JPS6344264Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic locking device for a rotating seat, and more particularly, to an automatic locking device for a rotating seat that locks a rotating seat that can freely change the direction of the seat in a predetermined position.

When a rotating seat that can freely change the direction of the seat is applied as a seat in a car, for example, the rotating space inside the car is relatively small, so it is desirable to be able to rotate the seat after folding the backrest forward. Particularly in cars where the rotating space cannot be seen, rotating the backrest while standing may cause you to hit surrounding obstacles, so it is preferable to push the backrest forward. Furthermore, if the backrest of the seat is rotated while the seat is in an upright position, there is a problem in terms of weight balance.

In view of these circumstances, the purpose of the present invention is to push the backrest forward when rotating the seat, and this forward pushing action unlocks the rotating seat. ,
To provide an automatic locking device for a rotating seat, which is suitable for miniaturization, particularly for thinning, and automatically locks the seat at a predetermined locking position when the seat rotates and comes to a predetermined locking position.

The present invention will be explained below with reference to illustrated embodiments. The seats shown in FIGS. 1a, b, and c are rotating seats to which the automatic locking device of the present invention is applied, and
is rotatably attached to the rear of the seat 2, and the seat 2 is rotatably attached to the legs 6. A base plate 8 is integrally attached to the rear side surface of the seat 2, the lower end of the arm 7 is rotatably attached to the base plate 8, and the upper end of the arm 7 is attached to the backrest 1. There is. Base plate 8
The arm 7 is provided with a reclining mechanism (not shown), and by actuating this with the operating lever 3, the backrest 1 is reclined.

FIG. 2 shows the internal structure of the seat, in which the seat rotating board 4 is rotatably mounted on the seat fixing frame 5 that constitutes the legs 6. The base plate 8 and the arm 7 are attached to both sides of the seat rotation base plate 4, and an auxiliary arm 9 is attached to the intermediate portion of the seat rotation base plate 4. This auxiliary arm 9
When the backrest portion 1 is reclined, it is designed to fall forward or backward according to the tilting operation. A locking mechanism 11 is attached to the left and right sides of the seat fixing frame 5 and the seat rotating board 4 as shown by dotted lines, and this locking mechanism 11 is connected to the auxiliary arm 9 by a connecting wire 10 also shown by dotted lines. ing. When the backrest 1 is pushed forward, the auxiliary arm 9 also tilts forward, and the connecting wire is pulled, thereby locking the locking mechanism 1.
1 is now operational.

FIG. 3 shows the details of the locking mechanism 11, in which a locking member 12 is attached to the seat rotation base plate 4, and a locking member 12 is attached to the comb portion 12a formed on the locking member 12. An engaging member 13 is swingably attached to the seat fixing frame 5. This engaging member 13 is formed with an engaging hole that engages with the comb portion 12a, and this engaging hole engages with the locking member 12.
By engaging with the comb portion 12a of the lock member 12, the seat rotating base plate 4 becomes fixed without rotating relative to the seat fixing frame 5, and the engaging member 13 engages with the comb portion 12a of the lock member 12. By disengaging and separating from the engagement with 12a, the seat rotating base plate 4 becomes rotatable with respect to the seat fixing frame 5. The details of how the locking member 12 is attached to the seat rotating base plate 4 are as shown in FIG. As shown in FIG. 5, it is swingably attached to the seat fixing frame 5 through pins 18. The above-mentioned engaging member 1
The release member 14 serves as a member for controlling the comb portion 12a of the lock member 12 so as to be able to engage and disengage the comb portion 12a of the lock member 12.
is provided. This release member 14 is the fifth
As shown in the figure, a hook portion 14a is formed at one end, and this hook portion 14a engages with the upper end portion of the engaging member 13, thereby pulling the engaging member 13. A connecting wire 10 is attached to the other end of the release member 14 via a pin 21, and this connecting wire 10 is connected to the auxiliary arm 9 via a guide tube 15. The release member 14 is attached to the holding member 16 via a guide member 16a so as to be slidable left and right, and is provided between a fixing member 20 provided near the tip of the release member 14 and the guide member 16a of the holding member 16. The release member 14 is always pushed toward the engaging member 13 by the spring 17, and the hook portion 14a of the release member 14 is brought into engagement with the tip of the engaging member 13, as shown in FIG. It's getting old. Further, one end of the holding member 16 is attached to a bracket 2 attached to the seat rotating base plate 4.
3 by means of a bin 24 so as to be swingable. The locking member 12 is connected to the auxiliary member 19.
Together with this, an inner rail 31 of the seat rotating base plate 4 is formed, and a guide rail 30 is provided for this inner rail 31, and this guide rail 30 is integrally attached to the seat fixing frame 5. Further, the engaging member 13 is connected to the pin 1.
The lock member 12 is attached to the lock member 12 so as to be able to swing freely around the lock member 8, and is always urged in the direction of engagement with the comb portion 12a of the lock member 12 by a biasing means such as a spring (not shown). The tip is formed to be slightly inclined to the left.

The automatic locking device for a rotating seat according to the present invention is constructed as described above.

Next, its effect will be explained. When the backrest 1 of the seat is upright as shown in FIG. 13 engages with a locking member 12 attached to the seat rotating base plate 4 to fix the seat so that it does not rotate. At this time, the hook portion 14a formed at one end of the release member 14 is connected to the engaging member 13.
It is designed to engage with the tip of the and,
In this state, the release member 14 is not pulled by the connecting wire 10 and is in the state shown in FIG. 5 due to the action of the spring 17. When the backrest is pushed forward from this state as shown in FIG. The release member 14 is pulled in the direction shown by the arrow 33 in the figure, and by this pulling action on the connecting wire 10, the release member 14 is pulled in the direction shown by the arrow 32 as shown in FIG. 6 against the spring 17. I'm being pulled in. As a result, the hook portion 14a of the release member 14 pulls the engaging member 13 in the same direction, thereby causing the locking member 12
The engagement between the comb portion 12a and the engaging member 13 is released, and the seat rotating base plate 4 becomes rotatable with respect to the seat fixing frame 5. Then, with the backrest portion 1 pushed forward in this manner, the locking member 12 is
When the seat is disengaged from the engaging member 13 and the seat is rotated 180 degrees so that the direction of the seat faces backwards as shown in FIG. The comb portion 12a of the rotating locking member 12 engages with the engaging member 13, and the seat is now locked. At this time, the shape of the locking member 12 is circular so that the comb portion 12a of the locking member 12 that is rotating and moving smoothly contacts and engages the engaging member 13 provided on the opposite side. It is formed with Further, as shown in FIG. 6, when the engagement member 13 is pulled by the release member 14 and the seat is rotated with the lock member 12 and the engagement member 13 disengaged, the release member While the hook portion 14a of 14 is engaged with the upper end of the engaging member 13, it is in the state shown in FIG. 6, but since the axis of the engaging member 13 is as small as an elbow, The engagement between the hook portion 14a and the engaging member 13 is slight, and as soon as rotation begins, this engagement is released, and the engaging member 13 immediately changes from an inclined state to an upright state and rotates. do. Then, as described above, when the lock member on the opposite side is reached, the two engage again as shown in FIG. 4 or FIG. 7, and the seat is locked. In this way, as shown in FIG. 4 or FIG.
After the seat is locked and fixed by engaging the
If the backrest 1, which has been pushed forward and rotated as shown in Figure b, is placed in the upright state as shown in Figure 1A,
The above-mentioned auxiliary arm 9 also becomes an upright state, and the above-mentioned connecting wire 10 loosens from the state where it was pulling the release member 14 and returns to the initial state, so that the release member 14 is returned to its original state by the action of the spring 17. As shown in FIG. 8, the hook portion 14a of the release member 14 comes into contact with the upper end of the engagement member 13 and pushes over it, returning to the state shown in FIG. At this time, the upper end of the engaging member 13 is formed to be inclined to the left so that the hook portion 14a can easily push over the upper end of the engaging member 13. At this time, when the release member 14 pushes past the upper end of the engaging member 13, the holding member 16 that slidably holds the release member 14 is moved so that the release member can move slightly upward. One end is pin 24
It is swingably attached to the bracket 23 by.

As explained above, according to the present invention, the tilting operation of the backrest engages the comb portion 12a of the locking member 12 that fixes the seat rotating base plate 4 to the seat fixing frame 5 via the connecting wire 10. Member 13
The engagement member 13 releases the engagement with the comb portion 12a of the locking member 12, thereby allowing rotation of the seat, and when the seat rotates to the opposite position, the engagement member 13 Since the seat is automatically engaged and locked, there is no need to check or worry about the narrow rotation space when rotating the seat, such as in a car. Moreover, the weight load can be balanced when the seat rotates.

Further, the automatic locking device for a rotating seat according to this invention is configured such that each member performs a sliding movement or a swinging movement along the approximate surface direction of the fixed frame or rotating board. There is no movement in a direction perpendicular to the planes of the fixed frame or rotating substrate, and the configuration is particularly suitable for making the device thinner.

[Brief explanation of the drawing]

1a, b, and c are perspective views of a rotating seat to which the automatic locking device for a rotating seat of the present invention is applied; FIG. 2 is a perspective view showing the internal structure of the rotating seat of FIG. 1;
3 is a plan view of an automatic locking device for a rotating seat showing an embodiment of the present invention, FIG. 4 is a diagram of the operation of the automatic locking device shown in FIG. 3, and FIG. The detailed side views of the locking device, FIGS. 6 to 8, illustrate the operation of the automatic locking device of FIG. DESCRIPTION OF SYMBOLS 1... Backrest portion, 2... Seat, 4... Seat rotating board, 5... Seat fixing frame, 9... Auxiliary arm, 10... Connection wire, 11... Lock mechanism, 12... Lock member, 12a...comb part, 13
...Engaging member, 14...Release member, 16...
Holding member, 17... spring, 14a... hook portion.

Claims (1)

[Claims for Utility Model Registration] An automatic locking device for a rotating seat, which rotates to change the direction of the seat 2 and allows the backrest 1 to move forward, comprising a locking member 12 attached to a seat rotating board 4.
It is attached to the fixed frame 5 so as to be freely engageable and detachable from the locking member 12, and when engaged with the locking member 12, the rotary board 4 is fixed to the fixed frame 5 in a non-rotatable manner. When the rotary board 4 separates from the lock member 12, the engagement member 13 becomes rotatable with respect to the fixed frame 5, and the engagement hole of the engagement member 13 is rotated in order to control the release from the comb portion 12a of the lock member 12. Board 4
It is attached to a holding member 16 that can swing freely against the surface of the engagement member 13 so as to be slidable along substantially the surface direction, and is constantly pushed toward the engagement member 13 by a spring 17, so that one end hook portion 14a is attached to the engagement member 13. A release member 14 that engages with the upper end and pulls the engagement member 13 in a predetermined direction; and a release that is attached to the other end of the release member 14 and connected to an auxiliary arm 9 provided in the middle of the rotating base plate 4. Connecting wire 1 that pulls the member 14
0; an auxiliary arm 9 that tilts as the backrest portion 1 tilts forward; and at least one of the locking member 12 and the engaging member 13 is biased to engage with the other; An automatic locking device for a rotating seat, characterized in that it is equipped with biasing means that automatically engages when the seat 2 rotates and comes to an opposing position, and automatically locks the rotation of the seat 2.