JP2015085104A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair that enables an article to be easily loaded into/unloaded from an article loading part, provided in a leg, from multidirections.SOLUTION: A chair leg 10 comprises a base 31, and a stud 32 that rises from a horizontal central part of the rear part of the base 31 and that can support a seat. An article loading plate 38, which is an article loading part, is provided on the base 31 so that the article can be loaded into/unloaded from an area except the stud 32 below the seat.

Description

  The present invention relates to a chair that includes a leg, a seat supported by the leg, and an article placement section provided on the leg, and in particular, allows easy loading and unloading of articles to and from the article placement section.

  For example, as described in Patent Documents 1 to 3, a chair provided with a shelf on which an article is placed on a leg below a seat is known. When a chair having such a shelf is used in a lecture room or the like, it is convenient because articles such as baggage can be temporarily placed on the shelf during the course.

Japanese Utility Model Publication No. 41-20034 Japanese Utility Model Publication No. 57-99460 Japanese Patent No. 4323264

  In each of the chairs described in Patent Documents 1 to 3, the legs that support the seat are provided with four front and rear, right and left pedestals, and the shelf is provided with four pedestals below the seat. Alternatively, it is supported by two left and right leg columns so as to be surrounded by four leg columns. For this reason, there are problems that the four pedestals become obstacles, the direction in which the articles are put in and out of the shelf is restricted, and a large article cannot be smoothly put in and out of the shelf.

  The present invention has been made in view of the above-described problems, and allows an article to be easily taken in and out of an article placement portion provided on a leg from multiple directions, and has a wide article accommodation space below the seat. The purpose is to provide a chair that can be secured.

According to the present invention, the above-mentioned problems are solved as follows.
(1) In a chair comprising a leg, a seat supported by the leg, and an article placement section provided on the leg, the leg includes a base and a front part, a rear part or a front part and a rear part of the base. A pedestal that stands up from the center in the left-right direction in both, and can support the seat, so that the article placement part can take in and out the article from the area excluding the pedestal below the seat. , Provided at appropriate positions on the legs.

  According to such a configuration, the pedestal is erected from the center part in the left-right direction at the front part of the base, the rear part or both the front part and the rear part, and the article placement part is provided on the leg below the seat. In the lower part of the seat, the left and right directions are completely opened, and only the central part in the left and right direction is closed by the pedestal in the front or rear, and a wide article storage space is secured in which both sides are opened. As a result, unlike conventional chairs that support the shelf so that it is surrounded by four pedestals, the direction in which the article is put in and out of the shelf is not restricted, and the article is placed on the article placement section. Since it can be easily taken in and out from the direction, usability of the article placement portion is improved.

(2) In the above item (1), the article placement section is an article placement plate supported by a base.

According to such a configuration, since the seat and the article placement plate are greatly separated from each other, a wide article accommodation space is formed below the seat. As a result, even an article having a large vertical dimension can be easily put in and out of the article placing plate.
In addition, since the article placement plate is supported by the base of the legs, even an article having a large mass can be placed stably, and the article placement plate is prevented from being deformed.
Furthermore, since an article placement board having a large placement area can be mounted in accordance with the size of the base, the usability of the article placement board is further improved.

(3) In the above item (2), the base is formed by bending one saddle member into a loop shape in plan view, and the article mounting plate is fitted to the loop base member from above. Support together.

  According to such a configuration, the article placement plate can be easily attached to the base, and the article placement plate is less likely to be displaced with respect to the base.

(4) In the above item (3), a fitting portion is provided on the lower surface of the outer peripheral portion of the article placing plate to be fitted and locked to the lower portion of the outer peripheral surface of the saddle member from the inside.

  According to such a configuration, the article placement plate is prevented from coming off from the base.

(5) In the above item (3) or (4), the saddle member bent in a loop shape is terminated at the center of the front or rear part of the base in the left-right direction. The left and right two upward saddle members extending upward are defined as pedestals.

  With such a configuration, it is possible to form a pedestal that is integrated with the base simply by extending the ridge material forming the base further upward, so that the pedestal can be separately manufactured or fixed to the base. It is not necessary to attach with. As a result, the number of parts and the number of assembling steps are reduced, so that the cost can be reduced.

(6) In the above item (5), the left and right two upward facing members that form the pedestal are extended from the upper end further forward or backward to support the seat on the upper end of the pedestal. A seat support rod will be installed.

According to such a configuration, it is possible to form the seat support rod by simply extending the saddle material forming the pedestal from the upper end further forward or rearward. There is no need to attach the pedestal with a fixing means. As a result, the number of parts and the number of assembling steps are reduced, so that the cost can be reduced. In particular, when the base, the pedestal, and the seat support rod are integrally formed from a single saddle member, the cost can be further reduced.
In addition, the seat support rod extends from the upper end of the pedestal to the front or rear, so that the seat support rod may be an obstacle to putting in or taking out articles, or the article storage space below the seat may be narrowed. There is no.

(7) In any one of the above items (1) to (6), the seat has a seat frame that reinforces the front portion and the left and right side portions at the lower portion thereof, and both left and right ends coupled to both side portions of the seat frame. It shall be provided with the connection member of the left-right direction.

  According to such a configuration, the seat is reinforced by the seat frame and the connecting member, and the seat is prevented from being excessively bent downward due to the load when seated, so the article accommodation space below the seat is narrowed. There is nothing, and the usability of the article placement section is improved.

(8) In the above item (7) subordinate to the above item (6), the seat support rod is provided with a seat mounting member facing in the left-right direction, and the seat mounting member is fixed to the connecting member, whereby the seat left-right direction Is supported by the seat support rod.

  According to such a configuration, since the central portion of the seat is prevented from being excessively bent downward, the article accommodation space below the seat is not narrowed, and the usability of the article placement portion is further improved.

(9) In any one of the above items (1) to (8), the base is moved in the front-rear direction to the slide mechanism provided on the floor surface so as to approach and separate from the furniture with the top plate installed on the floor surface. The pedestal is erected from the center of the rear part of the base in the left-right direction.

  According to such a configuration, since the pedestal stands up from the central part in the left and right direction of the rear part of the base, even if the entire chair including the base moves forward and approaches the top plate of the furniture, Since the article can be taken in and out from the left and right sides and obliquely backward from the article placement section, the entry and removal of the article to and from the article placement section is not greatly hindered by the furniture.

  ADVANTAGE OF THE INVENTION According to this invention, the chair which enabled it to carry out the taking-in / out of goods to the article mounting part provided in the leg from multiple directions easily can be provided.

It is a side view which shows one embodiment of the chair of this invention with the desk arrange | positioned in the back and front, The state in which the seat is located in the front limit of a movable range is a solid line, and it is similarly located in an intermediate position and a rear limit. Is shown by a two-dot chain line. It is a side view when the seat in one embodiment of the chair of the present invention is located in an intermediate position. Similarly, it is a side view when the seat is located at the rear limit. It is a disassembled perspective view of the chair of this invention. It is the perspective view which looked at the chair of this invention when a seat is located in a rear limit from diagonally forward upper direction. It is the perspective view which looked at the chair when a seat is located in the back limit from diagonally forward lower part. It is the perspective view which looked at the movable plate and gas spring in a slide mechanism from diagonally forward lower side. It is the perspective view which looked at the stationary plate and gas spring in a slide mechanism from diagonally upward. It is the IX-IX line expansion vertical front view of FIG. It is the perspective view which looked at the article mounting board from diagonally upward. It is the perspective view which looked at the article mounting board from diagonally forward and lower. It is a bottom view of the base and the movable plate in the slide mechanism. FIG. 13 is a vertical sectional view taken along line XIII-XIII in FIG. 12. It is the XIV-XIV line longitudinal cross-sectional view of FIG. FIG. 5 is a cross-sectional bottom view taken along the line XV-XV in FIG. 2. It is the XVI-XVI line longitudinal cross-sectional view of FIG. It is the XVII-XVII line longitudinal cross-sectional view of FIG. It is an enlarged view of the A section of FIG. It is a disassembled perspective view of the seat except a seat frame. It is the perspective view which looked at the cover member from diagonally downward.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a side view showing an embodiment of the chair of the present invention together with desks arranged before and after the chair.
As shown in FIG. 1, a plurality of desks (furniture with a top plate) 4 having a horizontally long top plate 3 provided on the upper end of a fixed leg 2 on a floor 1 such as a lecture room are spaced apart in the front-rear direction. A plurality of chairs 5 (only one of which is shown in the figure) are arranged on the floor surface 1 between the desks 4 and 4 adjacent to each other in the front-rear direction, and are arranged so as to be movable in the front-rear direction. ing.

In FIG. 1, a state where the seat 6 of the chair 5 is located at the front limit is indicated by a solid line, and a state where the seat 6 is also located at the middle position and the rear limit is indicated by a two-dot chain line.
FIG. 2 is a side view of the chair with the seat 6 positioned at the intermediate position, and FIG. 3 is a side view of the chair with the seat 6 positioned at the rear limit.

Next, the specific structure of the chair 5 will be described in detail with reference to all the drawings.
The chair 5 includes a slide mechanism 9 in which a movable plate (movable member) 8 can move substantially in the front-rear direction with respect to a fixed plate (fixed member) 7 fixed to the floor surface 1, and the movable plate 8 of the slide mechanism 9. A leg 10 provided above, the seat 6 supported on the leg 10, and a backrest 11 provided integrally with the seat 6 so as to stand up from the rear end of the seat 6 are provided.

  As shown in FIGS. 4 to 9, the slide mechanism 9 has a circular arc shape in a side view in which a central portion is recessed downward in front and rear portions of a pair of left and right side plates 12 and 12 erected on both sides of the fixed plate 7. The guide grooves 13 and 14 are provided, and the front and rear guide grooves 13 and 14 are pivotally attached to the outer surfaces of a pair of left and right side plates 15 and 15 depending from both sides of the movable plate 8 with a shaft 16 facing in the left and right direction. The guide rollers 17 and 18 are fitted. The guide rollers 17 and 18 may be simple guide pins.

  As shown in FIG. 2, the front and rear guide grooves 13 and 14 provided on the side plates 12 and 12 are configured so that the seat 6 is located at an intermediate position and the guide rollers 17 and 18 are front and rear of the guide grooves 13 and 14. As shown by the solid line in FIG. 1, when the seat 6 moves toward the front limit from the position in the middle position in the direction, the front guide roller 17 is almost level with the middle position or As shown in FIG. 3, it is guided by the guide grooves 13 and 14 so that the rear guide roller 18 is located at the lower position and at the upper position as compared with the intermediate position, and the seat 6 is located at the intermediate position. When the seat 6 moves toward the rear limit, the front guide roller 17 is positioned higher than the intermediate position, and the rear guide roller 18 is approximately equal or lower than the intermediate position. It is like that.

The sliding mechanism 9 has a momentary center when the movable plate 8 is moved in the front-rear direction positioned below the floor surface 1, and the movable plate 8 draws an upwardly convex gentle arc in the front-rear direction in a side view. The shapes of the guide grooves 13 and 14 are determined so as to be guided.
The shape of the guide grooves 13 and 14 is not limited to the circular arc shape in a side view in which the central portion is recessed downward. For example, the front guide groove 13 is inclined in a downward direction from the central part, and has a mountain shape in which the rear part is substantially horizontal from the central part or an arc shape in a side view projecting upward from the central part, and the rear guide groove 14 is It is also possible to form a mountain shape in which the front part is substantially horizontal from the central part and the rear part inclines downward from the central part or an arc shape in side view in which the central part protrudes upward.

  Furthermore, the guide grooves 13 and 14 can be provided on the side plates 15 and 15 of the movable plate 8, and the guide rollers 17 and 18 can be provided on the side plates 12 and 12 of the fixed plate 7.

The guide grooves 13 and 14 are preferably provided with guide bushes 13a and 14a for smoothly guiding the guide rollers 17 and 18. In this embodiment, the guide bushes 13a and 14a are attached to the inner surfaces of both side plates 12 and 12 of the fixed plate 7, and the side plate 12 and the outer surface of the side plate 15 of the movable plate 8 inside thereof are directly slid. It is provided integrally with the sliding plate 12a for preventing this (see FIGS. 4, 8, and 9).
The sliding plate 12 a is attached to the side plate 12 by engaging and locking the upward or downward locking claws 12 b in the engaging holes 22 provided in the side plates 12.

A rear end portion of a gas spring 19 acting as a compression spring is pivotally attached to a bracket 20 fixed to a rear portion between the left and right side plates 12 and 12 of the fixed plate 7 with a shaft 20a facing in the left-right direction.
A front end portion of the gas spring 19 is pivotally attached to a bracket 21 fixed to a front portion between the left and right side plates 15 and 15 of the movable plate 8 with a shaft 21a facing in the left-right direction.
By this gas spring 19, the movable plate 8 and eventually the seat 6 are constantly urged toward the front limit, and when the chair 5 is not used, the seat 6 is moved to the front limit close to the top plate 3 of the desk 4. Thus, a space through which a person can pass can be formed behind the chair 5.

By this slide mechanism 9, the seat 6 and the backrest 11 are stopped in the forefront of the desk 4 close to the rear edge of the top plate 3 when not in use, but by pulling the backrest 11 backward, The guide rollers 17 and 18 move rearward along the front and rear guide grooves 13 and 14, and in the state where the instantaneous center is located below the floor surface 1, draw an upward convex gentle arc to the rear. It can be rotated.
The seated person can easily sit up or stand up at the end when the guide rollers 17 and 18 abut against the rear ends of the guide grooves 13 and 14.
After leaving the seat, when the hand is released from the backrest 11, the seat 6 and the backrest 11 are returned to the original limit by following the same trajectory reversely by the biasing force of the gas spring 19.
The movement of the seat 6 and the backrest 11 at this time is the same as the movement of the rocking chair, and the movement trajectory in the front-rear direction of the seat faces the left-right direction in which the seat and the leg are provided on the support body integrated with the floor surface. An arc that is gentler than the turning trajectory in the front-rear direction of the seat in a conventional chair that is turned around the pivot axis is drawn. At this time, the front and rear guide rollers 17 and 18 move in an upwardly convex gentle arc with the instantaneous center positioned below the floor surface 1 on which the seated person's foot is placed as described above. To do.
Accordingly, when sitting, the seated person can pull out the back 11 and the seat 6 in a direction away from the top board 3 with a slight force, and can also sit on the buttocks and the heel after sitting. The slide mechanism 9 can be operated and the integrated seat 6, leg 10, and backrest 11 can be moved to desired positions in the front-rear direction by moving the upper body slightly back and forth without putting it in. The seating feeling and usability when moving the seat 6 back and forth can be improved.

  Portions outside the left and right side plates 12 and 12 of the fixed plate 7 are covered with a detachable cover (not shown). However, this is not directly related to the present invention, and detailed description thereof is omitted.

  The rear portion of the movable plate 8 expands in a dovetail shape on both sides together with the side plates 15 and 15, and a horizontally-long rectangular cut hole 8 a is provided in the central portion of the rear edge.

  At the front and rear ends of the movable plate 8, the front and rear ends of a loop-shaped saddle member 33 that constitutes the base 31 of the leg 10, which will be described later, are placed from above and fixed by welding.

  As shown in FIG. 4, the above-described leg 10 includes a base 31 and a pedestal (leg member) 32 that stands up from the center in the left-right direction at the rear part. The base 31 is formed by bending a single brazing material 33 made of a metal pipe into a substantially square loop shape in plan view.

  The saddle member 33 that is bent in a loop shape terminates at the center of the rear portion of the base 31 in the left-right direction. The above-mentioned pedestal 32 made of the upward facing members 34, 34 is formed so as to be integrated with the base 31. In this example, the opposing surfaces of the left and right upward facing members 34 are in contact with each other, but may be slightly separated from each other.

  At the upper end of the pedestal 32, left and right upward saddle members 34 are bent and extended at the upper end so as to be substantially horizontal toward the front, whereby two left and right forward saddle members 35 are provided. , 35 is formed so as to be integrated with the base 31 and the pedestal 32. The opening hole at the front end of both forward facing members 35 is closed by a cap 37.

An article placement plate 38 made of synthetic resin is attached to the base 31 of the leg 10 as follows.
As shown in FIGS. 4, 5, and 10 to 14, the article placement plate 38 has a substantially rectangular plate shape in plan view, which is the same shape as the base 31, and is fitted to the loop-shaped brim member 33 from above. Thus, the lower surface of the outer peripheral portion is supported by the inner peripheral surface of the upper portion of the loop-shaped brazing member 33 of the base 31. The upper surface excluding the outer peripheral portion of the article placing plate 38 is recessed in a shallow dish shape so as to become deeper toward the rear.

A pair of left and right fittings that can be fitted to the inner peripheral surface of the front brace 33a facing in the left-right direction, with the lower portion curved in a circular arc toward the front, on the lower surface of the front end portion of the article placement plate 38 The pieces 39 and 39 are projected downward. An elastic engagement piece 40 protrudes downward from the center of the rear edge of the article placing plate 38 in the left-right direction, and a pair of left and right engaging claws 40a, 40a protrude from the lower end of the elastic engagement piece 40. Has been.
As shown in FIGS. 11 and 12, the lower surface of the left and right side portions of the article placement plate 38 is fitted from above to the opposing surfaces of the side flange members 33b and 33b in the front-rear direction of the loop-shaped flange member 33. Accordingly, positioning pieces 41 and 41 for positioning the article placement plate 38 in the left-right direction are provided so as to protrude downward.

  In order to mount the article placement plate 38 to the base 31, as shown in FIG. 13, first, the article placement plate 38 is held in the front-down shape by hand, and the front end of the article placement plate 38 is the upper surface of the front saddle member 33a. The left and right fitting pieces 39 are fitted to the inner peripheral surface of the front brim member 33a from above.

Next, as shown in FIG. 14, while the article placement plate 38 is flattened, the rear end thereof is brought into contact with the upper surface of the rear saddle member 33c, and the left and right positioning pieces 41 and 41 are placed on the side saddle members 33b and 33b. The elastic engagement piece 40 is pushed down along the inner surface of the rear saddle member 33c while being slidably contacted with the opposite surface, and the elastic engagement piece 40 is passed through the cut hole 8a provided at the rear end of the movable plate 8, The left and right engaging claws 40a are elastically engaged with the lower surface of the rear edge of the movable plate 8.
As a result, the article placement plate 38 is mounted on the upper portion of the base 31 while being prevented from being displaced in the front-rear and left-right directions and prevented from coming off upward. Since the base 31 is formed by bending a single brazing material 33 into a substantially square loop shape in plan view, the article mounting plate 38 can be easily mounted in the manner described above, and the top surface The shape of the concaved portion can prevent a small article from falling.

  In this way, the pedestal 32 is raised from the central portion of the rear portion of the base 31 in the left-right direction, and the article placement plate 38 is mounted on the upper portion of the base 31. Is fully opened, and at the rear, only the central part in the left-right direction is closed by the pedestal 32, and a wide article storage space S is secured in which both sides thereof are open. As a result, even an article having a large vertical dimension can be easily put in and out of the article placing plate 38 from many directions including obliquely rearward without being obstructed by the pedestal 32, so that the article placing plate 38 is easy to use. improves.

Further, since the entire article placing plate 38 is supported by the base 31 of the leg 10, even an article having a large mass can be placed stably, and the article placing plate 38 is also prevented from being deformed. The
Furthermore, since the article placement plate 38 having a large placement area can be mounted corresponding to the size of the base 31, the usability of the article placement plate 38 is further improved.

  Since the base 31, the pedestal 32, and the seat support rod 36 are integrally formed by bending a single flange member 33 made of a metal pipe, they are individually manufactured by separate members and coupled to each other. It is not necessary to reduce the number of parts and the number of assembling steps, thereby reducing the cost.

Next, the structure of the seat 6 and the mounting structure of the surface member on the surface (upper surface) will be described in detail with reference to FIGS. In addition, the upper part of FIG. 15 is before the seat, and the lower part is after the seat.
The seat 6 serving as a load receiving member includes a metal pipe-like seat frame 50 having a substantially backward U shape in a bottom view, a front frame 50a facing left and right in the seat frame 50, and left and right side frames 50b and 50b. The substrate 51 made of a hard synthetic resin having a substantially square shape in plan view, with the lower surfaces of the first and second sides supported, a cushion material 52 such as urethane placed on the upper surface of the substrate 51, and a cushion on the upper surface of the substrate 51 And a cover member 53 having elasticity, which is made of an elastomer or the like, attached so as to cover the material 52.

  The front end portions and the rear end portions of the left and right side frames 50b are connected to each other by fixing both end portions of the connecting plates 54, 54 facing the left and right directions to their lower surfaces by welding. The connecting plate 54 increases the torsional rigidity of the seat frame 50 (see FIG. 6).

  On the lower surface of the front and rear connecting plates 54, bolts 56, 56 inserted into the left and right ends of seat mounting members 55, 55 for mounting the seat 6 to the seat support rod 36 from below are connected to the upper surface of the connecting plate 54. These are fixed by screwing them into the welding nuts 57, 57 (see FIG. 17).

  An embossed portion 58 that bulges downward is formed on the seat mounting members 55, 55 except for both left and right end portions, and an upward concave portion 59 is formed on the lower surface of the center portion of the embossed portion 58 in the left-right direction. Each is formed. By fitting the upper half of the seat support rod 36 of the above-described leg 10 into the upward recess 59 of the front and rear seat mounting members 55 and welding and fixing them, the entire seat 6 including the board 51 is secured in the left-right direction. The central portion is supported by a seat support rod 36 (see FIG. 6). The seat 6 is substantially cantilevered by the pedestal 32.

  As shown in FIGS. 16 and 17, the substrate 51 has an arcuate cross section that is curved so that the central portion is gently recessed downward, and the left and right side portions are folded so as to form a downward U-shaped cross section. By bending, upward and downward grooves 60, 60 are formed on both the left and right sides so as to face in the front-rear direction and open downward. By fitting the left and right concave grooves 60 on the left and right side frames 50b of the seat frame 50 from above, the lower surfaces of both sides of the substrate 51 are positioned and supported in the left and right directions by the left and right side frames 50b. Has been. The front end portion of the substrate 51 is slightly bent in a front-lowering manner, and the lower surface slightly behind the portion is supported by the front frame 50 a of the seat frame 50.

  As shown in FIG. 17, the substrate 51 supported by the seat frame 50 is fixed to the upper surfaces of the front and rear connecting plates 54 by a plurality of bolts 61. In addition, upward backrest support rods 50c, 50c are connected to the rear ends of the side frames 50b, 50b in the seat frame 50, and the left and right sides of the backrest 11 are connected to the left and right backrest support rods 50c. The backrest 11 is supported by the seat frame 50 by fitting and fixing from above (see FIG. 2).

  An insertion groove 62 having a concave cross section that opens to the front surface side (upward) is formed in a portion inward of the outer peripheral edge of the substrate 51 so as to be continuous in a substantially square shape in plan view in the circumferential direction. . The left and right sides of the insertion groove 62 are positioned inwardly of the left and right side frames 50b and the recessed groove 60, and the front side is positioned slightly forward of the front frame 50a. The cushion material 52 described above is sized to be placed inwardly surrounded by the insertion groove 62.

  The cover member 53 has a substantially square shape in plan view that is slightly smaller than the size of the substrate 51. As shown in the bottom views of FIGS. 16 to 18 and FIG. An insertion piece 63 facing the direction of the substrate 51 that can be fitted from above is provided so as to be continuous in the circumferential direction. The protrusion dimension of the insertion piece 63 from the back surface of the cover member 53 is larger than the depth of the insertion groove 62, and when the insertion piece 63 is fitted into the insertion groove 62 as described later, Protrudes above the insertion groove 62. The cushion material 52 is accommodated in the inner side surrounded by the insertion piece 63.

  A closing piece 64 as a closing portion that is bent toward the surface of the substrate 51 is connected to the outer peripheral end of the cover member 53 outside the insertion piece 63. The front end (lower end) of the closing piece 64 is in contact with or close to the surface of the outer peripheral portion of the substrate 51 when the cover member 53 is attached to the substrate 51 in the manner described later.

As shown in FIGS. 16 and 18 to 20, the front and rear, left and right insertion pieces 63 of the cover member 53 are made of a hard synthetic resin having four vertical dimensions shorter than that of the insertion piece 63. The reinforcing piece 65 is attached as follows.
A plurality of attachment holes 66 are formed in the front and rear, left and right insertion pieces 63 in the circumferential direction, and a plurality of protrusions 67 projecting from the outer surface of each reinforcing piece 65 are provided in the attachment holes 66. By press-fitting from one side, each reinforcing piece 65 is attached to the inner surface of the front and rear, left and right insertion pieces 63 so as to overlap with the lower part thereof. In contrast to the above, the reinforcement piece 65 may be attached to the insertion piece 63 by press-fitting a protrusion protruding from the insertion piece 63 into the attachment hole provided in the reinforcement piece 65.

On the lower edge of each reinforcing piece 65, a plurality (three) of elastic engaging pieces 68 having inward engaging protrusions 68a are provided so as to protrude downward. The cross-sectional shape of each elastic engagement piece 68 is tapered.
An elastic engagement piece 68 that opens downward and inward is fitted to the bottom wall of the insertion groove 62 of the substrate 51 that faces each elastic engagement piece 68 except for a portion that faces the insertion piece 63. An opening 69 is formed, and the lower end of the inner opening of the opening 69, that is, the lower end of the outer peripheral portion of the substrate 51 continuous with the inner inner surface of the insertion groove 62 is the upper end of the engaging projection 68a. The engaging step 70 is engageable.

  In order to attach the cover member 53 to the surface of the substrate 51, the cushion material 52 is accommodated and held inside the insert member 63 of the cover member 53, and then, as shown in FIG. The insertion piece 63 and the reinforcing piece 65 attached thereto are fitted from above into the insertion groove 62 of 51, and each elastic engagement piece 68 at the lower edge of the reinforcement piece 65 is opened at the lower part of the insertion groove 62. The engaging projection 68 a is elastically engaged with the locking step portion 70 while being fitted into the portion 69 and penetrating. At this time, since the protruding dimension of the insertion piece 63 is larger than the depth of the insertion groove 62, the upper half of the insertion piece 63 protrudes above the insertion groove 62.

  Accordingly, the cover member 53 is fixed to the surface of the substrate 51 in a state where the cushion material 52 is accommodated between the opposing surfaces of the substrate 51 and the cover member 53, and the closing piece 64 on the outer peripheral portion of the cover member 53 is also provided. Since the tip of this is in contact with or close to the surface of the outer peripheral portion of the substrate 51, the insertion groove 62 and the insertion piece 63 are not exposed. Note that when the insertion piece 63 is fitted into the insertion groove 62 and the elastic engagement piece 68 is engaged with the locking step portion 70, the closing piece 64 may be elastically deformed upward. In order to do this, the depth of the insertion groove 62 may be increased, or the protruding dimension of the closing piece 63 may be increased.

As described above, when the closing piece 64 is elastically deformed upward, the front end of the closing piece 64 is not separated from the surface of the substrate 51 even when the cover member 53 is bent downward at the time of seating. Since it comes into contact with the surface, no gap is formed on the contact surface with the substrate 51.
Further, since an upward reaction force acts on the insertion piece 63 and the elastic engagement piece 68, the engagement protrusion 68 a is less likely to come off from the locking step portion 70.

  The front portion and the left and right side portions of the base plate 51 of the seat 6 are supported by a seat frame 50 having a rearward U shape that supports the lower surface thereof, and the lower portion of the central portion is supported by the lower surface. The side frames 50b and 50b are respectively reinforced by front and rear connecting plates 54 and 54 having both ends coupled thereto, and the lower surface of the central portion of the substrate 51 in the left-right direction is substantially supported by a seat support rod 55. Therefore, the entire seat 6 including the substrate 51 is prevented from being excessively bent downward due to the load when seated. Therefore, the article storage space S below the seat 6 is not narrowed, and the usability of the article placement plate 57 attached to the base 31 is not hindered.

  According to the mounting structure of the cover member 53 of the above-described embodiment, the insertion groove 62 formed on the outer peripheral portion of the substrate 51 and the insertion piece 63 fitted thereto are more outward than the insertion piece 63 in the cover member 53. The plug 63 is covered with the closing piece 64 provided on the outer peripheral portion and is not exposed to the outside. Therefore, there is no possibility that the plug 63 is pulled out of the plug groove 62 due to mischief or the like. Moreover, since the engagement protrusion 68a of the elastic engagement piece 68 of the reinforcing piece 65 attached to the insertion piece 63 is engaged with the locking step 70 of the lower end of the opening 69 in the substrate 51, it is removed separately. Even if the stop member is not provided, there is no possibility that the insertion piece 63 is detached from the insertion groove 62 due to the parallax.

  Moreover, since the upper half part of the insertion piece 63 protrudes above the insertion groove | channel 62, the protrusion part of the insertion piece 63 also becomes easy to elastically deform inward at the time of seating. As a result, the flexibility of the outer peripheral portion of the cover member 53 is not hindered, and the entire cover member 53 is elastically deformed, so that a flexible seating feeling is obtained.

  Furthermore, since the reinforcing piece 65 is attached to the insertion piece 63 to form a double structure, and the overlapping portion thereof is fitted into the insertion groove 62, the insertion piece 63 is fitted into the insertion groove 62. The strength is increased, the insertion piece 63 can be stably held in the insertion groove 62, and even if the insertion piece 63 is greatly elastically deformed inward, there is no possibility that it will be detached from the insertion groove 62. .

  In addition, although the chair of the said embodiment shall be provided with the slide mechanism 9, such a slide mechanism 9 is abbreviate | omitted and the base 31 of the leg 10 is directly fixed to a floor surface, or it is made to contact the floor. May be.

  Moreover, in the said embodiment, although the pedestal 32 was erected from the center part of the rear part of the base 31 in the left-right direction, it may be erected from the center part of the front part of the base 31 in the left-right direction. . At this time, the collar member 33 bent in a loop shape is terminated at the center of the front portion of the base 31 in the left-right direction, and at the end, the left and right collar members 33 are further extended upward to form a pedestal. 32 may be formed. In this case, at the upper end of the pedestal 32, the left and right upward saddle members 34 may be further extended rearward to form the seat support rods 36 facing rearward. Moreover, although the leg 10 of the said embodiment is formed by bending a single pipe, it may be a leg bent after welding a plurality of pipes in place. .

  Furthermore, the base 31 is formed of, for example, a rectangular plate material, and a pedestal 32 is erected at the front portion, the rear portion, or the central portion in the left-right direction at both the front portion and the rear portion. 36 may be fixed. When the pedestal columns 32 are erected on both the front and rear portions of the base 31, the seat support rods 36 may be provided so that the upper ends of both the pedestal columns 32 are coupled to each other. When the base 31 is formed of a rectangular plate material, the upper surface of the base 31 can be used as an article placement portion as it is, but the above article placement plate 38 is provided on the upper surface of the base 31. May be.

  In the above embodiment, the article placement plate 38 is attached to the base 31, but the article placement plate 38 may be attached to the lower part of the pedestal 32.

DESCRIPTION OF SYMBOLS 1 Floor surface 2 Fixed leg 3 Top plate 4 Desk 5 Chair 6 Seat 7 Fixed plate 8 Movable plate 8a Cut hole 9 Slide mechanism 10 Leg 11 Backrest 12 Side plate 12a Sliding plate 12b Sliding claw 13, 14 Guide grooves 13a, 14a Guide bush 15 Side plate 16 Shaft 17, 18 Guide roller 19 Gas spring 20, 21 Bracket 20 a, 21 a Shaft 22 Engagement hole 31 Base 32 Pillar 33 Base material 33 a Front side material 33 b Side side material 33 c Rear side material 34 Top Facing material 35 Forward facing material 36 Seat support rod 37 Cap 38 Article placing plate (article placing portion)
39 Fitting piece (fitting part)
40 Elastic engagement piece 40a Locking claw 41 Positioning piece 50 Seat frame 50a Front frame 50b Side frame 50c Backrest support collar 51 Substrate 52 Cushion material 53 Cover member 54 Connection plate (connection member)
55 Seat mounting member 56 Bolt 57 Weld nut 58 Embossed portion 59 Upward recessed portion 60 Recessed groove 61 Bolt 62 Inserted groove 63 Inserted piece 64 Closed piece (closed portion)
65 Reinforcement piece 66 Mounting hole 67 Protrusion 68 Elastic engagement piece 68a Engagement protrusion 69 Opening 70 Locking step S S Article storage space

Claims (9)

In a chair comprising a leg, a seat supported by the leg, and an article placement section provided on the leg,
The leg includes a base and a pedestal that stands up from a center part in the left-right direction in the front part, the rear part or both the front part and the rear part of the base, and can support the seat,
The chair according to claim 1, wherein the article placement portion is provided at an appropriate position of the leg so that an article can be taken in and out from an area excluding the pedestal below the seat.   The chair according to claim 1, wherein the article placement section is an article placement board supported by a base.   The base is formed by bending a single saddle member into a loop shape in plan view, and an article placement plate is fitted to and supported by the loop-like base member from above. The chair described in.   The chair according to claim 3, wherein a fitting portion is provided on the lower surface of the outer peripheral portion of the article placement plate, and is fitted and locked to the lower portion of the outer peripheral surface of the saddle from the inside.   The right and left two pieces that extend upward by terminating the saddle material bent in a loop shape at the center of the front or rear portion of the base in the left-right direction and further extending the saddle material upward at this end. The chair according to claim 3 or 4, wherein the upward facing material is a pedestal.   The left and right upward facing members that form the pedestal are extended from the upper end further forward or rearward, and a seat support rod for supporting the seat is connected to the upper end of the pedestal. Item 6. The chair according to Item 5.   The seat comprises a seat frame that reinforces the front part and the left and right side parts, and a right and left connecting member having both left and right ends joined to both side parts of the seat frame. The chair described in.   The seat support rod is provided with a seat mounting member facing in the left-right direction, and the seat mounting member is fixed to the connecting member, whereby the central portion of the seat in the left-right direction is supported by the seat support rod. The chair according to claim 7.   The base is attached to a slide mechanism provided on the floor so as to move toward and away from the furniture with the top panel installed on the floor, and the pedestal is attached to the left and right of the rear of the base. The chair according to any one of claims 1 to 8, wherein the chair stands up from a central portion of the chair.

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