CN212033260U

CN212033260U - Elastic grounding piston ring

Info

Publication number: CN212033260U
Application number: CN202020658072.6U
Authority: CN
Inventors: 肖红升
Original assignee: Nantong Vocational College
Current assignee: Nantong Vocational College
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-11-27
Anticipated expiration: 2030-04-26

Abstract

An elastic grounding piston ring comprises an annular thin-wall gear ring formed by sequentially enclosing a plurality of inner teeth and a plurality of outer teeth, wherein the inner teeth and the outer teeth define a tooth width a in the axial direction of the annular thin-wall gear ring, and the tooth width a is 10-15 mm; a fillet R is machined in the tooth width a direction of the internal teeth, and the fillet R is 0.1-R0.5mm; the tooth width a direction of the external teeth is straight and has no round angle; the tooth root of the inner tooth and the tooth crest of the outer tooth are defined as the tooth full height b, the tooth full height b is 2-4 mm, and the pitch of the inner tooth and the outer tooth is 6-15 mm; the tooth root of internal tooth and the addendum of external tooth are defined as tooth thickness c in length direction, and tooth thickness c is 1 ~ 3 mm. Compared with the prior art, the utility model discloses an elasticity ground connection piston ring can realize that the plug bush passes through the reliable ground connection of socket sleeve, its stable in structure, simple to operate, and durable, conductivity can be good.

Description

Elastic grounding piston ring

Technical Field

The utility model relates to an electrical equipment accessory field specifically indicates an elasticity ground connection piston ring.

Background

The mining explosion-proof high-voltage cable connector is suitable for inflammable and explosive environments and is used for connecting cables at two ends and connecting the cables with electrical equipment; in order to improve the explosion-proof performance, the plug sleeve of the connector and the socket sleeve of the connector need to be electrically conducted, and after the socket sleeve is grounded, the grounding of the plug sleeve is realized; however, the existing connector is realized by micro interference fit between the plug sleeve and the socket sleeve, and the electrical conductivity between the plug sleeve and the socket sleeve is reduced after the plug sleeve and the socket sleeve are plugged for many times, so that the explosion-proof performance is reduced, and therefore, a grounding expansion ring which can be fully contacted and conducted with the plug sleeve and the socket sleeve simultaneously and can still keep the conductivity after the plug sleeve and the socket sleeve are plugged for many times is urgently needed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above-mentioned prior art not enough, and provide an elasticity ground connection piston ring.

In order to solve the technical problem, the utility model discloses a technical scheme is:

an elastic grounding piston ring comprises an annular thin-wall gear ring formed by sequentially enclosing a plurality of inner teeth and a plurality of outer teeth, wherein the inner teeth and the outer teeth define a tooth width a in the axial direction of the annular thin-wall gear ring, and the tooth width a is 10-15 mm; a fillet R is machined in the tooth width a direction of the internal teeth, and the fillet R is 0.1-R0.5mm; the tooth width a direction of the external teeth is straight and has no round angle; the tooth root of the inner tooth and the tooth crest of the outer tooth are defined as the tooth full height b, the tooth full height b is 2-4 mm, and the pitch of the inner tooth and the outer tooth is 6-15 mm; the tooth root of internal tooth and the addendum of external tooth are defined as tooth thickness c in length direction, and tooth thickness c is 1 ~ 3 mm.

Furthermore, the annular thin-walled gear ring is formed by extrusion of a phosphor bronze or beryllium copper thin-walled material, and the thickness of the phosphor bronze or beryllium copper thin-walled material is 0.15-0.4 mm.

Preferably, the tooth width a is 12 mm; the fillet R is 0.2 mm; the full height b of the teeth is 4mm, and the thickness c of the teeth is 2 mm.

Preferably, the annular thin-walled gear ring is formed by extrusion by adopting a phosphor bronze thin-walled material with the thickness of 0.4 mm.

Compared with the prior art, the utility model discloses an elasticity ground connection piston ring can realize that the plug bush passes through the reliable ground connection of socket sleeve, its stable in structure, simple to operate, and durable, conductivity can be good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view taken at line A-A of FIG. 1;

FIG. 3 is an enlarged view at FIG. 1B;

wherein, 1, inner teeth, 2 and outer teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below.

As shown in fig. 1 to 3, an elastic grounding piston ring comprises an annular thin-walled gear ring formed by sequentially enclosing a plurality of internal teeth 1 and a plurality of external teeth 2, wherein the internal teeth 1 and the external teeth 2 define a tooth width a in the axial direction of the annular thin-walled gear ring, and the tooth width a is 10 to 15 mm; a fillet R is machined in the tooth width a direction of the inner tooth 1, and the fillet R is 0.1-R0.5mm; the tooth width a direction of the external teeth is straight and has no round angle; the tooth root of the inner tooth 1 and the tooth crest of the outer tooth 2 are defined as the tooth full height b, the tooth full height b is 2-4 mm, and the pitch between the inner tooth 1 and the outer tooth 2 is 6-15 mm; the tooth root of internal tooth 1 and the addendum of external tooth 2 are defined as tooth thickness c in length direction, and tooth thickness c is 1 ~ 3 mm.

The annular thin-walled gear ring is formed by extrusion through a phosphor bronze or beryllium copper thin-walled material, and the thickness of the phosphor bronze or beryllium copper thin-walled material is 0.15-0.4 mm.

In the embodiment, the annular thin-walled gear ring is formed by extrusion by adopting a phosphor bronze thin-walled material with the thickness of 0.4 mm; after molding, the tooth width a is 12 mm; the fillet R is 0.2 mm; the full height b of the teeth is 4mm, and the thickness c of the teeth is 2 mm.

When the socket sleeve is used, the long-strip-shaped grounding piston ring blank is cut to be equal in length according to the circumferential length of the annular groove of the inner hole of the socket sleeve and is embedded into the annular groove, and the joint of the grounding piston ring can be welded by tin soldering, so that the assembly of the grounding piston ring is completed; the grounding piston ring is embedded into a ring groove in the inner wall of the socket sleeve, the plug sleeve penetrates through the grounding piston ring, the tooth top surface of the external tooth 2 of the grounding piston ring is in full contact conduction with the inner wall of the ring groove of the socket sleeve, and the tooth root surface of the internal tooth 1 of the grounding piston ring is in full contact conduction with the plug sleeve; the inner teeth 1 of the thin-walled gear ring are processed with round corners R in the width a direction, so that the plug sleeve can be conveniently inserted.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.

Claims

1. An elastic grounding piston ring, characterized in that: the gear comprises an annular thin-wall gear ring formed by sequentially enclosing a plurality of internal teeth and a plurality of external teeth, wherein the internal teeth and the external teeth define a tooth width a in the axial direction of the annular thin-wall gear ring, and the tooth width a is 10-15 mm; a fillet R is machined in the tooth width a direction of the inner teeth, and the fillet R is 0.1-0.5 mm; the tooth width a direction of the external teeth is straight and has no round angle; the tooth root of the inner tooth and the tooth crest of the outer tooth are defined as the tooth full height b, the tooth full height b is 2-4 mm, and the pitch of the inner tooth and the outer tooth is 6-15 mm; the tooth root of internal tooth and the addendum of external tooth are defined as tooth thickness c in length direction, and tooth thickness c is 1 ~ 3 mm.

2. The elastic grounding piston ring of claim 1, wherein: the annular thin-walled gear ring is formed by extrusion through a phosphor bronze or beryllium copper thin-walled material, and the thickness of the phosphor bronze or beryllium copper thin-walled material is 0.15-0.4 mm.

3. The elastic grounding piston ring of claim 1, wherein: the tooth width a is 12 mm; the fillet R is 0.2 mm; the full height b of the teeth is 4mm, and the thickness c of the teeth is 2 mm.

4. The elastic grounding piston ring of claim 2, wherein: the annular thin-walled gear ring is formed by extrusion by adopting a phosphor bronze thin-walled material with the thickness of 0.4 mm.