JPS628771Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a headrest device for a vehicle seat.

In conventional vehicle seats, a separate headrest is provided above the seatback, and this headrest can be moved up and down and rotated forward and backward relative to the seatback, so that the attachment state of the headrest can be adjusted according to the body shape of the person sitting. There is something. The mounting structure of the headrest on this seat is generally as follows.

That is, the headrest is attached and supported to the column via a support member so that it can freely rotate back and forth, the said column is inserted into the seat bag, and the headrest is attached and supported to the seat bag frame via a guide member so that it can freely slide up and down, and this guide member A locking mechanism is provided inside the seat bag to lock the seat and the support. The locking mechanism is configured to be released from the locked state by an operating member protruding from the upper surface of the seat bag.

In conventional seats with the structure described above, a mechanism for adjusting the attachment state of the headrest and its accompanying components are provided dispersedly within both the headrest and the seat back, which improves operability and ease of use when adjusting the headrest. The sheet was poorly manufactured.

The present invention was developed in view of these circumstances, and its purpose is to provide a simple structure in which a mechanism for adjusting the vertical position and longitudinal inclination of the headrest can be centrally provided within the headrest. The purpose is to improve the operability when adjusting the headrest and the manufacturing efficiency of the seat.

That is, in the present invention, the headrest is attached and supported via a guide member to a column fixed to the seatback frame so that it can freely move up and down and rotate forward and backward, and the guide member has both the guiding function and the supporting function of the headrest. A locking member for locking the guide member to the support column is inserted into the guide member, and the locking state of the locking member is released by an operating member exposed on the side surface of the headrest.

An example of the implementation of the present invention will be described with reference to the drawings. FIG. 1 shows the appearance of a vehicle seat, in which a is a seat back and b is a headrest.

As shown in FIG. 5, the seat back a maintains its rigidity by a seat back frame 1 made of pipe material, and a support column 2 is fixed to the upper edge of the frame 1 by welding or the like.

The support column 2 is for supporting the headrest b and is made of a metal strip having a predetermined rigidity and strength, and is inserted into the headrest b so as to protrude from the upper surface of the seat back a.

As shown in FIGS. 2 to 4, the headrest b is constructed by providing a cushion material 4 on the outside of a sheet metal frame 3, covering the cushion material 4 with a skin 5, and moving it up and down to the support column 2 via a guide member 6. It is mounted and supported so that it can freely rotate forward and backward.

The guide member 6 is made of synthetic resin material,
A guide tube 8 is vertically slidably fitted into the support column 2 through a guide hole 7 in the middle thereof, and extends laterally in communication with both left and right sides of the guide hole 7.
is provided.

The guide tube 8 enlarges the hole 7 at the portion where it intersects with the guide hole 7, and a headrest b is attached and supported at both ends via holders 9 made of synthetic resin.

The holder 9 is located on both sides of the sheet metal frame 3 of the headrest b, and has a cut portion connected to the fitting portion with the guide tube 8 and is attached to the frame 3 via a through bolt 10, and the bolt 10 is tightened. It is rotatable with respect to the guide tube 8 with a predetermined frictional resistance depending on the force.

In addition, the guide member 6 is placed inside the guide tube 8.
A locking member 11 for locking is inserted and is mounted and supported so as to be slidable in the axial direction.

The locking member 11 is made of a band plate made of synthetic resin, and is fitted into the support 2 passing through the guide hole 7 of the guide member 6 through the locking hole 12 in the middle part of the locking member 11.
One side edge of the support column 2 is adapted to be engaged with a plurality of notches 13 provided on one side of the support column 2 at appropriate intervals.

One end of the locking member 11 sandwiching the locking hole 12 is supported by a pin 15 on the guide tube 8 via an elongated hole 14, and the other end is connected to an operating member 16 with a pin 17.

Therefore, the locking member 11 slides within the elongated hole 14, and the locking hole 12 engages and disengages from the notch 13 of the support column 2.

Furthermore, the locking member 11 is biased by a spring 18 to maintain its locked state.

One end of the spring 18 is locked in the middle part of the guide tube 8 via a step etc., and the other end is locked in the end surface of the operating member 16, and the locking member 11 is moved to the right side in FIG. energize.

The operating member 16 is for releasing the locked state of the locking member 11, and its operating knob 19 is exposed on one left and right side of the headrest b.

In the headrest device of this embodiment configured as described above, as shown in FIG.
1 is released.

Then, in this state, by moving the headrest b vertically to a desired position and then releasing your finger from the operating member 16, the locking member 11 is activated by the spring 18.
The headrest b is biased by and slides and is locked to the support column 2, and the headrest b is fixed in the above position.

Further, by rotating the headrest b back and forth around the guide tube 8 as shown by the two-dot chain line in FIG. 4, the inclination of the headrest b in the front and back direction with respect to the seat back a can be adjusted.

The inclination of the headrest b after adjustment is maintained by the frictional resistance of the holder 9 against the guide tube 8.

As explained above, this invention has a headrest,
It is attached and supported via a guide member to a column fixed to the seat back frame so that it can move up and down and rotate forward and backward. A locking member is inserted to lock the headrest to the support column, and the locking state of the locking member is released by an operating member exposed on the side surface of the headrest.

Therefore, a mechanism for adjusting the vertical position and longitudinal inclination of the headrest can be centrally provided in the headrest with a simple configuration, and
It is possible to improve the operability when adjusting the headrest and the manufacturability of the seat.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the external appearance of a vehicle seat equipped with the device of the present invention, Fig. 2 is a longitudinal sectional front view of the headrest device, Fig. 3 is a cross-sectional plan view thereof, and Fig. 4 is a 3rd sectional view of the headrest device.
Fig. 5 is an exploded perspective view, Fig. 6 is a sectional view taken along the line -
The figure is a longitudinal sectional front view showing a state in which the headrest is movable up and down. In the figure, a... Seat back, b... Head rest, 1... Seat back frame, 2... Support column, 6... Guide member, 7... Guide hole, 8...
Guide tube, 9... Holder, 11... Locking member, 1
6...Operation member.

Claims (1)

[Scope of utility model registration request] In a vehicle seat equipped with a separate headrest above the seatback, the headrest is attached and supported via a guide member to a column that is fixed to the seatback frame and protrudes from the upper surface of the seatback so as to be freely movable up and down and rotatable back and forth. , the guide member is vertically slidably fitted to the column in the headrest through the guide hole, and has a guide tube that extends laterally and communicates orthogonally with both left and right sides of the guide hole. The headrest is mounted and supported through a holder that is rotatably fitted with a predetermined frictional resistance, and a locking member that is fitted and locked to the column that passes through the guide hole is inserted into the guide tube. A headrest device for a vehicle seat, which is slidably mounted and supported on a headrest, an operating member for releasing the locked state of the member is connected to one end of the locking member, and the operating member is exposed on one left and right side of the headrest. .