JPH047802Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> This invention relates to a vehicle seat, particularly a seat equipped with an armrest.

<Prior Art> Conventional seats of this type have an armrest that is rotatably arranged along the side of the seat back so that the armrest is held horizontally with respect to the seat cushion when in use. be.
The vehicle is configured so that the occupant can rest their elbows on this armrest to achieve a comfortable ride.
Additionally, the armrest is rotated and fixed to a position along the seat back so as to be perpendicular to the seat cushion, making it easier for passengers to get on and off the vehicle.

In addition, some seats have an armrest that can be slid vertically on the side of the seat back so that the mounting position of the armrest matches the position of the occupant's elbow when the occupant assumes a natural sitting posture. Are known.

<<Problems to be solved by the invention>> As described above, examples of conventional vehicle seats with armrests in which the armrests are rotatably or slidably provided on the side of the seat back are known;
The armrests only functioned as armrests.

Therefore, an object of this invention is to provide a vehicle seat with an armrest that has additional functions.

<Means for Solving the Problems> In order to achieve this purpose, the vehicle seat of this invention includes an armrest that is vertically slidable and rotatable on the side of the seat back, and an armrest that is provided inside the armrest. It is characterized by comprising an inflatable support section provided at the.

<<Operation>> By expanding the support section provided inside the armrest, the thighs and lumbar regions of the seated occupant can be supported, so the armrest can also function as a side port.

<<Example>> Hereinafter, a positional example of this invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the vehicle seat 1 of this invention includes a seat cushion 2 and a seat back 3, and the seat back 3 is adjusted to tilt relative to the seat cushion 2 by a reclining device (not shown). possible. Also,
Armrests 4 are provided on both sides 3a of the seat back 3 and are vertically slidable and rotatable. As shown in detail in FIG. 3, this armrest 4 includes a main body 4a and a notch 5 of the main body 4a.
The base end portion of the main body portion 4a is connected to the side portion 3a of the seat back 3 via an engagement member 7, which is a fixed shaft.
It is attached to a slide rail 8 fixed to , so that it can rotate upward and slide in the vertical direction.

The armrest main body 4a includes a cushion material 10 similar to the seat cushion structure and a trim cover 11 on the outer periphery of an L-shaped armrest frame 9.
It consists of a structure coated with. And the main body part 4
Separate support part 4b with cutout part 5 provided inside a
By housing the armrest 4, an integrated armrest 4 is formed. An engaging member 7 is welded to one end of the frame 9 toward the seat back side surface 3a. As shown in FIG.
is T due to the shaft portion 7a and the rectangular locking portion 7b.
The plate spring 12 is welded to both ends of the short side of the locking part 7b. As shown in FIGS. 5 and 6, the engagement tool 7 is fixed so that the long side of the locking portion 7b is horizontal along the frame 9. The engagement tool 7 is attached to the side portion 3 of the seat bag 3.
It engages with a slide rail 8 attached vertically to the lower part a, and is slid up and down along this slide groove. As shown in FIG. 7, the slide rail 8 is formed with a slide groove 8a having a spacing slightly wider than the outer diameter of the shaft portion 7a of the engagement tool 7, and is engaged with the slide groove 8a on the back side. Stop part 7
A stopper 13 is formed to restrict the rotation of b. A plurality of stoppers 13 are formed at equal intervals in the vertical direction of the slide rail 8. This interval is slightly narrower than the length of the long side of the locking part 7b, and when the locking part 7b is in a substantially horizontal state, the lower surface of the right stopper 13 is placed on the upper right side of the locking part 7b with the slide groove 8a as a boundary. , while the left stopper 13
The upper surface hits the upper left corner of the locking portion 7b, restricting the rotation of the locking portion 7b almost horizontally, and rotating the locking portion 7b upward approximately 90 degrees from this restricted state around the shaft portion 7a. A space for this purpose is provided between each of the upper and lower stoppers 13. Therefore, when the armrest 4 is rotated to stand up, the engagement tool 7 also follows this movement, and the locking part 7b becomes the upright state, is released from the stopper 13, and the engagement tool 7 is moved into the slide groove 8a. It can be operated by sliding up and down. By engaging the locking portion 7b with the stopper 13 at an arbitrary height position and tilting it toward the seat cushion 2, the locking portion 7b is regulated by the stopper 13 even when the armrest 4 receives the load of the occupant. It can function as the original armrest 4.

Next, details of the expansion/contraction adjustment device 6 will be explained with reference to FIG. 2.

As shown in the figure, the support section 4b is connected to the main body section 4.
Similarly to a, cushion material 15 is placed around the outer periphery of the frame 14.
and a trim cover 16, and mounting brackets 17 are welded to two locations on the side surface of the frame 14, approximately at the center and at the rear, so as to protrude from the trim cover 16 toward the main body 4a. There is. The bracket 17 is attached to the main body 4a.
The pistons 18 of the expansion/contraction adjusting devices 6 are rotatably attached to the upper ends of the pistons 18 provided at the center and rear portions of the interior, and are prevented from coming off by clasps 19.

The expansion/contraction adjustment device 6 includes a cylinder 20 and a piston 18 that freely slides within the cylinder 20.
, a spring 21 that always pushes down the piston 18 to the inner bottom surface of the cylinder 20, and a support portion 4b on one end side.
The other end side is attached to the notch 5 of the main body 4a.
The cylinder 20 consists of a bellows-shaped cover body 22 that is attached inside and covers the piston 18 and the spring 21 that protrude from the main body part 4a, and the cylinder 20 has an opening that opens from the notch 5 of the main body part 4a. It is fixed to the frame 9 via a bracket 23. A sub-tank 24 is connected to one end of the cylinder 20 via an air tube, and one end of an air tube 25 is connected to the sub-tank 24. The other end of this air tube 25 is pulled out to the side of the main body 4a and is connected to an egg-shaped manual pump 26.
It is connected to the. One end of the spring 21 is attached to the bracket 17 of the support portion 4b by a coil spring or the like, and the other end is attached to the opening of the cylinder 20.

Next, the function of the armrest 4 of this invention will be explained.

As shown in FIG. 1, in order to align the armrest 4 with the predetermined position of the side 3a of the seat back 3, that is, with the position of the passenger's elbow when the passenger assumes a natural sitting posture, as shown in FIG. First, the armrest 4 is rotated upward so that the engagement tool 7 can freely slide within the slide rail 8. and,
By aligning the position and tilting the armrest 4 forward until rotation is restricted by the stopper 13, the armrest 4 can be aligned with the position of the passenger's elbow as shown in FIG. When the armrest 4 supports the waist of a seated occupant, a manual pump is used to send air into the cylinder 20 to press the piston 18 inward. To release the pressure, the exhaust valve of the manual pump 26 may be opened to exhaust air from the cylinder 20, and the force of the spring 21 may be used to move the piston 18 outward. Further, when the armrest 4 supports the thighs of the seated occupant, the armrest 4 may be moved to the lowest position and pressurized using the manual pump 26 in the same manner. In the case of this embodiment, since the expansion/contraction adjustment devices 6 are arranged at two locations, the support portion 4b is not only held horizontally with respect to the main body portion 4a as shown in FIG. 10, but also held at an acute angle. It can be adapted to accommodate the physiques and preferences of most occupants.

Note that the embodiment merely shows a preferable example, and various other modifications are possible. For example, although the expansion/deflation adjustment device 6 uses a manual pump 26 to take in and take out air, it may be configured so that the pump is driven by a motor. Additionally, a known configuration may be added so that when the seat back 3 is reclined relative to the seat cushion 2, the armrest 4 is always kept in a horizontal position.

<<Effects of the invention>> As explained above, the vehicle seat of this invention has an armrest that is vertically slidable and rotatable, and an inflatable support part is provided inside the armrest. Since the armrest can be adjusted to any height and can support the thighs and lumbar regions of the seated occupant, it also has a side support function, increasing the added value of the armrest.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the vehicle seat of this invention, Fig. 2 is a side view of the seat, Fig. 3 is a sectional view showing the armrest of the seat, and Fig. 4 is a fixation of the armrest. FIG. 5 is a schematic plan sectional view showing the armrest of the same seat, FIG. 6 is a schematic front sectional view showing the armrest, and FIG. 7 is the engaging device inside the slide rail. Fig. 8 is a side view showing the armrest of the same seat being rotated upward, Fig. 9 is a front view showing the armrest of the seat being rotated upward, and Fig. 9 is a front view showing the armrest of the same seat being rotated upward. FIG. 10 is a side view showing a state in which the armrest of the seat is adjusted to expand and contract inward. 1...vehicle seat, 3...seat bag, 3
a...Side surface, 4...Armrest, 4b...Support portion, 6...Inflation/contraction adjustment device, 7...Engagement tool.

Claims (1)

[Scope of utility model registration request] 1. A vehicle seat comprising: an armrest that is vertically slidable and rotatable on a side surface of a seat back; and an inflatable support section that is provided inside the armrest.