CN213988786U

CN213988786U - Backup protector

Info

Publication number: CN213988786U
Application number: CN202120267628.3U
Authority: CN
Inventors: 吕学学; 杨勇; 赵凯钒; 蒋天贞; 蔡君
Original assignee: Yueqing Yijin Electronic Co ltd
Current assignee: Yueqing Yijin Electronic Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-08-17
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a backup protector, which solves the problems of complex structure of an operating mechanism, more parts and the like. The tripping device comprises a shell, wherein an operating mechanism, an operating handle, a tripping mechanism and a static contact are arranged in the shell, the operating mechanism is in linkage fit with the operating handle, the tripping mechanism comprises a movable iron core which is ejected out when a circuit fault occurs, the operating mechanism comprises a contact support, a movable contact, a tripping buckle and a lock catch, the tripping buckle is in linkage connection with the operating handle through a U-shaped rod, and the lock catch and the tripping buckle form linkage fit; the moving contact is internally provided with a through hole, the end part of the lock catch extends to be provided with a contact hook, and the contact hook is arranged in the through hole in a penetrating way and is opposite to the moving iron core so as to form linkage fit. When touching the hook and receiving the ejecting pressure that moves the iron core, the hasp drives and jumps to detain the dropout, penetrates to the through-hole through touching the hook, can practice thrift the material of hasp, and structural design is compacter, and spare part reduces, saves space, occupies smallly, simple structure, and simple to operate improves installer's work efficiency.

Description

Backup protector

Technical Field

The utility model relates to an electrical accessories field specifically is a backup protector.

Background

The backup protector is used for protecting a fault when the main protection or the breaker fails. When this circuit is important, the backup protection can be installed on the same circuit as the main protection, i.e. there are several sets of protection on one circuit to ensure the safe operation of the circuit, and therefore the role of the backup protector is also very crucial. In the existing backup protector, the operating mechanism has a complex structure, a plurality of parts and is complex to assemble.

Disclosure of Invention

The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a backup protector, which solves the problems of complex structure of an operating mechanism, more parts and the like.

The technical scheme of the utility model: the operating mechanism is in linkage fit with the operating handle, the tripping mechanism comprises a movable iron core which is ejected out when a circuit fault occurs, the operating mechanism comprises a contact support, a movable contact, a trip buckle and a lock catch, the contact support and the movable contact are rotationally connected to the shell through a pin shaft, a torsional spring is sleeved outside the pin shaft, one end of the torsional spring abuts against the movable contact, the other end of the torsional spring abuts against the contact support, and the movable contact is in limit fit with the contact support; the contact support is integrally formed with a jump buckle shaft and a lock buckle shaft, the jump buckle and the lock buckle are respectively pivotally mounted on the contact support through the jump buckle shaft and the lock buckle shaft, the jump buckle is in linkage connection with the operating handle through a U-shaped rod, and the lock buckle and the jump buckle form linkage matching; the moving contact is internally provided with a through hole, the end part of the lock catch extends to be provided with a contact hook, and the contact hook is arranged in the through hole in a penetrating way and is opposite to the moving iron core so as to form linkage fit.

By adopting the technical scheme, when the contact hook receives the ejection pressure of the movable iron core, the lock catch drives the jump buckle to be tripped, the material of the lock catch can be saved by penetrating the contact hook into the through hole, the structural design is more compact, the parts are reduced, the space is saved, the occupied size is small, the structure is simple, the installation is convenient, and the working efficiency of an installer is improved.

The utility model discloses a further setting: the moving contact comprises a moving contact point and a moving contact support, the moving contact point is fixed at one end of the moving contact support, a blocking arm is arranged at the other end of the moving contact support, the blocking arm is abutted against the left side surface of the contact support to form limiting fit, a contact spring is arranged in the right side direction of the contact support, and two ends of the contact spring are abutted against the contact support and the shell; the through hole is positioned on the moving contact support, and one end of the torsion spring is propped against the inside of the moving contact support.

By adopting the further arrangement, the design is simpler, the contact surface for installing the torsion spring is increased, and the assembly is more convenient.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of the operating mechanism of the present invention;

fig. 3 is an exploded view of the operating mechanism of the present invention;

the device comprises a shell 1, an operating mechanism 2, an operating handle 3, a tripping mechanism 4, a static contact 5, a movable iron core 41, a contact support 21, a movable contact 22, a trip 23, a latch 24, a pin shaft 25, a torsion spring 26, a trip shaft 211, a latch shaft 212, a U-shaped rod 31, a through hole 221, a contact hook 241, a movable contact point 222, a movable contact support 223, a stop arm 224 and a contact spring 27.

Detailed Description

As shown in fig. 1-3, a backup protector includes a housing 1, an operating mechanism 2, an operating handle 3, a trip mechanism 4 and a static contact 5 are disposed in the housing 1, the operating mechanism 2 is in linkage fit with the operating handle 3, the trip mechanism 4 includes a movable iron core 41 ejected when a circuit fault occurs, the operating mechanism includes a contact support 21, a movable contact 22, a trip 23 and a latch 24, the contact support 21 and the movable contact 22 are rotatably connected to the housing 1 through a pin 25, the pin 25 is further externally sleeved with a torsion spring 26, one end of the torsion spring 26 abuts against the movable contact 22, the other end abuts against the contact support 21, and the movable contact 22 is in limit fit with the contact support 21; the jump buckle shaft 211 and the lock buckle shaft 212 are integrally formed on the contact support 21, the jump buckle 23 and the lock buckle 24 are respectively and pivotally arranged on the contact support 21 through the jump buckle shaft 211 and the lock buckle shaft 212, the jump buckle 23 is in linkage connection with the operating handle 3 through a U-shaped rod 31, and the lock buckle 24 and the jump buckle 23 form linkage matching; the moving contact 22 is provided with a through hole 221 therein, the end of the latch 24 is provided with a contact hook 241 in an extending manner, and the contact hook 241 is inserted into the through hole 221 and is opposite to the moving iron core 41 to form linkage fit. When the locking device is disassembled or assembled, the contact hook 241 is positioned in the movable contact 22, so that the locking buckle 24 has a certain limiting effect in the axial direction of the locking buckle shaft 212, the locking buckle 24 is not easy to be separated from the contact support 21 under the condition of no stress, and the convenience of disassembly and assembly is improved. When the moving contact 22 contacts with the static contact 5, the latch 24 is buckled with the jump buckle 23, the contact hook 241 is opposite to and close to the moving iron core 41, and the torsion spring 26 is in a spreading shape to make the moving contact 22 and the static contact 5 closely contact. When the circuit is in fault, the movable iron core 41 is ejected out, the contact hook 241 is pressed to drive the lock catch 24 to be disengaged from the jump buckle 23, the operating handle 3 returns, the contact support 21 drives the movable contact 22 to rotate around the pin shaft 25, and the movable contact 22 and the static contact 5 are separated.

The moving contact 22 comprises a moving contact point 222 and a moving contact support 223, the moving contact point 222 is fixed at one end of the moving contact support 223, the other end of the moving contact support 223 is provided with a blocking arm 224, the blocking arm 224 abuts against the left side surface of the contact support 21 to form a limit fit, a contact spring 27 is arranged between the contact support 21 and the housing, and two ends of the contact spring 27 abut against the contact support 21 and the housing 1; the through hole 221 is located on the movable contact support 223, and one end of the torsion spring 26 abuts against the movable contact support 223. During tripping, the contact support 21 is rotated around the pin 25 by the elastic force of the contact spring, the arm 224 is forced to rotate, and the movable contact point 222 is separated from the stationary contact 5.

Claims

1. The utility model provides a backup protector, including the casing, be provided with operating device, operating handle, tripping device and static contact in the casing, operating device and operating handle linkage cooperation, ejecting movable iron core when tripping device has circuit trouble, its characterized in that: the operating mechanism comprises a contact support, a moving contact, a trip buckle and a lock catch, the contact support and the moving contact are rotationally connected to the shell through a pin shaft, a torsional spring is sleeved outside the pin shaft, one end of the torsional spring abuts against the moving contact, the other end of the torsional spring abuts against the contact support, and the moving contact is in limit fit with the contact support; the contact support is integrally formed with a jump buckle shaft and a lock buckle shaft, the jump buckle and the lock buckle are respectively pivotally mounted on the contact support through the jump buckle shaft and the lock buckle shaft, the jump buckle is in linkage connection with the operating handle through a U-shaped rod, and the lock buckle and the jump buckle form linkage matching; the moving contact is internally provided with a through hole, the end part of the lock catch extends to be provided with a contact hook, and the contact hook is arranged in the through hole in a penetrating way and is opposite to the moving iron core so as to form linkage fit.

2. A backup protector according to claim 1, characterised in that: the moving contact comprises a moving contact point and a moving contact support, the moving contact point is fixed at one end of the moving contact support, a blocking arm is arranged at the other end of the moving contact support, the blocking arm is abutted against the left side surface of the contact support to form limiting fit, a contact spring is arranged in the right side direction of the contact support, and two ends of the contact spring are abutted against the contact support and the shell; the through hole is positioned on the moving contact support.