view, and (f) is a cross-sectional view taken along line ff of (a). 5A to 5C are explanatory diagrams showing a procedure for engaging the locking member with the locking hole. 6(d) to 6(f) are explanatory diagrams showing the procedure for engaging the locking claws with the locking holes. 5A to 5C are explanatory views showing a procedure for disengaging the locking member from the locking hole. FIG. 11 is an exploded perspective view of a locking member according to a second embodiment. 5A to 5C are explanatory diagrams showing a procedure for engaging the locking member with the locking hole. 6(d) to 6(f) are explanatory diagrams showing the procedure for engaging the locking claws with the locking holes. 5A to 5C are explanatory views showing a procedure for disengaging the locking member from the locking hole. FIG. 1 is a perspective view showing an example of an L-shaped chair device. FIG. 2 is a perspective view of an L-shaped chair device, showing an attachment part and a base structure; FIG. 4 is an exploded perspective view showing a manner in which the underframe and the extension connector are connected to each other. FIG. 4 is an exploded plan view showing a manner in which the underframe and the extension connector are connected to each other. 5A, 5B, and 5C are explanatory views of a spacer, in which FIG. 5A is a plan view, FIG. 5B is a bottom view, and FIG. FIG.

Next, an embodiment of the present invention will be described with reference to the drawings. In the following description, terms such as "front/back," "left/right," "front," and "back" are used to specify directions, but these are based on the orientation of the user using the chair device as the furniture of the present invention. In other words, the direction in which the seats are arranged in the chair device is defined as the left/right direction or lateral direction, and the depth direction is defined as the front/back direction. However, these terms are used for convenience of explanation and do not limit the technical scope of the present invention. Furthermore, the horizontal direction is used as a general term for the left/right direction or lateral direction and the front/back direction.

The chair device 1 as a piece of furniture shown in Figures 1 to 5 includes a seat body 2 as an attachment part and a base structure 3 that supports the attachment part (seat body 2). In the chair device 1 of the first embodiment, two seat bodies 2 are attached to the base structure 3 side by side in the left-right direction. The seat body 2 includes a seat portion 4 on which a person sits and a panel 5 erected on one side of the seat portion 4. A cushion body 5a is provided on the surface of the panel 5 (the surface facing the seat portion 4). The panel 5 of the first embodiment is a cushion panel that includes the cushion body 5a, and the plate-shaped portion protrudes higher (is taller) than the cushion body 5a. Note that the seat body 2 constitutes an attachment part, but is not limited to seat-related parts, and the concept also includes various parts that are attached to a base structure such as a tabletop or shelf for use.

As shown in Figures 4 and 5, each seat body 2 is standardized to have the same size square shape in a plan view. In other words, each seat body 2 is square in a plan view with the panel 5 attached to the seat part 4. Note that in this specification, the terms square, rectangular, and oblong are concepts that include shapes with rounded or chamfered corners.

As shown in Figures 1 to 5, the base structure 3 has an underframe 6 that is rectangular in plan view and four leg supports 9 that support the four corners of the underframe 6. The underframe 6 is composed of a pair of long frames 7 and a pair of short frames 8, and both the long frames 7 and the short frames 8 are made of metal and formed into a hollow angular shape. The underframe 6 that is rectangular in plan view is formed by fixing adjacent long frames 7 and short frames 8 by welding so that each longitudinal end of the long frame 7 forms a corner of the base structure 3. Details will be described later, but in the first embodiment, the upper ends of the leg supports 9 corresponding to each corner of the underframe 6, i.e., each longitudinal end of both long frames 7, are detachably attached.

The connection between each seat body 2 and the base structure 3 is an engagement method in which each seat body 2 is moved in a first direction facing the base structure 3 relative to the base structure 3 and then moved in a second direction intersecting the first direction, so that they fit together and are prevented from coming loose or slipping out of place. The engagement method in the first embodiment is configured by a locking hole 10 formed in either the base structure 3 or each seat body 2, and a locking member 11 and a locking claw 12 provided on the other.

The engagement method of the first embodiment is a two-stage movement in which each seat body 2 is moved downward relative to the base structure 3 as a first direction, and then moved backward as a second direction, to engage with each other. In this case, a locking hole 10 is formed in the base structure 3, and a locking member 11 and a locking claw 12 are provided on each seat body 2. Of course, the locking hole 10 may be formed on the seat body 2 side, and the locking member 11 and the locking claw 12 may be provided on the base structure 3 (frame 6) side.

That is, as shown in Figures 3 to 5, multiple upwardly opening locking holes 10 are formed at appropriate intervals along the longitudinal direction on the top surface of each long frame 7 of the underframe 6. In the first embodiment, eight locking holes 10 that are square in plan view are formed on the top surface of each long frame 7.

At the two corners of the underside of the seat 4 of each seat body 2 near the panel 5, there are fastened locking claws 12 (see Figures 2, 4, 5, 9 and 11) that are hooked and locked to the edges of the corresponding locking holes 10 in the long frame 7 on the far side by screws 13 from below. The tip claw side of each locking claw 12 protrudes toward the rear. Since the locking claws 12 in the first embodiment are made of synthetic resin, when the locking claws 12 are hooked and engaged to the edges of the corresponding locking holes 10 in the long frame 7 on the far side, the risk of the locking claws 12 hitting the edges of the locking holes 10 and generating abnormal noise can be suppressed, and the locking claws 12 are excellent in quietness. A pair of upward projections 12a are formed on the upper surface of the locking claws 12. By fitting these upward projections 12a into the underside of the seat 4, the locking claws 12 are prevented from shifting in position.

At the two corners of the underside of the seat part 4 of each seat body 2 facing the panel 5 (opposite side), locking members 11 (see Figs. 2, 4-8, 10 and 12) that engage with corresponding locking holes 10 in the long frame 7 on the near side are fastened from below with screws 13. Each locking member 11 has a retaining claw portion 11b that hooks and engages with the edge of the locking hole 10 in the long frame 7 on the near side, and a slip-prevention piece portion 11c that is biased in a direction (downward) in which the retaining claw portion 11b fits into the locking hole 10. Furthermore, the locking member 11 of the first embodiment has a release operation portion 11d that operates the slip-prevention piece portion 11c in a direction to release it from the locking hole 10 in which it fits. The tip claw side of the retaining claw portion 11b protrudes toward the back.

As shown in Figures 10 and 12, the slip-stop piece 11c is fitted into the base 11a of the locking member 11 so that it can move up and down using the elasticity of the spring 11e. The lower side of the slip-stop piece 11c is configured to appear and disappear from a downward hole formed in the base 11a of the locking member 11 due to the up and down movement. The release operation part 11d is fitted into the base 11a of the locking member 11 so that it can move sideways. The tip side of the release operation part 11d is configured to appear and disappear from a horizontal hole formed in the base 11a of the locking member 11 due to the horizontal movement. Note that in a type in which an attachment part is placed and fixed on a base structure, it is also possible to adopt a configuration in which the slip-stop piece 11c moves downward by its own weight without using the elasticity of the spring 11e.

In addition, in the first embodiment, when the release operation part 11d is pressed with a finger, the inclined tip of the release operation part 11d comes into contact with the inner inclined surface of the horizontal hole formed in the anti-slip piece part 11c, and moves the anti-slip piece part 11c upward against the elasticity of the spring 11e (see Figures 12(a) and (b)).

The locking member 11 in the first embodiment is made of synthetic resin, so when the locking member 11 is engaged with the corresponding locking hole 10 in the long frame 7 on the front side, the anti-slip claw portion 11b and the anti-slip piece portion 11c do not come into contact with the edge of the locking hole 10, which can cause abnormal noise, and the locking member 11 is as quiet as the locking claws 12. A pair of upward projections 11f are formed on the upper surface of the base 11a of the locking member 11. By fitting these upward projections 11f into the underside of the seat portion 4, the locking member 11 is prevented from shifting in position.

The locking claw 12 of the first embodiment is a form obtained by removing the slip prevention piece portion 11c, the release operation portion 11d, and the spring 11e from the locking member 11 of the first embodiment. In other words, in the second embodiment, the locking claw 12 and the anti-slip claw portion 11b of the locking member 11 are common parts. It is not essential that these are common parts, but commonality is preferable because it reduces the number of parts.

As shown in Figures 4 and 5, the locking members 11 and locking claws 12 at the four corners of the underside of the seat 4 of the seat body 2 are located on each diagonal line DI in a plan view of the seat body 2. In the first embodiment, the seat body 2 is placed on the frame 6 in a predetermined mounting orientation, and the mounting orientation of each seat body 2 can be changed to four horizontal directions (front, back, left, right, and right) by engaging the locking members 11 or locking claws 12 with the corresponding locking holes 10. In this case, since each seat body 2 is standardized to have a square shape of the same size in a plan view, the presence of the panel 5 does not get in the way even if the mounting orientation is changed, and the seat body 2 can be mounted to the base structure 3 as is.

The locking holes 10 on the upper surface of each longitudinal end of both long frames 7 face leg plates 14 (see Figures 10 to 12) that are fixed to the long frames 7 by welding. Additionally, leg attachment holes 15 that open downward are formed on the lower surface of each longitudinal end of both long frames 7. As shown in Figures 10 to 12, with the upper end of the leg support 9 fitted into the leg attachment hole 15, screws 16 are screwed from above through the locking holes 10 and leg plates 14, so that the leg support 9 is detachably fastened to each corner of the underframe 6.

In the above configuration, the seat body 2 is attached to the base structure 3, for example, by the following procedure. That is, the seat body 2 is carried above the frame 6 of the base structure 3 so that the locking members 11 and locking claws 12 on the underside of the seat section 4 of the seat body 2 face the corresponding locking holes 10 in each long frame 7 (see Figures 10(a) and 11(d)). In this case, the seat body 2 is moved above the frame 6 so that the locking members 11 are positioned on the front side and the locking claws 12 are positioned on the back side.

Then, the base body 2 is moved downward facing the frame 6, and the retaining claw portion 11b and the retaining claw 12 of the retaining member 11 are inserted into the corresponding retaining holes 10 (see Fig. 10(b) and Fig. 11(e)). Then, the retaining piece portion 11c of the retaining member 11 abuts against the upper edge surface of the retaining hole 10 and moves upward against the elasticity of the spring 11e, and sinks into the base portion 11a of the retaining member 11 (see Fig. 10(b)).

Next, the base body 2 is pushed inward so that the retaining claw portion 11b and the retaining claw 12 of the retaining member 11 are hooked and engaged with the edges of the corresponding retaining holes 10 (see Figures 10(c) and 11(f)). This causes the anti-slip piece portion 11c of the retaining member 11 to face the gap of the retaining hole 10 formed on the front side of the anti-slip claw portion 11b of the retaining member 11, and the anti-slip piece portion 11c moves downward due to the restoring force of the spring 11e and fits into the gap of the retaining hole 10 mentioned above (see Figure 10(c)). As a result, the base body 2 and the base structure 3 are connected.

In this case, the tip claw side of the retaining claw portion 11b of the retaining member 11 and the retaining claw 12 prevent the retaining member 11 from slipping out (wobbling) in the vertical direction, and the body side of the retaining claw portion 11b of the retaining member 11 and the anti-slip piece portion 11c prevent the retaining member 11 from slipping out (wobbling) in the horizontal direction. Incidentally, the gap in the retaining hole 10 on the front side of the retaining claw 12 remains as it is (see FIG. 11(f)).

Conversely, when removing the seat body 2 from the base structure 3, the following procedure is used, for example. That is, the release operation portions 11d of both locking members 11 on the front side of the underside of the seat part 4 of the seat body 2 are pressed with a finger to move the anti-slip pieces 11c upward against the elasticity of the springs 11e, and the anti-slip pieces 11c are pulled up through the gaps of the corresponding locking holes 10 (see FIG. 12(a)).

Next, the seat 2 is pulled toward the front, and the retaining claw 11b of the retaining member 11 and the retaining claw 12 are displaced from the edge of the corresponding retaining hole 10 to disengage (see FIG. 12(b)). Then, the retaining piece 11c of the retaining member 11 rides up and comes into contact with the upper surface of the edge of the corresponding retaining hole 10, and moves upward against the elasticity of the spring 11e, and sinks into the base 11a of the retaining member 11 (see FIG. 12(b)). Once this state is reached, the finger may be released from the release operation part 11d. Here, the behavior of the retaining claw 12 side is not shown, but the state is the same as in FIG. 11(e).

Then, the base body 2 is moved upward facing the underframe 6, and the retaining claw portion 11b and the retaining claw 12 of the retaining member 11 are pulled up from the corresponding retaining holes 10 (see FIG. 12(c)). As a result, the connection between the base body 2 and the base structure 3 is released. At this point, the state of the retaining claw 12 side is the same as that shown in FIG. 11(d).

According to the above configuration, the seat body 2 is moved in a first direction (downward) facing the base structure 3 and then moved in a second direction (backward) intersecting the first direction in a two-stage movement that fits together to prevent slipping and misalignment. Therefore, when attaching the seat body 2 having an attachment such as a panel 5 on the back side to the base structure 3 installed against a wall, for example, there is no need to hold the seat body 2 in an oblique position as in the conventional technology, and even if there is no space on the back side (wall side), there is no risk of the seat body 2 rubbing against the wall and damaging it. In other words, the chair device 1 can be assembled without damaging the surrounding objects. In addition, since the forceful work of holding the seat body 2 in an oblique position as in the conventional technology can be eliminated, the workability of assembling the chair device 1 is improved.

In addition, when the retaining claw portion 11b of the locking member 11 is hooked and locked onto the edge of the corresponding locking hole 10, the anti-slip piece portion 11c of the locking member 11 is fitted into the locking hole 10 to connect the base structure 3 and the seat body 2. This means that the tip claw side of the retaining claw portion 11b of the locking member 11 prevents the locking member 11 from slipping out (wobbling), and the main body side of the retaining claw portion 11b of the locking member 11 and the anti-slip piece portion 11c prevent the locking member 11 from slipping out (wobbling). This means that the retaining claw portion 11b and the anti-slip piece portion 11c can share the restriction direction, which has the advantage of making it easier to ensure the connection strength.

Furthermore, by providing a locking member 11 on the front side in the second direction (rear direction) in either the base structure 3 or the seat body 2, and providing a locking claw 12 on the rear side in the second direction (rear direction) that hooks onto the edge of a corresponding locking hole 10 formed in the other, the locking claw 12 can be made to have a simpler structure than the locking member 11, so that the cost of parts can be reduced while maintaining the connection strength. In addition, the locking member 11 has a release operation part 11d that operates the slip prevention piece part 11c in a direction to release it from the corresponding locking hole 10, so that the work of removing the seat body 2 from the base structure 3, that is, the work of disassembling the chair device 1 can be easily performed. In addition, installation and removal work can be performed without using special tools, and the seat body 2 can be freely rearranged, such as changing the installation direction, and these points also contribute to improving the workability of the assembly and disassembly work of the chair device 1.

Figures 13 to 16 show a second embodiment in which the structure of the locking member and locking claw is different from that of the first embodiment. Here, in the second and subsequent embodiments, parts that have the same configuration and function as the first embodiment are given the same reference numerals and detailed descriptions thereof are omitted.

As described above, in the second embodiment, the structure of the locking member and locking claw is different from that of the first embodiment. The locking member 21 in the second embodiment has a metal anti-slip claw portion 21b with a U-shaped cross section that hooks and engages with the edge of the locking hole 10 in the long frame 7 on the front side, and a synthetic resin anti-slip piece portion 21c that is biased in a direction (downward) to fit into the locking hole 10 in which the anti-slip claw portion 21b is fitted.

The locking member 21 of the second embodiment further has a synthetic resin cover body 21a that acts as a cushion when the retaining claw portion 21b hits the edge of the locking hole 10. The anti-slip piece portion 21c is integrally provided with a release operation portion 21d that is operated in a direction to release it from the locking hole 10 in which it is fitted, and an elastic piece portion 21e that biases it downward.

The locking member 21 of the second embodiment is fastened from below by screws 23 to two corners on the side (opposite side) of the underside of the seat part 4 of the seat body 2 that faces the panel 5, with the anti-slip piece portion 21c housed inside the anti-slip claw portion 21b to which the cover body 21a is attached. The tip claw side of the anti-slip claw portion 21b protrudes toward the back. The release operation portion 21d protrudes toward the front side, opposite the back direction.

As shown in Figures 13, 14, and 16, the anti-slip piece 21c is fitted into the anti-slip claw 21b so that it can move up and down using the elasticity of the elastic piece 21e. The lower side of the anti-slip piece 11c is configured to appear and disappear from the anti-slip claw 21b of the locking member 21 due to the up and down movement.

In the second embodiment, when the release operation portion 21d is pushed up with a finger, the anti-slip piece portion 21c is moved upward against the elasticity of the elastic piece portion 21e (see Figs. 16(a) and (b)). In this case, the screw 23 is formed with a neck portion 23a that is smaller in diameter than the head portion and larger in diameter than the shaft portion, and the anti-slip piece portion 21c can move up and down by the length of the neck portion 21a. An upward protrusion 21f is formed on the upper surface of the anti-slip claw portion 21b. By fitting the upward protrusion 21f into the underside of the seat portion 4, the locking member 21 is prevented from shifting in position.

As shown in Figure 15, the locking claw 22 of the second embodiment is a locking member 21 of the second embodiment with the anti-slip piece 21c removed, and is fastened from below by screws 23 to two corners of the underside of the seat part 4 of the seat body 2 near the panel 5. That is, the locking claw 22 of the second embodiment has a metal anti-slip claw part 22b with a U-shaped cross section that hooks and engages with the edge of the locking hole 10 in the rear long frame 7, and a synthetic resin cover body 21a that acts as a cushion when the anti-slip claw part 21b hits the edge of the locking hole 10.

The tip of the locking claw 22 protrudes toward the back. An upward projection 22f is formed on the upper surface of the locking claw 22. By fitting the upward projection 22f into the underside of the seat 4, the locking claw 22 is prevented from shifting in position. As described above, the locking claw 22 of the second embodiment is a form in which the anti-slip piece 21c has been removed from the locking member 21 of the second embodiment. In other words, in the second embodiment, the locking claw 22 and the anti-slip claw portion 21b with the cover body 21a are common parts. As in the first embodiment, it is not essential that these are common parts, but commonality is preferable as it reduces the number of parts.

In the above configuration, the procedure for attaching and detaching the seat body 2 to the base structure 3 is substantially the same as in the first embodiment (see Figures 14 to 16). Even when the configuration of the second embodiment is adopted, the same effects as those of the first embodiment are achieved.

Next, with reference to FIG. 17 onwards, other structures that can be employed in the first (or second) embodiment will be described. As shown in FIG. 17 and FIG. 18, the chair device 1 of the first (or second) embodiment is capable of connecting multiple base structures 3 horizontally. In this case, adjacent base structures 3 are connected by connecting the frames 6 via extension connectors 40. FIG. 17 and FIG. 18 show an example of a chair device 31 with an L-shaped configuration.

In the example of Figures 17 and 18, two base structures 3 are connected in an L-shape by connecting one frame 6 to the other frame 6 via two extension connectors 40. A corner seat 32 with two panels 5 erected along two adjacent sides of the seat 4 is arranged at the corner of the combination of the base structures 3. Two seats 2 shown in the first (or second) embodiment are arranged on one side of the corner seat 32. A long seat 33 that is longer horizontally than the seat 2 and the corner seat 32 is arranged on the other side of the corner seat 32. The panels 35 of the corner seat 32 and the long seat 33 are shorter in height than the panel 5 of the seat 2.

At each corner of the underframe 6, extension connectors 40 for connecting another base structure 3 can be attached at two horizontally outer locations. In this case, horizontally opening screw insertion holes 7a, 8a are formed at both longitudinal ends of each frame 7, 8 (see Figures 18 and 19). The screw insertion holes 7a, 8a are for attaching the extension connector 40 to the underframe 6. The extension connector 40 has a holding portion 41 for holding the underframe 6 on each of the two opposing sides. The extension connector 40 has a nut portion 42 embedded therein that opens in the horizontal direction where both holding portions 41 are located. The extension connector 40 is detachably fastened to the corner of the underframe 6 by holding the underframe 6 with the holding portion 41 of the extension connector 40 and screwing a screw 43 from the inside of the underframe 6 into the nut portion 42 of the extension connector 40 through the screw insertion holes 7a, 8a of each frame 7, 8.

As shown in FIG. 18, the extension connectors 40 can be attached not only to each corner of the underframe 6, but also to two horizontally outer locations on the mid-length of each long frame 7. Horizontally opening screw insertion holes 7b are formed at two locations on the mid-length of each long frame 7. The extension connectors 40 are detachably fastened to the two locations on the mid-length of the long frame 7 of the underframe 6 by holding the underframe 6 with the holding portion 41 of the extension connector 40 and screwing the screw 43 from the inside of the underframe 6 into the nut portion 42 of the extension connector 40 through the screw insertion hole 7b of each long frame 7.

If the extension connector 40 did not have the holding part 41, the load would be concentrated on the screw 43, making it difficult to withstand the load. Therefore, the holding part 41 of the extension connector 40 regulates the relative displacement between the frames 6, and the holding part 41 is designed to receive the vertical load so that the screw 43 is not subjected to a vertical load. In addition, if a leg support 9 is attached to the extension connector 40 (details will be described later), the presence of the lower holding part 41 allows the extension connector 40 and the leg support 9 to bear the load in a distributed manner.

A locking hole 10 is formed on the top surface of the extension connector 40 (see FIG. 20). In other words, the locking member 11 and the locking claw 12 can be engaged with the extension connector 40 as well. The locking hole 10 of the extension connector 40 faces the inner plate portion 44 inside the extension connector 40. A leg attachment groove 45 is formed on the lower side of the extension connector 40. With the upper end of the leg support 9 fitted into the leg attachment groove 45, the leg support 9 is detachably fastened to the extension connector 40 by screwing a screw 46 from above through the locking hole 10 and the inner plate portion 44. Therefore, each leg support 9 can be attached to either the frame 6 or the extension connector 40.

As shown in Figures 18 and 21, when attaching the long seat 33 to the underframe 6, a spacer 47 is interposed between the underframe 6 and the long seat 33. Each spacer 47 is made of synthetic resin and has a main body 47a that is rectangular in plan view and a fitting portion 47b that is integrally formed with the main body 47a and out of phase with the main body 47a by approximately 45°. The fitting portion 47b of the spacer 47 is fitted into the locking hole 10 that does not engage with the locking member 11 or the locking claw 12, and then the main body 47a is rotated by approximately 45°, so that the spacer 47 is attached to the locking hole 10.

As shown in Figures 17, 18, and 22, the panels 5 of adjacent seat bodies 2 are connected at the top of their plate-like portions with joint pieces 48 to prevent misalignment. The joint pieces 48 are arranged across the tops of the plate-like portions of adjacent panels 5. Both longitudinal ends of the joint pieces 48 are fastened to the plate-like portions of each panel 5 with screws 49. A joint cover 50 is detachably fitted over the joint pieces 48 fastened with the screws 49 to prevent the screws 49 from being exposed.

The configuration of each part in the present invention is not limited to the embodiment shown in the drawings, and various modifications are possible within the scope of the present invention. For example, the connection between the mounting part and the base structure may be a hanging type in which the mounting part is moved upward as a first direction relative to the bottom surface of the base structure rather than the top surface, and then moved horizontally as a second direction in two steps to fit together, or a side-mounted type (like a wall-mounted type) in which the mounting part is moved horizontally as a first direction relative to the surface of the base structure that extends vertically, and then moved upward or downward as a second direction to fit together in two steps. Also, the locking hole may be provided on the mounting part side, and the locking member and locking claw may be provided on the base structure side.

Furthermore, the structure of the base structure does not have to be limited to a frame and leg supports as in the above embodiment, and various structures such as beams and walls can be used. It is not essential that the mounting parts be standardized by configuring them as squares of the same size in a plan view as in the seat body 2 in the above embodiment.

REFERENCE SIGNS LIST 1 Chair device as furniture 2 Seat body as mounting part 3 Base structure 3 Base structure 4 Seat 5 Panel 6 Underframe 7 Long frame 8 Short frame 9 Leg support 10 Locking hole 11 Locking member 11b Anti-pullout claw portion 11c Anti-slip piece portion 11d Release operation portion 12 Locking claw 13 Screw

Claims (2)

A fixture comprising a base structure and an attachment part attached to the base structure,
The connection between the base structure and the mounting parts is an engagement type in which the mounting parts are moved in a first direction facing the base structure relative to the base structure and then moved in a second direction intersecting the first direction, so that the mounting parts fit together to prevent disengagement and slippage from each other,
the engagement method is constituted by a locking hole formed in one of the base structure and the mounting component, and a locking member or a locking claw provided on the other of the base structure and the mounting component,
The locking member has a slip-prevention claw portion that is hooked onto an edge of the locking hole, a slip-prevention piece that is biased in a direction to fit into the locking hole, and a release operation portion that operates the slip-prevention piece in a direction to release it from the locking hole, and the base structure and the attachment component are connected by the slip-prevention piece fitting into the locking hole with the slip-prevention claw portion hooked onto the edge of the locking hole,
The four locking holes used when mounting the mounting components to the base structure are arranged at the four corners of a square in a plan view with respect to the base structure or the mounting components, and the release operation portion of the locking member is located between the base structure and the mounting components.
furniture. In one of the base structure and the mounting component, the locking member is provided on a front side in the second direction, and the locking claw is provided on a rear side in the second direction.
The fixture according to claim 1.

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