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Vehicle seat reclining device

A technology of tilting device and vehicle seat, applied in the direction of vehicle seat, special position of vehicle, movable seat, etc., can solve the problems of thermal influence, insufficient durability, inability to rotate and move the wedge parts, etc., and achieve smooth angle adjustment, The effect of suppressing the increase in rotation speed

Inactive Publication Date: 2010-06-02
AISIN SEIKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, since the deflection of the elastic member becomes smaller, it cannot cope with a large rotational movement of the wedge member.
[0006] In addition, it is not practical to worry about the insufficient durability of rubber elastic parts, the deterioration of rubber due to lubricants and oils, and the heat influence of welding during installation.

Method used

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  • Vehicle seat reclining device
  • Vehicle seat reclining device
  • Vehicle seat reclining device

Examples

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Embodiment Construction

[0039] Next, a first embodiment of the present invention will be described. Such as figure 1 As shown, the vehicle seat reclining device 10 adjusts the inclination angle of the seat back 20 with respect to the seat cushion 30 . In the present embodiment, vehicle seat reclining devices 10 having substantially symmetrical structures are attached to the left and right sides of the vehicle seat 3, respectively, and the two vehicle seat reclining devices 10 are connected by an interlocking shaft 8 to be described later. together. A drive device 5 having a motor 51 is attached to one vehicle seat reclining device 10 , and operates in conjunction with the other vehicle seat reclining device 10 not provided with a drive device. Hereinafter, the structure and operation of the vehicle seat reclining device 10 having the drive device 5 will be mainly described.

[0040] Such as figure 1 , figure 2 As shown, the seat cushion 30 is fixed to the lower arm 11 through the mounting hole ...

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PUM

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Abstract

A vehicle seat reclining device allowing smooth adjustment of seatback angles. The vehicle seat reclining device has an internally toothed gear (12) formed on a gear plate (1) fixed to a lower arm; an externally toothed gear (22) formed on an upper arm (2), meshing with the internally toothed gear, and having teeth the number of which is less by at least one or more than the number of the teeth of the internally toothed gear; wedge members (7a, 7b) capable of being frictionally engaged with or disengaged from the gear plate or the upper arm; a spring (9) provided between the wedge members and urging the wedge members in the direction in which they are frictionally engaged with either the gear plate or the upper arm; a drive shaft (6) for rotating in a pressing manner either of the wedge members in the direction in which it is released from the frictional engagement; and a ring member (75a) provided in a relatively rotatable manner between either the gear plate or the upper arm and the wedge members and, when the drive shaft rotates, rotating together with the wedge members so as to rotate relative to the other of the either the gear plate or the upper arm.

Description

technical field [0001] The present invention relates to a seat reclining device for a vehicle that adjusts the angle of a seat back of a vehicle seat. Background technique [0002] In the past, as a seat reclining device for a vehicle, as shown in Patent Document 1, it has: a lower arm (20) installed on the seat cushion side and fixed with an internal tooth gear (32); The upper arm (10) of the external tooth gear (31) with few teeth gears (32); a pair of wedge parts (35, 36) capable of frictional engagement and release of frictional engagement with respect to the lower arm (20) and the upper arm (10); A spring (37) disposed between a pair of wedge members (35, 36) and normally biased toward one of the wedge members (35, 36) in a frictional engagement; a drive shaft (33) that makes the pair of wedge members One of (35, 36) overcomes the elastic force of spring (37) to move toward the direction of disengaging frictional engagement, and makes wedge member (35, 36) rotate relat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C1/025B60N2/22
CPCB60N2/2213B60N2/0232B60N2002/024B60N2/2254B60N2/2252B60N2/02258B60N2/02246
Inventor 伊东定夫
Owner AISIN SEIKI KK
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