JPS6010437Y2 - Chair - Google Patents

Description

[Detailed description of the invention] This invention maintains the seat in a horizontal position when the seat is supported by a main leg rod and an auxiliary leg rod that are pivoted freely to a mounting board that fixes the seat to the floor. On the other hand, it relates to a chair that can move the seat forward by swinging the leg levers forward when not in use, and can be stored under a desk, especially for fixed desks placed in school classrooms, lecture halls, etc. The purpose is to propose a chair that is convenient when used in conjunction with a chair.

Hereinafter, the embodiments illustrating the present invention will be described in detail.
The figure is a perspective view of the chair according to the present invention, and Figure 2 is an enlarged side view showing an example of its use when placed opposite to a desk fixedly installed in a classroom, etc. The reference numeral 1 in the figure is a backrest. 2 is a seat integrally equipped with the seat, 3 is the main leg lever that supports the seat, 4 is the auxiliary leg lever, and 5 is for fixing the seat to the floor via the main leg lever 3 and the auxiliary leg lever 4. This is the mounting board.

The mounting board 5 is formed in the shape of a flat plate, and has pivot parts 6 and 7 on its upper surface, spaced apart from each other by a required distance at the front and rear parts, to which one end of each of the leg rods 3 and 4 is pivoted. , one end of the main leg lever 3 of the front pivot portion 6 and one end of the auxiliary leg lever 4 are pivotably attached to the rear pivot portion 7.

The main landing gear rod 3 shown in this embodiment has two L-shaped bent metal rods arranged parallel to each other with an interval left and right, and one end of each rod is in contact with a hollow connecting rod 8 at a right angle. The connecting rod 8 is welded together, and a shaft 9 passing to the front pivot portion 6.6 provided on the mounting board 5 is inserted into the hollow portion of the connecting rod 8.
It is designed to swing back and forth around the center.

The other auxiliary leg rod 4 is made up of two straight metal rods arranged in parallel and joined at the middle of their length by a connecting rod 10.
The lower end of each metal rod is pivotally connected to the left and right pivot joints 7, 7 provided at the rear of the mounting board 5 via respective support shafts 11, 11, so that it can swing back and forth in the same manner as the main landing gear rod 3. Installation.

In the figure, reference numeral 12 denotes a pivot piece fixed to the lower surface of the seat 1 in order to pivotally attach the other end of each leg rod 3.4 pivotally attached to the mounting board. It consists of a pair of plate pieces that hang down from each other, and the front part of the plate piece has a pivot part 13 to which the other end of the main landing gear rod 3 is pivotally attached, and the rear part thereof has a pivot part 13 to which the other end of the auxiliary landing gear rod 4 is pivotally attached. Pivot parts 14 are provided to allow free rotation, respectively, and seats are attached to the upper ends of both leg rods 3.4.

The state shown by the solid line in FIGS. 1 and 2 is the posture in use, where the main landing gear rod 3 has one end pivoted to the pivot joint 6 of the mounting board 5.
supports the seat 1 with one L-shaped side lying horizontally along the top surface of the base plate 5 and the other side standing vertically; 14 to support the seat which is about to rotate rearward about the pivot part 13, and horizontally support it to enable seating.

When the seat in this state receives the weight of the seated person, the bent portion 3' of the L-shaped main landing gear rod 3 comes into contact with the floor (the upper surface of the mounting board 5 in the embodiment shown in the drawings), causing the main landing gear to The swinging of the rods is restrained and the auxiliary leg rods 4 support the rear of the seat, ensuring a stable sitting posture.

In the figure, reference numeral 15 denotes a grounding member made of soft synthetic resin attached to the lower surface of the bent portion 3' of the main landing gear rod.

On the other hand, when the above-mentioned seat supported so as to be seated is pushed forward after defecation, the leg rods 3 and 4 are free to rotate with each end attached to the pivot parts 6, 7 and 13, 14, as described above. Because it is pivoted to
It is possible to move forward by swinging both leg levers using the pivot parts 6 and 7 of the mounting board 5 as fulcrums.

Therefore, as shown in FIG. 2, when the fixing position of the mounting board 5 is determined with respect to the desk 16 on which the chair according to the present invention is fixed to the floor, and the chair is installed and fixed using anchor bolts or the like, the seat is pulled back and the By standing up one side of the leg rod 3 vertically, the user can sit down, and by pushing the post-ejaculation seat forward, the seat and leg lever can be sent and stored under the desk.

In addition, when this seat is moved backwards when moving back and forth, that is, when it is converted to a seated position, the bent portion 3' of the main landing gear lever 3 comes into contact with the ground, stopping the swinging of both leg levers. However, since there is no such restraint when moving forward, the leg levers are free to swing until the seat hits the floor, causing an inconvenience. Now, when the connecting rod 10, which also serves as a stopper in the middle of the length of the two metal rods that make up the auxiliary landing gear rod 4, swings forward because it is a crossing, this connecting rod 10 is placed in the middle of the main landing gear rod 3. By colliding with the desk to control the swinging and avoid collision with the desk,
This is to ensure sufficient forward movement of the seat.

As described above, the chair of the present invention allows the seat to be moved back and forth by the swinging of the main and auxiliary leg levers, and when the seat is moved backwards, its swinging is restrained by the contact of the bent part of the main leg lever with the ground. The seat is automatically held in a seatable state by the support of the main leg lever and the auxiliary leg lever, and by pushing the seat forward after defecation, both leg levers are moved forward along with the seat, such as under a desk. It will be possible to store it.

In this case, the seat can be moved back and forth by simply pushing the seat back and forth, so it is extremely easy to handle.

By the way, in the above embodiment, the case where two metal rods are arranged in parallel for each of the main landing gear rod 3 and the auxiliary landing gear rod 4 was explained, but this is a consideration to prevent the seat 1 from tilting sideways and to stabilize it. This does not preclude the use of a single leg lever by selecting the mounting board for each leg lever and the means for pivoting the leg lever to the seat.

By the way, in the case of the embodiment, if either the main landing gear rod 3 or the auxiliary landing gear rod 4 is made of a single metal rod, the seat will be supported at three points, so the pivoting means should be selected in particular. Stable support for the seat can be ensured even without this.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, and FIG. 2 is an enlarged side view showing the state of use. 1 is the seat, 3 is the main leg lever, 4 is the auxiliary leg lever, 5 is the mounting board, 6
, 7 are pivot joints provided on the mounting board, and 13 and 14 are pivot joints provided on the seat.

Claims (1)

[Scope of utility model registration request] Pivot joints are provided on the mounting board that is fixed to the floor and on the underside of the seat at the required intervals in the front and rear, and one end of the main landing gear rod formed in an L shape is attached to the front and rear pivot joints of the mounting board. The end of the other side, which stands vertically with one side in contact with the floor surface, is freely pivoted to the front pivot part of the seat, and the other side is pivoted to the rear pivot part of the mounting board. An auxiliary leg lever is freely pivoted to the mounting part, and the other end is freely pivoted to the pivot part at the rear of the seat.The seat is supported horizontally by these two leg levers, and the front and rear of the mounting board are 1. A chair characterized in that the seat can be moved forward by swinging both leg levers forward at the pivot point of the chair.