Screws and screw-type mechanical components with shock-resistant, vibration-resistant and tightening force-enhanced structures

Abstract

The present invention relates to a screw configured to have improved anti-shock, anti-vibration, and fastening ability, and particularly, to screw technology that: forms an angle of a leading flank surface constituting the inclined plane of a screw thread in an entry direction to be less than an angle of a trailing flank surface constituting the inclined plane of the screw thread in an exit direction, with respect to the center of the screw thread; and has the trailing flank surface provided as a single stage flat portion formed horizontally within a sloped section, to enlarge the contacting surface area between the screw and a female screw correspondingly coupled to the screw. Thus, upward, downward, left and right vibration of a screw caused by external impacts can be prevented so as to avert autonomous disengagement of the screw, and effectively prevent a reduction of disengaging torque arising from repeated use.

Description

technical field [0001] The present invention relates to screws and screw-type mechanical components. More specifically, it relates to a technology related to screws and screw-type mechanical components with impact resistance, vibration resistance and tightening force strengthening structure. The above-mentioned screws and screw-type mechanical components have the ability to It is resistant to external impact during tightening, and has an outstanding anti-loosening effect against vibration in the up, down, left, and right directions after tightening, and is a structure that can suppress the decrease in loosening torque value due to repeated use. Background technique [0002] A machine screw is obtained by rolling a helical groove along the outer peripheral surface of a ring bar. It is not only used for fastening and fixing between mechanical parts, but also widely used in other Mechanical components in power transmission. [0003] As a type of machine screw, firstly, dependi...

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Problems solved by technology

[0007] The above-mentioned existing machine screw and the corresponding internal thread that are fastened to each other have the above-mentioned contact shape, therefore, it is configured to be somewhat unfavorable for enlarging the mutual friction area to strengthen the fastening force, and at the same time improve the mutual friction. Difficulty with fastening force

[0008] In addition, between the existing machine screw and the internal thread that is fastened to each other correspondingly, due to the axial force during fastening and the compressive force after fastening, only the tooth flanks on the different sides ( Flank) forms the contact surface, and there is a problem that the fastening force drops sharply when vibration occurs in the vertical direction or left-right direction due to external impact (such as the impact of dropping).

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