CN212848286U

CN212848286U - High-voltage fuse of integral structure

Info

Publication number: CN212848286U
Application number: CN202022084224.9U
Authority: CN
Inventors: 曲家兴; 朱帅; 于航; 吴江; 赵洪军
Original assignee: Liaoning Dongda Power Technology Co ltd
Current assignee: Liaoning Dongda Power Technology Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-03-30
Anticipated expiration: 2030-09-22

Abstract

The utility model provides a high-voltage fuse of integral structure, include: the device comprises a compression joint bolt, an outer eave, a lower extension pipe, a fuse piece compression joint hole and a fuse piece, wherein the compression joint bolt is arranged in the outer eave; the crimping bolt is embedded into the outer eaves, the lower extension pipe is connected to the lower eaves, a fuse piece crimping hole is formed in the lower extension pipe, and the fuse piece is placed into the fuse piece crimping hole. The utility model discloses with the binding post head end, the lead wire head designs into an organic whole structure and cancels two parts of lead wire and crimping copper pipe, make the structure fuse eliminate three and connect the point of generating heat, the structure reduces to two parts from five parts, the tie point between integration lead wire head and the fuse-link promptly, former four tie points become only one tie point, only one is connected the point of generating heat and is also lower to the technological requirement, effectively prevented the fuse because of the fault-breaking problem of fuse in advance that generates heat, the fusing rate of accuracy of product has effectively been promoted.

Description

High-voltage fuse of integral structure

Technical Field

The utility model relates to a high-voltage fuse field especially relates to a high-voltage fuse of integral structure.

Background

The high-voltage fuse is used for protecting components such as a high-voltage capacitor and the like, and the main principle is that the high-voltage fuse fuses after a specified value is reached by generating heat through a fuse element through current, so that the high-voltage fuse is used as overcurrent fuse protection. The heat generated by the fuse is a determining factor of the product quality, and the variable heat is mainly generated from the connection points among the parts besides the fixed heat generated by the self-resistance of each part.

The connecting part at the upper end of the original typical fuse is a connection head end, a lead head, an upper lead, a compression joint copper pipe and a fuse element in sequence, namely, four connecting points exist, and the first contact point (namely, the connection head end and the lead head) is connected in a compression joint mode, so that the process requirement on the flatness of the contact surfaces of two parts is extremely high, if the flatness is not enough, the surface contact of the two parts is changed into point contact, the resistance is sharply increased, the heating of the connecting point is serious, the problem of mistaken breaking of the fuse due to fuse in advance is caused, the circuit can be powered off, and the great economic loss is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a high-voltage fuse of integral structure.

The utility model provides a technical scheme is: a high voltage fuse of unitary construction, comprising: the device comprises a compression joint bolt, an outer eave, a lower extension pipe, a fuse piece compression joint hole and a fuse piece, wherein the compression joint bolt is arranged in the outer eave;

the crimping bolt is embedded into the outer eaves, the lower extension pipe is connected to the lower eaves, a fuse piece crimping hole is formed in the lower extension pipe, and the fuse piece is placed into the fuse piece crimping hole.

Preferably, the outer eaves and the lower extension pipe are of an integrated structure.

Further preferably, the fuse piece and the fuse piece crimping hole are formed by crimping through a hydraulic press device by using a die.

Preferably, the inner wall of the outer eave is provided with threads, and the compression joint bolt is screwed into the outer eave in a rotating mode.

Preferably, the outer side of the lower end of the outer eave is provided with a thread.

More preferably, the outer eaves are hexagonal outer eaves.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses the structure festival is simple, high durability and convenient operation, with the connector lug end, the connector lug designs into an organic whole structure and cancels two parts of lead wire and crimping copper pipe, make the structure fuse eliminate three and connect the point of generating heat, the structure reduces to two parts from five parts, tie point between integration connector lug and the fuse promptly, former four tie points become only one tie point, only one is connected the point of generating heat and is also lower to the technological requirement, the fuse has effectively been prevented because of the fault problem of the fuse that generates heat in advance, the fusing rate of accuracy of product has effectively been promoted.

Drawings

Fig. 1 is a schematic side view of a high-voltage fuse of an integrated structure according to the present invention;

fig. 2 is a schematic view of a high-voltage fuse in an integrated structure according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 2, the present embodiment provides a high-voltage fuse of an integrated structure, including: the device comprises a crimping bolt 1, an outer eave 2, a lower extension pipe 3, a fuse part crimping hole 4 and a fuse part 5, wherein the fuse part is fixedly connected with the lower extension pipe;

the crimping bolt 1 is embedded into the outer eave 2, the lower extension pipe 3 is connected to the lower eave 2, a fuse pressing hole 4 is formed in the lower extension pipe 3, and the fuse 5 is placed into the fuse pressing hole 4.

In order to reduce the connection point between the components, as an improvement of the technical scheme, the outer eaves 2 and the lower extension pipe 3 are of an integral structure, so that the connection point is reduced to be only one connection point, namely the connection point between the lower extension pipe 3 and the fuse link 5.

As an improvement of the technical scheme, the fuse part 5 and the fuse part crimping hole 4 are subjected to crimping forming through hydraulic press equipment by using a die.

As the improvement of the technical scheme, the inner wall of the outer eave 2 is provided with threads, and the compression joint bolt 1 is screwed into the outer eave 2 through rotation.

As the improvement of the technical proposal, the outer side of the lower end of the outer eave 2 is provided with screw threads.

As the improvement of the technical scheme, the outer eave 2 is a hexagonal outer eave.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A high voltage fuse of unitary construction, comprising: the device comprises a crimping bolt (1), an outer eave (2), a lower extension pipe (3), a fuse piece crimping hole (4) and a fuse piece (5), wherein the outer eave is connected with the lower extension pipe through the lower extension pipe;

the crimping bolt (1) is embedded into the outer eaves (2), the lower extension pipe (3) is connected to the lower eaves (2), a fuse piece crimping hole (4) is formed in the lower extension pipe (3), and the fuse piece (5) is placed into the fuse piece crimping hole (4).

2. A structurally integrated high-voltage fuse as claimed in claim 1, characterized in that the outer edge (2) and the down pipe (3) are of an integrated structure.

3. A structurally integrated high-voltage fuse as claimed in claim 1, characterized in that said fuse element (5) and said fuse element crimping hole (4) are formed by press-fitting with a die by means of a hydraulic press apparatus.

4. A structurally integrated high-voltage fuse as claimed in claim 1, characterized in that the inner wall of the outer flange (2) is provided with a thread, and the crimp bolt (1) is screwed into the outer flange (2) by rotation.

5. A structurally integrated high-voltage fuse as claimed in claim 1, characterized in that the outer side of the lower end of the outer edge (2) is threaded.

6. A structurally integrated high-voltage fuse as claimed in claim 1, characterized in that said outer eaves (2) are hexagonal.