CN215869033U

CN215869033U - Surge backup protector

Info

Publication number: CN215869033U
Application number: CN202122494811.XU
Authority: CN
Inventors: 吴乐阳; 郑立夫
Original assignee: Zhejiang Baoming Electric Appliance Co ltd
Current assignee: Zhejiang Baoming Electric Appliance Co ltd
Priority date: 2021-10-16
Filing date: 2021-10-16
Publication date: 2022-02-18
Anticipated expiration: 2031-10-16

Abstract

The utility model relates to a surge backup protector which comprises a shell, an operating mechanism, a moving contact, a static contact, an electromagnetic trip, an arc extinguish chamber and a gas discharge tube, wherein the moving contact is in linkage fit with the operating mechanism, the operating mechanism comprises a handle rotationally arranged on the shell, a contact support rotationally arranged in the shell, a lock catch rotationally arranged on the contact support, a jump buckle rotationally arranged on the contact support and matched with the lock catch, and a pull rod arranged between the jump buckle and the lock catch, a locking hole is formed in the shell at a position corresponding to the handle, an arc-shaped locking groove matched with the locking hole is formed in the handle, the gas discharge tube is connected to one end of the static contact, and a conducting strip is arranged between the gas discharge tube and a connecting terminal. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly, safety and reliability.

Description

Surge backup protector

Technical Field

The utility model relates to a backup protector, in particular to a backup protector with a remote signaling function.

Background

The backup protector is used for protecting a fault when a main protector or a breaker fails. When a circuit fails, the protection on the circuit will momentarily signal the open element (e.g., a circuit breaker) of the circuit, and this immediate action protection is the main protection. When the main protection is not active for various reasons, after a short delay (the delay time is according to the requirements of each loop), another protection will start and act, and the fault loop will be tripped. This protection is the backup protection. The surge backup protector comprises a shell, an operating mechanism, a contact system, an arc extinguish chamber and a gas discharge tube, when the surge voltage exceeds the withstand voltage of a circuit system, the gas discharge tube is broken down to generate an arc discharge phenomenon, and the arc voltage is low and is only dozens of volts, so that the further rise of the surge voltage can be limited in a short time. The gas discharge tube limits surge voltage by using the principle and plays a role in overvoltage protection for a circuit. The operating mechanism of the existing surge backup protector is not provided with a protection structure, and the operating mechanism cannot be locked during maintenance, so that the personal safety of maintenance personnel cannot be guaranteed.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a surge backup protector which is simple in structure, stable and reliable in performance, convenient and fast to assemble, safe and reliable.

In order to achieve the purpose, the surge backup protector comprises a shell, an operating mechanism, a moving contact, a static contact, an electromagnetic release, an arc extinguish chamber and a gas discharge tube, wherein the moving contact is in linkage fit with the operating mechanism, the operating mechanism comprises a handle rotationally arranged on the shell, a contact support rotationally arranged in the shell, a lock catch rotationally arranged on the contact support, a jump buckle rotationally arranged on the contact support and matched with the lock catch, and a pull rod arranged between the jump buckle and the lock catch, a locking hole is formed in the shell corresponding to the handle, an arc-shaped locking groove matched with the locking hole is formed in the handle, the gas discharge tube is connected to one end of the static contact, and a conducting strip is arranged between the gas discharge tube and a connecting terminal.

The beneficial effect of above-mentioned structure is: be provided with on the casing with the handle on the arc lock groove matched with locking hole, when maintenance, maintenance personal can pass locking hole, arc lock groove with the locking lever to can lock the handle in the disconnection position, can guarantee maintenance personal's personal safety, the security is higher. And the gas discharge tube is connected between the wiring terminal and the static contact, and the gas discharge tube, the wiring terminal and the static contact can be integrated and modularized, so that the assembly is more convenient. Therefore, the surge protector has the advantages of simple structure, stable and reliable performance, convenient assembly, safety and reliability.

Particularly, a containing groove is formed in the shell and below the static contact corresponding to the static contact, the arc extinguishing chamber is clamped in the containing groove, an arc striking groove is formed in the containing groove and corresponds to the static contact, and the arc striking groove is communicated between the static contact and the arc extinguishing chamber. An arc striking groove is arranged between the arc extinguishing chamber and the static contact, and electric arcs can rapidly enter the arc extinguishing chamber along the arc striking groove, so that the arc extinguishing performance of the surge protector is improved.

Particularly, the moving contact is arranged on the contact support, a spring is arranged between the contact support and the moving contact, a containing groove for placing the spring is arranged on the contact support, a limiting column is arranged in the containing groove, one end of the spring is clamped on the limiting column, a limiting convex block is arranged on the moving contact, and the other end of the spring is clamped on the limiting convex block. The spring can increase the contact pressure of the moving contact, so that the moving contact and the fixed contact can be more reliably connected.

Particularly, one side of the lock catch is provided with an elastic piece matched with the shell, one end of the elastic piece is provided with a curved elastic body, the tail of the elastic body is abutted against the lug in the shell, and the elastic body is in limit fit with the lug. The elastic piece is arranged on the lock catch, so that the lock catch can be ensured to be reset reliably, and the working reliability of the surge protector is improved.

Particularly, the other end of the elastic element is provided with an inserting part, the lock catch is provided with a jack matched with the inserting part, and the inserting part is inserted in the jack and forms clamping matching of the elastic element and the lock catch. The elastic part is connected with the lock catch in a clamping matching mode, so that the elastic part and the lock catch are convenient to assemble, and the assembly is more convenient.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an internal structural view of the embodiment of the present invention.

Fig. 3 is an exploded view of an operating mechanism according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1 to 3, an embodiment of the utility model is a surge backup protector, which includes a housing 10, an operating mechanism 20, a movable contact 12, a fixed contact 13, an electromagnetic release 14, an arc extinguish chamber 15, and a gas discharge tube 16, wherein the movable contact 12, the fixed contact 13, the electromagnetic release 14, the arc extinguish chamber 15, and the operating mechanism 20 are in linkage fit, the operating mechanism 20 comprises a handle 21 rotatably arranged on the housing 10, a contact support 22 rotatably arranged in the housing 10, a lock catch 23 rotatably arranged on the contact support 22, a jump buckle 24 rotatably arranged on the contact support 22 and matched with the lock catch 23, and a pull rod 25 arranged between the jump buckle 24 and the lock catch 23, a locking hole 101 is arranged on the shell 10 corresponding to the handle 21, an arc locking groove 211 matched with the locking hole 101 is arranged on the handle 21, the gas discharge tube 16 is connected to one end of the fixed contact 13, and a conducting strip 18 is arranged between the gas discharge tube 16 and the connecting terminal 17.

As shown in fig. 2 and 3, a containing groove 102 is disposed in the housing 10 below the stationary contact corresponding to the stationary contact 13, the arc extinguishing chamber 15 is clamped in the containing groove 102, an arc striking groove 103 is disposed in the containing groove 102 corresponding to the stationary contact, and the arc striking groove 103 is communicated between the stationary contact 13 and the arc extinguishing chamber 15. An arc striking groove is arranged between the arc extinguishing chamber and the static contact, and electric arcs can rapidly enter the arc extinguishing chamber along the arc striking groove, so that the arc extinguishing performance of the surge protector is improved. The movable contact 12 is arranged on the contact support 22, a spring 26 is arranged between the contact support 22 and the movable contact 12, an accommodating groove 221 for placing the spring 26 is arranged on the contact support 22, a limiting column 222 is arranged in the accommodating groove 221, one end of the spring 26 is clamped on the limiting column 222, a limiting convex block 121 is arranged on the movable contact 12, and the other end of the spring 26 is clamped on the limiting convex block 121. The spring can increase the contact pressure of the moving contact, so that the moving contact and the fixed contact can be more reliably connected. One side of the lock catch 23 is provided with an elastic member 27 matched with the casing 10, one end of the elastic member 27 is provided with a curved elastic body 271, the tail of the elastic body 271 is abutted against a bump in the casing 10, and the elastic body 271 is in limit matching with the bump. The elastic piece is arranged on the lock catch, so that the lock catch can be ensured to be reset reliably, and the working reliability of the surge protector is improved. The other end of the elastic member 27 is provided with an insertion part 272, the lock catch 23 is provided with an insertion hole 231 matched with the insertion part 272, and the insertion part 272 is inserted in the insertion hole 231 and forms clamping matching of the elastic member 27 and the lock catch 23. The elastic part is connected with the lock catch in a clamping matching mode, so that the elastic part and the lock catch are convenient to assemble, and the assembly is more convenient.

Be provided with on the casing with the handle on the arc lock groove matched with locking hole, when maintenance, maintenance personal can pass locking hole, arc lock groove with the locking lever to can lock the handle in the disconnection position, can guarantee maintenance personal's personal safety, the security is higher. And the gas discharge tube is connected between the wiring terminal and the static contact, and the gas discharge tube, the wiring terminal and the static contact can be integrated and modularized, so that the assembly is more convenient. Therefore, the surge protector has the advantages of simple structure, stable and reliable performance, convenient assembly, safety and reliability.

Claims

1. The utility model provides a surge backup protector, includes casing, operating device, with operation operating device linkage complex moving contact, static contact, electromagnetism release, explosion chamber, gas discharge tube, its characterized in that: the operating mechanism comprises a handle rotatably arranged on the shell, a contact support rotatably arranged in the shell, a lock catch rotatably arranged on the contact support, a jump buckle rotatably arranged on the contact support and matched with the lock catch, and a pull rod arranged between the jump buckle and the lock catch, wherein a locking hole is formed in the shell corresponding to the handle, an arc-shaped locking groove matched with the locking hole is formed in the handle, the gas discharge tube is connected to one end of the static contact, and a conducting strip is arranged between the gas discharge tube and the connecting terminal.

2. The surge backup protector of claim 1, wherein: the arc striking device is characterized in that a containing groove is formed in the shell and below the stationary contact corresponding to the stationary contact, the arc striking chamber is clamped in the containing groove, an arc striking groove is formed in the containing groove and corresponds to the stationary contact, and the arc striking groove is communicated between the stationary contact and the arc striking chamber.

3. A surge backup protector according to claim 1 or 2, wherein: the movable contact is arranged on the contact support, a spring is arranged between the contact support and the movable contact, a containing groove for containing the spring is arranged on the contact support, a limiting column is arranged in the containing groove, one end of the spring is clamped on the limiting column, a limiting convex block is arranged on the movable contact, and the other end of the spring is clamped on the limiting convex block.

4. A surge backup protector according to claim 1 or 2, wherein: one side of hasp on be provided with casing matched with elastic component, one of elastic component serve and be the elastomer of curve form, the afterbody of elastomer is contradicted on the lug in the casing, and constitutes the spacing cooperation of elastomer and lug.

5. The surge backup protector of claim 4, wherein: the other end of the elastic piece is provided with an inserting part, the lock catch is provided with a jack matched with the inserting part, and the inserting part is inserted in the jack and forms clamping matching of the elastic piece and the lock catch.