CN212848236U - An assembly structure of a moving point block - Google Patents

Abstract

The utility model provides an assembly structure of moving point piece, including the push rod to and the cover locate the push rod the outside and with push rod sliding connection's moving point piece, be equipped with insulating cover between push rod and the moving point piece, be equipped with a wear-resisting section of thick bamboo between insulating cover and the push rod, a wear-resisting section of thick bamboo can follow up insulating cover along the push rod motion to prevent that insulating cover and push rod from taking place the friction, and then avoid insulating cover to produce insulating piece, be favorable to improving the reliability in utilization of contactor, insulating cover is including the cover body, the tip of the cover body forms the spacing ring along radially extending outwards, the terminal surface looks butt of spacing ring and moving point piece, the outer fringe of spacing ring forms creepage cover along axial outside extension, and creepage cover is located between push rod and the moving point piece, has increased the creepage distance between push rod and the moving point piece, prevents the emergence of flashover phenomenon.

Description

Moving point block assembling structure

Technical Field

The utility model relates to a contactor technical field specifically is an assembly structure of moving point piece.

Background

The existing contactor generally comprises a push rod and a moving point block, and an insulating sleeve is arranged between the push rod and the moving point block, for example, the application number is CN201821278903.6, the name is "an improved contactor contact assembly", the insulating sleeve disclosed by the utility model can follow the moving point block to move along the push rod, so that the push rod and the moving point block are kept separated, so as to prevent the push rod from being electrified, but the moving point block drives the insulating sleeve to move along the push rod, the insulating sleeve can rub with the push rod, so as to generate insulating scraps, the generated insulating scraps are easily adhered to a contact of the contactor, the contact sensitivity of the contactor is reduced, the normal use of the contactor is influenced, and even the contactor fails.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of prior art, the utility model provides an assembly structure of moving point piece, it can prevent that insulating cover and push rod from taking place the friction, and then avoids insulating cover to produce insulating piece, is favorable to improving the use reliability of contactor.

The utility model adopts the following technical proposal.

The utility model provides an assembly structure of moving point piece, includes the push rod to and the cover locate the outside of push rod and with push rod sliding connection's moving point piece, be equipped with insulating cover between push rod and the moving point piece, be equipped with a wear-resisting section of thick bamboo between insulating cover and the push rod, a wear-resisting section of thick bamboo can follow up insulating cover along the push rod motion, insulating cover is including the cover body, the tip of the cover body extends along radial outside to form the spacing ring, the terminal surface looks butt of spacing ring and moving point piece, the outer fringe of spacing ring extends along the axial outside to form and climbs the electric cover.

Furthermore, the wear-resisting barrel comprises a barrel body, the inner diameter of the barrel body is in clearance fit with the outer diameter of the push rod, the end part of the barrel body extends outwards along the radial direction to form a positioning ring, and the positioning ring is abutted to the end face of the limiting ring.

Furthermore, the middle part of the push rod extends outwards along the radial direction to form a limiting shoulder, an overtravel spring is arranged between the limiting shoulder and the moving point block, the overtravel spring is sleeved on the outer side of the push rod, one end of the overtravel spring is abutted with a positioning ring of the wear-resistant cylinder, the other end of the overtravel spring is abutted with the limiting shoulder, and the compressed overtravel spring enables the moving point block to keep a trend of moving towards the head of the push rod.

Furthermore, be equipped with insulating seat between overtravel spring and the spacing shoulder, the outside of push rod is located to insulating seat cover, and insulating seat and the one end of overtravel spring looks butt offer the holding tank that is used for holding the overtravel spring.

Further, be equipped with the wear pad between the diapire of overtravel spring and holding tank.

Furthermore, the end part of the push rod is provided with a limit nut, and the outer diameter of the limit nut is smaller than the inner diameter of the creepage cover.

Furthermore, the insulation sleeve is an integral rubber injection molding structure

Furthermore, the wear-resistant cylinder is of a metal pipe punch forming structure.

The utility model has the advantages that:

the utility model provides a pair of move assembly structure of some piece, including push rod and move some piece, be equipped with insulating cover between push rod and the move some piece, be equipped with wear-resisting section of thick bamboo between insulating cover and the push rod, wear-resisting section of thick bamboo can follow the motion of insulating cover along the push rod of follow-up, thereby prevent that insulating cover and push rod from taking place the friction, and then avoid insulating cover to produce insulating piece, be favorable to improving the reliability in utilization of contactor, and insulating cover includes creepage cover, creepage cover is located between push rod and the move some piece, creepage distance between push rod and the move some piece has been increased, prevent the emergence of flashover phenomenon.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic structural diagram of the insulating sleeve of the present embodiment;

fig. 3 is a schematic structural view of the wear-resistant cylinder of the present embodiment.

Reference is made to the accompanying drawings in which:

1 push rod, 11 spacing shoulders, 2 move some pieces, 3 insulating covers, 31 cover bodies, 32 spacing rings, 33 creepage covers, 4 wear-resisting section of thick bamboos, 41 barrel, 42 holding rings, 5 over travel springs, 6 insulating seats, 61 holding tank, 7 wear pads, 8 stop nut.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent. It will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Referring to fig. 1 to 3, an assembly structure of a moving point block includes a push rod 1, and a moving point block 2 sleeved outside the push rod 1 and slidably connected to the push rod 1, an insulating sleeve 3 is disposed between the push rod 1 and the moving point block 2, a wear-resistant cylinder 4 is disposed between the insulating sleeve 3 and the push rod 1, the wear-resistant cylinder 4 can move along the push rod 1 along with the moving insulating sleeve 3, the insulating sleeve 3 includes a sleeve body 31, an end of the sleeve body 31 extends outward in a radial direction to form a limit ring 32, the limit ring 32 abuts against an end surface of the moving point block 2, so that the insulating sleeve 3 and the moving point block 2 are fixed in an axial direction, and an outer edge of the limit ring 32 extends outward in the axial direction to form a creepage cover 32.

Preferably, the wear-resistant cylinder 4 comprises a cylinder body 41, the inner diameter of the cylinder body 41 is in clearance fit with the outer diameter of the push rod 1, the end part of the cylinder body 41 extends outwards along the radial direction to form a positioning ring 42, and the positioning ring 42 is abutted against the end surface of the limiting ring 32, so that the wear-resistant cylinder 4 and the insulating sleeve 3 are fixed in the axial direction. Specifically, the outer diameter of the sleeve body 31 is in interference fit with the inner diameter of the movable point block 2, and the outer diameter of the cylinder 41 is in interference fit with the inner diameter of the sleeve body 31.

Preferably, the middle part of push rod 1 radially extends outwards to form spacing shoulder 11, be equipped with over travel spring 5 between spacing shoulder 11 and the moving point piece 2, the outside of push rod 1 is located to the cover of over travel spring 5, the one end of over travel spring 5 and the holding ring 42 looks butt of wear-resisting section of thick bamboo 4, can prevent over travel spring 5 and 3 frictions of insulating sleeve, and then avoid insulating cover 3 to produce insulating piece, over travel spring 5's the other end and spacing shoulder 11 looks butt, compressed over travel spring 5 makes moving point piece 2 keep having the trend towards the motion of push rod 1 head.

Preferably, be equipped with insulating seat 6 between overrun spring 5 and the spacing shoulder 11, insulating seat 6 covers the outside of locating push rod 1, and insulating seat 6 offers the holding tank 61 that is used for holding overrun spring 5 with the one end of overrun spring 5 looks butt. Wherein, the internal diameter of holding tank 61 slightly is greater than the external diameter of over travel spring 5, and the lateral wall of holding tank 61 plays limiting displacement to over travel spring 5, can prevent over travel spring 5 off tracking effectively.

Preferably, be equipped with wear pad 7 between the diapire of overtravel spring 5 and holding tank 61 to prevent that overtravel spring 5 and insulator seat 6 from taking place the friction, and then avoid insulator seat 6 to produce insulating piece.

Preferably, the head of push rod 1 is equipped with stop nut 8, thereby prevent that moving point piece 2 breaks away from push rod 1, stop nut 8's external diameter is less than the internal diameter of creepage cover 32, make stop nut 8 can be surrounded by creepage cover 32, thereby increased the creepage distance between stop nut 8 and the moving point piece 2, prevent the emergence of flashover phenomenon, and the holding ring 42 of wear-resisting section of thick bamboo 4 can avoid insulating cover 3 and stop nut 8 to take place direct collision, and then avoid insulating cover 3 to produce insulating piece.

Preferably, the insulating sleeve 3 is of a rubber integral injection molding structure.

Preferably, the wear-resistant cylinder 4 is a metal tube punch forming structure. Specifically, the prefabricated wear-resistant cylinder 4 is in a linear shape, and the end of the prefabricated wear-resistant cylinder 4 is turned outwards during the assembling process, so that the positioning ring 42 is formed. It will be appreciated that the metal tube may be a copper tube, in other embodiments an aluminum tube, or the like, as the copper tube has good ductility and is conveniently folded during assembly.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (8)

1. An assembly structure of a moving point block, comprising a push rod, and a moving point block that is sleeved on the outside of the push rod and is slidably connected to the push rod, an insulating sleeve is provided between the push rod and the moving point block, which It is characterized in that a wear-resistant cylinder is arranged between the insulating sleeve and the push rod. The wear-resistant cylinder can follow the movable insulating sleeve to move along the push rod. The insulating sleeve includes a sleeve body, and the end of the sleeve body is along a diameter. A limit ring is formed by extending outward, the limit ring is in contact with the end face of the moving point block, and the outer edge of the limit ring is axially extended outward to form a creepage cover. 2 . The assembling structure of the moving point block according to claim 1 , wherein the wear-resistant cylinder comprises a cylinder body, the inner diameter of the cylinder body is in clearance fit with the outer diameter of the push rod, and the end of the cylinder body is in clearance fit. 3 . The portion extends radially outward to form a positioning ring, and the positioning ring is in contact with the end surface of the limiting ring. 3 . The assembly structure of the moving point block according to claim 2 , wherein the middle part of the push rod extends radially outward to form a limit shoulder, and the space between the limit shoulder and the moving point block is 3 . There is an overtravel spring, the overtravel spring is sleeved on the outside of the push rod, one end of the overtravel spring is in contact with the positioning ring of the wear-resistant cylinder, and the other end of the overtravel spring is in contact with the limit shoulder, and the compressed overtravel The spring keeps the block in a tendency to move toward the head of the push rod. 4 . The assembly structure of a moving point block according to claim 3 , wherein an insulating seat is provided between the overtravel spring and the limiting shoulder, and the insulating seat is sleeved on the outer side of the push rod, 5 . An accommodating groove for accommodating the overtravel spring is opened at one end of the insulating seat abutting against the overtravel spring. 5 . The assembly structure of the moving point block according to claim 4 , wherein a wear-resistant pad is provided between the overtravel spring and the bottom wall of the accommodating groove. 6 . 6 . The assembling structure of the moving point block according to claim 1 , wherein the end of the push rod is provided with a limit nut, and the outer diameter of the limit nut is smaller than the inner diameter of the creepage cover. 7 . 7 . The assembly structure of a moving point block according to claim 1 , wherein the insulating sleeve is a rubber integral injection molding structure. 8 . 8 . The assembly structure of a moving point block according to claim 1 , wherein the wear-resistant cylinder is a metal tube stamping and forming structure. 9 .

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