JP2008043581A - Chair with height-adjustable seating face - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair with a height-adjusting structure capable of easily changing the height of the seating face and storing a height-adjusting member in such a state as not to be lost. <P>SOLUTION: The chair comprises the seating face 5 and a leg member 1 on which the seating face 5 is separably mounted. At least one spacer 14 is fixed to the leg member 1 together with the seating face 5 by putting the spacer 14 between the separated seating face 5 and the leg member 1 or by holding the spacer 14 to the leg member 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a chair capable of adjusting the height of a seating surface so as to be adapted to the size of a person sitting by a very simple mechanism and structure.

  A chair that makes it possible to adjust the height of the seating surface is already provided in, for example, a piano chair, and is well known. However, this chair requires a metal link mechanism, screw type lift, etc., so that the structure is complicated and the cost is high, and the overall weight of the chair becomes bulky. It is unsuitable to be applied to a chair for use.

  In view of these points, Patent Documents 1 and 2 propose a chair that can adjust the height of the seating surface without using a metal mechanism.

The chair of the above-mentioned document 1 is inverted on the top and bottom of the frame by attaching two seating surfaces at different distances from the top and bottom of the frame to a chair frame that can be used upside down. In other words, the chair can be used as a chair with different heights when the height is high and low.
This chair has the disadvantages that it requires two seating surfaces, has a complicated structure and is heavy in weight, and has a low degree of freedom in the design of the frame form.

  On the other hand, although the chair of patent document 2 is a stool type chair, the leg arrange | positioned under a seat surface is formed by a block pile-up type (or lamination type of a block-shaped leg member), and the number of blocks piled up. The height of the seating surface is adjusted by increasing or decreasing.

  This chair can eliminate the difficulty of the chair of Patent Document 1 in that the height of the seating surface can be adjusted by the number of stacked blocks, but when a block that is not used for the leg occurs, where is it stored? Issues such as whether to leave are left.

That is, since the storage location of unused leg blocks has not been determined, there is a problem in that the blocks are likely to be easily lost and lost. In addition, this seat is structured to be supported by three stacked leg blocks. However, it is necessary to increase or decrease the leg blocks for height adjustment for each leg, which requires a lot of trouble. is there. Further, since this chair has a structure in which the legs supporting the seating surface are only the leg blocks, there is no problem with the vertical load, but there is a problem in the load resistance when receiving a lateral load.
Japanese Utility Model Publication No. 6-5549 JP 7-265178 A

  Therefore, the present invention provides a chair provided with a height adjustment structure that can easily change the height of the seating surface with a very simple structure and that can store the height adjustment member without losing the height adjustment member. The task is to do.

  The structure of the chair of the present invention made for the purpose of solving the above problem is to separate at least one spacer in a chair provided with a seat member and a leg member mounted and fixed so that the seat surface can be separated. The spacer is fixed to the leg member together with the seating surface by being held between the seating surface and the leg member or held by the leg member.

  In the chair of the present invention, the seat surface in the above configuration may include a backrest or a backrest and an armrest. Also, the seat surface is formed from a seat frame and a cushion material placed on the frame and a skin material (sitting surface) that covers the cushion material, or a cushion material that also serves as the skin material (sitting surface). The present invention can be applied even to a seat mounted on the seat or a seat surface formed so that the seat frame also serves as a seating surface.

  The seating surface and the leg member in the present invention are fixed by tightening a bolt, which is passed through the leg member frame and the seating surface frame, to the nut.

  Further, the spacer to be sandwiched between the seat surface and the leg member in the present invention can be held by the bolt rod and nut so as not to be lost. The present invention chair is most suitable when applied to a wooden chair, but is not limited to a wooden chair, and is also applied to a chair made of metal or plastic, or a chair using these materials in combination. be able to.

  According to the present invention, in a chair including a seat member and a leg member mounted and fixed so that the seat surface can be separated, at least one spacer is sandwiched between the separated seat surface and the leg member, or Since the chair is made to be able to adjust the height of the seating surface by holding the leg member and fixing the spacer together with the seating surface to the leg member, the height of the seating surface is easily changed. And the height adjusting spacer is not lost.

Next, embodiments of the present invention will be described with reference to the drawings.
1 is a longitudinal side view of an example of the chair of the present invention, FIG. 2 is a plan view of the front side (lower half side of FIG. 2) of the chair of FIG. 1 viewed from the bottom, and FIG. 3 is the right half side of the chair of FIG. 4 is a plan view of an example of a seat frame, FIG. 5 is a plan view of an example of a frame, FIG. 6 is a plan view of an example of a spacer, and FIG. It is A arrow sectional drawing.

  1 to 3, reference numeral 1 denotes a leg member. In the illustrated example, a leg frame 2 having a substantially rectangular plane, four leg bodies 3 extending so as to expand downward from substantially four corners of the leg frame 2, and a leg frame 2 is provided with two subframes 4 installed in the front-rear direction (left-right direction in FIG. 1). Reference numerals 2a and 2b denote front and rear frame members in the frame frame 2, and reference numerals 2c denote reinforcing frames disposed at the four corners of the frame frame 2.

1 to 3, reference numeral 5 denotes a seating surface. In the illustrated example, the seating surface frame 6 having a generally square shape or a substantially square shape when viewed from above, and a cushion material provided on the seating surface frame 6 are provided. 7 and a skin material 8 serving as a seating surface covering and covering the cushion material 7.
In order to support the cushion material 7, a tape-like support member 7 a is stretched in a cross shape at the opening of the seat frame 6. The seat frame 6 has a size and shape that can be mounted on the frame frame 2.

  The seat surface 5 is provided with elbow frames 9 and 10 that are substantially in the shape of a letter when viewed from the side surface for armrests on the left and right sides of the frame 6. Both elbow frames 9 and 10 are provided with elbow pads 9a and 10a as upper members, and a backrest 11 is sandwiched between the rear portions of both frames 9 and 10.

  In the above-described component of the chair of the present invention, the leg member 1 and the seat surface 5 penetrate through four portions where the sub frame 4 and the seat frame 6 overlap in each leg frame 2 illustrated in FIGS. Bolt holes 4a and 6a are provided, and bolts 12 are inserted into the four through-hole bolt holes 4a and 6a from the lower surface side of the hole 4a on the subframe 4 side, and the nut 13 disposed in the bolt hole 6a on the seat frame 6 side. The leg frame 2 and the seating surface frame 6 are combined and integrated to form a chair having a standard height seating surface 5 by screwing the bolt 12 and tightening the nut 13 and tightening. Incidentally, 12a is a knob of the bolt 12.

  In the present invention, in the chair of the seat surface 5 having the above standard height, the chair is provided with the following configuration so that the height of the seat surface 5 can be freely adjusted. Explained.

  In the present invention, in order to adjust the height of the seating surface 5, at least one spacer 14 having the structure shown in FIGS. 6 and 7 is provided between the leg member 1 on which the seating surface 5 is placed and fixed. A sheet was inserted so that the height of the seating surface 5 could be increased by the thickness of the spacer 14. FIG. 1 shows an example in which two spacers 14 are arranged.

  That is, the spacer 14 is clamped and fixed between the seat surface 5 and the leg member 1 by the bolt 12 and, when not used as a spacer, is fastened and held on the lower surface of the subframe 4 in the leg member 1 by the bolt 12. In order to prevent loss.

  The spacer 14 is slightly longer than the front-rear width (length, left-right direction in FIGS. 1 and 2) of the frame frame 2, and is sufficiently larger than the lower width (see FIG. 2) when viewed from the plane of the subframe 4. Bolt holes 14b and 14b through which the bolt 12 passes are provided in symmetrical portions of the front and rear portions of the plate-shaped main member 14a having a large width, while the dowels 14c are provided on the front and back surfaces of the outer portions close to the bolt holes 14b. The dowel holes 14d are provided symmetrically with respect to the vertical width of the plate-like main material 14a. Note that the dowels 14c and dowel holes 14d on the left and right sides of the plate-shaped main material 14a are provided in a symmetrical positional relationship with respect to the midpoint of the main material 14a.

  Due to the above-described configuration of the spacers 14, the dowels 14c and the dowel holes 14d are in a relationship in which the dowels 14c and dowel holes 14d can be fitted to each other in the upper and lower sides of the overlapped state. However, when laminated, the thickness of the plate-like main body 14a is only the thickness of the laminated body, and in this laminated state, the bolt holes 14b of the spacers 14 coincide and penetrate the entire laminated body. .

  On the other hand, the front and rear frame members 2a and 2b in the leg frame 2 sandwiching the spacer 14 are provided with dowels 14c and dowel holes 14f that match the dowels 14c and dowel holes 14d of the pacer 14, and the seat frame Dowel holes 14f are provided in the front and rear frame members 6c and 6d in FIG. The dowels 14e and dowel holes 14f of the frame members 2a and 2b are divided into upper and lower surfaces of the members 2a and 2b. In the example of FIG. 5, dowels 14e are provided on the upper surface and dowel holes 14f are provided on the lower surface. Yes.

  In order to arrange the spacer 14 between the sub-frame 4 in the leg frame 2 and the upper surfaces of the front and rear frame members 2a and 2b and the front and rear frame members 6c and 6d in the seat frame 6, the following procedure is performed. First, the dowels 14c and dowel holes 14d before and after the spacer 14 face downward, and the dowel holes 14d located on the left side of the lower surface of the spacer 14 are formed on the dowels 14e on the left side (see FIG. 5) of the front frame member 2a of the leg frame 2. At the same time, the dowel hole 14d located on the right side of the lower surface of the spacer 14 is arranged in accordance with the dowel 14e on the right side (see FIG. 5) of the rear frame member 2b of the leg frame 2. The spacers 14 are arranged on the two subframes 4 of the leg frame 2.

  When the two spacers 14 are positioned and arranged on the front and rear frame members 2a and 2b of the leg frame 2 as described above, the front and rear in the seat frame 6 with respect to the front and rear dowels 14c and 14c on the upper surface of the spacer 14 are arranged. The seat frame 6 is positioned with respect to the leg frame 2 through the two spacers 14 by fitting dowel holes 14f provided in the frame members 6c and 6d.

  The above-mentioned spacer 14, the leg frame 2 in the leg member 1 through the spacer 14, and the seating surface frame 6 of the seating surface 5 have respective bolt holes 4a, 14b, 6a provided on each member coaxially. Since it is penetrated, the bolt 12 is inserted into the holes 4a, 14b, 6a from the lowest bolt hole 4a, and the bolt 12 is screwed into the embedded nut 13 provided in the bolt hole 6a and tightened. To do. In the illustrated example, the leg member 1 and the seat surface 5 are tightly coupled by four bolts and nuts via a spacer 14.

  When the spacer 14 is interposed, at least one spacer 14 may be provided. The number of spacers 14 used depends on the individual thickness of each spacer 14, but about 3 to 4 spacers are used if the heat is about 20 mm. As a result, the height of the seating surface on the seat surface 5 can be adjusted from 60 to 80 mm at a pitch of 20 mm from the lowest position where the spacer 14 is not used at all. The inserted spacer 14 is integrally coupled to the frame of the seating surface and the leg member by the bolt 12 that couples the seating surface 5 and the leg member 1, so that the structure and strength as a chair are not what. Not damaged.

Next, the case where the spacer 14 mounted as described above is removed and stored will be described.
First, the bolt 12 which is tightly coupled between the leg member 1 and the seat surface 5 via a spacer 14 between them is loosened. The loosening operation of the bolt 12 is performed by grasping the knob 12a as in the tightening operation and rotating the knob 12a in the direction opposite to that at the time of tightening.

  If the bolt 12 is loosened and comes off the nut 13, the bolt 12 is removed. By removing each bolt 12, the seat surface 5, the leg member 1, and the spacer 14 are in a state where the respective dowels are in the dowel holes. Therefore, the seat surface 5 is lifted and each spacer 14 is moved to the frame of the leg member 1. Remove from 2.

  With the spacers 14 removed, the seat surface 5 is placed on the leg frame 2. At the time of placement, the dowel holes 14 f of the front and rear frame members 6 b and 6 c in the seat frame 6 are inserted into the leg members 1. Positioning the seating surface 5 with respect to the leg frame 2 is performed by inserting the dowels 14e so as to protrude from the upper surfaces of the front and rear frame members 2a and 2b in the frame 2.

  Next, the removed spacer 14 is inserted into the dowel hole 14f on the lower surface of the front and rear frame members 2a and 2b while the dowel 14c on the upper surface is applied to the subframe 4 in the leg frame 2, and the next spacer 14 is inserted into this spacer 14 Two or more spacers 14 are stacked such that they are stacked. In the lamination of the spacers 14, the dowels 14 c are positioned on the upper surfaces of the spacers 14, and the lower surfaces overlap in a flat (nothing) direction. In the stacked spacer 14, the bolt holes 14b are aligned and penetrated. Further, since the bolt hole 14b of the spacer 14 laminated on the lower surface of the subframe 4 and the bolt hole 14b of the subframe 4 are also aligned and penetrated, the bolt 12 is removed from the bolt hole 14b of the spacer 14 positioned at the bottom. insert.

  The bolt 12 to be inserted passes through the bolt hole 4a of the subframe 4 and enters the bolt hole 6a of the front and rear frame members 6c and 6d in the seating surface 5. Therefore, when the bolt 12 is tightened, the bolt 12 is screwed into the nut 13, and the spacer 14 and the subframe 4 are tightly coupled to the front and rear frame members 6 b and 6 c of the seat surface frame 6 together. As a result, the unused spacers 14 are fixed to the lower surface of the subframe 4 in the leg frame 2 by the bolts 12, so that there is no risk of loss.

  In the above description, the sub-frame 4 in the leg frame 2 is provided along the front-rear direction of the seating surface 5, and thus the spacer 14 has been described as an example of being stacked and disposed along the sub-frame 4. The subframe 4 of the leg frame 2 to which the present invention can be applied may be one (not shown) provided along the left-right direction of the seating surface 5. In this case, the spacers 14 are stacked along the subframe 4 provided in the left-right direction.

  In the present invention, the spacers 14 can be disposed on the reinforcing frames 2c at the four corners of the leg frame 2. In this case, the spacer 14 is arranged in such a manner that both end portions of the spacer 14 are mounted on the reinforcing frames 2c and 2c positioned on the front and rear sides of the leg frame 2 or the reinforcing frames 2c and 2c positioned on the left and right. Become. Further, in this case, the positioning dowels and dowel holes and the tightening positions of the bolts may be set to portions where there is a space where these can be provided.

  The present invention is as described above, and at least one spacer is sandwiched between a separated seating surface and a leg member, or held by the leg member, and the spacer is joined to the leg member together with the seating surface. Since the height of the seating surface can be adjusted by fixing to the height of the seating surface, the height of the seating surface can be easily changed by a very simple structure, and the height adjusting member is not lost. Can be stored in a state.

The vertical side view of an example of this invention chair. The top view which represented the near side (lower half side of FIG. 2) with the figure of the bottom face in the chair of FIG. The front view which represented the right half side of the chair of FIG. 1 with the figure of the back. The top view of an example of a seat surface frame. The top view of an example of a leg frame. The top view of an example of a spacer. AA arrow sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Leg member 2 Leg frame 3 Leg body 4 Sub frame 5 Seat surface 6 Seat surface frame 7 Cushion material 7a Tape-like support member 8 Skin material 9, 10 Elbow frame
9a, 10a Elbow pad 11 Backrest 12 Bolt 13 Nut 14 Spacer
14a Main plate material
14b Bolt hole
14c, 14e dowels
14d, 14f Dowel hole

Claims (4)

  In a chair comprising a seat member and a leg member mounted and fixed so that the seat surface can be separated, at least one spacer is sandwiched between the separated seat surface and the leg member, or the leg member The chair is adjustable in height of the seating surface, and the spacer is fixed to the leg member together with the seating surface.   2. The chair according to claim 1, wherein the seating surface includes a backrest or a backrest and an armrest. The seat surface is formed from a seat frame, a cushion material placed on the frame, and a skin material (sitting surface) that covers the cushion material, or a cushion material that also serves as the skin material (sitting surface) is placed on the seat frame. 3. A chair with adjustable seating height according to claim 1 or 2, wherein the seat frame is formed so that it also serves as a seating surface. The seat surface and the leg member are fixed by tightening bolts that pass through the frame of the leg member and the frame of the seat surface to the nut, and the height of the seat surface can be adjusted freely. Chairs.

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