JPH0242208Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an armrest unlocking device that is rotatably provided on the side of an automobile seat.

(Prior art) Conventionally, as a lock release device for this type of armrest, a rotary cylinder fixed to the armrest body side is freely inserted and supported in a fixed cylinder fixed to the seat side, and these rotary cylinders and fixed cylinders are connected. A spiral spring is tightly fitted on the outer peripheral surface of the spring, spanning between the two.
The compressive force of the spring against the rotary cylinder and the fixed cylinder prevents free rotation of the rotary cylinder with respect to the fixed cylinder, locking the armrest main body, and locking one end of the spring to the armrest main body. On the other hand, an operating lever is swingably supported on the armrest main body, and the lever and the other end of the spring are connected via a link, and as the lever is oscillated, the spring is moved via the link. An armrest unlocking device has been proposed in which the armrest main body is unlocked by releasing the fixation of the rotating barrel from the fixed barrel by expanding the diameter outward in the radial direction.

(Problems to be Solved by the Invention) By the way, in the lock release device as described above, the link that operates the spiral spring in the release direction in response to the operation of the operating lever is
Since the link is only hung between one end of the spiral spring and the operating lever, there is a problem in that the link rattles when the vehicle is running and generates abnormal noise.

In order to prevent the link from wobbling, it is conceivable to bring the link into elastic contact with the armrest main body, but in this case, the contact resistance between the link and the armrest main body may smooth the operation of the link. Therefore, a new problem arises in that the lock release operation using the operating lever lacks smoothness.

The present invention was devised in view of the above-mentioned problems, and its purpose is to improve the smooth operation of the link by making simple changes to the components of the lock release device. To reliably prevent the link from wobbling without damaging the link.

(Means for Solving the Problems) The lock release device for an armrest for an automobile according to the present invention is constructed as shown in FIG.
is rotatably supported on a fixed cylinder 4 fixed to the seat side, and between each of these cylinders 3 and 4, the rotary cylinder 3
A spring lock type locking mechanism 8 is provided to lock the armrest to the fixed tube 4, and an operating lever 9 is supported on the armrest main body 1 so as to be able to swing freely, while a link 10 is used to connect the lever 9 and the locking mechanism 8. In the lock release device, the armrest main body 1 and the armrest main body 1 are interlocked and connected through the link 10 and unlocked by the locking mechanism 8 through the link 10 by swinging operation of the lever 9.
A pair of bulging portions 1a and 12a that bulge toward the link 10 side are formed on the cover 12 to be assembled to the armrest main body 1, and the link 10 is formed by these bulging portions 1a and 12a. It is characterized by being held in place.

(Function) Thus, the link 10 is supported in a pinched manner by the respective bulges 1a and 12a provided on the armrest main body 1 and the cover 12 so as to face each other. This prevents any rattling and prevents the generation of abnormal noises.

(Example) The lock release device for an armrest for an automobile according to the present invention will be described below with reference to an example shown in the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a metal armrest body that is rotatably supported on the side of an automobile seat (not shown), and is formed into a roughly rectangular box shape. A support plate 2 is integrally attached to the inner surface of one side in the width direction, and a rotary cylinder 3 is integrally fixed to the support plate 2 facing laterally.

Reference numeral 4 denotes a fixed cylinder fixed to the seat side, into which the rotary cylinder 3 provided on the armrest main body 1 side is freely inserted and supported, and between each cylinder 3 and 4. A locking mechanism 8 is provided in the seat, and the locking mechanism 8 prevents the rotary barrel 3 from freely rotating with respect to the fixed barrel 4, thereby locking the armrest main body 1 in a predetermined position with respect to the seat. By releasing 8, the armrest main body 1 is allowed to rotate freely relative to the seat.

In the illustrated embodiment, the stationary cylinder 4 is formed with a small diameter stepped part 4a that can be loosely inserted into the rotating cylinder 3, and a large diameter stepped part 4b having approximately the same diameter as the outer diameter of the rotating cylinder 3. At the same time, a square shaft portion 4 is provided on the tip side of the small diameter stepped portion 4a.
c, and a lid body 4d is provided on the side of the large-diameter stepped portion 4a. The square shaft portion 4c is loosely inserted so as to protrude outward, and the square shaft portion 4c is inserted into the square hole 6a of the bracket 6 attached to the frame 5 of the seat, and in this state, the By penetrating and fixing the fixing bolt 7 inward of the bracket 6, the large-diameter stepped portion 4b of the fixing tube 4 is fixed.
is flush with the outer circumferential surface of the rotating cylinder 3,
The rotary cylinder 3 is rotatably supported by the fixed cylinder 4.

Further, a spiral spring 8 is used as the locking mechanism 8, and the spring 8 is attached to the rotating cylinder 3.
The large-diameter stepped portion 4b and the fixed cylinder 4 are tightly fitted into the outer circumferential surfaces of the fixed cylinder 4 so as to straddle them, and the compressive force of the spring 8 on the rotating cylinder 3 and the fixed cylinder 4 causes the fixed cylinder 4 to The armrest main body 1 is locked against the seat by preventing the rotary cylinder 3 from freely rotating against the seat.

Then, one winding end 8a of the spring 8 is locked to the support plate 2 via the locking metal fitting 11, and the operating lever 9 is attached to the side of the armrest main body 1 opposite to the rotary tube 3 so as to be able to swing freely. On the other hand, the lever 9 and the other winding end 8 of the spring 8
b are interlocked and connected via a link 10, and by pulling the other end 8b of the spring 8 via the link 10 as the lever 9 is swung, the spring 8 is expanded radially outward. diameter to release the compressive force of this spring 8 on the rotary cylinder 3, release the lock between the rotary cylinder 3 and the fixed cylinder 4, and allow the armrest main body 1 to freely rotate with respect to the seat. are doing.

Further, a box-shaped plastic cover 12 is fitted on the side portion of the armrest main body 1, and the armrest main body 1
The spiral spring 8, link 10, etc. provided in the main body are protected.

In the lock release device as described above, both the armrest main body 1 and the cover 12 fitted over the main body 1 are integrally formed with bulging portions 1a and 12a that bulge inward, respectively. Then, the armrest main body 1 of the cover 12
The link 10 is held between the tip surfaces of the bulging portions 1a and 12a when the link 10 is fitted into the holder.

Specifically, as is clear from FIG. 3, a bulge 1a is integrally formed on the side wall of the armrest main body 1 by embossing means, extending inwardly and abutting one side of the link 10. , a bulge 12a that abuts the other side surface of the link 10 is integrally formed on a side wall of the cover 12 at a location opposite to the bulge 1a, and each bulge 1a of the main body 1 and the cover 12 is , 12a to sandwich the link 10 to prevent the link 10 from wobbling.

In FIG. 1, reference numeral 13 denotes a spacer interposed between the armrest main body 1 and the seat-side bracket 6.

(Effects of the Invention) As explained above, in the armrest unlocking device for an automobile according to the present invention, both the armrest main body 1 and the cover 12 fitted onto the armrest main body 1 are provided with a locking device facing toward the link 10 side. Since a pair of bulging portions 1a and 12a are formed to face each other and the link 10 is sandwiched between the bulging portions 1a and 12a, the link 10 is held between the bulging portions 1a and 12a. This makes it possible to eliminate rattling and reliably prevent the occurrence of abnormal noise due to the link 10. Moreover, by sandwiching both sides of the link 10 between the bulges 1a and 12a, the rattling of the link 10 can be prevented. By doing so, the locking mechanism 8 can be smoothly released by the link 10 without interfering with the operation of the link 10.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing the unlocking device of the present invention, FIG. 2 is a sectional view of the same, and FIG. 3 is an enlarged vertical sectional view of the main parts. DESCRIPTION OF SYMBOLS 1...Armrest main body, 1a...Bulging part, 4...Fixed tube, 8...Lock mechanism, 9...Operation lever, 10...
Link, 12...cover, 12a...bulge.

Claims (1)

[Scope of utility model registration request] The armrest main body 1 is rotatably supported by a fixed cylinder 4 fixed to the seat, and a lock mechanism 8 is provided between the armrest main body 1 and the fixed cylinder 4 to lock the armrest main body 1 to the fixed cylinder 4.
The armrest main body 1 is provided with an operating lever 9 and a link 10 for transmitting the operation of the operating lever 9 to the locking mechanism 8 and releasing the lock by the locking mechanism 8. A pair of bulges 1 bulge toward the link 10 on the armrest body 1 and the cover 12 assembled to the armrest body 1.
a, 12a, and both bulges 1a, 12a are formed.
A lock release device for an armrest for an automobile, characterized in that the link 10 is held between the arms (a) of the armrest.