JPH0563355U - Headrest for seat - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a headrest that reliably supports the seated person's head in the left-right direction. A headrest main body 10a assembled to the left and right center portions of the top of the seatback, and a pair of left and right headrest auxiliary bodies 10b assembled to each side of the main body 10a so as to be rotatable in the front-rear direction. A seat headrest that includes a locking mechanism 10c that locks the auxiliary body 10b in a stepwise direction in the front-rear direction, and that supports the left-right direction by the auxiliary body 10b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat headrest.

[0002]

[Prior Art]

 The seat headrest (hereinafter sometimes simply referred to as the headrest) has a predetermined size in the left-right direction of the seat as shown in FIG. 9, and depending on the headrest, as shown by the arrows in FIGS. Some are configured to be able to move in the up-down direction, move in the front-rear direction, or rotate in the front-rear direction.

[0003]

[Problems to be solved by the device]

 However, since the left and right sides of the headrest are only configured to have a predetermined dimension as described above, the headrest does not have the function of supporting the head of the seated person on the left and right sides and the seated person It is not enough to rest, and the seating posture of the vehicle seat is not sufficiently stable when cornering or when there is a large amount of lateral swing. Therefore, the purpose of the present invention is to address these problems.

[0004]

[Means for Solving the Problems]

 The present invention is a headrest for a seat, which includes a headrest body that is assembled to the left and right central portions of the top of the seatback, and left and right bodies that are rotatably mounted in the front-rear direction on each side of the body. The present invention is characterized by including a pair of headrest auxiliary bodies and a lock mechanism that gradually locks the auxiliary bodies when the auxiliary body is rotated forward.

[0005]

[Operation and effect of the device]

 In the headrest having such a configuration, the headrest auxiliary body can be rotated in the front-rear direction to be locked at a desired position in front of the headrest main body, and the head of the seated person can be surely secured in the left-right direction by these auxiliary bodies. Can be supported by.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a headrest according to the present invention. The headrest is a headrest of a vehicle seat and includes a headrest body 10a and a pair of left and right headrest auxiliary bodies 10b. As shown in FIGS. 2 and 3, the headrest body 10a is a box-shaped body in which a rectangular frame 11 is integrated and is covered with a cushion pad 12, and is fixed to the upper portion of the stay 21. It is attached to the seat back 22 at 21. The headrest main body 10a is located at the approximate center of the top of the seatback 22. The headrest auxiliary body 10b is a box-shaped body in which a substantially rectangular frame body 13 is integrated and is covered with a cushion pad 14, and is attached to a side portion of the stay 21 via a locking mechanism 10c described later. ing.

As shown in FIGS. 3 to 8, the lock mechanism 10c includes a ratchet 15, a box-shaped support 16, a pole 17 and springs 18a and 18b fixed to the side of the stay 21, and the ratchet 15 is It also functions as a bracket for the locking mechanism 10c. The support body 16 is fixed to the inner surface of the frame body 13 constituting the headrest auxiliary body 10b and is attached to the ratchet 15 extending into the support body 16 so as to be rotatable in the front-rear direction via the first support pin 19a. ing. A first spring 18a is interposed between the ratchet 15 and the support body 16, and the support body 16 is always biased so as to be in a neutral state.

The pole 17 is rotatably supported by the support body 16 via a second support pin 19b, and is urged by the second spring 18b to be disengageably meshed with each meshing tooth of the ratchet 15. To do. FIG. 6 shows the meshing state of the ratchet 15 and the pole 17 in the non-rotating position of the headrest auxiliary body 10b, and FIG. 8 shows the meshing state of the headrest auxiliary body 10b and the meshing state of both of them 15 and 17 when the headrest auxiliary body 10b is returned to the non-rotating position.

When the headrest auxiliary body 10b is in the non-rotating position, the pole 17 is meshed with the tooth portion 15a at the rearmost end of the ratchet 15 as shown in FIG. 6 (a). In this case, the second spring 18b is located on one side with respect to the second support pin 19b, which is the pivot fulcrum of the pole 17, as shown in (b) of the figure, so that the pole 17 is always meshed with the ratchet 15. It is biased in the direction (arrow A direction). When the headrest auxiliary body 10b is sequentially rotated forward, the pole 17 repeatedly engages and disengages with each tooth of the ratchet 15 in a stepwise manner, and locks the headrest auxiliary body 10b when the rotation is stopped. The meshed state shown by the solid line in FIG. 7 is the meshed state at the maximum rotation position of the headrest auxiliary body 10b, and the pole 17 meshes with the most distal tooth portion 15b of the ratchet 15.

When the headrest auxiliary body 10b is further urged in the rotating direction in a state in which the headrest auxiliary body 10b is rotated to the most distal end, the pole 17 is flipped up by the most distal large tooth 15c of the ratchet 15 and is pushed by the stopper 19c. 7A, the second spring 18b is turned over and positioned on the other side of the second support pin 19b as shown by the two-dot chain line in FIG. 7A. During this time, the urging force of the first spring 18a on the support 16 is gradually increased, and when the pole 17 is separated from the ratchet 15, the support 16 is acted on by the action of the first spring 18a so that the arrow in FIG. It is urged in the B direction. For this reason, the headrest auxiliary body 10b returns to the original position, that is, the non-rotational position, and at the time of this return, as shown in FIG. Is re-engaged with the tooth gap 15a at the rearmost end of the ratchet 15 as shown by the two-dot chain line in the figure.

In the headrest thus configured, as shown in FIG. 1, the headrest body 10a is located substantially in the center of the seatback 22, and each headrest auxiliary body 10b is located on each side of the headrest body 10a. To do. By rotating these headrest auxiliary bodies 10b forward, the side portions of each headrest auxiliary body 10b can be pivoted and locked at desired positions in front of the headrest main body 10a. Each headrest auxiliary body 10b can reliably support the seat occupant's head in the left-right direction.

In the present embodiment, as a lock mechanism for the headrest auxiliary body 10b, the lock is automatically released when the headrest auxiliary body 10b is turned to the most distal end, and the headrest auxiliary body 10b is automatically released. Since the lock mechanism 10c that returns to the non-rotational position is employed, it is easy to adjust the rotational position of the headrest auxiliary body 10b.

[Brief description of drawings]

FIG. 1 is a perspective view of a headrest according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional plan view of the headrest.

FIG. 3 is a partial perspective view of each support member that constitutes the headrest.

FIG. 4 is a perspective view of a lock mechanism that constitutes the headrest.

5 is a vertical side view of the headrest in the direction of arrows 5-5 in FIG.

FIG. 6 is an operation explanatory view of the lock mechanism at the non-rotating position of the headrest auxiliary body in the headrest.

FIG. 7 is an explanatory view of the operation of the lock mechanism at the pivoting position of the headrest auxiliary body to the extreme end.

FIG. 8 is an operation explanatory view of the lock mechanism at the instant when the headrest auxiliary body returns to the non-rotational position.

FIG. 9 is a partial perspective view (a) and a side view showing a moving direction of a conventional headrest.

[Explanation of symbols]

10a ... Headrest main body, 10b ... Headrest auxiliary body, 10c ... Lock mechanism, 11, 13 ... Support body, 12,
14 ... Cushion pad, 15 ... Ratchet, 15a,
15b ... Between tooth portions, 15c, 15d ... Large teeth, 16 ... Support, 17 ... Pole, 18a, 18b ... Spring, 19
a, 19b ... Support pins.

Claims (1)

[Scope of utility model registration request] 1. A headrest body that is assembled to the left and right central portions of the top of the seatback, and a pair of left and right headrest auxiliary bodies that are assembled to each side of the body so as to be rotatable in the front-rear direction. A seat headrest having a lock mechanism that locks the auxiliary body in a stepwise manner when the auxiliary body rotates forward.