JP2004344399A - Structure for chair, and its assembling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily attach a superficial material to a core material without wrinkles, and also to dispense with an individual member for hiding the terminal of a surface material. <P>SOLUTION: A structure 2 for a chair such as a seat or a backrest having at least the core material 3 and the surface material 4 for covering the front side of the core material 3 includes a bending part 7 for bending the core material 3 toward the front side 3c or rear side 3b of the core material 3. After the surface material 4 is stretched on the core material 3, the core material 3 is bent together with the material 4, and deformed to obtain the final shape of the structure. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chair structure such as a seat and a backrest and a method of assembling the chair structure to a support frame. More specifically, the present invention relates to a chair structure having an improved structure for attaching a skin material to a core material, and a method of assembling the chair structure.
[0002]
[Prior art]
As shown in FIG. 10, a chair 103 in which a seat 102 is directly attached to a pipe frame 101 constituting a leg is known. As shown in FIG. 11, the seat 102 includes a core member 104 made of a plate material whose shape does not change, a cushion 105 placed on the core member 104, (Staple) 106 and a skin material 107 fixed thereto. The seat 102 is placed on a receiving fitting 108 welded to the pipe frame 101 and screwed.
[0003]
In this seat 102, the terminal 107 a of the skin material 107 is tacked on the back side of the core 104, so that the terminal 107 a is frayed or a cut surface is seen, thereby impairing the aesthetic appearance. For this reason, another member 109 such as a back plate, cloth, or a covering member that covers the terminal 107a is attached to the back side of the core member 104 (see JP-A-2001-95652).
[0004]
[Patent Document 1]
JP-A-2001-95652
[0005]
[Problems to be solved by the invention]
However, in the above-described seat 102, since the tacker 106 is used for fastening the skin material 107, automation during manufacturing is difficult, and the seat 102 must be removed one by one when the seat 102 is discarded separately. Sorting work becomes complicated. Further, since the separate member 109 is used to hide the terminal 107a of the skin material 107, the man-hour for mounting is required and the number of parts is increased.
[0006]
Furthermore, since the shape of the core material 104 does not change, when the seat 102 has the hanging portion 110 as shown in FIG. 10, the skin material 107 must be stretched according to the shape of the hanging portion 110. Mounting work is difficult because wrinkles are likely to occur.
[0007]
Further, it is necessary to attach the cushion 105 and the skin material 107 to the core material 104 in a partially curved state, and it is necessary to prepare a press table corresponding to this.
[0008]
Therefore, an object of the present invention is to provide a chair structure and a method for assembling the same, in which a skin material can be easily attached to a core material and a separate member for hiding a terminal is not required.
[0009]
[Means for Solving the Problems]
In order to achieve such an object, the invention according to claim 1 provides a chair structure such as a seat or a backrest including at least a core material and a skin material covering the front side of the core material, wherein the structure is provided on the front side or the back side of the core material. It has a bent portion that allows the core material to be bent.
[0010]
Therefore, after the skin material is stretched on the core material, the core material can be bent together with the skin material and deformed into the final shape of the structure. Thereby, the skin material can be attached to the core material in a straight state before being bent, so that the skin material can be easily stretched without wrinkles. In addition, since the desired structure shape is obtained by bending the core material after the skin material is stretched, the skin material can be further stretched.
[0011]
Further, the invention according to claim 2 is provided with a mounting groove in which the end of the skin material is inserted and fixed on the side end surface of the core material.
[0012]
In this case, since the end of the skin material can be hidden by being inserted into the mounting groove, a separate member for hiding the end of the skin material can be eliminated. In addition, since there is no need to use a tacker, automation during manufacturing is facilitated, and sorting work at the time of disposal can be eliminated. Moreover, since the mounting groove is formed on the side end surface of the core material, the appearance of the front and back surfaces of the structure is not impaired, and these surfaces can be used as a design surface.
[0013]
According to a third aspect of the present invention, in the chair structure according to the first or second aspect, the structure is a seat having a forward hanging portion and a seat portion, and the bent portion is provided between the forward hanging portion and the seat portion. Is formed on the back side of the curved portion by a groove having a longitudinal direction in the left-right direction, and the bent portion is bent with the front side outward and the curved portion is formed into a curved surface.
[0014]
Therefore, the skin material can be stretched on the core material in a straight state, and then the core material can be bent to form the sagging portion. Therefore, the work of stretching the core material so that the skin material does not wrinkle can be easily performed.
[0015]
According to a fourth aspect of the present invention, in the chair structure of the third aspect, a hook provided on the back side of the front hanging portion and capable of engaging with a support frame to which the structure is attached is provided. .
[0016]
Therefore, the structure for fixing the structure to the support frame can be simplified. In addition, hooks of a straight structure covered with a skin material can be locked to the support frame, and the structure can be bent as it is to form a hanging portion, so that the structure can be bent and assembled to the support frame. At the same time, it can be easily performed.
[0017]
According to a fifth aspect of the present invention, in the chair structure of the first or second aspect, the structure is a backrest, and the bent portion is formed on the front side of the central portion with the left-right direction as a longitudinal direction, In addition, it is configured to be folded in two with the front side outside at the bent portion.
[0018]
Therefore, the skin material is exposed on both the front surface and the back surface of the structure after being folded in two, so that the appearance can be improved.
[0019]
On the other hand, the invention according to claim 6 is a method for assembling a chair structure in which the chair structure is assembled to a support frame according to claim 2, wherein a skin material is attached to a core material, and the structure is bent at a bent portion. It is to be mounted on the support frame.
[0020]
Therefore, since the skin material can be attached to the core material in a straight state, the work of stretching the core material so that the skin material does not wrinkle can be easily performed. In addition, by stretching the skin material and then bending it, the skin material can be stretched.
[0021]
According to a seventh aspect of the present invention, in the method for assembling a chair structure according to the fourth aspect, the hook is locked to the support frame and the seat portion is bent while bending the bent portion. To the support frame.
[0022]
Therefore, the hook of a straight structure with a skin material can be locked to the support frame, and the structure can be bent as it is to form a hanging portion, so that the structure can be bent and assembled to the support frame. At the same time, it can be easily performed.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail based on the best mode shown in the drawings.
[0024]
1 to 5 show an example of an embodiment of a chair structure of the present invention. The structure 2 of the chair 1 is a seat or a backrest, an armrest, a headrest or the like including at least a core material 3 and a skin material 4 covering the front side of the core material 3. The structure 2 is provided with a mounting groove 5 formed on the side end surface (wood end surface) of the core material 3 and into which the end of the skin material 4 is inserted and fixed. Since the end of the skin material 4 can be hidden by being inserted into the mounting groove 5, a separate member for hiding the end of the skin material 4 can be eliminated.
[0025]
The end of the skin material 4 is folded over the entire circumference and fitted into the mounting groove 5 on the side end surface of the core material 3. Further, the terminal of the skin material 4 is fixed inside the mounting groove 5 by hot melt adhesion. The adhesive used here is, for example, a thermoplastic resin. The structure 2 has a cushion 6 between the core material 3 and the skin material 4. In the present embodiment, the core 3 is made of polypropylene, the skin 4 is made of polyester, and the cushion 6 is made of polyurethane. However, it goes without saying that the material of each member is not limited to these.
[0026]
Further, the structure 2 of the chair 1 has a bent portion 7 on the front side or the back side of the core member 3 so that the core member 3 can be bent. In the case of the present embodiment, the bent portion 7 is formed by forming a straight groove in the core 3, and the core 3 can be bent at a peripheral portion of the groove.
[0027]
In the present embodiment, the structure 2 is a seat having a front hanging portion 8 and a seat portion 9. The bent portion 7 is constituted by a plurality of grooves formed on the back side of the bent portion 10 between the front hanging portion 8 and the seat portion 9 with the left-right direction as a longitudinal direction. The groove forming the bent portion 7 has a triangular shape opened in the bending direction, and the core material 3 is partially thin. In this case, since the groove is closed when bent toward the back surface 3b side to prevent further deformation, it can be bent into a desired shape. Here, the shape of the groove is not particularly limited to a triangle, and may be rectangular, trapezoidal, or semicircular, but a groove having a triangular shape, especially an isosceles triangular shape, is required to be able to bend while maintaining a constant bent shape. Is preferred. Further, the structure 2 is bent with the bending groove 7 with the front side facing outward, so that the bent portion 10 is formed into a curved surface.
[0028]
Further, a hook 11 is provided on the back side of the front hanging portion 8. The hook 11 is a part of a support frame 12 to which the structure 2 is attached, for example, in this embodiment, as shown in FIGS. To be locked.
[0029]
A procedure for assembling the above-described structure 2 to the support frame 12 of the chair 1 will be described below.
[0030]
Assembling of the structure 2 to the support frame 12 is performed by attaching the skin material 4 to the core material 3 that has been developed so as to surround the cushion material 6 in advance, and then attaching the hook 11 on the distal end side of the core material 3 to the front support frame 13. The core material 3 is arranged along the seat receiving portion 12 s of the support frame 12 while being hooked and bent at the bent portion 7, and is assembled to the support frame 12 by using the receiving bracket 14. That is, the cushion 6 is placed on the core material 3 in a straight state before being bent, and is wrapped with the skin material 4 from above. Then, the end of the skin material 4 is fitted into the mounting groove 5 on the side end surface of the core material 3 and fixed with an adhesive. For this reason, since a flat press table can be used, a dedicated device is not required and cost can be reduced. When the end of the end of the skin material 4 comes out of the mounting groove 5, it may be cut as necessary.
[0031]
When the skin material 4 is inserted into the mounting groove 5, the cushion 6 is appropriately crushed. Thereby, the skin material 4 after attachment can be made to have tension.
[0032]
When the structure 2 is assembled to the support frame 12, the structure 2 is bent at the bent portion 7 to form a bent portion (front hanging portion) 10. For this reason, since the skin material 4 is stretched on the core material 3 in a straight state before bending, the core material 3 is bent, so that the work of stretching the core material 3 so that the skin material 4 does not wrinkle can be easily performed. become able to.
[0033]
When the structure 2 is assembled to the support frame 12, the hook 11 of the structure 2 in a straight state before being bent is locked to the front support frame 13 (shown by a solid line in FIG. 3 and a dashed line in FIG. 4). In this state, the bent portion 7 is bent at the bent portion 7 to form a bent portion 10 (shown by a two-dot chain line in FIGS. 3 and 4). Further, the seat 9 is screwed to the receiving fitting 14 of the support frame 12 by the screw member 17. Thereby, the deformation and processing of the structure 2 and the assembling to the support frame 12 can be performed at the same time, so that the workability can be improved.
[0034]
Here, the receiving fitting 14 is fixed to the lower surface side of the seat receiving portion 12s of the support frame 12, as shown in FIG. Therefore, at least the side end surface 3 a of the core member 3 of the structure 2 placed on the receiving fitting 14 is hidden by the support frame 12. Therefore, since the mounting grooves 5 on both sides can be hidden by the seat receiving portion 12s of the support frame 12, the appearance can be further improved. Further, since the mounting groove 5 of the core member 3 at the front end of the structure 2 and the end of the skin material 4 are arranged downward, they are not exposed on the front side.
[0035]
The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the above-described embodiment, the groove forming the bent portion 7 is formed on the back side (the back surface 3b side) of the bent portion 10, but is not limited to this, and is formed on the front side (the front surface side) of the bent portion 10. You may. In the above-described embodiment, the structure 2 has the bent portion 7 in the bent portion 10 because the structure 2 has the front hanging portion 8. However, the present invention is not limited to this. For example, the rear portion of the structure 2 is bent. If it is shaped, it may have a bent portion 7 at the rear. In some cases, the present invention can be applied to a structure having a curved portion on both sides or at least one side of the structure.
[0036]
Further, in the above-described embodiment, the skin material 4 is fixed to the mounting groove 5 with a thermoplastic adhesive. However, the present invention is not limited to this, and various adhesives can be used. Further, in the above-described embodiment, the skin material 4 is fixed to the mounting groove 5 with an adhesive, but the present invention is not limited to this, and various fixing methods can be applied. For example, as shown in FIG. 7, the skin material 4 may be sandwiched and fixed between the fixing member 15 fitted and fixed in the mounting groove 5 and the mounting groove 5. As shown in FIG. 8, an annular core 16 may be attached to the end of the skin 4 by sewing or the like, and the core 16 may be inserted into the attachment groove 5. Alternatively, the skin 4 may be fixed by melting the mounting groove 5 by irradiating ultrasonic waves while the skin 4 is inserted into the mounting groove 5 using an ultrasonic welder, though not shown. Further, the terminal of the skin material 4 may be fixed in a state of being fitted into the mounting groove 5 by friction using rubber or the like.
[0037]
Further, in the above-described embodiment, the structure 2 is a seat, but is not limited thereto, and may be a backrest. In this case, as shown in FIG. 9, for example, the structure 2 is bent by forming the bent portion 7 on the front side 3c of the center portion of the core material 3 with the left-right direction as the longitudinal direction (FIG. 9A). In the part 7, the front side 3c is set to the outside so that the sheet can be folded in two (FIG. 7B). Here, the bent portion 7 is constituted by one groove, and the plastic core 3 functions as a resin hinge. According to this, since the skin material 4 is exposed on both the front surface and the back surface of the structure 2 after being folded in two, the appearance can be improved. Further, when the structure 2 is a backrest, for example, in the case of a shape having a curved portion at the upper portion, a bent portion 7 is formed on the core material 3 at that portion, and the bent portion is formed by bending. May be.
[0038]
Furthermore, in the above-described embodiment, the structure 2 is a seat or a backrest. However, the present invention is not limited to this, and can be applied to various structures 2 of the chair 1 such as armrests and footrests. Further, the chair is not limited to the fixed chair having the pipe legs as shown in the drawings, but may be a folding chair, a cantilever type chair, a swivel chair, or a car chair or an airplane seat, or any chair such as a seat chair. It is applicable to the structure of.
[0039]
Further, in the above-described embodiment, the end of the skin material 4 is fitted and fixed to the side surface (wood edge) 3a of the core material 3, so that the one with the skin material 4 is used as the surface. The back surface 3b of the core material 3 without the material 4 may also be used as the front surface since the terminal of the skin material 4 is not exposed. In this case, if there is no need for a member that hides the back surface 3b of the core material 3, the structure 2 can be used reversibly because it can be used as it is as the front surface.
[0040]
On the other hand, in the above-described embodiment, the structure 2 includes the bent portion 7 formed of a groove, but is not limited thereto. For example, a bent portion 7 that can be bent by a thin portion, a slit, or the like may be configured. Further, mounting grooves 5 are provided on the side surfaces (wooden ends) 3a of the core material 3 so that the ends of the skin material 4 are fitted and fixed thereto. The groove 5 may be provided, and the terminal of the skin material 4 may be fitted therein. Further, in the above-described embodiment, the structure 2 is provided with the mounting groove 5 and the terminal of the skin material 4 is inserted into the mounting groove 5 and fixed thereto. However, in some cases, the skin material is attached to the expanded core material 3. The skin material 4 may be stretched so that the core material 3 is bent at the bent portion 7 after the core material 3 is fixed by a fastening method such as an adhesive material, tacker, or electromagnetic welding.
[0041]
When focusing only on enabling the structure 2 to be used reversibly, a mounting groove 5 for fitting the end of the skin material 4 and fixing the core material 3 to the core material 3 is provided on the side surface (wood end) 3a of the core material 3. Is enough. In this case, the mounting groove 5 on the side surface of the core material is hidden by the frame, and the back surface 3b of the core material 3 is not exposed at the end of the skin material 4, so that a member that hides the back surface 3b of the core material 3 is also required. It can be used as a surface as it is. Therefore, even when a core material in which the curved portion 10 such as the hanging portion is formed by injection molding or the like is used in advance, the problem associated with the terminal treatment of the skin material 4 can be solved.
[0042]
【The invention's effect】
As is apparent from the above description, according to the chair structure of the first aspect, the skin material is attached to the expanded core material before bending, and then the core material is bent along the bent portion and the skin is simultaneously formed. Since the material 4 can be stretched, the skin material can be easily stretched without wrinkles, and workability can be improved. In addition, since the tension can be applied by further bending the state in which the skin material is stretched and attached, stronger tension can be given to the skin material. In addition, since a flat press table can be used when the skin material 4 is attached, the same device as the other seat having no curved portion can be used for manufacturing the seat having the curved portion, and the cost can be reduced. Down is achieved.
[0043]
Further, according to the chair structure of the second aspect, the terminal of the skin material can be hidden by being inserted into the mounting groove, so that a separate member for hiding the terminal of the skin material can be eliminated. Therefore, the number of components of the structure and the number of manufacturing steps can be reduced. In addition, since there is no need to use a tacker, automation during manufacturing is facilitated, and sorting work at the time of disposal can be eliminated. Moreover, since the mounting groove is formed on the side end surface of the core material, the appearance of the front and back surfaces of the structure is not impaired, and these surfaces can be used as a design surface.
[0044]
According to the structure of the chair according to the third aspect, since the skin material can be stretched after the skin material is stretched on the core material in a straight state, the core material can be bent to form the front hanging portion. The work of stretching the core material can be easily performed.
[0045]
According to the chair structure of the fourth aspect, the number of screw members conventionally used can be reduced by using the hook, and the structure for fixing the structure to the support frame can be simplified. In addition, hooks of a straight structure covered with a skin material can be locked to the support frame, and the structure can be bent as it is to form a hanging portion, so that the structure can be bent and assembled to the support frame. At the same time, it can be easily performed.
[0046]
Furthermore, according to the chair structure of the fifth aspect, the skin material is exposed on both the front surface and the back surface of the structure after being folded in two, so that the appearance can be improved.
[0047]
On the other hand, according to the method for assembling a chair structure according to claim 6, since the skin material can be attached to the core material in a straight state, the work of stretching the core material so that the skin material does not wrinkle is easily performed. Will be able to do it. In addition, by stretching the skin material and then bending it, the skin material can be stretched.
[0048]
According to the method for assembling a chair structure according to the seventh aspect, the hook of the straight structure with the skin material is engaged with the support frame, and the structure is bent as it is to form a front hanging portion. Therefore, the structure can be easily folded and assembled to the support frame at the same time.
[Brief description of the drawings]
FIG. 1 is a central longitudinal sectional side view showing a main part of a chair structure of the present invention.
FIG. 2 is a perspective view showing a chair structure as viewed from the back side.
FIG. 3 is a side view showing a state where the structure is attached to a support frame.
FIG. 4 is a perspective view showing a state in which a structure is attached to a support frame.
FIG. 5 is a longitudinal sectional side view showing a state where the structure is attached to a support frame.
FIG. 6 is a perspective view showing a state in which another embodiment of the structure is attached to a support frame.
FIG. 7 is a longitudinal sectional side view showing another embodiment of the structure.
FIG. 8 is a longitudinal sectional side view showing still another embodiment of the structure.
FIGS. 9A and 9B are central longitudinal sectional side views showing an embodiment in which the structure is a backrest, wherein FIG. 9A shows a state before bending and FIG. 9B shows a state after bending.
FIG. 10 is a perspective view showing a state in which a conventional structure is attached to a support frame.
FIG. 11 is a longitudinal sectional side view showing a conventional structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Chair 2 Structure 3 Core material 4 Skin material 5 Mounting groove 7 Bending part 8 Front hanging part 9 Seat part 10 Curved part 11 Hook 12 Support frame 13 Front support frame (support frame)

Claims (7)

In a chair structure such as a seat or a backrest provided with at least a core material and a skin material covering the front side of the core material, a bent portion that allows the core material to be bent is provided on the front side or the back side of the core material. A chair structure comprising: The chair structure according to claim 1, further comprising a mounting groove into which a terminal of the skin material is inserted and fixed at a side end surface of the core material. The structure is a seat having a forward hanging portion and a seat portion, and the bent portion is formed by a groove having a longitudinal direction in the left-right direction on the back side of the curved portion between the forward hanging portion and the seat portion. The chair structure according to claim 1, wherein the bent portion is bent with the front side facing outward in the bent groove to form the curved portion into a curved surface. The chair structure according to claim 3, further comprising a hook provided on the back side of the front hanging portion and hookable to a support frame to which the structure is attached. The structure is a backrest, and the bent portion is formed on a front side of a central portion with a left-right direction as a longitudinal direction, and the folded portion is folded in two with the front side outside. The chair structure according to claim 1 or 2, wherein 3. The method of assembling a chair structure according to claim 2, wherein the skin material is attached to the core material, and the structure is bent at the bent portion and assembled to the support frame. A method of assembling a chair structure, characterized by the following. 5. The method for assembling a chair structure according to claim 4, wherein the hook is locked to the support frame, and the seat is assembled to the support frame while bending the bent portion. A method for assembling a chair structure.

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