Integrated full-range high-voltage fuse

Abstract

The integrated full-range high-voltage fuse comprises a sleeve, a contact, a shielding layer, a sealing end cover and a microswitch, one end of the sleeve is in threaded connection with the contact, the other end of the sleeve is in threaded connection with the sealing end cover, the full-range fuse is arranged in the sleeve, and the microswitch is arranged in the full-range fuse. One end of the full-range fuse is sleeved with a spring seat and then is in threaded connection with a locking ring, the spring seat is sleeved with a contact finger spring, the other end of the full-range fuse is in threaded connection with a second spring seat, the second spring seat is connected with one end of an insulating pull rod in an inserted mode, and the insulating pull rod is arranged in a sleeve. And a second contact finger spring is sleeved outside the second spring seat. The two ends of the fuse adopt the contact finger springs, so that the contact part of the full-range fuse is reduced, and heat is easy to dissipate.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuses, and in particular relates to an integrated full-range high-voltage fuse. Background Art

[0002] The fuse is a resistive heating element. When current flows through it, it will generate heat. The resistance and power consumption increase, which will generate a lot of heat. The heat will gather in the middle of the fuse. Regardless of whether the fuse is installed horizontally or vertically, the highest temperature point is located in the middle of the fuse, basically in the middle of the bushing. The temperature at this position is the highest and it is also the heat source. The outside of the bushing is in high-temperature transformer oil. After running for a long time, the conductive position in the middle with the highest temperature will definitely decay and age the fastest and most seriously. Therefore, the failure rate of the middle position of the fuse is significantly higher than that at both ends. Utility Model Content

[0003] The utility model provides an integrated full-range high-voltage fuse, which is used to solve the technical problems of the prior art in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an integrated full-range high-voltage fuse, comprising: a sleeve, a contact, a shielding layer, a sealed end cover, and a micro switch. One end of the sleeve is threadedly connected to the contact, and the other end of the sleeve is threadedly connected to the sealed end cover. A full-range fuse is arranged inside the sleeve, and a spring seat is sleeved on the outside of one end of the full-range fuse and then threadedly connected to a locking ring. A contact finger spring is sleeved on the outside of the spring seat, and the other end of the full-range fuse is threadedly connected to a second spring seat. The second spring seat is plugged into one end of an insulating pull rod. The insulating pull rod is arranged inside the sleeve, and a second contact finger spring is sleeved on the outside of the second spring seat.

[0005] Preferably, the finger contact springs are annular, and the finger contact springs are in two groups.

[0006] Preferably, the second finger contact springs are annular, and the second finger contact springs are divided into two groups.

[0007] Preferably, the other end of the insulating pull rod is fixedly connected to a connector, the outer portion of the connector is threadedly connected to a first connecting rod, and the center of the first connecting rod is threadedly connected to a micro switch.

[0008] Preferably, the other end of the insulating pull rod is threadedly connected to a second connecting rod, one end of the second connecting rod abuts against one end of a spring, and the other end of the spring abuts against the end surface of the connector.

[0009] Preferably, a flange is sleeved on the outside of the sleeve, and a sealing ring is installed at one end of the flange.

[0010] Preferably, the fuse further comprises: a wiring terminal and a bolt assembly, wherein the bolt assembly is installed between the shielding layer and the sleeve, and the wiring terminal is sleeved on the outside of the bolt assembly.

[0011] Beneficial effects of the utility model:

[0012] The integrated full-range high-voltage fuse of the present invention adopts contact springs at both ends of the fuse, which reduces the contact part of the contact full-range fuse, makes it easy to dissipate heat, and can greatly reduce the operation risk of the fuse. The heat dissipation performance is significantly increased at both ends, so the temperature in the middle will also be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall schematic diagram of the integrated full-range high-voltage fuse proposed by the utility model;

[0014] Figure 2 This is an overall schematic diagram of the integrated full-range high-voltage fuse proposed by the utility model;

[0015] Figure 3 This is a partial structural diagram of the integrated full-range high-voltage fuse proposed by the utility model. Figure 1 ;

[0016] Figure 4 This is a partial structural diagram of the integrated full-range high-voltage fuse proposed by the utility model. Figure 2 ;

[0017] Figure 5 This is a partial structural diagram of the integrated full-range high-voltage fuse proposed by the utility model. Figure 3 .

[0018] In the figure: a terminal block (1), a sleeve (2), a contact (3), a shielding layer (4), a bolt assembly (5), a flange (6), a sealing end cover (7), a micro switch (8), a finger spring (9), a spring seat (10), a locking ring (12), a full-range fuse (13), an insulating pull rod (14), a second finger spring (15), a second spring seat (16), a first connecting rod (18), a sealing ring (19), a second connecting rod (20), a spring (21), and a connecting body (22). DETAILED DESCRIPTION

[0019] Specific embodiments of the present invention will now be fully described with reference to the accompanying drawings. For clarity, many physical details will be included in the following description. However, it should be understood that these physical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not essential. Furthermore, to simplify the illustrations, some commonly used structures and components are depicted in a simplified schematic manner.

[0020] The utility model Figures 1 to 5 As shown, the integrated full-range high-voltage fuse of the present invention includes: a sleeve 2, a contact 3, a shielding layer 4, a sealed end cover 7, and a micro switch 8. One end of the sleeve 2 is threadedly connected to the contact 3, and the other end of the sleeve 2 is threadedly connected to the sealed end cover 7. A full-range fuse 13 is arranged inside the sleeve 2, and a spring seat 10 is sleeved on the outside of one end of the full-range fuse 13 and then threadedly connected to a locking ring 12. A contact finger spring 9 is sleeved on the outside of the spring seat 10, and the other end of the full-range fuse 13 is threadedly connected to a second spring seat 16. The second spring seat 16 is plugged into one end of an insulating pull rod 14. The insulating pull rod 14 is arranged inside the sleeve 2, and a second contact finger spring 15 is sleeved on the outside of the second spring seat 16.

[0021] Furthermore, the finger contact springs 9 are annular, and there are two groups of finger contact springs 9 .

[0022] Furthermore, the second contact finger springs 15 are annular, and the second contact finger springs 15 are divided into two groups.

[0023] Furthermore, the other end of the insulating pull rod 14 is fixedly connected to the connector 22, the outer thread of the connector 22 is connected to the first connecting rod 18, and the center thread of the first connecting rod 18 is connected to the micro switch 8. The micro switch 8 is electrically connected to the full range fuse 13, and the model of the micro switch 8 is AZ7310.

[0024] Furthermore, the other end of the insulating pull rod 14 is threadedly connected to the second connecting rod 20, one end of the second connecting rod 20 abuts against one end of a spring 21, and the other end of the spring 21 abuts against the end surface of the connector 22. The spring 21 provides a pre-tightening force to the connector 22, making it difficult for the connector 22 to fall off.

[0025] Furthermore, a flange 6 is sleeved on the exterior of the sleeve 2, with a sealing ring 19 mounted on one end of the flange 6. The sleeve 2 is made of insulating material. The flange 6 is used for external connection and secures the integrated full-range high-voltage fuse of the present utility model. The sealing ring 19 is used to seal the connection.

[0026] Furthermore, the fuse further includes: a terminal block 1 and a bolt assembly 5. The bolt assembly 5 is installed between the shielding layer 4 and the sleeve 2, and the terminal block 1 is externally mounted on the bolt assembly 5. The terminal block 1, the contact 3, and the bolt assembly 5 are all made of conductive materials. The terminal block 1 is externally mounted on the bolt assembly 5. The terminal block 1 is located between the shielding layer 4 and the sleeve 2, and the terminal block 1 extends beyond the shielding layer 4. The bolt assembly 5 includes a bolt and a nut. The bolt is threadedly connected to the sleeve 2, and the nut is threadedly connected to the bolt. The end face of the nut is pressed against the terminal block 1. The bolt assembly provides electrical continuity between the terminal block 1 and the full-range fuse 13.

[0027] Example: During use, microswitch 8 is used to connect to an external circuit. Normally, microswitch 8 is in the normally open state. When full-range fuse 13 is disconnected, microswitch 8 closes, completing the external circuit connection and providing a signal to disconnect full-range fuse 13. Terminals 1 and contacts 3 are connected to the positive and negative poles of a transformer, providing overcurrent protection for the transformer.

[0028] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. Integrated full range high voltage fuse, characterized by: include: A sleeve (2), a contact (3), a shielding layer (4), and a sealing end cover (7); one end of the sleeve (2) is threadedly connected to the contact (3); the other end of the sleeve (2) is threadedly connected to the sealing end cover (7); a full-range fuse (13) is arranged inside the sleeve (2); a spring seat (10) is sleeved on one end of the full-range fuse (13) and then threadedly connected to a locking ring (12); a finger spring (9) is sleeved on the outside of the spring seat (10); the other end of the full-range fuse (13) is threadedly connected to a second spring seat (16); the second spring seat (16) is plugged into one end of an insulating pull rod (14); the insulating pull rod (14) is arranged inside the sleeve (2); and a second finger spring (15) is sleeved on the outside of the second spring seat (16).

2. The fuse according to claim 1, wherein: The finger contact springs (9) are annular, and the finger contact springs (9) are in two groups.

3. The fuse according to claim 1, wherein: The second finger contact spring (15) is annular, and the second finger contact spring (15) is in two groups.

4. The fuse according to claim 1, wherein: The other end of the insulating pull rod (14) is fixedly connected to a connector (22), the external thread of the connector (22) is connected to a first connecting rod (18), and the center thread of the first connecting rod (18) is connected to a micro switch (8).

5. The fuse according to claim 1, wherein: The other end of the insulating pull rod (14) is threadedly connected to the second connecting rod (20), one end of the second connecting rod (20) is against one end of the spring (21), and the other end of the spring (21) is against the end surface of the connecting body (22).

6. The fuse according to claim 1, wherein: A flange (6) is sleeved on the outside of the sleeve (2), and a sealing ring (19) is installed at one end of the flange (6).

7. The fuse according to claim 1, wherein: Also includes: A wiring terminal (1) and a bolt assembly (5), wherein the bolt assembly (5) is installed between a shielding layer (4) and a sleeve (2), and the wiring terminal (1) is sleeved on the outside of the bolt assembly (5).

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