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Device for regulating chair angle

By adopting a three-slider structure and a cam design of different thicknesses in the seat angle adjustment device, combined with the cooperation of the return spring and the central shaft, the problem of poor stability of the slider ratchet and the ratchet ratchet is solved, and angle adjustment and locking are achieved. The balanced and automatic centering simplifies production and installation, reducing the bulkiness and maintenance requirements of the overall structure.

Active Publication Date: 2008-08-20
HUBEI AVIATION PRECISION MASCH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the force of the locking part supporting the slider is greater than that of the unlocking part, the strength of the force is different
There are reinforcing ribs on the cam, and the shape is composed of multiple curves, which is not easy to process, and the device adopts a buckle structure, which is large in size and the overall structure is heavy

Method used

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Experimental program
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Effect test

Embodiment Construction

[0028] The embodiment of the present invention is given below, and the composition of the device in the embodiment and the connection relationship of each part in the device will be described in detail in conjunction with the accompanying drawings.

[0029] In this embodiment, a three-slider structure is adopted. see Figure 4 , Figure 5 , the locking cam 26 is connected to the unlocking cam 27 through its own half-punched boss 19 , and the slider 5 is connected to the three symmetrical cam grooves 4 on the unlocking cam 27 through its own half-punched boss 18 . Self-locking is formed between the self-locking surface 31 of the slider and the self-locking surface 30 of the locking cam 26 .

[0030] When the seat angle adjustment device composed of the above-mentioned three-slider structure is used to realize the angle adjustment of the seat, the meshing between the ratchet teeth is more stable and flexible. Combine below Figure 4 , Figure 5 , Image 6 , Figure 7 Desc...

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PUM

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Abstract

The invention discloses a device regulating the angle of a seat, belonging to the machine technical field, which comprises a unlocking cam the thickness of which is less than the thickness of the locking cam, a locking cam, a ratchet wheel, a slideway board and a reset spring connected with a central shaft; wherein, the locking cam is connected with the unlocking cam, the sliding block is connected with the unlocking cam and the slideway, the sheath is connected with the ratchet wheel and the slideway board and the reset spring is connected with the slideway board; the thickness of the locking cam and the unlocking cam is designed according to the stress strength of the cams. The device regulating the angle of a seat has the advantages that: because the locking cam and the unlocking cam are produced separately, the mold structure is simplified significantly, the service life of the mold is significantly increased, the mold can meet the requirement of stamping and the productivity is enhanced greatly; furthermore, because of the sheath structure adopted by the device, the device has simple structure, flexible installment and no requirement of maintenance.

Description

technical field [0001] The invention relates to the field of mechanical technology, in particular to a device for adjusting the angle of a seat. Background technique [0002] At present, many seats can realize the functions of angle adjustment and fast folding of the seat back, and realize the locking function after the angle adjustment, so that the angle between the seat and the seat back is fixed. [0003] There are two main ways in the prior art to realize the angle adjustment: the first way refers to the patent No. ZL 200420017699.4, and the name of the utility model is leaf spring seat angle adjustment and seat back folder core device. see figure 1 , In this device, two sliders are used to realize the angle adjustment. The device adopts a sheath structure, which is compact and maintenance-free. However, due to the adoption of two sliders, after the central shaft 101 rotates, the slider 102 will move in translation in the chute to the circumferential direction of the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C1/024A47C1/026
CPCB60N2/236Y10T74/2101
Owner HUBEI AVIATION PRECISION MASCH TECH CO LTD