JPS6338841U

JPS6338841U -

Info

Publication number: JPS6338841U
Application number: JP1986133066U
Authority: JP
Priority date: 1986-08-29
Filing date: 1986-08-29
Publication date: 1988-03-12

Description

[Brief explanation of the drawing]

第１図は本考案の第一の実施例を示す第２図に
おける―断面図、第２図は本考案の実施例を
示す側面図、第３図は本考案の第二の実施例を示
す第４図における―断面図、第４図は本考案
の第二の実施例を示す側面図、第５図は従来のシ
ートバツクの角度調整装置の断面図である。１，１３……ロアアーム、１ａ，１３ａ……外
歯車、１ｂ，２ｂ，１６ａ……穴、２，１１……
アツパアーム、２ａ，１１ａ……内歯車、３，１
２，１４……リベツト、４，１５……カバー、５
……シヤフト、５ａ，５ｂ，１６ｂ，１７ｃ……
同心部、５ｃ，１７ｂ……偏心部、５ｄ，１７ｄ
……溝、６，２２……止輪、１１ｂ，１３ｂ，１
５ａ……貫通孔、１６……シヤフト本体、１７…
…偏心シヤフト、１７ａ……スプライン部、１８
……ギヤ、１９……ナツト、２０，２３……ワツ
シヤ、２１……コイルスプリング、２４……皿ば
ね。 Figure 1 is a sectional view of Figure 2 showing the first embodiment of the invention, Figure 2 is a side view of the embodiment of the invention, and Figure 3 is the second embodiment of the invention. 4 is a side view showing a second embodiment of the present invention, and FIG. 5 is a sectional view of a conventional seat back angle adjustment device. 1, 13... Lower arm, 1a, 13a... External gear, 1b, 2b, 16a... Hole, 2, 11...
Atsupa arm, 2a, 11a... Internal gear, 3, 1
2,14...Rivet, 4,15...Cover, 5
...Shaft, 5a, 5b, 16b, 17c...
Concentric part, 5c, 17b...Eccentric part, 5d, 17d
... Groove, 6, 22 ... Retaining ring, 11b, 13b, 1
5a...Through hole, 16...Shaft body, 17...
...Eccentric shaft, 17a...Spline part, 18
... Gear, 19 ... Nut, 20, 23 ... Washer, 21 ... Coil spring, 24 ... Disc spring.

Claims

[Scope of utility model registration request]

A first arm formed with an external gear and a second arm formed with an internal gear having a larger number of teeth than the external gear engage the concentric and eccentric parts of the shaft that rotates when adjusting the angle of the seat back. In the seat back angle adjustment device using a planetary gear mechanism rotatably inserted into the arm, the eccentric portion of the shaft is formed by an eccentric shaft fitted so as to be movable in the axial direction of the shaft body, and the eccentric shaft 1. A seat back angle adjusting device, characterized in that said outer gear is made of an elastic body to apply a biasing force in a direction in which said external gear and said internal gear engage with each other.