CN223911868U

CN223911868U - Spring-loaded American standard D-type copper pipe

Info

Publication number: CN223911868U
Application number: CN202520238850.9U
Authority: CN
Inventors: 吴瑞雄; 鞠春喜
Original assignee: Dongguan Well Shin Electronic Products Co Ltd
Current assignee: Dongguan Well Shin Electronic Products Co Ltd
Priority date: 2025-02-14
Filing date: 2025-02-14
Publication date: 2026-02-13
Anticipated expiration: 2035-02-14

Abstract

The utility model discloses a spring piece type American standard D-shaped ground copper pipe which comprises a metal pipe body, wherein one end of the metal pipe body is closed and provided with a wiring chuck, the other end of the metal pipe body is provided with a D-shaped opening, and two clamping spring pieces are symmetrically arranged on the metal pipe body corresponding to the inner side of the D-shaped opening. The utility model has reasonable structural design, skillfully provided with two clamping elastic pieces and positioned at the inner side of the D-shaped opening, when the jig is inserted into the prying test, the clamping elastic pieces just avoid the testing force points of the jig, the elastic pieces are not more influenced, still keep good clamping force, ensure the effective contact of the ground wire terminal, ensure the grounding protection, greatly improve the testing qualification rate passing the UL498-125 clause, and have simple integral structure, easy realization and wide popularization and application.

Description

Elastic D-shaped ground copper pipe

Technical Field

The utility model relates to the technical field of American standard sockets, in particular to a spring piece type American standard D-shaped ground copper pipe applied to the American standard socket.

Background

In the market, most of NEMA 5-15R,5-20R,6-15R,6-20R,7-15R,14-15ror 15-15R American standard socket products use the American standard D-shaped ground copper tubes with uniform straight structures, the inner walls are flat, when' Grounding Contact Test (ground contact test) of UL498-125 is carried out, after the NEMA 5-15R,5-20R,6-15R,6-20R,7-15R,14-15ror 15-15R is pried by a jig according to the test requirement in the clause, the wall bodies of the American standard D-shaped ground copper tubes are easily deformed, the clamping force is further reduced, the risk of test failure is increased in an intangible way, and finally the products cannot reach the qualified standard.

Disclosure of utility model

Aiming at the problems, the utility model aims to provide the elastic sheet type American-standard D-shaped ground copper pipe which is reasonable in structural design, has a clamping function and is good in contact effect.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

A D-shaped ground copper pipe with an elastic sheet type American gauge comprises a metal pipe body, wherein one end of the metal pipe body is closed and provided with a wiring chuck, the other end of the metal pipe body is provided with a D-shaped opening, and two clamping elastic sheets are symmetrically arranged on the metal pipe body and correspond to the inner side of the D-shaped opening.

As a preferable scheme of the utility model, the clamping elastic sheet is in an arc-shaped bulge shape, so that the clamping elastic sheet can more uniformly distribute pressure when being stressed while being beneficial to the plug and the test fixture to be plugged and pulled, and the stability and the reliability of clamping are improved.

As a preferable scheme of the utility model, the distance between the highest point of the bulge of the clamping elastic sheet and the D-shaped opening is 5-6mm, so that the testing force point of the testing jig is reasonably avoided, and the clamping effect is ensured.

As a preferable scheme of the utility model, the clamping elastic sheet and the metal pipe body are of an integrated connection structure, so that the clamping elastic sheet and the metal pipe body are connected more firmly and are not easy to damage.

As a preferable scheme of the utility model, grooves are arranged at the positions corresponding to the upper edge and the lower edge of the clamping elastic sheet, so that the clamping elastic sheet is easier to elastically deform when stressed, and the flexibility and the adaptability of clamping are improved. In addition, the grooving can also reduce the weight of the whole copper pipe and the cost.

As a preferable scheme of the utility model, the cross section of the wiring chuck is U-shaped, so that the wiring chuck can be conveniently placed into a wire core and then extruded and fixed.

As a preferable scheme of the utility model, a plurality of grooves are arranged on the inner wall of the wiring chuck. The friction force between the wiring clamping head and the wire core can be increased, and the wiring firmness is improved.

As a preferable scheme of the utility model, a hollowed-out part is arranged at the joint of the wiring chuck and the metal tube body. The weight of the whole copper pipe can be reduced, and the cost is reduced.

The utility model has the beneficial effects that the structure design is reasonable, the two clamping elastic pieces are skillfully arranged and positioned at the inner side of the D-shaped opening, when the jig is inserted into the prying test, the clamping elastic pieces just avoid the testing force point of the jig, the elastic pieces are not affected more, the better clamping force is still maintained, the effective contact of the ground wire terminal is ensured, the grounding protection is ensured, the testing qualification rate passing the UL498-125 clause is greatly improved, in addition, the whole structure is simple, the realization is easy, and the wide popularization and application are facilitated.

The utility model will be further described with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic cross-sectional view of the present utility model.

Fig. 3 is a schematic side view of the present utility model.

Fig. 4 is a schematic diagram of the structure of the present utility model at the time of testing.

Detailed Description

Referring to fig. 1 to 3, the present embodiment provides a shrapnel type D-shaped ground copper tube, which includes a metal tube body 1. One end of the metal pipe body 1 is closed and provided with a wiring chuck 2, the cross section of the wiring chuck 2 is preferably U-shaped, and the wiring chuck can be conveniently placed into a wire core and then extruded and fixed. Preferably, a plurality of grooves 21 are provided on the inner wall of the terminal block 2. The friction force between the wiring clamping head 2 and the wire core can be increased, and the wiring firmness is improved. And a hollowed-out part 6 is arranged at the joint of the wiring chuck 2 and the metal tube body 1. The weight of the whole copper pipe can be reduced, and the cost is reduced.

The other end of the metal tube body 1 is provided with a D-shaped opening 3, and two clamping elastic pieces 4 are symmetrically arranged on the metal tube body 1 corresponding to the inner side of the D-shaped opening 3. The cross section of the metal pipe body 1 is D-shaped, and two clamping elastic pieces 4 are specifically positioned on two opposite vertical walls of the metal pipe body 1. The clamping elastic sheet 4 is preferably in an arc-shaped protruding shape, so that the clamping elastic sheet 4 can more uniformly distribute pressure when being stressed while being beneficial to plug and test fixture insertion and extraction, and the stability and reliability of clamping are improved. Preferably, the distance D between the highest point of the protrusion of the clamping spring 4 and the D-shaped opening 3 is 5-6mm, so as to reasonably avoid the testing force point of the testing jig and ensure the clamping effect. The clamping elastic sheet 4 and the metal tube body 1 are preferably of an integral connection structure, so that the clamping elastic sheet 4 and the metal tube body 1 are connected more firmly and are not easy to damage. During production, the clamping elastic sheet 4 can be directly formed on the metal pipe body 1 by stamping and bending technology. Preferably, grooves 5 are provided at the positions corresponding to the upper and lower edges of the clamping spring 4, so that the clamping spring 4 is easier to elastically deform when being stressed, thereby increasing the flexibility and adaptability of clamping. In addition, the grooving 5 can reduce the weight of the whole copper pipe and the cost.

Referring to fig. 4, when the test fixture 7 is inserted into the prying test, the contact point of the test fixture 7 is at the front position of the clamping spring 4, although the clamping spring 4 at the upper position is pressed, but is not a test force point, the test force point is not affected much, and the clamping spring 4 at the lower position is not affected, so that the clamping force is effectively ensured, and the test qualification rate passing the UL498-125 clause is greatly improved.

Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way. As described in the above embodiments of the present utility model, copper pipe structures of other structures obtained by adopting the same or similar structures are all within the scope of the present utility model.

Claims

1. A spring-loaded American standard D-type copper grounding tube, comprising a metal tube body, characterized in that one end of the metal tube body is closed and provided with a wiring clamp, and the other end is provided with a D-shaped opening, and two clamping springs are symmetrically provided on the metal tube body corresponding to the inner position of the D-shaped opening.

2. The spring-loaded American standard D-type copper tube according to claim 1, characterized in that the clamping spring is an arc-shaped protrusion.

3. The spring-loaded American standard D-type copper tube according to claim 2, characterized in that the distance between the highest point of the protrusion of the clamping spring and the D-shaped opening is 5-6mm.

4. The spring-loaded American standard D-type copper tube according to claim 1, characterized in that the clamping spring and the metal tube body are integrally connected.

5. The spring-loaded American standard D-type copper tube according to claim 1, characterized in that grooves are provided at the upper and lower edges corresponding to the clamping spring.

6. The spring-loaded American standard D-type copper grounding pipe according to claim 1, characterized in that the cross-section of the wiring clamp is U-shaped.

7. The spring-loaded American standard D-type copper grounding pipe according to claim 6, characterized in that the inner wall of the wiring clamp is provided with a plurality of grooves.

8. The spring-loaded American standard D-type copper grounding tube according to claim 1 or 6, characterized in that a hollowed-out portion is provided at the connection between the wiring clamp and the metal tube body.