JPH08112158A - Knockdown chair - Google Patents

Abstract

PURPOSE: To improve connecting strength, and facilitate connecting work by connecting upper and lower parts of a back member whose front face plate is formed so as to be freely openable and closable to side members, and holding an opening-closing part at a prescribed rotational angle by a holding means. CONSTITUTION: A front member 7 is connected to front receiving tools 3 of a pair of side members 1 by front member connecting tools 8 so as to be freely mountable and demountable, and a lower end part of a back member 11 is connected to rear receiving tools 4 so as to be freely mountable and demountable, and a pair of lower connecting tools 15 are installed in width directional both end parts of a lower part of a front face plate 13 of the back member 11. An opening-closing part 17 whose upper end can freely rotate by a hinge is arranged on the front face plate 13. In the back member 11, locking holes 15b of the lower connecting tools 15 are engaged with a pair of pins 4b of the rear receiving tools 4, and fastening bolts 22 are inserted into through holes 19 of an upper connecting tool 18, and are screw-fitted to nuts 10 embedded in the side members 1. In that case, when the opening-closing member 17 is opened, fastening work is facilitated. As a result, a load applied to the back member 11 is dispersed to the lower and upper connecting tools 15 and 18, and an assembling condition can be reliably maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prefabricated chair which can be easily disassembled and assembled.

[0002]

2. Description of the Related Art There are known prefabricated chairs that a purchaser can assemble and disassemble by himself. According to such an assembled chair, the purchaser can easily take it back from the store, and it can be disassembled and stored when not in use, which is convenient.

Conventionally, as such an assembly type chair, the one shown in Japanese Utility Model Publication No. 47-29767 is known. The prefabricated chair shown in this publication has a cushion.
Both ends of the cushion in the width direction are connected to the middle portions in the height direction of the pair of armrests by support pieces. In the rear part of the armrest, a backskid quilt is provided in an upright position in which the upper end side is inclined rearward at a predetermined angle, and the widthwise both ends of the lower end are connected to the inner surface lower ends of the pair of armrests. Are connected by a fixing member. That is, the chair configured as described above can be disassembled into a cushion, an armrest, and a back cushion.

By the way, according to the chair having such a structure, only the lower end of the back cushion is connected to the armrest. Therefore, when the user seated on the cushion comfortably leans against the back cushion, the load is concentrated on the lower end of the back cushion, so that the fixing member connecting the lower end and this fixing member are engaged. There was a case where the combined bolt was damaged and the strength was not sufficient.

In order to obtain the mounting strength of the backslide member,
Not only the lower end portion but also the upper portion may be connected to the armrest body by using a predetermined fixing member. In that case, it is conceivable to connect the front surface or the back surface of the backslide member to the armrest by the fixing member.

However, in such a structure, the fixing member is exposed on the front surface side or the back surface side of the backslider member, so that the appearance may be greatly deteriorated. In particular, when exposed on the front side, it may hit a user leaning on the backslider member, which poses a problem in terms of performance.

[0007]

As described above, in the conventional assembly type chair, only the lower end portion of the backslider member (back member) is connected to the armrest, so that the seat is seated on the cushion (seat member). If the user leans against the backslider member, stress may concentrate on the lower end portion of the backslider member, resulting in damage.

In order to prevent stress from concentrating on the lower end of the backslide member, if the upper portion of the backslide member is also connected to the armrest, the fixing member used for the connection is the front surface of the backslide member. Since it is exposed to the side or the back side, the appearance may be deteriorated.

The present invention has been made based on the above circumstances, and an object of the invention is to connect not only the lower end portion of the back member but also the upper portion to the side member to improve the connection strength, and at that time, the back member. It is an object of the present invention to provide a prefabricated chair in which the upper connecting tool that connects the upper parts of the above is not exposed to the outside and the connecting work is easy.

[0010]

In order to solve the above-mentioned problems, the present invention has a pair of side members, a connecting member for connecting the front end sides of these side members at a predetermined interval, and a front plate. A back member which is provided on the rear end side of the member in an upright state and has an upper portion of the front plate formed as an opening / closing portion which can be opened and closed with the upper end as a fulcrum, and a lower connecting means for connecting the lower portion of the back member to the side member. And an upper connecting means for connecting an upper portion of the back member corresponding to the opening / closing portion to the side member, and holding the opening / closing portion of the back member on an inner surface side thereof at a predetermined rotation angle at which the upper connecting means is located. And a floor member provided between the pair of side members.

[0011]

According to the above construction, since the lower end of the back member is connected to the side member by the lower connecting means and the upper part is connected by the upper connecting means, the lower member is attached to the lower end when the user leans on the back member. You can avoid stress concentration,
Also, since the front plate of the back member is provided with an opening / closing part,
By rotating the opening / closing portion in the opening direction, the connecting work of the back member and the side member by the upper connecting means can be facilitated, and by holding the opening / closing portion at a predetermined rotation angle, the upper connecting means is It prevents the back member from projecting to the front side.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a prefabricated chair according to a first embodiment of the present invention, which has a pair of side members 1. Each side member 1 is in the shape of a rectangular plate, and legs 2 are provided at both ends of the lower end surface in the front-rear direction. Further, the inner surface of the side member 1 is provided with a front receiver 3 at the lower end on the front end side, and a rear receiver 4 at the lower end on the rear end side.

Each of the receiving members 3 and 4 has a plate 3a mounted and fixed to the side member 1 as shown in FIG. 4 (a).
4a, a pair of headed pins 3b and 4b and plates 3a and 4a provided on each plate so as to be spaced apart from each other in the vertical direction.
It is composed of a plurality of mounting holes 3c and 4c formed in the peripheral portion of the. A support shaft 6 is projectingly provided above the rear receiver 4, and a nut 10 is embedded in the upper rear portion of the support shaft 6.

A front member 7 is detachably connected to the front receivers 3 of the pair of side members 1. That is, the front member 7 has a strip-like shape, and the front connecting members 8 are attached to both ends of the inner surface thereof. This front connector 8 is shown in FIG.
As shown in (b), it is made of an angle member, and one side thereof has a mounting hole 8a for screwing to the front member 7, and the other side thereof has a pair of locking holes 8b vertically spaced from each other. Has been drilled. The lower end of the locking hole 8b is the pin 3b,
4b has a diameter larger than that of the head portion, and has a taper shape having a diameter smaller than the head portion as it goes upward.
Further, on the inner surface of the front member 7, a front receiving bar 9 is attached above the front connecting member 8 over the entire length in the width direction along the horizontal direction.

The front member 7 engages the locking holes 8b of the pair of front connecting members 8 with the pins 3b of the front receiving members 3 of the pair of side members 1 which are separated in parallel at a predetermined interval. Therefore, it is detachably connected.

A lower end of a back member 11 is detachably connected to the rear receiving member 4 of the pair of side members 1. That is, the back member 11 has a rectangular frame body 12. One side surface of the frame 12 in the front-rear direction is closed by a front plate 13, and the other side surface is closed by a rear plate 14.

A pair of lower connecting members 15 are attached to both end portions in the width direction of the lower end portion of the front plate 13. Like the front connector 8, the lower connector 15 has an attachment hole 15a on one side and a pair of locking holes 15b on the other side, similar to the front connector 8.

Further, the front plate 13 of the back member 11 is divided at an intermediate portion in the vertical direction, and its upper end is formed as an opening / closing portion 17 rotatably connected by a hinge 16 as shown in FIG. One side of an upper connecting member 18 made of an angle member is fixed to both sides of the frame body 12 corresponding to the midway portion of the opening / closing portion 17 in the vertical direction. A through hole 19 is formed on the other side of the upper connecting tool 18. Hinge 16
For this, a synthetic resin sheet such as a hinge or polypropylene is used. The point is that the opening / closing plate 17 can be rotatably connected.

Further, at the lower end of the front plate 13 and above the lower connector 15, a rear receiving bar 21 is attached in the horizontal direction over the entire length in the width direction. The back member 11 is covered with the exterior material 20 on the surface of the opening / closing part 17 of the front plate 13, the upper part thereof and the rear plate 14 as shown in FIG.

In the back member 11 having the above structure, the locking holes 15b of the pair of second lower connecting members 15 are engaged with the pair of pins 4b of the rear receiving member 4, and the through holes 1 of the upper connecting member 18 are formed.
Insert the headed tightening bolt 22 into the
By being screwed into the nut 10 embedded in the side member 1, the pair of side members 1 are detachably attached.

When the back member 11 is mounted, the opening / closing portion 17 formed on the front plate 13 is opened. As a result, the portion of the back member 11 corresponding to the upper connecting member 18 is opened, so that when the tightening work of the tightening bolt 22 is performed, the work space thereof is expanded without being limited by the front plate 13. Therefore, the work becomes easy.

If the open state of the opening / closing part 17 is released after the tightening bolts 22 are tightened, the lower end of the inner surface of the opening / closing part 17 abuts on the support shaft 6 projecting from the inner surface of the pair of side members 1. The lower end 17 is held at a predetermined inclination angle with its lower end positioned forward. As a result, since the upper connecting member 18 is located on the inner surface side of the opening / closing portion 17, it does not project to the front surface side of the back member 11 and is concealed by the opening / closing portion 17.

When the back member 11 is attached, the rear receiving bar 21 provided on the lower end of the front surface thereof and the front receiving bar 9 provided on the inner surface of the front member 13 have substantially the same height. A floor member 25 is detachably installed on the receiving bars 9 and 21 by engaging the front end side and the rear end side.

As shown in FIG. 1, the floor member 25 includes a frame member 26, an elastic band 27 laid on the upper surface of the frame member 26 in a lattice pattern, and an exterior material 27a covering the frame member 26. Are formed from. Then, the floor member 25
A seat cushion 28 is placed on the upper portion, and a back cushion 29 is attached to the back member 11 to form an assembled chair.

According to the assembled chair having such a structure, the back member 11 is connected to the side member 1 by connecting the lower connecting member 15 provided at the lower end to the rear receiving member 4 and connecting the upper member to the upper member. The upper connecting member 18 provided at the side is connected to the side member 1 via the tightening bolt 22.

Therefore, when the user sits on the seat cushion 28 and leans against the back cushion 29, the load applied to the back member 11 is distributed to the lower connecting member 15 and the upper connecting member 18, and the load is reduced to the conventional value. Since the back member 11 is not concentrated only on the lower portion unlike the assembly type chair, the assembled state of the back member 11 is reliably maintained and the back member 11 is less likely to be damaged.

When assembling the back member 11, the work of connecting the upper connecting member 18 to the side member 1 by the tightening bolts 22 can be performed by opening the opening / closing portion 17 of the back member 11.
That is, the portion of the back member 11 corresponding to the upper connecting member 18 is opened. Therefore, since the hand holding the head of the tightening bolt 22 does not hit the front plate 13, the work is facilitated.

An opening / closing portion 17 of the front plate 13 of the back member 11
Is held by the support shaft 6 while being inclined at a predetermined rotation angle, and the upper connecting member 18 is located on the back surface side of the inclined opening / closing portion 17. Therefore, since the upper connecting member 18 does not project to the front surface side of the back member 11, not only does it have a good appearance, but also the back cushion 29 is not damaged. Further, since the back cushion 29 is held in an inclined state according to the inclination angle of the opening / closing portion 17, the user sitting on the seat cushion 28 may easily lean on it.

Next, second to seventh embodiments of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
FIG. 5 shows a second embodiment of the present invention. This embodiment differs from the first embodiment in the means for holding the opening / closing part 17 at a predetermined rotation angle. That is, the front surface of the frame 12 of the back member 11 corresponds to the lower end portion of the opening / closing portion 17, and the upper coupling 1
8, a supporting member 31 having a size higher than that of the upper connecting member 18 is provided over the entire length in the width direction, and the inner surface of the lower end portion of the opening / closing portion 17 is brought into contact with the supporting member 31 so that the opening / closing portion 17 is opened. Can be held at a predetermined inclination angle.

FIG. 6 shows a third embodiment of the present invention. In the case of this embodiment, a supporting portion 32 is provided at the lower end portion of the opening / closing portion 17 in an L-shape over the entire length in the width direction, and the tip of this supporting portion 32 is provided. By contacting the front plate 13, the opening / closing part 17 can be held at a predetermined angle.

FIGS. 7A and 7B show a fourth embodiment of the present invention. In this embodiment, the upper surface of the frame member 12A of the back member 11 is inclined rearward as the upper portion of the frame member 12A is inclined upward 33.
The frame 12 is formed on the slope 33.
An opening / closing portion 17A having a width substantially equal to that of A is rotatably connected at its upper end. Therefore, the opening / closing part 17A contacts the slope 33 and is held in an inclined state.

A through hole 34 for inserting the tightening bolt 22 is formed in an upper portion of the side of the frame 12A, and the nut 10 is embedded in a portion of the side member 1 corresponding to the through hole 34. There is.

Therefore, the back member 11 has the lower connecting member 15
The lower end is connected and fixed to the side member 1, and the upper part is connected and fixed by the tightening bolt 22. That is, since the back member 11 is connected and fixed not only to the lower portion but also to the upper portion to the side member 1 as in the first embodiment, it can be assembled with sufficient strength.

Further, according to this embodiment, the tightening bolt 22 is used without using the upper connecting member 18 shown in the first embodiment.
Since the back member 11 can be connected and fixed to the side member 1 only, the number of parts is small, and moreover, the tightening bolts 22 enter the inside of the back member 11 and are not exposed to the outside at all.
Combined with the absence of the upper connecting member 18, the appearance can be improved.

FIGS. 8A and 8B show the fifth embodiment of the present invention. In this embodiment, the front end sides of the pair of side members 1 are connected by a storage box 35 instead of the front member 7 of the first embodiment. That is, storage box 3
Reference numeral 5 denotes an outer box 36 and a drawer 37 that is accommodated in the front side of the outer box 36 so that the drawer 37 can be taken in and out freely. The front connecting device has a channel shape on both outer surfaces on the front end side of the outer box 36. 8A is fixed. The front connecting member 8A is provided with a pair of taper-shaped locking holes 8b that engage with the pins 3a of the front receiving member 3.

Further, the seat cushion 28 is placed on the upper surface of the outer box 36. That is, in this embodiment, the upper surface of the outer box 36 forms the floor member in the first embodiment.

FIG. 9 shows a sixth embodiment of the present invention. This embodiment is a modification of the floor member, and a cushion body 41 as a floor member is provided between the pair of side members 1. The cushion body 41 has a bottom plate 43 provided with a pair of legs 42 at both ends of the rear lower surface. A spring unit 44 is provided on the upper surface of the bottom plate 43, and a thin sheet-like cushion material 45 is laminated on the upper surface of the spring unit 44. The upper surface of the cushion material 45 and the outer peripheral surface of the spring unit 44 are covered with an exterior material 46, and the peripheral portion of the exterior material 46 is fixed to the bottom plate 43. Then, the seat cushion 28 is placed on the cushion body 41.

A front connecting member 8 (not shown) is provided on both sides of the front end of the bottom plate 43, and the front connecting member 8 is a front receiving member provided at the front end of the inner surface of the side member 1. 3 is detachably engaged. Thereby, the cushion body 41 is held between the pair of side members 1.

FIG. 10 shows a seventh embodiment of the present invention.
In this embodiment, like the first embodiment, the opening / closing part 17 is held by the support shaft 6 at a predetermined rotation angle, and the upper portion of the back member 11 is shown in FIGS. 7 (a) and 7 (b). 4th shown in
Similar to the embodiment described above, a through hole 34 is formed in the side of the frame body 12, and the tightening bolt 22 (not shown) is inserted through the through hole 34.
It is adapted to be attached and fixed to the side member 1.

[0040]

As described above, according to the present invention, not only the lower portion of the back member but also the upper portion is connected to the side member. Therefore, the load when the user leans against the lower member is lower than in the conventional case. Since it is not concentrated only in the above, but is dispersed in the upper part, the connected state of the back member and the side member is less likely to be impaired.

Further, the upper portion of the front plate of the back member is formed as an openable / closable portion. Therefore, when the upper part of the back member is connected to the side member, the connecting operation can be performed by opening the opening / closing portion, which may be easier.

Further, the opening / closing portion has an upper connecting member for connecting the upper portion of the back member to the side member on the inner surface side thereof.
Since it is held at a predetermined rotation angle, the upper connecting means does not project to the front side of the opening / closing section. Therefore, there are advantages that the upper connecting means is not exposed to the outside and the appearance is deteriorated, and the cushion attached to the front surface of the back member is not damaged.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a prefabricated chair showing a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view taken along the front-rear direction showing the assembled state.

FIG. 3 is a sectional view showing the upper portion of the back member.

FIG. 4A is a perspective view of a receiving tool, FIG. 4B is a perspective view of a connecting tool, and FIG. 4C is a front view of the entire configuration in which the exterior material is removed from the back member.

FIG. 5 is a longitudinal sectional view taken along the front-rear direction showing a second embodiment of the present invention.

FIG. 6 is a longitudinal sectional view taken along the front-rear direction showing a third embodiment of the present invention.

FIG. 7 (a) is a side view showing a fourth embodiment of the present invention with one side member removed, and FIG. 7 (b) is a front view of the entire structure in which the exterior material is also removed from the back member.

8A is a longitudinal sectional view taken along the front-rear direction showing a fifth embodiment of the present invention, and FIG. 8B is an exploded perspective view of the same.

FIG. 9 is a longitudinal sectional view taken along the front-rear direction showing a sixth embodiment of the present invention.

FIG. 10 is a longitudinal sectional view taken along the front-rear direction showing a seventh embodiment of the present invention.

[Explanation of symbols]

1 ... Side member, 4 ... Rear receiving member (lower connecting means), 6 ... Support shaft (holding means), 7 ... Front member (connecting member), 8 ... Lower connecting tool (lower connecting means), 11 ... Back member, 13 ... Front plate, 15 ... Upper connecting tool (upper connecting means), 17 ... Opening / closing part, 22 ... Tightening bolt (upper connecting means), 25 ... Floor member.

Claims (1)

[Claims] 1. A pair of side members, a connecting member for connecting front end sides of these side members at a predetermined interval, and a front plate, which is provided in a standing state on a rear end side of the side member and the front plate. An upper part of the back member formed in an opening / closing part that can be opened and closed with the upper end as a fulcrum, a lower connecting means for connecting the lower part of the back member to the side member, and an upper part of the back member corresponding to the opening / closing part. An upper connecting means for connecting to the side member, a holding means for holding the opening / closing part of the back member at a predetermined rotation angle on the inner surface side of which the upper connecting means is located, and a floor provided between the pair of side members. A prefabricated chair comprising: a member.