JPH0618535Y2 - Headrest support structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention comprises a stay holder that is fitted and assembled into a holder bracket or the like provided on the upper end side of a seat back or the like to support a headrest stay so that it can move up and down. The present invention relates to improvement of a headrest support structure.

[Conventional technology]

Generally, in a vehicle seat or the like, a headrest that supports a seated person's head from the back side is provided at the upper end of the seatback so as to be vertically movable via the headrest stay. That is, in this type of headrest 1, as is apparent from FIG. 5, the left and right stay portions 2a and 2b of the headrest stay 2 hung from the main body portion 1a are attached to the seatback frame at the upper end side of the seatback 3 It is supported so as to be vertically movable by being fitted and retained in stay holders 6 and 6 made of resin or the like which are fitted and retained in cylindrical holder brackets 5 and 5 provided in 4 or the like. The left and right stay portions 2a and 2b are inserted into and removed from the stay holders 6 and 6 to adjust the height position in the vertical direction, and at the same time, at least one of the holders 6 and 6 is locked with a lock claw or the like. A structure that can be locked and fixed at an appropriate position by a mechanism (not shown) has been generally adopted.

[Problems to be solved by the device]

By the way, according to the conventional support structure for the headrest 1 as described above, the left and right stay portions 2a, 2a of the headrest stay 2 are simply inserted into the stay holders 6, 6 assembled to the holder brackets 5, 5 on the seat back 3 side. 2b is inserted and held, and these stay portions 2a and 2b are
A lock mechanism for locking and holding the holders 6 and 6 is required. And in such a configuration,
Due to the existence of the lock mechanism, the number of components is increased, and a large exposed portion is exposed on the seat surface.Besides, a protruding portion such as an operation knob is required, which is unattractive and lacks in design. Was causing problems.

Further, since it is necessary to move the headrest main body 1a up and down while operating the operation knob of the lock mechanism attached to a part of the stay holders 6 and 6 described above,
There is also a problem that the work of adjusting the height of the headrest 1 in the vertical direction becomes troublesome, and it is desired to take some measures to eliminate such a problem.

[Means for Solving the Problems]

In order to meet such a demand, the headrest support structure according to the present invention has a headrest stay having a plurality of steps of stopper grooves having a substantially U-shaped cross section in the longitudinal direction, so that the stay is fixed at a predetermined position in the longitudinal direction. A stay holder for locking and holding is provided, and the stay holder has a head portion on one end side of a body portion that is fitted and held in a holder bracket fixed to the attached portion side, and the head portion is an outer portion. There is a knob plate member for lock release operation, which is assembled so as to be able to be pushed in against the biasing means on the frame portion and inside thereof, and the inside lower portion of the knob plate member has an inside from the stay fitting insertion opening. A locking claw that is inserted into a stopper groove having an approximately U-shaped cross section of the stay to be inserted is pivotally supported by a pivot pin, and a stopper is formed at the inner upper end of the body portion, and the locking is performed by the stopper. Below the nail When the knob plate member is pushed inside the holder, the locking claws rotate upward about the pivot pin, and the locking claws are moved from the stopper groove having a substantially U-shaped cross section. The tip is pulled out, and the locked state by the locking claw is released.

[Operation] According to the present invention, when moving the headrest up and down, the headrest stay is inserted into the inside of the lower part of the knob plate member inside the head holder of the stay holder that holds the left and right stay parts from the stay fitting opening. The retaining claw that is engaged with a stopper groove having an approximately U-shaped cross section of the stay to be supported is pivotally supported by a pivot pin, and a stopper is formed at the inner upper end of the body portion. When the downward movement is restricted and the knob plate member is pushed inside the holder, the locking claws rotate upward about the pivot pin and lock in the stopper groove with a generally U-shaped cross section. Since the tip of the pawl comes out and the locking state by the locking pawl is released, the stay can be inserted and removed to easily and appropriately adjust the height of the headrest, and the pushing operation at a predetermined position. When the operation is released, the knob plate member is returned to the original state by the biasing means, and the locking claw can engage and hold the arbitrary stopper grooves of the left and right stay portions.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

1 to 3 show an embodiment of a headrest support structure according to the present invention. In these figures, the same or corresponding parts as in FIG. Detailed description is omitted.

Now, according to the present invention, as described above, in the support structure of the headrest 1 supported up and down on the upper end of the seat back 3 which is the attached portion, as shown in FIGS. By fitting and inserting the left and right stay portions 2a, 2b of the headrest stay 2 having a plurality of stopper grooves 11 having a substantially U-shaped cross section in the longitudinal direction, the respective stay portions 2a, 2b are provided at predetermined positions in the longitudinal direction. A stay holder 10 made of synthetic resin or the like for locking and holding is provided, and a stay holder head 12 provided on one end side of a body portion 10a fitted and held in the holder bracket 5 is provided with a tubular outer frame portion 12a. Biasing means 13 (see FIG. 2 etc.) inside thereof
And a tubular knob plate member 14 for unlocking operation, which is assembled in a fitted state so as to be able to be pushed in against
Inside the knob plate member 14, the base ends of the locking claws 16 that are inserted into the arbitrary stopper grooves 11 of the left and right stay portions 2a and 2b inserted into the stay fitting insertion opening 15 are rotated. It is characterized in that it is pivotally supported in a possible state, and that when the tubular knob plate member 14 is pushed into the inside of the stay holder 10, the locked state by the tip of the locking claw 16 is released. is doing.

The base end of the locking claw 16 is pivotally supported by the pivot pin 16a on the lower end of the tubular portion of the knob plate member 14, and the locking projection 14a is formed on the outer side of the tubular portion of the knob plate member 14. The locking projection 14a is hooked on the step formed inside the outer frame 12a to prevent the knob plate member 14 from coming off.

A stopper 18 is formed on the inner upper end of the body portion 10a of the stay holder 10 so that the locking claw 16 maintains a horizontal state and the locking claw 16 does not move downward. The stay portions 2a and 2b are configured to hold the locked state downward.

According to such a configuration, when the headrest 1 is moved up and down, first, when the headrest 1 is moved downward, the knob plate inside the head portion 12 of the stay holder 10 that holds the left and right stay portions 2a and 2b of the headrest stay 2. By simply pushing in the member 14, the locking claw 16
Can be rotated around the pivot pin 16a, the locked state by the locking claw 16 in the stay holder 10 is released, the stay portions 2a, 2b can be moved downward, and the height of the headrest 1 can be increased. Adjustment can be performed easily and appropriately, and if the pushing operation is released at a predetermined location,
The knob plate member 14 is returned to the original state by the biasing means 13, and the locking claw 16 can engage and hold the arbitrary stopper groove 11 of the left and right stay portions 2a and 2b.

Further, when the headrest 1 is moved upward from the locked state shown in FIG. 2, it is only necessary to push the headrest 1 upward. That is, the left and right stay portions 2a, 2
When b is moved upward, the locking claw 16 is rotated upward around the pivot pin 16a, the tip of the locking claw 16 is pulled out from the stopper groove 11 having a substantially U-shaped cross section, and the locked state is obtained. It is canceled.

According to such a configuration, the stay holder 1 has a simple and inexpensive configuration with a small number of constituent parts.
Knob plate member 14 exposed on the surface of the head 12 of 0
Is used as a lock releasing operation means, the lock can be released very easily and appropriately by a simple pushing operation, the stay portions 2a and 2b can be locked at predetermined positions, and the portion protruding to the outside as in the prior art. The stay holder head 12 can be made to have a minimum thickness, and the protruding portion to the outside can be made to have a thin structure with a minimum necessary thickness, and the appearance shape is excellent in terms of designability and the like. It has the effect of being able to

Further, in such a configuration, even if the distance between the upper end of the seat back 3 and the headrest 1 is small, there is an advantage that the headrest 1 can be easily adjusted up and down by a simple pushing operation, Further, when the headrest 1 is moved upward, it is not necessary to push the knob plate member 14 of the stay holder head portion 12 downward, and the movement can be adjusted by pushing the headrest 1 upward.

FIG. 4 shows another embodiment of the present invention. In this embodiment, the left and right stay portions 2 of the headrest stay 2 are shown.
It has a shape having a head 12 such as a rectangular shape formed by integrally connecting the body parts 10a and 10a holding a and 2b, and locks on both left and right sides can be performed in conjunction with each other. It is excellent and has the advantages that the number of constituent parts can be reduced and the assembling property can be improved, etc., but other than that, it has the same effect as the above-mentioned embodiment, and its detailed description is omitted. To do.

It should be noted that the present invention is not limited to the structure of the above-described embodiment, and the shape, structure, etc. of each part can be appropriately modified and changed as necessary. For example, in the above-described embodiment, the holder bracket 5 is not covered. Although the seat back frame 4 is illustrated as the attachment portion, the present invention is not limited to this, and the headrest stay 2 side is provided upright on the seat back 3 side, and the holder bracket 5 is provided on the frame side of the main body constituting the headrest 1. Various modifications such as providing and assembling the stay holder 10 to this may be considered.

[Effect of device]

As described above, according to the headrest support structure of the present invention, the lock release knob plate is assembled so that the head portion of the stay holder can be pushed against the biasing means at the outer frame portion and inside thereof. And a locking claw which is engaged with a stopper groove having a substantially U-shaped cross section of the stay inserted into the stay fitting insertion opening from the inside of the knob plate member. When the knob plate member is pivotally supported by a pin and a stopper is formed at the inner upper end of the body portion and the stopper claw restricts downward movement, and the knob plate member is pushed into the holder, The stop claw rotates upward about the pivot pin, the tip of the locking claw comes out of the stopper groove having a substantially U-shaped cross section, and the locked state by the locking claw is released. Therefore, it is easy and Despite the reasonable configuration, the knob plate member exposed on the head surface of the stay holder is used as the unlocking operation means, and the lock can be released very easily and appropriately by the simple pushing operation, and In addition to being able to lock at a predetermined position, it has various practically excellent effects, such as the ability to minimize the externally protruding parts as in the past, excellent design, etc., and a good appearance There is.

Further, according to the present invention, even if the distance between the upper end of the seat back and the headrest is narrow, there is an advantage that the headrest can be easily adjusted up and down by a simple pushing operation.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view showing a relationship between a stay holder and a stay portion showing an embodiment of a headrest support structure according to the present invention, and FIGS. 2 and 3 are operation explanatory views showing a main portion in section. FIG. 4 is a schematic perspective view showing another embodiment of the present invention, and FIG. 5 is a schematic perspective view for explaining a suitable headrest support structure to which the present invention is applied. In the figure, 1 ... Headrest, 2 ... Headrest stays, 2a, 2b ... Left and right stay parts, 3 ... Seat back, 4 ... Seat back frame (attached part), 5, 5
...... Holder bracket, 10 ...... Stay holder, 10a
...... Holder body, 11 ...... Stopper groove, 12 ...... Holder head, 13 ...... Biasing means, 14 ...... Knob plate member for total operation of unlocking, 15 ...... Stay fitting insertion opening, 16 ...
… Locking claws, 16a… Pivot pins, 18… Stoppers.

Claims (1)

[Scope of utility model registration request] 1. A stay holder is provided which holds a stay at a predetermined position in the longitudinal direction by inserting and inserting a headrest stay having a plurality of stages of stopper grooves having a substantially U-shaped cross section in the longitudinal direction. Has a head portion on one end side of a body portion that is fitted and held in a holder bracket fixed to the attached portion side, and the head portion resists the outer frame portion and the biasing means inside thereof. Has a knob plate member for unlocking operation that is assembled so that it can be pushed in, and an arbitrary U-shaped cross section of the stay inserted into the inside from the stay fitting insertion opening at the inner lower part of the knob plate member. The engaging claw that is engaged with the stopper groove of the knob is pivotally supported by a pivot pin, and a stopper is formed at the inner upper end of the body portion. The stopper restricts the downward movement of the engaging claw, The plate member is inside the holder When it is pushed in, the locking claw rotates upward around the pivot pin, the tip of the locking claw comes out from the stopper groove with a roughly U-shaped cross section, and the locked state by the locking claw is released. A headrest support structure characterized by being configured as follows.