JP6433055B2 - Chair - Google Patents

Description

  The present invention relates to a chair used in a waiting room of a public facility, for example.

  As a chair used in a waiting room of a public facility, a chair in which a plurality of chair bodies having a seat are arranged in parallel on a supporting rod extending substantially horizontally is known (see, for example, Patent Documents 1 and 2). ).

  In the chair described in Patent Document 1, a support rod having a rectangular cross section is supported substantially horizontally by a pair of legs, and the chair body is fixed at an appropriate position in the longitudinal direction of the support rod by welding or bolt fastening. In the chair body, a metal connecting leg (bracket) is fixed to the lower surface of the seat frame that forms the frame of the seat, and the fitting recess formed in the lower end region of the connecting leg fits in the substantially upper half of the support rod In this state, it is fixed to the support rod by welding or bolt fastening. In addition, the chair body has a seat and a backrest that are fixed to each other, and the seat and the backrest both have a structure in which a spring or cushion material is attached to the frame, and the outside of the cushion material is covered with a skin material It is said that.

  Similarly to the chair described in Patent Document 1, the chair described in Patent Document 2 is such that the fitting recess of the connecting leg is fixed to a support rod having a rectangular cross section in a fitted state. The horizontal cross-section is shaped so as to gradually increase toward the upper end connected to the side frame of the seat, and the side frame and the connecting leg are formed of the same rigid body. They are connected to each other by bolts.

Japanese Patent No. 5378870 Japanese Patent No. 5259993

  As an appearance of this type of chair, it may be desired that the region extending from the chair main body to the connecting leg is smoothly continuous toward the support rod.

  However, in the chair described in Patent Document 1, a metal connecting leg protrudes downward from the lower surface of the seat of the chair body, and the lower end region of the connecting leg is coupled to the support rod in a fitted state. Therefore, it is difficult to make the region from the seat to the connecting leg into a shape having a continuous feeling.

Moreover, in the chair described in Patent Document 2, the horizontal cross section is gradually increased from the lower end portion of the connecting leg to the upper end portion connected to the side frame of the seat, and is connected to the side frame. Since the legs are formed of the same rigid body and are coupled to each other by bolts extending in the vertical direction, a certain degree of continuity can be provided in the region from the seat to the connecting leg.
However, in the case of the chair described in Patent Document 2, the capacity of the block of the connecting leg is increased and the manufacturing cost is increased, and a force (vibration or the like) that is displaced laterally in the width direction is input to the side frame of the seat. Since the side frame and the connecting leg are rigid bodies, there is a concern that a strong shearing stress acts on the fastening portion (bolt) that fastens the both, and the fastening portion is likely to deteriorate over time.

  Therefore, the present invention is intended to provide a chair capable of giving a continuity to an area from a seat to a connecting leg without causing an increase in manufacturing cost.

  In order to solve the above-described problem, a chair according to the present invention has a chair body having a seat for supporting a seated person's buttocks and a connecting leg extending downward from the lower surface of the seat, and extends substantially horizontally. In a chair provided with a support rod to which a lower end region of the connecting leg is fixed, a seat frame forming the skeleton of the seat and a leg frame forming the skeleton of the connecting leg are integrally coupled, and the seat frame and the The leg frame was covered with an integral mold resin having elasticity.

  Thereby, the appearance from the seat to the connecting leg is continuous in shape, the texture is the same, and there is no discontinuity. In addition, since the leg frame is covered with a mold resin having elasticity continuously from the seat without any gaps, the rigidity of the connecting leg can be increased, and the vibration of the connecting leg and the generation of abnormal noise are suppressed by the mold resin. Can do. Therefore, it is possible to suppress the decrease in rigidity of the connecting leg and the generation of vibration and noise while the connecting leg has a leg frame and can be manufactured at a relatively low cost.

A fitting recess to be fitted to the support rod is provided at a lower end region of the connecting leg, and at least a bottom portion of the fitting recess is exposed without the leg frame being covered with the molding resin, The leg is fixed to the support rod by sandwiching the support rod between the fitting recess and the receiving member in a state where the fitting recess is fitted to the support rod, and the receiving member is fastened and fixed to the leg frame. You may be made to do.
In this case, since the bottom of the fitting recess where the leg frame is exposed directly contacts the support rod, the connecting leg is accurately and stably positioned on the support rod.

The lower region of the leg frame is preferably covered with the mold resin so that the seating surface of the receiving member comes into contact with the leg frame when the receiving member is fastened and fixed.
In this case, when a biased load is applied to the chair main body during use, the mold resin is elastically deformed between the seating surface of the receiving member and rattling of the chair main body is suppressed.

The chair body further includes a backrest that supports a back of a seated person, and the backrest includes a backrest frame that forms a skeleton of the backrest and is covered with an elastic mold resin. An abutting surface that abuts on each other without being covered with the mold resin is provided on the edge and the rear edge of the seat frame, and the mold resin that covers the lower surface of the rear edge portion of the seat frame has a back surface of the seat. A fastening work hole that opens to the side may be provided, and the backrest frame and the seat frame may be fastened and fixed through the fastening work hole in a state in which the abutment surface is abutted.
In this case, since not only the seat frame and the leg frame but also the backrest frame is covered with the mold resin, a continuous appearance can be obtained from the backrest to the seat and the connecting leg. In addition, since the head of the fastening member that fastens the backrest frame and the seat frame is located in the fastening work hole that opens to the back side of the seat, the fastening member is difficult to see from the outside, and the appearance is even better It becomes.

The contact surface is inclined with respect to a vertical direction so that an upper portion faces the front side of the seat, and a shaft of a fastening member for fastening and fixing the backrest frame and the seat frame is inclined with respect to the contact surface. You may make it point in the substantially orthogonal direction.
In this case, since the axis of the fastening member that fastens and fixes the back frame and the seat frame is inclined with respect to the vertical direction, the axis of the fastening member when the seated person is seated by the backrest when using the chair body. Therefore, the component force in the shearing direction becomes difficult to act on. Therefore, it is advantageous in terms of strength of the fastening member.

At least a part of the contact surface between the back frame and the seat frame extends outward in the width direction from the extending position of the connecting leg, and the back frame and the seat frame are at least of the connecting leg. You may make it mutually fasten and fix in the width direction outer side position rather than the extension position.
At the time of sitting, usually, a large stress is likely to occur between the seat and the backrest in the inner region in the width direction than the extension position of the connecting leg. However, in the case of this structure, the seat and the backrest are fastened and fixed at least on the outer side in the width direction from the extension position of the connecting leg, so that a large load is unlikely to act on the fastening and fixing portion. Therefore, when this structure is adopted, it is difficult for positional deviation to occur between the seat and the backrest.

  According to the present invention, since the seat frame and the leg frame are covered with the integral molded resin having elasticity, the area extending from the seat to the connecting leg can be textured without causing an increase in manufacturing cost. Therefore, it can have a continuous feeling.

It is a perspective view of the chair concerning one embodiment of this invention. It is a perspective view of the chair concerning one embodiment of this invention. It is a perspective view of the frame part of the chair concerning one embodiment of this invention. It is sectional drawing corresponding to the IV-IV cross section of FIG. 3 of the chair which concerns on one Embodiment of this invention. It is a perspective view of the seat part of the chair concerning one embodiment of this invention. It is sectional drawing corresponding to the VI-VI cross section of FIG. 3 of the chair which concerns on one Embodiment of this invention. It is a perspective view which shows the modification of the chair which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an overall configuration of a chair 1 according to this embodiment.
The chair 1 according to this embodiment is a chaise longue used in a waiting room or the like, and a plurality of chair main bodies 10 (single chairs) are supported and fixed on a support rod 2 having a rectangular cross section extending linearly in a substantially horizontal manner. Yes. The support rod 2 is provided with legs 3A, 3B, 3C at a plurality of positions in the longitudinal direction, and is installed on the floor via the legs 3A, 3B, 3C. Further, the support rod 2 is formed of a metal material having high rigidity in terms of supporting the load of the plurality of chair main bodies 10 and the seated person. The chair main body 10 attached to the support rod 2 has the same structure. Therefore, in the following, only one chair body 10 and the structure of the mounting portion of the chair body 10 and the support rod 2 will be described as representatives.
In the case of the chair 1 of this embodiment, armrests 4 that are supported and fixed to the support rod 2 are disposed on both sides of each chair body 10. In addition, an article placing table 5 supported by the legs 3C is disposed between some adjacent chair bodies 10 and 10.

FIG. 2 is a view showing the chair body 10 attached to the support rod 2, and FIG. 3 is a view showing a skeleton part of the chair body 10 attached to the support rod 2.
The chair body 10 includes a seat 11 that supports a seated person's buttocks, a backrest 12 that supports the back of the seated person, and a lower end region that supports a lower end region 2 extending downward from the lower surfaces of the left and right side edges of the seat 11. And a pair of connecting legs 13 fixed to each other.

  The seat 11 and the connecting leg 13 each have a metal seat frame 14 and a leg frame 15 that form a skeleton. The leg frame 15 is integrally coupled to the left and right edges of the seat frame 14. The seat frame 14 and the left and right leg frames 15, 15 are covered with an integral mold resin 16 having almost the entire area thereof. For example, urethane or the like is used as the mold resin 16.

  The mold resin 16 is formed by placing the seat frame 14 and the left and right leg frames 15 and 15 integrally joined in a molding die and injecting and filling a resin such as urethane melted in that state. It is desirable that the molding resin 16 has a decorative layer having fine irregularities (texture pattern) on the surface thereof set in a molding die and is integrally formed on the surface of the molding resin 16 at the time of molding. As a result, a fine concavo-convex pattern having good appearance and touch is formed on the outer surface of the molded mold resin 16.

  The backrest 12 has a metal backrest frame 17 constituting a skeleton, and almost the entire outside of the backrest frame 17 is covered with a mold resin 16 like the seat 11 and the connecting leg 13. It is desirable to form a fine concavo-convex pattern on the outer surface of the mold resin 16 of the backrest 12 similarly to the seat 11 and the connecting leg 13.

  As shown in FIG. 3, the seat frame 14 includes a substantially U-shaped frame rod 14a along the left and right sides and the front side of the seat 11, and the left and right sides of the frame rod 14a. And a flat plate-like joining plate 14b which is fixed to the rear end by welding. Inside the substantially U-shaped frame rod 14a, a plurality of metal cushion springs 18 having a plurality of S-shaped bent portions are stretched in parallel.

FIG. 4 is a view showing a cross section corresponding to the IV-IV cross section of FIG. 3.
The joining plate 14b is inclined so that the upper part faces the front side of the seat 11 with respect to the vertical direction. The surface facing the rear upper side of the joining plate 14 b constitutes a contact surface 14 b-u with the backrest frame 17. The contact surface 14b-u is not covered with the mold resin 16 and is exposed as a metal surface. Further, as shown in FIG. 3, the left and right edges of the joining plate 14 b extend outward in the width direction from the extending position of the connecting leg 13 on the lower surface of the seat 11. Further, the joining plate 14b is formed such that the lower edge portion is curved in a substantially arc shape so that the substantially center position in the width direction bulges down to the maximum.

  Further, the leg frame 15 is welded to the lower surface of the side of the frame rod 14a at one end side, and extends from the one end side obliquely rearward and downward to the front rod 15f where the other end is bent vertically downward; One end portion is joined to the joining plate 14b, and extends from the one end side obliquely forward and downward, and then the other end portion bends vertically downward, and extends vertically below the front rod 15f and the rear rod 15r. And a connection plate 15a for connecting intermediate portions of the region to be extended. Here, assuming that areas extending vertically downward of the front rod 15f and the rear rod 15r are respectively referred to as downward extending portions 15f-e and 15r-e, as shown in FIG. A bolt fastening hole 19 having a female thread is formed on the lower surface side of 15f-e and 15r-e.

FIG. 5 is a perspective view of the seat 11 as seen from the lower surface side.
The leg frame 15 is covered with a molding resin 16 over almost the whole area except for the lower surfaces of the downwardly extending portions 15f-e and 15r-e of the front rod 15f and the rear rod 15r and the lower surface of the connection plate 15a. A fitting recess 20 is formed between the lower surface of the connection plate 15a and the front and rear lower extending portions 15f-e and 15r-e covered with the mold resin 16 and opens downward in a substantially U-shape. . The fitting recess 20 is fitted to the substantially upper half of the support rod 2 having a rectangular cross section.

As shown in FIGS. 2 to 4, a substantially U-shaped receiving metal fitting 21 (receiving member) that opens upward is fitted into the substantially lower half of the support rod 2 having a rectangular cross section. In this state, the connecting leg 13 is fastened and fixed by a bolt 22. Specifically, a pair of bolt insertion holes 21a and 21a penetrating in the vertical direction is formed in the receiving bracket 21, and the bolt 22 is inserted into the bolt insertion holes 21a and 21a from below the receiving bracket 21, The front end portion of the bolt 22 is fastened into the corresponding bolt fastening holes 19, 19 of the connecting leg 13.
The upper and lower upper and lower surfaces of the metal fitting 21 are seat surfaces 21b with which the lower surfaces of the connecting legs 13 come into contact when the bolts 22 are fastened. The mold resin 16 that covers the end surfaces of the downwardly extending portions 15f-e and 15r-e of the leg frame 15 and the peripheral regions of the downwardly extending portions 15f-e and 15r-e contacts the seating surface 21b.

As shown in FIG. 3, the backrest frame 17 has a rod skeleton 17a formed by welding a plurality of rod members, and a joining plate 17b welded to the lower end of the rod skeleton 17a. . On the upper part of the rod skeleton 17a, a metal cushion spring 23 having a plurality of S-shaped bent portions is stretched.
The lower surface of the joining plate 17b constitutes a contact surface 17b-l with the seat frame 14, and abuts with the contact surface 14b-u on the seat frame 14 side. The contact surface 17b-u is not covered with the mold resin 16 and is exposed as a metal surface. The contact surface 17b-u is formed in substantially the same shape as the contact surface 14b-u on the seat frame 14 side.

FIG. 6 is a view showing a cross section corresponding to the VI-VI cross section of FIG. 3.
The backrest frame 17 and the seat frame 14 are fastened and fixed to each other by a plurality of bolts 24 (fastening members) in a state where the contact surfaces 17b-l and 14b-u face each other. Fastening locations by the bolts 24 between the joining plates 17b and 14b are provided at a plurality of locations separated in the width direction. However, one fastening portion on each of the left and right sides of the joining plates 17b and 14b is provided at a position outside the extending direction of the connecting leg 13 in the width direction. The axis of the bolt 24 that fastens the joining plates 17b and 14b is oriented in a direction substantially orthogonal to the inclination of the contact surfaces 17b-l and 14b-u.

  Further, a fastening work hole 25 that opens to the back side of the seat 11 is formed in the mold resin 16 that covers the lower surface of the rear edge portion of the seat frame 14. The fastening work hole 25 is a work hole for detaching the bolt 24 that fastens the joining plates 17b and 14b. As shown in FIG. It is provided in the place.

  As described above, in the chair 1 according to this embodiment, the seat frame 14 and the leg frame 15 of the chair body 10 are integrally coupled, and the seat frame 14 and the leg frame 15 are made of an integral mold resin 16 having elasticity. It is covered. For this reason, in the chair 1 which concerns on this embodiment, while being able to make the external appearance from the seat 11 to the connection leg 13 shape-continuous, the texture can also be the same and there can be no discontinuity.

Furthermore, in the case of the chair 1 according to this embodiment, almost the entire area around the leg frame 15 is covered with the mold resin 16 continuous from the seat 11 with almost no gap. For this reason, the leg frame 15 of the connecting leg 13 and the peripheral area of the connecting part of the seat frame 14 and the leg frame 15 are tightly wrapped by the mold resin 16, and the rigidity of the connecting leg 13 and the connecting part of the seat 11 and the connecting leg 13 is rigid. Can be improved efficiently. Further, since the peripheral area of the leg frame 15 or the connecting portion between the seat frame 14 and the leg frame 15 is tightly wrapped by the mold resin 16, the occurrence of vibrations and noises can be suppressed by the mold resin 16.
Therefore, in the chair 1 according to this embodiment, since the leg frame 15 that can be manufactured at a low cost is used, it is possible to suppress the reduction in rigidity of the connecting leg 13 and the generation of vibration and noise. Compared with the case where the whole is formed of a metal block, the manufacturing cost can be reduced without causing functional problems.

  Further, in the chair 1 according to this embodiment, the connecting recess 13 is provided with the fitting recess 20, and the metal surface of the connection plate 15 a is exposed at the bottom of the fitting recess 20 without being covered with the mold resin 16. The connecting leg 13 sandwiches the support rod 2 between the fitting recess 20 and the receiving bracket 21 with the fitting recess 20 fitted to the support rod 2, and the receiving bracket 21 is bolted to the leg frame 15 in this state. This is fixed to the support rod 2. For this reason, the bottom of the fitting recess 20 where the metal connection plate 15a is exposed comes into direct contact with the upper surface of the support rod 2. Therefore, in the chair 1 according to this embodiment, the chair body 10 can be accurately and stably positioned with respect to the support rod 2.

  Furthermore, in the case of the chair 1 according to this embodiment, the lower region of the leg frame 15 is covered with the mold resin 16 so that the seating surface 21b of the catch 21 is brought into contact with the leg frame 15 when the bolt of the catch 21 is fastened. ing. For this reason, in the case of this chair 1, when a biased load is applied to the chair body 10 during use, the mold resin 16 is elastically deformed with the seat surface 21 b of the receiving metal 21, thereby supporting the chair body 10. The rattle and vibration around the heel 2 can be suppressed.

  In the chair 1 according to this embodiment, the backrest frame 17 is covered with the elastic mold resin 16, and the lower edge of the backrest frame 17 and the rear edge of the seat frame 14 are covered with the mold resin 16. Contact surfaces 17b-l and 14b-u that contact each other are provided. The mold resin 16 that covers the lower surface of the rear edge portion of the seat frame 14 is provided with a fastening work hole 25 that opens to the back surface side of the seat 11, and the backrest frame 17 and the seat frame 14 are in contact with each other. Fastened and fixed through the fastening work hole 25 in a state where 17b-l and 14b-u are abutted. For this reason, in the case of the chair 1 according to this embodiment, it is possible to have a continuous appearance from the backrest 12 to the seat 11 and the connecting leg 13, and the head of the bolt 24 that fastens the backrest frame 17 and the seat frame 14. Since the portion is positioned in the fastening work hole 25, the head of the bolt 24 is hardly visible from the outside, and the appearance can be further improved.

  In the case of the chair 1 according to this embodiment, the contact surfaces 17b-l and 14b-u of the back frame 17 and the seat frame 14 are such that the upper part faces the front side of the seat 11 with respect to the vertical direction. The shaft of the bolt 24 that is inclined and fastens the back frame 17 and the seat frame 14 is oriented in a direction substantially orthogonal to the inclination of the contact surfaces 17b-l and 14b-u. For this reason, when a force in the direction of pushing the backrest 12 backward from the back of the seated person is applied, the component force in the shearing direction is less likely to act on the shaft of the bolt 24. Therefore, by adopting this structure, it is possible to suppress the strength reduction of the bolt fastening portion.

  Furthermore, in the chair 1 according to this embodiment, the left and right edges of the contact surfaces 17b-l and 14b-u of the backrest frame 17 and the seat frame 14 are outside in the width direction from the extending position of the connecting leg 13. The backrest frame 17 and the seat frame 14 are bolted to each other at one or more locations in the width direction outer side position than the extension position of the connecting leg 13. For this reason, when seated on the chair body 10, the contact surfaces 17 b-1 and 14 b-u are located on the outer side in the width direction from the extended position of the connecting leg 13 where the stress is less likely to act between the seat 11 and the backrest 17. It becomes possible to maintain the fastened state reliably. Therefore, by adopting this structure, it is possible to prevent displacement between the seat 11 and the backrest 12.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary. For example, in the above-described embodiment, a plurality of chair main bodies 10 are installed side by side on the support rod 2 extending on a straight line, but curved in the horizontal direction like the chair 101 of the modified example shown in FIG. A plurality of chair main bodies 10...

2 Support rod 10 Single chair 11 Seat 12 Backrest 13 Connecting leg 14 Seat frame 14b-u Abutment surface 15 Leg frame 16 Mold resin 17 Backrest frame 17b-1 Abutment surface 20 Fitting recess 21 Receptacle 21b Seat surface 24 Bolt (fastening member)
25 Fastening hole

Claims (6)

A chair body having a seat for supporting a seated person's buttocks, and a connecting leg extending downward from the lower surface of the seat;
In a chair provided with a support rod that extends substantially horizontally and to which a lower end region of the connecting leg is fixed,
The seat frame forming the skeleton of the seat and the leg frame forming the skeleton of the connecting leg are integrally coupled,
The chair, wherein the seat frame and the leg frame are covered with an integral mold resin having elasticity. The lower end region of the connecting leg is provided with a fitting recess to be fitted to the support rod,
At least the bottom of the fitting recess is exposed without the leg frame being covered with the mold resin,
The connecting leg sandwiches the support rod between the fitting recess and the receiving member in a state where the fitting recess is fitted to the support rod, and the receiving member is fastened and fixed to the leg frame. The chair according to claim 1, wherein the chair is fixed to the chair.   The lower region of the leg frame is coated with the mold resin so as to come into contact with a seating surface of the receiving member together with the leg frame when the receiving member is fastened and fixed. Chair. The chair body further includes a backrest that supports the back of the seated person,
In the backrest, the backrest frame forming the backbone of the backrest is covered with an elastic mold resin,
The lower edge of the backrest frame and the rear edge of the seat frame are provided with contact surfaces that contact each other without being covered with the mold resin,
The mold resin that covers the lower surface of the rear edge portion of the seat frame is provided with a fastening work hole that opens on the back side of the seat,
The chair according to any one of claims 1 to 3, wherein the backrest frame and the seat frame are fastened and fixed through the fastening work hole in a state where the contact surfaces are abutted with each other. . The contact surface is inclined with respect to the vertical direction so that the upper part faces the front side of the seat,
The chair according to claim 4, wherein an axis of a fastening member that fastens and fixes the backrest frame and the seat frame is oriented in a direction substantially orthogonal to the inclination of the contact surface. At least a part of the contact surface between the backrest frame and the seat frame extends outward in the width direction from the extending position of the connecting leg,
The chair according to claim 4 or 5, wherein the backrest frame and the seat frame are fastened and fixed to each other at least at a position on the outer side in the width direction from the extended position of the connecting leg.

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