CN101996824A

CN101996824A - Screw assembling unit for reliable line-pressing of alternating-current contactor

Info

Publication number: CN101996824A
Application number: CN2010105254472A
Authority: CN
Inventors: 史祺; 高云旭; 于振国; 刘冬英; 李克芹
Original assignee: Tianjin Baili Electronic Co Ltd
Current assignee: Tianjin Baili Electronic Co Ltd
Priority date: 2010-10-29
Filing date: 2010-10-29
Publication date: 2011-03-30

Abstract

The invention relates to a screw assembling unit for reliable line-pressing of an alternating-current contactor; the screw assembling unit of the alternating-current contactor comprises a stacking clip-type part, a screw and a U-shaped washer plate, an internally-convex hole is arranged at one vertical part of the U-shaped washer plate, and the vertical part is arranged above a stacking screw hole of the clip-type part; a panel with lower tile-shaped plane is arranged at the other vertical part of the U-shaped washer plate, and the other vertical part is arranged in the space surrounded by the clip-type part, and the bottom part of the U-shaped washer plate is arranged at one side of the opening of the clip-type part; the screw is provided with a thin neck and a flat end, and the thin neck of the screw is arranged at the square hole position of the washer plate; three side surfaces of a square hole at the upper part of the washer plate are cold-headered on the screw neck, the screw can rotate in the washer plate and the clip-type part, the washer plate can not be taken off from the screw, the plane of the end of the screw props against to the plane of the lower surface of the washer plate and is connected by the U-shaped side wall and can not fall off and be inclined, so as to lead the crew assembling unit to press line reliably and to work normally.

Description

The set screws component of the reliable line ball of A.C. contactor

Technical field

The invention belongs to a kind of A.C. contactor, particularly relate to the set screws component of the reliable line ball of a kind of A.C. contactor.

Background technology

The set screws component that uses in present known A.C. contactor is when pressing the sub-thread copper conductor, roofing washer is pushed by screw, bigger inclination takes place, little with screw head is squeezed bad, after screw unclamps, roofing washer comes off from screw, thereby makes reliably line ball of set screws component, and A.C. contactor can't operate as normal.

Summary of the invention

The present invention provides a kind of set screws component that can make the line ball roofing washer be difficult for the reliable line ball of A.C. contactor that comes off from screw for solving the technical problem that exists in the known technology.

The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: it includes the laminated type clip-shaped piece and the screw of the set screws component of A.C. contactor, on described clip-shaped piece lamination, a screwed hole is arranged, also include a side U font washer plate, on one one vertical part branch of described washer plate U font, a square opening is arranged, the middle part on square four limits, this hole is to protrude to the center in hole, and this vertical part branch that has square opening is to be placed on the screwed hole of described clip-shaped piece lamination; Dividing in another vertical part of described washer plate U font is the flat board of a lower plane for watt shape, this plate part is in the space that described clip-shaped piece impales on four sides, and this moment, the bottom of described washer plate U font just in time was in a side of the space opening that described clip-shaped piece impales on four sides; Described screw is that a neck does not promptly have screw thread, and its diameter has the thin neck of the diameter of threaded portion less than screw, and the termination of described screw is the plane; The thin neck place of described screw just in time is in the square opening place of described washer plate.

Advantage and good effect that the present invention has are: by with three side cold-headings of washer plate top square hole on the neck of screw, cold honest after, screw can freely rotate in washer plate and clip-shaped piece, and washer plate can not deviate from from screw, when being screwed into screw, the termination planar top of screw is on plane on the following watt of shape plane of washer plate bottom, thereby watt shape not run-off the straight of plane, watt shape plane is connected by the sub-shape sidewall of U, so can not come off, make reliably line ball of set screws component, A.C. contactor can operate as normal.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the A-A cutaway view of Fig. 1:

Fig. 3 is the side top perspective view of washer plate.

Embodiment

For further understanding content of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

As shown in Figure 1, 2, a screwed hole is arranged on the lamination of clip-shaped piece 3.One one vertical part of the U font of a U font washer plate 2 is divided a square opening 6, and the middle part on three limits of square opening 6 is to protrude to the center in hole, and this vertical part branch that has square opening 6 is to be placed on the screwed hole of clip-shaped piece 3 laminations; Dividing in another vertical part of the U of washer plate 2 font is the flat board 5 of a lower plane for watt shape, and these dull and stereotyped 5 parts are in the space that clip-shaped piece 3 four sides impale, and the bottom of the U font of washer plate 2 just in time is in a side of the space opening that clip-shaped piece impales on four sides; Screw 1 is that a neck does not promptly have screw thread, and its diameter has the thin neck of the diameter of threaded portion less than screw 1, and the termination of screw 1 is the plane; The thin neck place of screw 1 just in time is in the square opening place of washer plate 2.

The square opening 6 that screw 1 passes washer plate 2 is screwed in clip-shaped piece 3, when the neck place of the top of washer plate 2 square opening 6 at screw 1, three sides of the square hole of cold-heading washer plate 2, making screw 1 promptly block can freely rotate again in the top of washer plate 2 square opening 6, and washer plate 2 can not be deviate from from screw 1 simultaneously.

Claims

1. the set screws component of the reliable line ball of A.C. contactor, it includes the laminated type clip-shaped piece and the screw of the set screws component of A.C. contactor, on described clip-shaped piece lamination, a screwed hole is arranged, it is characterized in that: also include a side U font washer plate, on one one vertical part branch of described washer plate U font, a square opening is arranged, the middle part on square four limits, this hole is to protrude to the center in hole, and this vertical part branch that has square opening is to be placed on the screwed hole of described clip-shaped piece lamination; Dividing in another vertical part of described washer plate U font is the flat board of a lower plane for watt shape, this plate part is in the space that described clip-shaped piece impales on four sides, and this moment, the bottom of described washer plate U font just in time was in a side of the space opening that described clip-shaped piece impales on four sides; Described screw is that a neck does not promptly have screw thread, and its diameter has the thin neck of the diameter of threaded portion less than screw, and the termination of described screw is the plane; The thin neck place of described screw just in time is in the square opening place of described washer plate.