JP6915835B2 - Chair - Google Patents

Description

The present disclosure relates to chairs.

Conventionally, as shown in Patent Document 1, a chair in which a seat on which a chair user sits is made of an elastomer has been proposed.

Japanese Unexamined Patent Publication No. 2001-327360

Since the elastomer has high flexibility, if screws or the like are directly fastened to the elastomer seat body in order to attach the seat body to the support supporting the seat body, the screws may loosen or come off.

The present disclosure proposes a chair that can be firmly attached to the seat body.

One aspect of the present disclosure is a chair comprising a seat and a support that supports the seat. The seat body constitutes a seating surface, and is fixed to at least a seating portion formed of an elastomer and a first fixing portion formed of a member having a higher rigidity than the seating portion. And. The support also includes a second fixing portion. Then, by fixing the first fixing portion and the second fixing portion with a predetermined fixing member, the fixing of the seat body and the support body is realized.

In the chair configured in this way, since the first fixing portion is a member having higher rigidity than the seating surface, when the first fixing portion and the second fixing portion are fixed by the fixing member, the first fixing portion is formed. Compared with the case where it is assumed that the chair is composed of the same elastomer as the seating portion, a firm fixing can be realized. Therefore, the seat can be firmly attached to the support.

In the chair described above, the seating portion and the first fixing portion may be integrally molded. Since the seating portion containing the elastomer and the first fixing portion are integrally molded, the risk that the seating portion and the first fixing portion are separated can be reduced.

Further, in the chair described above, the first fixing portion may be formed along at least a part of the edge of the seating portion in a state of being overlapped with the lower side surface of the seating portion.
With such a configuration, the first fixing portion can suppress the deformation of the edge of the seating portion. Further, since the first fixed portion is overlapped on the lower side of the seating surface, it is possible to prevent the first fixed portion from coming into contact with the user, and the user's contact with the first fixed portion reduces the sitting comfort. It can be suppressed.

Further, in the chair described above, the first fixing portion may be a frame-shaped member formed along the edge of the seating portion and forming an opening in the center.
With such a configuration, the first fixing portion can suppress the deformation of the edge of the seating portion. Further, since the elastic deformation of the seating portion is ensured by the opening of the first fixing portion, it is possible to prevent the sitting comfort from being lowered.

Further, in the chair described above, the fixing member is a member having a male screw, the first fixing portion has a female screw to be fastened to the male screw, and the second fixing portion has a penetration through which the male screw can be inserted. Even if a hole is formed and the male screw is inserted into the through hole and fastened with the female screw, the first fixing portion and the second fixing portion can be fixed to each other. good.

With such a configuration, the first fixing portion and the second fixing portion can be firmly fixed by fastening the screws.
Further, in the chair described above, the first fixing portion is formed at the end portion of the seat body in the first direction so as to spread in the second direction intersecting the first direction, and the end in the first direction. The portion may be configured to have an anterior droop portion that slopes downward.

With such a configuration, the front hanging portion causes the end portion of the seat body in the first direction to be inclined downward, so that the sitting comfort of the user can be improved.
Further, in the chair described above, the support has an edge member which is a tubular or columnar member arranged along at least a part of the edge of the seating portion, and the seating body has the seating portion. , The edge member may be configured to cover at least a part from above.

With such a configuration, the seating portion covers the support from above, so that the user can be prevented from directly touching the support, and the sitting comfort of the user can be improved.

1A is a side view, FIG. 1B is a front view, FIG. 1C is a rear view, FIG. 1D is a plan view, and FIG. 1E is IE of FIG. 1A. -IE sectional view. It is a perspective view which shows a sitting body and a framework. It is a perspective view which shows a sitting body and a framework. It is a perspective view which shows the state which the seat body is attached to a framework. 5A is a plan view, FIG. 5B is a side view, FIG. 5C is a sectional view taken along line VC-VC of FIG. 5A, and FIG. 5D is a bottom view showing only the backup resin. be. 6A is a front view, FIG. 6B is a sectional view taken along line VIB-VIB of FIG. 5A, FIG. 6C is a sectional view taken along line VIC-VIC of FIG. 5A, and FIG. 6D is a screw member. It is a cross-sectional view with the same cross section as FIG. 6B in a state where the backup resin and the seat plate receiving portion are fixed by the above. It is sectional drawing which has the same cross section as FIG. 6B which shows the modification of the backup resin. It is a cross-sectional view having the same cross section as that of FIG. 5C, and FIGS. 8A to 8C are cross-sectional views showing a modified example of the state in which the elastomer has entered the slit.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
[1. Embodiment]
[1-1. overall structure]
As shown in FIG. 1, the chair 1 has a seat body 11, a backrest 13, a support 15, a leg end portion 17, and the like.

In the present embodiment, the configuration of each part may be described using directions such as front-back, left-right, and up-down, but these directions are only used for convenience of explanation, and the embodiments of the present disclosure are made. There is no limitation on. The above-mentioned directions are based on the user when the user is normally seated in the chair 1 for the purpose of facilitating understanding.

The chair 1 is symmetrical with respect to a plane extending back and forth and up and down.
[1-2. Support 15]
As shown in FIGS. 2 to 4, the support 15 includes a pair of left and right pipe bodies 31 formed by bending and welding a tubular metal pipe, a rod-shaped front connecting portion 32 connecting the pipe bodies 31, and a rod-shaped front connecting portion 32. It has a rear connecting portion 33 and a seat plate receiving portion 34 attached between a pair of pipe bodies 31.

The pipe body 31 has a front pillar 41, a rear pillar 42, a lower pillar 43, and an upper pillar 44.
The front pillar 41 is located at the front portion of the pipe body 31 and has a length in the vertical direction.
The rear pillar 42 is located at the rear portion of the pipe body 31 and has a length in the vertical direction.

The lower pillar 43 is located at the lower part of the pipe body 31, and connects the lower end of the front pillar 41 and the lower end of the rear pillar 42. The lower pillar 43 is arranged along the floor surface on which the chair 1 is installed.
The upper pillar 44 is located above the pipe body 31, and connects the upper end of the front pillar 41 and the upper side of the rear pillar 42 slightly above the upper and lower centers. The front pillar 41 and the upper pillar 44 are bent and connected via a bent portion 46 in which a metal pipe is bent. Further, the rear end portion of the upper pillar 44 is connected to the rear connecting portion 33 by welding. The upper pillar 44 has a thick portion 51 on the front side and a thin portion 52 on the rear side. Further, the upper pillar 44 is arranged along the left and right edges of the seating portion 21, which will be described later. The upper pillar 44 is an example of the edge member of the present disclosure.

The thick portion 51 has the same diameter as other portions in the pipe body 31. On the other hand, the thin-walled portion 52 is formed with a recess 53 recessed downward on the upper surface, whereby the thickness of the thin-walled portion 52 is thinner than that of the thick-walled portion 51.

The front connecting portion 32 connects the front pillars 41 of the left and right pipe bodies 31 to each other. Further, the rear connecting portion 33 connects the rear pillars 42 of the left and right pipe bodies 31 to each other.
The seat plate receiving portion 34 is a plate-shaped member that has been bent around it. The seat plate receiving portion 34 has a pair of left and right side portions 55 arranged along a pair of left and right upper pillars 44, and a front portion 56 connecting the front ends of the pair of side portions 55.

The side portion 55 is welded to the upper pillar 44, whereby the seat plate receiving portion 34 is fixed to the upper pillar 44. As shown in FIG. 3, through holes 57 are formed in each of the pair of left and right lateral portions 55 at three locations spaced apart from each other in the front-rear direction. The through hole 57 is configured so that a male screw of a screw member 65, which will be described later, can be inserted. The seat plate receiving portion 34 is an example of the second fixing portion of the present disclosure.

[1-3. Seat 11]
The seat body 11 is for the user to be seated, and has a seating portion 21 and a backup resin 22 as shown in FIGS. 3 and 5A to 5C.

The seating portion 21 constitutes a seating surface 21a on the upper side and is formed of an elastomer. Elastomer broadly refers to elastic polymeric materials.
The seating portion 21 has a substantially rectangular plate shape as a whole, and the front portion has a curved surface that is gently curved downward.

As shown in FIGS. 2, 4, 5A, etc., the width of the seating portion 21 in the left-right direction is wide at the rear and wide at the front with a step portion 47 formed toward the front on both the left and right side surfaces. It is narrowly formed. Hereinafter, the region of the seating portion 21 behind the step portion 47 will be referred to as a wide portion 49. The step portion 47 is inclined so as to project forward toward the upper side when viewed from the left and right sides.

As shown in FIGS. 3 and 5D, the backup resin 22 is a substantially rectangular frame-shaped member, and is a pair of horizontal frame portions 23 arranged along the left and right edges of the seating portion 21, and a seating portion. A rear frame portion 24 arranged along the rear edge of the 21 and connecting the rear ends of the pair of horizontal frame portions 23 and a pair of horizontal frame portions 23 arranged along the front edge of the seating portion 21. It has a front frame portion 25 that connects the front portions to each other.

The front frame portion 25 is formed so as to spread to the left and right at the front end portion of the seat body 11, and has at least a front hanging portion 26 whose front end is inclined downward. The front portion of the seating portion 21 forms a curved surface along the front hanging portion 26. The front direction is an example of the first direction in the present disclosure, and the left-right direction is an example of the second direction intersecting the first direction.

Further, a plurality of slits 63 are formed in the front hanging portion 26. Each of the plurality of slits 63 has a length in the front-rear direction, and is arranged side by side on the left and right sides.
An opening 27 is formed in the center of the backup resin 22. The center here means a central portion when the backup resin 22 is regarded as a frame, that is, the inside of the frame. The backup resin 22 is fixed to the seating portion 21 in a state of being overlapped on the lower side surface of the seating portion 21. The entire opening 27 is covered with the seating portion 21.

The backup resin 22 is formed of a member having a higher rigidity than the elastomer constituting the seating portion 21. As the backup resin 22, for example, an olefin resin such as polypropylene, a synthetic resin such as polyamide, a fiber reinforced plastic to which glass fiber or carbon fiber is added, or a material other than a resin such as metal or wood can be used. It is not limited to these.

The seating portion 21 and the backup resin 22 are integrally molded by two-color molding. Specifically, for example, a process in which the mold side is exchanged by one injection molding machine to continuously mold the seating portion 21 and the backup resin 22 in order, or the molded backup resin 22 is placed in the mold. It is conceivable that the seating portion 21 is molded by setting the seating portion 21 on the seat. When a metal member other than resin is used instead of the backup resin, it can be integrally molded by the latter step, so-called insert molding.

As shown in FIG. 5A, the seating portion 21 completely covers the backup resin 22 when viewed from above. The entire upper surface of the front hanging portion 26 is also covered with an elastomer. As shown in FIG. 5C, the elastomer has entered the inside of the slit 63. The backup resin 22 is an example of the first fixing portion in the present disclosure.

As shown in FIGS. 6B and 6C, the horizontal frame portion 23 is formed so as to fit in the upwardly recessed groove portion 71 formed in the vicinity of the left and right edges of the seating portion 21. The groove 71 includes an end wall 72 that bends at the left-right end of the seating portion 21 and extends downward, and an inner side wall 73 that is a downward ridge formed at a position spaced from the end. , And the horizontal frame portion 23 arranged inside the groove portion 71 has a positional relationship of being sandwiched from the left and right by the end wall 72 and the inner side wall 73.

Further, the horizontal frame portion 23 is formed with a protruding portion 28 projecting downward. As shown in FIG. 6B, the screw hole 58 is formed in the protrusion 28. The screw hole 58 is formed at a position corresponding to the through hole 57 of the side portion 55 of the seat plate receiving portion 34.

Further, as shown in FIG. 6C, a groove portion 29 recessed downward is formed in the portion of the horizontal frame portion 23 where the screw hole 58 is not formed. A ridge 75 provided in the seating portion 21 is inserted into the groove portion 29.

As shown in FIG. 6D, the backup resin 22 and the side portion 55 are fixed by inserting the screw member 65 into the through hole 57 of the side portion 55 of the seat plate receiving portion 34 and fastening the screw member 65 to the screw hole 58. It is realized by. When fixing the backup resin 22 and the seat plate receiving portion 34, the lower tip of the protruding portion 28 comes into contact with the upper side surface of the side portion 55. The screw member 65 is an example of a predetermined fixing member in the present disclosure.

In this state, as shown in FIGS. 1D and 4, the wide portion 49 of the seating portion 21 covers not only the backup resin 22 but also the thin portion 52 of the upper pillar 44 from above. In other words, in the range where the wide portion 49 behind the step portion 47 is formed in the front-rear direction, the seating portion 21 covers the thin-walled portion 52 and the side portion 55 from above and is viewed from above in the entire area in the left-right direction. The thin portion 52 and the side portion 55 are invisible.

Of the upper pillars 44, the thick portion 51 is arranged on the outer periphery of the seat body 11 and is arranged at a position not aligned with the seating portion 21 in the thickness direction of the seat body 11.
[1-4. effect]
According to the embodiment described in detail above, the following effects can be obtained.

(1A) In the chair 1, since the backup resin 22 is a member having a higher rigidity than the seating portion 21, the backup resin 22 and the seat plate receiving portion 34 can be firmly fixed by the screw member 65. Therefore, it can be firmly attached to the support 15 of the seat 11.

(1B) In the chair 1, since the seating portion 21 containing the elastomer and the backup resin 22 are integrally molded by two-color molding in the seat body 11, there is a risk that the seating portion 21 and the backup resin 22 are separated from each other. Can be reduced.

(1C) In the chair 1, since the backup resin 22 has a frame-like shape in which the backup resin 22 is arranged along the edge portion of the seating portion 21, deformation of the edge portion of the seating portion 21 can be suppressed. Further, since the elastic deformation of the seating portion 21 is ensured by the opening 27 of the backup resin 22, it is possible to prevent the backup resin 22 from deteriorating the sitting comfort.

(1D) In the chair 1, since the backup resin 22 is stacked on the lower side of the seating portion 21, it is difficult for the backup resin 22 to come into contact with the seated user. Therefore, it is possible to prevent the user from deteriorating the sitting comfort due to the contact with the metal support 15.

(1E) Since the backup resin 22 has the front hanging portion 26 in the chair 1, the sitting comfort can be improved. Further, since the front hanging portion 26 is covered with the seating portion 21, it is possible to prevent the user from coming into contact with the relatively hard backup resin 22 and receiving discomfort.

(1F) In the chair 1, the wide portion 49 of the seating portion 21 covers the thin-walled portion 52 from above, so that the user can be prevented from directly touching the support 15, and the sitting comfort of the user can be improved. ..

[2. Other embodiments]
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments, and it goes without saying that various embodiments can be taken as long as they belong to the technical scope of the present disclosure.

(2A) In the above embodiment, the configuration in which the backup resin 22 has a frame shape is illustrated, but the shape and arrangement of the backup resin may be various modes within a range in which the backup resin 22 can be fixed to the support 15. can. For example, the backup resin may not be frame-shaped, but may be provided only at the position where the female screw should be formed. Further, the backup resin may have a configuration in which the front hanging portion 26 is not provided. Further, the backup resin may have a configuration in which the opening 27 is not provided. Further, as shown in FIG. 7, the protruding portion 28 may be located on the left-right center side of the horizontal frame portion 23 so as not to come into contact with the inner side wall 73.

(2B) The material and shape of each component of the chair 1 are not limited to those described in the above embodiment, and may have various configurations. For example, although the pipe body 31 is exemplified as a tubular member, it may be a columnar member.

(2C) In the above embodiment, the screw member 65 is exemplified as the fixing member, but a member other than the screw may be used as long as it can fix the backup resin 22 and the seat plate receiving portion 34. For example, the fixing member may be fixed by using a rivet or a clip. Further, as the screw, a tapping screw that does not require a female screw may be used. If the object to which the tapping screw is attached is the backup resin 22 having high rigidity, it is possible to prevent the tapping screw from falling off.

(2D) In the above embodiment, the seat body 11 illustrates a configuration in which the seating portion 21 and the backup resin 22 are integrally molded by two-color molding. However, the seating portion 21 and the backup resin 22 may be integrally molded by a method other than two-color molding, or even if they are not integrally molded and fixed by an adhesive or other fixing parts. good.

(2E) In the above embodiment, the configuration in which the female thread is formed on the backup resin 22 is illustrated, but the backup resin may be configured to include a component having a female thread such as a nut. For example, it is conceivable that the nut is arranged in the backup resin by insert molding.

(2F) In the above embodiment, the upper side surface of the backup resin 22 is completely covered by the seating portion 21, in other words, the backup resin 22 is arranged under the seating portion 21, but the backup resin 22 is illustrated. Part or all of the above may be configured not to be covered by the seating portion 21 from above.

(2G) In the above embodiment, the configuration in which the wide portion 49 of the seating portion 21 covers a part of the upper pillar 44 from above is illustrated, but the upper pillar 44 may be configured not to be covered by the seating portion 21. However, the seating portion 21 may be configured to cover the entire upper pillar 44 including the thick portion 51.

(2F) In the above embodiment, the configuration in which the elastomer penetrates into the slit 63 is illustrated, but the configuration in which the elastomer does not penetrate into the slit 63 may be used. By allowing the elastomer to penetrate into the slit 63, the seating portion 21 and the backup resin 22 can be firmly fixed.

Further, the elastomer may be configured to pass through the slit and cover up to the lower side surface of the front hanging portion 26. For example, as shown in FIG. 8A, the slit 91 has an expanded portion 92 on the lower side surface, and the covering portion 93 covering the lower side surface of the front hanging portion 26 among the elastomers of the seating portion 21. May be configured to cover at least a part of the periphery of the slit 91 from below by entering the expansion portion 92.

Further, as shown in FIG. 8B, the covering portion 94 may be configured to cover the lower side surface of the front end portion of the front hanging portion 26.
Further, as shown in FIG. 8C, the covering portion 95 may be configured to widely cover the lower side surface of the front hanging portion 26.

1 ... Chair, 11 ... Seat body, 15 ... Support, 17 ... Leg end, 21 ... Seating part, 21a ... Seating surface, 22 ... Backup resin, 23 ... Horizontal frame part, 24 ... Rear frame part, 25 ... Front Frame part, 26 ... Front hanging part, 27 ... Opening, 28 ... Protruding part, 29 ... Groove part, 31 ... Pipe body, 32 ... Front side connecting part, 33 ... Rear connecting part, 34 ... Seat plate receiving part, 41 ... Front pillar , 42 ... Rear pillar, 43 ... Lower pillar, 44 ... Upper pillar, 46 ... Bent part, 47 ... Step part, 49 ... Wide part, 51 ... Thick part, 52 ... Thin wall part, 53 ... Recessed part, 55 ... Lateral Part, 56 ... front part, 57 ... through hole, 58 ... screw hole, 63 ... slit, 65 ... screw member, 71 ... groove, 72 ... end wall, 73 ... inner side wall, 75 ... ridge, 91 ... slit, 92 ... Expansion part, 93-95 ... Cover part

Claims (14)

The sitting body and
With a support for supporting the seat body,
The sitting body
A seating portion having at least a plate-shaped elastomer constituting the seating surface, and a seating portion.
It is provided with a first fixing portion which is fixed to the seating portion and is formed of a material different from the elastomer and having higher rigidity than the elastomer.
The support includes a second fixing portion.
By fixing the first fixing portion and the second fixing portion with a predetermined fixing member, fixing of the seat body and the support body is realized.
The first fixing portion is formed along the edge of at least a part of the seating portion in a state of being overlapped with the lower side surface of the seating portion.
The seat body is a chair having a region in which only the plate-shaped elastomer is present and the first fixing portion is not present in the central portion of the seating portion when viewed from above. The sitting body and
With a support for supporting the seat body,
The sitting body
A seating portion that constitutes a seating surface and is formed of at least an elastomer,
It is provided with a first fixing portion which is fixed to the seating portion and is formed of a material different from the elastomer and having higher rigidity than the elastomer.
The support includes a second fixing portion.
By fixing the first fixing portion and the second fixing portion with a predetermined fixing member, fixing of the seat body and the support body is realized.
A chair having a concave groove formed in at least one of the seating portion and the first fixing portion, and at least a part of the other different from the one is in close contact with the one inside the groove. .. The sitting body and
With a support for supporting the seat body,
The sitting body
A seating portion that constitutes a seating surface and is formed of at least an elastomer,
It is provided with a first fixing portion which is fixed to the seating portion and is formed of a material different from the elastomer and having higher rigidity than the elastomer.
The support includes a second fixing portion.
By fixing the first fixing portion and the second fixing portion with a predetermined fixing member, fixing of the seat body and the support body is realized.
The seating portion is a chair that closely covers the outer peripheral side surface of the first fixing portion. The chair according to any one of claims 1 to 3.
A chair in which the seating portion and the first fixing portion are integrally molded. The chair according to any one of claims 2 to 4.
The first fixing portion is a chair formed along the edge of at least a part of the seating portion in a state of being overlapped with the lower side surface of the seating portion. The chair according to any one of claims 1 to 5.
The first fixing portion is a frame-shaped member formed along the edge of the seating portion and forming an opening in the center of the chair. The chair according to any one of claims 1 to 6.
The fixing member is a member having a male screw.
The first fixing portion has a female screw to be fastened to the male screw.
A through hole into which the male screw can be inserted is formed in the second fixing portion.
A chair in which the first fixing portion and the second fixing portion are fixed by inserting the male screw into the through hole and fastening the female screw. The chair according to any one of claims 1 to 7.
The first fixing portion is formed at an end portion of the seat body in the first direction so as to spread in a second direction intersecting the first direction, and the end portion in the first direction is inclined downward. A chair with a front hanging part. The chair according to any one of claims 1 to 8.
The support has an edge member which is a tubular or columnar member arranged along the edge of at least a part of the seating portion.
The seat body is a chair in which the seating portion covers at least a part of the edge member from above. The sitting body and
With a support for supporting the seat body,
The sitting body
A seating portion that constitutes a seating surface and is formed of at least an elastomer,
It is provided with a first fixing portion which is fixed to the seating portion and is formed of a material different from the elastomer and having higher rigidity than the elastomer.
The support includes a second fixing portion.
By fixing the first fixing portion and the second fixing portion, the fixing of the seat body and the support body is realized.
A chair in which the seating portion and the first fixing portion are integrally molded. The sitting body and
With a support for supporting the seat body,
The sitting body
A seating portion that constitutes a seating surface and is formed of at least an elastomer,
It is provided with a first fixing portion which is fixed to the seating portion and is formed of a material different from the elastomer and having higher rigidity than the elastomer.
The support includes a second fixing portion.
By fixing the first fixing portion and the second fixing portion, the fixing of the seat body and the support body is realized.
The first fixing portion is formed at an end portion of the seat body in the first direction so as to spread in a second direction intersecting the first direction, and the end portion in the first direction is inclined downward. A chair with a front hanging part. The sitting body and
With a support for supporting the seat body,
The sitting body
A seating portion that constitutes a seating surface and is formed of at least an elastomer,
It is provided with a first fixing portion which is fixed to the seating portion and is formed of a material different from the elastomer and having higher rigidity than the elastomer.
The support includes a second fixing portion.
By fixing the first fixing portion and the second fixing portion, the fixing of the seat body and the support body is realized.
The support has an edge member which is a tubular or columnar member arranged along the edge of at least a part of the seating portion.
The seat body is a chair in which the seating portion covers at least a part of the edge member from above. The sitting body and
With a support for supporting the seat body,
The sitting body
A seating portion that constitutes a seating surface and is formed of at least an elastomer,
It is provided with a first fixing portion which is fixed to the seating portion and is formed of a material different from the elastomer and having higher rigidity than the elastomer.
The support includes a second fixing portion.
By fixing the first fixing portion and the second fixing portion, the fixing of the seat body and the support body is realized.
The first fixing portion is formed at an end portion of the seat body in the first direction so as to spread in a second direction intersecting the first direction, and the end portion in the first direction is inclined downward. Has a front hanging part to
The seating portion is a chair that completely covers the first fixing portion when viewed from above. The sitting body and
With a support for supporting the seat body,
The sitting body
A seating portion that constitutes a seating surface and is formed of at least an elastomer,
It is provided with a first fixing portion that is fixed to the seating portion and is formed of a member having a higher rigidity than the seating portion.
The support includes a second fixing portion.
By fixing the first fixing portion and the second fixing portion, the fixing of the seat body and the support body is realized.
The first fixing portion is formed with a slit penetrating the first fixing portion in the direction in which the seating portion and the first fixing portion are aligned.
The seating portion is a chair that completely covers the first fixing portion when viewed from above.

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