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Buffer and mechanical switch

A buffer and cylinder technology, applied in mechanical equipment, shock absorbers, shock absorbers, etc., to achieve the effect of high dynamic performance, optimized dynamic performance, and high debugging efficiency

Inactive Publication Date: 2016-02-24
陈鸽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the damping force generated by the buffer will promote the reverse movement of the moving contact, which often causes the moving contact to bounce when closing.

Method used

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  • Buffer and mechanical switch
  • Buffer and mechanical switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0041] A buffer of the present invention, such as figure 1 As shown, it includes a cylinder body 1, a piston mechanism 2, a pressure relief device 3 and a channel 4. The cylinder body 1 includes a first end cover 12, a cylinder barrel 11 and a second end cover 13, the first end cover 12 is sealed and fixed on the top end of the cylinder barrel 1, further, the first end cover 12 and the cylinder The barrel 1 is integrally formed; the second end cover 13 is fixed on the bottom end of the cylinder barrel 1 by bolts, and the second end cover 13 and the bottom end of the cylinder barrel 1 are sealed by the first sealing ring 15 . The piston mechanism 2 includes a piston 21 and a piston rod 22 . The piston 21 is arranged inside the cylinder 1 , and the side surface of the piston 21 and the inner surface of the cylinder 11 are sealed by a fourth sealing ring 25 , and the piston 21 can slide relative to the cylinder 11 along the axial direction. The piston 21 divides the inner chamb...

Embodiment approach 2

[0048] The difference between Embodiment 2 and Embodiment 1 is only: figure 2 As shown, the channel 4 includes a first channel 41 , a second channel 42 and a third channel 43 . The first channel 41 is built in the first end cover 12 and is in sealing communication with the pressure relief chamber 35 of the pressure relief device, distributed along the radial direction of the first end cover 12; the second channel 42 is arranged outside the cylinder 1, Distributed along the axial direction of the cylinder 11; the third channel 43 is arranged in the cylinder wall of the cylinder 11 and is located on the side of the second end cover 13 and is in sealing communication with the second chamber, distributed along the radial direction of the cylinder 11 . The first channel 41 , the second channel 42 and the third channel 43 are sequentially sealed and communicated with each other.

Embodiment approach 3

[0050] The difference between Embodiment 3 and Embodiment 1 is only: image 3 As shown, the pressure relief device 3 is assembled on the upper end of the cylinder wall of the cylinder 11 , that is, on the side of the first end cover 12 . The pressure relief chamber 35 of the pressure relief device 3 is arranged on the upper end of the cylinder wall of the cylinder 11, which is composed of a bottom wall and a side wall, and the top opening is opened at the outer end of the cylinder 11. Here, the pressure relief device 3 The axis direction determines the top and bottom of the spatial orientation of the pressure relief device 3 . The end of the valve core rod 312 of the pressure relief valve core 31 is inside the valve seat hole 37 , that is, the end of the valve core rod does not protrude from the inner surface of the cylinder 11 . The built-in telescopic rod 313 of the pressure relief valve core 31 extends into the cylinder body 1. The part is a spherical crown, and can also b...

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PUM

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Abstract

The invention discloses a buffer and a mechanical switch. The buffer comprises a cylinder, a piston, a piston rod and a pressure relieving device, wherein the cylinder comprises a first end cover, a cylinder barrel and a second end cover; one end of the piston rod penetrates through the first end cover, and extends into the cylinder to be fixed together with the piston in the cylinder; a cavity of the cylinder is divided into a first cavity and a second cavity at the side with the first end cover by the piston; the pressure relieving device is assembled on the cylinder, and a valve core rod part of a pressure relieving valve rod in the pressure relieving device extends into the first cavity; and a telescopic rod is positioned in the pressure relieving valve core for adjusting a pressure relieving trigger travel. The mechanical switch comprises a single-pole switch; the single-pole switch is axially connected with the buffer; and when the switch is switched on, the buffer relieves the damping force at the tail section of a vacuum foam moving contact travel, the switching-on bounce, caused by the damping force, of a moving contact of the mechanical switch is prevented, and the switching-on performance is improved. The pressure relieving device is arranged on the cylinder of the buffer, and is convenient for installation, debugging, maintenance and replacement of the pressure relieving valve core.

Description

technical field [0001] The present invention relates to a buffer, in particular to a buffer that generates damping at the front of the stroke and releases the damping at the end of the stroke, and releases the damping. . Background technique [0002] At present, new and higher requirements are continuously put forward for the opening and closing performance of high-voltage and low-voltage mechanical switches, and the opening and closing time is required to be shorter without arcing. This will inevitably make the moving contact of the vacuum bubble, which is the core component of the high and low voltage mechanical switch, have a higher speed when opening and closing, and the moving contact will not bounce when closing, and will not discharge and arc. No rebound, no arcing. When the switch is closed, the high-speed moving moving contact of the vacuum bubble collides with its static contact, which is close to elastic collision. At this time, the moving contact will move in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/34F16F9/48
Inventor 陈鸽
Owner 陈鸽
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