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Small caster with buffer

A technology of buffers and small casters, which is applied in the direction of casters, wheels, transportation and packaging, etc., can solve the problems of large wheel position changes, road resonance, insufficient attenuation, etc., and achieve the effect of suppressing vibration and shaking

Inactive Publication Date: 2005-03-23
KYB CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the case of the rubber bush type, only the torsion of the rubber bush is likely to cause insufficient attenuation after the input shock, and in the case of the hydraulic shock absorber type, since the spring characteristics are constant, the applied load The hydraulic shock absorber is extended and contracted, the position of the wheel changes greatly, and the unevenness of the road surface will cause resonance phenomenon

Method used

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Embodiment Construction

[0031] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0032] Such as figure 1 As shown, the caster has a bracket 2 connected to a vehicle body such as a wheelchair, a link 3 rotatably supported on the bracket 2 , and a wheel 4 rotatably supported on the front end of the link 3 . The wheel 4 is rotatably supported by a bolt 6 connected to the front end of the link 3 via a bearing not shown in the figure.

[0033] Such as figure 2 As shown, the bracket 2 has a U-shaped cross section, and is connected to the vehicle body through a bolt 5 passing through its upper part through a bearing not shown in the figure. The carriage 2 turns around a vertical axis (left-right direction), and the wheels 4 face the forward direction.

[0034] The connecting rod 3 is supported by the bracket 2 by the bolt 10, and can rotate about a horizontal axis (vertical direction) by twisting the rubber bush 8.

[0035] refer to image 3 It...

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Abstract

In a caster which supports a wheel by using via a link 3 a bracket 2 to be fitted to a wheelchair or the like, an end of the link 3 is connected with a rotation axis of the bracket 2 via a rubber member 8 which is twisted and deformed resulting from oscillating motion of the link 3, and the link 3 and the bracket 2 are connected by a hydraulic damper 20 which damps the oscillating motion of the link 3, whereby an oscillation or a shock can be absorbed.

Description

technical field [0001] The invention relates to a caster wheel for baby carts, wheelchairs, etc., in particular to the improvement of the caster wheel with a buffer mechanism. Background technique [0002] In the past, as a caster with a cushioning mechanism, the wheel and the body of the wheelchair were connected by a link, and the link was connected to the body side through a rubber bush. The wheel displacement caused by the load change twisted the rubber bush to absorb the impact, or The above-mentioned connecting rod is replaced with a hydraulic buffer, so that the hydraulic buffer has the function of the connecting rod and the function of the hydraulic buffer. [0003] However, in the case of the rubber bush type, only the torsion of the rubber bush is likely to cause insufficient attenuation after the input shock, and in the case of the hydraulic shock absorber type, since the spring characteristics are constant, the applied load If the shock absorber is extended and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B33/00
Inventor 渡边靖国
Owner KYB CORP
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