JP2001137065A - Structure of chair such as seat or back rest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a user's body from being pressed by a hard frame member and the appearance from spoiled by eliminating setting in a curved face or a bent face in a drooped part or the like of the support face formed of a membrane member. SOLUTION: In a structure 2 of a chair 1 such as a seat or a back rest provided with a membrane member 3 such as a mesh, a film, or a fabric and a frame-shaped support member (support frame) 4 holding the periphery of a membraneous member 3, a tongue-shaped support 9 for instance that the curved face or a bent face of the membraneous member 3, namely the apron 10 connecting the lateral side 8 and the support face 6 whose shape is trimmed between the vertical sides 7 forming two holding sides opositely arranged while pinching the lateral side 8 as one side of the support member 4 are supported between the vertical sides 7, is provided at the lateral side 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair structure such as a seat or backrest comprising a membrane member such as a mesh, a film or a fabric, and a frame-like support member for holding a peripheral edge of the membrane member. . More specifically, the present invention relates to an improvement in a support structure of a membrane-like member at an upper end or a lower end of a backrest, for example, a front hanging portion of a seat on which the back of a thigh portion of a seated person contacts or an upper or lower back portion of a back. .

[0002]

2. Description of the Related Art In recent years, there has been proposed a chair having a seat 102 as shown in FIG. 16 comprising a film-like member 100 and a frame-like support member 101 for holding the periphery thereof. Membrane member 1
Reference numeral 00 denotes a support surface 103 that supports the occupant's body by exhibiting necessary elasticity as the seat 102 by being pulled from the periphery by the frame-shaped support member 101. In this type of seat 102, it is desirable to form a curved front hanging portion 104 at the front end of the seat 102 so that the thigh is not pressed by the front end of the seat 102 when seated.

[0003] There has also been proposed a chair having a backrest provided with a film-like member and a support frame for holding the periphery thereof. Also in this case, it is desirable to form a curved portion (hereinafter also referred to as a hanging portion) at the upper end or lower end of the backrest against which the back or the waist touches, so as not to press the body of the occupant.

[0004]

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, and the film-like member near the front hanging portion 104. Since the frame 100 is only supported by the left and right holding sides 101a of the frame-shaped support member 101, it loses its tension as it gets away from the holding sides 101a on both sides, and is easily loosened, making it difficult to maintain its shape. In particular, since the film-like member 100 in the central portion of the hanging portion 104 is not easily stretched and loosened compared to a portion that is strongly affected by the support of the holding sides 101a on both sides and has a loose shape, it is used as the hanging portion 104. Cannot be maintained, and is substantially linear as shown in FIG.

[0005] Therefore, the thigh of the seated person is on the side of the rigid frame-shaped support member 101 (at the position where it intersects the body of the seated person).
Since it is pressed against the surface 101b, the sitting comfort is deteriorated. In addition, even when the chair is not used, the film-like member 100 of the front hanging portion 104 tends to be loosened and depressed, and the appearance of the chair deteriorates.

In order to solve this problem, a seat 102 has been developed in which urethane is packed all over the back side of the front hanging portion 104 or a rubber band is applied to reinforce the membrane member 100. However, in this case, a reinforcing member must be separately prepared, which increases the number of parts and increases the number of assembly steps, which is not preferable. Further, if urethane or a rubber band is provided on the back of the film-like member 100 in order to maintain the shape of the hanging portion 104, the film-like member 100 and the frame-like support member 101 may be impaired in air permeability.
Thus, the advantage of configuring the seat 102 is partially lost.

Similarly, when a structure comprising a film-like member and a frame-like support member is adopted for the backrest, the hanging portion of the film-like member at the upper end of the backrest is crushed when leaning. Since the neck or the neck line hits the side of the upper end of the member, the leaning comfort is not good. In order to avoid this, the upper end of the frame-shaped support member, that is, the upper side portion may be a tall backrest that is located above the head of the occupant. Is also restricted.

Accordingly, the present invention provides a chair structure such as a seat or a backrest which can improve the sitting comfort and leaning comfort, maintain the shape of a curved surface or a curved surface portion and improve the appearance, and further increase the degree of freedom in design. The purpose is to provide.

[0009]

In order to achieve the above object, the invention according to the first aspect of the present invention relates to a film-like member such as a mesh or a film or a cloth constituting a support surface for supporting a occupant's body. In a chair structure such as a seat or a backrest provided with a frame-shaped support member for holding a peripheral edge, a part of a frame-shaped support member whose shape is adjusted between two holding sides sandwiching a part of the side of the frame-shaped support member A support part supporting a curved surface or a curved surface portion of the film-like member connecting the side and the support surface between the two holding sides is provided on some sides.

Therefore, the curved surface or the curved surface portion of the film-like member near a part of the side of the frame-like support member is supported by the holding sides and the support portions on both sides with a short span, so that the tension of the film-like member is reduced. The occupant's body can be supported without losing elasticity. Therefore, when the occupant places a weight on the structure, the weight is elastically supported by the curved surface or the curved surface portion of the membrane member, and in some cases, is directly supported by the support portion. This prevents the occupant's body from being pressed against some sides of the frame-shaped support member while being supported with good cushioning properties near the end of the support member, and the curved or bent surface of the film-shaped member. The shape of the part can be kept.

In addition, since the tension of the film-like 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. .

According to a second aspect of the present invention, in the chair structure such as the seat or the backrest according to the first aspect, a part of the side is located at a position where the body of the occupant of the frame-shaped support member intersects. And at a position away from the support surface and not in direct contact with the body.

Therefore, the curved or curved surface portion of the film-like member near a part of the frame-like support member at the position where the frame-like support member intersects the body of the occupant, the so-called hanging portion, has a shorter span due to the holding side and the support portion on both sides. Therefore, the occupant's body 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 body of the occupant from being pressed against a part of the side of the frame-shaped support member and to maintain the shape of the film-shaped member in the vicinity of the hanging portion / end of the frame-shaped support member.

According to a third aspect of the present invention, there is provided a chair structure such as a seat or a backrest according to the first or second aspect, wherein a table of a membrane supporting surface for supporting the membrane member of the supporting portion and a holding side is provided. The curved surface or the portion forming the curved surface portion of the film-like member on the side surface is flush with the portion. Therefore, since the curved surface or the curved surface portion of the film-shaped member is supported at the same height as the holding side by the support portion, it is possible to prevent the curved surface or the curved surface portion from falling while maintaining the cushioning property.

Further, the invention described in claim 4 is the invention according to claim 1.
In the chair structure such as the seat or the backrest described in any one of the above items 3 to 3, the support portion is a tongue piece and is formed to be gradually thinner toward the free end side. In this case, the support portion is elastically deformed by the weight of the occupant. For this reason, when, for example, the hanging portion and the film-shaped member in the vicinity thereof, which are the ends of the support surface, are depressed due to the weight of the seated person, the support is bent to support the film-shaped member, or the support directly supports the weight. Become like As a result, a good cushion feeling is given to the seated person, and the film-shaped member is gradually deformed without forming a step around the support portion,
The entire structure has a uniform cushioning property, so that the body can be supported without being locally compressed.

According to a fifth aspect of the present invention, in the chair structure such as the seat or the backrest according to any one of the first to fourth aspects, the support portion is thinner than the frame-shaped support member and is flexible. To have. Therefore, 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 to support the membrane member, or by directly supporting the weight by the support portion, The entire structure has a uniform cushioning property, so that the body can be supported without being locally compressed.

The invention described in claim 6 is the first invention.
In the chair structure such as the seat or the backrest described in any of the above items 1 to 5, a rib is provided on the back side of the base end of the support portion. Therefore, it is possible to reinforce the base end portion of the support portion where stress tends to concentrate, thereby preventing the support portion from being damaged. In addition, since no rib is formed at the tip of the support, the rigidity becomes smaller at the tip of the support, and the flexibility of the support can be maintained.

According to a seventh aspect of the present invention, there is provided a chair structure such as a seat or a backrest according to any one of the first to sixth aspects, wherein the frame-shaped support member and the support portion are integrally formed of synthetic resin. I am trying to be. 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 becomes easy.

According to an eighth aspect of the present invention, in the structure of a chair such as a seat or a backrest according to any one of the first to seventh aspects, the membrane member is integrally formed when the frame-shaped support member is formed. I am trying to. Therefore, since the frame-shaped support member and the film-shaped member are formed at a time by injection molding or the like, the manufacture of the chair structure is facilitated.

The invention according to claim 9 is the first invention.
In the chair structure such as the seat or the backrest according to any one of the above items 1 to 8, the support portion is formed of a part of a curved side. In this case, since the supporting part also serves as a part of the side, a chair structure having a new design can be obtained.

[0021] On the other hand, the invention according to claim 10 is based on claim 1.
9. In the structure of a chair such as a seat or a backrest according to any one of items 1 to 9, the front surface of the structure includes a mounting portion to which the edge of the membrane member is mounted and a peripheral portion located around the mounting portion. The mounting portion and the peripheral portion are flush with each other. Therefore, the edge of the film-like member and the periphery of the frame-like support member are flush with each other, so that no irregularities are generated at the edge of the film-like member. Can be.

Further, according to an eleventh aspect of the present invention, in the chair structure such as the seat or the backrest according to any one of the first to tenth aspects, a plurality of support portions are provided. In this case, since the curved surface or the curved surface portion of the membrane member can be supported with a shorter span, the weight of the occupant can be more effectively dispersed, and the curved surface or the curved surface portion of the membrane member can be supported. It can keep its shape.

The invention according to claim 12 is the first invention.
In the chair structure according to any one of the above items 1 to 10,
The structure is a seat, and some sides are lateral sides of the front end of the frame-shaped support member, and a support portion is formed at the center of the lateral side, so that the membrane member is supported by the front hanging portion.

Therefore, the film-like member in the vicinity of the hanging portion is
Since the supporting sides on both sides of the frame-shaped supporting member and the supporting portion between them are supported in a short span, the thigh can be supported without losing the elasticity of the tension of the film-shaped member. This prevents the thigh of the seated person from being pressed against the frame-shaped support member, and can maintain the shape of the front hanging portion.

Further, since the support portion is formed in the front hanging portion from the center of the front side of the frame-shaped support member to the front end of the support surface, the support portion is located between the thighs of the seated person. Therefore, the thigh of the seated person does not hit against the support portion and is not pressed.

The invention of claim 13 is the first invention.
In the chair structure according to any one of the above items 1 to 10,
The structure is a seat, some sides of which are lateral sides of the front end of the frame-shaped support member, and a plurality of support portions are formed on the lateral side, so that the film-shaped member is supported by the front hanging portion. Therefore, the curved surface or the curved surface portion of the membrane member can be supported with a shorter span and the weight of the occupant can be directly supported by the support portion, so that the weight can be more effectively dispersed.

According to a fourteenth aspect of the present invention, in the structure according to any one of the first to tenth aspects, the structure is a backrest, and a part of the side is provided at an upper end or a lower end of the frame-shaped support member. A support portion is formed on one or both of the horizontal sides and is separated from the center to the left and right, and
The curved portion or the curved surface portion of the film-like member formed from the lateral side to the support surface of the backrest is supported by the support portion.

Therefore, the film-like member constituting the curved surface or the curved surface portion at the upper end or the lower end of the backrest has a shorter span due to the holding sides on both sides of the frame-shaped support member and the left and right support portions disposed therebetween. Therefore, the back can be elastically supported without losing the tension of the membrane member.
This prevents the back, neck, and waist of the seated person from being pressed against the lateral sides of the frame-shaped support member, and can maintain the shape of the curved surface or the curved surface of the upper end or lower end of the backrest.

Moreover, since the support portions are formed so as to be divided into right and left except for the central portion of the horizontal side, they are located on both sides except for the back of the seated person. Therefore, the backbone of the seated person rarely hits the support portion.

According to a fifteenth aspect of the present invention, in the structure according to any one of the first to tenth aspects, the structure is a backrest, and some of the sides are formed at the upper end or the lower end of the frame-shaped support member. A support portion is formed at one or both of the horizontal sides and a center of the horizontal side, and a curved surface or a curved surface portion (a so-called hanging portion) of a film-shaped member formed from the lateral side to the support surface of the backrest is formed. It is supported by the support section.

Therefore, the curved or curved surface portion at the upper end or the lower end of the backrest is elastically supported by the support portion and reinforced, so that the back and the waist can be firmly supported and the shape of the curved surface or the curved surface portion can be maintained. .

According to a sixteenth aspect of the present invention, in the chair structure of the fifteenth aspect, the support portion connects the upper and lower horizontal sides of the frame-shaped support member. In this case, since the supporting portions formed at the upper and lower lateral ends of the backrest are connected to each other, the back and the waist are firmly supported over the entire vertical direction of the backrest, and the curved or bent surface of the membrane member is provided. The shape of the surface part is maintained.

[0033]

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.

FIGS. 1 to 4 show an embodiment in which the chair structure of the present invention is applied to a seat. This structure includes a film-like member 3 such as a mesh, a film, or a fabric, which constitutes a support surface 6 that supports the body of a seated person, and a frame-like support member (hereinafter, referred to as a support frame) that holds the periphery of the film-like member 3. Call)
4 is a seat 2 comprising: The seat 2 is a film that connects the supporting surface 6 with the lateral side 8 whose shape is adjusted between two holding sides, that is, the vertical side 7 that sandwiches the lateral side 8 that is a part of the side of the supporting frame 4. A support portion (hereinafter, referred to as a support piece) 9 for supporting a curved surface or a curved surface portion 10 of the shaped member 3 between two vertical sides 7 is provided on the horizontal side 8. For this reason, the curved or bent surface portion 10 of the film-like member 3 near the horizontal side 8 of the support frame 4 is supported by the vertical sides 7 on both sides of the support frame 4 and the support pieces 9 therebetween with a short span. Therefore, it is possible to elastically support the body of the occupant without losing the tension of the membrane member 3.
Then, when the occupant puts weight on the seat 2, the weight is elastically supported by the curved surface or the curved surface portion 10 of the membrane member 3, and may be directly supported by the support piece 9 in some cases. Become. Thereby, the body of the occupant is prevented from being pressed against the lateral sides 8 of the support frame 4 to improve the sitting comfort, and the shape of the curved surface or the curved surface portion 10 of the membrane member 3 can be maintained. .

In this embodiment, the front side 8 is the support frame 4
Is formed at a position where the body of the seated person 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 curved surface portion of the film-shaped member 3 forms the front hanging portion 10.

In this embodiment, the "partial side" of the support frame 4 mainly means a side formed at a position where the body of the occupant intersects and is separated from the support surface 6 and does not directly contact the body. However, the present invention is not limited to this. For example, the side forming the curved surface or the curved surface portion of the membrane member together with the vertical side 27 which is the holding side while being in contact with the body, such as the upper horizontal side 28 shown in FIG. Is included. Some of the sides are horizontal sides 8, 28 of rectangular supporting frames 4, 24 as shown in FIGS. 1 to 15, or triangular, pentagonal, or circular supporting frames (not shown). )), So that it is the oblique side or arc side where the body of the occupant intersects. On the other hand, the “holding side” of the support frame 4 is a pair of “partial sides” that are continuous with both ends of the “partial side” and support the partial side to form a curved surface or a curved surface portion of the film-like member together with the support portion. Means side.

The seat 2 of this embodiment is applied to a fixed chair that can be stacked, and is directly assembled to the frame 5 of the chair 1.

Here, the support piece 9 is provided at the center of the front side 8 of the support frame 4. This support piece 9 is
With the same curved shape as that of the vertical side 7 rising from both ends, the front and back sides extending toward the support surface 6 formed apart from the horizontal side 8 are formed in a smooth tongue shape.
Is provided so as to support the curved surface / front hanging portion 10. Here, as shown in FIGS. 2 and 4, the film supporting surface 9 a of the support piece 9 supporting the film member 3 and the portion 7 a of the front side of the vertical side 7 forming the front hanging portion 10 of the film member 3 are as follows. I try to be flush. That is, the support piece 9 extends upward from the center of the horizontal side 8 and bends the upper part backward, 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 of 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 of the support surface 6 can be kept horizontal to improve the appearance and feel 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 behind the support piece 9 is the support surface 6.
The length is such that the crotch of the occupant does not hit the support piece 9. Accordingly, it is possible to prevent a decrease in sitting comfort due to the crotch of the seated person hitting the support pieces 9.

The support piece 9 is formed to be gradually thinner toward the free end, and more preferably, to be gradually thinner toward both ends in the width direction. In this case, FIG.
As shown by a two-dot chain line in FIG. 2, the elastic member is easily deformed toward the tip and becomes resilient, so that when the film member 3 is deformed, it is not bent so as to cause a step with the film member 3. . Therefore, the membrane-like member 3 near the front hanging portion 10 that supports the thigh when sitting is deformed gently without forming a step around the support piece 9, so that the thigh can be supported without being pressed. Therefore, the thigh is elastically supported by the membrane member 3 and the supporting piece 9 in the vicinity of the front hanging portion 10 and does not hit the side 8.

In the present embodiment, the shape of the support piece 9 as 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, by appropriately setting the width, shape, thickness, and material of the support piece 9, the elasticity of the support piece 9 can be adjusted. For this reason, the support piece 9 can be formed so as to obtain optimal elasticity as the film-shaped member 3 near the front hanging portion 10.

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. Then, the support frame 4 and the support piece 9
Is an integrally molded product integrated with the periphery of the film-like member 3 by injection molding or the like. For this reason, since the manufacture of the seat 2 becomes easy, mass production can be easily performed and the cost can be reduced.

As the film-like member 3, it is preferable to use a mesh cloth (for example, Dymetrol manufactured by DuPont). In the present embodiment, the film-like member 3 is made of a mesh cloth. However, the present invention is not limited to this. Other materials such as a wire mesh may be used.

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.
For this reason, when the thigh of the seated person pushes down the membrane member 3 near the hanging portion 10, the support piece 9 is pressed from above, so that even if the membrane member 3 and the support piece 9 are separated from each other, the membrane is removed. The shaped member 3 is supported by a support piece 9. Here, when attaching the seat 2 to the frame 5, the support frame 4 and the membrane member 3
It is preferable to provide a cover member that covers an integrated part with the cover member. In this case, since the integrated portion can be covered and hidden by the cover member, the appearance can be further improved.

The seat 2 is used as it is as the seat of the chair 1. However, in some cases, even if a skin member is attached so as to cover the entire upper surface and the outer surface of the membrane member 3 and the support frame 4. good. 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 made any color or pattern by selecting the skin member. It is also possible to pack a thin urethane foam between the skin member and the membrane member 3.

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 supporting portion 13 that inserts and supports the backrest 12 from above. The shapes of the legs and other parts of the frame 5 are not particularly limited. For example, as shown in FIG. 1, so-called circle legs formed by bending right and left pipes one by one into a rectangular shape may be used. It is also possible to use a so-called four-legged structure composed of separate vertical pipes. 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. Also,
In the present embodiment, the chair 1 having the backrest 12 is used. However, the present invention is not limited to this, and the chair 1 without the backrest 12 may be used.

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, as shown in FIG. It may be screwed while being fitted and positioned on the support frame 11, or a locking claw integrally formed or attached to the support frame 4 may be hooked onto the support frame 4 with one touch. 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 shifting with respect to the frame 5 even when the film-shaped member 3 is pulled by the weight of the occupant.

On the other hand, the backrest 12 includes a mesh-like film member 14 for supporting the back, an edge cloth 15 sewn on the periphery of the film-like member 14, and left and right edge cloths 15 of the film-like member 14. And a cloth fixed bag 16 whose upper part is sewn. 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 a 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.

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 projection for holding the film-like member 3 formed inside the injection-molding mold, and is installed on the mold. Alternatively, the film-like member 3 is held outside the mold. At this time, the film member 3 is given a pretension required as the seat 2.

Then, the support frame 4 is injection-molded while the film-shaped member 3 is housed in the cavity of the mold.
The support frame 4 is formed in a state where the support frame 4 is integrated. This makes it possible to easily obtain the seat 2 as an integrally molded product in which the support frame 4 and the support pieces 9 are firmly integrated with the membrane member 3. The method for forming the support frame 4 integrally with the film-shaped member 3 is not limited to the injection molding method, but may be another method such as a compression molding method or a casting method.

In the chair 1 to which the seat 2 is assembled, the thighs of the occupant are elastically supported by the left and right vertical sides 7 of the support frame 4 and the support members 9 arranged between the thighs, and are stretched by the film-like member 3. Supported. For this reason, it is possible to prevent the thigh from being pressed against the lateral side 8 and improve the sitting comfort. In addition, since the support piece 9 is formed at the front hanging 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 pressed. Nothing to do.

Furthermore, the supporting interval can be reduced to half or less as compared with the case where the film-like member 3 is supported only by the left and right vertical sides 7 of the support frame 4 in the vicinity of the hanging portion 10, so that the shape of the hanging portion 10 is reduced. Can be kept. For this reason, the hanging portion 1
The appearance is not impaired by the sag of the central part of 0.

Moreover, since the seating comfort and appearance can be improved without using a separate member such as urethane or rubber band, the product cost can be reduced without increasing the number of parts.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited thereto, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the thickness of the support piece 9 is gradually reduced toward the front end. However, the thickness is not particularly limited to this, and the entire support piece 9 may have a uniform thickness. In this case, it is preferable that the support piece 9 be thinner than the support frame 4 so as to have flexibility as shown in FIG. Also in this case, the film-like member 3 is provided on the left and right vertical sides 7 of the support frame 4.
And the supporting piece 9 can elastically support the thigh. Here, when the support piece 9 is made thinner and uniform than the support frame 4 as described above, the rib 17 is provided on the back side of the base end portion of the support piece 9 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 easily concentrated, thereby preventing the support member 9 from being damaged. In addition, since the rib 17 is not formed at the tip of the support piece 9, the rigidity of the support piece 9 becomes lower at the tip of the support piece 9 and the flexibility of the support piece 9 can be maintained. In addition, the rib 17 may be formed on the back side of the base end of the support piece 9 in which the distal end side shown in FIGS.

Further, in the above 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 hanging portion 10 of the membrane member 3 can be supported with a shorter span, and the weight of the occupant can be directly supported by 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.

Further, in the above-described embodiment, the support portion is constituted by the tongue-shaped support piece 9, but the present invention is not limited to this, and the support portion 9 may be U-shaped along the support surface 6 as shown in FIG. For example, the front side 8 may be formed into a curved shape. In this case, since the supporting part 9 and the side 8 are also used, it is possible to obtain the chair seat 2 having a new design.

In the above embodiment, the film-like member 3
Is attached to the entire upper surface of the support frame 4, but is not limited to this, and the film-shaped member 3 may be attached to a part of the upper surface of the support frame 4. In this case, for example, as in the seat 2 shown in FIGS. 7 to 10, the attaching portion 20 to which the edge 19 of the membrane member 3 is attached, and the membrane member 3 attached around the attaching portion 20 are attached. The mounting portion 20 and the peripheral portion 21 are flush with each other. According to this, since the edge of the film-like member 3 does not have unevenness on the seating surface 6 of the seat 2, the seating surface 6 can be flattened and the sitting comfort can be improved. In addition, 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. .

In this case, it is preferable that the mounting portion 20 formed on the front side 8 is wider than the mounting portion 20 formed on the other side 7. According to this, the front side 8
Since the fixing force between the film member 3 and the film member 3 increases, it is possible to prevent the film member 3 in the vicinity of the lateral side 8 where the load is most likely to be applied from peeling off.

Further, in this embodiment, the film-like member 3 is integrally formed as if it were adhered to the upper surfaces of the support frame 4 and the support piece 9, but the invention is not limited to this. It may be integrally molded so as to be embedded in the inside. Further, the place where the film-shaped 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 integral part of the membrane member 3 with the support frame 4 can be hidden from the occupant side, so that the appearance can be improved.

Further, the film member 3, the support frame 4, and the support piece 9
The method for integrating the support frame 4 and the film-shaped member 3 is not limited to the integral molding by injection molding as described above, and various methods for integrating the support frame 4 and the film-like member 3 can be applied. For example, the film member 3 and the support frame 4 are separately formed, and the periphery of the film member 3 is integrated on the surface of the support frame 4 by bonding with an adhesive, screwing with a bolt or the like, or stapling. You may do it. Alternatively, a support frame 4 having a projection on the surface is formed, and the film-like member 3 is formed on the projection.
May be hooked and integrated. 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. To do. Further, 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. When the support frame 4 is formed in half, a convex portion and a concave portion that fit each other are formed on each of the sandwiching surfaces of the support frame 4 facing each other, and a gap is formed between the convex portion and the concave portion. The film-like member 3 may be sandwiched. According to this, the holding force of the film-shaped member 3 can be further increased.

Further, a groove or a nail for assembling to the chair frame 5 is provided in the support frame 4, and the support frame 4 is assembled to the frame 5 with the film-like member 3 sandwiched in the groove or the nail. May be. At this time, for example, the peripheral edge 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 peripheral edge of the film-like member 3 is put into the groove of the support frame 4 in advance. The support frame 4 may be fitted to the frame 5 in the placed state.
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 bonding or the like so that the weight of the thigh is supported by the support piece 9 via the membrane member 3. To Further, in this case, the support frame 4 and the frame 5 may be fixed by a fastening force of fitting, or the support frame 4 and the frame 5 may be fixed by screws 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-shaped member 3 can be further increased by penetrating the screw for bolting through the film-shaped 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-shaped member 3 can be sandwiched between the convex portion and the concave portion. The holding force of the shaped member 3 can be further increased.

In this embodiment, the support frame 4 and the support pieces 9 are made of a thermoplastic synthetic resin. However, the present invention is not limited to this, and they may be made of a thermosetting synthetic resin. In addition, the support frame 4 and the support piece 9 of the present embodiment are entirely formed of a single synthetic resin, but are not limited thereto, and may be formed of glass fiber, carbon fiber, etc. May be filled.
In this case, the strength of the support frame 4 is improved.
In the configuration described above, the portion for supporting and reinforcing the support frame 4 itself can be simplified.

Further, in the present embodiment, the support frame 4 and the support piece 9 are made of synthetic resin, but are not limited to this, and may be made of metal or wood. Also in this case, since the film-like member 3 can elastically support the thigh due to the presence of the support piece 9, it is possible to prevent the thigh of the occupant from being strongly pressed against the lateral side 8 and improve sitting comfort. Can be.

In this embodiment, the support frame 4 and the support piece 9
Are integrally formed, but the present invention is not limited to this, and they may be formed as separate members and then integrated by bonding or the like.

In the above-described embodiment, the seat 2 is mounted on the fixed chair having the pipe frame 5. However, the present invention is not limited to this. For example, various kinds of chairs such as office swivel chairs and other fixed chairs can be used. Can be attached to the frame. In any 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.

Furthermore, in the above-described embodiment, an example in which the structure of the present invention is applied to the seat 2 is mainly described. However, the present invention is not particularly limited to this and can be applied to a backrest. An example of this embodiment is shown in FIGS.
The backrest 22 includes a film-like member 23 that forms a support surface 26 that supports the body of the occupant and a frame-like support member (support frame) 24 that holds the peripheral edge of the film-like member 23, similarly to the above-described seat 2. It comprises. The backrest 22 forms the upper side or lower side 28 which is a part of the support frame 24 at the position where the backrest 22 intersects the occupant's body at a position away from the support surface 26 and not in direct contact with the body. , A vertical side 27 which is two holding sides opposed to each other across the horizontal side 28 in the vicinity of the horizontal side 28.
A support piece having a curved shape or a curved surface portion (referred to as a hanging portion in the present embodiment) 30 of the film-like member 23 connecting the lateral side 28 and the support surface 26 between the two vertical sides 27. 29 is provided on the side 28. For this reason, the film-like member 23 of the hanging portion 30 is
7 and the supporting piece 29 between them, it is possible to elastically support the back or waist of the seated person without losing tension, and the back and waist are supported by the support frame 2.
4 can be prevented from being pressed against the lateral side 28 at the upper end or the lower end, and the shape of the hanging portion 30 can be maintained. The backrest 22 is attached to the frame 5 by screws or the like.

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, and has such elasticity that it is not too hard and not too soft when it hits the back and can be appropriately elastically deformed. It is formed so as to be wider and thinner toward the tip. Therefore,
The back is elastically supported in a wide range, and the force applied to the membrane member 23 of the hanging portion 30 is applied to the vertical sides 27
And the supporting piece 29, it is possible to prevent the hanging portion 30 from being crushed and the back from hitting the upper frame portion 8 to be pressed. Thereby, even if the backrest 22 lower than the head or the shoulder is used without using the backrest larger than the upper body of the seated person, the comfort of the backrest can be improved.

Further, as shown by the two-dot chain line in FIG. 6, the film-like member 23 supporting the upper part of the back deforms gently without forming a step near the tip of the support piece 29. Can be supported without pressure. For this reason, the leaning comfort can be improved.

Further, 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, 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 of that of the above, and the shape of the hanging portion 30 can be maintained so that the body of the occupant does not directly hit the support frame 24, or the appearance can be impaired by eliminating the tension and squatting. Absent.

Further, since the shape of the hanging portion of the backrest can be maintained and the back and the waist can be supported without using a separate member such as urethane or a rubber band, the number of parts is reduced and the product cost is reduced. In addition, the number of assembly steps can be reduced.

Further, in the embodiment shown in FIGS. 11 and 12 described above, the hanging portion 30 is formed on the upper portion of the backrest 22. However, the present invention is not limited to this, and the hanging portion 30 may be formed as shown in FIG. Instead, for example, the whole may be formed into a shape that is slightly curved backward. In this case as well, the back and the waist of the seated person can be elastically supported by the support pieces 29, and the shape of the curved surface of the film-like member 23 can be maintained. Also,
Here, a support piece 29 for supporting the curved portion of the film-like member 23 is formed at the center of the upper side 28, and is formed so as to reach near the lower side 28. Moreover,
The lower part of the support piece 29 is formed to be narrow. Thereby, the support piece 29 can elastically support the back or waist of the seated person in a wide range.

Further, in the embodiment shown in FIGS. 11 to 13 described above, the back of the occupant is directly supported by the support piece 29. However, the present invention is not limited to this, and as shown in FIG. It may be formed so as to be distributed on the left and right sides of the horizontal side 28 above the top 24. Here, the hardness of the support piece 29 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 pieces 29, but is supported by the film-like member 23 stretched between the support pieces 29.
For this reason, the film-like member 23 near the hanging portion 10 at the upper end of the backrest
Is supported in 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, so that the back is supported without losing the tension and elasticity of the film-like member 23. be able to. As a result, the back of the seated person is
8 can be prevented from being pressed and the leaning comfort can be improved, and the shape of the hanging portion 10 at the upper end of the lean can be maintained to improve the appearance. In addition, since the support pieces 29 are formed by being distributed to the left and right, there is little possibility that the backbone of the occupant directly hits the support pieces 29, and the leaning comfort is further improved.

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 present invention is not limited to this, and as shown in FIG. For example, the upper and lower lateral sides 28 may be connected to each other to form a band. In this case, the back and the waist are firmly supported over the entire length of the backrest 22 and the shape of the curved surface or the curved surface portion of the film-like member 23 can be maintained.

In each of the above-described embodiments, the support frames 4 and 24, which are frame-shaped support members, are substantially rectangular. However, the present invention is not limited to this, and triangular, pentagonal, or circular frame-shaped support members may be used. Is also good. In these cases, a part of the side where the support portion is formed is an oblique side or an arc side where the body of the seated person intersects. This also prevents the body of the occupant from being pressed against some sides and can maintain the shape of the curved surface or the curved surface portion of the membrane member.

In each of the embodiments 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. However, the present invention is not limited to this. May not necessarily intersect, for example, the vertical sides 7 and 27. In this case, the shape of the curved surface or the curved surface portion of the film-like member can be maintained. Moreover, even if the body of the occupant hits some sides, the cushioning property can be improved.

Although the chair structure of the present invention has been described mainly with respect to the embodiment in which the seat 2 or the backrest 22 is constituted by itself, the present invention is not particularly limited to this. Needless to say, it can be used as a core material of a seat or a back cover which constitutes a seat or a backrest by covering urethane foam and a top covering or a top covering only from above as a core material.

[0076]

As is apparent from the above description, according to the structure of the chair such as the seat or the backrest according to the first aspect,
Since the curved surface or the curved surface portion of the membrane member is supported by the holding sides and the support portions on both sides with a short span, the body of the occupant can be separated from some sides without losing the elasticity of the tension of the membrane member. Can be supported at different positions. As a result, it is possible to prevent the body of the occupant from being pressed against a part of the frame-shaped support member near the end of the support member and to gently support only the membrane-shaped member, thereby improving the sitting comfort. Can be.

Further, since the shape of the film-shaped member on the curved surface or the curved surface portion can be maintained at the desired shape, the appearance as a structure can be improved.

Further, since it is not necessary to use a separate member such as urethane or rubber band, product cost can be reduced by reducing the number of parts and the number of assembling steps.
Design constraints can be reduced.

Further, since the tension of the membrane member can be changed by changing the shape, thickness, position, etc. of the support portion, a plurality of types of structures having different tensions can be easily provided. .

According to the structure of the chair such as the seat or the backrest according to the second aspect, the hanging portion, ie, the film-like portion, near a part of the frame-shaped support member at the position where the frame-shaped support member intersects the occupant's body. Since the curved surface or the curved surface portion of the member is supported by the holding sides and the support portions on both sides with a short span, the body of the seated person is separated from some sides without losing the elasticity of the tension of the membrane member Can be supported. Accordingly, it is possible to prevent the occupant's body from being pressed against a part of the frame-shaped support member near the end of the support member. Further, the shape of the film-like member in the vicinity of the hanging portion / end portion can be maintained at the desired shape.

Further, according to the chair structure such as the seat or the backrest according to the third aspect, the curved surface or the curved surface portion of the membrane member is supported by the supporting portion at the same height as the holding side. Alternatively, a feeling of falling can be prevented while maintaining the cushioning property of the bent surface portion. Therefore, the appearance as a structure can be improved, and good sitting comfort can be obtained.

Further, according to the structure of the chair such as the seat or the backrest according to the fourth aspect, when the weight of the seated person causes the end of the support surface, for example, the hanging portion and the membrane member in the vicinity thereof to be dented. By supporting the membrane member by bending the support portion,
Since the membrane member is gently deformed around the supporting portion without forming a step, the seated person can be provided with a good cushion feeling, can be supported without pressing the body, and can have a beautiful appearance with no step.

Further, according to the structure of the chair such as the seat or the backrest according to the fifth aspect, since the supporting portion is elastically deformed by the weight of the seated person, the supporting portion is supported by the weight when the seated person is seated. By bending the part to support the membrane member, or by directly supporting the weight by the support part, the structure has a uniform cushioning property so that the body can be supported without compressing the body locally Become.

According to the chair structure such as the seat or the backrest according to the sixth aspect, the base end of the support portion where stress tends to concentrate can be reinforced to prevent the support portion from being damaged. In addition, since no rib is formed at the tip of the support, the rigidity becomes smaller at the tip of the support, and the flexibility of the support can be maintained.

On the other hand, according to the structure of the chair such as the seat or the backrest according to the seventh aspect, the frame-shaped support member and the support portion are formed at a time by injection molding or the like. Manufacture of the chair structure can be facilitated.

According to the chair structure such as the seat or the backrest according to the eighth aspect, the frame-shaped support member and the film-shaped member are formed at once by injection molding or the like. Manufacturing can be facilitated.

According to the structure of the chair such as the seat or the backrest according to the ninth aspect, since the supporting portion also serves as a part of the side, a chair structure of a new design can be obtained. it can.

On the other hand, according to the structure of the chair such as the seat or the backrest according to the tenth aspect, the edge of the film-shaped member and the peripheral portion of the frame-shaped support member are flush with each other. As a result, the surface of the structure can be flattened and the sitting comfort can be improved.

Further, according to the chair structure such as the seat or the backrest according to the eleventh aspect, since the curved surface or the curved surface portion of the membrane member can be supported with a shorter span, the weight of the seated person can be reduced. Dispersion can be performed more effectively, and the shape of the curved surface or the curved surface portion of the film-shaped member can be maintained.

On the other hand, according to the structure of the chair according to the twelfth aspect, the film-like member near the front hanging portion of the seat is supported by both sides of the support frame and the supporting portion therebetween with a short span. The thigh can be elastically supported without losing the tension of the membrane member near the part. Thereby, it is possible to prevent the thigh of the seated person from being pressed against the front frame portion, thereby improving the sitting comfort. In addition, since the support portion is formed in the front hanging portion from the center of the front horizontal side to the front end of the support surface, it is located between the thighs of the seated person and the support portion does not hit the thigh and press against it. Therefore, the sitting comfort can be further improved.

According to the chair structure of the thirteenth aspect, the curved surface or the curved surface of the membrane member can be supported with a shorter span, and the weight of the occupant can be directly supported by the support portion. So that the weight can be more effectively dispersed.

According to the structure of the chair according to the fourteenth aspect, the film-like member constituting the curved surface or the curved surface portion of the upper end or the lower end of the backrest is formed by the holding sides on both sides of the frame-shaped support member and the holding sides thereof. Since it is supported in a short span by the left and right support portions disposed therebetween, the back can be elastically supported without losing the tension of the membrane member. This prevents the back, neck, and waist of the occupant from being pressed against the lateral sides of the frame-shaped support member to improve the comfort of the backrest and to maintain the shape of the curved or curved surface at the upper end or lower end of the backrest. The appearance can be improved. In addition, 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 except for the back of the seated person, so that the backbone of the seated person does not hit the support portion.

According to the chair structure of the fifteenth aspect, the hanging portion at the upper end or the lower end of the backrest is elastically supported by the support portion and reinforced, so that the backrest and the waist can be firmly supported. It is comfortable and can maintain the shape of the sag.

According to the chair structure of the present invention, since the support portions formed on the upper and lower lateral sides of the backrest are connected to each other, the entire back in the vertical direction of the backrest. The back and the waist are firmly supported, and the shape of the curved surface or the curved surface portion of the membrane member 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 the seat.

FIG. 3 is a central longitudinal sectional side view of a seat showing a state cut along a 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 the support frame.

FIG. 10 is a cross-sectional view showing a state cut along the line XX of FIG. 9;

FIG. 11 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 backrest.

12 is a side view of the backrest taken along the line XII-XII in FIG.

FIG. 13 is a perspective view showing a support frame of a backrest according to another embodiment.

FIG. 14 is a perspective view showing a support frame of a backrest according to still another embodiment.

FIG. 15 is a perspective view showing a support frame of a backrest according to another embodiment.

FIG. 16 is a perspective view showing a conventional seat.

FIG. 17 is a central longitudinal cross-sectional side view of the seat showing a state cut along line XVII-XVII in FIG. 16;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Chair 2 Seat (chair structure) 3, 23 Membrane member 4, 24 Support frame (frame-like support member) 6 Support surface 7, 27 Vertical side (holding side) 8, 28 Horizontal side (partial side) 9, 29 Supporting piece (supporting part) 10, 30 Hanging part (curved surface or curved surface part of membrane member) 17 Rib 20 Mounting part 21 Peripheral part 22 Backrest (chair structure)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuyuki Ito 5331 Nishiharu Kinoshita Kawara, Ina-shi, Nagano Takano Co., Ltd. Furniture Development Dept. (72) Inventor Yojiro Kinoshita 6-1-1 Oimazato-minami, Higashi-Nari-ku, Osaka-shi, Osaka No. KOKUYO Co., Ltd. (72) Inventor Satoshi Sumiya 6-1, 1-1 Oimazato Minami, Higashinari-ku, Osaka-shi, Osaka Prefecture No. 72 Inventor Nobuyuki Ueda 6-1-1 Oimazato-minami, Higashinari-ku, Osaka-shi, Osaka No. 1 Inside KOKUYO Corporation

Claims (16)

[Claims] 1. A seat or backrest provided with a film-like member such as a mesh, a film, or a cloth constituting a support surface for supporting a body of a seated person and a frame-like support member for holding a peripheral edge of the film-like member. In the chair structure, the curved surface or the curved surface of the film-like member that connects the part-side and the support surface, the shapes of which are arranged between two holding sides that sandwich the part-side of the frame-like support member. A chair structure such as a seat or a backrest, wherein a support portion for supporting a surface portion between the two holding sides is provided on the partial side. 2. The part of the side is a side at a position where the body of a 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. 3. A film supporting surface of the supporting portion for supporting the film-like member, and a portion of the film-like member on the front surface of the holding side where the curved surface or the curved surface portion is formed is flush. A chair structure such as a seat or a backrest according to claim 1 or 2. 4. The seat or backrest according to claim 1, wherein said support portion is a tongue piece and is formed gradually thinner toward a free end side. Chair structure. 5. A chair structure such as a seat or a backrest according to claim 1, wherein said support portion is thinner than said frame-shaped support member and has flexibility. 6. A chair structure such as a seat or a backrest according to claim 1, wherein a rib is provided on a back side of a base end portion of said support portion. 7. The chair structure such as a seat or a backrest according to claim 1, wherein said frame-shaped support member and said support portion are integrally formed of synthetic resin. . 8. The structure of a chair such as a seat or a backrest according to claim 1, wherein said film-like member is formed integrally when said frame-like support member is formed. 9. The structure of a chair such as a seat or a backrest according to claim 1, wherein said support portion is formed by said part of said curved side. 10. The front surface of the structure has a mounting portion to which an edge of the film-like member is mounted and a peripheral portion located around the mounting portion, and the mounting portion and the peripheral portion are in a plane. A chair structure such as a seat or a backrest according to any one of claims 1 to 9, wherein the chair structure comprises: 11. A chair structure such as a seat or a backrest according to claim 1, wherein a plurality of said support portions are provided. 12. The structure is a seat, and the part of the side is a lateral side of a front end of the frame-shaped support member, and the support portion is formed at a center of the lateral side. The chair structure according to any one of claims 1 to 10, wherein the chair structure supports the member. 13. The structure is a seat, and the part of the side is a lateral side of a front end of the frame-shaped support member, and a plurality of the support parts are formed on the lateral side. The chair structure according to any one of claims 1 to 10, wherein the chair structure supports the member. 14. The structure is a backrest, and the part of the side is one or both lateral sides of an upper end or a lower end of the frame-shaped support member, and the supporting part is centered on the lateral side. The curved surface or the curved surface portion of the film-shaped member formed from the lateral side to the support surface of the backrest, and is supported by the support portion. The chair structure according to any one of the above. 15. The structure is a backrest, and the part of the side is one or both sides of an upper end or a lower end of the frame-shaped support member, and the support portion is provided at the center of the side. And a curved surface or a curved surface portion of the film-shaped member formed from the lateral side to a support surface of the backrest is supported by the support portion.
11. The chair structure according to any one of items 1 to 10. 16. The chair structure according to claim 15, wherein the support portion connects the upper and lower sides of the frame-shaped support member.