JP2675959B2 - Chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a full body type chair installed in a rest room, a smoking room, a waiting room or the like.

2. Description of the Related Art Conventionally, this type of chair has a seat and a main body for holding the seat, and the seat and the main body are each formed by attaching a cushion material to a core material. But usually,
The body is made by attaching a cushion material to a core material in which the backrest and legs are integrated, and the core material is formed, for example, by bending a plywood with a predetermined plate thickness so that an intended curved surface is obtained. Alternatively, it is formed by a combination of an iron frame and a soft polyurethane foam. In general, since the backrest and the legs are integrally formed to form the main body, the outer shape is formed by using a cubic curved surface so that the curved surface from the backrest to the legs is smoothly continuous.

However, in the above configuration, when the core material of the main body is formed of plywood, the quadric surface can be easily produced, but the cubic surface is
Due to the nature of plywood, it is difficult to process it, and when producing a product that does not have a problem in strength, it is difficult to produce a product with a good appearance due to the thickness of the plywood. However, sometimes the seat was difficult to attach to the body due to incorrect dimensions. Also, in the case of an iron frame, it is possible to manufacture a cubic curved surface of a desired shape, but the process and structure such as bending of the frame and injection of polyurethane are complicated and diversified. It was also heavy and required manpower when changing the layout. The present invention does not impair the convenience of installation.
The purpose is to eliminate such problems.

In order to achieve the above object, the present invention takes the following measures. That is, the chair according to the present invention is a blow-molded body in which a seat, a backrest and legs are integrally formed to hold the seat, and the body has a hollow portion formed by an inner wall and an outer wall. comprising a core material, provided on the outer wall of the recess of the abutting depth to inner wall the seat is attached, Ri Na and secured to the outer wall to the inner wall by inserting the fastening means into the recess, the recess of the outer wall
The inner wall of the abutting part has a convex part that protrudes to the seat mounting side.
Characterized by comprising. Further, in order to facilitate the mounting of the seat, the recessed portion of the outer wall is formed at a plurality of positions at a predetermined distance at substantially the same position in the height direction of the main body, and the inner wall of the portion where each recessed portion abuts, A protrusion is formed corresponding to the recess and protrudes toward the seat mounting side, and a ridge that bulges in the same direction as the protrusion is provided at the same height position as the protrusion between at least the protrusions of the inner wall. The tightening means is composed of bolts and nuts, and the seat is mounted on the convex strip and is fixed by a seat bracket fitted with bolts and nuts for tightening the concave and convex parts. Is preferred.

With such a structure, even if a blow molded core material molded from a thin sheet material is used for the main body to form a structural material, a recess having a depth that contacts the inner wall is formed. Since it is provided on the outer wall, and the tightening means is inserted into the recess and the recess is fixed to the inner wall by the tightening means, the inner wall is substantially integrated with the outer wall, and the strength is increased in that part, and the hollow part is formed. The inner wall and the outer wall that are formed do not bend irregularly due to an external force. Therefore, in a blow-molded core material in which a complicated cubic curved surface is formed by blow molding, it is possible to increase the overall strength of the main body itself that holds the seat. Further, by forming a convex portion at a corresponding portion of the inner wall corresponding to the concave portion of the outer wall, it is possible to align the concave portion with the convex portion and fix the outer wall to the inner wall, so that it is easy and Both walls can be securely tightened at a predetermined position, the outer wall can be fixed to the inner wall, and the convex portion can hold the seat. Further, a plurality of recesses and protrusions are provided, a ridge is formed between the protrusions of the inner wall, the tightening means is composed of a bolt and a nut, and the seat mounted on the seat mounting side of the protrusion by the bolt and the nut. If the seat mounted on the ridge is fixed to the main body by using the bracket, the seat can be easily attached. Moreover, since the ridges are formed between the protrusions, the strength of the seat mounting portion of the main body is increased in combination with the strength of the protrusions tightened by the tightening means.

An embodiment of the present invention will be described below with reference to the drawings. The lounge chair 100 shown in FIG.
And a main body 4 for holding the seat 1 in which the backrest 2 and the legs 3 are integrally formed. The seat 1 is formed by surrounding a wooden seat plate 11 with a cushion material and attaching a cloth exterior material to the cushion material. The mounting of the seat plate 11 will be described later. With regard to the configurations of the seat 1 and the cushion material, those widely known in the art may be used.
The main body 4 includes a blow molding core member 41 having a hollow portion 45 formed in a sealed state by an inner wall 44 and an outer wall 43, a cushion member (not shown) surrounding the blow molding core member 41, and a blow molding core. The adjuster 42 is attached to the lower edge of the material 41 at four positions. The blow-molded core material 41 is produced by ordinary blow molding, in which a bag-shaped sheet member made of synthetic resin is sandwiched by a mold, compressed air is sent into the sheet member and the sheet member is pressed against the mold, and molded. It may be done. As is apparent from FIG. 2, the blow-molded core material 41 is formed in a substantially U shape in a plan view, and the backrest 2 and the legs 3 continuous to the left and right of the backrest 2 are integrated. Thus, the left and right side surface portions 43a of the outer wall 43 forming the outer peripheral surface of the blow-molded core material 41 are provided with recesses 5 at one location, and the back surface section 43b is provided with recesses 5 at two locations. The recesses 5 formed at a plurality of locations separated by a predetermined distance are provided at substantially the same position in the height direction of the blow molding core material 41, but the back surface portion 43.
The recess 5 in b is formed at a position slightly lower than that of the side surface 43a. As shown in FIG. 5, each recess 5 has an inner wall 44 that constitutes an inner peripheral surface of the blow-molded core material 41.
Is formed into a truncated cone shape having a depth that abuts against, a bolt 81 that is the tightening means 8 can be inserted into substantially the center of the back wall 51, and a size sufficient for the tightening tool. In the case of this embodiment, the inner wall 4 of the portion where each recess 5 abuts
4 is provided with a convex portion 6 corresponding to the concave portion 5 and protruding toward the seat 1 mounting side, and a convex strip 7 that bulges in the same direction as the convex portion 6 is projected between the respective convex portions 6 of the inner wall 44. It is provided at the same height as the part 6. The convex portion 6 has a size to accommodate the inner wall 51 of the concave portion 5, and unlike the concave portion 5, has a vertically long quadrangular shape, and the seat receiving metal fitting 9 is attached to the surface of the seat 1 attachment side. A groove 61 for forming is formed. Also, the convex portion 6
Between the space and the inner wall 44 of the front portion of the convex portion 6 formed on the side surface portion 44 a, the convex strip 7 is formed continuously with the convex portion 6. Accordingly, the blow-molded core material 41 has the same structure as the arc-shaped rib formed by the convex portion 6 and the convex strip 7 on the inner surface. The ridge 7 has a height (depth) equivalent to that of the ridge 6, which is a size sufficient to mount the edge portion of the seat plate 11 of the seat 1, and extends from the side surface portion 44a of the inner wall 44 to the back surface portion. 44b
The width of the back surface portion 44b is increased so that the strength of the back surface portion 44b is increased.
In accordance with the width of the ridge 7, the dimension of the ridge 6 in the longitudinal direction is also larger in the back portion 44b. The back portion 43
The height position of the projection 6 of the inner wall 44 is slightly different from that of the projection 5 of the inner wall 44 in correspondence with the recess 5 of the inner wall 44 located slightly below the recess 5 of the side surface 43a.
The protrusion 7 is lower than the side surface portion 44a in the back surface portion 44b. Therefore, the seat 1 is fixed to the main body 4 in a slightly tilted state. In such a configuration, the seat plate 11 of the seat 1 has the seat bracket 9 attached to the convex portion 6 by the bolt 81 and the nut 82 that are the tightening members 8.
To be fixed by the bolt 91 and the nut 9 2. In this case, the seat bracket 9 is attached to the outer wall 4 of the blow molding core member 41.
This is performed at the same time as the work of fixing 3 to the inner wall 44. That is, when the concave portion 5 and the convex portion 6 of the blow-molded core material 41 are tightened with the bolt 81 and the nut 82, the seat bracket 9 is tightened together with the bolt 81 and the nut 82 at that portion. It is something. In this way, after the seat receiving fittings 9 are attached to the blow-molded core material 41 at four positions, the seat plate 11 of the seat 1 is placed on the seat receiving fittings 9 and the ridges 7 of the blow-molded core material 41. Then, the seat plate 11 is mounted and tightened with the bolts 91 and the nuts 92 so as to be fixed to the blow molding core material 41. A cushion material and an exterior material are attached to the seat plate 11 and the blow molding core material 41. As described above, since the blow-molded core material 41, which is the core material of the main body 4, is created by blow molding, the structure can be simplified and a complicated cubic curved surface can be easily manufactured. Further, since the hollow portion 45 is provided between the outer wall 43 and the inner wall 44, the weight can be sufficiently reduced. Further, while being lightweight, the outer wall 43 is fixed to the inner wall 44 with the bolts 81 and the nuts 82 at the portions of the recesses 5 provided on the side surface portion 43a and the back surface portion 43b. The strength of the blow-molded core material 41 increases at the portion where 5 is present, and it is possible to obtain the necessary and sufficient strength as a chair even though it is a blow-molded product. Moreover, since the nuts 82 and the tip portions of the bolts 81 used for tightening are accommodated in the recesses 5, they protrude to the outer surface of the blow molding core material 41 even when the seat plate 11 of the seat 1 is attached. The protrusions can be eliminated, danger can be prevented, and the appearance of the main body 4 can be easily improved. Also corresponds to the recess 5 of the outer wall 43
Then, the convex portion 6 is formed on the corresponding portion of the inner wall 44.
Then, the concave portion 5 is aligned with the convex portion 6 so that the outer wall 43 becomes the inner wall 44.
Positioning for fastening can be done easily and securely.
It can be fastened by tightening both walls in place.
Moreover, the convex portion 6 can hold the seat 1.
You. Since the ribs are formed by connecting the protrusions 6 provided corresponding to the recesses 5 by the protrusions 7, it is possible to obtain strength without processing rib inserts or the like. Further, the seat plate 11 serving as the seat 1 has all the edge portions except the front edge portion 11a thereof held by the convex portions 6 and the convex stripes 7 of the blow molding core material 41. By the substantial rib structure formed by 7 and 7, there is no need to press the seat plate 11 against the blow-molded core material 41 at the time of mounting, which facilitates the assembling work and, at the time of use, the edge. Since the part is integrated with the blow-molded core material 41, the stability of the seat 1 is increased. Note that the present invention is not limited to the embodiments described above. In addition, the configuration of each unit is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

As described in detail above, the present invention uses a blow-molded core material as a core material of a main body, and fixes the outer wall of the blow-molded core material to the inner wall in a recess provided in the outer wall. Therefore, even if there is a hollow part between the inner wall and the outer wall, the necessary and sufficient practical strength can be easily created with a simple structure, and a complicated cubic surface is provided, and various designs are possible. It is versatile and can be made lightweight. In addition, the inner wall where the recess of the outer wall contacts is the seat
Since it has a protrusion that protrudes to the mounting side,
The outer wall and the inner wall can be easily and surely aligned with the inner wall
Since it can be attached to, the simplification of the assembly can be achieved. Only
Can also hold the seat by its convex portion,
It is possible to increase the strength and certainty of the. Also concave
A plurality of parts and protrusions, forming a ridge between the protrusions on the inner wall,
The tightening means consists of bolts and nuts, and
The seat bracket attached to the seat mounting side of the convex
If the seat mounted on the ridge is fixed to the main body using
Easy to attach and increase the strength of the seat mounting part of the main body
Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view of the blow-molded core material of the same embodiment as seen from the front.

FIG. 3 is a perspective view of the blow-molded core material of the embodiment as seen from the rear.

FIG. 4 is a perspective view showing a state immediately before the cushion material of the embodiment is attached.

FIG. 5 is an enlarged sectional view showing a main part of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Seat 2 ... Backrest 3 ... Leg 4 ... Main body 5 ... Recessed part 6 ... Convex part 7 ... Convex strip 8 ... Tightening means 9 ... Seat receiving metal fitting 41 ... Blow molding core material 43 ... Outer wall 44 ... Inner wall 45 ... Hollow part

Claims (2)

(57) [Claims] 1. A blow molding comprising a seat and a main body having a backrest and legs integrally formed to hold the seat, the main body having a hollow portion formed by an inner wall and an outer wall. comprising a core material, provided on the outer wall of the recess of the abutting depth to inner wall the seat is attached, Ri Na and secured to the outer wall to the inner wall by inserting the fastening means into the recess, concave outer wall
The inner wall of the part where the part abuts is a protrusion that protrudes toward the seat mounting side.
A chair characterized by having a section . 2. A seat having a seat, a backrest and legs integrally formed.
And a main body having a hollow portion formed by an inner wall and an outer wall.
With a blow-molded core material
A depth recess that contacts the wall is provided on the outer wall, and the recess is tightened inside the recess.
The outer wall is fixed to the inner wall by inserting the tightening means.
The parts are separated by a predetermined distance at almost the same position in the height direction of the main body.
It is formed at multiple points, and
The inner wall has a convex part that protrudes toward the seat mounting side in correspondence with the concave part.
And at least between the protrusions on the inner wall.
Equipped with a ridge protruding in the same direction as the ridge at the same height as the ridge
The tightening means consists of bolts and nuts,
Is placed on the convex strip and tightens the concave and convex portions.
With a seat bracket that can be attached with bolts and nuts
A chair characterized by being fixed.