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Seat reclining device

A reclining and seat technology, applied in the field of seat reclining devices, can solve the problems of high cost, high working stress, large radial size and the like

Inactive Publication Date: 2007-02-28
AISIN SEIKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to provide the coil spring 105 with this structure, a coil spring 105 with high working stress has been used, however, the cost of this coil spring 105 is relatively high, and the radial dimension of this coil spring 105 becomes relatively large. Big

Method used

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  • Seat reclining device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0022] A first embodiment of the present invention will be explained below based on the drawings. In this embodiment, one example of the seat reclining device 1 attached to a vehicle seat will be described. FIG. 1 shows an exploded perspective view showing a seat reclining device 1 of this embodiment. FIG. 2 is a front view showing the seat reclining device of this embodiment. FIG. 3 shows a cross-sectional view showing the seat reclining device of this embodiment.

[0023] As shown in FIGS. 1 to 3 , the seat reclining device 1 includes a seat back frame 3 , a seat cushion frame 4 , a lock device 2 , an operating lever 5 and a lever shaft 6 . Specifically, the seat back frame 3 constitutes the skeleton structure of the seat back, the seat cushion frame 4 constitutes the skeleton structure of the seat cushion, and the lock device 2 is provided at the joint between the seat back frame 3 and the cushion frame 4 to operate The lever 5 and the lever shaft 6 serve as an operating...

no. 2 approach

[0071] A second embodiment related to the present invention will be explained below based on the drawings. FIG. 4 shows a front view of the seat reclining device 1 related to the second embodiment. As shown in FIG. 4 , the seat reclining device 1 in the second embodiment has basically the same configuration as that of the first embodiment, but the shape of the outer end engaging portion 91 and the inner end engaging portion 92 of the coil spring 9 , the engaging outer The configuration of the outer end engaging piece 7 of the end engaging portion 91 is different from that of the inner end engaging piece 8 engaging the inner end engaging portion 92 . In this section, the seat reclining device 1 of the second embodiment will be explained focusing on the difference between the first embodiment and the second embodiment.

[0072] In the second embodiment, the coil spring 9 includes a stepped portion formed at a substantially middle portion of the outer end joint portion 91 in the...

no. 3 approach

[0098] A third embodiment of the present invention will be explained below based on the drawings. FIG. 5 shows a front view of the seat reclining device 1 related to the third embodiment. As shown in FIG. 5 , the seat reclining device 1 of the third embodiment has substantially the same configuration as that of the first embodiment, however, the outer support plate 71 of the outer end joint 7 and the inner end joint 8 , the outer support plate 81. The inner support plate 72 and the inner support plate 82 are not formed into a plate shape. In the third embodiment, instead of plates, outer support pins 76 and 86 and inner support pins 77 and 87 formed in a pin shape are used. In this section, the seat reclining device 1 of the third embodiment will be explained focusing on the difference between the first embodiment and the third embodiment.

[0099] The outer end fitting 7 includes an outer support pin 76 , an inner support pin 77 and a main portion 73 . Specifically, the ou...

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PUM

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Abstract

A seat reclining device (1) includes a spiral spring (9) made of a wire (9A) and formed in a spiral shape having a first engaged portion (91) and a second engaged portion (92), a first engaging member (7) and a second engaging member (8) characterized in that one / each of the first engaging member and the second engaging member includes an extending direction supporting member (s) supporting the first engaged portion and / or the second engaged portion, from the opposite end side of the wire in an extending direction thereof, a first supporting member (o) supporting the first engaged portion and / or the second engaged portion from outside of the wire, and a second supporting member supporting (i) the first engaged portion and / or the second engaged portion from inside of the wire in a normal direction thereof.

Description

technical field [0001] The present invention relates to a seat reclining device having a coil spring that applies a predetermined biasing force to a seat back so that the seat back rotates in a predetermined rotational direction relative to a seat cushion. Background technique [0002] A reclining device related to the support structure of the coil spring of the seat reclining device is disclosed in JP2001-292850A, for example, as shown in FIG. A second hook plate 104 fixed at the seat cushion frame 103, and a coil spring 105 for biasing the seat back frame 101 to rotate forward. The coil spring 105 includes an inner end 105a formed by bending the end of the coil spring 105 inward in the radial direction of the coil spring 105 and an outer end 105a formed by bending the end of the coil spring 105 outward in the radial direction of the coil spring 105. end 105b, and the coil spring 105 applies a biasing force in such a way that the inner end 105a engages the first hook plate...

Claims

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Application Information

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IPC IPC(8): A47C1/024
CPCB60N2/22
Inventor 山田幸史二本松英雄
Owner AISIN SEIKI KK
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