JP3819199B2 - seat - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat formed by covering a seat body with a detachable upholstery.
[0002]
[Prior art]
This type of seat is designed so that only the upholstery can be detached from the seat main body, the upholstery can be cleaned and replaced, and it is suitable for dealing with soiling and breakage of the upholstery or separating and disposing of the main body of the seat. Is. In order to be able to detach and attach the upholstery fabric, if a metal fitting or resin part such as a fastener or a resin molded product is sewn into the upholstery fabric, other clothing may be damaged by the fastener during cleaning. .
[0003]
Therefore, in order to eliminate such troubles at the time of cleaning, a flexible fastening string is passed through the threaded portion formed on the peripheral edge of the tension fabric, and from the insertion / removal opening provided in the threaded portion. A configuration is also conceivable in which both ends of the tightening string are pulled out and the tightening string is tensioned to narrow the peripheral edge and attach the tension fabric to the seat body.
[0004]
[Problems to be solved by the invention]
However, in such a case, when the tightening string is pulled out from the insertion / removal opening and pulled, a force that is intended to be spread on the insertion / removal opening is acted on by the drawn-out portion of the tightening string. As a result, while the fastening string is pulled with an excessive force or used over time, the insertion / removal opening may be torn or torn, making it impossible to use the upholstery.
[0005]
[Means for Solving the Problems]
Therefore, the present invention aims to prevent breakage of the insertion / removal opening and promote a long life of the tension fabric by providing a restraining portion that brings the drawing portions in the insertion / removal opening of the tightening string close to or in contact with each other. Is.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In other words, the seat according to the present invention includes a seat body and a stretch fabric that covers the seat body except for the central portion of the back surface, and the through portion formed in the peripheral portion of the stretch fabric has flexibility. The tightening string is passed through, and both ends of the tightening string are pulled out from the insertion / removal opening provided in the threaded part, and the tightening string is tensioned to narrow the peripheral edge portion, and the tension base The seat main body is provided with a restraining portion in the vicinity of the insertion / removal opening, and a restraining portion capable of bringing the drawn portions of the tightening string close to or in contact with each other. A hooking portion capable of hooking a tightening string drawn through the restraining portion is provided in a portion of the main body spaced from the restraining portion .
[0007]
In such a case, by using the restraining portion, the pull-out portions of the tightening cord can be pulled close to or in contact with each other. You can reduce the power to spread. Therefore, even if the tightening string is pulled strongly or used for a long time, it is possible to effectively prevent the vicinity of the insertion / removal opening of the threading portion from being torn or torn, which can contribute to a longer life.
Furthermore, a hooking portion capable of hooking the tightening string pulled out through the restraining portion is provided in a portion of the seat main body that is preferably spaced from the restraining portion in the seat body. Therefore, it is possible to easily maintain the tension state of the tightening string by holding the surplus portion of the tightening string.
[0008]
As a specific embodiment of the restraining portion that can be realized with a simple configuration, the restraining portion includes a clearance having a width that allows the drawn-out portions of the tightening cords to pass through each other in close proximity or in contact with each other. Can do.
In this case, in order to allow the drawn-out portion of the tightening string to be easily passed through the gap of the restraining portion and to securely hold the drawn-out portion in the restraining portion, the restraining portion is attached to the seat. It shall consist of a pair of resin restraining claws protruding from the back of the main body, and each of these restraining claws shall be provided with a claw body and a support portion integrally provided at the upper end of the claw body, It is desirable that the nail bodies of the restraining claws are brought into contact with each other or close to each other, and the gap is formed between the support portions.
[0009]
As a specific configuration for holding the surplus portion of the tightening cord so that the tensioned state of the tightening cord can be easily maintained, the hook portions are respectively disposed on both sides of the restraining portion. Is mentioned.
[0010]
In order to be able to flexibly cope with the length of the excess portion of the tightening string pulled out from the insertion / removal opening, the hooking portion is composed of a plurality of hooking claws protruding from the back surface of the seat body, and each of these hooking claws is made of a restraining portion. It is preferable that they are arranged with different distances from each other.
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows a chair 10 according to this embodiment. As shown in the figure, the chair 10 includes, for example, a leg 3 having leg struts 31 and leg blades 32 extending radially from the lower ends of the leg struts 31, and a seat 2 and a back supported by the leg 3. 1.
[0012]
The seat 2 includes a seat body 4 and a tension fabric 5 attached to the seat body 4. The seat body 4 is composed of a base body 4b and a cushion (not shown) disposed at the upper end of the base body 4b, and the center of the back surface 4a is supported by the upper end of the leg support 31 so as to be turnable. As shown in FIGS. 2, 3 and 4, the upholstery 5 is made of, for example, a cloth that covers the seat body 4 except for the central portion of the back surface 4a, and the bag wraps around the peripheral edge 5a. The fastening string 7 having flexibility is passed through the threaded part 6 formed by providing 63, and both ends of the tightened string 7 are inserted through the insertion / removal port 61 provided at the center of the front end of the threaded part 6. By pulling out and tightening the tightening string 7, the peripheral edge 5a is narrowed and attached to the seat body 4. The through portion 6 is provided with slits 62 at a plurality of locations other than the insertion / removal opening 61 so that the fastening string 7 passing through the slit 62 can be hooked on the inward claws T. It is. This is to prevent a part of the stretched ground 5 from being rolled up by an unexpected external force. In addition, an outer shell or the like is attached to the seat body 4 to which the upholstery 5 is attached so as to cover at least the peripheral edge portion 5a of the upholstery 5.
[0013]
Therefore, in the present embodiment, the restraining portion 8 is provided in the seat body 4 in the vicinity of the insertion / extraction opening 61 so that the drawing portions 71 and 72 of the tightening string 7 can be brought close to or in contact with each other.
As shown in FIGS. 3 and 4, the restraining portion 8 is composed of a pair of resin restraining claws 81 that are integrally suspended from the bottom surface of the recess 4 c that opens to the back surface 4 a of the seat body 4. It is arranged substantially above 61. In the state where the upholstery 5 is attached to the seat body 4, the upholstery 5 is covered with the upholstery 5.
[0014]
The constraining claw 81 has a thin plate shape in which the thickness direction is aligned with the front-rear direction. The claw body 81a has a substantially semicircular shape that swells downward in a front view, and the upper end of the claw body 81a. And a support portion 81b provided on the outer side. The opposing inner edges of each claw body 81a are brought into contact with or close to each other, and a gap S having a constant width is formed between the inner edges of the support portion 81b. The width of the gap S is set to a dimension that allows the drawn portions 71 and 72 of the tightening string 7 to pass through in close proximity or in contact with each other. The hanging dimension of the restraining claw 81 is set to be substantially the same as or slightly smaller than the depth dimension of the recess 4c.
[0015]
Further, in the present embodiment, the hooking portions 9 are arranged on both sides of the restraining portion 8 at a predetermined distance. Each hook portion 9 includes a pair of resin hook claws 91 that are integrally suspended from the bottom surface of the recess 4 c that opens to the back surface 4 a of the seat body 4. The hooking claw 91 is a thin plate having a support portion 91b and a claw body 91a provided integrally at the tip of the support portion 91b so as to protrude outward. These hooking claws 91 are arranged close to each other so as to be parallel to each other, and the thickness direction thereof is substantially matched with the front-rear direction. Further, the distance between the hooking claws 91 from the restraining portion 8 is different from each other.
[0016]
In order to attach the tension string 5 to the seat body 4 by using the restraining part 8 or the hooking part 9 according to the present embodiment configured as described above, the tightening string 7 is tensioned, for example, as follows.
First, the drawn portions 71 and 72 of the tightening string 7 drawn from the insertion / extraction opening 61 are passed through the gap S from the front to the rear. At this time, the pulling portions 71 and 72 of the tightening string 7 are directly inserted into the gap S while elastically deforming the claw body 81a of the restraining claw 81 that is abutted or deforming the tightening string 7 to be flat. May be.
[0017]
Next, the tightening string 7 drawn through the gap S is hooked and fixed to the hook portion 9 while being pulled and tensioned. As shown in FIG. 5 and FIG. 6, a hooking claw capable of tying both ends of the tightening string 7 into a ring shape and tensioning the tightening string 7 depending on the size of the ring. 9 is done by proper choice. Of course, the tightening cord 7 may be tied to the hooking claw 9 and tightened, and a knot may be formed. You may fix, for example by winding each front-end | tip part of the attached string 7. Thus, in a state where the tightening string 7 is fixed in this manner, the drawn portions 71 and 72 of the tightening string 7 are mainly caught on the upward surface 81c of the claw body 81a constituting the restraining claw 81. .
[0018]
Therefore, in such a case, by using the restraining portion 8, each of the drawn portions 71 and 72 of the tightening cord 7 can be pulled while being close to or in contact with each other. It is possible to reduce the force exerted by the seven lead portions 71 and 72 to expand the insertion / extraction port 61. Therefore, even if the tightening cord 7 is pulled strongly or used for a long time, it is possible to effectively prevent the vicinity of the insertion / removal opening 61 of the threading portion 6 from being torn or torn, thereby contributing to an increase in the life of the upholstery 5. Can do.
[0019]
In particular, in this embodiment, the restraining portion 8 is configured by abutting a pair of restraining claws 81 that are elastically deformable, so that the fastening string 7 is removed from its belly by elastically deforming the restraining claws 81. It is possible to pass through the gap S formed in the restraining portion 8. In addition, by using a plurality of hooking claws 91, the proper tightening string 7 can be fixed in accordance with the surplus length of the tightening string 7. Therefore, from such a configuration, there is also an effect that the work at the time of attaching the tension fabric 5 by tensioning the fastening string 7 becomes easy.
[0020]
In addition, this invention is not limited to the said Example. For example, the constraining portion may be of a portal type, and the arrangement position is not limited to the front center portion of the seat, and it goes without saying that it can be changed according to the part where the insertion / removal port is provided. In addition, the hooking portion only needs to be able to fix the end portion of the tightening string, and the arrangement position may be set to a site suitable for providing, for example, the rear side other than the side of the restraining portion. Furthermore, the fastening string may be fixed by a method other than the above embodiment.
[0021]
Other specific configurations of the respective parts are not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
[0022]
【The invention's effect】
As described in detail above, according to the present invention, by using the restraining portion, the pull-out portions of the tightening cord can be pulled while being close to or in contact with each other. The force exerted by the portion to widen the insertion / extraction opening can be reduced. Therefore, even if the tightening string is pulled strongly or used for a long time, it is possible to effectively prevent the vicinity of the insertion / removal opening of the threading portion from being torn or torn, which can contribute to a longer life.
Furthermore, a hooking portion capable of hooking the tightening string pulled out through the restraining portion is provided in a portion of the seat main body that is preferably spaced from the restraining portion in the seat body. Therefore, it is possible to easily maintain the tension state of the tightening string by holding the surplus portion of the tightening string.
[0023]
If the constraining portion includes a gap having a width that allows the drawn-out portions of the tightening cords to pass through each other in close proximity or in contact with each other, it is possible to realize a simple configuration.
More specifically, the restraining portion is composed of a pair of resin restraining claws protruding from the back surface of the seat body, and each of these restraining claws is provided integrally with the nail body and the upper end of the nail body. It is possible to use a structure in which the claw main bodies of the restraining claws are brought into contact with each other or close to each other, and the gap is formed between the support parts. With such a structure, the drawn-out portion of the tightening string can be easily passed through the gap of the restraining portion, and the drawn portion can be reliably and easily held in the restraining portion.
[0024]
In particular, if the hooking portions are respectively arranged on both sides of the restraining portion, it is easy to tension the fastening string.
[0025]
On the other hand, if the hook portion is composed of a plurality of hook claws protruding from the back surface of the seat body, and these hook claws are arranged with different distances from the restraint portion, they are pulled out from the insertion / removal opening. It is possible to flexibly cope with the length of the excess part of the tightening string.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a chair according to an embodiment of the present invention.
FIG. 2 is a bottom view showing particularly an outer peripheral edge portion of a chair seat in the embodiment.
FIG. 3 is a partial perspective view showing the front edge portion of the chair seat in the same embodiment as seen from the lower rear side.
FIG. 4 is a schematic partial longitudinal sectional view taken at the center of the seat of the chair in the embodiment.
FIG. 5 is a schematic explanatory view seen from below showing a state in which the fastening string in the embodiment is fixed.
FIG. 6 is a schematic explanatory view seen from below showing a state in which the fastening string in the embodiment is fixed.
[Explanation of symbols]
2 ... Seat 4 ... Seat body 4a ... Back surface 5 ... Upholstery 5a ... Peripheral part 6 ... Through part 7 ... Fastening string 61 ... Insertion / extraction port 71, 72 ... Pull-out part 8 ... Restraint part S ... Gap 81 ... Restraint claw 81a ... nail body 81b ... support part 9 ... hook part 91 ... hook nail

Claims (5)

The seat main body and a tension fabric covering the seat main body leaving the central portion of the back surface thereof are provided, and the tightening string is passed through the threaded portion formed in the peripheral edge of the tension fabric, and provided in the threaded portion. By pulling out both ends of the tightening string from the insertion / removal port, and tightening the tightening string, the peripheral edge portion is narrowed, and the upholstery is attached to the seat body,
In the seat body, in the vicinity of the insertion / removal opening, provided with a restraining portion capable of bringing the draw-out portions of the tightening string close to or in contact with each other ,
A seat characterized in that a hooking portion capable of hooking a fastening string drawn through the restraining portion is provided at a portion of the seat main body that is separated from the restraining portion . The seat according to claim 1, wherein the restraining portion includes a gap having a width that allows the drawn portions of the tightening string to pass through each other in close proximity or in contact with each other. The restraining part is composed of a pair of restraining claws protruding downward from the seat body, and each of the restraining claws is provided with a pawl body and a support part integrally provided at the upper end of the pawl body. The seat according to claim 2, wherein the claw bodies of the respective restraining claws are brought into contact with or close to each other, and the gap is formed between the support portions. The seat according to claim 1, 2 or 3 , wherein the hooking portions are respectively arranged on both sides of the restraining portion. Hook portion, the seat body comprises a plurality of latching pawls projecting downward, each of these latching pawls is the distance to the claims 1, 2, 3 or 4, wherein is arranged at different each other from the restraining portion seat.

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