CN-115547763-B - Leakage protector

CN115547763BCN 115547763 BCN115547763 BCN 115547763BCN-115547763-B

Abstract

The invention discloses an electric leakage protector which comprises a shell component, a button, a hook plate, a kick mechanism and a linkage piece, wherein a static contact is arranged in the shell component, the button is arranged on the shell component and is elastically connected with the shell component through a reset piece, the hook plate is respectively and movably connected with the button, the kick mechanism and the linkage piece, the kick mechanism is provided with a movable contact, an electromagnet is arranged in the shell component and comprises a movable iron core and a yoke iron, the movable iron core is movably matched with the linkage piece, when the button is pressed, the button is moved to be hooked with the hook plate, the hook plate drives the kick mechanism to move so as to enable the static contact to be quickly connected with the movable contact, and the hook plate drives the linkage piece to rotate so as to drive the movable iron core to be contacted with the yoke iron to be attracted, and the hooking state of the button and the hook plate is maintained. The invention improves the leakage protector, the movable contact and the static contact can be instantly connected with a certain contact pressure, solves the problem of poor connection caused by slow operation of the existing leakage protector, eliminates potential safety hazard and improves electricity safety.

Inventors

ZHENG CHUNKAI
LI ZIPING
LIAO JUN
TAN RUNHUA
WANG SIQI
LI HONGQING

Assignees

科都电气股份有限公司

Dates

Publication Date: 20260508
Application Date: 20220921

Claims (9)

1. A leakage protector, comprising: the shell assembly is internally provided with a static contact; The button is arranged on the shell assembly and is elastically connected with the shell assembly through a reset piece; The hook plate is arranged in the shell assembly and is movably connected with the button; The movable contact is arranged on the movable contact frame, the movable contact frame is rotatably arranged in the shell assembly and elastically abuts against the shell assembly, the hook plate is rotatably arranged on the unlocking piece through a jump elastic piece, the movable contact frame is provided with a locking state and an unlocking state, the locking piece is movably abutted against the movable contact frame to lock the movable contact frame in the locking state, and the locking piece is used for unlocking the movable contact frame in the unlocking state and the movable contact is contacted with the fixed contact; a linkage piece which is arranged in the shell component and is movably connected with the hook plate, and The electromagnet is arranged in the shell assembly and comprises a movable iron core and a yoke, and the movable iron core is movably matched with the linkage piece; When the button is pressed, the button moves to be hooked with the hook plate, the hook plate drives the kick mechanism to move so that the fixed contact is quickly connected with the movable contact, and the hook plate drives the linkage piece to rotate so as to drive the movable iron core to be contacted with the yoke iron to be attracted, and the hooking state of the button and the hook plate is maintained.
2. The earth leakage protector of claim 1, wherein the hooking plate is provided with a hooking portion hooked with the button and a first rotating shaft pivotally connected with the unlocking member, and the hooking portion is formed by a hooking surface provided on the hooking plate and a groove provided on a lower side of the hooking surface.
3. The earth leakage protector of claim 2, wherein said hook plate is provided with a side rib connected to said linkage, said side rib being disposed opposite said hooking portion.
4. The earth leakage protector of claim 2, wherein the button is provided with a hook adapted to be hooked with the hooking portion at a position corresponding to the hooking portion.
5. The leakage protector according to claim 2, wherein the locking piece is provided with a supporting portion, a side plate, a first boss and a second rotating shaft, the supporting portion is movably abutted against the movable contact frame to lock the movable contact frame, the side plate is movably abutted against the unlocking piece, the first boss is abutted against the housing assembly through a first elastic piece, and the second rotating shaft is pivotally connected with the housing assembly.
6. The earth leakage protector of claim 5, wherein said locking block is provided with a first stop block that snaps into said housing assembly to limit the range of rotation of said locking block.
7. The earth leakage protector of claim 5, wherein the movable contact frame is provided with a second limiting block in abutting fit with the supporting part, a through hole pivotally connected with the housing assembly, a first sliding groove and a second sliding groove in sliding fit with the unlocking piece, and a second boss, wherein the second boss is in abutting fit with the housing assembly through a second elastic piece.
8. The earth leakage protector of claim 7, wherein the unlocking member is provided with a pushing portion abutting against the locking piece, a sliding hook slidably provided in the first sliding groove or the second sliding groove, and a rotating shaft hole into which an end portion of the first rotating shaft is inserted.
9. The leakage protector according to claim 8, wherein the movable contact frame is provided with a containing groove for containing the snap elastic element, a third boss is arranged in the containing groove, the unlocking element is provided with a fourth boss opposite to the third boss, one end of the snap elastic element is sleeved on the third boss, and the other end of the snap elastic element is sleeved on the fourth boss.

Description

Leakage protector Technical Field The invention relates to the technical field of electromagnetic switch manufacturing, in particular to a leakage protector. Background The leakage protector, called leakage switch for short, is mainly used for protecting the life of life with fatal danger when the equipment has leakage fault, has overload and short-circuit protection function, can be used for protecting the overload and short circuit of the circuit or motor, and can also be used for starting the circuit without frequent conversion under normal condition. The existing leakage protector comprises a leakage detection device, a fixed contact, a reset button, a movable contact frame and the like, wherein the movable contact frame is hinged with the leakage detection device, and the movable contact frame is provided with a movable contact. However, many fault hidden dangers of the leakage protector are related to the operation speed, at the moment of switching on, the slow operation can lead to small contact pressure, even the contact can be in a state similar to the on-off state, at the moment, a high electric arc phenomenon can be generated, if a short circuit occurs, the electromagnetic switch is easy to burn or the contact is welded and stuck, and the function of safety protection cannot be achieved during the leakage. Disclosure of Invention The invention mainly aims to provide a leakage protector, which aims to enable a movable contact and a static contact to be instantly connected with a certain contact pressure, eliminate potential safety hazards and improve electricity utilization safety. To achieve the above object, the present invention provides a leakage protector, comprising: the shell assembly is internally provided with a static contact; The button is arranged on the shell assembly and is elastically connected with the shell assembly through a reset piece; The hook plate is arranged in the shell assembly and is movably connected with the button; The kick mechanism is arranged in the shell assembly and is movably connected with the hook plate, and the kick mechanism is provided with a movable contact; a linkage piece which is arranged in the shell component and is movably connected with the hook plate, and The electromagnet is arranged in the shell assembly and comprises a movable iron core and a yoke, and the movable iron core is movably matched with the linkage piece; When the button is pressed, the button moves to be hooked with the hook plate, the hook plate drives the kick mechanism to move so that the fixed contact is quickly connected with the movable contact, and the hook plate drives the linkage piece to rotate so as to drive the movable iron core to be contacted with the yoke iron to be attracted, and the hooking state of the button and the hook plate is maintained. Optionally, the kick mechanism comprises a locking piece, a movable contact frame and an unlocking piece movably arranged on the movable contact frame, wherein the locking piece is rotatably arranged in the shell assembly and is elastically connected with the movable contact frame, the movable contact is arranged on the movable contact frame, and the movable contact frame is rotatably arranged in the shell assembly and is elastically abutted with the shell assembly; The movable contact frame is provided with a locking state and an unlocking state, the locking block is movably abutted with the movable contact frame in the locking state so as to lock the movable contact frame, and the locking block is used for unlocking the movable contact frame in the unlocking state so as to enable the movable contact to be in contact with the stationary contact. Optionally, the hook plate is provided with a hooking portion hooked with the button and a first rotating shaft pivotally connected with the unlocking piece, and the hooking portion is composed of a hooking surface arranged on the hook plate and a groove positioned on the lower side of the hooking surface. Optionally, the hook plate is provided with a side rib connected with the linkage piece, and the side rib is arranged opposite to the hanging part. Optionally, a hook matched with the hook is arranged at the position of the button corresponding to the hooking part. Optionally, be equipped with supporting part, curb plate, first boss and second pivot on the locking piece, supporting part with movable contact frame activity butt is used for locking movable contact frame, the curb plate with unlocking piece activity butt, first boss through first elastic component with housing assembly butt, the second pivot with housing assembly pivoted connection. Optionally, the locking piece is provided with a first limiting block clamped in the shell component so as to limit the rotation range of the locking piece. Optionally, the movable contact frame has with the second stopper of supporting part butt adaptation, with the through-hole of casing subassembly pivoted connection, with unlocking piece