Adjustable damping mechanism, camera shooting sliding rail device and damping adjusting method

Abstract

The invention belongs to the technical field of damping devices, and particularly relates to an adjustable damping mechanism, a camera shooting sliding rail device and a damping adjusting method.The adjustable damping mechanism comprises a first connecting sleeve and a linkage shaft arranged in the first connecting sleeve in a sleeved mode, the lower end of the linkage shaft is fixedly connected with the first connecting sleeve through a damping end cover, and the upper end of the linkage shaft is fixedly sleeved with a limiting column; a second connecting sleeve is arranged between the limiting column and the first connecting sleeve, and the second connecting sleeve and the first connecting sleeve can move relatively in the vertical direction; a following valve is arranged between the first connecting sleeve and the linkage shaft and located under the second connecting sleeve, the upper end of the following valve abuts against the lower end of the limiting column for limiting, and the lower end of the following valve abuts against the damping end cover for limiting through an elastic piece. A closed cavity is formed among the first connecting sleeve, the limiting column, the second connecting sleeve and the following valve, and the closed cavity is filled with damping oil. By changing the contact area between the first connecting sleeve and the damping oil and between the second connecting sleeve and the damping oil, the continuously changing damping effect after rotation is achieved.

Description

technical field [0001] The invention belongs to the technical field of damping devices, in particular to an adjustable damping mechanism, a camera slide rail device and a damping adjustment method. Background technique [0002] The micro-movement slide rail is a common shooting equipment for camera enthusiasts. The existing micro-movement slide rails mostly realize bidirectional sliding by means of double-layer sliders, that is, the length of one slide rail can achieve twice the distance of the slide rails, which shortens the sliding distance. The length of the rail is more convenient for photography enthusiasts to carry, but when the micro-movement slide rail is sliding, the stability and uniformity of the slider sliding is a key factor affecting the shooting effect. [0003] In the prior art, in order to realize the uniform sliding of the slider, a damping structure is set on the micro-movement sliding rail. However, this damping structure hinders the movement flexibility...

AI Technical Summary

Problems solved by technology

[0002] The micro-moving slide rail is a commonly used shooting device for photographers. The existing micro-moving slide rails mostly realize two-way sliding through the double-layer slider, that is, the distance of twice the slide rail is realized by the length of one slide rail, which shortens the distance of the slide rail. The length of the rail is more convenient for photographers to carry, but when the micro-movement slide rail is sliding, the stability and uniformity of the slider sliding is a key factor affecting the shooting effect

[0003] In the prior art, in order to realize the uniform sliding of the slider, a damping structure is set on the micro-movement slide rail. For example, a damping structure tightens the track through the elasticity of the rubber wheel, so as to increase the friction to control the speed. However, this damping structure hinders the flexibility of the slide rail, and it is easy to cause sudden derailment, "jumping and slipping" and other phenomena, which will affect the shooting effect of the picture

There is also a damping structure, such as in the patent CN207093684U, the inner ring of the damping inner adjustment ring is filled with wool products, and the height of the damping inner adjustment ring is controlled by rotating the damping outer adjustment ring, so that it is produced by extruding the wool products and the damping synchronous wheel. The principle of friction is to increase or decrease the damping coefficient; the above two damping mechanisms adjust the damping size by increasing the contact force through extrusion, the adjustable range of damping is small, and the damping after extrusion is difficult to achieve smooth damping effect

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