JP4693220B2 - Chair - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair having a backrest or the like that is formed by attaching a tension member to a frame.
[0002]
[Prior art]
As this type of chair, in order to construct a chair with a small number of parts, a chair that has a backrest or the like by attaching a tension member that performs cushioning to a frame has been developed. In this case, the tension member is attached to the frame through an operation such as winding the edge of the tension member around the frame and fixing the back side with a tacker.
[0003]
[Problems to be solved by the invention]
However, backrest and the like are particularly easily visible from both the front and rear. For this reason, it is necessary to fix the tension member to the frame at a position where it is difficult to see from the front and rear direction in order to treat the joint portion between the tension member and the frame with good appearance, and the fixing work by the tacker is extremely complicated and inefficient. In addition to this, there is a problem that the mounting state tends to be incomplete.
[0004]
Also, in the seat, for example, those that can be folded or those that can be raised have the same problem as in the backrest because the back side of the tension member is visually recognized.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention takes the following measures.
[0006]
That is, the chair of the present invention has a structure in which the tension member is attached to the frame, and the tension member and the frame constitute a backrest, and the standing piece that stands up from the rear surface on the upper edge side of the tension member and projects rearwardly. And a groove for inserting the upright piece in the upright direction on the front surface of the frame, and with the upright piece inserted into the groove, the upright piece is inserted by a fixture inserted into the frame from the space below the frame. Is fixed in the groove.
[0007]
With such a configuration, when the tension member and the frame are polymerized, an engaged state between the standing piece and the groove is formed in the superposed portion. In this state, when the standing piece is fixed in the groove by the fixing tool, only the tension member is visible when viewed from the tension member side, only the frame is not visible when viewed from the frame side, and the fixing portion is also viewed from the tension member side. It can also be suitably concealed from the frame side. In addition, since the tension member and the frame are simply overlapped and fixed by the fixture, there is no need for troublesome work. If a screw or the like is used for the fixture, the tension member can be attached and detached very easily. It becomes possible.
[0008]
Therefore, the present invention is particularly effective when the tension member and the frame constitute a backrest.
[0009]
At least in the relationship between the frame that supports the upper edge of the backrest and the tension member, the upright piece is provided rearwardly on the upper edge side of the tension member, and the groove is provided to open to the front side of the frame. It is desirable that the upright piece is fixed in the groove of the frame by a fixture inserted from below.
[0010]
The tension member has an upper elastic body fixed to the frame on the upper edge side thereof, the upright piece is made of metal having a screw hole, and the upright piece is supported when the upper elastic body is formed of resin. An upright piece can be provided on the tension member by insert-molding the anchor plate into the resin.
[0011]
The fixing tool is, for example, a screw or a pin that engages with the upright piece.
[0012]
The frame is formed in a downward U shape in which the upper ends of the right and left standing edges are connected by a horizontal edge, the groove is provided in the horizontal edge, and the tension member is provided in front of the horizontal edge. It can be set as the structure which superposes the upper edge side.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0015]
FIG. 1 is an overall side view of a chair showing an embodiment of the present invention, and FIG. 2 is a partial rear perspective view thereof. This chair has a base leg 1, a support base 2 attached to the base leg 1, and a seat 3 and a backrest 4 supported by the support base 2, and the backrest 4 A tension member 7 is attached in a state where tension is applied between the upper frame 5 and the lower frame 6. Then, a refresh state in which only the upper frame 5 is tilted backward (see the imaginary line in FIG. 1) and a relaxed state in which the upper and lower frames 5 and 6 are tilted backward (see the imaginary line in FIG. 3) can be selectively adopted. I have to.
[0016]
The upper frame 5 is constructed between the upper end portions of the first back support rod 81 supported at the base end by the support base and projecting the front end side toward the head of the seated person. The left and right standing edge portions 51 constituting the U-shape are gently curved forward and upward so as to be convex forward, and the upper end portions thereof are connected by a horizontal edge portion 52.
[0017]
The lower frame 6 is constructed between the upper ends of the second back support rods 82 that are supported by the base end and protruded toward the waist of the seated occupant. None, the left and right standing edge portions 61 constituting the U-shape rise gently forward and upward so as to protrude forward, and then gently rise rearward and upward, between the lower end portions of the standing edge portion 61 Are connected by a horizontal edge 62.
[0018]
On the other hand, the tension member 7 has an upper elastic body 71 whose upper edge is fixed to the horizontal edge portion 52 of the upper frame 5, and an upward direction whose lower edge is fixed to the horizontal edge portion 62 of the lower frame 6. A U-shaped lower elastic body 72 and a tension fabric 73 that is attached to the front surface of the elastic bodies 71 in a state where the free ends of both elastic bodies 71 and 72 are overlapped. The upper and lower elastic bodies 71 and 72 are deformed while being bent along the rising edges 51 and 61 of the corresponding upper and lower frames 5 and 6, respectively.
[0019]
In the above configuration, in this embodiment, the standing piece 91 as shown in FIG. 4 is formed in the direction rising from the upper end side of the upper elastic body 71 constituting the tension member 7 with respect to the surface of the tension member 7, that is, the direction protruding rearward. In addition, a groove 92 is opened on the front side of the horizontal edge 52 constituting the upper frame 5. Then, with the upright piece 91 inserted in the groove 92, the upright piece 91 is fixed to the horizontal edge portion by a screw 93 which is a fixing tool inserted from a space S existing in a direction orthogonal to the insertion direction, that is, below the horizontal edge portion 52. 52 is fixed in the groove 92. As an example of a method of providing the upright piece 91 on the upper elastic body 71, the upright piece 91 is made of a metal having a screw hole, and an anchor that supports the upright piece 91 when the upper elastic body 71 is formed of resin. A method of insert-molding the plate 91a into the resin is effective. Of course, a pin may be used instead of the screw 93.
[0020]
With such a configuration, when the tension member 7 and the upper frame 5 are polymerized, an engaged state between the standing piece 91 and the groove 92 is formed in the polymerized portion. If the standing piece 91 is fixed in the groove 92 with the screw 93 in this state, only the tension member 7 is visible when viewed from the front side, and only the upper frame 5 is visible when viewed from the back side. It can be suitably concealed from the side and the back side, and the appearance of the chair can be effectively improved. In addition, since the tension member 7 and the upper frame 5 are simply overlapped and fixed by the screw 93 using the opening space S of the upper frame 5 forming a partial frame shape from the orthogonal direction, a troublesome work is unnecessary. In addition, since the screw 93 is used, the tension member 7 can be attached and detached very easily, and it is possible to quickly cope with the initial attachment or the replacement of the tension fabric 73 when it is damaged. Therefore, it can be extremely useful in the mounting structure between the tension member 7 and the upper frame 5 in the backrest 4 that is visible from both the front and the rear as in this embodiment and is easily noticeable.
[0021]
The specific configuration of each part is not limited to the above-described embodiment , and various modifications can be made without departing from the spirit of the present invention. Further, as an aspect derived from the present invention, for example, in the above-described embodiment, the upright piece 91 is provided on the tension member 7 side and the groove 92 is provided on the upper frame 5 side, but the groove is provided on the tension member 7 side. It is also possible to provide an upright piece on the upper frame 5 side.
[0022]
Further, as shown in FIG. 5, one piece 101 of the channel member 100 is insert-molded in the upper elastic body 71 constituting the tension member 7, and the standing piece 102 that stands rearward from the surface of the tension member 7 and the standing piece. A bent piece 103 that is bent downward is formed on the distal end side of 102, and a groove 110 for inserting the bent piece 103 in the bending direction is provided in the upper frame 5 so as to open on the upper surface side, and the bent piece 103 is stretched in the groove 110. It can also be configured to be hung from above using the tension of the ground 73. In that case, a mode in which the standing piece 102 is extended to a position that completely closes the groove 110 is also effective.
[0023]
Even in such a configuration, if the bent piece 103 is hooked on the groove 110 in a state where the tension is applied to the tension fabric 73 constituting the tension member 7, the bent piece 103 is separated again against the tension of the tension fabric 73. As long as there is not, it will not remove | deviate from a groove | channel, but the state which the tension member 7 and the upper flame | frame 5 superposed | polymerized is maintained. Moreover, only the tension member 7 is visible when viewed from the front side, and only the upper frame 5 is visible when viewed from the back side, and the fixing portion can be suitably concealed from both the front side and the back side. The appearance can be effectively improved. Moreover, since the tension member 7 and the upper frame 5 are simply overlapped and the bent piece 103 is simply hooked on the groove 110, no troublesome work is required, and the tension member 7 can be attached and detached very easily. become.
[0024]
Further, each of the mounting structures described above can be similarly applied between the lower edge side of the tension member 7 and the lower frame 6. However, from the viewpoint of being easily visible from the outside and easily deteriorating the appearance, it is sufficient to apply at least between the upper edge side of the tension member 7 and the upper frame 5.
[0025]
Furthermore, in the seat, for example, those that can be folded, those that can be raised , and the like can be visually recognized on the lower surface side of the tension member, so that the same effect can be obtained by applying the mounting structure described above .
[0026]
In addition, it is possible to partially provide an upright piece on a part of a frame or the like.
[0027]
【The invention's effect】
The present invention is implemented in the above-described manner, and has the effects described below.
[0028]
That is, when the tension member is attached to the frame, the chair of the present invention is provided with a standing piece in a direction to stand up with respect to the surface of the tension member on one side of the tension member or the frame, and the standing piece at the other corresponding position. Is provided in a standing direction, and the standing piece is fixed in the groove by a fixing tool in a state where the standing piece is inserted into the groove.
[0029]
For this reason, in a state where the tension member and the frame are superposed, it is possible to obtain a state in which the engaging portion of the standing piece and the groove is not exposed on both the tension member side and the frame side. Is simply superposed and fixed by a fixing tool, so that troublesome work is not required, and the tension member can be easily attached and detached, making it possible to easily cope with replacement of the tension member at the time of fouling.
[0030]
Therefore, the present invention is particularly effective when the tension member and the frame constitute a backrest.
[0031]
In particular, the mounting part between the frame and the tension member that supports the upper edge of the backrest is the most conspicuous part, so the standing piece is provided on the upper end side of the tension member toward the rear and the groove is formed on the front side of the frame. If the upright piece is fixed in the groove of the frame by a fixture that is provided open and inserted from below the frame, an appropriate mounting state can be easily realized.
[Brief description of the drawings]
FIG. 1 is a side view showing a chair according to an embodiment of the present invention.
FIG. 2 is a rear perspective view of the same part.
FIG. 3 is a perspective view corresponding to FIG. 1 and showing functions of the chair according to the embodiment.
FIG. 4 is an enlarged cross-sectional view of a main part of the chair according to the embodiment.
FIG. 5 is a cross-sectional view corresponding to FIG. 4 showing a form of a chair deeply related to the chair of the present invention.
[Explanation of symbols]
4 ... Backrest 5 ... Upper frame 7 ... Tension member 91 ... Standing piece 92 ... Groove 93 ... Fixing tool (screw)
102 ... Standing piece 103 ... Bending piece 110 ... Groove

Claims (5)

It has a structure for attaching a tension member to a frame, and the tension member and the frame constitute a backrest ,
While providing an upright piece that stands up from the back of the upper edge side of the tension member and protrudes backward, a groove for inserting the upright piece in the upright direction is provided on the front surface of the frame ,
A chair characterized in that the standing piece is fixed in the groove by a fixture inserted into the frame from a space existing below the frame in a state where the standing piece is inserted into the groove. The chair according to claim 1 , wherein only the tension member is visible when viewed from the front side, only the frame is visible when viewed from the back side, and the fixed portion of the upright piece is concealed from both the front side and the back side . The tension member includes an upper elastic body fixed to the frame on an upper edge side thereof,
The upright piece is made of metal having a screw hole, and the upright piece is provided on the tension member by insert molding an anchor plate that supports the upright piece when the upper elastic body is formed of resin. claim 1 or 2 chair according located. The chair according to claim 1 or 2, wherein the fixing member is a screw or a pin engaged with the upright piece . The frame has a downward U-shape in which the upper end portions of the left and right standing edge portions are connected by a horizontal edge portion,
The chair according to claim 1, 2, 3, or 4, wherein the groove is provided in the horizontal edge and the upper edge side of the tension member is superposed on the front surface of the horizontal edge .

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