JPS6342844Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an inclination angle adjustment device for an automobile seat, and in particular, the inclination angle of a movable backrest of the seat is adjusted by a handle lever that is operated approximately in the width direction of the vehicle. be.

In the conventional device for adjusting the inclination angle of the movable backrest of a car seat according to the passenger's wishes, a handle lever that can be operated approximately vertically of the vehicle is provided in the space between the seat and the door. The inclination angle of the backrest was adjusted by moving it up and down. Therefore, there are cases where it is not possible to secure a space between the seat and the door to provide the handle lever, or where the handle lever is provided in that space, the operability may be poor.

Therefore, in such cases, it is possible to use a flexible cable to install a handle lever at a desired location away from the seat and operate it remotely, but this is not only more expensive than previous devices, but also
New space must be secured to route the flexible cables.

In view of the problems with the prior art, the purpose of the present invention is to provide a vehicle seat inclination angle adjustment in which the inclination angle of the seat's movable backrest can be adjusted using a handle lever that is operated approximately in the width direction of the vehicle. The goal is to provide equipment.

In order to achieve the above object, the present invention provides an arm having a first ratchet tooth, which is fixed to a movable backrest of a vehicle seat and rotates together with the backrest, and which meshes with the first ratchet tooth. a pawl lever having second ratchet teeth for preventing rotation of the arm and rotatably disposed near the rotation axis of the arm; and a pole lever substantially perpendicular to the rotation axis of the arm. A handle lever is rotatably supported on a shaft and can be operated substantially in the width direction of the vehicle against the biasing force of an elastic member, and a handle lever is rotatably connected to the rotation shaft of the arm. and a rotation plate connected to the handle lever, which rotates in a direction away from the rotation axis of the pole lever by the operating force of the handle lever when the handle lever is operated in a substantially width direction of the vehicle; a pressing member fixed to the rotating plate and pressing the pawl lever so that the second ratchet tooth meshes with the first ratchet tooth; and a pressing member that presses the pawl lever when the handle lever is operated in a substantially width direction of the vehicle. The rotation of the rotation plate causes the first ratchet tooth to engage the second ratchet tooth.
and a release member for rotating the pawl lever in a direction to release the pawl lever from engagement with the ratchet teeth.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Figures 1 to 5 show an embodiment of the present invention, and are a front view of the seat as seen from the side, a sectional view of the seat, a sectional view of the seat, a perspective view of the seat, and a sectional view of the seat, respectively. be. In the figure, 1 is a base fixed to the vehicle floor (not shown),
An arm 3, which is fixed to a side surface 40a of a movable backrest 40 shown in FIG. 4 and has ratchet teeth 3a carved in its lower end, is rotatably attached to a shaft 2 supported by the base 1. . On the other hand, a shaft 4 is also pivotally supported on the base 1, and a pole lever 5 is rotatably attached to the shaft 4. The pawl lever 5 is provided with ratchet teeth 5a that mesh with the ratchet teeth 3a. As can be seen from FIG. 3, the arm 3 and the pole lever 5 are located on the same plane, and a release plate 6 and a sub-release plate 7, which serve as rotating plates, are mounted on the shaft 2 so as to sandwich them. Each is rotatably attached.

Further, as shown in FIGS. 2 and 3, the pawl lever 5 has a hole 5b, the release plate 6 has a long hole 6a, and the small diameter shaft portion 8a of the roller 8 is fitted into the hole 5b. , the large diameter head 8b is loosely fitted into the elongated hole 6a. Furthermore, a roller 10 serving as a pressing member that is moved into and out of contact with the pawl lever 5 is rotatably attached to a shaft 9 that is supported by the release plate 6 and the sub-release plate 7.

Furthermore, as can be seen from FIG. 2, a shaft 11 is pivotally supported on the base 1, and a handle lever 12 is rotatably attached to the shaft 11. The operating end of the handle lever 12 is located in the gap 43 between the fixed backrest 41 of the seat and the cushion 42 of the seat, as shown in FIGS. 4 and 5, and the operating knob 12a is attached to the tip thereof. The knob 12a is protruded into the vehicle interior. This handle lever 12 is attached so as to be operated in the direction of arrow A, that is, in the approximate width direction of the vehicle. A locking portion 12b is provided at the other end of the handle lever 12.
(see FIG. 2), and the locking portion 12b has a pin 13 fixed to the sub-release plate 7.
is engaged, and the handle lever 12
The other end is always urged in the direction B' (see FIG. 2) by a spring 14. That is, the handle lever 12 is swingably supported on a shaft 11 that is substantially perpendicular to the shaft 2, which is the rotation axis of the arm 3, and is rotated against the biasing force of a spring 14 as an elastic member. It is provided so that it can be operated in the width direction.

Due to the spring force of this spring 14, the roller 10 supported by the sub-release plate 7 and the release plate 6 presses the pawl lever 5 upward at the position shown in FIG.
When not operating pole lever 5, always
ratchet tooth 5a of arm 3 and ratchet tooth 3 of arm 3
a meshes with each other to fix the inclination angle of the movable backrest 40 of the seat.

In this embodiment configured in this manner, when the handle lever 12 is operated in the direction of arrow A (see FIGS. 2 and 4), the pin 13 moves in the direction of arrow B (see FIG. 2) against the spring force of the spring 14. ) direction,
The sub-release plate 7 and the release plate 6 rotate counterclockwise in FIG. 1, and the roller 10 also moves counterclockwise. As the roller 10 moves counterclockwise, the long hole 6a of the release plate 6 also moves counterclockwise around the shaft 2, and the large diameter head 8a of the roller 8 is moved by the end surface of the long hole 6a in the thickness direction. moved downward.
That is, the elongated hole 6a and the roller 8 are configured as release members, and each plate 6, 7 is connected to the pole lever 5.
When the pole lever 5 rotates in a direction away from the shaft 4 (counterclockwise), the pole lever 5 rotates clockwise about the shaft 4. Then, the ratchet tooth 5a of the pawl lever 5 separates from the ratchet tooth 3a of the arm 3. At this time, when the movable backrest 40 is placed at a desired inclination angle and the handle lever 12 is released, the ratchet teeth 3a and 5a engage with each other due to the spring force of the spring 14, preventing the arm 3 from rotating. This makes it possible to adjust the inclination angle of the movable backrest 40.

In this embodiment, the movement of the locking portion 12b of the handle lever 12 that is operated in the approximate width direction of the vehicle is transmitted to the sub-release plate 7 and the release plate 6 via the pin 13, and the rotation of each plate is Although the ratchet tooth 5a of the pawl lever 5 is separated from the ratchet tooth 3a of the arm 3 by the movement, other methods are possible in which the movement of the lever in the horizontal direction with respect to the vehicle is converted into the movement in the vertical direction using a cam or the like. Of course, a conversion mechanism may also be used.

As explained above, according to the present invention, the movement of the handle lever operated in the approximate width direction of the vehicle is prevented by the rotation plate and the release member from rotating the arm fixed to the movable backrest. The inclination angle of the movable backrest of the seat is adjusted by converting the second ratchet tooth of the lever into a movement away from the first ratchet tooth of the arm, thereby reducing the space between the seat and the door. To secure a space for routing a flexible cable at a low cost without using a flexible cable as in the past, even when a handle lever cannot be provided, or when providing a handle lever in that space would impair operability. The inclination angle of the seat can be adjusted by an unnecessary and easy-to-operate inclination angle adjustment device.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the internal structure of an embodiment of the present invention, Fig. 2 is a sectional view taken along the - line, Fig. 3 is a sectional view taken along the - line, and Fig. 4 is a sectional view taken along the - line. FIG. 5 is a perspective view of the seat showing the attached state, and FIG. 5 is a sectional view taken along the - line in FIG. 4. 1...Base, 2...Axis, 3...Arm, 3a...
...first ratchet tooth, 4... shaft, 5... pawl lever, 5a... second ratchet tooth, 6... release plate, 7... sub-release plate,
8...roller, 9...shaft, 10...roller, 11
...Shaft, 12...Handle lever, 12a...Knob, 12b...Locking part, 13...Pin, 14...
Spring, 40...Movable backrest, 41...Fixed backrest, 42...Cushion.

Claims (1)

[Scope of utility model registration request] an arm that has first ratchet teeth and is fixed to a movable backrest of a vehicle seat and rotates together with the backrest; a second arm that engages with the first ratchet teeth to prevent rotation of the arm; a pole lever having ratchet teeth and rotatably disposed near the rotation axis of the arm; and an elastic member pivotally supported on an axis substantially perpendicular to the rotation axis of the arm. a handle lever that is rotatably connected to the rotation shaft of the arm and connected to the handle lever, the handle lever being operable in the width direction of the vehicle against the urging force of the arm; a rotation plate that rotates in a direction away from the rotation axis of the pole lever due to the operating force of the handle lever when the pole lever is operated in the approximate width direction of the vehicle; a pressing member that presses the pawl lever so that the ratchet teeth mesh with the first ratchet teeth; and a pressing member that presses the pawl lever so that the ratchet teeth mesh with the first ratchet teeth; An inclination angle adjustment device for an automobile seat, comprising a release member for rotating the pawl lever in a direction to release the engagement between the first ratchet tooth and the second ratchet tooth.