CN111952133A - Leakage protector with automatic reset - Google Patents

Abstract

The invention relates to a leakage protector with automatic reset, which realizes switching control of the state of a locking plate through the introduction of the locking plate and the action coordination of a reset rod and a reset relay, further realizes state control of a movable contact spring plate connected with the locking plate, and realizes switching of two states of contact power-on and separation power-off between the movable contact spring plate and a stationary contact.

Description

Leakage protector with automatic reset

Technical Field

The invention relates to an electric element, in particular to a leakage protector with an automatic reset function.

Background

The leakage protector, called leakage breaker for short, is mainly used for protecting the electric shock of human body with fatal danger when the equipment has leakage fault, has the functions of overload and short circuit protection, can be used for protecting the overload and short circuit of a circuit or a motor, and can also be used for the infrequent switching and starting of the circuit under normal conditions. However, in the conventional earth leakage protector, when the earth leakage protector is reset, the earth leakage protector needs to be considered to be reset, and cannot be remotely operated, which causes difficulty in daily circuit maintenance and cannot be remotely reset when a fault is eliminated.

Disclosure of Invention

The invention aims to provide a leakage protector with an automatic reset function, which can realize the automatic reset after triggering protection of the leakage protector while finishing the normal circuit protection function, and has simple integral structure and low failure rate.

In order to achieve the purpose, the invention adopts the technical scheme that:

the invention provides a leakage protector with automatic reset, which comprises a shell for packaging, a tripping relay, a tripping iron core, a movable contact spring sheet and a stationary contact, wherein the tripping relay and the tripping iron core are used for switching the contact state between the movable contact spring sheet and the stationary contact, the leakage protector also comprises a reset rod, a reset pressure rod, a reset relay, a reset iron core, a reset relay spring, a reset spring, a lock plate and a cross rod, a vertical first limit cavity is arranged in the shell, the reset rod is movably arranged in the first limit cavity, the bottom of the vertical cavity is vertically provided with the reset spring for pushing the reset rod, the upper part of the reset rod is rotatably fixed with the reset pressure rod, the reset pressure rod and the reset rod are arranged in a crossed way, and the middle part of the reset pressure rod is connected with the reset rod through a rotating shaft, the utility model discloses a reset device, including reset iron core, reset spring, tripping iron core, locking plate, movable contact shell fragment, reset rod, reset relay, release relay, tripping iron core and movable contact shell fragment, the one end of reset rod is fixed, the other end with the one end of reset iron core links to each other, reset relay is used for driving the vertical removal of reset iron core, reset spring set up in reset iron core with between reset relay's the messenger enables the contact, the lower part of reset rod is provided with the hasp that the dead locking plate of spacing lock was used, the locking plate have with hasp matched with spring bolt, the side of locking plate links to each other with tripping iron core, tripping relay is used for driving tripping iron core action, tripping iron core drives the locking plate translation, the locking plate with the horizontal pole is connected.

Optionally, the reset iron core is disposed substantially parallel to the reset lever.

Optionally, a second limiting cavity is formed in the shell in parallel with the first limiting cavity, the reset iron core and the reset spring are arranged in the second limiting cavity, the reset relay is arranged at the bottom of the second limiting cavity, and the reset iron core drives the reset pressure rod to rotate and press the reset rod to move downwards.

Optionally, the lock catch at the lower part of the reset rod is a notch clamping groove through which the lock tongue can pass.

Optionally, the trip core is perpendicular to the reset rod, the trip relay drives the trip core to move, and a trip relay spring is arranged between the trip relay and the trip core.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the leakage protector with the automatic reset function is used for switching and controlling the states of the locking plate by introducing the locking plate, further realizing the state control of the movable contact spring plate connected with the locking plate and realizing the switching of the contact power-on state and the separation power-off state between the movable contact spring plate and the static contact.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic cross-sectional view of a leakage protector according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of the earth leakage protector shown in fig. 1.

Wherein the reference numerals are as follows:

1. the tripping device comprises a shell, 2, a tripping relay, 3, a tripping iron core, 4, a movable contact elastic sheet, 5, a stationary contact, 6, a reset rod, 7, a reset pressure rod, 8, a reset relay, 9, a reset iron core, 10, a reset relay spring, 11, a reset spring, 12, a locking plate, 13, a cross rod, 14, a first limit cavity, 15, a second limit cavity, 16 and a tripping relay spring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The embodiment describes a leakage protector with an automatic reset function, as shown in fig. 1 and fig. 2, the leakage protector includes a casing 1 for packaging, a trip relay 2, a trip iron core 3, a movable contact spring 4 and a stationary contact 5, the trip relay 2 and the trip iron core 3 are used for switching a contact state between the movable contact spring 4 and the stationary contact 5, the trip iron core 3 is perpendicular to the reset rod, the trip relay 2 drives the trip iron core 3 to move, and a trip relay spring 16 is arranged between the trip relay 2 and the trip iron core 3.

The leakage protector further comprises a reset rod 6, a reset pressure rod 7, a reset relay 8, a reset iron core 9, a reset relay spring 10, a reset spring 11, a lock plate 12 and a cross rod 13, wherein a vertical first limit cavity 14 is arranged in the shell 1, the reset rod 6 is movably arranged in the first limit cavity 14, the bottom of the vertical cavity is vertically provided with the reset spring 11 for pushing the reset rod 6, the upper part of the reset rod 6 is rotatably fixed with the reset pressure rod 7, the reset pressure rod 7 and the reset rod 6 are arranged in a crossed manner, the middle part of the reset pressure rod 7 is connected with the reset rod 6 through a rotating shaft, one end of the reset pressure rod 7 is fixed, the other end of the reset pressure rod is connected with one end of the reset iron core 9, the reset relay 8 is used for driving the reset iron core 9 to vertically move, the reset spring 11 is arranged between the reset iron core 9 and an enable contact of the reset relay 8, the lower part of release link 6 is provided with the hasp that dead locking plate 12 of spacing lock was used, locking plate 12 have with hasp matched with spring bolt, the side of locking plate 12 links to each other with dropout iron core 3, tripping relay 2 is used for driving the action of dropout iron core 3, dropout iron core 3 drives locking plate 12 translation, locking plate 12 with horizontal pole 13 is connected, horizontal pole 13 with movable contact shell fragment 4 is connected, movable contact shell fragment 4 drives when the outage is tripped horizontal pole 13 and locking plate 12 remove and movable contact shell fragment 4 and stationary contact 5 phase separation.

The reset iron core 9 is arranged substantially parallel to the reset lever 6. Specifically, a second limit cavity 15 is arranged in the housing 1 in parallel to the first limit cavity 14, the reset iron core 9 and the reset spring 11 are arranged in the second limit cavity 15, the reset relay 8 is arranged at the bottom of the second limit cavity 15, and the reset iron core 9 drives the reset pressure rod 7 to rotate and press the reset rod 6 to move downwards.

The lock catch at the lower part of the reset rod 6 is a notch clamping groove which can allow the lock tongue to pass through.

The theory of operation of earth-leakage protector of this embodiment to its realization function, can include two kinds of behavior of power-off protection and automatic re-setting, to these two functions, combines the product structure, explains its theory of operation as follows.

The earth-leakage protector of this embodiment is when power-off protection, when the product received outage instruction (external signal or self signal), tripping relay 2 received trigger signal, instantaneous circular telegram, tripping relay under the on-state produced magnetic force, rely on magnetic force pulling tripping core 3, tripping core 3 compressed tripping relay spring 16 drives locking plate 12 and pulls out from the hasp of release lever 6 lower part simultaneously, release lever 6 has just lost the binding power to locking plate 12 this moment, under the effect of movable contact shell fragment 4 self elastic force, make the contact on the movable contact shell fragment 4 separate the outage with stationary contact 5, realize earth-leakage protector's power-off protection function. When the movable contact spring 4 acts under the action of self elasticity, the movable contact spring 4 drives the cross arm to descend, and then the locking plate 12 can be driven to descend, after the tripping relay 2 is powered off, the tripping relay spring 16 pushes the tripping iron core 3 to drive the locking plate 12 to move to a blocking position under the action of the elasticity of the tripping relay spring 16, and at the moment, the locking plate 12 plays a role of blocking the lower end of the reset rod 6.

After the power-off protection, workman's troubleshooting or detection reachs the state of reporting an emergency and asking for help or increased vigilance contact, then can carry out automatic re-setting through long-range, the earth leakage protector is when carrying out automatic re-setting, and reset instruction (external signal or self signal) are received to the product, and reset relay 8 gets electric, instantaneous circular telegram, and reset relay 8 leans on magnetic force pulling reset core 9, and reset core 9 compresses reset relay spring 10, simultaneously reset core 9 drives the rotatory release lever 6 that pushes down of depression bar 7 that resets, and 6 conflict locking plates 12 of reset lever when reset lever 6 descends, and along with the constantly moving down of reset lever 6, constantly promotes under tripping relay spring 16's spring action and takes off mouthful iron core, and tripping iron core 3 makes the spring bolt part of locking plate 12 insert in the. Then, the reset relay 8 is powered off, after the reset relay 8 is powered off, the reset relay spring 10 under the action of elastic force pushes the reset iron core 9, the reset iron core 9 drives the reset pressure rod 7 to rotate and rise, the reset spring 11 at the lower part of the reset rod 6 acts simultaneously, under the action of the elastic force of the reset spring 11, the reset rod 6 rises, the reset rod 6 drives the lock plate 12 to rise, the lock plate 12 can also drive the cross arm to rise while rising, the cross arm further drives the movable contact elastic sheet 4 to rise, a contact on the movable contact elastic sheet 4 is in contact with the static contact 5, the power is switched on in a closed mode, and finally the reset action of the leakage protector.

To sum up, the earth-leakage protector with automatic re-setting of this application is through the introduction of locking plate 12, switches control to the state of locking plate 12, and then realizes the state control to the movable contact shell fragment 4 that links to each other with locking plate 12, realizes the switching of the two states of contact circular telegram and separation outage between movable contact shell fragment 4 and stationary contact 5, and overall structure is simple, but the reliability is high, can realize the long-range resetting to earth-leakage protector, improves the convenience in use and the stability of product.

In addition, the earth leakage protector described in the present application can be directly used as a separate earth leakage protection device, and can also be disposed in a load switch, such as a switch of an electric heating faucet and an air conditioner switch, which should be regarded as a protection list of the present application.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (5)

1. A leakage protector with automatic reset comprises a shell for packaging, a tripping relay, a tripping iron core, a movable contact spring sheet and a stationary contact, wherein the tripping relay and the tripping iron core are used for switching the contact state between the movable contact spring sheet and the stationary contact, and the leakage protector is characterized by further comprising a reset rod, a reset pressure rod, a reset relay, a reset iron core, a reset relay spring, a reset spring, a lock plate and a cross rod, a vertical first limit cavity is arranged in the shell, the reset rod is movably arranged in the first limit cavity, the bottom of the vertical cavity is vertically provided with the reset spring for pushing the reset rod, the upper part of the reset rod is rotatably fixed with the reset pressure rod, the reset pressure rod and the reset rod are arranged in a crossed manner, and the middle part of the reset pressure rod is connected with the reset rod through a rotating shaft, the utility model discloses a reset device, including reset iron core, reset spring, tripping iron core, locking plate, movable contact shell fragment, reset rod, reset relay, release relay, tripping iron core and movable contact shell fragment, the one end of reset rod is fixed, the other end with the one end of reset iron core links to each other, reset relay is used for driving the vertical removal of reset iron core, reset spring set up in reset iron core with between reset relay's the messenger enables the contact, the lower part of reset rod is provided with the hasp that the dead locking plate of spacing lock was used, the locking plate have with hasp matched with spring bolt, the side of locking plate links to each other with tripping iron core, tripping relay is used for driving tripping iron core action, tripping iron core drives the locking plate translation, the locking plate with the horizontal pole is connected.

2. A earth-leakage protector with automatic reset according to claim 1, characterized in that the reset iron core is arranged substantially parallel to the reset rod.

3. A leakage protector with automatic reset according to claim 2, characterized in that a second limit cavity is arranged in the housing parallel to the first limit cavity, the reset iron core and a reset spring are arranged in the second limit cavity, the reset relay is arranged at the bottom of the second limit cavity, and the reset iron core drives the reset pressure rod to rotate and press the reset rod to move downwards.

4. A leakage protector with automatic reset as claimed in claim 1, wherein the lock catch at the lower part of the reset rod is a notch slot for the bolt to pass through.

5. A leakage protector with automatic reset as claimed in claim 1, wherein said trip core is arranged perpendicular to said reset rod, said trip relay drives said trip core to move, and a trip relay spring is arranged between said trip relay and said trip core.

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