JPH0325632Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a sliding seat chair mainly used in conference halls, etc., which maintains the same state even when standing from a seat that has been moved forward after sitting, and when leaving the seat. This invention relates to a temporary locking device for a seat that returns to its original position by pushing it slightly backwards.

In general, in the case of conference chairs, etc., whose leg supports are fixed to the floor and the front of the chair serves as an aisle, the seat moves forward to the working position as soon as the person is seated, and retreats to the original position as soon as the person stands up. Sliding chairs are used, but people may have to stand up for voting or answering questions.
It would be inconvenient for the seat to move backwards every time you move your upper body, so the seat is locked as soon as you sit down, and unlocked when you leave. Locking and unlocking was troublesome.

However, in order to eliminate and solve the above-mentioned drawbacks, the present invention automatically locks the seat when the seat is moved forward after sitting, and the lock is released when the seated person simply pushes the seat lightly with the back of his/her knees when leaving the seat. This invention provides a temporary locking device for a seat, and the specific configuration of the device will be explained below with reference to the illustrated embodiment.

That is, a seat in which a seat frame 2 supporting a seat portion can slide back and forth via guide rollers 5...5 with respect to a fixed frame 4 integrated with a leg support 3, and is always urged rearward by a spring or the like. In the sliding chair 1, the front end is pivoted at the rear part of the fixed frame 4 relative to the leg support ₃ , and a tapered tongue piece ₆₂ is formed at the rear end, and is continuous with this tongue piece. A stopper 6 in which a recess _{63 into which a rod 21 fixed} to the rear lower surface of the seat frame 2 fits is formed is provided on the rear lower surface of the seat frame 2, and the stopper 6 is always urged upward and the lower surface of the fixed frame 4 It is characterized by a structure in which a spring 8 whose biasing force can be changed by an adjustment screw 7 provided in the spring 8 is provided.

The seat frame 2 is tilted forward and downward relative to the horizontal fixed frame 4, and when a person sits on the seat attached to the flange at the upper end of the seat frame, the seat frame 2 is tilted backwards by a spring or the like due to the weight of the occupant. It is structured to move forward against the forces. Further, the spring 8 has a washer ₈₁ integrated with the stopper 6,
It is interposed between _{a washer 8 2 that moves up and down by being pushed by a screw shaft 7 2 that} moves up and down when the wing nut 7 ₁ of the adjustment screw 7 is turned. The structure is such that the restoring force of the spring 8 can be changed depending on. In the figure, 9, 10
1 is a stopper having a cushioning effect, such as rubber, on which the front and rear bent pieces of the seat frame 2 abut, respectively;
1 is a script typeface.

Next, in accordance with the above-mentioned configuration of the present invention, the operation and effects of the present device will be explained with reference to the illustrated embodiments.

That is, FIG. 4 shows the position of the seat when it is vacant, and the seat frame 2 is moved backward by a biasing means such as a spring.

When the seated person sits on the seat, the seat frame 2 is tilted forward and downward, so the guide rollers 5...5 roll on the rails (not shown) due to the weight of the seated person. the seat frame 2 moves forward,
The rod 2 ₁ integrated with this is the tongue piece 6 ₂ of the stopper 6.
The stopper 6 is pressed down against the restoring force of the spring 8 using the pivot ₆₁ as a fulcrum to fit into the recess ₆₃ , and at the same time the bent piece at the rear end of the seat frame hits the stopper 10. It touches and stops (state shown in Figure 3).

Even if you are standing in this state, the rods ₂₁ are fitted into the recesses ₆₃ of the stopper 6, so even if the seat frame 2 tries to move back due to the backward biasing force, the locking force is stronger and it will move back. This forward position is maintained. When leaving the seat, when the seated person stands up and pushes the seat backwards with the back of his/her knees, this force and the biasing force cause the rod ₂₁ to push down the stopper 6 and escape from the recess ₆₃ , resulting in the retreat shown in Fig. 4. Return to position. Thereafter, the above operation is repeated each time a seated person takes or leaves the seat.

As described above, according to the seat temporary locking device of the present invention, when a seated person sits on the receding seat part, the seat is automatically locked as soon as it advances to the work position, and the seat is automatically locked at that position. The seat does not move backwards just by standing up, but when you push the seat back with the intention of leaving the seat, the lock is automatically released and the seat moves backwards. It is convenient because the user does not have to perform the troublesome operation of locking the seat one by one, and the engagement force of the stopper with the rod can be adjusted using an adjustment screw, so it can be adjusted for ease of use by the seated person. Not only this, but even if the rod or stopper wears out, the engagement force can be returned to its previous state by tightening the adjustment screw.
It has great practical effects, such as being economical and being able to greatly extend the period of use of the rod or stopper.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a front view of a sliding chair equipped with the proposed device with the seat portion omitted, FIG. 2 is a side view of the same, and FIG. 3 is a view of the seat in the forward position. FIG. 4 is a longitudinal sectional side view of the same essential part in the retracted position. 1...Seat sliding chair, 2...Seat frame, 3
... Leg support, 4 ... Fixed frame, 5 ... Guide roller, 6 ... Stopper, 7 ... Adjustment screw, 8
……spring.

Claims (1)

[Scope of utility model registration request] The seat frame 2 that supports the seat part is a leg support 3
The guide roller 5 is connected to the fixed frame 4 which is integrated with the
In the sliding seat chair 1, which can be slid back and forth through the frame 5 and is always biased rearward, the front end is pivoted at the rear portion of the fixed frame 4 than the leg support ₃ , and the rear A stopper 6 is provided with a tapered tongue piece ₆₂ formed at the end thereof, and a recessed part ₆₃ into which a rod ₂₁ fixed to the rear lower surface of the seat frame 2 is fitted in a continuous portion of the stopper 6. Temporary engagement of the seat in a seat-sliding chair, which is provided with a spring 8 which always urges the stopper 6 upward and whose urging force can be changed by an adjustment screw 7 provided on the lower surface of the fixed frame 4. Stop device.