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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 large radial size, high cost, high working stress, etc.

Inactive Publication Date: 2009-10-14
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
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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. figure 1 An exploded perspective view showing the seat reclining device 1 of this embodiment is shown. figure 2 A front view showing the seat reclining device of this embodiment is shown. image 3 A cross-sectional view showing the seat reclining device of this embodiment is shown.

[0023] Such as Figures 1 to 3 As shown, the seat reclining device 1 includes a seat back frame 3 , a seat cushion frame 4 , a lock device 2 , an operating rod 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 s...

no. 2 approach

[0071] A second embodiment related to the present invention will be explained below based on the drawings. Figure 4 A front view of the seat reclining device 1 related to the second embodiment is shown. Such as Figure 4 As shown, 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 shape of the engaging outer end engaging portion The configuration of the outer end engagement member 7 of 91 is different from that of the inner end engagement member 8 engaging the inner end engagement 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 out...

no. 3 approach

[0098] A third embodiment of the present invention will be explained below based on the drawings. Figure 5 A front view of the seat reclining device 1 related to the third embodiment is shown. Such as Figure 5 As shown, 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, the outer support plate 81, the inner support plate 71 of the outer end joint 7 and the inner end joint 8 The support plate 72 and the inner support plate 82 are not formed in 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 po...

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PUM

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Abstract

A seat reclining device (1) comprising a coil spring (9) made of metal wire (9A) and formed into a spiral shape, a first joint part (7) and a second joint part (8), the coil spring It has a first joint part (91) and a second joint part (92), characterized in that one / each of the first joint part and the second joint part includes: from the opposite end of the metal wire along the extension direction of the metal wire. an extension direction support (s) that side-supports the first joint part and / or the second joint part; a first support part (o) that supports the first joint part and / or the second joint part from the outside of the metal wire; and along The normal direction of the metal wire supports the second support (i) of the first joint part and / or the second joint part from the inside of the metal wire.

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 bracket structure of the coil spring of the seat reclining device is disclosed in JP2001-292850A, for example, as Figure 8 As shown, it includes a first hook plate 102 fixed at the seat back frame 101, a second hook plate 104 fixed at the seat cushion frame 103, and a biasing force for applying a biasing force to the seat back frame 101 to make it Coil spring 105 turned 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 105...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47C1/024
CPCB60N2/22
Inventor 山田幸史二本松英雄
Owner AISIN SEIKI KK