JP2001008785A - Structure of chair, such as seat or backrest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve comfortability to sit on by preventing the direct contact of part of the body of a seating person with supporting members. SOLUTION: This structure has membrane-like members 2, such as mesh or films or fabrics, supporting members 3 which hold part of the peripheral edges of the membrane-like members 2 and open parts 4 which are released from the supporting members 3 among the peripheral edges of the membrane- like members 2. The supporting members 3 are built to a frame 6 of the chair 5 in such arrangement that at least portions of the open parts 4 directly support the load of the seating person by themselves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair structure such as a seat or a backrest. More specifically, the present invention relates to a structure comprising a membrane member such as a mesh or a film or a fabric and a supporting member for holding the periphery thereof, and being assembled to a chair frame to function as a chair seat or a backrest. .

[0002]

2. Description of the Related Art As shown in FIG. 4, there is known a chair 102 in which a seat 103 is directly attached to a pipe frame 101 constituting a leg (see Japanese Utility Model Publication No. 8-8663).
As shown in FIG. 5, the seat 103 of the chair 102 is an annular support member 10 which is screwed and fixed to a receiving fitting 108 welded to the pipe frame 101 with a bolt 109.
4, a membrane member 105 made of a mesh sheet integrated with the support member 104, a cushion 106 placed on the membrane member 105, and an outside of the support member 104 covering the cushion 106 and the support member 104. And an upholstery 107 which wraps around from behind to be fixed. FIG.
Reference numeral 110 denotes a nut screwed into the bolt 109, and reference numeral 111 denotes a nut receiving hole of the support member 104.

[0003] Then, as shown in FIG.
In the chair structure in which the support member 104 and the support member 104 are integrally formed, the annular support member 104
The film member 105 is formed so as to pull the entire peripheral edge of the film member 105 outward in order to apply a necessary tension.

[0004]

However, in the chair structure described above, since the support member 104 is annular, the thigh of the seated person is supported by the membrane member 105 and sinks, so that the thigh is supported by the support member 104. May be pressed against the edge of the camera, causing a sense of incongruity and uncomfortable sitting.
That is, while the membrane member 105 has elasticity, the support member 104 needs to have rigidity to withstand the weight of the occupant. A sharp step that suddenly bends at
The thigh may be pressed against this part, causing an uncomfortable feeling.

Similarly, when a chair structure composed of a membrane member and an annular support member is used as a backrest, the back and waist of the seated person are supported by the support member and the membrane member at the upper and lower portions of the backrest. May be discomforted by being pressed against the step, and the sitting comfort may be poor. In other words, as long as the support member is annular, a part of the body always comes into contact, and the sitting comfort is impaired.

Accordingly, an object of the present invention is to provide a chair structure such as a seat or a backrest, which can improve the sitting comfort.

[0007]

In order to achieve the above object, a chair structure such as a seat or a backrest according to claim 1 includes a film member such as a mesh or a film or a cloth and a peripheral member of the film member. And a release portion that is released from the support member at the periphery of the film-shaped member, and at least a portion of the release portion directly supports the load of the occupant by itself. In such an arrangement, the support member is assembled to the chair frame.

Accordingly, in a chair in which this structure is assembled to a frame, the film-like member is deformed when a occupant applies a load. At this time, since the release portion is released without being supported by the support member, a portion of the body of the occupant supported by the release portion is supported only by the elasticity of the membrane member. Therefore, the thighs and back of the seated person can be prevented from hitting the support member, so that the seated person can feel the elasticity of the membrane member as it is and the sitting comfort is improved.

The support member is not limited to a specific material. However, if the support member is made of a thermoplastic synthetic resin, the film member and the support member can be easily integrally formed by injection molding or the like.

According to a second aspect of the present invention, in the chair structure such as the seat or the backrest according to the first aspect, the support member is U-shaped and the release portion is provided between both ends of the support member. To be formed.

Here, in this specification, the “U-shape” means
It means a shape in which a part of the ring is cut out, and specifically includes a V-shape, a U-shape, a C-shape, a horseshoe shape, etc. in addition to a literal U-shape.

Therefore, since the film-like member can be arranged inside the support member made of an integral body, the structure can be formed so as to apply tension to the film-like member. For this reason, tension can be applied to the membrane member without reinforcing the support member with the frame.

Further, the invention according to claim 3 is the invention according to claim 1.
In the chair structure such as the seat or the backrest described above, the release portions are formed at two or more places with the support member interposed therebetween.

Therefore, it is sufficient to form a single structure so as not to apply tension to the membrane member, and to apply tension to the membrane member when assembling the support member to the frame of the chair. Therefore, it is not necessary to apply a pretension to the film-shaped member at the time of manufacturing the structure, so that the workability can be improved and the cost can be reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail based on an embodiment shown in the drawings.

As shown in FIG. 1, a chair structure 1 such as a seat or a backrest according to the present invention holds a membrane member 2 such as a mesh, a film, or a fabric, and a part of the periphery of the membrane member 2. Support member 3 made of, for example, a thermoplastic synthetic resin
And a release portion 4 that is released from the support member 3 in the peripheral edge of the film-shaped member 2. The support member 3 is assembled to the frame 6 of the chair 5 in such an arrangement that at least a part of the release part 4 directly supports the load of the occupant by itself. For this reason, since the release part 4 formed in a part of the periphery of the film-like member 2 is arranged to directly support the load of the occupant, the release part 4 is supported by the release part 4 in the body of the occupant. The site is supported only by the elasticity of the film-like member 2. Therefore, it is possible to prevent the thighs and the back of the occupant from hitting the support member 3, so that the occupant can
You can feel the elasticity of the body as it is, and the sitting comfort is improved.

For the structure 1 used as a seat, the support member 3 is U-shaped and the release portion 4 is
To be formed between both ends. For this reason,
Since the film-like member 2 can be arranged inside the support member 3 made of an integral body, the structure 1 can be formed so as to apply tension to the film-like member 2. The member 2 can have tension. In the present embodiment, the support member 3 has a U-shape and is fixedly mounted on the frame 6 such that the release portion 4 is located on the front side. For this reason, the thigh of the seated person pushes down the release portion 4 at the front end of the seat to elastically deform. Thereby, the release part 4 of the seat
Since the thigh is supported only by the membrane member 2 and the buttocks are supported by the on-membrane member, the thighs and buttocks are elastically supported without any level difference, and the sitting comfort can be improved.

In the structure 1 used as a backrest, the release portions 4 are formed at two places with the support member 3 interposed therebetween. Therefore, the structure 1 itself is formed so as not to apply tension to the film-like member 2, and when the support member 3 of the structure 1 is assembled to the frame 6 of the chair 5, tension is applied to the film-like member 2. Can be given. Therefore, it is not necessary to apply a pretension to the film-shaped member 2 at the time of manufacturing the structure 1, so that the workability can be improved and the cost can be reduced. In the present embodiment, the support member 3 is two vertically long cylindrical members whose upper parts are closed, and is fixed by being inserted into the frame 6 so that the release parts 4 are respectively located on the upper side and the lower side. For this reason, the upper part and the waist of the back of the seated person respectively press the release part 4 rearward to elastically deform. Thus, the entire region from the back to the waist is elastically supported by the film-shaped member 2 alone without any step, so that the sitting comfort can be improved.

The support member 3 is made of a thermoplastic synthetic resin made of a single material, and is formed as an integrated product integrally formed with a part of the peripheral edge of the film member 2 by injection molding or the like. For this reason,
When the edge of the membrane member 2 is folded back and sewn to form an elongated hole for accommodating a part of the frame 6,
Since the sewing operation using a sewing machine is not required as compared with a case where an elongated bag made of another cloth material or an attachment member to the frame 6 is sewn at the edge of the structure 1, the manufacture of the structure 1 is simplified, Production can be facilitated and cost can be reduced. Moreover, the degree of freedom in designing the structure 1 can be improved as compared with the case where sewing work by a sewing machine is required.

It is preferable to use a mesh cloth (for example, Dymetrol manufactured by DuPont) as the film-like member 2. In the present embodiment, the film-like member 2 is made of a mesh cloth, but is not limited to this, and may be made of another material such as a film having elasticity and capable of supporting the weight of a seated person, such as vinyl, leather, cloth, and wire mesh. .

In the structure 1 used as a seat, the membrane member 2 is integrally formed so as to be attached to the upper surface of the support member 3. Here, when the structure 1 serving as the seat is mounted on the frame 6, it is preferable to provide a cover member that covers an integrated portion of the support member 3 and the membrane member 2. In this case, since the integrated portion can be covered and hidden by the cover member, the appearance can be improved.

In the structure 1 used as a backrest, the membrane member 2 is integrally formed so as to be completely buried in the support member 3. In this case, since the integral part of the film-like member 2 with the support member 3 is not exposed, the appearance can be improved.

These structures 1 are used as they are as seats and backrests of the chair 5. In some cases, the skin 1 covers the entire upper surface and outer surface of the membrane member 2 and the support member 3. A member may be attached. In this case, the peripheral portion of the film-like member 2 exposed on the upper surface of the support member 3 can be hidden, and the appearance of the seat or the backrest can be made any color or pattern by selecting the skin member.

The frame 6 of the chair 5 is assembled by welding pipes. The frame 6 has a U-shaped support frame portion 7 having an open front side for supporting the support member 3 of the seat from below.
And an auxiliary frame 8 for connecting the left and right frames at a position distant downward from the release portion 4 of the seat, and a support rod portion 9 for inserting and supporting the support member 3 of the backrest from above. . For this reason, since the release portion 4 is released without being supported by the frame 6 in both the seat and the backrest, elastic deformation of the release portion 4 due to the load of the occupant can be ensured. In addition, since each support member 3 is fixed to the frame 6, its structural strength is reinforced.

The means for fixing the support member 3 of the seat to the support frame 7 is not particularly limited. For example, a screw or a locking claw integrally formed or attached to the support member 3 may be used. 7 may be hooked with one touch. In any case, since the support member 3 and the frame 6 can be fixed, even if the film-like member 2 is pulled by the load of the occupant, the support member 3 can be prevented from shifting.

The support member 3 of the backrest includes a support rod 9
It is fixed by plugging in. Here, the film-like member 2 is provided so as to connect the support members 3 at the shortest distance without loosening. For this reason, even if the membrane member 2 is deformed rearward due to the load of the occupant and the support member 3 rotates with respect to the support rod portion 9, the load is lost and the tension of the membrane member 2 causes the support member 3 to rotate. Return to the original position. In the present embodiment, the support member 3 of the backrest is merely inserted into the support rod portion 9. However, the present invention is not limited to this. For example, as shown in FIG. 9 may be fixed. In this case, even if the membrane member 2 is integrated with the front side of the support member 3, the rotation of the support member 3 due to the tension of the membrane member 2 or the load on the back of the seated person can be prevented.

The structure 1 configured as described above is formed by, for example, insert molding. For example, the film-like member 2 is hooked on a projection for holding the film-like member 2 formed inside the injection-molding mold, and the film-like member 2 is set on the mold. Alternatively, the film-like member 2 is held outside the mold.

Here, since the above-mentioned structure 1 as a seat has tension on the film-like member 2 alone, it is necessary to apply a pre-tension when the film-like member 2 is installed in a mold. I do.
Moreover, since the structure 1 as a backrest does not have tension on the film-shaped member 2 by itself, it is not necessary to apply a pretension when the film-shaped member 2 is installed in a mold. Therefore, the manufacturing operation can be simplified and the workability can be improved.

Then, the support member 3 is injection-molded while the film member 2 is housed in the cavity of the mold, and the support member 3 is formed in a state of being integrated with the film member 2. Thereby, the structure 1 as an integrally molded product in which the support member 3 and the film-like member 2 are firmly and easily integrated is obtained. The method for forming the support member 3 integrally with the film-like member 2 is not limited to the injection molding method, but may be another method such as a compression molding method or a casting method.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention. For example, in the present embodiment, the film-like member 2 of the structure 1 as a seat is integrally formed on the upper surface of the support member 3, but the invention is not limited thereto.
It may be made to be integrally molded in the inside. Further, in the present embodiment, the film-like member 2 of the structure 1 as the backrest is integrally formed in the support member 3, but the present invention is not limited to this, and as shown in FIG. The member 2 may be integrally formed on the upper surface of the support member 3.

Further, the place where the film-like member 2 and the support member 3 are integrated or joined is not limited to the upper surface or the inside of the support member 3 as in this embodiment, but may be the lower surface or the back surface of the support member. In this case, the integral part of the membrane member 2 with the support member 3 can be made invisible from the occupant side, so that the appearance can be improved.

The method of integrating the film-like member 2 and the support member 3 is not limited to the integral molding by injection molding as described above, but may be performed by using the support member 3 and the film-like member 2.
Various methods can be applied that can integrate.
For example, the film-like member 2 and the support member 3 may be separately formed, and the periphery of the film-like member 2 may be integrated with the surface of the support member 3 by bonding, screwing with a bolt or the like, or stapling. good. Alternatively, the support member 3 having a protrusion on the surface may be formed, and the periphery of the film-like member 2 may be hooked on the protrusion to be integrated. Further, the support member 3
May be formed in half along the longitudinal direction, and the peripheral edge of the film-like member 2 may be sandwiched therebetween to be integrated by bonding, screwing, or fitting. When the supporting member 3 is formed in half, a convex portion and a concave portion that fit each other are formed on each of the sandwiching surfaces of the supporting member 3 facing each other, and between the convex portion and the concave portion. The film-like member 2 may be sandwiched. According to this, the holding force of the film-shaped member 2 can be further increased.

Further, a groove or a claw for assembling with the frame 6 is formed in the support member 3, and the support member 3 is attached to the frame 6 with the film member 2 sandwiched between the groove or the claw.
May be assembled. At this time, for example, the peripheral edge of the film-like member 2 is wound around the frame 6 in advance, and the support member 3 is inserted from above, or the peripheral edge of the film-like member 2 is put into the groove of the support member 3 in advance. The support member 3 may be fitted to the frame 6 in the placed state. Further, in this case, the support member 3 and the frame 6 may be fixed by a tightening force of fitting, or the support member 3 and the frame 6 may be fixed by screws or the like. When the support member 3 and the frame 6 are fixed by screws or the like, the holding force of the film-like member 2 can be further increased by penetrating the screw for bolting through the film-like member 2. Further, by forming a convex portion and a concave portion which fit each other between the groove of the support member 3 and the frame 6, the film-like member 2 is provided between the convex portion and the concave portion.
Can be sandwiched, so that the holding force of the film-like member 2 can be further increased.

In the present embodiment, the structure 1 as the seat is placed on the support frame 7 and the structure 1 as the backrest is inserted into the support rod 9, but the present invention is not limited to this. For example, as shown in FIG. 3, the structure 1 as a seat may be inserted into the frame 6, or the structure 1 as a backrest may be placed on the frame 6 and fixed with a screw member or the like. In any case, since the release portion 4 can be arranged so as to directly support the load of the occupant, the occupant's body can be prevented from hitting the support member 3 and the sitting comfort can be improved.

In the present embodiment, the structure 1 as a seat is provided with the U-shaped support member 3.
However, the present invention is not limited to this, and two support members 3, 3 whose front and rear sides are longitudinal directions may be provided on the left and right sides, respectively. In this case, since the release portions 4 are formed before and after the structure 1, not only the thighs but also the rear end of the buttocks of the occupant are supported without hitting the support member 3, so that the sitting comfort can be improved.

Further, in the present embodiment, the structure 1 as the backrest is provided with the support members 3 and 3 which are separate from each other on the left and right. However, the present invention is not limited to this. A member may be provided. According to this, since the waist of the occupant is supported by the lower part of the support member 3, the lower part of the support member 3 may function as a lumbar support to improve sitting comfort.

In the above-described embodiment, one structure 1 is provided with two release portions 4 and 4 so that it is not necessary to apply a pretension to the film-like member 2 when the structure 1 is manufactured. Release section 4 for eliminating the need for pretension.
Is not limited to two places, and the number of
You may make it form more than a part. For example, as shown in FIG. 3, the structure 1 as a seat can be provided with four release portions 4 sandwiching four support members 3 sequentially. In this case, each release part 4 is attached to four places of the frame 6 and a necessary tension is applied to the membrane member 2 at the time of attachment. This structure 1 also eliminates the need to apply a pretension to the film-like member 2 at the time of manufacturing the structure 1, and can improve the workability of manufacturing. Moreover, since the release portions are located on the four sides of the seat, the seated person is not supported by the support member 3 even if he or she sits in any of the four directions, so that the sitting comfort can be improved.

The support member 3 of the present embodiment is entirely made of a single thermoplastic synthetic resin, but is not limited to this. May be filled. In this case, since the strength of the support member 3 is improved, the portion of the frame 6 that supports and supports the support member 3 itself can be simplified.

Further, in the present embodiment, the support member 3 is made of a synthetic resin. However, the support member 3 is not limited to this, and may be made of other materials such as wooden and metal. In this case as well, the thighs and back of the seated person are supported by the release portion 4, so that the sitting comfort can be improved.

Further, in each of the above-described embodiments, the structure 1 is applied to the seat and the backrest of the chair 5, but is not limited to this, and may be applied to, for example, an armrest of a chair. Also in this case, since the release part 4 can be arranged so as to directly support the load such as the elbow of the occupant, it is possible to prevent the occupant's body from hitting the support member 3 and improve the feeling of use of the chair.

[0041]

As is apparent from the above description, according to the structure of the chair such as the seat or the backrest according to the first aspect,
Since the release portion is released without being supported by the support member, a portion of the body of the occupant supported by the release portion is supported only by the elasticity of the membrane member. Therefore, the seated person can feel the elasticity of the film-shaped member as it is, so that sitting comfort can be improved.

According to the structure of the present invention, when the support member is made of a thermoplastic synthetic resin, the film member and the support member can be integrally formed by injection molding or the like. As compared with the case where the mounting holes and the mounting members are sewn to the frame, the manufacture of the structure is simplified, so that mass production can be easily performed and the cost can be reduced. Moreover, the degree of design freedom of the structure can be improved as compared with the case where sewing work by a sewing machine is required.

Further, according to the structure of the chair such as the seat or the backrest according to the second aspect, since the membrane member can be arranged inside the support member made of an integral body, tension is applied to the membrane member. The structure can be formed to provide.

According to the structure of the chair such as the seat or the backrest according to the third aspect, it is not necessary to apply a pretension to the film-like member at the time of manufacturing the structure, so that the workability is improved and the cost is reduced. Can be achieved.

[Brief description of the drawings]

FIG. 1 is an exploded view showing a chair using the structure of the present invention.

FIG. 2 is an exploded view showing a chair utilizing another embodiment of the structure.

FIG. 3 is an exploded view showing a chair utilizing another embodiment of the structure.

FIG. 4 is a perspective view showing a conventional pipe frame chair.

FIG. 5 is a front view showing a state cut along a line VV in FIG. 4;

FIG. 6 is a perspective view showing a conventional structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Structure 2 Membrane member 3 Support member 4 Release part 5 Chair 6 Frame

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuyuki Ito 5331 Nishiharu Kinoshitagawara, Ina-shi, Nagano Takano Corporation Furniture Development Department (72) Inventor Nobuhisa Kubota 5331 Nishiharukinoshimogawara, Ina-shi, Nagano Takano Corporation Furniture, Inc. Inside the Development Department (72) Inventor Kazuyuki Horiuchi 5331 Nishiharu Kinoshita Kawara, Ina-shi, Nagano Furniture Development Department, Takano Corporation (72) Inventor Yojiro Kinoshita 6-1-1 Oimazato Minami, Higashi-Nari-ku, Osaka-shi, Osaka KOKUYO Corporation (72) Inventor Satoshi Sumiya 6-1-1-1 Oimazato-Minami, Higashi-Nari-ku, Osaka-shi, Osaka Inside (72) Inventor Nobuyuki 6-1-1 Oimazato-Minami, Higashi-Nari-ku, Osaka-shi, Osaka KOKUYO Stock In-house F term (reference) 3B084 EA00 3B095 AC03 CA01 CA06

Claims (3)

[Claims] 1. A film-like member such as a mesh, a film, or a cloth, a support member that holds a part of a periphery of the film-like member, and a support member that is released from the support member among the periphery of the film-like member. A seat or backrest wherein the support member is assembled to a chair frame in such an arrangement that at least a portion of the release portion alone directly supports the load of the occupant. Etc. chair structure. 2. The structure of a chair such as a seat or a backrest according to claim 1, wherein said support member is U-shaped, and said release portion is formed between both ends of said support member. object. 3. A chair structure such as a seat or a backrest according to claim 1, wherein said release portions are formed at two or more places sandwiching said support member.