JP2002240081A - Method for producing structure functioning as seat or seat back of chair and structure using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve appearance. SOLUTION: A method for producing a structure 1 is composed of a film- shaped member 2 such as a mesh, a film, a cloth, and a nonwoven fabric, and a frame-shaped support member 3 of a synthetic resin which holds the periphery of the member 2. In a mold for insert-molding the member 3 with the use of the member 2 as a core material, with tension applied to make the member 2 display elasticity necessary as the structure 1, the member 2 is not contacted, or point-contacted or line-contacted with a mold surface which forms the cavity 6 of the mold. The peripheral side part 2a of the member 2 is arranged to pass through the fringe part 3c of the support member 3, the synthetic resin is injected into the cavity 6 of the mold and cured to mold the support member 3 and simultaneously integrated with the member 2, and the member 2 protruded from the periphery of the support member 3 is cut off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a structure functioning as a chair seat or a backrest and a structure using the same. More specifically, the present invention comprises a membrane member such as a mesh or a film or a fabric or a non-woven fabric and a frame-like support member for holding the periphery thereof, and is assembled to a chair frame to function as a chair seat or backrest. The present invention relates to a method of manufacturing a structure and a structure using the same.

[0002]

2. Description of the Related Art As shown in FIGS. 15 and 16, there is known a chair 102 in which a seat 103 is directly attached to a pipe frame 101 constituting a leg (actually, 8-867).
No. 3). The seat 103 of the chair 102 has a bolt 1 on a receiving fitting 108 welded to the pipe frame 101.
09, a frame-shaped support member 104 screwed and fixed,
A film-like member 105 made of a mesh sheet integrated with the frame-like support member 104; a cushion 106 placed on the film-like member 105; and a frame-like support member covering the cushion 106 and the frame-like support member 104. And an upper covering material 107 which is wound around from the outside to the back side and fixed. In FIG. 16, reference numeral 110 denotes a nut screwed into the bolt 109, and reference numeral 111 denotes a nut receiving hole of the frame-shaped support member 104.

[0003] The frame-shaped support member 104 in which the film-shaped member 105 is integrated, that is, a so-called shell-shaped structure is formed by insert molding. As shown in, for example, Japanese Patent Publication No. 7-37049, this formation is performed by using a pair of clamp mechanisms 113 arranged so as to sandwich the mold 112 outside the mold 112 as shown in FIG. The shape member 105 is sandwiched and positioned between the molds 112. At this time, the tension applying mechanism 114 pulls the clamp mechanism 113 in a direction separating from the mold 112 (indicated by an arrow in the drawing) to apply necessary tension as the seat 103 to the membrane member 105. Then, the frame-shaped support member 104 and the film-shaped member 105 are integrated by closing each mold 112 and performing injection molding. Further, after the frame-shaped support member 104 has hardened, the frame-shaped support member 104 is removed from the mold 112, and the film-shaped member 105 protruding from the peripheral edge of the frame-shaped support member 104 is cut off. Thereby, the structure is completed.

[0004]

However, in the above-described structure manufacturing method, since the film-like member 105 is exposed along the surface of the frame-like support member 104, the film-like member 1 is exposed.
A non-smooth fixing surface between the synthetic resin 05 and the synthetic resin appears, and the appearance is not good. In addition, the peripheral edge 116 after the protruding film-like member 105 has been cut off is easily peeled off along the surface as shown in FIG. 18, and if it is peeled off, the appearance becomes poor. Therefore, if this structure is directly attached to the frame of the chair, the appearance of the chair is impaired.

Accordingly, an object of the present invention is to provide a method of manufacturing a structure that functions as a chair or backrest of a chair having a good appearance, and a structure utilizing the structure.

[0006]

In order to achieve the above object, a first aspect of the present invention is to provide a frame-like support member made of a synthetic resin for holding a film-like member such as a mesh or a film or a fabric or a non-woven fabric and a peripheral edge thereof. In a method of manufacturing a structure that is assembled to a chair frame and functions as a chair seat or a backrest, a film-shaped member is used as a core material to insert-mold a frame-shaped support member. In a state where a tension is exerted on the member to exert a necessary elasticity as a structure, the film-shaped member makes no contact or point contact or line contact with a mold surface forming a mold cavity, and the peripheral side of the film-shaped member is It is installed so as to pass through the edge of the frame-shaped support member, and a synthetic resin is injected into the cavity of the mold and cured to form the frame-shaped support member and, at the same time, to be integrated with the film-shaped member to support the frame-shaped support member. So that cut membrane member protruding from the periphery of the timber.

[0007] Therefore, since the peripheral side of the film-like member passes through the edge of the frame-like support member, even if an unnecessary portion of the film-like member is trimmed, no trace of the trimming remains on the side surface of the structure. For this reason, the appearance of the structure can be improved.
In addition, since the film-like member does not come into surface contact with the mold surface in the cavity, it is possible to prevent the fixing surface between the frame-like support member and the film-like member from being exposed to the outside, thereby improving the appearance. Also, since it is possible to prevent the edge of the film-like member from which the protruding portion has been cut off from peeling off along the surface of the frame-like support member,
The appearance can be improved.

According to a second aspect of the present invention, there is provided a method for manufacturing a structure functioning as a seat or a backrest of a chair according to the first aspect, wherein the center of the film-shaped member is the inner surface of the frame-shaped support member. It passes through the central part in the front and back direction. In this case, since the film-like member is thickly supported from the front and back sides inside the frame-like support member, the supporting force of the film-like member by the frame-like support member is increased to increase the load that can be supported by the film-like member. can do.

Further, the invention according to claim 3 is the invention according to claim 1.
In the method for manufacturing a structure functioning as a chair seat or a backrest according to the above-mentioned item 2, the cavity is provided with a support member for supporting the film-shaped member away from the mold surface. Therefore, the film-shaped member can be hidden inside the frame-shaped support member to prevent the fixing surface from being exposed.

[0010] The invention according to claim 4 is based on claim 1.
3. The method for manufacturing a structure functioning as a chair seat or a backrest according to any one of the above items 3 to 3, wherein an escape hole through which the synthetic resin can pass is formed in a portion of the membrane member facing the gate of the mold. Like that.

Accordingly, the synthetic resin injected from the gate can easily pass through the escape hole of the film-like member to the back side of the film-like member, so that the flow of the synthetic resin can be improved and evenly distributed. Can be.

According to a fifth aspect of the present invention, in the method for manufacturing a structure functioning as a chair seat or a backrest of the fourth aspect, a flow hole through which a synthetic resin can pass is formed near the escape hole. I am trying to be. Therefore, the resin can easily reach the front and back of the membrane member through the escape hole and the circulation hole.

[0013] On the other hand, the invention according to claim 6 comprises a membrane member such as a mesh or a film or a fabric or a non-woven fabric and a frame-like support member for holding the periphery thereof, and is assembled to a frame of the chair to seat the chair or the chair. In the method of manufacturing a structure that functions as a backrest or the like, the frame-shaped support member is formed of a half member that is split in half along the longitudinal direction, and imparts tension to the membrane member so as to exhibit the elasticity required for the structure. In this state, the film-like member is sandwiched between the half-split members, and the film-like member and the frame-like support member are integrated by welding, bonding, sewing or screwing, and the film-like member protrudes from the peripheral edge of the frame-like support member. Is cut out.

Accordingly, since the film-like member is sandwiched between the half members of the frame-like support member, the film-like member protrudes from the outer peripheral surface of the frame-like support member and is exposed along the surface of the frame-like support member. I haven't. For this reason, since the fixed surface of the film-like member does not appear on the surface of the frame-like support member, the appearance can be improved.
Further, when the protruding portion of the film-like member is cut off from the base, the end surface of the film-like member becomes flush with the surface of the frame-like support member, so that the appearance can be improved and the film-like member can be prevented from peeling off.

Further, since the front and back surfaces of the film-like member can be welded, adhered or sewn to the frame-like support member,
Compared to the conventional case where the film-like member is attached so as to be exposed along the surface of the frame-like support member and only one side of the film-like member is welded or bonded or sewn, the mounting area is increased and the tensile strength is increased. Can be stronger.

According to a seventh aspect of the present invention, in the method for manufacturing a structure functioning as a seat or a backrest of a chair according to the sixth aspect, the holding surface of the frame-shaped supporting member facing the half-split member is provided. The projections and the recesses that fit each other are formed. Therefore, the fixing force of the film member can be further increased.

Further, the invention according to claim 8 comprises a membrane member such as a mesh or a film or a fabric or a non-woven fabric and a frame-like support member for holding the periphery thereof, and is assembled to a frame of the chair to be seated on a chair or a chair. In the method for manufacturing a structure functioning as a backrest or the like, the frame-shaped support member includes a concave member having a concave groove extending in a longitudinal direction, a convex member fixedly pressed into the concave groove, and a film-shaped member. The film-like member and the frame-like support member are integrated by inserting the film-like member and press-fitting the convex member into the concave groove in a state where a tension is exerted to exert the elasticity required for the structure. I have to.

Therefore, since the film-like member is sandwiched between the concave member and the convex member and protrudes from the outer peripheral surface of the frame-shaped support member, it is not exposed along the surface of the frame-shaped support member.
For this reason, since the fixed surface of the film-like member does not appear on the surface of the frame-like support member, the appearance can be improved. Further, when the protruding portion of the film-like member is cut off from the base, the end surface of the film-like member becomes flush with the surface of the frame-like support member, so that the appearance can be improved and the film-like member can be prevented from peeling off.

Further, since the convex member can be fixed by pressing the concave member into the concave member and sandwiching the film member, the workability can be improved.

According to a ninth aspect of the present invention, in the method for manufacturing a structure functioning as a seat or a backrest of a chair according to the eighth aspect, the film-like member is provided on one of the concave member and the convex member in advance. They are fixed. Therefore, the film-like member can be easily sandwiched between the concave member and the convex member.

According to a tenth aspect of the present invention, in the method for manufacturing a structure functioning as a chair seat or a backrest of the chair according to the eighth or ninth aspect, an overhang portion is formed at a tip end of the convex member. In addition, a locking portion is formed in the concave groove so that the overhang portion is caught and prevented from falling off.

Therefore, by hooking the film-like member on the tip of the convex member and pushing the film-like member into the concave groove, it becomes difficult for the convex member to fall out of the concave groove, and it is possible to strengthen the sandwiching of the film-like member between the convex member and the concave material. it can.

On the other hand, the invention according to claim 11 comprises a film-like member such as a mesh or a film or a cloth or a non-woven fabric and a frame-like support member for holding the periphery thereof, and is assembled to a frame of a chair to seat the chair or the chair. In the method of manufacturing a structure that functions as a backrest or the like, the frame-shaped support member has plasticity, is hollow, has an opening along the longitudinal direction, and can pass through the opening at the periphery of the film-shaped member. A locking member having a large thickness is attached, and by inserting the locking member of the film-shaped member through the opening into the inside of the frame-shaped support member, a tension is exerted on the film-shaped member to exert a necessary elasticity as a structure. The frame-shaped support member is caulked so that the opening is smaller than the outer diameter of the locking member, so that the film-shaped member and the frame-shaped support member are integrated.

Therefore, since the film-like member is caulked by the frame-like support member and protrudes from the outer peripheral surface, it is not exposed along the surface of the frame-like support member. For this reason, since the fixed surface of the film-like member does not appear on the surface of the frame-like support member, the appearance can be improved. Further, since unnecessary portions do not appear after the film-shaped member is fixed to the frame-shaped support member, the operation of cutting unnecessary portions can be eliminated, and the operation process can be simplified. Further, since the film-like member can be fixed by caulking the frame-like support member into which the locking member is inserted, workability can be improved.

According to a twelfth aspect of the present invention, there is provided a film-like member such as a mesh or a film, a cloth, or a non-woven fabric and a frame-like support member for holding a peripheral edge thereof. In the method of manufacturing a structure that functions as a backrest or the like, the frame-shaped support member includes a half member that is split in half along the longitudinal direction,
A locking member is attached to the peripheral edge of the film-shaped member, and tension is applied to the film-shaped member to exhibit the necessary elasticity as a structure, so that the peripheral portion of the film-shaped member is sandwiched between the half members and locked. The film-shaped member and the frame-shaped support member are integrated by welding, bonding, sewing or screwing so that the member contacts the outer surface of the frame-shaped support member.

Therefore, since the membrane member is sandwiched between the half members and protrudes from the outer peripheral surface of the frame-shaped support member,
Not exposed along the surface of the frame-shaped support member. For this reason, since the fixed surface of the film-like member does not appear on the surface of the frame-like support member, the appearance can be improved. Further, since unnecessary portions do not appear after the film-shaped member is fixed to the frame-shaped support member, the operation of cutting unnecessary portions can be eliminated, and the operation process can be simplified.
In addition, both the front and back surfaces of the film-like member can be welded or bonded, sewn or screwed to the frame-like support member, and the locking member can be prevented from coming off, so that the fixing strength of the film-like member can be increased.

According to a thirteenth aspect of the present invention, a structure that functions as a chair seat or a backrest is manufactured by using the method of manufacturing a structure according to any one of the first to twelfth aspects. ing. Therefore, the fixed surface of the film-like member does not appear on the surface of the frame-like support member, and the periphery of the film-like member does not peel off, so that the appearance of the structure can be improved.

The invention according to claim 14 is the first invention.
3. In the structure that functions as a chair seat or a backrest according to 3, the membrane member is a mesh sheet. For example, a mesh sheet is constituted by a woven fabric of a polyester yarn and an elastomeric polyester yarn. This polyester mesh sheet has little sag. And since it is a mesh sheet, since elasticity and air permeability are favorable, a structure with good sitting comfort can be obtained. In addition, when the film-like member is integrated by injection molding of the frame-like support member, the resin passes through the gap between the yarns of the fabric of the film-like member so that the resin goes around so as to cover the film-like member. Become. Thereby, the film-shaped member formed in advance is firmly integrated with the frame-shaped support member formed by injection molding.

According to a fifteenth aspect of the present invention, there is provided a structure functioning as a chair seat or a backrest of the chair according to the thirteenth or fourteenth aspect, wherein all components of the structure are made of an olefin resin. I have.

Therefore, when the chair is discarded, it is possible to separate the structure from a metal structure such as a pipe frame, a seat receiving member, a leg, a back support rod or a non-resin structure such as a wooden structure. It is easy and can be reused without being separated for each part such as a film-like member and a frame-like support member, which is suitable for recycling.

[0031]

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. In the present embodiment, a case is described in which the structure of the present invention is applied to a chair seat.

As shown in FIGS. 1 and 2, the structure 1 has a film-like member 2 such as a mesh or a film, a cloth, or a non-woven fabric, and a resin frame such as a thermoplastic synthetic resin for holding the periphery thereof. The support member 3 is attached to a chair frame. Further, the frame-shaped support member 3 has a rigidity capable of supporting the tension of the film-shaped member 2 by itself. That is, the frame-shaped support member 3 does not need to be attached to the frame of the chair.
Support the structure 1 so that the necessary tension can be obtained. For this reason, when the structure 1 is attached to the frame, a necessary tension is not applied to the film-like member 2, so that the attaching operation can be facilitated.

In the method of manufacturing the structure 1, a tension is applied to the film-like member 2 so as to exhibit the resiliency required for the structure 1, and the film-like member 2 is used as a core material and the frame-like support member 3 is used.
Is inserted between dies 7 and 8 for insert molding. At this time, the film member 2 is brought into non-contact, point contact or line contact with the mold surface forming the cavity 6 of the molds 7 and 8, and the peripheral side portion 2a of the film member 2 is It is installed so as to pass through the part 3c.

Further, the synthetic resin is injected into the cavities 6 of the molds 7 and 8 and cured, and the frame-shaped support member 3 is molded and simultaneously integrated with the film-shaped member 2. Then, the film-shaped member 2 protruding from the edge 3c of the frame-shaped support member 3 is cut off. Therefore, since the peripheral side portion 2a of the film-like member 2 passes through the edge 3c of the frame-like support member 3, even if an unnecessary portion of the film-like member 2 is trimmed, a trace of the trimming remains on the side surface of the structure 1. Therefore, the appearance of the structure 1 can be improved. Also, since the film-like member 2 does not make surface contact with the mold surface in the cavity 6,
The fixing surface between the frame-shaped support member 3 and the film-shaped member 2 can be prevented from being exposed to the outside, and the appearance can be improved. In addition, since the fixing surface of the film-like member 2 is hidden, the edge of the film-like member 2 obtained by cutting off the protruding portion is prevented from being peeled off along the surface as shown in FIG. 18 to improve the appearance. be able to.

In the present embodiment, the central side portion 2 of the film-like member 2
“b” passes through the center of the inner side surface 3 b of the frame-shaped support member 3 in the front and back direction. In this case, since the center side portion 2b of the film-like member 2 is thickly supported from the front and back sides inside the frame-like support member 3, the supporting force of the film-like member 2 on the frame-like support member 3 is increased to increase the film thickness. The load that can be supported by the shaped member 2 can be increased.

The frame-shaped support member 3 has an L-shaped cross section. The peripheral side portion 2a of the film-like member 2 is pulled out from the lower edge portion 3c of the outer side surface 3a of the frame-like support member 3, and from the center of the inner side surface 3b of the frame-like support member 3 in the front-back direction. The center side 2b of the film-like member 2 is drawn out.

The thermoplastic resin forming the frame-shaped support member 3 is made of PET (polyethylene terephthalate) or PP.
An olefin resin such as (polypropylene) is used. However, the thermoplastic synthetic resin is not limited to this,
For example, a known or new material generally used as the frame-shaped support member 3 such as polyester can be used. In the present embodiment, the frame-shaped support member 3 is formed of a thermoplastic synthetic resin. However, the present invention is not limited to this, and another resin such as a thermosetting resin that cures at a lower temperature than the film-shaped member 2 may be used. You may. In this case, the frame-shaped support member 3
The film member 2 and the frame-shaped support member 3 are heated to such an extent that the
And are integrated.

Further, the membrane member 2 is made of an olefin resin or polyester. When the entire structure 1 is made of an olefin-based resin, it can be recycled as it is without being discarded. In the present embodiment, the film-like member 2 is a mesh sheet made of polyester (for example, trade name: Dymetrol, manufactured by DuPont). That is, the mesh sheet is constituted by a woven fabric of polyester yarn and elastomeric polyester yarn.

In this embodiment, since the frame-shaped support member 3 is made of an olefin-based resin and the film-shaped member 2 is made of polyester, it is possible to recycle the structure 1 without separating metals and the like. it can. Alternatively, both the frame-shaped support member 3 and the film-shaped member 2 may be made of polyester. Also in this case, it is possible to recycle as it is without separating metals and the like from the structure 1. In addition, since the film-like member 2 is a mesh, it is possible to obtain a high-permeability and a comfortable structure 1 with good sitting comfort.

When the above-mentioned structure 1 is formed, the peripheral side portion 2a of the film-like member 2 is pulled by a tension applying mechanism (not shown) to apply a tension for exhibiting the elasticity required for the structure 1. . The film-like member 2 is clamped by being sandwiched between the molds 7 and 8 from both sides.

At this time, the peripheral side portion 2a of the film-like member 2 is pulled out from the lower edge portion 3c of the outer side surface 3a of the frame-like support member 3, and the center of the inner side surface 3b of the frame-like support member 3 in the front-back direction. Since the central side portion 2b of the film-like member 2 is drawn out of the cavity 6, the film-like member 2 is applied to the corner 8a of the lower mold 8 in the cavity 6, and is fixed in position by line contact.
For this reason, since the exposed surface of the film-like member 2 does not appear on the surface of the frame-like support member 3 without the film-like member 2 coming into surface contact with the mold surface, the appearance can be improved, and the protruding portion is cut off. The edge of the film-like member 2 can be prevented from peeling along the surface of the frame-like support member 3.

Further, a synthetic resin is injected into the cavities 6 of the molds 7 and 8 from the gate 18. Since the film-like member 2 is a mesh sheet, the synthetic resin passes through the gap between the yarns of the woven fabric of the mesh so as to cover the film-like member 2. Thereby, the film-like member 2 formed in advance is integrated and fixed to the frame-like support member 3 formed by injection molding. After the hardening of the synthetic resin, the molded product is taken out of the molds 7 and 8, and the film-like member 2 protruding from the edge 3 c of the frame-shaped support member 3 is cut out.

The structure 1 can be used as it is as a seat or a backrest, for example, by screwing it to a chair frame. However, in some cases, the upper surface and the outer surface of the membrane member 2 and the frame-like support member 3 may be used. A skin member may be attached so as to cover the entire side surface. In this case, the periphery of the film-shaped member 2 exposed on the upper surface of the frame-shaped support member 3 can be hidden, and the appearance can be made to have any color or pattern. The fixing of the frame and the structure 1 is not limited to screwing. For example, a locking claw is formed integrally with the frame-shaped support member 3 and this is inserted into a receiving portion such as a hole or a concave portion on the frame or the receiving bracket side. May be locked by one touch.

According to the structure 1 of the present embodiment, all members used as seats can be formed of plastic or elastomer so that metal parts are not used, so that there is no need to separate when disposing, and disposal is easy. Can be done. In the present embodiment, since the frame-shaped support member 3 is made of an olefin-based resin and the film-shaped member 2 is made of polyester, it is possible to recycle the structure 1 without separating metals and the like. In particular, if all the constituent members of the structure 1, that is, the frame-shaped support member 3 and the film-shaped member 2 are made of an olefin-based resin, it is possible to recycle the structure 1 without separating metals and the like.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the present embodiment, the frame-shaped support member 3 has a cross section L
Although it is shaped like a letter, the shape is not limited to this, and a rectangular section may be used as shown in FIG. In this case, a core pin 10 which is a support member for supporting the film-like member 2 is provided in the cavity 6, and the center side portion 2b of the film-like member 2 is pulled out from the center of the inside surface 3b in the front-back direction, and the outside surface 3d The peripheral edge 2a of the film member 2 is pulled from the lower edge 3c. For this reason, the film-like member 2 in the cavity 6 is supported at both ends by being sandwiched between the molds 7 and 8 and supported by the core pin 10 in the cavity 6 and fixed in position by point contact. The appearance of the structure 1 can be improved by preventing the fixing surface of the film-like member 2 from being exposed on the surface of the support member 3.

Further, in these embodiments, the central side portion 2b of the film-like member 2 passes through the central portion of the inner side surface 3b of the frame-like support member 3 in the front-back direction, but is not limited to this. As shown in FIG. 4, the inner surface 3 of the frame-shaped support member 3
Alternatively, it may pass through the upper edge 3d of b. Also in this case, it is possible to prevent the fixing surface between the frame-shaped support member 3 and the film-shaped member 2 from being exposed to the outside.

In the embodiment shown in FIGS. 1 and 3 described above, the injected synthetic resin passes through the gap between the yarns of the woven fabric of the mesh and wraps around the back side.
However, the present invention is not limited to this, and an escape hole 26 through which resin can pass may be formed in a portion of the film-like member 2 facing the gate 18 as shown in FIG. In this case, the synthetic resin 27 injected from the gate 18 can easily pass through the escape hole 26 of the film-like member 2 to the back side of the film-like member 2 and evenly spread inside the cavity 6. Here, as shown in FIG. 5, it is preferable to provide a flow hole 40 near the escape hole 26. According to this, the synthetic resin 27 is
In addition, it is possible to easily reach the front and back of the membrane member 2 through the flow hole 40.

Further, in the present embodiment, when the frame-shaped support member 3 is formed by injection molding, the film-shaped member 2 formed in advance is integrated, but the invention is not limited to this. When the frame-shaped support member 3 is formed by another method, the film-shaped member 2 may be integrated. In any case, the appearance of the structure 1 can be improved by preventing the fixing surface of the film-shaped member 2 from being exposed on the surface of the frame-shaped support member 3.

Further, in the above-described embodiment, when the frame-shaped support member 3 is formed by injection molding, the film-shaped member 2 formed in advance is integrated. However, the present invention is not limited to this. After forming, the structure 1
Alternatively, a tension may be applied to exhibit the required elasticity, and the tension may be attached to the frame-shaped support member 3.

For example, as shown in FIG.
Is made up of half members 31 and 32 that are split in half along the longitudinal direction, and a tension is applied to the membrane member 2 so as to exhibit the elasticity required for the structure 1. In this state, the film-like member 2
Is sandwiched between the half members 31 and 32, and the film-like member 2 and the frame-like support member 3 are integrated by welding, bonding, sewing or screwing, and an unnecessary film protruding from the outer surface 3a of the frame-like support member 3. The shape member 2 is cut off.
For this reason, the film-like member 2 is a half member 3
1 and 32, the film-like member 2 protrudes from the outer side surface 3a of the frame-like support member 3, and the film-like member 3
The appearance can be improved without being exposed along the surface.
Also, by cutting off the protruding portion of the film-like member 2 from the root, the end face of the film-like member 2 becomes flush with the surface of the frame-like support member 3 so that the appearance can be improved and the film-like member 2 can be peeled off therefrom. Can be prevented.

The halved members 31 and 32 here can be formed products or extruded materials. In addition, each half member 3
The contact surface between the members 1 and 32 is not limited to a flat surface as shown in FIG. 6 and may be a surface having fine irregularities. in this case,
The force for holding the film-like member 2 can be increased. Further, the half members 31 and 32 may be integrated from the vertical direction as shown in FIG. 6, or may be integrated from the horizontal direction.

Further, by making the sewing thread material or adhesive made of olefin resin or polyester, all the constituent members of the structure 1 can be made of olefin resin or polyester. It can be discarded as it is without being separated, or can be crushed and melted and regenerated as an injection raw material or the like.

Further, the frame-shaped supporting member 3 is
2, the frame-shaped support member 3 is formed as shown in FIG.
A convex portion 31a and a concave portion 32a to be fitted to each other are formed on the respective sandwiching surfaces of the half members 31 and 32 facing each other, and the film-like member 2 is interposed between the convex portion 31a and the concave portion 32a.
May be interposed. According to this, the holding force of the film-shaped member 2 can be further increased. Here, for example, it is preferable to form the projection 31b at the tip of the projection 31a. According to this, by melting the portion of the protrusion 31b, the welding with the concave portion 32a can be performed firmly.
Alternatively, the projection 31b may be pierced into the film-like member 2, and in this case, it is possible to prevent the film 31 from coming off.

Further, as shown in FIGS. 8 and 9, the frame-shaped support member 3 has a shape that is halved along the longitudinal direction, and a locking member 33 is attached to the periphery of the film-shaped member 2. You may do it. In this case, when fixing the film-shaped member 2 to the frame-shaped support member 3, a necessary tension is applied to the film-shaped member 2, and the peripheral edge of the film-shaped member 2 is
It may be sandwiched between the fixing members 32 and welded or adhered or sewn or screwed so that the locking member 33 contacts the outer surface of the frame-shaped support member 3. According to this, both the front and back surfaces of the film-like member 2 can be welded or adhered, sewn or screwed to the frame-like support member 3, and the locking member 33 can be prevented from coming off. Can be strengthened. As shown in FIG. 8, each of the half members 31 and 32 has a U-shaped cross section when combined with an L-shaped cross section. The projecting portion 34 may be formed on one half member 32 as shown in FIG. 9, or the film member 2 may project from the upper portion of the frame-shaped support member 3 as shown in FIG.

As shown in FIG. 10, the frame-shaped support member 3 includes a concave member 36 having a concave groove 35 extending in the longitudinal direction.
A convex member 37 which is press-fitted into the concave groove 35 and fixed may be provided. In this case, when fixing the film-shaped member 2 to the frame-shaped support member 3, a necessary tension is applied to the film-shaped member 2, and the convex member 37 is pressed into the groove 35 while the film-shaped member 2 is inserted. Thus, the film member 2 is sandwiched between the concave member 36 and the convex member 37. Therefore, the convex member 3
7 can be fixed by a simple operation of press-fitting the concave member 36 into the concave member 36 and sandwiching the film-shaped member 2, thereby improving workability.

FIG. 10B shows the direction of press-fitting.
The vertical direction as shown in FIG.
As shown in FIG.

Here, as shown in FIG. 11, an overhang portion 37a is formed at the tip of the convex member 37, and a locking portion 35 is formed so that the overhang portion 37a is caught in the concave groove 35.
a may be formed. In this case, the convex member 37
By hooking the film-like member 2 at the tip of the member and pushing it into the concave groove 35, the convex member 37 is hardly disengaged from the concave groove 35 and the holding force of the film-like member 2 by the convex member 37 and the concave member 36 is increased. Can be.

In the embodiment shown in FIGS. 10 and 11, the film-like member 2 is a member separate from the concave member 36 and the convex member 37, but is not limited to this. The film member 2 is fixed to the convex member 37 in advance, or is fixed to the concave member 36 in advance as shown in FIG.
May be press-fitted into the concave groove 35 and, at the same time, the film-shaped member 2 may be sandwiched between the convex member 37 and the concave member 36 and fixed to the frame-shaped support member 3. According to this, the film-like member 2 can be more easily sandwiched between the convex member 37 and the concave member 36.

Further, as shown in FIG. 14, the frame-shaped support member 3 is made of, for example, metal and plastic, has a hollow shape, and has an opening 38 extending along the longitudinal direction. A locking member 33 having a thickness that can pass through the opening 38 may be attached to the periphery. When fixing the film-shaped member 2 to the frame-shaped support member 3, the locking member 33 is inserted into the frame-shaped support member 3 from the opening 38 while pulling the film-shaped member 2 to give a necessary tension. Is caulked so that the outer diameter is smaller than the outer diameter of the locking member 33. In this case, since the film-like member 2 can be fixed by caulking the frame-like support member 3 into which the locking member 33 is inserted, workability can be improved.

In each of the above-described embodiments, a polyester mesh sheet is used as the film-like member 2. However, the present invention is not limited to this. The film-like heat-shrinkable structure 1 is required. It is sufficient that the sheet has elasticity and strength. For example, a mesh sheet made of nylon can be used. Further, the material is not limited to the mesh sheet, and may be a material having heat shrinkage and having the necessary elasticity and strength as the structure 1, such as a film, vinyl, cloth, or nonwoven fabric. As the film, for example, a polyvinylidene chloride film (trade name: Saran Wrap) can be used.

In each of the above embodiments, the structure 1
Is applied to a chair seat, but is not limited thereto, and may be applied to, for example, a backrest or an elbow panel.

[0062]

As is apparent from the above description, according to the method for manufacturing a structure functioning as a chair seat or a backrest according to the first aspect, the fixing surface between the frame-shaped support member and the film-shaped member. Can be prevented from being exposed to the outside and the edge of the film-like member can be prevented from peeling off along the surface of the frame-like support member, so that the appearance of the structure can be improved.

According to the method for manufacturing a structure functioning as a seat or backrest of a chair according to the second aspect, the center side of the film-like member passes through the center of the inner surface of the frame-like support member in the front-back direction. Since the film-shaped member is to be supported thickly from the front and back sides on the inside of the frame-shaped support member,
The supporting force of the film-like member on the frame-like support member can be increased to increase the load that can be supported by the film-like member. In addition, since the step between the film surface and the upper surface of the frame-shaped support member can be reduced as compared with the case where the film-shaped member is attached to the lower surface of the frame-shaped support member, the sitting comfort can be improved.

Further, according to the method of manufacturing a structure functioning as a chair seat or a backrest according to the third aspect, the cavity is provided with the support member for supporting the film-shaped member away from the mold surface. Therefore, the film-shaped member can be hidden inside the frame-shaped support member to prevent the fixing surfaces from being exposed.

According to the method for manufacturing a structure functioning as a seat or backrest of a chair according to the fourth and fifth aspects, the synthetic resin injected from the gate passes through the relief hole or the flow hole of the membrane member. As a result, it is possible to easily wrap around the back side of the film-shaped member, so that the flow of the synthetic resin can be improved and evenly distributed, and the occurrence of defective products can be suppressed.

On the other hand, according to the method for manufacturing a structure functioning as a seat or backrest of a chair according to the sixth aspect, it is possible to prevent the fixing surface of the film-like member from appearing on the surface of the frame-like support member and to prevent the film from being exposed. Since the edge of the shaped member can be prevented from peeling along the surface of the frame-shaped support member, the appearance of the structure can be improved. Further, the bonding strength can be increased by increasing the area of welding, bonding or sewing compared to welding or bonding or sewing only one side.

According to the method for manufacturing a structure functioning as a seat or a backrest of a chair according to the seventh aspect, the projections fitted to each other fit on the sandwiching surfaces of the frame-shaped support members facing the half-split members. And the concave portion, the fixing force of the film-shaped member can be further increased.

Further, according to the method of manufacturing a structure functioning as a seat or backrest of a chair according to claim 8, it is possible to prevent the fixing surface of the film-like member from appearing on the surface of the frame-like support member and to prevent the film from being exposed. Since the edge of the shaped member can be prevented from peeling along the surface of the frame-shaped support member, the appearance of the structure can be improved. In addition, since the convex member can be fixed by pressing the concave member into the concave member and sandwiching the film-like member, workability can be improved.

Further, according to the method of manufacturing a structure functioning as a seat or backrest of a chair according to the ninth aspect, the membrane member can be easily sandwiched between the concave member and the convex member. .

Further, according to the method of manufacturing a structure functioning as a seat or backrest of a chair according to claim 10,
By hooking the film-like member on the tip of the convex member and pushing the film-like member into the concave groove, it becomes difficult for the convex member to fall out of the concave groove, and it is possible to strengthen the film-like member between the convex member and the concave material.

On the other hand, according to the method for manufacturing a structure functioning as a seat or backrest of a chair according to claims 11 and 12, it is possible to prevent the fixing surface of the film-like member from appearing on the surface of the frame-like support member. At the same time, it is possible to prevent the edge of the film-shaped member from peeling off along the surface of the frame-shaped support member, so that the appearance of the structure can be improved. Further, since unnecessary portions do not appear after the film-shaped member is fixed to the frame-shaped support member, the operation of cutting unnecessary portions can be eliminated, and the operation process can be simplified.

According to the method of manufacturing a structure functioning as a chair seat or a backrest according to the eleventh aspect, the film-like member can be fixed by caulking the frame-like support member into which the locking member is inserted. Therefore, workability can be improved.

According to the method for manufacturing a structure functioning as a chair seat or a backrest according to the twelfth aspect,
Since the front and back surfaces of the film-like member can be welded or adhered, sewn or screwed to the frame-like support member, and the locking member serves as a stopper, the fixing strength of the film-like member can be increased.

On the other hand, according to the structure which functions as a chair seat or a backrest of the chair according to the thirteenth aspect, the fixing surface of the film-like member does not appear on the surface of the frame-like support member, and the peripheral edge of the film-like member peels off. Since it disappears, the appearance of the structure can be improved.

According to the structure functioning as a seat or a backrest of a chair according to the fourteenth aspect, since the elasticity and the air permeability are good, a structure with good sitting comfort can be obtained. Moreover, when the film-shaped member is integrated by injection molding of the frame-shaped support member, the film-shaped member can be firmly integrated with the frame-shaped support member.

According to the method of manufacturing a structure functioning as a chair seat or a backrest according to claim 15,
Since all components of the structure are made of olefin resin or polyester, the structure such as a seat or a backrest and other metal structures such as a pipe frame, a seat receiving member, a leg, a back support rod, and the like. Separation is easy, and it can be recycled as it is in units of structures, or can be easily separated and discarded for recycling.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a state in which a structure of the present invention is injection-molded, (A) showing a state in which a film-like member is attached to a mold, and (B) showing a state in which the structure is completed. .

FIG. 2 is a partially cut perspective view showing a structure.

FIGS. 3A and 3B are longitudinal cross-sectional side views showing a state in which the structure is manufactured by using a mold having another shape. FIG. 3A shows a state in which a film-like member is attached to the mold, and FIG.

FIGS. 4A and 4B are longitudinal sectional side views showing a state of manufacturing with a mold having still another shape, wherein FIG. 4A shows a state in which a film-like member is attached to the mold, and FIG. .

FIG. 5 is a perspective view showing a film-like member having an escape hole and a flow hole.

FIG. 6 is a longitudinal sectional side view showing another structure, and FIG.
Indicates before the combination of the half-split members, and (B) indicates after the combination.

FIG. 7 is a vertical sectional side view showing still another structure,
(A) shows the state before the combination of the half members, and (B) shows the state after the combination.

FIG. 8 is a longitudinal sectional side view showing another structure,
(A) shows the state before the combination of the half members, and (B) shows the state after the combination.

FIG. 9 is a longitudinal sectional side view showing another structure,
(A) shows the state before the combination of the half members, and (B) shows the state after the combination.

FIG. 10 is a longitudinal sectional side view showing still another structure, in which (A) shows a state before a combination of a convex member and a concave member,
(B) shows the state after the combination in the vertical direction, and (C) shows the state after the combination in the horizontal direction.

FIG. 11 is a longitudinal sectional side view showing still another structure.

FIG. 12 is a longitudinal sectional side view showing still another structure, in which (A) is a view before a combination of a convex member and a concave member,
(B) shows the state after the combination.

FIG. 13 is a longitudinal sectional side view showing a structure having another shape, in which (A) is a view before a combination of a convex member and a concave member,
(B) shows the state after the combination.

14A and 14B are longitudinal sectional side views showing a structure having another shape, wherein FIG. 14A shows a state before the combination of the frame-shaped support member and the locking member, and FIG. 14B shows a state after the combination.

FIG. 15 is a perspective view showing a conventional pipe frame chair.

16 is a longitudinal sectional view showing a state cut along a line VV in FIG. 15;

FIG. 17 is a longitudinal sectional front view showing a conventional structure manufacturing apparatus.

FIG. 18 is a perspective view showing a part of a conventional structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Structure 2 Membrane member 2a Peripheral side of membrane member 2b Center side of membrane member 3 Frame support member 3c Edge of frame support member 6 Cavity 7 Upper die 8 Lower die 10 Core pin (Supporting member) 18 Gate 26 Escape hole 31 Half member of frame-shaped support member 32 Half member of frame-shaped support member 31a Convex portion 32a Recess 33 Lock member 35a Lock portion 36 Recess material 37 Convex member 37a Overhang portion 38 opening 40 circulation hole

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B29C 45/26 B29C 45/26 B68G 11/02 B68G 11/02 // B29K 105: 20 B29K 105: 20 B29L 31:44 B29L 31:44 F term (reference) 3B084 EC01 EC04 3B096 AB08 AD04 4F202 AD16 AH51 CA11 CB01 CB12 CQ03 CQ05 4F206 AD16 AH51 JA07 JB12 JW23

Claims (15)

[Claims] 1. A frame-like member such as a mesh or a film or a cloth or a non-woven fabric and a frame-like support member made of a synthetic resin for holding a peripheral edge thereof. In the method of manufacturing a functioning structure, a tension is applied to a mold for insert-molding the frame-shaped support member using the film-shaped member as a core material so that the film-shaped member exhibits elasticity required for the structure. In such a state, the film-shaped member makes no contact, point contact or line contact with the mold surface forming the cavity of the mold, and the peripheral side of the film-shaped member passes through the edge of the frame-shaped support member. Installed, the synthetic resin is injected into the cavity of the mold, cured and molded with the frame-shaped support member, and simultaneously integrated with the film-shaped member, from the periphery of the frame-shaped support member. A method for manufacturing a structure functioning as a chair seat or a backrest, wherein the protruding film-like member is cut off. 2. A structure functioning as a seat or backrest of a chair according to claim 1, wherein a center side of said film-like member passes through a central portion in a front-to-back direction of an inner surface of said frame-like support member. Method of manufacturing a product. 3. The chair according to claim 1, wherein the cavity is provided with a support member for supporting the film-shaped member away from a mold surface. Method of manufacturing a structure. 4. An escape hole through which the synthetic resin can pass is formed in a portion of the film-like member facing the gate of the mold. A method for manufacturing a structure that functions as a chair seat or a backrest. 5. The method for manufacturing a structure functioning as a seat or backrest of a chair according to claim 4, wherein a flow hole through which the synthetic resin can pass is formed near the escape hole. . 6. A structure comprising a membrane member such as a mesh or a film, a fabric, or a non-woven fabric and a frame-like support member for holding a peripheral edge thereof, and being assembled to a chair frame to function as a seat or a backrest of the chair. In the manufacturing method, the frame-shaped support member is formed of a half member that is split in half along the longitudinal direction, and in a state where the film-shaped member is given a tension to exhibit the elasticity required as the structure, The film-shaped member sandwiched between the half-split members, and the film-shaped member and the frame-shaped support member are integrated by welding, bonding, sewing, or screwing, so that the film-shaped member protrudes from a peripheral edge of the frame-shaped support member. A method for producing a structure that functions as a chair seat or a backrest, etc. 7. The chair seat according to claim 6, wherein a convex portion and a concave portion that fit with each other are formed on a sandwiching surface of the frame-shaped support member facing the half member. Alternatively, a method of manufacturing a structure that functions as a backrest or the like. 8. A structure comprising a mesh member, a film member such as a film, a fabric, and a non-woven fabric, and a frame-shaped support member for holding a peripheral edge thereof, and is assembled to a chair frame to function as a seat or backrest of the chair. In the manufacturing method, the frame-shaped support member includes a concave member having a concave groove along a longitudinal direction, and a convex member press-fitted into the concave groove and fixed, and as the structure in the film-shaped member. In a state where a tension for exerting necessary elasticity is given, the film-like member and the frame-like support member are integrated by sandwiching the film-like member and pressing the convex member into the concave groove. A method for producing a structure that functions as a chair seat or a backrest, etc. 9. The structure according to claim 8, wherein the film-like member is fixed to one of the concave member and the convex member in advance. Production method. 10. An overhang portion is formed at a tip portion of the convex member, and a locking portion is formed in the concave groove so that the overhang portion is caught and prevented from falling off. The method for producing a structure functioning as a seat or a backrest of a chair according to claim 8 or 9. 11. A structure comprising a membrane member such as a mesh or a film, a fabric, or a non-woven fabric and a frame-like support member for holding a peripheral edge thereof, and being assembled to a chair frame to function as a seat or backrest of the chair. In the manufacturing method, the frame-shaped support member has plasticity, is hollow and has an opening extending in the longitudinal direction, and a peripheral edge of the film-shaped member has a thickness that can pass through the opening. A stop member is attached, and by inserting the locking member of the film-like member through the opening into the inside of the frame-like support member, a tension is exerted on the film-like member to exhibit the elasticity required for the structure. A chair, wherein the frame-shaped support member is caulked so that the opening is smaller than the outer diameter of the locking member, and the film-shaped member and the frame-shaped support member are integrated. A method for manufacturing a structure that functions as a seat or backrest of a vehicle. 12. A structure comprising a membrane member such as a mesh or a film, a fabric, or a non-woven fabric and a frame-like support member for holding a peripheral edge thereof, and assembled to a chair frame to function as a seat or backrest of the chair. In the manufacturing method, the frame-shaped support member is formed of a half member that is split in half along the longitudinal direction, and a locking member is attached to a periphery of the film-shaped member, and the structure is attached to the film-shaped member. As a result, the peripheral edge of the film-shaped member is sandwiched between the half-split members, and the locking member is welded so as to abut on the outer surface of the frame-shaped support member. Alternatively, a method of manufacturing a structure functioning as a chair seat or a backrest, wherein the film-shaped member and the frame-shaped support member are integrated by bonding, sewing, or screwing. 13. A chair seat or a backrest manufactured by using the method for manufacturing a structure functioning as a chair seat or a backrest according to any one of claims 1 to 12. A structure that functions as an etc. 14. The structure functioning as a seat or backrest of a chair according to claim 13, wherein said membrane member is a mesh sheet. 15. The structure according to claim 13, wherein all the structural members are made of an olefin resin.
A structure that functions as a seat or backrest of the chair described in the above.