CN212648166U

CN212648166U - Hydraulic electromagnetic breaker for 5G

Info

Publication number: CN212648166U
Application number: CN202021620247.0U
Authority: CN
Inventors: 施宏伟; 刘福; 周泉淼; 胡媛; 李一炜; 陈林生; 孙良权; 黄杰
Original assignee: Zhejiang Bsb Electrical Appliances Co ltd
Current assignee: Zhejiang Bsb Electrical Appliances Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-03-02
Anticipated expiration: 2030-08-06

Abstract

The utility model provides a hydraulic electromagnetic circuit breaker for 5G, which comprises a shell, and an unlocking mechanism, a tripping mechanism, a moving contact, a static contact and an arc extinguish chamber which are arranged in the shell, wherein the moving contact is provided with a moving contact, and the static contact is provided with a static contact; the unlocking mechanism is adjacent to the tripping mechanism and can drive the tripping mechanism to rotate; the tripping mechanism is hinged with the moving contact, and when the tripping mechanism rotates, the moving contact rotates along with the tripping mechanism to drive the moving contact to be in contact with or far away from the static contact, so that the on-off of the circuit breaker is realized; one end of the static contact is connected with the incoming line terminal, the middle part of the static contact is bent to one side far away from the incoming line terminal to form a U-shaped structure, and the arc extinguish chamber is arranged adjacent to the U-shaped structure; the other end of static contact sets up the stationary contact, and one side of stationary contact is provided with and extends the lower arc angle that is used for guiding electric arc to get into the explosion chamber fast to the inside direction of explosion chamber. The circuit breaker can quickly eliminate electric arcs, avoid breaking delay of the moving and static contacts, and is simple and safe in the dismounting process.

Description

Hydraulic electromagnetic breaker for 5G

Technical Field

The utility model relates to a circuit breaker, specifically speaking relates to one kind can divide by the quick branch, easy dismounting's hydraulic pressure electromagnetic circuit breaker for 5G simultaneously.

Background

The breaker is a switching device which can close, carry and open/close the current under the condition of a normal loop and can close, carry and open/close the current under the condition of an abnormal loop within a specified time; meanwhile, overcurrent protection is provided for the power circuit.

When the load is overloaded, the current of the electromagnetic coil in the tripping mechanism is increased and exceeds a rated value, the magnetic field intensity of the electromagnetic coil is enhanced, the movable iron core in the delay tube moves towards the pole shoe, the electromagnetic force reaches the maximum value, the armature is attracted to the pole shoe, the tripper acts to drive the movable contact to rotate, and therefore the movable contact is separated from the fixed contact. The short circuit instantaneous tripping is easy to occur at the moment when the moving contact is separated from the static contact, and the short circuit instantaneous tripping can cause the electric arc to be generated at the moment when the moving contact is separated from the static contact; the current passing through the electromagnetic coil is large, the electromagnetic force is rapidly increased, the armature is attracted to the pole shoe before the movable iron core moves, the release does not delay action, and the contact is disconnected. Therefore, how to eliminate the electric arc as soon as possible and make the movable contact and the static contact quickly separated is one of the technical difficulties in the field.

In addition, the circuit breaker is generally arranged in a panel in the using process, only the manual switch part is exposed, generally, the circuit breaker needs to be arranged in place and then covered by the panel to avoid falling off, and when a plurality of circuit breakers need to be arranged at the same time, the assembling process is complicated; and when the manual switch of the circuit breaker fails, the internal circuit connection is normal, so that potential safety hazards exist in the replacement process.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a 5G uses hydraulic pressure electromagnetic circuit breaker, but this circuit breaker rapid elimination electric arc avoids the branch of sound contact to divide the disconnected time delay, and the dismouting process is simple, safety simultaneously.

Based on the purpose, the utility model provides a circuit breaker comprises a shell, and an unlocking mechanism, a tripping mechanism, a moving contact, a static contact and an arc extinguish chamber which are arranged in the shell, wherein the moving contact is provided with a moving contact, and the static contact is provided with a static contact; wherein the content of the first and second substances,

the unlocking mechanism is arranged adjacent to the tripping mechanism and can drive the tripping mechanism to rotate; the tripping mechanism is hinged with the moving contact, and when the tripping mechanism rotates, the moving contact rotates along with the tripping mechanism, so that the moving contact is driven to be in contact with or far away from the static contact, and the on-off of the circuit breaker is realized;

one end of the static contact is connected with the incoming line terminal, the middle part of the static contact is bent to one side far away from the incoming line terminal to form a U-shaped structure, and the arc extinguish chamber is arranged adjacent to the U-shaped structure; the other end of static contact sets up the stationary contact, and one side of stationary contact is provided with and extends the lower arc angle that is used for guiding electric arc to get into the explosion chamber fast to the inside direction of explosion chamber.

Preferably, the unlocking mechanism comprises a push rod, a positioning piece, a linkage piece, a first elastic piece, a second elastic piece and a third elastic piece, wherein a through hole is formed in the top of the breaker shell, the positioning piece is embedded in the through hole, and the positioning piece is connected with the second elastic piece; one end of the first elastic piece is connected with the operating end of the push rod, and the other end of the first elastic piece is connected with the positioning piece through the second elastic piece; when the push rod slides into the shell under the action of an external force, the first elastic piece is extruded to apply an elastic force to the second elastic piece, so that the second elastic piece drives the positioning piece to rotate, the positioning piece is contracted in the shell, and after the external force disappears, the positioning piece drives the lower part to extend out of the shell under the driving of the resilience force of the first elastic piece and the second elastic piece;

one end of the linkage piece is hinged to the side wall of the shell through a third elastic piece, and the other end of the linkage piece extends towards one side of the armature of the tripping mechanism; the operating end of the push rod is abutted against the third elastic piece, when the push rod slides towards the shell under the action of external force, the third elastic piece drives the linkage piece to rotate clockwise, so that the armature is stirred to be attracted, the tripping mechanism drives the moving contact to rotate and separate from the static contact, and when the external force disappears, the linkage piece returns by means of the resilience force of the third elastic piece.

Preferably, the static contact is of a sheet structure, the front end of the middle part of the static contact extends to one side far away from the incoming line terminal and then is twisted to one side to form a U-shaped structure, the lower end part of the U-shaped structure is bent downwards to form a bearing part, and the static contact is arranged on the bearing part; one side of the bearing part far away from the U-shaped structure extends towards the inner direction of the arc extinguish chamber to form a lower arc angle used for guiding electric arc to rapidly enter the arc extinguish chamber.

Preferably, the arc extinguishing chamber and the fixed contact are arranged adjacently, the arc extinguishing chamber comprises two grid sheet supports which are symmetrically arranged, a plurality of arc extinguishing grid sheets are arranged in the grid sheet supports, the arc extinguishing grid sheets are arranged at intervals in a stacked mode, and the arc extinguishing grid sheets are arranged in parallel with the lower arc angle.

Preferably, the inner side of the U-shaped structure is symmetrically provided with air sheet brackets, and the air sheet brackets are provided with air generating sheets; therefore, the static contact is placed on the outer side of the gas production support, the current carrying, the electric conduction and the generated electromagnetic repulsion of the static contact are not influenced, the heat dissipation is facilitated, and the temperature rise of a product is ensured.

Preferably, the static contact is a sheet structure, one end of the static contact connected with the incoming line terminal extends forwards and backwards to form a two-sheet structure which is symmetrically arranged forwards and backwards, the middle part of the static contact is arranged in a step shape, the bottom of the two-sheet structure is folded and extends towards one side close to the arc extinguish chamber to form a horizontally arranged bearing part, the static contact of the static contact is arranged on the bearing part, and one side of the bearing part close to the arc extinguish chamber extends towards the inner direction of the arc extinguish chamber to form a lower arc angle used for guiding electric arc to rapidly enter the arc extinguish chamber.

Preferably, the arc extinguish chamber and the fixed contact are arranged adjacently, the arc extinguish chamber comprises two grid sheet supports which are symmetrically arranged, a plurality of arc extinguish grid sheets are arranged in the grid sheet supports, and the arc extinguish grid sheets are arranged at intervals in a stacking mode.

Preferably, the inner sides of the two-piece structure are symmetrically provided with air piece supports, and the air piece supports are provided with air generating pieces.

Preferably, the gas generating piece is made of a Nomi silk paper material.

Preferably, the outlet terminal of the circuit breaker is arranged on the same side as the inlet terminal of the circuit breaker, the outlet terminal is arranged below the fixed contact, the movable contact is arranged above the fixed contact, and current flows into the fixed contact from the inlet terminal, flows into the movable contact from the fixed contact, and finally flows out from the outlet terminal.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses structure to the static contact is improved, like this, has not only effectively increased the explosion chamber, improves the arc extinguishing ability of circuit breaker, also is favorable to the quick separation of sound contact simultaneously, avoids or reduces electric arc to produce the scaling loss to sound contact and near related device, based on the utility model discloses quick arc extinguishing appears dividing the characteristic of breaking time delay very few, the utility model discloses the product is more applicable to in the 5G uses the scene.

The utility model discloses the circuit breaker is provided with release mechanism, among this release mechanism, makes setting element, interlock spare and push rod linkage through the elastic component, like this, can guarantee under the condition of sound contact disconnection, the dismouting circuit breaker.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a first schematic diagram of an internal structure of a hydraulic electromagnetic circuit breaker for 5G in an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a 5G hydraulic electromagnetic circuit breaker according to an embodiment of the present invention;

fig. 3 is an appearance structure diagram of a hydraulic electromagnetic circuit breaker for 5G in the embodiment of the present invention;

fig. 4 is a schematic diagram of a pre-assembly structure of a 5G hydraulic electromagnetic circuit breaker and a panel according to an embodiment of the present invention;

fig. 5 is a schematic view of an assembly structure of a hydraulic electromagnetic circuit breaker and a panel for 5G in the embodiment of the present invention;

fig. 6 is a schematic structural view of a stationary contact connection inlet terminal according to an embodiment of the present invention;

fig. 7 is a side view structural diagram of a stationary contact connection inlet terminal according to an embodiment of the present invention;

fig. 8 is an assembly structure diagram of a static contact and a gas generating component in an embodiment of the present invention;

fig. 9 is an exploded view of a static contact and a gas generating component according to an embodiment of the present invention;

fig. 10 is a schematic view of the internal structure of the circuit breaker of the embodiment shown in fig. 6-9;

fig. 11 is a schematic structural diagram of a static contact according to another embodiment of the present invention;

fig. 12 is a structural view of an assembly of a static contact and an arc extinguish chamber in another embodiment of the invention;

fig. 13 is a structural diagram of an internal assembly of a static contact and an arc extinguish chamber in another embodiment of the invention;

fig. 14 is a top view of an arc chute according to another embodiment of the present invention;

fig. 15 is a schematic view of the internal structure of the circuit breaker having the embodiment of fig. 11-14.

Fig. 16 is a schematic view of the airflow and arc conduction directions of the hydraulic electromagnetic circuit breaker for 5G in the embodiment of the present invention.

Wherein, 1, a shell; 2. a tripping mechanism; 3. a moving contact; 4. static contact; 5. an arc extinguishing chamber;

11. a through hole; 21. an armature; 22. an electromagnetic coil; 31. a movable contact; 32. an arc extinguishing block;

41. a stationary contact; 42. a receiving part; 43. a lower arc angle; 44. an arc-isolating sheet;

51. a grid support; 52. arc extinguishing grid pieces;

61. a push rod; 62. a positioning member; 63. a linkage member; 64. a first elastic member; 65. a second elastic member; 66; a third elastic member;

71. a gas production support; 72. a gas generating sheet;

81. an incoming terminal; 82. an outlet terminal;

a. a panel; b. and (4) an arc.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The embodiment provides a hydraulic electromagnetic circuit breaker for 5G, as shown in fig. 1-3, the circuit breaker includes a housing 1, and an unlocking mechanism, a tripping mechanism 2, a moving contact 3, a static contact 4 and an arc extinguish chamber 5 which are arranged in the housing 1, wherein the moving contact 3 is provided with a moving contact 31, and the static contact 4 is provided with a static contact 41; wherein the content of the first and second substances,

the unlocking mechanism is arranged adjacent to the tripping mechanism 2 and can drive the tripping mechanism 2 to rotate; the tripping mechanism 2 is hinged with the moving contact 3, and when the tripping mechanism 2 rotates, the moving contact 3 rotates along with the tripping mechanism, so that the moving contact 31 is driven to contact or be far away from the static contact 41, and the on-off of the circuit breaker is realized;

one end of the static contact 4 is connected with the incoming line terminal 81, the middle part of the static contact 4 is bent towards one side far away from the incoming line terminal 81 to form a U-shaped structure, and the arc extinguish chamber 5 is arranged adjacent to the U-shaped structure; the other end of static contact 4 sets up stationary contact 41, and one side of stationary contact 41 is provided with and extends to the inside direction of explosion chamber 5 and is used for guiding the quick lower arc angle 43 that gets into explosion chamber 5 of electric arc. When the load is overloaded, when the current of the electromagnetic coil 22 in the tripping mechanism 2 is increased and exceeds a rated value, the magnetic field intensity of the electromagnetic coil 22 is enhanced, the movable iron core in the delay tube moves towards the pole shoe, the electromagnetic force reaches the maximum value, the armature 21 is attracted to the pole shoe, the tripping device acts to drive the movable contact 3 to rotate, and therefore the movable contact 31 is separated from the fixed contact 41. It should be noted that, under the condition of short circuit, short circuit instantaneous tripping is very easy to occur, and the short circuit instantaneous tripping can cause the moving contact 3 and the static contact 4 to be separated to generate electric arc instantly; the current passing through the electromagnetic coil 22 is large, the electromagnetic force is rapidly increased, the armature 21 is attracted to the pole shoe before the movable iron core moves, the release does not have delay action, and the contact is opened, namely short-circuit instantaneous release is realized.

As a preferred embodiment, as shown in fig. 1-3, the unlocking mechanism includes a push rod 61, a positioning member 62, a linkage member 63, a first elastic member 64, a second elastic member 65, and a third elastic member 66, wherein a through hole 11 is formed at the top of the circuit breaker housing 1, the positioning member 62 is embedded in the through hole 11, and the positioning member 62 is connected to the second elastic member 65; one end of the first elastic member 64 is connected with the operation end of the push rod 61, and the other end is connected with the positioning member 62 through a second elastic member 65; when the push rod 61 slides into the housing 1 under an external force, the first elastic member 64 is squeezed to apply an elastic force to the second elastic member 65, so that the second elastic member 65 drives the positioning member 62 to rotate, and the positioning member 62 is contracted in the housing 1, and when the external force disappears, the positioning member 62 drives a lower part to extend out of the housing 1 under the resilience force of the first elastic member 64 and the second elastic member 65;

one end of the linkage member 63 is hinged to the side wall of the housing 1 through a third elastic member 66, and the other end extends to one side of the armature 21 of the tripping mechanism 2; the operating end of the push rod 61 abuts against the third elastic member 66, when the push rod 61 slides towards the housing 1 by an external force, the third elastic member 66 drives the linkage member 63 to rotate clockwise, so as to toggle the armature 21 to pull in, and enable the tripping mechanism 2 to drive the moving contact 3 to rotate and separate from the static contact 4, and when the external force disappears, the linkage member 63 returns by virtue of the resilience of the third elastic member 66. Thus, as shown in fig. 4-5, when the circuit breaker is installed, the push rod 61 can be pushed to the bottom by a tool, the push rod 61 pushes the linkage member 63, the linkage member 63 pushes the armature 21, so that the armature 21 is closed, and meanwhile, the armature 21 unlocks the tripping mechanism 2, so that the moving contact and the static contact 4 are separated; in the process, the positioning member 62 is rotated and contracted in the housing 1 due to the second elastic member 65, so that the circuit breaker is freely moved into or away from the panel a; after the push rod 61 is released, the resilience force of the second elastic member 65 drives the positioning member 62 to rotate and return, and the top of the positioning member 62 extends out of the panel a, so that the circuit breaker is installed in the panel a and then is clamped in the panel a through the positioning member 62.

Preferably, the first elastic member 64 includes a compression spring, and the second elastic member 65 both employ torsion springs.

Preferably, the positioning element 62 is of an inverted T shape, and one side of the upper end of the positioning element, which is far away from the push rod 61, is a slope surface, so that when the positioning element 62 is forced to rotate, the positioning element does not rub against the side wall of the through hole 11; meanwhile, when the pressing force of the push rod 61 is insufficient, the positioning member 62 is not completely retracted into the housing 1, and the panel can press the slope surface of the positioning member 62 downwards along with the pushing of the circuit breaker to the panel a side in the process of assembling the circuit breaker into the panel a, so that the contraction of the positioning member 62 is promoted or assisted.

As a preferred embodiment, the stationary contact 4 is a sheet-shaped structure, as shown in fig. 6 and 7, a front end of a middle portion of the stationary contact 4 extends to a side away from the incoming line terminal 81 and then twists to a side to form a U-shaped structure, so as to provide a sufficient arc extinguishing space for the arc extinguishing chamber 5, a lower end portion of the U-shaped structure is bent downward to form a receiving portion 42, and the stationary contact 41 is disposed on the receiving portion 42; one side of the bearing part 42, which is far away from the U-shaped structure, extends towards the inside of the arc extinguish chamber 5 to form a lower arc angle 43 for guiding the arc to rapidly enter the arc extinguish chamber 5. When the moving contact 3 and the static contact 4 are disconnected, the arc leg of the electric arc is on the moving contact 41, the material of the arc extinguishing block 32 releases gas due to the huge heat generated by the electric arc, the electric arc is pushed to enter the arc extinguishing chamber 5, and when the electric arc is pushed to be elongated to enter the arc extinguishing chamber 5, the arc leg on the static contact 41 is guided to the lower arc corner 43, so that the burning loss of the static contact 41 is reduced; then, when the feeler lever returns to the end position, the upper arc angle and the feeler lever are always in the same electric potential, and the arc foot on the movable contact 31 jumps to the upper arc angle, thus being beneficial to the electric arc to enter the arc extinguish chamber 5 and reducing the burning loss of the movable contact 31.

Preferably, the angle of the downward bending of the bearing part 42 is 30-40 °.

Preferably, as shown in fig. 8-9, the inner side of the U-shaped structure is further symmetrically provided with an air sheet bracket, and the air sheet bracket is provided with an air generating sheet 72; therefore, the static contact is placed on the outer side of the gas production support, the current carrying and the electric conduction of the static contact are not influenced, the heat dissipation is facilitated, and the temperature rise of a product is ensured.

Preferably, the lower edge of the gas generating piece 72 is parallel to the lower arc angle 43, so that the gas generating piece 72 above the lower arc angle 43 is in a parallelogram arrangement.

Preferably, the gas generating plate 72 is made of a nomex paper material, and two gas generating plates are symmetrically arranged, so that at the moment of short circuit and breaking, as shown in fig. 16, the gas generating plate 72 can generate gas under high heat, and the arc is rapidly pushed into the arc extinguishing grid plate 52 of the arc extinguishing chamber 5 in a gas flow manner, so as to rapidly extinguish the arc b.

Preferably, an arc isolation block is further arranged in the U-shaped structure, so that arc leakage is avoided, and other parts in the circuit breaker are protected from being damaged by the arc.

As a preferred embodiment, as shown in fig. 10, the arc extinguishing chamber 5 is disposed adjacent to the stationary contact 4, the arc extinguishing chamber 5 includes two symmetrically disposed grid supports 51, a plurality of arc extinguishing grids 52 are disposed in the grid supports 51, and the arc extinguishing grids 52 are spaced and stacked, and in particular, the arc extinguishing grids 52 are disposed parallel to the lower arc angle 43, so that the arc can rapidly enter the arc extinguishing grids 52 from the stationary contact 41.

Preferably, the upper end of the arc extinguishing chamber 5 extends to a side close to the U-shaped structure, so as to fill up the gap above the gas generating piece 72 and avoid the leakage of the arc.

As a preferred embodiment, the static contact 4 is a sheet-shaped structure, as shown in fig. 11, one end of the static contact 4 connected to the wire inlet terminal 81 extends forward and backward to form a two-sheet structure symmetrically arranged forward and backward, the middle portion of the static contact 4 is arranged in a step shape, the bottoms of the two-sheet structure are folded and extend toward one side close to the arc extinguish chamber 5 to form a horizontally arranged receiving portion 42, the static contact 41 of the static contact 4 is arranged on the receiving portion 42, and one side of the receiving portion 42 close to the arc extinguish chamber 5 extends toward the inside of the arc extinguish chamber 5 to form a lower arc angle 43 for guiding the arc to rapidly enter the arc extinguish chamber 5.

Preferably, as shown in fig. 12, the two-piece structure is symmetrically provided with air-piece brackets at inner sides thereof, and the air-piece brackets are provided with air-generating pieces 72, so that the static contact 4 is placed at an outer side of the air-generating bracket 71, which does not affect current-carrying, electric conduction and generated electromagnetic repulsion of the static contact 4, and is beneficial to heat dissipation and ensures product temperature rise. Preferably, the gas generating pieces 72 are symmetrically provided with two pieces, and at the moment of short circuit and breaking, the gas generating pieces 72 can generate gas under high heat, and the arc is rapidly pushed into the arc extinguishing grid pieces 52 of the arc extinguishing chamber 5 in a gas flow manner to rapidly extinguish the arc.

Preferably, the gas generating sheet 72 is made of a nomex paper material.

As a preferred embodiment, as shown in fig. 13 to 14, the arc extinguish chamber 5 is disposed adjacent to the fixed contact 4, the arc extinguish chamber 5 includes two grid supports 51 symmetrically disposed, a plurality of arc extinguish grids 52 are disposed in the grid supports 51, and the arc extinguish grids 52 are spaced and stacked.

Preferably, the outlet terminal 82 of the circuit breaker is arranged on the same side as the inlet terminal 81, the outlet terminal 82 is arranged below the fixed contact 41, the moving contact 31 is arranged above the fixed contact 41, and the current flows into the fixed contact 4 from the inlet terminal 81, flows into the moving contact 31 from the fixed contact 41, and finally flows out from the outlet terminal 82, so that when a short circuit occurs in the line, the current direction at the fixed contact 41 is opposite to the current direction at the upper and lower sides, so that the fixed contact 41 and the moving contact 31 generate an electromagnetic repulsion force, and the separation of the moving contact 31 and the fixed contact 41 is accelerated. Specifically, as shown in fig. 15, when the static contact 4 with such a structure is disconnected with an ultra-large current, the current enters from the end I and then flows to the end I2 and the end I3 in sequence along the direction I1, and since the current directions of the end I2 and the end I3 are opposite, an electromagnetic repulsion force is inevitably generated, so that the moving contact 3 and the static contact 4 can be rapidly disconnected; meanwhile, because the current directions of the I1 and the I3 are the same, attraction force to the static contact 4 is generated, and the disconnection of the movable contact 3 and the static contact 4 is further accelerated.

Preferably, the distance between two adjacent arc-extinguishing grid plates 52 gradually increases from the contact end to the contact end, so that the plurality of arc-extinguishing grid plates 52 are distributed in a fan shape from top to bottom, and the arc-extinguishing space between the adjacent arc-extinguishing grid plates 52 gradually increases, thereby lengthening the arc in the arc breaking process.

An avoiding groove is formed in the middle of one side, close to the contact, of the arc extinguishing grid piece 52, and the width of the avoiding groove gradually narrows from the contact end to the direction away from the contact.

Preferably, the edge of the opening end of the avoiding groove is adducted in an arc shape, and the bottom of the avoiding groove is V-shaped.

Preferably, the evasion groove is V-shaped.

Preferably, the arc chute 52 is bent downward away from the contact end, thereby reducing the space occupied by the arc chute 52.

Preferably, the number of the arc extinguishing grid pieces 52 is 4-5.

Furthermore, the utility model discloses structure to the static contact is improved, like this, has not only effectively increased the explosion chamber, improves the arc extinguishing ability of circuit breaker, also is favorable to the quick separation of sound contact simultaneously, avoids or reduces electric arc to produce the scaling loss to sound contact and near related device, based on the utility model discloses quick arc extinguishing appears dividing the characteristic of breaking time delay very few, the utility model discloses the product is more applicable to in the 5G applied scene.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and that any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. A hydraulic electromagnetic circuit breaker for 5G is characterized by comprising a shell (1), and an unlocking mechanism, a tripping mechanism (2), a movable contact (3), a static contact (4) and an arc extinguish chamber (5) which are arranged in the shell (1), wherein the movable contact (3) is provided with a movable contact (31), and the static contact (4) is provided with a static contact (41); wherein the content of the first and second substances,

the unlocking mechanism is arranged adjacent to the tripping mechanism (2) and can drive the tripping mechanism (2) to rotate; the tripping mechanism (2) is hinged with the moving contact (3), and when the tripping mechanism (2) rotates, the moving contact (3) rotates along with the tripping mechanism, so that the moving contact (31) is driven to contact or be far away from the static contact (41), and the on-off of the circuit breaker is realized;

one end of the static contact (4) is connected with the incoming line terminal (81), the middle part of the static contact (4) is bent towards one side far away from the incoming line terminal (81) to form a U-shaped structure, and the arc extinguish chamber (5) is arranged adjacent to the U-shaped structure; the other end of static contact (4) sets up stationary contact (41), and one side of stationary contact (41) is provided with and extends to explosion chamber (5) inside direction and is used for guiding the quick lower arc angle (43) that gets into explosion chamber (5) of electric arc.

2. The hydraulic electromagnetic circuit breaker for 5G according to claim 1, wherein the unlocking mechanism comprises a push rod (61), a positioning member (62), a linkage member (63), a first elastic member (64), a second elastic member (65) and a third elastic member (66), wherein a through hole (11) is formed in the top of the circuit breaker housing (1), the positioning member (62) is embedded in the through hole (11), and the second elastic member (65) is connected to the positioning member (62); one end of the first elastic piece (64) is connected with the operation end of the push rod (61), and the other end of the first elastic piece is connected with the positioning piece (62) through a second elastic piece (65); when the push rod (61) slides towards the shell (1) under the action of an external force, the first elastic piece (64) is extruded to apply an elastic force to the second elastic piece (65), so that the second elastic piece (65) drives the positioning piece (62) to rotate, the positioning piece (62) is contracted in the shell (1), and after the external force disappears, the positioning piece (62) drives the lower part to extend out of the shell (1) under the elastic force of the first elastic piece (64) and the second elastic piece (65);

one end of the linkage piece (63) is hinged to the side wall of the shell (1) through a third elastic piece (66), and the other end of the linkage piece extends towards one side of the armature (21) of the tripping mechanism (2); the operating end of the push rod (61) is abutted against the third elastic piece (66), when the push rod (61) slides towards the shell (1) under the action of an external force, the third elastic piece (66) drives the linkage piece (63) to rotate clockwise, so that the armature (21) is stirred to attract, the tripping mechanism (2) drives the moving contact (3) to rotate and separate from the static contact (4), and when the external force disappears, the linkage piece (63) returns by means of the resilience force of the third elastic piece (66).

3. The hydraulic electromagnetic circuit breaker for 5G according to claim 1, wherein the static contact (4) is a sheet-shaped structure, the front end of the middle part of the static contact (4) extends to the side far away from the incoming line terminal (81) and then is twisted to the side to form a U-shaped structure, the lower end part of the U-shaped structure is bent downwards to form a bearing part (42), and the static contact (41) is arranged on the bearing part (42); one side of the bearing part (42) far away from the U-shaped structure extends towards the inner direction of the arc extinguish chamber (5) to form a lower arc angle (43) used for guiding electric arc to rapidly enter the arc extinguish chamber (5).

4. The hydraulic electromagnetic circuit breaker for 5G according to claim 3, wherein the arc extinguish chamber (5) is disposed adjacent to the fixed contact (4), the arc extinguish chamber (5) comprises two grid supports (51) symmetrically disposed, a plurality of arc extinguish grids (52) are disposed in the grid supports (51), the arc extinguish grids (52) are spaced and stacked, and the arc extinguish grids (52) are disposed in parallel with the lower arc angle (43).

5. The hydraulic electromagnetic circuit breaker for 5G according to claim 3, wherein the inside of the U-shaped structure is symmetrically provided with air sheet supports, and the air sheet supports are provided with air generating sheets (72).

6. The hydraulic electromagnetic circuit breaker for 5G according to claim 1, wherein the static contact (4) is a sheet-shaped structure, one end of the static contact connected with the incoming line terminal (81) extends forwards and backwards to form a two-sheet structure symmetrically arranged forwards and backwards, the middle part of the static contact (4) is arranged in a step shape, the bottoms of the two-sheet structure are folded and extend towards one side close to the arc extinguish chamber (5) to form a horizontally arranged receiving part (42), the static contact (41) of the static contact (4) is arranged on the receiving part (42), and one side of the receiving part (42) close to the arc extinguish chamber (5) extends towards the inside of the arc extinguish chamber (5) to form a lower arc angle (43) for guiding the arc to rapidly enter the arc extinguish chamber (5).

7. The hydraulic electromagnetic circuit breaker for 5G according to claim 5, wherein the arc extinguish chamber (5) is disposed adjacent to the fixed contact (4), the arc extinguish chamber (5) comprises two grid supports (51) symmetrically disposed, a plurality of arc extinguish grids (52) are disposed in the grid supports (51), and the arc extinguish grids (52) are spaced and stacked.

8. The hydraulic electromagnetic circuit breaker for 5G according to claim 6, wherein the two-piece structure is symmetrically provided with air piece supports inside, and the air piece supports are provided with air generating pieces (72).

9. A hydraulic electromagnetic circuit breaker for 5G according to claim 5 or 8, characterized in that the gas generating plate (72) is made of Nomick paper.

10. The hydraulic electromagnetic circuit breaker for 5G according to claim 6, wherein the outlet terminal (82) of the circuit breaker is disposed on the same side as the inlet terminal (81) of the circuit breaker, the outlet terminal (82) is disposed below the fixed contact (41), the movable contact (31) is disposed above the fixed contact (41), and current flows into the fixed contact (4) from the inlet terminal (81), flows into the movable contact (31) from the fixed contact (41), and finally flows out from the outlet terminal (82), so that when a short circuit occurs in the circuit, the current direction at the fixed contact (41) is opposite to the current direction above and below, and thus the electromagnetic repulsion force is generated between the fixed contact (41) and the movable contact (31) to accelerate the separation of the movable contact (31) and the fixed contact (41).