JPS6310764Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rotating device for a seat back body in a chair.

In other words, when listening to a conversation or thinking, you can sit with your body tilted back and lean back, and you can sit at a table and write or read a book. When eating or eating, you can sit comfortably with your seat body tilted forward, and your seat body and back body can rotate back and forth fairly smoothly, allowing you to sit comfortably. The present invention provides a simple structure that can be easily implemented.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a side view of the entire chair, in which a support frame 4 made of a plate with upper and lower edges 4a and 4b bent inward is fixed between the upper parts of both support legs 3 that are installed in the front and back on the left and right sides, respectively. A seat body 2 and a back body 1, which are integral with each other in an L-shaped side surface, are fixed on the upper surface of both pipes 9, which are bent in an L-shaped side surface. , frame plates 10, 10 each having a lower end edge 10a bent outward are vertically provided, and elastic bodies 6, 6 made of rubber are fitted between both support frames 4, 4 and frame plates 10, 10, respectively. Then, the support shafts 5, 5, which are laterally coaxial at an intermediate position in the longitudinal direction of the seat body 2, are fitted into the support frame 4, the elastic body 6, and the frame plate 10, respectively, and the front left and right support legs 3, 3 are inserted. Horizontal rod-made stoppers 7 and 8 are fixedly installed between the upper parts and between the upper parts of the left and right support legs 3 and 3 at the rear, respectively.

In the figure, reference numeral 11 denotes a table.

Therefore, the seat body 2 and the back body 1 can integrally rotate back and forth around the support shafts 5, 5, and the pipes 9, 9 abut against the stoppers 7 as shown in FIG. The seater may lean forward a little, or, as shown in Figure 7, the pipes 9, 9 may collide with the stopper 8 and lean back a little. In the state where it rotates by applying it forward or backward as shown by the arrow B in Fig. 7, resistance is provided by the torsion caused by the joining of the elastic bodies 6, 6, and it is possible to rotate gradually. .

Therefore, when you are writing, eating, or reading a book facing the table 11, you can sit in a forward-leaning position as shown in Figure 6, and you can listen to what is being said. When thinking or thinking, the user can sit with his/her back 1 leaning loosely as shown in FIG. 8.

In this way, the present invention connects the front-rear intermediate part of the seat body 2, which is integrally formed with the back body 1, to the upper support frame 4 of the support leg 3.
The seat body 2 is rotatably supported via a horizontal support shaft 5, and an elastic body 6 is provided on the support shaft 5 or on the lower surface of the seat body 2 to provide resistance to the seat body 2 rotating in the front-rear direction. The seat body 2 and the back body 1 are interposed between the stoppers 7 and 8 because the seat body 2 is configured to abut against the stoppers 7 and 8 in the front and back direction and to restrict rotation. It is possible to tilt forward or backward by rotating it around the support shaft (5) until it collides with the support shaft (5), and by interposing the elastic body 6, the rotation can be performed gradually and slowly. With a simple structure, it is possible to sit with the seat body 2 tilted backwards and lean comfortably against the back body 1, or to sit comfortably with the seat body 2 tilted forward toward the table. It has the advantage of being suitable for implementation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the entire chair, Fig. 2 is a side sectional view, Fig. 3 is a sectional view taken along the - line in Fig. 1, and Fig. 4 is an exploded perspective view. Figures 5 and 7 are explanatory diagrams of the operation of Figure 2;
FIGS. 6 and 8 are explanatory diagrams showing the seated state. 1... Back body, 2... Back body, 3... Support legs, 4...
Support frame, 5... Support shaft, 6... Elastic body, 7, 8...
Stopper.

Claims (1)

[Scope of utility model registration request] The front-back intermediate part of the seat body 2 integrally formed with the back body 1 is pivotally supported on the upper support frame 4 of the support leg 3 via a horizontal support shaft 5, so that the seat body 2 can be rotated in the front-rear direction. An elastic body 6 is interposed on the support shaft 5 or the lower surface of the seat body 2 to provide resistance to the movement, and the seat body 2 abuts against stoppers 7 and 8 in the front-rear direction to restrict rotation. 1. A rotating device for a seat back body of a chair, characterized in that the device is configured so that the seat back body is rotated.