Disc type gapless chair angle modulation device

Abstract

The invention provides a disc-shaped no-clearance seat angle adjuster, belonging to automobile parts. The invention comprises a movable gear plate, a fixed gear plate, a pair of clearance removal blocks, a built-in bracket, a clamping spring, a dustproof cover, a cover plate, and a closed ring; the middle of the movable gear plate is provided with a first shaft hole, a first concave chamber with an internal tooth ring at one side and a first connecting bulge at the other side; one side of the first shaft hole is convexly provided with a shaft sleeve seat; the middle of the fixed gear plate is provided with a second shaft hole, a second concave chamber and a second connecting bulge at one side, and an external tooth at the other side; one side of the second shaft hole is convexly provided with a shaft seat; the clearance removal blocks are in waist-shape where a trough is arranged; the built-in bracket is provided with a clamping spring foot position limit block; the opening end of the clamping spring forms a clamping spring foot; the dustproof cover covers the second concave chamber; the middle part of the cover plate is provided with a rotary shaft sleeve with a semi-cirque arranged at one side and fixed by a retaining ring; the closed ring is sealed at the external circumference of the fixed gear plate and the movable gear plate. The invention has the advantages of low production cost, easy assembly, firm locking, strong generalization, and firm connection with a seat.

Description

technical field [0001] The invention relates to a disc-type non-gap seat recliner, which is used for adjusting the angle of the back of the chair relative to the chair, and belongs to the technical field of auto parts. Background technique [0002] Generally, all have seat on the vehicle, can ride comfortably to guarantee driver or passenger. In addition, a recliner is installed between the seat cushion connecting plate and the backrest connecting plate, and the recliner can adjust any angle of the backrest through the transmission part, so as to flexibly adjust the relative position of the backrest according to the body shape of the driver or passenger. The angle of inclination of the cushion. At present, the more common recliner used on motor vehicle seats in the market is the disc recliner, which mainly includes a disc-shaped fixed disc and a disc-shaped movable disc. On the plate, the movable plate is installed on the backrest connection plate, and is rotatably connect...

AI Technical Summary

Problems solved by technology

This structure can fully avoid tooth sliding and tooth collapse, ensure locking reliability, and meet the requirements of arbitrary angle adjustment and fast adjustment, but it has the following disadvantages: many parts, complex structure, cumbersome assembly, large volume, high production cost, Large axial clearance, poor balance, unstable performance

However, the applicant still finds the following defects: firstly, due to the use of double-linked gears, on the one hand, the manufacturing difficulty and cost are increased, and on the other hand, it is difficult to assemble. The meshing between the large gear and the ring gear in the cavity of the fixed chainring must also ensure the meshing between the small gear of the double chain gear and the ring gear in the chamber of the movable chainring; secondly, the eccentric wheel and the double chain A ball bearing composed of a ball support ring and several balls is used between the gears, which increases the production cost and increases the difficulty of assembly, and cannot completely eliminate the axial gap between the eccentric wheel and the double-linked gear

[0003] In view of the above existing problems, China Utility Model Patent Authorization Notice No. CN2776748Y discloses a "double-piece seat recliner". Its achievements are: simple structure, convenient assembly, no axial clearance and locking It is reliable, but the following problems are also exposed in the actual use process: 1. Since the fixed tooth plate and the movable tooth plate are designed to be elongated earlobe shapes, in order to fit the shape of the seat cushion connecting plate and the backrest connecting plate The shape of the recliner has special requirements, which leads to narrow application range and poor versatility of the recliner; 2. When installing, it is only realized by a pair of positioning bosses on the side of the fixed tooth plate and the movable tooth plate. Make the connection between the recliner and the seat unreliable

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