JPH0114215Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is concerned with the improvement of a writing chair, that is, a desk chair in which the top plate is folded and the main body is held in an upright position. By positioning the backrest rod below the seat plate in its folded state, the lighting body can be easily stored in the foot space, and the backrest lever can also be placed above the seat board even in its folded state. The idea is to make it possible to sit down and use a chair.

Conventional writing chairs with backrests have a backrest that is folded onto the seat plate and stored in the foot space of the writingbelow body. Not only does it become bulky, making it difficult to store, but it is also inconvenient to handle and use because the backrest rods folded onto the seat board must be erected one by one when in use.

In this invention, by positioning the folded backrest rod below the seat board, the total height of the chair when the backrest is folded is the same as the height of the seat board, making it easy to store in the foot space. This chair is characterized by the fact that it is possible to use the chair by sitting on the seat board even when the backrest is folded.In the figure, A is the writing seat. A chair with a folded backrest is stored in the foot space A', and 1 is a case-shaped chair consisting of legs 2 on both sides, a seat plate 3, a back plate 4, and a bottom plate 5. 6 shows the back cushion body 7.
The backrest rod is shown.

Thus, the backrest rod 6 forms an upper rod 6' and both side rods 6'', 6'' by bending one rod, and the upper end has a support plate fixed between both side rods as in the conventional case. 8 to attach the backrest cushion body 7, and both side rods 6'' are bent from a predetermined position to form bent portions 6″a to form a substantially L-shape in side view, and the bent portions 6″a The tip of the backrest rod 6 is pivotally attached to the upper end of the outer surface of the leg body 2 by a pivot 9, and the backrest rod 6 is attached so as to be rotatable in the direction of arrow P in the figure. The distance l from the point to the support plate 8 at the upper end of the backrest rod 6 and the lower edge of the backrest cushion body 7 is equal to the distance l' from the pivot point to the front edge of the seat plate 3 or the seat cushion body 3' on the seat plate. For l＞
l' and rotate the backrest rod 6 in the direction of the arrow about the pivot 9, it passes through the outside of the front edge of the seat plate 3 and the seat cushion body 3' and is lower than the seat plate. It can be rotated and folded. In addition, when the backrest rod 6 is erected and used as a normal backrest, in order to maintain the erected state, a support shaft 10 such as the one shown in FIGS. 1 and 2 is attached to the legs. 2, and supports the bent portion 6''a of the backrest rod 6 with this support shaft, or directly on the upper edge side of the back plate 4 constituting the base 1, or on the cushion body (not shown). The rear sides of the backrest rods 6 on both sides of the backrest rods 6 are abutted and supported through the support rods.In order to support the backrest rods 6 in an upright state with the backboard 4, the backrest rods 4 should be arranged as shown in FIG. As shown, it is important to make the backrest rod 6 wider than the backrest rod 6, and to strongly connect it to the seat plate 3 and the legs 2 on both sides so as to withstand the load of the backrest. A standing plate 5' is provided to prevent items stored and placed on the bottom plate from falling off, and the backrest rod 6 takes into consideration the bending angle of both side rods 6'' and the pivot point by the pivot 9. By folding the backrest rod 6, the backrest cushion body 7 is brought into contact with the front edge recess 2' of the leg body 2, as shown by the dashed line in FIG. In addition, the folded backrest rod 6 can also be used as a front cover or frame for the front opening of the base 1 to more reliably prevent items stored in the base from falling out. , and can be adjusted up and down by holes 12.

According to the chair of the present invention as described above, the backrest rod 6, which is rotatably connected to the base body 1 by a pivot 9, is moved over the front edge of the seat plate 3 and the seat cushion 3' with the said landing point as the center. By making it possible to fold the chair to a position below the seat plate by rotating it forward and downward, the total height of the chair when the backrest rod is folded is the same as the height of the upper surface of the seat cushion 3', making it less bulky. Not only can it be easily stored in the foot space of the lighting bicycle, but also the backrest rod allows you to sit on the seat board without the need for a backrest. It can be used easily as a chair with a backrest, or by raising the backrest rod 6 and using it as a regular chair with a backrest. It is extremely convenient to use compared to what it is. In addition, since the backrest rod 6 has both side rods 6'' substantially L-shaped in side view, the backrest cushion body 7 can be fitted into the front edge recesses 2' of the both side leg bodies 2 in a folded state. This not only makes it possible to make the longitudinal dimension of the chair in the folded state of the backrest rod more compact, but also allows the upper backrest rod 6' and the back cushion body 7 to be attached to the front cover or frame of the front opening of the base body 1. It can also be used as a body to prevent items stored in the base from falling out.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a side view of the chair, and FIG. 3 is a front view of the chair. 1... Base body, 2... Leg body, 3... Seat plate, 4... Back plate, 5
...Bottom plate, 6...Backrest rod, 7...Backrest cushion, 8...
Support plate, 9... Pivot, 10... Support shaft, 11... Pin,
12...Hole, A...Writing Bi-Euro.

Claims (1)

[Scope of utility model registration request] A backrest cushion body is provided at the upper end of both sides of the chair base formed by connecting the seat plate, legs, etc., and both rods, which are approximately L-shaped in side view and are bent from a predetermined position to form a bent part, are parallel to each other. A backrest rod is provided rotatably at the tip of the bent portion, and the distance from this rotational center point to the backrest cushion body is determined by the distance from the rotational center point to the seat plate or the cushion body on the seat plate. A chair characterized by being larger than the distance to the front edge.