JPH0139477Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fixing device for a flip-up armrest that is attached to both sleeves of a seat.

The armrests of stools are generally fixed.
However, configuring the armrests in a flip-up type not only makes it easier to move the seating position, improving the usability of the seat, but also makes it easier for elderly people and people with disabilities to sit down or leave their seats from the aisle. . In recent years, in response to such demands, armrests have been proposed that have a movable function and are configured in a flip-up type or a removable type. However, especially with regard to conventional flip-up armrests, there is no device to secure them in use, that is, in the horizontal position. There was a risk of an accident occurring.

In view of the above-mentioned problems, the purpose of this invention is to provide a flip-up armrest with a fixing device in its horizontal position so that the armrest will not be flipped up carelessly while sitting, thereby increasing the safety of the seat. It is said that

Embodiments of the present invention will be described below with reference to the drawings.

In the drawings, reference numeral 1 denotes an armrest of the seat, which is attached to the frame 2 of the seat at its rear end so as to be rotatable in the vertical direction. A stay 3 is disposed below this armrest, and is configured to be able to hang the front end of the armrest 1 when it is laid down so that it does not rotate and hang down below a predetermined height. That is, a guide groove 4 extending from the rear end toward the front end is provided on the lower surface of the armrest 1, and the shaft 5 attached to the upper end of the stay 3 is fitted into this guide groove 4, and the lower end of the stay 3 is connected to the frame. Rotatably attach to 2. At a predetermined height of the front end of the armrest 1, the shaft 5 of the stay 3 comes into contact with the front edge of the guide groove 4 of the armrest 1, locking the front end of the armrest 1 which is about to rotate downward, and When the armrest 1 is flipped upward, the shaft 5 of the stay 3 slides in the guide groove 4 as the armrest 1 rotates upward, and the stay 3
Rotate upward. In this armrest 1, a hook 6 is arranged in front of the guide groove 4. This hook 6
behind the shaft support 7, there is a locking piece 8 for latching the shaft 5 which has come to a stop in contact with the front end edge of the guide groove 4 from above, and a shaft 5 which slides forward in the guide groove 4. The hook 6 is provided with a tapered portion 9 that abuts to push the rear end side of the hook 6 upward, and is constantly urged by a spring 10 to pull the rear end side downward. 11 is a hook 6 which resists the tensile force of a spring 10.
Push up the rear end side to release the latching operation of the latching piece 8 of the hook 6 to the shaft 5. A stopper 12 is arranged in front of this hook 6. This stopper 12 is for preventing the rotation of the hook 6 by the push button 11, and has a lower end as an operating portion projecting below the armrest 1, and an upper end that engages the lower edge of the front end of the hook 6. Together, they form a hook that acts as a wedge. This stopper 12 is connected to the shaft 13
The upper end side is constantly pulled downward by the spring 14, and it moves forward or backward beyond the top dead center formed on the extension line connecting the fixed end of the spring 14 and the shaft 13. and is fixed at the position in the direction of movement.

Since the present invention is constructed as described above, after the lower end of the stopper 12 is swung rearward to release the engagement with the lower edge of the front end of the hook 6, the push button 11 is pushed upward to release the hook 6. The locking piece 8 comes off the shaft 5 of the stay 3 and the armrest 1 can be flipped upwards, and if the armrest 1 is tilted sideways, the shaft 5 of the stay 3 guides the armrest 1 in response to the tilting. It moves forward in the groove 4, abuts against the tapered part 9 of the hook 6, and passes under it while pushing up the latch piece 8, and at the position where it abuts the front edge of the guide groove 4, the latch piece 8 of the hook 6 It is possible to fix the sideways posture of the armrest 1. By making the armrest 1 a flip-up type, the usability of the seat is improved, and
This has the practical effect of increasing its safety.

[Brief explanation of drawings]

The drawings show an embodiment of the fixing device for a flip-up armrest according to the present invention, and FIG. 1 is a partially cutaway side view showing the internal structure, and FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1. 3 are enlarged partial side views showing the mechanism of the hook. 1...armrest, 2...frame, 3...stay,
4... Guide groove, 5... Shaft, 6... Hook, 8...
Latching piece, 9...Tapered portion, 11...Push button, 12...Stopper.

Claims (1)

[Scope of utility model registration request] The shaft of the stay is slidably fitted into a guide groove provided on the lower surface of the armrest, and the rear end part, which has a hook piece and a tapered part formed in front of the guide groove, is pivotally supported so as to be vertically movable. When the armrest is placed sideways and the shaft of the stay is moved to the front end of the guide groove, the hanging piece of the hook can be hung from above on this shaft, and the hook is attached to the lower surface of the armrest upwardly. The flip-up device is characterized by being provided with a push button for pushing up and releasing the latching operation of the latching piece on the shaft, and a stopper that engages with the front end of the hook and acts as a wedge to prevent the vertical movement of the hook. Fixing device for armrests.