JP4497629B2 - Chair structure such as seat or backrest - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair structure such as a seat or a backrest, which includes a membrane member such as a mesh, a film, or a fabric, and a frame-like support member that holds the periphery of the membrane member. More specifically, the present invention relates to an improvement in the support structure of the membrane member, for example, in the front drooping portion of the seat where the back of the thigh of the seated person hits or the upper end portion or lower end portion of the backrest where the upper portion or lower back portion of the seat hits. .
[0002]
[Prior art]
In recent years, a chair having a seat 102 as shown in FIG. 16 composed of a film-like member 100 and a frame-like support member 101 that holds the periphery thereof has been proposed. The film-like member 100 is configured to form a support surface 103 that supports the seated person's body by exhibiting the elasticity required for the seat 102 by being pulled from the periphery by the frame-like support member 101. In this type of seat 102, it is desirable to form a front drooping portion 104 formed of a curved surface at the front end portion of the seat 102 so that the thigh is not compressed at the front end of the seat 102 when seated.
[0003]
There has also been proposed a chair having a backrest including a membrane member and a support frame for holding the periphery thereof. Also in this case, it is desired to form a curved surface portion (hereinafter also referred to as a drooping portion) so as not to press the body of the seated person on the upper end or the lower end of the backrest against which the back or the waist hits.
[0004]
[Problems to be solved by the invention]
However, in the seat 102 having the above-described structure, the tension of the film-like member 100 is reduced due to shrinkage of the frame-like support member 101 after molding, or the film-like member 100 is left and right of the frame-like support member 101 near the front hanging portion 104. Since it is only supported by the holding side 101a, the tension is lost as the distance from the holding sides 101a on both sides is increased, and the shape is easily loosened. In particular, the film-like member 100 in the central portion of the front drooping portion 104 is loosened with no tension as compared to the portion that is strongly affected by the support of the holding sides 101a on both sides and maintains its shape. As shown in FIG. 17, it is almost linear.
[0005]
Accordingly, the thigh of the seated person is pressed against the lateral side (between the body of the seated person) 101b of the hard frame-like support member 101, and the sitting comfort is deteriorated. In addition, even when the chair is not used, the membrane member 100 of the front hanging portion 104 is likely to be loosened and recessed, and the appearance of the chair is also deteriorated.
[0006]
In order to solve this problem, a seat 102 has been developed in which urethane is packed in the entire back side of the front drooping portion 104 or a membrane band 100 is reinforced by applying a rubber band. However, this requires an additional reinforcing member, which increases the number of parts and increases the assembly process. Further, if urethane or a rubber band is provided on the back of the membrane member 100 in order to maintain the shape of the front drooping portion 104, an advantage that the membrane 102 and the frame-like support member 101 constitute the seat 102 is that air permeability is impaired. Will be partially damaged.
[0007]
Similarly, even when a structure including a film-like member and a frame-like support member is used for the backrest, the drooping portion of the film-like member at the upper end of the backrest is crushed and the upper end of the frame-like support member is collapsed. Because the neck and neck of the side of the sword will hit, it is not comfortable. In order to avoid this, the upper end of the frame-shaped support member, that is, the upper horizontal side portion may be a tall backrest that is positioned above the seated person's head, but this makes the chair very large or designed Will also be limited.
[0008]
SUMMARY OF THE INVENTION Accordingly, the present invention provides a chair structure such as a seat or a backrest that can improve the sitting comfort and the comfort of the sitting, improve the appearance while maintaining the shape of the curved surface or the bent surface, and increase the degree of freedom of design. With the goal.
[0009]
[Means for Solving the Problems]
  In order to achieve this object, the invention according to claim 1 is a frame-shaped support member that holds the periphery of the membrane member, such as a mesh or film or fabric, which constitutes a support surface that supports the body of the seated person. In a chair structure such as a seat or a backrest withA support portion made of an elastically deformable tongue piece is provided, and the membrane member is supported by the support portion.
  As a result, the support surface for supporting the body of the seated person of the film-like member whose periphery is held by the frame-like support member is also elastically supported by the support part, and the weight of the seated person is reduced between the film-like member and the support part. Be shared.
In addition, since the tension of the membrane member can be changed by changing the shape, thickness, position, or the like of the support portion, a plurality of types of structures having different tensions can be easily provided.
[0010]
  In the invention according to claim 2, in the structure of the chair such as the seat or the backrest according to claim 1, the shape is arranged between two holding sides sandwiching a part of the side of the frame-shaped support member. A support portion that supports a curved surface or a bent surface portion of the membrane-like member that connects a part of the side and the support surface between the two holding sides is provided on the part of the side.
  Therefore, the curved or bent surface portion of the film-like member near a part of the side of the frame-like support member is supported with a short span by the holding sides and the support portions on both sides, so that the elasticity of the film-like member is enhanced. Support the seated person's body without losing. For this reason, when the seated person puts weight on the structure, the weight is elastically supported by the curved surface or the bent surface portion of the membrane member, and in some cases, directly supported by the support portion. This prevents the seated person's body from being pressed against a part of the frame-shaped support member while being supported with good cushioning properties near the end of the support member, and is also a curved surface or bent surface of the film-shaped member. You can keep the shape of the part.
[0012]
  Claims3The described invention is claimed.1 or 2In the chair structure such as the seat or the backrest described above, a part of the side is a side where the body of the seated person of the frame-shaped support member intersects, and the position away from the support surface is not in direct contact with the body. It is designed to be formed.
[0013]
Therefore, the curved or bent surface portion of the membrane-like member near the side of the frame-like support member that intersects the seated person's body is supported by a short span by the holding sides and the support portions on both sides. Therefore, the seated person's body can be supported at a position away from some sides without losing the elasticity of the tension of the membrane member. Accordingly, the body of the seated person can be prevented from being pressed against a part of the frame-shaped support member, and the shape of the film-shaped member in the vicinity of the drooping / end portions of the frame-shaped support member can be maintained.
[0014]
  Claims4The described invention is claimed.Any one of 1 to 3In the structure of the chair such as the seat or the backrest described in the above, the membrane support surface that supports the membrane member of the support portion and the portion that forms the curved surface or the bent surface portion of the membrane member on the front side surface of the holding side I try to be one. Therefore, since the curved surface or the bent surface portion of the film-like member is supported at the same height as the holding side by the support portion, a feeling of falling can be prevented while maintaining the cushioning property of the curved surface or the bent surface portion.
[0015]
  And claims5The described invention is claimed.Any one of 1 to 4In the structure of a chair such as a seat or backrest,Is selfIt is formed so as to be gradually thinner toward the end side. In this case, the support portion is elastically deformed by the weight of the seated person. For this reason, when, for example, the drooping portion that is the end of the support surface and the membrane member in the vicinity thereof are recessed due to the body weight of the seated person, the support portion bends to support the membrane member, or the support portion directly supports the weight. It becomes like this. As a result, the seated person is given a good cushion feeling, and the film-like member is gently deformed without forming a step around the support portion, so that the entire structure has a uniform cushioning property. Becomes able to support the body without local pressure.
[0016]
  Claims6The described invention is claimed.Any one of 1 to 5In the chair structure such as the seat or the backrest, the support portion is thinner than the frame-shaped support member.II am doing it. Therefore, since the support portion is elastically deformed by the weight of the seated person, when the seated person is seated, the support portion bends and supports the membrane member by the weight, or the support portion directly supports the weight, The entire structure has a uniform cushioning property and can support the body without being locally compressed.
[0017]
  And claims7The described invention is claimed.Any one of 1 to 6In the structure of the chair such as the seat or the backrest described above, a rib is provided on the back side of the base end portion of the support portion. Accordingly, it is possible to reinforce the base end portion of the support portion where stress is easily concentrated and prevent the support portion from being damaged. In addition, since the rib is not formed at the tip of the support part, the rigidity becomes smaller toward the tip of the support part, and the flexibility of the support part can be maintained.
[0018]
  Meanwhile, claims8The described invention is claimed.Any one of 1 to 7In the chair structure such as the seat or the backrest described above, the frame-like support member and the support portion are integrally formed of synthetic resin. In this case, since the frame-shaped support member and the support portion are formed at a time by injection molding or the like, manufacture of a chair structure such as a seat or a backrest is facilitated.
[0019]
  Claims9The described invention is claimed.Any one of 1 to 8In the chair structure such as the seat or the backrest as described, the film-like member is integrally formed when the frame-like support member is formed. Therefore, since the frame-like support member and the film-like member are molded at once by injection molding or the like, the manufacture of the chair structure is facilitated.
[0020]
  And claims10The described invention is claimed.Any one of 1 to 9In the structure of the chair such as the seat or the backrest, the support part isConsists of deformation of some sides themselvesI am doing so. In this case, since the support portion and a part of the side are shared, a chair structure with a novel design can be obtained.
[0021]
  On the other hand, the claim11The described invention is claimed.Any one of 1 to 10In the chair structure such as the seat or the backrest, the front side surface of the structure has an attachment portion to which an edge of the membrane member is attached and a peripheral portion located around the attachment portion, and the attachment portion; It is designed to be flush with the surrounding area. Therefore, since the edge of the film-like member and the peripheral part of the frame-like support member are flush with each other and no unevenness occurs at the edge of the film-like member, the surface of the structure can be flattened and the sitting comfort can be improved. Can do.
[0022]
  And claims12The described invention is claimed.Any one of 1 to 11In the structure of the chair such as the seat or the backrest described above, a plurality of support portions are provided. In this case, since the curved surface or the bent surface portion of the membrane member can be supported with a shorter span, the weight of the seated person can be more effectively dispersed, and the curved surface or the bent surface portion of the membrane member can be dispersed. You can keep the shape.
[0023]
  Claims13The described invention is claimed.Any one of 1 to 11In the chair structure described above, the structure is a seat, a part of the side is a lateral side of the front end of the frame-shaped supporting member, and a supporting part is formed in the center of the lateral side, and a film-like member is formed at the front hanging part. To support.
[0024]
Therefore, the membrane member in the vicinity of the front drooping portion is supported with a short span by the holding sides on both sides of the frame-like support member and the support portions between them, so that the elasticity of the tension of the membrane member is not lost. Can be supported. Accordingly, the thigh of the seated person can be prevented from being pressed against the frame-shaped support member, and the shape of the front hanging portion can be maintained.
[0025]
Moreover, since the support portion is formed at the front hanging portion from the center of the front side of the frame-like support member to the front end of the support surface, it is located between the thighs of the seated person. Therefore, the thigh of the seated person is not pressed against the support portion.
[0026]
  Claims14The described invention is claimed.Any one of 1 to 11In the chair structure described above, the structure is a seat, a part of the side is a lateral side of the front end of the frame-shaped supporting member, and a plurality of supporting parts are formed on the lateral side, and the front hanging part is a film-like member To support. Therefore, the curved surface portion or the bent surface portion of the membrane member can be supported with a shorter span, and the weight of the seated person can be directly supported by the support portion, so that the weight can be more effectively dispersed.
[0027]
  And claims15The described invention is claimed.Any one of 1 to 11In the described structure, the structure is a backrest, and some of the sides are either the upper side or the lower side of the frame-like support member, or both sides, and the support portion on the horizontal side extends from the center to the left and right. Formed apart,Membrane member is supported by the supportLike to do.
[0028]
Therefore, the membrane member constituting the curved or bent surface portion of the upper end or the lower end of the backrest is supported with a short span by the holding sides on both sides of the frame-like support member and the left and right support portions arranged therebetween. Therefore, the back can be elastically supported without losing the tension of the membrane member. This prevents the seated person's back, neck and waist from being pressed against the lateral side of the frame-like support member, and can maintain the shape of the curved or bent surface at the upper or lower end of the backrest.
[0029]
In addition, since the support portions are formed to be distributed to the left and right except the central portion of the horizontal side, they are located on both sides avoiding the back of the seated person. Therefore, the seated person's spine is unlikely to hit the support portion.
[0030]
  And claims16The described invention is claimed.Any one of 1 to 11In the structure described above, the structure is a backrest, and a part of the side is one or both of the upper end and the lower end of the frame-like support member, and a support portion is formed at the center of the side. ,Support the membrane member with the supportI am doing so.
[0031]
Therefore, the curved surface or the bent surface portion at the upper end or the lower end of the backrest is elastically supported and reinforced by the support portion, so that the back and the waist can be firmly supported and the shape of the curved surface or the bent surface portion can be maintained.
[0033]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail based on embodiments shown in the drawings.
[0034]
1 to 4 show an embodiment in which the chair structure of the present invention is applied to a seat. This structure includes a membrane-like member 3 such as a mesh or a film or a fabric that constitutes a support surface 6 that supports the body of a seated person, and a frame-like support member that holds the periphery of the membrane-like member 3 (hereinafter referred to as a support frame). The seat 2 is provided with 4). The seat 2 is a film that connects the horizontal side 8 and the support surface 6, whose shape is adjusted between the vertical sides 7 that are two holding sides that sandwich the horizontal side 8 that is a part of the support frame 4. A support portion (hereinafter referred to as a support piece) 9 that supports the curved surface or the bent surface portion 10 of the shaped member 3 between the two vertical sides 7 is provided on the horizontal side 8. Therefore, the curved or bent surface portion 10 of the film-like member 3 near the lateral side 8 of the support frame 4 is supported with a short span by the vertical sides 7 on both sides of the support frame 4 and the support pieces 9 therebetween. Therefore, the body of the seated person can be elastically supported without losing the tension of the membrane member 3. When the seated person puts his / her weight on the seat 2, the weight is elastically supported by the curved surface or the bent surface portion 10 of the film-like member 3, and in some cases, directly supported by the support piece 9. Become. Accordingly, the seated person's body is prevented from being pressed against the lateral side 8 of the support frame 4 to improve the sitting comfort, and the shape of the curved surface or the bent surface portion 10 of the membrane member 3 can be maintained. .
[0035]
In the present embodiment, the front lateral side 8 is a side where the body of the seated person of the support frame 4 intersects, and is formed at a position away from the support surface 6 and not in direct contact with the body. For this reason, the curved surface or the bent surface portion of the film-like member 3 forms the front hanging portion 10.
[0036]
Here, the “part of the side” of the support frame 4 mainly means a side formed at a position where the body of the seated person intersects and is away from the support surface 6 and is not in direct contact with the body. However, the present invention is not limited to this example. For example, the upper side 27 shown in FIG. 15 includes the side that forms the curved surface or the bent surface of the membrane member together with the vertical side 27 that is the holding side while contacting the body. It is supposed to be. Further, some of the sides are the horizontal sides 8 and 28 of the rectangular support frames 4 and 24 as shown in FIGS. 1 to 15, or a triangular, pentagonal, or circular support frame (not shown). )) So that the body of the seated person intersects the hypotenuse or arc side. On the other hand, the “holding sides” of the support frame 4 are a pair of “supporting sides” that are continuous to both ends of the “partial sides” and that form a curved surface portion or a bent surface portion of the membrane member together with the support portion. It means a side.
[0037]
Note that the seat 2 of the present embodiment is applied to a stackable fixed chair, and is directly assembled to the frame 5 of the chair 1.
[0038]
Here, the support piece 9 is provided at the center of the lateral side 8 in front of the support frame 4. The support piece 9 has a curved shape identical to the curved shape of the vertical side 7 rising from both ends of the horizontal side 8, and has a smooth tongue shape on both sides, which extends toward the support surface 6 formed away from the horizontal side 8. And is provided so as to support the curved surface / front sagging portion 10 of the film-like member 3. Here, as shown in FIGS. 2 and 4, the membrane support surface 9 a that supports the membrane member 3 of the support piece 9 and the portion 7 a that forms the front hanging portion 10 of the membrane member 3 on the front side of the vertical side 7 are as follows. I try to be the same. That is, the support piece 9 extends upward from the center of the lateral side 8 and bends the upper part thereof rearward so that the front surface is flush with the front surfaces of the left and right vertical sides 7 of the support frame 4 and the upper surface is the support frame 4. It is formed so as to have the same height as the upper surface of the left and right vertical sides 7. For this reason, as shown in FIG. 4, the film-like member 3 at the front end portion of the support surface 6 can be maintained horizontally to improve the appearance, and it can be felt when the front hanging portion 10 is supported lower than the vertical side 7. A feeling of falling can be prevented. Further, the portion extending rearward of the support piece 9 has such a length that it does not penetrate deeply into the support surface 6, specifically, the length so that the crotch of the seated person does not hit the support piece 9. Thereby, it is possible to prevent a decrease in sitting comfort due to the crotch of the seated person hitting the support piece 9.
[0039]
Further, the support piece 9 is formed so as to be gradually thinner toward the free end side, and more preferably, gradually thinner toward the both ends in the width direction. In this case, as shown by a two-dot chain line in FIG. 3, since the film-like member 3 is easily deformed and elastic as it goes toward the tip, when the film-like member 3 is deformed, the film-like member 3 is bent accordingly and a step is formed between the film-like member 3. It does not occur. Therefore, since the film-like member 3 in the vicinity of the front hanging portion 10 that supports the thigh at the time of sitting is gently deformed without forming a step around the support piece 9, the thigh can be supported without being compressed. Therefore, the thigh is elastically supported by the membrane member 3 and the support piece 9 in the vicinity of the front drooping portion 10 and does not hit the lateral side 8.
[0040]
In this embodiment, the shape of the support piece 9 viewed from the front is substantially rectangular as shown by a solid line in FIG. However, the shape is not limited to a rectangle, and may be substantially trapezoidal as shown by a two-dot chain line in FIG. Thus, the strength of elasticity of the support piece 9 can be adjusted by appropriately setting the width, shape, thickness, and material of the support piece 9. For this reason, the support piece 9 can be formed so as to obtain optimum elasticity as the film-like member 3 in the vicinity of the front hanging portion 10.
[0041]
The support frame 4 and the support piece 9 are integrally formed of a thermoplastic synthetic resin such as polypropylene made of a single material, for example. And the support frame 4 and the support piece 9 are made into the integrally molded product integrated with the periphery of the film-like member 3 by injection molding etc. For this reason, since the seat 2 can be easily manufactured, mass production can be easily performed and the cost can be reduced.
[0042]
Further, it is preferable to use a mesh cloth (for example, trade name “Dimetrole” manufactured by DuPont) as the membrane member 3. In this embodiment, the membrane member 3 is a mesh cloth. However, the present invention is not limited to this. A net material or a film made of a synthetic resin such as polyester, which has elasticity and can support the weight of a seated person, a film, vinyl, leather, cloth, Other materials such as a wire mesh may be used.
[0043]
In the seat 2, the film-like member 3 is integrally formed so as to be attached to the entire upper surface of the support frame 4. Therefore, since the support piece 9 is pressed from the upper side when the thigh of the seated person pushes down the film-like member 3 in the vicinity of the front drooping portion 10, even if the film-like member 3 and the support piece 9 are separated from each other, the film The shaped member 3 is supported by a support piece 9. Here, when the seat 2 is attached to the frame 5, it is preferable to provide a cover member that covers the integrated portion of the support frame 4 and the membrane member 3. In this case, since the integrated portion can be covered by the cover member, the appearance can be further improved.
[0044]
The seat 2 is used as it is as the seat of the chair 1, but in some cases, a skin member may be attached so as to cover the whole of the membrane member 3 and the upper surface and the outer surface of the support frame 4. In this case, the peripheral portion of the film-like member 3 exposed on the upper surface of the support frame 4 can be hidden, and the appearance of the seat 2 can be changed to an arbitrary color or pattern by selecting the skin member. It is also possible to fill a thin urethane foam between the skin member and the membrane member 3.
[0045]
The frame 5 of the chair 1 is assembled by welding pipes. The frame 5 includes, for example, a seat receiving portion 11 that supports the seat 2 and a backrest support portion 13 that supports the backrest 12 by inserting it from above. The shape of the legs and other parts of the frame 5 is not particularly limited. For example, as shown in FIG. 1, so-called circle legs formed by bending right and left pipes into a rectangular shape are used. It is good also as what is called four legs made to consist of a separate vertical pipe. Further, a so-called cantilever-type leg in which one pipe is bent to form a leg portion, a seat receiving portion, and a back support rod portion may be used. Moreover, although it is set as the chair 1 which has the backrest 12 in this embodiment, you may make it the chair 1 which does not have this but the backrest 12 without being limited to this.
[0046]
Here, the means for fixing the support frame 4 of the seat 2 to the seat receiving portion 11 is not particularly limited. For example, an attachment groove 18 formed on the back side of the support frame 4 is fitted into the seat receiving portion 11 as shown in FIG. They may be screwed while being positioned, or may be hooked on the support frame 4 with one click by a locking claw that is integrally formed with or attached to the support frame 4. In any case, since the support frame 4 and the frame 5 can be fixed, it is possible to prevent the support frame 4 from being displaced with respect to the frame 5 even if the membrane member 3 is pulled by the weight of the seated person.
[0047]
On the other hand, the backrest 12 is sewn to the membrane member 14 made of mesh that supports the back, the edge cloth 15 sewn around the periphery of the film member 14, and the left and right edge cloths 15 of the membrane member 14. And a fixed bag 16 made of cloth with its upper portion closed. The backrest 12 is fixed to the chair 1 by inserting the left and right fixing bags 16 into the backrest support portion 13 of the frame 5. In the present embodiment, the backrest 12 is made of mesh and fixed by being inserted into the frame 5. However, the present invention is not limited to this, and the backrest 12 itself does not limit the configuration of the present invention. Various configurations of the backrest 12 can be used.
[0048]
The seat 2 configured as described above is formed by, for example, insert molding. For example, the film-like member 3 is hooked on a protrusion that holds the film-like member 3 formed inside the injection-molding mold and is set in the mold. Alternatively, the film-like member 3 is held outside the mold. At this time, a pretension required for the seat 2 is given to the membrane member 3.
[0049]
Then, the support frame 4 is injection-molded while the film-shaped member 3 is housed in the cavity of the mold, and the support frame 4 is molded in a state of being integrated with the film-shaped member 3. Thereby, the seat 2 as an integrally molded product in which the support frame 4 and the support piece 9 and the film-like member 3 are firmly integrated can be easily obtained. Further, the method of integrally forming the support frame 4 with the film-like member 3 is not limited to the injection molding method, and may be other methods such as a compression molding method and a casting method.
[0050]
In the chair 1 in which the seat 2 is assembled, the thigh of the seated person is elastically supported by the film-like member 3 supported and stretched by the left and right vertical sides 7 of the support frame 4 and the support pieces 9 arranged therebetween. Is done. For this reason, it is possible to improve the sitting comfort by preventing the thigh from being pressed against the lateral side 8. Moreover, since the support piece 9 is formed in the front drooping portion 10 from the center of the lateral side 8 to the front end of the support surface 6 and is located between the thighs of the seated person, the thigh of the seated person hits the support piece 9 and is compressed. There is nothing to do.
[0051]
Furthermore, since the support interval can be reduced to half or less compared to the case where the membrane member 3 is supported only by the left and right vertical sides 7 of the support frame 4 in the vicinity of the front drooping portion 10, the shape of the front drooping portion 10 can be maintained. it can. For this reason, an appearance is not spoiled by the sag of the center part of the front drooping part 10.
[0052]
In addition, the seating comfort and appearance can be improved without using a separate member such as urethane or a rubber band, so that the product cost can be kept low without increasing the number of parts.
[0053]
The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. For example, in this embodiment, the thickness of the support piece 9 is gradually reduced toward the tip. However, the thickness is not particularly limited to this, and the whole may have a uniform thickness. In this case, the support piece 9 is preferably thinner than the support frame 4 to have flexibility as shown in FIG. In this case as well, the membrane member 3 is stretched between the left and right vertical sides 7 of the support frame 4 and the support piece 9 and can elastically support the thigh. Here, when the support piece 9 is made thinner and uniform than the support frame 4 as described above, a rib 17 is provided on the back side of the base end portion of the support piece 9 to reinforce as shown in FIGS. Is preferred. According to this, it is possible to reinforce the base end portion of the support piece 9 where stress is likely to concentrate and prevent the breakage of the support strip 9. In addition, since the rib 17 is not formed at the distal end portion of the support piece 9, the rigidity of the support piece 9 decreases as the distal end of the support piece 9 can maintain the flexibility of the support piece 9. Moreover, as a matter of course, the rib 17 may be formed on the back side of the base end portion of the support piece 9 in which the distal end side shown in FIGS.
[0054]
Furthermore, in the above-described embodiment, only one support piece 9 is provided. However, the present invention is not limited to this, and a plurality of support pieces 9 may be provided intermittently as shown in FIG. In this case, the front drooping portion 10 of the membrane-like member 3 can be supported with a shorter span, and the weight of the seated person can be directly supported using at least a part of the support pieces 9. And the shape of the front hanging portion 10 of the film-like member 3 can be maintained.
[0055]
In the above-described embodiment, the support portion is formed of the tongue-shaped support piece 9, but is not limited thereto, and the support portion 9 is curved in a U shape along the support surface 6 as shown in FIG. 8. For example, it may be composed of the front side 8. In this case, since the support portion 9 and the lateral side 8 are also used, the chair seat 2 having a novel design can be obtained.
[0056]
In the above-described embodiment, the membrane member 3 is attached to the entire upper surface of the support frame 4. However, the present invention is not limited to this, and the membrane member 3 may be attached to a part of the upper surface of the support frame 4. . In this case, for example, like the seat 2 shown in FIGS. 7 to 10, the attachment portion 20 to which the edge portion 19 of the membrane member 3 is attached, and the membrane member 3 is attached around the attachment portion 20. The mounting portion 20 and the peripheral portion 21 are flush with each other so that the peripheral portion 21 is not present. According to this, since the edge of the film-like member 3 does not cause unevenness on the seating surface 6 of the seat 2, the seating surface 6 can be made flat and the sitting comfort can be improved. Moreover, since the membrane member 3 is not integrated in the peripheral portion 21 and the smooth surface of the synthetic resin is exposed, the appearance of the seat surface 6 is trimmed and the appearance of the seat 2 can be improved. .
[0057]
In this case, the attachment portion 20 formed on the front side 8 is preferably wider than the attachment portion 20 formed on the other side 7. According to this, since the fixing force between the front side 8 and the membrane member 3 is increased, it is possible to prevent the membrane member 3 in the vicinity of the side 8 where the load is most likely to be peeled off.
[0058]
In this embodiment, the membrane member 3 is integrally formed as if it were adhered to the upper surfaces of the support frame 4 and the support piece 9. However, the present invention is not limited to this, and the membrane member 3 is placed in the support frame 4. You may make it integrally form so that it may embed. Further, the location where the membrane member 3 and the support frame 4 are integrated or joined is not limited to the upper surface or the inside of the support frame 4 as in the present embodiment, but may be the lower surface or the back surface of the support frame 4. In this case, the integrated part of the membrane member 3 to the support frame 4 can be hidden from the seated person, so that the appearance can be improved.
[0059]
Further, the method for integrating the membrane member 3 with the support frame 4 and the support piece 9 is not limited to the integral molding by injection molding as described above, and the support frame 4 and the membrane member 3 are integrated. Various techniques can be applied. For example, the film-like member 3 and the support frame 4 are formed separately, and the periphery of the film-like member 3 is integrated with the surface of the support frame 4 by bonding with an adhesive, screwing with a bolt, or stapling. Anyway. Alternatively, the support frame 4 having protrusions on the surface may be formed, and the periphery of the film-like member 3 may be hooked and integrated with the protrusions. In these cases, the membrane member 3 covers the front side of the support piece 9 or is attached to the back side of the support piece 9 by bonding or the like, and the weight of the thigh is supported by the support piece 9 via the membrane member 3. Like that. Furthermore, the support frame 4 may be formed in half along the longitudinal direction, and the peripheral edge of the film-like member 3 may be sandwiched therebetween to be integrated by bonding, screwing, or fitting. In the case of forming the support frame 4 in half, a convex part and a concave part that fit each other are formed on each sandwiched surface facing the half of the support frame 4, and between the convex part and the concave part. The film-like member 3 may be sandwiched. According to this, the holding force of the film-like member 3 can be further increased.
[0060]
Further, a groove or claw for assembling to the chair frame 5 may be provided in the support frame 4, and the support frame 4 may be assembled to the frame 5 with the film-like member 3 being sandwiched between the groove or claw. . At this time, for example, the periphery of the film-like member 3 is wound around the frame 5 in advance, and the support frame 4 is fitted from above, or the periphery of the film-like member 3 is put in the groove of the support frame 4 in advance. The support frame 4 may be fitted to the frame 5 in the state of being placed. In this case, the membrane member 3 covers the front side of the support piece 9 or is attached to the back side of the support piece 9 by adhesion or the like so that the weight of the thigh is supported by the support piece 9 through the membrane member 3. To. In this case, the support frame 4 and the frame 5 may be fixed with a fitting tightening force, or the support frame 4 and the frame 5 may be fixed by screwing or the like. When the support frame 4 and the frame 5 are fixed by screwing or the like, the holding force of the film-like member 3 can be further increased by passing a screw bolt through the film-like member 3. Further, by forming a convex portion and a concave portion that are fitted to each other between the groove of the support frame 4 and the frame 5, the film-like member 3 can be sandwiched between the convex portion and the concave portion. The holding force of the member 3 can be further increased.
[0061]
In this embodiment, the support frame 4 and the support piece 9 are made of a thermoplastic synthetic resin, but the present invention is not limited to this, and the support frame 4 and the support piece 9 may be made of a thermosetting synthetic resin. Further, the support frame 4 and the support piece 9 of the present embodiment are entirely formed of a single material synthetic resin. However, the present invention is not limited thereto, and glass fiber, carbon fiber, or the like may be used in places where strength is partially required. Alternatively, the reinforcing material may be filled. In this case, since the strength of the support frame 4 is improved, the portion of the structure of the frame 5 that supports and reinforces the support frame 4 itself can be simplified.
[0062]
Furthermore, in this embodiment, the support frame 4 and the support piece 9 are made of synthetic resin, but the present invention is not limited to this, and may be made of metal or wood. Also in this case, since the membrane member 3 can elastically support the thigh due to the presence of the support piece 9, it is possible to prevent the seated person's thigh from being strongly pressed against the lateral side 8 and improve sitting comfort. Can do.
[0063]
In this embodiment, the support frame 4 and the support piece 9 are integrally formed. However, the present invention is not limited to this, and these may be formed as separate members and then integrated by bonding or the like.
[0064]
In the embodiment described above, the seat 2 is attached to the fixed chair having the pipe frame 5, but the present invention is not limited to this. For example, the seat 2 is attached to the frame of various types of chairs such as office rotary chairs and other fixed chairs. be able to. In either case, the presence of the support piece 9 allows the membrane member 3 to elastically support the thigh, so that the sitting comfort can be improved.
[0065]
Furthermore, in the above-described embodiment, an example in which the structure of the present invention is applied to the seat 2 has been mainly described. However, the present invention is not particularly limited thereto, and can be applied to the backrest. An example of this embodiment is shown in FIGS. Like the seat 2 described above, the backrest 22 includes a film-like member 23 that forms a support surface 26 that supports the body of the seated person, and a frame-like support member (support frame) 24 that holds the periphery of the film-like member 23. Comprising. The backrest 22 is formed such that the upper side or the lower side 28, which is a part of the support frame 24 that intersects the seated person's body, is away from the support surface 26 and does not directly contact the body. The curved surface or bend of the membrane-like member 23 in which the shape is adjusted between the vertical side 27 that is the two holding sides facing each other across the horizontal side 28 in the vicinity of the horizontal side 28 and connects the horizontal side 28 and the support surface 26. A support piece 29 that supports a surface portion (referred to as a hanging portion in this embodiment) 30 between two vertical sides 27 is provided on the horizontal side 28. For this reason, since the film-like member 23 of the hanging part 30 is supported by a short span by the vertical sides 27 on both sides of the support frame 24 and the support pieces 29 between them, the back of the seated person or The waist can be elastically supported, the back and waist can be prevented from being pressed against the upper side or the lower side 28 of the support frame 24, and the shape of the hanging part 30 can be maintained. The backrest 22 is attached to the frame 5 by screwing or the like.
[0066]
The support piece 29 in this embodiment is formed at the center of the lateral side 28 at the upper end of the support frame 24 so as to have elasticity that can be appropriately elastically deformed without being too hard and not too soft when it hits the back. It is wide and formed to become thinner toward the tip. Therefore, since the back is elastically supported in a wide range and the force applied to the film-like member 23 of the drooping portion 30 is supported by the vertical sides 27 and the support pieces 29 on both sides of the support frame 24, the drooping portion 30 is crushed and back. Can be prevented from being pressed against the upper frame portion 8. Thereby, even if it uses backrest 22 lower than a head or a shoulder part, without using a backrest larger than a seated person's upper body, a feeling of drowning can be improved.
[0067]
Further, as shown by a two-dot chain line in FIG. 6, the film-like member 23 that supports the upper part of the back is gently deformed without forming a step near the tip of the support piece 29, so that the upper part of the back is not compressed. Can be supported. For this reason, drowning comfort can be improved.
[0068]
Furthermore, since the film-like member 23 of the hanging portion 30 is supported by the vertical sides 27 on both sides of the support frame 24 and the support pieces 29 therebetween, compared to the case where the film-like member 23 is supported only by the left and right support frames 24. The support interval can be reduced to half or less, and the shape of the hanging portion 30 can be maintained so that the body of the seated person does not directly hit the support frame 24, and the appearance is not impaired by sagging without tension.
[0069]
Moreover, it can maintain the shape of the drooping part of the backrest and support the back and waist without using another member such as urethane or rubber band, thus reducing the number of parts and keeping the product cost low. In addition, the number of assembly steps can be reduced.
[0070]
Furthermore, in the embodiment shown in FIGS. 11 and 12 described above, the drooping portion 30 is formed on the upper portion of the backrest 22. However, the present invention is not limited to this, and the drooping portion 30 is not formed as shown in FIG. The entire shape may be gently bent backward. Also in this case, the back and waist of the seated person can be elastically supported by the support piece 29 and the shape of the curved portion of the membrane member 23 can be maintained. Further, here, a support piece 29 that supports the curved surface portion of the film-like member 23 is formed at the center of the upper lateral side 28, and is formed in a shape that reaches the vicinity of the lower lateral side 28. In addition, the lower portion of the support piece 29 is formed to be narrow. Thereby, the support piece 29 can elastically support the seated person's back or waist in a wide range.
[0071]
Furthermore, in the embodiment shown in FIGS. 11 to 13 described above, the back of the seated person is directly supported by the support piece 29, but the present invention is not limited to this, and the support piece 29 is placed above the support frame 24 as shown in FIG. 14. Alternatively, the horizontal side 28 may be divided into left and right sides. The hardness of the support piece 29 here is set according to the size of the weight to be supported and the required elasticity. In this backrest, the back of the seated person is not directly supported by the support piece 29 but is supported by the membrane member 23 stretched between the support pieces 29 and 29. For this reason, since the film-like member 23 in the vicinity of the drooping portion 10 at the upper end of the backrest is supported with a short span by the vertical sides 27 on both sides of the support frame 24 and the left and right support pieces 29, 29 between them, The back can be supported without losing the tension and elasticity of the member 23. Thereby, it is possible to prevent the seated person's back from being pressed against the lateral side 28 and to improve the feeling of drowning, and to improve the appearance while maintaining the shape of the drooping portion 10 at the upper end of the drowning. In addition, since the support piece 29 is formed by being divided into left and right, there is little possibility that the seated person's spine directly hits the support piece 29, and the comfort of drowning is further improved.
[0072]
Further, in each of the embodiments of the backrest 22 described above, the support portion is a support piece 29 having a free end such as a tongue shape. However, the support portion 29 is not limited to this, and as shown in FIG. For example, a belt-like shape may be used to connect the horizontal sides 28 of each other. In this case, the back and waist can be firmly supported over the entire length of the backrest 22 and the shape of the curved or bent surface portion of the membrane member 23 can be maintained.
[0073]
By the way, in each embodiment mentioned above, although the support frames 4 and 24 which are frame-shaped support members are substantially rectangular shape, it is not restricted to this, It is good also as a triangular shape, a pentagon shape, or a circular frame-shaped support member. In these cases, a part of the side where the support portion is formed is set to an oblique side or an arc side where the seated person's body intersects. Also by this, the seated person's body is prevented from being pressed against a part of the side, and the shape of the curved surface or the bent surface of the membrane member can be maintained.
[0074]
Moreover, in each embodiment of the seat 2 and the backrest 22 described above, a part of the side where the support portion is formed is a side where the body of the seated person intersects, but this is not a limitation, and the body of the seated person does not necessarily intersect. For example, the vertical sides 7 and 27 may be used. In this case, the shape of the curved surface portion or the bent surface portion of the membrane member can be maintained. Moreover, even if the seated person's body may hit a part of the side, the cushioning property can be improved.
[0075]
Moreover, although the structure of the chair of the present invention has been described mainly with respect to the embodiment that constitutes the seat 2 or the backrest 22 alone, the structure is not particularly limited thereto, and this structure is used as a core material. Further, it goes without saying that it can also be used as a core material for a seat walnut or a back walnut that constitutes a seat or a backrest by covering only with urethane foam and an overlying fabric or an overlying fabric.
[0076]
【The invention's effect】
  As is clear from the above description, according to the structure of the chair such as the seat or the backrest according to claim 1, the frame-like support member is partially attached to the side.Since the supporting member is formed of a tongue piece that is elastically deformed, and the supporting member supports the membrane member, the supporting member that supports the body of the seated person is supported by the supporting member having a frame-like periphery. The surface is also elastically supported by the support part, and the weight of the seated person is shared between the membrane member and the support part.
  Moreover, since the tension | tensile_strength of a film-like member can be changed by changing the shape, thickness, position, etc. of a support part, the multiple types of structure from which tension | tensile_strength differs can be provided easily.
[0077]
    Further, according to the structure of the chair such as the seat or the backrest according to claim 2, the curved surface or the bent surface portion of the membrane member is supported by the holding side and the support portion on both sides with a short span. The body of the seated person can be supported at a position away from some sides without losing elasticity of the tension of the member. This prevents the seated person's body from being pressed against a part of the frame-like support member in the vicinity of the end of the support member, and can be gently supported only by the film-like member, thereby improving the sitting comfort. Can do.Furthermore, since the shape of the film-like member on the curved surface or the bent surface portion can be kept in the target shape, the appearance as a structure can be improved.
[0078]
In addition, since it is not necessary to use another member such as urethane or a rubber band, the product cost can be reduced by reducing the number of parts and the number of assembly steps, and design restrictions can be reduced.
[0080]
  And claims3According to the structure of the chair such as the seat or the backrest described above, the hanging portion near the side of the frame-shaped support member that intersects the seated person's body, that is, the curved surface or the bent surface portion of the membrane-shaped member is Since it is supported with a short span by the holding sides and the support portions on both sides, the body of the seated person can be supported at a position away from some sides without losing the elasticity of the tension of the membrane member. Accordingly, it is possible to prevent the seated person's body from being pressed against a part of the frame-shaped support member in the vicinity of the end of the support member. Furthermore, the shape of the film-like member in the vicinity of the drooping portion / end portion can be maintained in a desired shape.
[0081]
  Claims4According to the chair structure such as the seat or the backrest described above, the curved surface or the bent surface portion of the membrane member is supported at the same height as the holding side by the support portion. A feeling of falling can be prevented while maintaining. Therefore, the appearance as a structure can be improved and a good sitting comfort can be obtained.
[0082]
  And claims5According to the structure of the chair such as the seat or the backrest described above, when the hanging part and the film-like member in the vicinity thereof, which are the ends of the support surface, are dented due to the weight of the seated person, the support part bends to form a film By supporting the member, it gently deforms without forming a step on the membrane member around the support part, so that it can support the seated person without squeezing the body while giving a good cushion feeling, and the appearance also has a step difference There can be no beautiful things.
[0083]
  Claims6According to the structure of the chair such as the seat or the backrest described above, since the support portion is elastically deformed by the weight of the seated person, the support portion is bent by the weight when the seated person is seated, so that the membrane member is By supporting or directly supporting the weight, the support has a uniform cushioning property throughout the structure, and the body can be supported without being locally compressed.
[0084]
  And claims7According to the structure of the chair such as the seat or the backrest described above, it is possible to reinforce the base end portion of the support portion where stress tends to concentrate and prevent the support portion from being damaged. In addition, since the rib is not formed at the tip of the support part, the rigidity becomes smaller toward the tip of the support part, and the flexibility of the support part can be maintained.
[0085]
  Meanwhile, claims8According to the structure of the chair such as the seat or the backrest, since the frame-like support member and the support portion are formed at a time by injection molding or the like, it is easy to manufacture the chair structure such as the seat or the backrest. Can be.
[0086]
  Claims9According to the chair structure such as the seat or the backrest described above, the frame-shaped support member and the film-shaped member are formed at a time by injection molding or the like, so that the manufacture of the chair structure can be facilitated. .
[0087]
  And claims10According to the structure of the chair such as the seat or the backrest described above, since the support portion and a part of the side are shared, a chair structure with a novel design can be obtained.
[0088]
  On the other hand, the claim11According to the structure of the chair such as the seat or the backrest described above, the edge of the film-like member and the peripheral part of the frame-like support member are flush with each other, so that there is no unevenness at the edge of the film-like member. The surface of the object can be flattened and the sitting comfort can be improved.
[0089]
  And claims12According to the structure of the chair such as the seat or the backrest described above, the curved surface or the bent surface portion of the membrane member can be supported with a shorter span, so that the weight of the seated person can be more effectively dispersed. In addition, the shape of the curved surface or the bent surface of the membrane member can be maintained.
[0090]
  Meanwhile, claims13According to the structure of the chair described, the membrane member near the front hanging portion of the seat is supported with a short span by both sides of the support frame and the support portion between them, so that the tension of the membrane member near the front hanging portion is increased. The thigh can be elastically supported without losing. Accordingly, it is possible to improve the sitting comfort by preventing the thigh of the seated person from being pressed against the front frame portion. Moreover, since the support part is formed in the front hanging part from the center of the front side to the front end of the support surface, it is located between the thighs of the seated person so that the support part hits the thigh and is not compressed. Therefore, the sitting comfort can be further improved.
[0091]
  Claims14According to the described chair structure, the curved surface or the bent surface portion of the membrane member can be supported with a shorter span and the weight of the seated person can be directly supported by the support portion. Can be dispersed.
[0092]
  And claims15According to the structure of the chair described, the membrane-like member constituting the curved or bent surface portion of the upper or lower end of the backrest is supported by the holding sides on both sides of the frame-like support member and the left and right supports arranged therebetween. Therefore, the back can be elastically supported without losing the tension of the membrane member. This prevents the seated person's back, neck, and waist from being pressed against the side of the frame-like support member, thereby improving the comfort and maintaining the shape of the curved or bent surface at the upper or lower end of the backrest. Appearance can be improved. Moreover, since the support portions are formed on the left and right portions of the upper frame portion, the support portions are arranged on both sides avoiding the back of the seated person, and the seated person's spine does not hit the support part.
[0093]
  Claims16According to the structure of the chair described above, the drooping portion at the upper end or the lower end of the backrest is elastically supported and reinforced by the support portion. Can be maintained.
[Brief description of the drawings]
FIG. 1 is an exploded view showing an embodiment in which a chair structure such as a seat or a backrest of the present invention is applied to a seat.
FIG. 2 is a perspective view showing a support frame of a seat.
FIG. 3 is a central longitudinal cross-sectional side view of a seat showing a state cut along line III-III in FIG. 1;
FIG. 4 is a front view showing a support frame of the seat.
FIG. 5 is a side view showing a support piece.
FIG. 6 is a rear view showing the support piece.
FIG. 7 is a perspective view of a seat showing another embodiment of a support piece.
FIG. 8 is a perspective view of a seat showing still another embodiment of the support piece.
FIG. 9 is a perspective view showing another embodiment of a support frame.
10 is a cross-sectional view showing a state cut along line XX in FIG. 9;
FIG. 11 is an exploded view showing an embodiment in which a chair structure such as a seat or a backrest according to the present invention is applied to the backrest.
12 is a central longitudinal cross-sectional side view of a backrest showing a state cut along a line XII-XII in FIG. 11;
FIG. 13 is a perspective view showing a backrest support frame according to another embodiment.
FIG. 14 is a perspective view showing a backrest support frame according to still another embodiment.
FIG. 15 is a perspective view showing a backrest support frame according to another embodiment;
FIG. 16 is a perspective view showing a conventional seat.
17 is a side view of the central vertical cross section of the seat showing a state cut along line XVII-XVII in FIG. 16;
[Explanation of symbols]
1 chair
2 seats (chair structure)
3, 23 Membrane member
4, 24 Support frame (frame-shaped support member)
6 Support surface
7, 27 Vertical side (holding side)
8, 28 Horizontal side (some sides)
9, 29 Support piece (support part)
10, 30 Sagging part (curved surface or bent surface part of membrane member)
17 Ribs
20 Mounting part
21 Surroundings
22 Backrest (chair structure)

Claims (16)

In a chair structure such as a seat or a backrest, comprising a mesh-like member constituting a support surface that supports the body of a seated person, or a film-like member such as a film or fabric, and a frame-like support member that holds the periphery of the membrane-like member A structure of a chair such as a seat or a backrest, characterized in that a support portion comprising a tongue piece elastically deformed is provided on a part of the side of the frame-like support member , and the membrane-like member is supported by the support portion. object. The said support part supports the curved surface or bending surface part of the said film-like member by which the shape was arranged between two holding sides which pinch | interpose the said one side of the said frame-shaped support member. A chair structure such as a seat or backrest. The partial side is a side where the body of the seated person of the frame-shaped support member intersects, and is formed at a position away from the support surface and not in direct contact with the body. A chair structure such as a seat or a backrest according to claim 1 or 2. The membrane support surface for supporting the membrane member of the support portion and the portion forming the curved surface or the bent surface portion of the membrane member on the front side surface of the holding side are flush with each other. A structure of a chair such as a seat or a backrest described in 2 or 3. The chair structure such as a seat or a backrest according to any one of claims 1 to 4, wherein the support portion is formed so as to be gradually thinner toward a free end side. The chair structure according to any one of claims 1 to 5, wherein the support portion is thinner than the frame-shaped support member. The structure of a chair such as a seat or a backrest according to any one of claims 1 to 6, wherein a rib is provided on a back side of a base end portion of the support portion. The structure of a chair such as a seat or a backrest according to any one of claims 1 to 7, wherein the frame-shaped support member and the support portion are integrally formed of a synthetic resin. The structure of a chair such as a seat or a backrest according to any one of claims 1 to 8, wherein the film-like member is integrally formed when the frame-like support member is formed. The chair structure such as a seat or a backrest according to any one of claims 1 to 9, wherein the support portion is configured by deformation of the partial side itself. The front side surface of the structure has an attachment portion to which an edge portion of the film-like member is attached and a peripheral portion located around the attachment portion, and the attachment portion and the peripheral portion are flush with each other. The structure of a chair such as a seat or a backrest according to any one of claims 1 to 10. The structure of a chair such as a seat or a backrest according to any one of claims 1 to 11, wherein a plurality of the support portions are provided. The structure is a seat, the part of the side is a lateral side of the front end of the frame-shaped support member, the support part is formed at the center of the lateral side, and the film-like member is supported by a front hanging part. The structure of the chair according to any one of claims 1 to 11, wherein the chair is a structure. The structure is a seat, the part of the side is a lateral side of the front end of the frame-shaped supporting member, and a plurality of the supporting parts are formed on the lateral side, and the film-like member is supported by the front hanging part. The structure of the chair according to any one of claims 1 to 11, wherein the chair is a structure. The structure is a backrest, and the part of the side is either the upper side or the lower side of the frame-shaped support member or both sides, and the support part is separated from the center from side to side on the side. The chair structure according to any one of claims 1 to 11, wherein the chair structure is formed and supported by the support portion. The structure is a backrest, the part of the side is either the upper side or the lower side of the frame-like support member, or both sides, and the support part is formed at the center of the side, The structure of the chair according to any one of claims 1 to 11, wherein a membrane member is supported by the support portion.

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