JPS5847903Y2 - flip chair seat - Google Patents

Description

[Detailed description of the invention] The present invention relates to a chair seat that is raised up with a rotating support shaft as a fulcrum, and its purpose is to attach a weight rod to the rear of the support shaft of the seat. The weight rod normally biases the front end of the seat in the upward direction so that it automatically lifts up when a person leaves the seat. The bracket that supports the other support shaft, which does not protrude sideways, is equipped with a stopper, and when the front end of the seat is tilted forward and made horizontal, the end of the weight rod is brought into contact with the stopper and the seat is secured. To provide a seat for a flip-up chair which can be held in a horizontal position and seated on.

The drawings show an example of the present invention applied to a chair with a desk installed in an auditorium, classroom, etc. Figure 1 shows a front view with the left half as a back view, and Figure 2 shows a longitudinal side view. 1 is the pillar,
2 is a top plate supported horizontally by an arm 3 extending rearward from the top end of the support, 4 is a shelf suspended below this top plate, and 5 is a shelf extending between each support in front of the top plate. The backrest plate 6 is installed horizontally as shown in FIG. The seat is supported so that it can be raised freely, and the reference numeral 9 is a weight rod placed horizontally on the lower surface of the rear end of the seat.

The seat 7 shown in this embodiment is assembled by placing a seat plate 12 with a cushion 11 attached on a rectangular pipe frame 10 and fixing them together. A pair of left and right metal fittings 13.degree. 13 are welded together, the rotating support shaft 8 is passed through these metal fittings, and both ends of the metal fittings protrude from both sides of the seat, and are supported by the brackets 6.6.

Similarly, the weight rod 9 is passed through the rear portions of the left and right metal fittings 13.13, and horizontally installed parallel to the rotation support shaft 8, with both ends protruding from the sides of the seat. It is.

Reference numeral 14 denotes a stopper formed in a semicircular arc shape and protruding from the side surface of the bracket 6 that supports the rotational support shaft 8. When the front end of the seat 7 is pushed forward and the front end of the seat 7 is pushed forward, the end of the weight rod, which rotates and rises accordingly, is stopped on its arcuate lower surface, stopping the rotation of the seat and allowing the seat to sit in a horizontal position. It acts to keep it in place.

By the way, the rotatably supported seat 7 may have its rotational support shaft 8 located at the center of the seat or at a position closer to the rear end of the machine so that the center of gravity of the seat as a single seat is approximately balanced in the front and back, or the center of gravity of the seat 7 as a single seat may be approximately balanced between the front and rear ends. By horizontally disposing the weight rod 9 on the rear end side so as to bias the money seat 7 toward the rear end, the front end of the money seat 7 is always urged in the upward direction.

Therefore, according to the present invention, the seat 7, which is rotatably supported on the bracket 6.6 via the rotary support shaft 8, constantly raises its front end by the weight of the weight rod 9 provided at the rear end of the seat. Since it is biased in the direction, when the seat is not in use or when the seated person leaves the seat, it automatically changes to the raised position, while when the front end is tilted horizontally when seated, the weight rod 9 Since both ends abut against the stoppers 14 and their rotation is restricted, a horizontal posture is maintained and the seat can be used for seating.

As described above, the present invention allows a person to sit while maintaining a horizontal position when in use, and is automatically raised up when not in use, making it convenient as a seat for a chair with a desk installed in an auditorium, etc., as shown in the embodiment. In addition, the seat of the present invention has a simple structure and is easy to manufacture, as it only has a weight rod attached to its rear end and a stopper for receiving the end of the bracket, and is extremely easy to manufacture. It has the advantage of being highly practical.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a front view with the left half as a back view, and FIG. 2 is a side view in longitudinal section at the center with the seat flipped up. 1 is a column, 6 is a bracket, 7 is a seat, 8 is a rotating shaft, 9
is a weight rod, and 14 is a stopper.

Claims (1)

[Scope of utility model registration request] In the seat of a flip-up chair, in which the rotating shaft of the seat is supported on a bracket extending from the support and can be raised freely, a weight rod is installed horizontally on the seat at the rear of the rotating shaft, and the weight is always The front end of the seat is biased in the direction of flipping up, while both ends of the weight rod are made to protrude to the sides of the seat, and on the other hand, the bracket is provided with a stopper so that they collide when the front end of the seat is flipped horizontally. A seat for a flip-up chair characterized by being held in a horizontal position.