Chair connectors and chair units

Abstract

To provide a chair connector and a chair unit capable of easily connecting chairs arranged side by side at a predetermined interval by the chair connector of a simple configuration without requiring special processing on the chair side, and capable of also improving convenience of the chair to which the chair connector is attached.SOLUTION: A chair connector comprises: a support portion on which a ground plane is formed; a support frame which extends in a vertical direction and whose lower end is fixed to the support portion; and an armrest which extends in a cross direction, and is provided on the upper end of the support frame, the chair connector being arranged on the side of a chair. The support portion is provided with a pair of left and right first coupling portions to which a pair of leg portions extending downward from both left and right ends of a seat portion of the chair is detachably coupled, and the middle portion of the support frame in a vertical direction is provided with a second coupling portion to which the leg portion of the chair disposed on at least one of the left and right sides is coupled.SELECTED DRAWING: Figure 1

Description

Technical Field

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[0001] The present invention relates to a chair connector and a chair unit.

Background Art

[0002] Conventionally, when arranging chairs in a multi-purpose hall or the like, there is known a connecting mechanism for connecting chairs while securing an appropriate space between the chairs arranged side by side in the left-right direction. In Patent Document 1, there is disclosed a chair set including at least two chairs and at least one connecting device, the connecting device having a spacing holding portion for holding the left-right spacing between the chairs, and connecting portions provided at both ends of the spacing holding portion and connected to the respective adjacent chairs.

[0003] In Patent Document 2, there is disclosed a connecting mechanism for a chair including a pair of fittings arranged one on each side of the chair, the pair of fittings including a male member having a substantially T-shaped handle portion and a female member having an up-down groove with an open lower end, and the two similar chairs being integrally connected by engaging the male member and the female member. ​​​​​​​​​​​​​​​​​​​​​​​​​​​According to Patent Document 2, two chairs placed side by side can be connected via armrests. However, since the chairs need to be fitted with male and female components, the number of parts increases, manufacturing costs rise, and connecting and disconnecting the chairs becomes cumbersome.

[0006] The present invention has been made in view of the aforementioned problems, and its purpose is to provide a chair connector and a chair unit that do not require any special processing on the chair side, and that allow chairs placed side by side to be easily connected with a predetermined distance between them using a simple chair connector, while also improving the convenience of the chair to which the chair connector is attached. [Means for solving the problem]

[0007] The above objective of the present invention is achieved by the following configuration. (1) A support part in which the contact surface is formed, A support frame that extends in the vertical direction and whose lower end is fixed to the support portion, It has an armrest portion that extends in the front-rear direction and is provided at the upper end of the support frame, A chair connector that can be positioned on the left and right sides of a chair, The support portion is provided with a pair of first connecting portions on the left and right sides, to which a pair of legs extending downward from both the left and right ends of the seat of the chair are detachably connected. A second connecting portion is provided in the vertical middle of the support frame, to which the legs of the chair, which are positioned on at least one side (left or right), are connected. Chair connector. [Effects of the Invention]

[0008] According to the present invention, chairs placed side by side can be easily connected using a simple chair connector without requiring any special modifications to the chairs themselves. Furthermore, since a predetermined distance can be left between the connected chairs and armrests can be provided, convenience is improved. In addition, the chair connector is designed to be attachable to chairs even if there are only chairs on one side. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a front view showing a chair unit in which chairs are connected to each other by chair connectors. [Figure 2] Figure 2 is a side view showing a chair unit in which chairs are connected to each other by chair connectors. [Figure 3] Figure 3 is a plan view showing a chair unit in which chairs are connected to each other by chair connectors. [Figure 4] Figure 4 is a rear perspective view showing a chair unit in which chairs are connected to each other by chair connectors. [Figure 5] Figure 5 is a cross-sectional view of AA in Figure 1. [Figure 6] Figure 6 is a perspective view of the chair connector. [Figure 7] Figure 7 is a side view of the chair connector. [Figure 8] Figure 8 is a plan view of the chair connector. [Figure 9] Figure 9 is a cross-sectional view of BB in Figure 2. [Figure 10] Figure 10 is a cross-sectional view of CC in Figure 2. [Modes for carrying out the invention]

[0010] The chair connector and chair unit to which the present invention is applied will be described in detail below with reference to the drawings. Figure 1 is a front view showing a chair unit to which chairs are connected by the chair connector. Figure 2 is a side view showing a chair unit to which chairs are connected by the chair connector. Figure 3 is a top view showing a chair unit to which chairs are connected by the chair connector. Figure 4 is a rear perspective view showing a chair unit to which chairs are connected by the chair connector.

[0011] The chair unit 1 includes one or more chairs 10 such as stacking chairs that can be stacked and stored, and a chair connector 20 that is disposed on one side (left or right) of the chair 10 and connected to the chair 10 to provide an armrest portion 23 on the side of the chair 10. The chair connector 20 detachably connects the chairs arranged in the left - right direction, provides a predetermined gap between the chairs 10 connected by the chair connector 20, and has the armrest portion 23 provided. This configuration can be referred to by referring to FIG. 1.

[0012] The chair 10 has a seat portion 11 on which a user sits, leg portions 12 provided on both the left and right sides of the seat portion 11 and extending in the vertical direction, and a backrest portion 13 provided on the upper portion of the leg portions 12 and disposed on the upper - rear side of the seat portion 11.

[0013] The backrest portion 13 is a plate - like member that extends in the left - right direction and is curved backward toward the center in the left - right direction, and is provided so as to span the upper end portions of the pair of leg portions 12, 12. The backrest portion 13 is attached to the upper end portions of the pair of leg portions 12, 12, and by tilting backward upward, it has a backrest central portion 13A that supports the user's back and a backrest lower portion 13B that extends downward from the lower end of the backrest central portion 13A. The backrest lower portion 13B extends from a substantially vertically downward direction and slopes slightly backward and downward, covering the space between the lower end of the backrest central portion 13A and the seat portion 11 in a front view. Thereby, from the user's hip to the waist while sitting well on the seat portion, it can be supported by the backrest lower portion 13B.

[0014] The leg portion 12 is formed by continuously bending a single pipe - shaped member, and a pair of leg portions 12 are provided on both the left and right sides of the seat portion 11 to support the seat portion 11. The leg portion 12 forms, in order from one end, a first backrest support portion 12f, a seat receiving portion 12a, a front leg portion 12b, a lower leg portion 12c, a rear leg portion 12d, and a second backrest support portion 12e. More specifically, each pair of legs 12 has a seat support portion 12a extending in the front-rear direction to receive the seat, a first backrest support portion 12f extending upward from the rear end of the seat support portion 12a with the backrest portion 13 attached to its upper end, a front leg portion 12b extending downward from the front end of the seat support portion 12a, a lower leg portion 12c extending rearward from the lower end of the front leg portion 12b, a rear leg portion 12d extending upward from the rear end of the lower leg portion 12c, and a second backrest support portion 12e extending above the seat support portion 12a with the backrest portion 13 attached to its upper end.

[0015] The first backrest support section 12f and the second backrest support section 12e are formed to overlap in a side view, and the upper ends of both are connected to the backrest section 13. This configuration can be seen in Figure 2. Furthermore, the first backrest support section 12f and the second backrest support section 12e are inclined forward from their lower ends upward in accordance with the inclination of the backrest section 13, and then inclined backward. The lower leg section 12c is fitted with a pair of simple connectors 15 at the front and rear. The simple connectors 15 will be described later.

[0016] Next, the specific configuration of the chair connector 20 will be described based on Figures 1 to 8. Figure 5 is a cross-sectional view of AA in Figure 1. Figure 6 is a perspective view of the chair connector. Figure 7 is a side view of the chair connector. Figure 8 is a plan view of the chair connector. Figure 9 is a cross-sectional view of BB in Figure 2. Figure 9 is a perspective view showing the connected state of the second connecting part.

[0017] The chair connector 20 includes a support portion 21 that rests on the floor on the left and right sides of the chair 10, a support frame 22 that extends vertically and whose lower end is fixed to the support portion 21, an armrest portion 23 that extends in the front-rear direction and is provided at the upper end of the support frame 22, and a cup holder 24 formed on the armrest portion 23. On both the left and right sides of the support portion 21, there is a pair of left and right first connecting portions 30 to which the lower legs 12c of the chair 10 are connected. The upper part of the support frame 22 is provided with a second connecting portion 40 that extends to one side (left or right) and connects to the first backrest support portion 12f and the second backrest support portion 12e of the chair 10.

[0018] The support portion 21 is formed in a long, block-like shape in the front-to-back direction and is located in the center of the chair connector 20 in the front-to-back direction. The entire lower surface of the support portion 21 has a contact surface 21a formed on it for placement between the chairs 10, 10 that are arranged side by side. As a result, the chair connector 20 stands stably on its own.

[0019] The support frame 22 comprises a pair of front and rear first support frames 22A and a second support frame 22B. The first support frame 22A extends vertically, and its lower end is bent in an L-shape toward the rear, with the lower end being attached and fixed to the front end of the support portion 21. The upper end of the first support frame 22A is attached and fixed to the front lower surface of the armrest portion 23. The second support frame 22B extends vertically, and its lower end is bent forward in an L-shape, with the lower end being attached and fixed to the rear end of the support portion 21. The upper end of the second support frame 22B is attached and fixed to the rear lower surface of the armrest portion 23.

[0020] The support frame 22 may be formed in a U-shape with an open top, and the support portion 21 may be inserted and fixed to the lower end (not shown) that extends in the front-rear direction. Similarly, the support frame 22 may be formed in a rectangular shape, and the armrest portion 23 may be fitted and fixed to the upper end (not shown) that extends in the front-rear direction.

[0021] The armrest portion 23 is a plate-like member that extends in the front-rear direction, bridging the gap between the first support frame 22A and the second support frame 22B, with the upper end of the support frame 22 fixed to its lower surface. The upper surface of the armrest portion 23 is formed flat to make it easier for the user to use as an armrest.

[0022] The cup holder 24 is a cylindrical member with an opening at the top, and is integrally molded with the front end of the armrest portion 23. The cup holder 24 is positioned slightly to one side (the left side in the illustrated example) of the center of the armrest 23. Therefore, the front end of the armrest 23 is curved to one side. This configuration can be seen in Figure 7.

[0023] With this configuration, even if chair connectors 20 are attached to both the left and right sides of the chair 10, and cup holders 24 are placed on both the left and right sides of the chair, the user of the chair 10 can intuitively understand which cup holder 24 on the left or right side they should use. To explain this in detail using the illustrated example, the left-right position of the cup holder 24 is offset to the left of the center. Therefore, when the user sits on the seat 11 of the chair 10, the right-hand cup holder 24 is positioned closer than the left-hand cup holder 24. This allows the user to recognize that the right-hand cup holder 24 is for their use. Refer to Figure 3 for this configuration.

[0024] The first connecting portion 30 has a groove 31 through which the lower leg portion 12c of the chair 10 is inserted, and a pressing portion 32 that presses against the lower leg portion 12c inserted into the groove 31. This configuration can be seen by referring to Figures 6 and 9.

[0025] The groove 31 is formed by creating a recess on both sides of the support portion 21, so as to be cut inward in the left-right direction. As a result, the groove 31 extends across the entire front-rear direction of the side surface of the support portion 21. Since the support portion 21 and the groove portion 31 are formed to be elongated in the front-to-back direction, the legs 12 of the chair 10 can be held in a more stable position.

[0026] The pressing portion 32 is an elastic member attached to a mounting hole 33 formed in the upper part of the groove portion 31. The mounting hole 33 is a vertical through hole formed between the upper surface of the support portion 21 and the upper surface of the groove portion 31, and a protrusion 34 for fixing the pressing portion 32 is formed in the middle of the vertical direction. The pressing portion 32 has a recess 32a formed in the protrusion 34 of the mounting hole 33, and a pressing surface 32b which is an inclined surface that slopes upward toward the left and right inner sides of the groove portion 31 and presses against the upper surface of the lower leg portion 12c inserted into the groove portion 31. This configuration can be seen in Figure 9.

[0027] With this configuration, when the lower leg portion 12c of the chair 10 is inserted into the first connecting portion 30, the elastic force of the pressing portion 32 automatically grips the lower leg portion 12c at an angle between the inner surface of the lower part of the groove portion 31. Therefore, the leg portion 12 of the chair 10 can be connected to the first connecting portion 30 smoothly and easily. Furthermore, the legs 12 of the chair 10 can be easily removed by a simple operation of pulling them out of the groove 31 against the elastic force of the pressing part 32.

[0028] The second connecting portion 40 is a long connecting piece that rotates around the second support frame 22B as an axis. On one longitudinal side of the second connecting portion 40 (the right side in the illustrated example), a mounting hole 41 is formed through which the second support frame 22B is rotatably inserted, by being fixed with screws or the like near the upper part of the second support frame 22B's midpoint in the vertical direction. A connecting recess 42 is formed on the rear surface of the other longitudinal side (left side in the illustrated example) of the second connecting portion 40, with the recess cut out toward the front. An elastic member 43 is provided on the inner surface of the connecting recess 42 to elastically clamp the leg portion 12 that fits into the connecting recess 42 in the left-right direction. Refer to Figures 4 and 10 for this configuration.

[0029] According to this configuration, the second connecting part 40 is detachably connected to the legs 12 of the chair 10 by fitting the left and right legs 12 of the chair 10, which is located on the left side of the chair connector 20, into the connecting recess 42. Specifically, the connecting recess 42 is formed so that the first backrest support part 12f and the second backrest support part 12e, which are provided side by side on the left and right, fit together simultaneously. In other words, the vertical position of the second connecting portion 40 is above the seat portion 11 and below the lower end of the central portion 13A of the backrest. This configuration can be seen in Figure 1.

[0030] The second connecting portion 40 is not limited to the above configuration, as long as it is capable of connecting the support frame 22 and the upper part of the leg portion 12 of the chair 10. Furthermore, the second connecting portion 40 may be configured to connect the second support frame 22B and the leg portion 12 of the chair 10 positioned to the right of the chair connector 20, or it may be configured to be connectable to the leg portions 12 of the chair 10 on both the left and right sides of the chair connector 20.

[0031] Furthermore, the chair 10 to which the chair connector 20 described above can be connected only needs to have a front-to-back member corresponding to the front-to-back lower leg portion 12c to which the first connecting portion 30 can be connected, and a vertical member corresponding to the first backrest support portion 12f and the second backrest support portion 12e to which the second connecting portion 40 can be connected, and is not limited to the chair 10 shown in this embodiment.

[0032] Next, a simple connector 15 attached to the lower leg portion 12c of the chair 10 will be described based on Figures 1 to 5. The simple connector 15 is a member formed in the shape of a rectangular parallelepiped and attached so as to be inserted through the lower leg portion 12c, and comprises a male connector 15A and a female connector 15B. The male connector 15A has protrusions that face outward on both sides. The female connector 15B has a recess into which the protrusions of the male connector 15A are fitted. The male connectors 15A are arranged front to back on one side of the chair 10 (the right side in the illustrated example), and the female connectors 15B are arranged front to back on the other side of the chair 10 (the left side in the illustrated example). Refer to Figure 5 for this configuration. The male connector 15A and the female connector 15B are attached to the lower leg portion 12c, so that the lower surfaces of the male connector 15A and the female connector 15B become the contact surface 16 of the chair. Refer to Figure 1 for this configuration.

[0033] According to this configuration, the chairs 10 can be detachably connected to each other without using chair connectors 20 by connecting the simple connectors 15, 15 of the chairs 10 that are arranged side by side. Specifically, the left and right chairs 10 can be connected by fitting a female connector 15B provided on the left lower leg portion 12c of the chair 10 arranged on the right side with a male connector 15A provided on the right lower leg portion 12c of the chair 10 arranged on the left side. In this case, since the lower legs 12c of the chairs 10 are connected in close proximity, there is no gap between the chairs 10, and no armrests or the like are provided between the chairs 10. Furthermore, the chair connector 20 of this embodiment is detachably attached between the front and rear simple connectors 15, 15 provided on the lower leg portion 12c.

[0034] According to the chair unit described above, the chair connector 20 can be connected to and disconnected from the chair 10 by simple operations such as inserting the legs 12 of the chair 10 into the first connecting part 30 and the second connecting part 40, or by pulling. By connecting the chair connector 20 to one side of the chair 10 (the left side in the illustrated example), the armrest 23 and cup holder 24 are positioned on the side of the chair 10, thereby improving the convenience of the chair 10.

[0035] Furthermore, the chair connector 20 can connect chairs placed side by side via first connecting parts 30, 30 provided on both the left and right sides of the support part 21. At this time, a predetermined space is provided between the chairs, and the armrest 23 and cup holder 24 can be placed in this space. This makes it easier and smoother to arrange the chairs 10 side by side while leaving a predetermined gap between them, and also improves the convenience of the chairs 10.

[0036] Furthermore, since the chair connector 20 is connected at least two points, upper and lower, to the lower end and upper part of the leg portion 12 of the chair 10 by the first connecting portion 30 and the second connecting portion 40, the chair connector 20, which is long in the vertical direction, can be connected to the side of the chair 10 in a stable and robust manner. In other words, the armrest portion 23 and cup holder 24 provided at the upper end of the support frame 22 which extends in the vertical direction can also be supported in a stable state.

[0037] Furthermore, as shown in Figures 2 and 5, when the first connecting portion 30 of the chair connector 20 is connected to the lower leg portion 12c, the support portion 21 is sandwiched in the front-to-back direction by a pair of simple connectors 15 provided on the lower leg portion 12c of the chair 10. This restricts the front-to-back displacement of the chair connector 20 connected to the chair 10, allowing the chair connector 20 to be connected to the side of the chair 10 in a stable and robust manner.

[0038] Furthermore, the contact surface 16 of the lower surface of the simple connector 15 to which the chair 10 makes contact with the ground, and the contact surface 21a of the support part 21 to which the chair connector 20 makes contact with the ground, are arranged on the same plane so that they make contact with the ground simultaneously when the chair connector 20 is connected to the chair 10. Furthermore, when a user sits on the chair, the support portion 21 of the chair connector 20 connected to the chair 10 is pressed downwards via the lower legs 12c of the chair 10. As a result, the contact surface 21a of the support portion 21 is pressed against the ground, making the chair connector 20 connected to the chair 10 more stable.

[0039] Furthermore, in a chair unit 1 in which at least two chairs 10, 10 are connected in the left-right direction via a chair connector 20, the first support frame 22A of the chair connector 20 and the front leg portion 12b of the chair 10 overlap substantially when viewed from the side, and the second support frame 22B of the chair connector 20 and the rear leg portion 12d, second backrest support portion 12e, and first backrest support portion 12f of the chair 10 overlap substantially. This configuration makes it easier to connect the chair connector 20 to the chair 10. In particular, it makes it easier to align the second connecting part 40 with the first backrest support part 12f and the second backrest support part 12e during connection work. It also improves the appearance of the chair unit 1. Refer to Figure 2 for this configuration.

[0040] Furthermore, the present invention is not limited to the embodiments described above, and can be modified, improved, etc., as appropriate.

[0041] As described above, the following matters are disclosed in this specification: (1) A support part in which the contact surface is formed, A support frame that extends in the vertical direction and whose lower end is fixed to the support portion, It has an armrest portion that extends in the front-rear direction and is provided at the upper end of the support frame, A chair connector that can be positioned on the left and right sides of a chair, The support portion is provided with a pair of first connecting portions on the left and right sides, to which a pair of legs extending downward from both the left and right ends of the seat of the chair are detachably connected. A second connecting portion is provided in the vertical middle of the support frame, to which the legs of the chair, which are positioned on at least one side (left or right), are connected. Chair connector. This configuration allows chairs placed side-by-side to be connected with a predetermined spacing between them using simple operations, without requiring any special modifications to the chairs themselves. Furthermore, the chair connector is designed to be attachable even when there are chairs on only one side, and the attached chair can be fitted with armrests on its sides to improve convenience.

[0042] (2) A cup holder is provided on the armrest, (1) The chair connector described above. This configuration improves the convenience of chairs to which chair connectors are attached.

[0043] (3) The cup holder is positioned at the front end of the armrest and at a position that is shifted to one side to the left or right of the center in the left-right direction. (2) The chair connector described above. With this configuration, when chair connectors are attached to both the left and right sides of the chair, the user of the chair will intuitively know which cup holder to use.

[0044] (4) The armrest extends in the front-rear direction so as to bridge the upper ends of the support frame, which are provided at the front and rear ends of the support portion, A chair connector as described in any one of (1) to (3). This configuration provides more stable support to the armrests.

[0045] (5) The second connecting portion connects to the leg portion above the seat portion, A chair connector as described in any one of (1) to (4). In this configuration, the chair connecting section, which is long in the vertical direction, is connected to the chair in a stable manner.

[0046] (6) The leg portion has a lower leg portion that extends in the front-rear direction on the lower end side, The first connecting portion has grooves that are recessed inward in the left-right direction from the left and right ends of the support portion and extend in the front-rear direction, and a pressing portion that elastically presses the lower leg portion inserted into the grooves. A chair connector as described in any one of (1) to (5). This configuration makes it easier to connect and disconnect the first connecting part from the chair.

[0047] (7) A chair having a seat, a backrest, and a pair of legs to which the seat and the backrest are attached, The chair has chair connectors as described in (1) to (6) arranged on the left and right sides of the chair, Chair unit. This configuration allows chairs placed side-by-side to be connected with a predetermined distance between them using simple operations. Furthermore, the chair connector is designed to be attachable even when there are chairs on only one side, and the attached chair can be fitted with armrests on its sides to improve convenience.

[0048] (8) The leg portion has a lower leg portion that extends in the front-rear direction on the lower end side, The left and right lower legs are provided with a male connecting portion having a projection and a female connecting portion having a recess into which the male connecting portion fits, arranged front to back with the support portion in between. The male and female connecting parts are detachably fitted to the female and male connecting parts provided on the chairs, which are arranged adjacent to each other on the left and right sides, and have a ground surface that makes contact with the ground surface of the support part at the same time as the ground surface. (7) The chair unit described above. According to this configuration, when the first connector is connected to the front and rear frame sections, the support section is clamped in the front-to-back direction by the male and female connector sections, thereby restricting the front-to-back movement of the support section. As a result, the chair connector connected to the chair becomes stable. Furthermore, it becomes possible to connect chairs directly to each other without using chair connectors. [Explanation of Symbols]

[0049] 1 chair unit 10 chairs 11 Seat area 12 Legs 12a Seat support 12b Front leg 12c lower leg 12d Hind leg 12e Second backrest support section 12f First backrest support section 13 Backrest 13A Center of the backrest 13B Lower part of the backrest 15 Simple connector 15A male coupling 15B Female connector 16 Ground plane 21 Support part 21a Ground plane 20 Chair connectors 22 Support frame 22A First support frame 22B Second support frame 23. Armrest 24 Cup Holder 30 1st connection part 31 Groove 32 Pressing part 32a Recess 32b Pressing surface 33 mounting holes 34 Convex part 40 2nd connection part 41 mounting holes 42 Connecting recess

Claims

1. A support part in which the contact surface is formed, A support frame that extends in the vertical direction and whose lower end is fixed to the support portion, It has an armrest portion that extends in the front-rear direction and is provided at the upper end of the support frame, A chair connector that can be positioned on the left and right sides of a chair, The support portion is provided with a pair of first connecting portions on the left and right sides, to which a pair of legs extending downward from both the left and right ends of the seat of the chair are detachably connected. A second connecting portion is provided in the vertical middle of the support frame, to which the legs of the chair, which are located on at least one side (left or right), are connected. The support portion is formed in a block shape that is long in the front-rear direction, and the contact surface is formed on the entire lower surface. Chair connector.

2. A cup holder is provided on the aforementioned armrest. The chair connector according to claim 1.

3. The cup holder is positioned at the front end of the armrest and at a location slightly to the left or right of the center in the left-right direction. The chair connector according to claim 2.

4. The aforementioned armrest extends in the front-rear direction so as to bridge the upper ends of the support frames, which are provided at the front and rear ends of the support portion, respectively. The chair connector according to claim 1.

5. The second connecting portion connects to the leg portion above the seat portion. The chair connector according to claim 1.

6. A support portion in which a contact surface is formed, A support frame that extends in the vertical direction and whose lower end is fixed to the support portion, It has an armrest portion that extends in the front-rear direction and is provided at the upper end of the support frame, A chair connector that can be positioned on the left and right sides of a chair, The support portion is provided with a pair of first connecting portions on the left and right sides, to which a pair of legs extending downward from both the left and right ends of the seat of the chair are detachably connected. A second connecting portion is provided in the vertical middle of the support frame, to which the legs of the chair, which are located on at least one side (left or right), are connected. The leg portion has a lower leg portion that extends in the front-rear direction on the lower end side, The first connecting portion has grooves recessed inward in the left-right direction from the left and right ends of the support portion and extending in the front-rear direction, and a pressing portion that elastically presses the lower leg portion inserted into the grooves. Chair connector.

7. A chair having a seat, a backrest, and a pair of legs to which the seat and backrest are attached, The chair has chair connectors positioned on the left and right sides of the chair, The aforementioned chair connector is A support part in which the contact surface is formed, A support frame that extends in the vertical direction and whose lower end is fixed to the support portion, It has an armrest portion that extends in the front-rear direction and is provided at the upper end of the support frame, A chair connector that can be positioned on the left and right sides of a chair, The support portion is provided with a pair of first connecting portions on the left and right sides, to which a pair of legs extending downward from both the left and right ends of the seat of the chair are detachably connected. A second connecting portion is provided in the vertical middle of the support frame, to which the legs of the chair, which are located on at least one side (left or right), are connected. The leg portion has a lower leg portion that extends in the front-rear direction on the lower end side, The left and right lower legs are provided with a male connecting portion having a projection and a female connecting portion having a recess into which the male connecting portion fits, arranged front to back with the support portion in between. The male and female connecting parts are detachably fitted to the female and male connecting parts provided on the chairs, which are arranged adjacent to each other on the left and right sides, and have a ground surface that makes contact with the ground surface of the support part at the same time as the ground surface. Chair unit.

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