KR101589043B1 - Swivel armrest locking device for vehicle seat - Google Patents

Abstract

The present invention relates to a rotatable armrest locking device for a vehicle seat, comprising: a cam supported by a cam shaft on an armrest installed on a seat frame by a hinge shaft; and a pivot head, as a disk-type member fixed to the sear frame, having a pivot head with a cam operation hole. The cam operation hole includes first and second supports blocking movement of the cam in one direction to prevent the arm rest from being lowered, a first stop recess receiving the cam moving to one side to block movement thereof as the arm rest is lifted, and a second stop recess positioned on the opposite side of the first stop recess with the first and second supports interposed therebetween, and receiving the cam which has passed through the first and second supports from the first stop recess to block further movement of the cam. Since a rotatable angle range of the arm rest is wide, the arm rest can be lifted to a side portion of the back of the vehicle seat so as to be out of the way when a user gets in or off a vehicle. In particular, since the arm rest can be completely lowered down to the side of buttocks, users can use several seats as necessary without being interfered by the arm rests. In addition, since the arm rest has high load carrying capacity, the arm does not droop downwards, allowing the seat to be safely used.

Description

Technical Field [0001] The present invention relates to a swivel armrest locking device for vehicle seat,

The present invention relates to a pivoting armrest locking device for a vehicle seat.

The seat (seat) for a vehicle installed in a train or a bus is provided with an armrest for allowing the user to travel more comfortably and also for keeping a boundary with a person next to the train.

Various types of armrests have been developed in consideration of ergonomic convenience. Also in this structure, there is a fixed type in which the armrest is completely fixed to the frame of the seat, and a pivoting type in which the armrest can be pivoted up and down. The tilting ceremony. So that it can stand on the side of the seat back so as not to interfere with the passengers getting on and off.

For example, Korean Registered Utility Model No. 20-0440525 discloses an armrest for a vehicle seat and its fastening structure, wherein the armrest is rotatably mounted to a fastener fixed to the frame through a shaft .

However, the conventional armrest for a vehicle seat is disadvantageous in that the rotation angle of the shaft is limited by the fixing surface in the fastener, so that there is a limitation in the rotation angle of the armrest portion. For example, if the armrest is raised as much as possible, it will not rise to the side of the seat backrest.

In addition, when a load greater than a certain amount is applied to the armrest portion, the armrest portion is struck to the lower portion without being able to overcome the load. For example, in order to fix the posture, if you hold the armrest by hand or put your elbows on the armrest and put your weight on it, the armrest will rotate downward by weight.

Of course, the structural problems and limitations of such armrests can cause injuries to passengers.

The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an armrest that can be pivoted up to a side portion of a backrest portion, Accordingly, it is an object of the present invention to provide a locking-type armrest locking apparatus for a vehicle seat that allows a plurality of parallel seats to be used at the same time without being disturbed by an armrest.

It is another object of the present invention to provide a locking-type armrest locking device for a vehicle seat that is excellent in load-carrying properties of armrests and can be safely used even when a large load is applied to the armrests.

In order to accomplish the above object, according to the present invention,

A hinge device for a vehicle comprising: a hinge shaft which is mounted on an armrest rotatably provided on a side portion of a seat frame constituting a vehicle seat, the hinge shaft being rotatably supported by a cam shaft disposed at a position spaced apart from the hinge shaft by a predetermined distance, and;

A disc-shaped member fixed to the seat frame, the pivot head having the hinge shaft at the center thereof, and having a cam actuating hole formed in the inner region thereof;

Wherein the camshaft is provided with a first and a second support jaws which are spaced apart from each other by interrupting movement of the cam in one direction to prevent the armrest from descending in a predetermined position of the armrest, A first stop groove that receives a cam that moves away from the support jaw and blocks movement of the cam, and a second stop groove that is located on the opposite side of the first stop groove with the first and second support jaws therebetween, And a second stop groove for receiving the cam that has passed between the first stop groove and the first and second stop protrusions to stop the movement of the cam, .

In addition, as the lowered armrest is lifted again on the side of the first and second supporting jaws, the cam that has passed between the first and second supporting jaws comes out of the second stopping groove again to the first and second supporting jaws A cam engaging portion for engaging and rotating the cam is further formed.

Further, the cam is fixed to the first and second supporting jaws by lowering the armrest in a state rotated by the cam groove rim portion.

The seat includes a seat portion for supporting the buttocks and a backrest portion for supporting the backrest. The maximum interval between the first and second stop grooves about the hinge axis is set to a minimum distance between the backrest portion and the seat portion Respectively.

In the pivoting fixed armrest locking apparatus for a vehicle seat according to the present invention,

The armrest can be pivoted up to the side of the backrest because the angular range of the armrest is wide,

Especially down to the side of the hips, so that multiple side seats can be used simultaneously without interruption by the armrest, if necessary.

In addition, the armrests are excellent in the load-bearing capacity, so that even when a large load is applied to the armrests, they are not stuck to the bottom.

FIG. 1 is a partially cutaway side view for explaining a configuration of a pivotally fixed armrest locking device for a vehicle seat according to an embodiment of the present invention.
FIGS. 2 and 3 are views for sequentially illustrating the operation of the pivotally fixed armrest locking apparatus for a vehicle seat shown in FIG. 1. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a pivoting-type armrest locking apparatus 100 for a vehicle seat according to the present invention will be described in detail with reference to the accompanying drawings.

Basically, the pivotally fixed armrest locking apparatus 100 for a vehicle seat according to the present embodiment is provided between the seat frame 17 of the vehicle seat and the armrest 19 so that the armrest can be turned up and down largely As well as an armrest positioned in a steady state, so that the armrest is not struck down by an external force.

That is, when the armrest 19 is normally used, the position of the armrest 19 is stably maintained. When the armrest 19 acts as an obstacle, it is completely removed from the upper or lower portion so as not to be caught when the occupant comes off the seat or seats on the seat You can.

Particularly when the armrests 19 are completely rotated downward, the armrests 19 are lowered below the seats of the seat, so that, for example, many of the armrests between the adjacent seats can be lowered and laid down on the seat have.

1 is a partially cutaway side view for explaining a configuration of a pivotally fixed armrest locking apparatus 100 for a vehicle seat according to an embodiment of the present invention.

Referring to the drawings, it can be seen that the vehicle seat 11 is composed of the backrest portion 13 and the seat portion 15. The backrest portion 13 is a portion for expecting the back of a passenger, and the seat portion 15 is a portion for resting the buttocks.

A seat frame 17 is provided inside the backrest 13 and the seat 15. The seat frame 17 serves as a backbone of the backrest portion 13 and the seat portion 15, and is manufactured by pressing and welding metal.

As shown in the figure, the armrest locking device 100 for a vehicle seat according to the present embodiment is provided on one side of the seat frame 17 on the outside of an armrest 19 rotatably provided through a hinge shaft 21 A cam 27a reciprocating within a predetermined angle range with respect to the hinge shaft 21; a cam 27 fitted to the cam shaft 27a and rotatable in a clockwise or counterclockwise direction; And a bobot head 23 fixedly mounted on the seat frame 17 and accommodating the cam 27 therein and adjusting the direction of the cam 27 when the cam 27 is moved.

The armrest 19 is supported on the seat frame 17 through the hinge shaft 21 and is vertically rotatable about the hinge shaft 21. [ For example, as shown in FIG. 2A, or may be lowered as shown in FIG. 2B. The range of the maximum rotation angle of the armrest 19 is determined according to the shape of the cam operation hole 23z to be described later.

The camshaft 27a is a support shaft parallel to the hinge shaft 21 and is positioned opposite the free end of the armrest 19 with the camshaft 27a therebetween.

That is, as shown in FIGS. 2A and 2B, when the armrest 19 is lowered, the camshaft 27a is raised, and when the armrest 19 is raised, the camshaft 27a is lowered.

The cam 27 fitted to the camshaft 27a takes an elliptical shape or a diamond shape and is rotatable while being supported by the camshaft 27a. In particular, assuming that the cam 27 is an ellipse, the maximum length in the major axis direction is larger than the interval between the first and second support jaws 23a and 23b, and the maximum length in the minor axis direction is the first and second support jaws 23a and 23b ).

Therefore, when the cam 27 is set up, the cam 27 can not pass between the first and second support protrusions 23a and 23b, and when the cam 27 is laid, the first and second support protrusions 23a and 23b You can pass.

The state in which the long axis of the cam 27 extends vertically so that the cam 27 can not pass between the first and second support pins 23a and 23b is referred to as A state and the cam 27 Is allowed to pass through the first and second support jaws 23a and 23b is referred to as a B state.

1, the cam 27 is caught by the first and second supporting protrusions 23a and 23b and is in a state in which it can not move in the direction of the arrow a, that is, a state in which the armrest 19 is fixed so as not to descend Called steady state.

The shape of the armrests 19 may vary widely according to the embodiment, and may be bent so as to have an angle of obtuse angle as shown in the figure.

On the other hand, the pivot head 23 is an original plate having a predetermined thickness and a diameter, and is fixed to the seat frame 17 via the hinge shaft 21.

That is, the pivot head 23 is coupled to the side portion of the seat frame 17 via the hinge shaft 21.

The hinge shaft 21 is fixed to the center of the pivot head 23.

It is a matter of course that the pivot head 23 remains fixed in place regardless of the rotation of the armrest 19.

Further, the pivot head 23 is formed with a cam engagement hole 23z of a somewhat complicated shape. The cam actuating hole 23z is a hole for receiving the cam 27 therein and pushes the cam 27 to the inward surface thereof so that the cam 27 rotates counterclockwise Or the cam 27 is fixed.

In the cam actuating hole 23z, first and second support protrusions 23a and 23b are formed in a substantially central portion of the inner region. The first and second support protrusions 23a and 23b are in contact with upper and lower ends of the cam 27 in the raised state, that is, as shown in FIG. 1, preventing the cam 27 from escaping therebetween.

The first stop groove 23d is located on the left side of the first and second support protrusions 23a and 23b. The first stop groove 23d is a space for receiving the approaching cam 27 by rotating the armrest 19 upward in the direction of arrow u, as shown in Fig.

The first stop groove 23d serves as a stopper for preventing the cam 27 from moving further in a state where the cam 27 is accommodated and also serves as a stopper in the state A (together with the cam groove rim 23c to be described later) Thereby rotating the cam 27 in the B-state. That is, the cam 27 engaged with the first and second support protrusions 23a and 23b enters the first stop groove 23d and rotates counterclockwise to be embedded in the first stop groove 23d.

In addition, a cam knuckle portion 23c is positioned between the first stop groove 23d and the second support jaw 23b.

The cam knuckle portion 23c is a latching jaw portion opposed to the second supporting jaw 23b and engages the lower portion of the cam 27 moving toward the first stop groove 23d to turn the cam 27 counterclockwise The giver plays a role. The cam 27 can be more smoothly inserted into the first stop groove 23d by the action of the cam groove rim portion 23c.

A second stop groove 23e is provided on the opposite side of the first stop groove 23d. The second stop groove 23e is a groove for receiving the cam 27 passing through the first and second support protrusions 23a and 23b in the state B when the armrest 19 is rotated upward as much as possible .

As shown in Fig. 2B, serves as a stopper which receives the cam 27 and prevents further movement.

The cam 27 pinched in the second stop groove 23e comes out of the second stop groove 23e as the armrest 19 is lifted up again and passes through the first and second support protrusions 23a and 23b It is caught by the cam groove rim portion 23c and rotates counterclockwise.

FIGS. 2 and 3 are views for sequentially illustrating the operation of the pivotally fixed armrest locking apparatus 100 for a vehicle seat shown in FIG.

First, the armrest 19 is rotated in the direction of the arrow u from the steady state shown in Fig. 1, for example, for the passenger to escape from the seat 11, to sit on the seat 11, As shown in FIG.

The cam 27 attached to the first and second supporting protrusions 23a and 23b moves toward the first stopping groove 23d in accordance with the rotation of the armrest 19 when the armrest 19 is rotated upward. During the process of moving to the first stop groove 23d, the cam groove portion 23c is first encountered and rotated in the counterclockwise direction as described above.

The upward rotation of the armrest 19 is continued until the cam 27 is completely inserted into the first stop groove 23d. As the depth of the first stop groove 23d is deeper, the maximum upward pivotable angle of the armrest 19 increases.

On the other hand, the armrest 19 can be lowered in this state. When the armrest 19 is lowered as much as possible, the armrest 19 descends below the seat 15. The armrests 19 are eliminated, so that they can be laid on, for example, a plurality of sheets attached to the side.

2A, when the armrest 19 is rotated downward, the cam 27 inserted in the first stop groove 23d is rotated in the state B to move the first and second support protrusions 23a and 23b And enters the inside of the second stop groove 23e. When the insertion of the cam 27 into the second stop groove 23e is completed, the downward rotation of the armrest 19 stops.

In order to return the armrest 19 to the normal state (the state shown in Fig. 1), the armrest 19 is once turned upward, and as shown in Fig. 3A, (23a, 23b), and is then rotated until it is caught by the cam groove rim portion (23c) and falls in the counterclockwise direction. In other words, the cam 27 is rotated until it is in the state B from the state B.

3A, when the cam 27 is caught by the cam groove rim portion 23c, the armrest 19 is pushed in the direction of the arrow d and the cam 27 is pressed against the first and second support protrusions 23a and 23b ). When the cam 27 is hung on the first and second support protrusions 23a and 23b, the state shown in FIG. 3B is reached, and the armrest 19 does not descend any more.

There is no fear that the armrest 19 will descend downward unless the camshaft 27a or the hinge shaft 21 is broken.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

100: Locking-fixed armrest locking device for vehicle seat of the present invention
11: seat 13: backrest
15: seat part 17: seat frame
19: armrest 21: hinge shaft
23: Pivot head 23a: First supporting chin
23b: a second supporting jaw 23c: a camgirl limb
23d: first stop groove 23e: second stop groove
23z: Cam operating hole 27: Cam
27a: camshaft

Claims (4)

A locking-type fixed armrest locking apparatus (100) for a vehicle seat,

And is attached to an armrest 19 that is rotatably mounted on a side portion of a seat frame 17 constituting a vehicle seat 11 via a hinge shaft 21. The seat frame 17 is positioned at a position spaced apart from the hinge shaft 21 by a predetermined distance A cam (27) rotatably supported by a camshaft (27a) parallel to the hinge shaft (21);
A pivotal head having a center of the hinge shaft 21 and formed with a cam actuating hole 23z for accommodating the cam 27 in the inner region, 23;
Inside the cam working hole 23z,
The first and second support protrusions 23a and 23b which are separated from each other to prevent the cam 27 from moving in one direction and prevent the armrest 19 from descending in the normal position of the armrest 19,
A first stop groove (not shown) for receiving the cam 27 which moves away from the first and second support protrusions 23a and 23b as the armrest 19 is raised and blocks the movement of the cam 27, 23d,
The armrest 19 is positioned on the opposite side of the first stopping groove 23d with the first and second support protrusions 23a and 23b interposed therebetween and the lower armrest 19 is lowered again so that the first stopping groove 23d And a second stop groove 23e for receiving the cam 27 passing between the first and second support protrusions 23a and 23b to block further movement of the cam 27 is formed. Fixed armrest locking device for seat (100). The method according to claim 1,
On the side portions of the first and second support jaws (23a, 23b)
The cam 27 which has passed between the first and second support protrusions 23a and 23b comes out of the second retaining groove 23e by the first and second support protrusions 23a and 23b Further comprising a cam knuckle portion (23c) for engaging and rotating the cam (27) so that the cam knuckle portion (23a, 23b) can be engaged again. 3. The method of claim 2,
The cam (27)
Is locked by the first and second support protrusions (23a, 23b) as the armrest (19) is lowered in a state rotated by the cam groove rim portion (23c) 100). The method according to claim 1,
The seat 11 includes a seat portion 15 for supporting the buttocks and a back portion 13 for supporting the back,
The maximum angle between the first and second stop grooves (23d, 23e) about the hinge shaft (21) is not less than the minimum angle between the backrest (23) and the seat (15) Fixed armrest locking device for seat (100).

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