JP3673214B2 - Chair - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair, for example, a chair suitable for use as a child chair used with a learning desk.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a chair that can adjust the height of a seating surface as a child grows is known as a child chair used with a learning desk.
[0003]
However, this type of chair can only adjust the height of the seating surface and cannot adjust the height of the backrest or the depth of the seating surface, so the seating comfort gradually increases as the seating surface height is changed. It has the disadvantage that it may deteriorate.
[0004]
[Problems to be solved by the invention]
In view of the above, the present invention can adjust not only the height of the seating surface but also the height of the backrest, the depth of the seating surface, etc. The purpose is to provide a good chair.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a chair according to claim 1 of the present invention is a chair having legs, a seating surface and a backrest, the height of the seating surface and the backrest being adjustable, and the seating The front-rear position of the surface can be adjusted , and the front-rear position of the seat surface is adjusted by changing the direction of the seat surface in the front-rear direction and fixing it .
[0008]
The chair according to claim 2 of the present invention is the chair according to claim 1 described above, wherein the seat surface is detachably supported on the seat through in the seat with respect to the adjustment of the longitudinal position of the seat surface. Two penetrating portions are provided, the two penetrating portions are arranged in the front-rear direction of the seat surface, and first to fourth female screws are provided on the lower surface of the seat surface, and the first to fourth female screws are provided. Are arranged in the front-rear direction of the seating surface, the distance between the two through portions is a, the distance from one end of the seating surface in the front-rear direction to the first female screw is b, and one end of the seating surface in the front-rear direction C is the distance from the second female screw to the second female screw, d is the distance from the other end of the seat surface to the third female screw, and d is the distance from the other end of the seat surface to the fourth female screw. Where e is the distance between and the distance between the second and third female threads is f.
c>b>d> e
And (c−b) + f = (d−e) + f = a
It is characterized by satisfying the relationship.
[0011]
In the chair according to claim 1 of the present invention having the above-described configuration, the height position of the seat surface and the backrest can be adjusted and the front and rear positions of the seat surface can be adjusted in the chair including the leg portion, the seat surface, and the backrest. Since it is adjustable, not only the height position of the seating surface but also the height position of the backrest and the depth of the seating surface can be adjusted according to the growth of the child. Regarding the adjustment of the front and rear position of the seat surface, as will be described later, a through portion that penetrates the seat surface that detachably supports the seat surface is provided in the vertical direction, and a plurality of female screws are provided on the lower surface of the seat surface in the front and rear direction of the seat surface. It is preferable to specify the front and rear position of the seating surface by inserting the male screw into the penetration part and screwing it into one female screw. According to this adjusting means, the front and rear position of the seating surface is determined. It becomes possible to adjust in steps according to the number of female screws provided on the lower surface of the.
[0013]
In addition, since the adjustment of the front / rear position of the seating surface is performed by changing the direction of the seating surface in the front / rear direction, the number of fastening means such as penetrating parts and female screws is small. However, it is possible to set a large number of adjustment steps for the front and rear positions of the seating surface. For example, as described in claim 2 , with respect to the adjustment of the front and rear position of the seating surface, Are arranged side by side in the front-rear direction of the seating surface, and the first to fourth female screws are arranged in the front-rear direction of the seating surface on the lower surface of the seating surface, the distance between the two through portions is a, and the front-rear direction of the seating surface The distance from one end to the first female screw is b, the distance from one end of the seat surface to the second female screw is c, and the distance from the other end of the seat surface to the third The distance to the female screw is d, the distance from the other end of the seat surface in the front-rear direction to the fourth female screw is e, and the second The distance between the beauty third female thread as f,
c>b>d> e
And (c−b) + f = (d−e) + f = a
In order to satisfy the above relationship, the front and rear positions of the seating surface can be adjusted in four stages simply by providing two through parts in the seating and four female screws on the seating surface.
[0014]
In addition, the chair of the present invention is a child used together with a learning desk to adjust not only the height of the seating surface but also the height of the backrest and the depth of the seating surface as the child grows as described above. It is preferable to use it as a chair . In addition, if a recess for inserting and storing a hexagon wrench that is used to adjust the height position and front / rear position of the seating surface is provided in a part that is difficult to see from the outside, such as the inner surface of the seating, the hexagonal infrequently used It becomes possible to prevent the wrench from being lost.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0016]
1 is a plan view of a chair according to an embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. 4 is a perspective view.
[0017]
The chair 1 according to this embodiment is used as a chair for children used together with a learning desk. As shown in FIGS. 3A to 3D, a seat surface (also referred to as a seat plate) 21 is used. The height position (vertical direction position) of the seat portion 11 and the backrest (also referred to as the back portion) 12 can be adjusted in four steps up and down, and the front-rear position (front-rear position) of the seat surface 21 in the seat portion 11 (Direction position) can be adjusted in four stages. In FIG. 3, (A) on the left side of the figure is set such that the height of the seat portion 11 and the backrest 12 is the highest, and the front and rear positions of the seat surface 21 are located in the foremost position and the depth of the seat surface 21 is set to the deepest. In the following (B), (C) and (D), the height of the seat portion 11 and the backrest 12 is gradually lowered, and the front and rear positions of the seat surface 21 are gradually lowered to the back. The depth of 21 has been changed so as to become gradually shallower. In order to adjust the height position of the seat portion 11 and the backrest 12 and the front-rear position of the seating surface 21 in accordance with the growth of the child, contrary to the above description, from FIG. 3 (D) to (C) (B) and Adjustment work is performed to (A). 4A is a perspective view corresponding to FIG. 3A, and FIG. 4B is a perspective view corresponding to FIG. 3D.
[0018]
The chair 1 includes a leg portion 2, a seat portion 11, and a backrest 12 as main components, and each portion is configured as follows. As described above, the seat surface 21 is a part of the seat portion 11.
[0019]
That is, first, the leg portion 2 includes a pair of left and right legs 3 and 3, and each leg 3 is formed by a combination of a front leg 4 and a rear leg 5 that are fixedly connected to each other. As shown in the side view of FIG. 3, the upper portion of the front leg 4 is curved rearward and is disposed above the seat surface 21 so as to serve as the armrest 6. A leg-side through 7 is fixed between the front leg 4 and the rear leg 5, and a front leg 8 is fixed between the left and right front legs 4, 4. A leg penetration 9 is fixed between them.
[0020]
The seat portion 11 and the backrest 12 are formed integrally with each other, and are provided with a pair of left and right seat sides 13, 13. The seat side 13 is fixedly connected to the lower seat side (the seat side lower side). 14) and an upper seat side (also referred to as a seat side) 15 are formed. The lower seat side 14 constitutes a part of the seat portion 11, and the upper seat side 15 constitutes a part of the backrest 12. The seat sides 13 are respectively disposed immediately inside the legs 3 and are detachably connected to the legs 3 by connecting means described later. Between the left and right lower seat sides 14 and 14, a front seat runner 16 and a rear seat runner 17 (see FIG. 7A) are fixedly installed, and between the left and right upper seat sides 15 and 15 are fixed. A lower back-through 18, a central back-through 19 and an upper back-through 20 are fixedly installed, and a seat surface 21 is detachably mounted on the front seat-through 16 and the lower seat-through 17 by connecting means described later. It is put on.
[0021]
A seat portion 11 comprising a lower seat side 14, a front seat bore 16, a rear seat bore 17 and a seat surface 21, and a backrest 12 comprising an upper seat side 15, a lower back bore 18, a central back bore 19 and an upper back bore 20. Are connected to the leg 2 by the following connecting means. Since this connecting means has a symmetrical structure, only one of them will be described.
[0022]
That is, first, as shown in the exploded perspective view of FIG. 5, a hole-like through portion 31 is provided in the lower seat side 14 of the seat portion 11 so as to penetrate in the left-right direction and correspondingly in the leg portion 2. A female screw 32 is provided on the inner surface of the front leg 4, and the lower seat side 14 is detachably connected to the front leg 4 by inserting a male screw 33 through the penetration part 31 and screwing into the female screw 32. Further, as shown in the exploded perspective view of FIG. 6, a hole-like through portion 34 is provided on the upper seat side 15 of the seat portion 11 so as to penetrate in the left-right direction, and a female screw is formed on the inner surface of the front leg 4 correspondingly. 35 is provided, and the upper seat side 15 is detachably connected to the front leg 4 by inserting the male screw 36 through the penetrating portion 34 and screwing into the female screw 35. Therefore, the seat part 11 and the backrest 12 are detachably connected to the leg part 2 by four screws on each of the left and right sides.
[0023]
Further, as shown in FIG. 5, four female screws 32 provided on the inner surface of the front leg 4 are provided, and these four female screws 32 are provided side by side with a predetermined interval (for example, 45 mm) in the vertical direction. ing. Further, as shown in FIG. 6, four hole-like through portions 34 provided on the upper seat side 15 are also provided, and these four through portions 34 have the same interval (for example, 45 mm) as the case of the female screw 32. ) Are provided side by side in the vertical direction. Therefore, when performing the above connecting operation, if male screws 33 and 36 are used for the uppermost female screw 32 and penetrating portion 34, the seat portion as shown in FIGS. 3 (A) and 4 (A). 11 and the backrest 12 are set to the highest position, and on the contrary, when the male screws 33 and 36 are used for the lowermost female screw 32 and the penetrating portion 34, FIG. 3 (D) and FIG. 4 (B). Thus, the height positions of the seat portion 11 and the backrest 12 are set to the lowest, and according to the connecting means, the height positions of the seat portion 11 and the backrest portion 12 are set to the female screw. 32 and the number of holes 34 can be adjusted in a stepwise manner. Accordingly, the height position of the seating surface 21 can also be adjusted within a predetermined height range (for example, 285 to 420 mm). Step by step with the number of formations It is possible to adjust. In addition, the penetration part 31 provided in the lower seat side 14 is a long hole long in the front-rear direction as shown in FIG. 5 so as to absorb a dimensional difference between the female screw 32 and the penetration part 34 in each step. ing.
[0024]
Moreover, in the seat part 11, the seat surface 21 is connected with the front side through hole 16 and the rear side through hole 17 by the following connection means.
[0025]
That is, FIG. 7 shows a state in which the seat surface 21 is removed from the chair 1, (A) shows a plan view of a portion other than the seat surface 21, and (B) shows a plan view of the seat surface 21.
[0026]
First, as shown in FIG. 3A, a hole-shaped through portion 37 is formed so as to penetrate in the vertical direction at the center in the left-right direction of the front side penetration 16 and at the center in the left-right direction of the rear side penetration 17. The hole-shaped through portion 38 is formed so as to penetrate in the vertical direction, and further, as shown in FIG. First, second, third, and fourth female screws 39, 40, 41, 42 are provided in a row in the direction other end 21b. The female screws 39, 40, 41, and 42 are provided on the lower surface of the seating surface 21, respectively, but are illustrated on a plane for convenience of drawing. Then, a male screw (not shown) similar to the male screws 33 and 36 is inserted into the penetrating portion 37 from below and screwed into the first female screw 39, and another male screw (not shown) is inserted into the penetrating portion 38 from below. Or a male screw (not shown) similar to the male screws 33 and 36 is inserted into the through-hole 37 from below and screwed into the second female screw 40. The seat surface 21 is detachably fixed to the front seat runner 16 and the rear seat runner 17 by inserting a male screw that is not inserted into the through portion 38 from below and screwing it into the fourth female screw 42.
[0027]
Further, in the above configuration, the dimensions of each part are as follows: the distance between the through parts 37 and 38 provided in the front side through hole 16 and the rear side through hole 17 is a, and from the one end 21a of the seat surface 21 to the first female screw 39. , B is the distance from one end 21a of the seating surface 21 to the second female screw 40, d is the distance from the other end 21b of the seating surface 21 to the third female screw 41, and The distance from the other end 21b to the fourth female screw 42 is e, and the distance between the second and third female screws 40, 41 is f.
c>b>d> e (1) and (c−b) + f = (d−e) + f = a (2) are set to be satisfied, and
c−b = b−d = d−e... (3) is set to be satisfied.
[0028]
Specific examples of the above dimensions are as follows.
[0029]
First example: a = 210 mm, b = 95 mm, c = 115 mm, d = 75 mm, e = 55 mm, f = 190 mm
[0030]
Second example: a = 210 mm, b = 100 mm, c = 120 mm, d = 80 mm, e = 60 mm, f = 190 mm
[0031]
And the seat surface 21 dimensioned in this way can adjust the front-back position as follows.
[0032]
First stage ...
As shown in FIG. 3 (A), with one end 21a of the seat surface 21 facing the front of the chair 1, a male screw (not shown) is inserted through the through portion 37 and screwed into the second female screw 40. Now, one male screw (not shown) is inserted into the through portion 38 and screwed into the fourth female screw 42. In this case, since the distance c from the one end portion 21a of the seat surface 21 to the second female screw 40 is the largest due to the above dimension setting, the depth of the seat surface 21 from the one end portion 21a of the seat surface 21 to the backrest 12 is the deepest. Is set.
[0033]
Second stage ...
As shown in FIG. 3B, in the same manner as the first stage, with one end 21a of the seating surface 21 facing the front of the chair 1, a male screw (not shown) is inserted into the through-hole 37 to form the first female screw 39. At the same time, another male screw (not shown) is inserted through the through portion 38 and screwed into the third female screw 41. In this case, since the distance b from the one end 21a of the seating surface 21 to the first female screw 39 is the second largest by the above dimension setting, the depth from the one end 21a of the seating surface 21 to the backrest 12 is the second largest. Is set.
[0034]
Third stage ...
As shown in FIG. 3C, with the seat surface 21 facing in the opposite direction, the other end portion 21 b of the seat surface 21 faces the front of the chair 1, and a male screw (not shown) is inserted into the through portion 37. Is inserted into the third female screw 41, and another male screw (not shown) is inserted into the through portion 38 and screwed into the first female screw 39. In this case, since the distance d from the other end 21b of the seating surface 21 to the third female screw 41 is the third largest by the above dimension setting, the depth from the other end 21b of the seating surface 21 to the backrest 12 is the third. Deeply set.
[0035]
Fourth stage ...
As shown in FIG. 3 (D), the male surface (not shown) is shown with the other end portion 21b of the seating surface 21 facing the front of the chair 1 with the front and rear direction of the seating surface 21 opposite to that of the third step. A screw is inserted through the through portion 37 and screwed into the fourth female screw 42, and another male screw (not shown) is inserted through the through portion 38 and screwed into the second female screw 40. In this case, since the distance e from the other end 21b of the seating surface 21 to the fourth female screw 42 is the smallest by the above dimension setting, the depth from the other end 21b of the seating surface 21 to the backrest 12 is set to be the shallowest. The
[0036]
Therefore, according to the connecting means in this way, it is possible to adjust the front-rear position of the seating surface 21 in a stepwise manner, whereby the depth of the seating surface 21 can be adjusted in a stepwise manner. Yes. Therefore, in combination with the adjustment of the height positions of the seating surface 21 and the backrest 12 described above, the sitting comfort in which the height of the seating surface 21 and the backrest portion 12 and the depth of the seating surface 21 can be adjusted according to the growth of the child. A good chair 1 can be provided. If the above expression (3) is satisfied, the depth of the seating surface 21 can be adjusted at a constant pitch (for example, every 20 mm in the above numerical example).
[0037]
Further, according to this connecting means, the front / rear position of the seat surface 21 is adjusted by changing the front / rear direction of the seat surface 21 between the first stage, the second stage, the third stage, and the fourth stage. Further, as described above, the front and rear positions of the seating surface 21 can be set in four stages simply by providing the through-holes 37 and 38 in the seating throughs 16 and 17 and the four female screws 39, 40, 41 and 42 on the seating surface 21. Can be adjusted. Therefore, there is an advantage that the number of penetrating portions 37 and 38 and female screws 39, 40, 41, and 42 to be provided is small for a large number of adjustable steps. The one end 21a and the other end 21b of the seat surface 21 are formed with different planar shapes so that they can be easily identified when adjusting the front-rear position. Specifically, the one end 21a is more rounded. It is formed in a flat shape with a tinge.
[0038]
Further, in the chair 1 according to this embodiment, since the seat portion 11 and the backrest 12 are integrally formed as described above, the adjustment of the height position of the seating surface 21 and the adjustment of the height position of the backrest 12 are performed. Are performed simultaneously in conjunction with each other, that is, if the height position of the seat surface 21 is changed, the height position of the backrest 12 is also changed at the same time, and conversely, if the height position of the backrest 12 is changed, the height position of the seat surface 21 is also changed. It can be changed at the same time. On the other hand, the adjustment of the front / rear position of the seat surface 21 and the adjustment of the height position of the seat surface 21 and the backrest 12 are not linked to each other, that is, regardless of the height position of the seat surface 21 and the backrest 12. The front and rear positions of the seat surface 21 can be adjusted. Conversely, the height positions of the seat surface 21 and the backrest 12 can be adjusted regardless of the front and rear positions of the seat surface 21. In this way, the chair 1 is originally intended for the seat surface 21 to come forward (the depth of the seat surface 21 can be taken) as the seat surface 21 rises. Regardless of the fact, the front and back positions of the seating surface 21 can be adjusted, so that the depth of the seating surface 21 can be selected independently according to the body shape and preferences of the user.
[0039]
The chair 1 according to this embodiment is made of wood such as beech material, and a covering layer such as cloth or vinyl is stretched on the upper surface of the seat surface 21. The female screws 32, 35, 39, 40, 41, and 42 as fastening means include wood anchors and nuts, and the male screws 33 and 36 include bolts such as hexagon socket bolts.
[0040]
Further, when assembling and disassembling the chair 1, adjusting the height positions of the seat surface 21 and the backrest 12, adjusting the front and rear positions of the seat surface 21, etc., the male screws 33 and 36 are shown in FIG. Such a hexagon wrench 51 may be used. Although this hexagon wrench 51 is generally provided to the user as an accessory of the chair 1, it is apt to be lost after being used once because of its low frequency of use. Therefore, the chair 1 itself is provided with a storage place for the hexagon wrench 51 so that the hexagon wrench 51 is not lost. From the aesthetic point of view, a suitable place for this storage is a place that is difficult to see from the outside, such as the front face of the rear seat 17, and the hole 51 is inserted into the longitudinal portion 51 a of the hexagon wrench 51 to tape the hexagon wrench 51. Are provided (see FIG. 7A).
[0041]
【The invention's effect】
The present invention has the following effects.
[0042]
That is, first, in the chair according to claim 1 of the present invention having the above-described configuration, the height position of the seat surface and the backrest can be adjusted in the chair provided with the leg portion, the seat surface, and the backrest. Because the front / rear position can be adjusted, it is possible to adjust not only the height of the seating surface but also the height of the backrest and the depth of the seating surface according to the child's growth etc. Can be provided.
[0044]
In addition, since the front and rear position of the seating surface is adjusted by changing the direction of the seating surface in the front-rear direction, the seating surface can be seated even if the number of fastening means such as penetrating parts and female screws is small. It is possible to set a large number of adjustment steps for the front and rear positions of the surface. Particularly, in the chair according to claim 2 of the present invention, with respect to the adjustment of the front and rear positions of the seat surface, the through portion is provided in the seat through which the seat surface is detachably supported. Two seats are provided side by side in the front-rear direction, and first to fourth female screws are provided on the lower surface of the seat side by side in the front-rear direction of the seat surface. The distance from one end of the seat surface to the first female screw is b, the distance from one end of the seat surface in the front-rear direction to the second female screw is c, and the other end of the seat surface in the front-rear direction is the third female screw. The distance to the screw is d, the distance from the other end in the front-rear direction of the seat surface to the fourth female screw is e, the second The distance between the beauty third female thread as f,
c>b>d> e
And (c−b) + f = (d−e) + f = a
Therefore, the front and rear positions of the seating surface can be adjusted in four steps by simply providing two through parts in the seating and four female screws on the seating surface. Therefore, the number of penetrating portions and female screws to be provided can be reduced for a large number of adjustable steps.
[Brief description of the drawings]
FIG. 1 is a plan view of a chair according to an embodiment of the present invention. FIG. 2 is a front view of the chair. FIGS. 3A to 3D are side views of the chair with a high seating surface and a high backrest. FIG. 4 is a perspective view of the chair in both of FIG. 4A and FIG. 5B. FIG. 5 is an explanatory view showing a connecting structure between the leg and the seat in the chair. FIG. 6 is an explanatory view showing a connecting structure of a leg and a backrest in the chair. FIG. 7 is a plan view of the chair with the seating surface removed, and (A) is a plan view of a portion other than the seating surface. , (B) is a plan view of the seating surface [Fig. 8] An illustration of a hexagon wrench turning a male screw [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Chair 2 Leg 3 Leg 4 Front leg 5 Rear leg 6 Armrest 7 Leg side penetration 8 Leg front penetration 9 Leg rear penetration 11 Seat 12 Backrest 13 Seat side 14 Lower seat side 15 Upper seat side 16 Front seat penetration 17 Rear side Seat through 18 Lower back through 19 Center back 20 Upper back through 21 Seat 21a One end 21b Other end 31, 34, 37, 38 Through 32, 35, 39, 40, 41, 42 Female thread 33, 36 Male thread 51 Hexagon wrench 51a Longitudinal portion 52 Recessed portion

Claims (2)

A chair with a leg, a seat and a backrest,
The height position of the seating surface and the backrest can be adjusted, the front-rear position of the seating surface can be adjusted , and the adjustment of the front-rear position of the seating surface is fixed by changing the direction of the front-rear direction of the seating surface A chair characterized by being performed. The chair of claim 1 ,
Regarding the adjustment of the front and back position of the seat surface, the seat surface is detachably supported on the seat through of the seat portion, and two through portions are provided in the seat through, and the two through portions are arranged in the front and rear direction of the seat surface. First to fourth female screws are provided on the lower surface of the seating surface, and the first to fourth female screws are arranged in the front-rear direction of the seating surface, and the distance between the two through portions is a, The distance from one end of the seat surface in the front-rear direction to the first female screw is b, the distance from one end of the seat surface in the front-rear direction to the second female screw is c, and the other end of the seat surface in the front-rear direction D is the distance from the first female screw to the third female screw, e is the distance from the other end of the seat surface in the front-rear direction to the fourth female screw, and f is the distance between the second and third female screws.
c>b>d> e
And (c−b) + f = (d−e) + f = a
A chair characterized by satisfying the relationship.

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