Gear-type chair angle stepless regulation structure

A stepless adjustment and gear-type technology, which is applied to vehicle seats, special positions of vehicles, transportation and packaging, etc., can solve the problems of large seat back gap and the inability to realize dual gears to eliminate gaps at the same time, and achieve small gaps , Eliminate the seat gap, good dustproof effect

Inactive Publication Date: 2007-11-14
HUBEI AVIATION PRECISION MASCH TECH CO LTD
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Problems solved by technology

[0004] The seat angle adjustment mechanism disclosed in Chinese Utility Model Patent Specification Publication Nos. CN2193087 and CN2696412 is a gear-type adjustment mechanism, which adopts a double-gear internal meshing transmission. Due to the inevitable manufacturing error, this device cannot realize the double-gear and eliminate the gap at the same time. Therefore, the seat back clearance is relatively large

Method used

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Embodiment Construction

[0016] In Fig. 1 and Fig. 2, the present invention includes a gear transmission mechanism, a gap elimination mechanism, a spring and a driving mechanism. The gear transmission mechanism adopts a single-stage gear internal meshing planetary transmission with small tooth difference. The gear transmission mechanism includes an inner tooth plate 14 and an outer tooth plate 3. The outer tooth plate 14 is installed in the inner tooth plate 14 with a certain eccentricity, so that the inner teeth 7 Mesh with the external teeth 21 to realize the single-stage internal meshing transmission of the internal and external gears. When the operating torque acts on the drive mechanism, the internal tooth plate 14 and the external tooth plate 3 mesh with each other and produce planetary motion, so that the mutual The angle changes to achieve the purpose of adjusting the seat angle.

[0017] Due to the inevitable gap between the internal and external gears of mutual meshing and transmission, a co...

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Abstract

It is a gear-type stepless regulating structure of seat angle. The external truss plate of its gear transmission mechanism is equipped in its inner truss plate with an eccentricity. The external cam of its clearance eliminating mechanism is located between the center boss of the inner truss plate and the inner hole of the external truss plate. The inner cam is set between the inner hole of the external cam and the center boss of the inner truss plate. The spring sets inside to form an eccentric cam mechanism. The center axis of the driving mechanism is equipped in the hole of the center boss of the inner truss plate. The driving block locates between the inner and external cams. When the spring in free state, the inner and external cams are in wedge ramp state to eliminate the seat clearance. The driving block overcomes the spring force under the moment loading to relieve the wedge ramp of the clearance eliminating mechanism, which drives the gear transmission mechanism transmitting and rotating to adjust the seat angle. The invention has compact structure, small clearance, high intensity and strong generality, which can realize the manual and electric adjustment and stepless regulation of the seat backrest.

Description

technical field [0001] The invention relates to a gear-type adjustment structure for stepless adjustment of the seat angle, which can be used for stepless adjustment of the back angle of car seats or other seats after being connected with any form of seat back mounting plate and seat seat mounting plate . Background technique [0002] In the prior art, seat angle adjustment mechanisms can be roughly divided into two categories: one is a leaf spring type adjustment mechanism using the principle of a ratchet and pawl mechanism; the other is a gear type adjustment mechanism using a planetary gear transmission principle. The seat angle adjustment mechanism disclosed in Chinese Utility Model Patent Specification Publication No. CN2358759, CN2494632, CN257768, and CN2590784 is a leaf spring type adjustment mechanism using the principle of a ratchet and pawl mechanism. These four core transmission devices cannot be realized due to structural limitations. There is no stepless adjus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60N2/235
CPCB60N2/2252B60N2/2254
Inventor 黄兴黄正坤崔庆
Owner HUBEI AVIATION PRECISION MASCH TECH CO LTD
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