CN213691943U

CN213691943U - An RCBO overload current protector with locking wire structure

Info

Publication number: CN213691943U
Application number: CN202120074859.2U
Authority: CN
Inventors: 袁柯
Original assignee: Wenzhou Hawai Electron & Electric Manufacture Co ltd
Current assignee: Wenzhou Hawai Electron & Electric Manufacture Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-07-13
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses an RCBO overload current protector with a wire-locking structure, which comprises a casing, a first metal connecting piece and a second metal connecting piece. The second metal connecting piece is connected with a conductive static contact through a wire, and the conductive static The upper end face of the contact is abutted with a moving iron core, the outside of the moving iron core is wound with a coil, the metal connecting piece is connected with the coil by a wire, and insulating rods are fixedly connected to both sides of the top of the moving iron core. In the utility model, under normal current conditions, the moving iron core and the conductive static contact abut to realize the passage of the metal connecting piece 1 and the metal connecting piece 2. When the current in the circuit suddenly increases, the coil and the moving iron core generate a large amount of electricity. The magnetic force increases the magnetic force between the moving iron core and the magnetic block, and the moving iron core moves up under the action of the magnetic force and attracts the magnetic block, so that the moving iron core and the conductive static contact are separated, thereby cutting off the circuit to achieve The function of the protection circuit improves the service life of the RCBO overload current protector.

Description

RCBO overload current protector with locking wire structure

Technical Field

The utility model relates to an overcurrent protector technical field especially relates to a RCBO overcurrent protector with locking wire structure.

Background

The overcurrent protector utilizes the principle that a metal element is deformed by heating, and when the current of a line is too large and the heat metal element is deformed enough, the metal element is disconnected to control the switch of the line to trip. After the metal element has cooled, it returns to its original position and is ready for the next action for the current overload protection device.

The metal sheet element in the conventional RCBO overload current protector is thin and soft, so that the purpose of thermal disconnection is achieved, but the metal sheet element is thin, so that the metal sheet element is easily damaged in the using process, and the service life of the RCBO overload current protector is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the RCBO overload current protector with the wire locking structure is provided for solving the problem that the service life of the RCBO overload current protector is short.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a RCBO overcurrent protector with lockwire structure, includes shell, metal connecting piece one and metal connecting piece two, metal connecting piece two is connected with electrically conductive stationary contact through the wire, the up end butt of electrically conductive stationary contact has moved the iron core, the outside winding that moves the iron core has the coil, metal connecting piece one is connected with the coil through the wire, move the top both sides fixedly connected with insulator spindle of iron core, the outside cover of insulator spindle is equipped with the uide bushing, the inside of shell is located the top of moving the iron core and is provided with the magnetic path, the top of shell is provided with the RCBO button.

As a further description of the above technical solution:

the insulating rod is in sliding fit with the guide sleeve, and the guide sleeve is fixedly connected with the shell.

As a further description of the above technical solution:

and a limiting block is arranged at the top end of the insulating rod.

As a further description of the above technical solution:

and the bottom end of the RCBO button is fixedly connected with a pressing plate.

As a further description of the above technical solution:

the bottom end of the RCBO button is elastically connected with the inner surface wall of the top of the shell through a spring.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, under the electric current normal condition, move the passageway that iron core and electrically conductive stationary contact butt realized metal connecting piece one and metal connecting piece two, when the electric current increases suddenly in the circuit, the coil with move the iron core and produce great magnetic force, make to move the magnetic force increase between iron core and the magnetic path, move the iron core and shift up under magnetic action and the magnetic path actuation, make to move iron core and electrically conductive stationary contact separation, thereby cut off the circuit, reach protection circuit's effect, the life of RCBO overcurrent protector has been improved.

2. The utility model discloses in, the circuit overhauls the back that finishes, presses the RCBO button downwards, and the spring extension is pressed the RCBO button and is driven the clamp plate and move down, promotes the insulator spindle and move down through the stopper, and the insulator spindle drives moves iron core synchronous motion to with electrically conductive stationary contact butt again, realize the intercommunication of circuit again, guaranteed the workman when overhauing the circuit, RCBO overcurrent protector is in the state of opening circuit all the time, improved the security of maintenance process.

Drawings

Fig. 1 is a schematic diagram illustrating a front view structure of an RCBO overload current protector with a lockwire structure according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a front view internal structure of an RCBO overload current protector with a lockwire structure according to an embodiment of the present invention;

fig. 3 shows an enlarged schematic structural diagram of a part a in fig. 2 of an RCBO overload current protector with a lockwire structure according to an embodiment of the present invention.

Illustration of the drawings:

1. a housing; 2. an RCBO button; 3. a first metal connecting sheet; 4. a second metal connecting sheet; 5. a spring; 6. pressing a plate; 7. a conductive stationary contact; 8. a movable iron core; 9. a coil; 10. an insulating rod; 11. a guide sleeve; 12. a limiting block; 13. a magnetic block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an RCBO overload current protector with a wire locking structure comprises a shell 1, a metal connecting sheet I3 and a metal connecting sheet II 4, wherein the metal connecting sheet II 4 is connected with a conductive stationary contact 7 through a lead, the upper end surface of the conductive stationary contact 7 is abutted with a movable iron core 8, the outside of the movable iron core 8 is wound with a coil 9, under the condition of electrification, the movable iron core 8 and the coil 9 form an electromagnet, under the condition of normal current, the movable iron core 8 is abutted with the conductive stationary contact 7, when the current is overlarge, the magnetic force is increased, the movable iron core 8 is attracted, the metal connecting sheet I3 is connected with the coil 9 through a wire, the two sides of the top of the movable iron core 8 are fixedly connected with insulating rods 10, the outside of each insulating rod 10 is sleeved with a guide sleeve 11, a magnetic block 13 is arranged in the shell 1 and positioned above the movable iron core 8, an RCBO button 2 is arranged at the top of the shell 1, the RCBO overload current protector can be switched on again by pressing the RCBO button 2.

Specifically, as shown in fig. 3, the insulating rod 10 is in sliding fit with the guide sleeve 11, the guide sleeve 11 is fixedly connected with the housing 1, the top end of the insulating rod 10 is provided with a limiting block 12, the limiting block 12 can prevent the insulating rod 10 from separating from the guide sleeve 11 when moving downwards, and the insulating rod 10 is ensured to move in the vertical direction.

Specifically, as shown in fig. 2, the bottom end of the RCBO button 2 is fixedly connected with a pressing plate 6, and the pressing plate 6 can cover the limiting block 12, so that the limiting block 12 is pushed to move downwards by the pressing plate 6 in the downward moving process of the RCBO button 2.

Specifically, as shown in fig. 2, the bottom outer portion of the RCBO button 2 is elastically connected to the top inner surface wall of the housing 1 by a spring 5, and when the RCBO button 2 is not acted by an external force, the RCBO button 2 can be moved to an original position by a return action of the spring 5.

The working principle is as follows: when the RCBO overload current protector is used, under the normal condition of current, the movable iron core 8 is abutted to the conductive static contact 7 to achieve the access of the metal connecting sheet I3 and the metal connecting sheet II 4, when the current in the circuit is suddenly increased, the coil 9 and the movable iron core 8 generate large magnetic force, so that the magnetic force between the movable iron core 8 and the magnetic block 13 is increased, the movable iron core 8 moves upwards under the action of the magnetic force to be attracted with the magnetic block 13, the movable iron core 8 is separated from the conductive static contact 7, the circuit is cut off, the effect of protecting the circuit is achieved, and the service life of the RCBO overload current protector is prolonged; after the circuit overhauls, press RCBO button 2 downwards, spring 5 extension, press RCBO button 2 and drive clamp plate 6 downstream, promote insulator spindle 10 downstream through stopper 12, insulator spindle 10 drives and moves iron core 8 synchronous motion to with electrically conductive stationary contact 7 butt again, realize the intercommunication of circuit again, guaranteed the workman when overhauing the circuit, RCBO overcurrent protector is in the state of opening circuit all the time, improved the security of maintenance process.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. an RCBO overload current protector with a locking wire structure, comprising a casing (1), a metal connecting piece (3) and a metal connecting piece two (4), characterized in that the metal connecting piece two (4) A conductive static contact (7) is connected by a wire, the upper end surface of the conductive static contact (7) abuts a moving iron core (8), and a coil (9) is wound around the outside of the moving iron core (8). , the metal connecting piece one (3) is connected with the coil (9) through the wire, the top two sides of the moving iron core (8) are fixedly connected with an insulating rod (10), and the outer sleeve of the insulating rod (10) A guide sleeve (11) is provided, a magnetic block (13) is arranged inside the casing (1) above the moving iron core (8), and an RCBO button (2) is arranged on the top of the casing (1).

2. The RCBO overload current protector with a locking wire structure according to claim 1, wherein the insulating rod (10) is slidingly matched with the guide sleeve (11), and the guide sleeve (11) is slidably matched with the guide sleeve (11). The housing (1) is fixedly connected.

3 . The RCBO overload current protector with a locking wire structure according to claim 1 , wherein a limiting block ( 12 ) is provided at the top of the insulating rod ( 10 ). 4 .

4 . The RCBO overload current protector with a wire locking structure according to claim 1 , wherein a pressure plate ( 6 ) is fixedly connected to the bottom end of the RCBO button ( 2 ). 5 .

5. The RCBO overload current protector with a locking wire structure according to claim 1, wherein the bottom end of the RCBO button (2) passes through the spring (5) and the top of the casing (1). The surface wall is elastically connected.