Title:
HYDRAULIC BREAKER CHISEL
Document Type and Number:
WIPO Patent Application WO/2022/055219
Kind Code:
A1
Abstract:
The present invention provides a hydraulic breaker chisel, which is struck by a piston provided to reciprocate inside a hydraulic breaker, and comprises: a shaft-shaped chisel body having a conical crushing part provided at the lower end thereof, and having, at one side thereof, a mounting groove part tapered such that the diameter thereof gradually decreases from the upper side to the lower side thereof; a compression elastic body, which is made of a soft material, is provided in the mounting groove part so as to be inserted into and disposed at the outer side of the chisel body, and absorbs and reduces vibration that moves in the axial direction of the chisel body, while being compressed toward the inner side of the chisel body by inertia when the piston strikes the chisel body; and a coil-type elastic spring which is coupled to and provided in the inner portion of the compression elastic body so as to be inserted into and disposed on the outer side of the chisel body, thereby elastically supporting the compression elastic body, and which increases compressive force, generated from the compression of the compression elastic body toward the inner side of the chisel body, so as to increase the absorption rate of vibration that moves in the axial direction of the chisel body, while being compressed toward the inner side of the chisel body by inertia when the piston strikes the chisel body.
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Inventors:
JEONG MUN GYO (KR)
Application Number:
PCT/KR2021/012115
Publication Date:
March 17, 2022
Filing Date:
September 07, 2021
Export Citation:
Assignee:
MAPP CO LTD (KR)
International Classes:
E02F3/96; F16F15/04
Foreign References:
| KR20090119614A | 2009-11-19 | |||
| KR20170020831A | 2017-02-24 | |||
| JP2009062700A | 2009-03-26 | |||
| KR101804790B1 | 2017-12-05 | |||
| KR102266336B1 | 2021-06-18 |
Attorney, Agent or Firm:
TAEBAEK INTELLECTUAL PROPERTY LAW FIRM (KR)
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