CN220138232U

CN220138232U - Small-size electric leakage tripping structure

Info

Publication number: CN220138232U
Application number: CN202320686703.9U
Authority: CN
Inventors: 叶献东; 王志勇; 万逸群; 王丽
Original assignee: Fato Mechanical And Electrical Co ltd
Current assignee: Fato Mechanical And Electrical Co ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-12-05
Anticipated expiration: 2033-03-28

Abstract

The utility model relates to a small-sized electric leakage tripping structure which comprises a shell, a circuit board, a zero sequence transformer and a tripping mechanism, wherein the circuit board, the zero sequence transformer and the tripping mechanism are arranged in the shell; the second conductive piece is a second reset spring and is provided with a second fixed part, a second movable part and a second deformation part; the second movable part is abutted against the leakage indicator, and when the leakage indicator is positioned at the normal indication position, the second deformation part is compressed to enable the second movable part to form acting force to the leakage release indication position on the leakage indicator positioned at the normal indication position. The utility model cancels the electric leakage indication reset spring in the traditional small-sized electric leakage release, changes the static copper sheet into a conductive spring structure, not only is used for electric leakage test connection, but also realizes the reset function, reduces the number of parts and improves the assembly efficiency.

Description

Small-size electric leakage tripping structure

Technical Field

The utility model relates to a small-sized leakage tripping structure.

Background

The release is a device mechanically connected to the circuit breaker for releasing the holding mechanism and automatically opening the circuit breaker. The leakage release in the current market mainly comprises a zero sequence transformer, a circuit board and a tripping mechanism, and has the functions that when a circuit has leakage or a person gets an electric shock, the vector sum of currents passing through the zero sequence current transformer is not equal to zero, voltages are generated at two sides of a secondary coil of the transformer and amplified by an integrated circuit, and when a setting value is reached, a power supply is cut off within 0.1 second through the leakage release, so that the effects of electric shock and leakage protection are achieved. The tripping mechanism mainly comprises a tripping device, a test button, a static copper sheet, a movable copper sheet, a test button reset spring, a leakage lock catch piece, a leakage indication reset spring and the like, wherein the tripping device comprises a tripping coil, a movable iron core, the static copper sheet and one end of the movable copper sheet are respectively connected with a zero sequence current transformer and a circuit board, the movable copper sheet can be pushed to be connected with the static copper sheet by pressing the test button so as to enable a leakage test to be conducted, the leakage lock catch piece and the leakage indication piece act by the action of the tripping device, and the test button reset spring and the leakage indication reset spring are respectively used for resetting of the test button and resetting of the leakage indication piece. The existing release has more parts, so that the assembly efficiency is lower, and the production cost is higher.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings in the prior art and provides a small leakage tripping structure.

The technical scheme adopted by the utility model is as follows: the utility model provides a small-size electric leakage tripping device, includes casing and circuit board, zero sequence transformer, tripping device who sets up in the casing, tripping device includes release, test button, electric leakage indicator piece, electric leakage latch piece, first electrically conductive piece and second electrically conductive piece are electric connection circuit board and zero sequence transformer respectively (here the order is not necessarily corresponding from beginning to end, can be for first electrically conductive piece connection circuit board and second electrically conductive piece connection zero sequence transformer, also can be for first electrically conductive piece connection zero sequence transformer and second electrically conductive piece connection circuit board), first electrically conductive piece and second electrically conductive piece phase separation just can make first electrically conductive piece and second electrically conductive piece joint formation electric connection through test button; the leakage indicator is movable relative to the shell and has a normal indication position and a leakage tripping indication position; the second conductive piece is a second reset spring and is provided with a second fixed part, a second movable part and a second deformation part connected with the second fixed part and the second movable part; the second movable part is abutted against the leakage indicator, and when the leakage indicator is positioned at the normal indication position, the second deformation part is compressed to enable the second movable part to form acting force to the leakage tripping indication position on the leakage indicator positioned at the normal indication position.

The second reset spring is a torsion spring, the second deformation part is a middle winding part of the torsion spring, the second fixing part and the second movable part are respectively two end rotating arm parts of the torsion spring, the inner wall of the shell is provided with a second torsion spring limiting shaft, the second deformation part is wound on the second torsion spring limiting shaft, and the first conductive part and the second deformation part can be connected through the test button to form electric connection.

The leakage indicator is button-shaped, a through hole for the leakage indicator to pass through is formed in the shell, and the leakage indicator is provided with a normal indication position which is not raised relative to the shell and a leakage tripping indication position which is raised relative to the shell, and can move relative to the shell.

The electric leakage indicator is provided with a second spring limiting groove, and the second movable part is limited in the second spring limiting groove.

The electric leakage locking piece comprises a central rotating shaft, a pushing part, a locking part and a tripping rotating shaft, wherein the pushing part, the locking part and the tripping rotating shaft are connected to the periphery of the central rotating shaft, the central rotating shaft is rotatably connected with the shell, and the electric leakage locking piece can rotate by taking the central shaft of the central rotating shaft as the center of a circle and has a normal position and a tripping position; the electric leakage lock catch piece is connected with a third reset spring, and the third reset spring has a reset function on the electric leakage lock catch piece to enable the electric leakage lock catch piece to be kept at a normal position; the pushing part is matched with the release, when the electric leakage locking piece is positioned at the normal position, the pushing part is positioned in front of the release, and when the electric leakage circuit is triggered, the electric leakage release acts to push the pushing part to overcome the reset action of the third reset spring so as to enable the electric leakage locking piece to rotate to the release position; the electric leakage indicating piece is provided with a locking groove and a tripping abutting part, the locking part is matched with the electric leakage indicating piece, and when the electric leakage locking piece is at a normal position and the electric leakage indicating piece is at a normal indicating position, the locking part is positioned in the locking groove, so that the electric leakage indicating piece is kept at the normal indicating position; when the electric leakage locking piece rotates to the release position, the locking part leaves the locking groove, the electric leakage indicating piece moves to the electric leakage release indicating position under the action of the second reset spring, and the locking part is matched with the release abutting part to enable the electric leakage locking piece to be kept at the release position.

The third reset spring is provided with a third fixed part, a third movable part and a third elastic deformation part connected with the third fixed part and the third movable part, the third reset spring is a torsion spring, the third elastic deformation part is a middle winding part of the torsion spring, the third fixed part and the third movable part are respectively two end rotating arm parts of the torsion spring, the third elastic deformation part is sleeved on a central rotating shaft, the inner wall of the shell is provided with a third spring abutting block, the third fixed part abuts against the third spring abutting block, the periphery of the central rotating shaft is provided with a fourth spring abutting block, and the third movable part abuts against the fourth spring abutting block.

The fourth spring abutting block is provided with a third spring limiting groove, and the third movable part is limited in the third spring limiting groove.

The first conductive piece is a first reset spring and is provided with a first fixed part, a first movable part and a first elastic deformation part connected between the first fixed part and the first movable part, the first fixed part is electrically connected with the circuit board or the zero sequence transformer, the first movable part is abutted against the test button to form a reset effect on the test button, and when the test button moves to a test position, the first movable part is combined with the second reset spring to form an electrical connection; the first elastic deformation part deforms and stores energy to enable the first movable part to form reset acting force on the test button.

The first reset spring is a torsion spring, the first elastic deformation part is a middle winding part of the torsion spring, the first fixing part and the first movable part are respectively two end rotating arm parts of the torsion spring, the inner wall of the shell is provided with a first torsion spring limiting shaft, the first elastic deformation part is wound on the first torsion spring limiting shaft, the first movable part corresponds to the second deformation part in position, and when the test button moves to the test position, the first movable part is combined with the second deformation part to form electric connection.

The test button is provided with a first elastic limit groove, and the first movable part is limited in the first elastic limit groove.

The beneficial effects of the utility model are as follows: the utility model cancels the electric leakage indication reset spring in the traditional small-sized electric leakage release, changes the static copper sheet into a conductive spring structure, not only is used for electric leakage test connection, but also realizes the reset function, reduces the number of parts and improves the assembly efficiency.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a schematic view of an external structure of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of an embodiment of the present utility model;

FIG. 3 is a schematic diagram illustrating the normal internal structure of an embodiment of the present utility model;

FIG. 4 is a schematic diagram illustrating the internal structure of an embodiment of the present utility model in a tripped state;

FIG. 5 is a schematic view of a leakage lock according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a test button according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a leakage indicator according to an embodiment of the present utility model;

in the figure, 1, a housing; 101, a waist-shaped hole; 102, a first torsion spring limiting shaft; 103, a second torsion spring limiting shaft; 104, a second spring abutment block; 105, a third spring abutment block; 2, a circuit board; 3, a zero sequence transformer; 4, a release; 5, a test button; 501, a first elastic limit groove; 6, an electric leakage indicator; 601, a locking groove; 602, trip abutment; 603, a second spring limit groove; 7, an electric leakage locking piece; 701, a central spindle; 702, a pushing part; 703, a latch portion; 704, tripping the rotating shaft; 705, fourth spring abutment block; 706, a third spring limit groove; 8, a first return spring; 9, a second return spring; 10, a third return spring.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.

The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.

1-2, the small-sized electric leakage tripping structure comprises a shell 1, a circuit board 2, a zero sequence transformer 3 and a tripping mechanism, wherein the circuit board 2, the zero sequence transformer 3 and the tripping mechanism are arranged in the shell 1, and the tripping mechanism comprises a tripping device 4, a test button 5, an electric leakage indicator 6, an electric leakage locking piece 7, a first conductive piece 8 and a second conductive piece 9.

The shell 1 is provided with a waist-shaped hole 101, the electric leakage lock catch piece 7 is provided with a tripping rotating shaft 704, and the tripping rotating shaft 704 penetrates through the waist-shaped hole 101 so as to be mechanically connected with a circuit breaker, thereby releasing a retaining mechanism and automatically opening the circuit breaker when electric leakage occurs.

The housing 1 is provided with a through hole for the test button 5 to pass through, and the test button 5 is provided with a test position and a non-test position which are movable relative to the housing 1. The leakage indicator 6 is connected with a first return spring 8, and the first return spring 8 has a return action on the test button 5 to enable the test button to be kept at a non-test position.

The leakage indicator 6 is button-shaped, a through hole for the leakage indicator 6 to pass through is formed in the shell 1, and the leakage indicator 6 is provided with a normal indication position which is not raised relative to the shell 1 and a leakage tripping indication position which is raised relative to the shell 1, wherein the leakage indicator 6 is movable relative to the shell 1. The leakage indicator 6 is connected with a second return spring 9, and the second return spring 9 has a return action on the leakage indicator 6 to enable the leakage indicator 6 to be kept at a leakage tripping indication position.

As shown in fig. 2 to 5, the leakage lock device 7 includes a central rotating shaft 701, a pushing portion 702 connected to the outer circumference of the central rotating shaft 701, a locking portion 703, and a releasing rotating shaft 704. The central rotating shaft 701 is rotatably connected with the housing 1, and the electric leakage locking member 7 can rotate around the central axis of the central rotating shaft 701, and has a normal position and a release position. The electric leakage locking piece 7 is connected with a third reset spring 10, and the third reset spring 10 has a reset function on the electric leakage locking piece 7 to keep the electric leakage locking piece in a normal position.

The pushing part 702 is matched with the release 4, when the electric leakage locking piece 7 is located at a normal position, the pushing part 702 is located in front of the release 4, and when an electric leakage circuit is triggered, the electric leakage release acts to push the pushing part 702 to overcome the reset action of the third reset spring 10 so that the electric leakage locking piece 7 rotates to a release position. As shown in fig. 7, the leakage indicator 6 is provided with a locking groove 601 and a trip abutting portion 602, the locking portion 703 is matched with the leakage indicator 6, and when the leakage locking member 7 is at a normal position and the leakage indicator 6 is at a normal indication position, the locking portion 703 is located in the locking groove 601, so that the leakage indicator 6 is kept at the normal indication position. When the leakage locking piece 7 rotates to the release position, the locking part 703 leaves the locking groove 601, the leakage indicator 6 moves to the leakage release indication position under the action of the second return spring 9, and the locking part 703 cooperates with the release abutting part 602 to keep the leakage locking piece 7 at the release position, so that the leakage locking piece cannot rotate to the normal position under the action of the third return spring 10.

The first reset spring 8 and the second reset spring 9 are respectively a first conductive piece and a second conductive piece which are made of conductive materials, the first reset spring 8 and the second reset spring 9 are respectively electrically connected with the circuit board 2 and the zero sequence transformer 3, when the test button 5 is in a non-test position, the first reset spring 8 and the second reset spring 9 are separated, and when the test button 5 is in a test position, the first reset spring 8 and the second reset spring 9 are combined to form electrical connection.

The first return spring 8 is provided with a first fixed part, a first movable part and a first elastic deformation part connected with the first fixed part and the first movable part, the first fixed part is electrically connected with the circuit board 2 or the zero sequence transformer 3, the first movable part is abutted against the test button 5 to form a return action on the test button 5, and when the test button 5 moves to a test position, the first movable part is combined with the second return spring 9 to form an electrical connection; the deformation and energy storage of the first elastic deformation part enables the first movable part to form a reset acting force on the test button 5.

The second return spring 9 has a second fixed portion, a second movable portion, and a second deformation portion connected between the second fixed portion and the second movable portion, where the second fixed portion is electrically connected with the circuit board 2 or the zero sequence transformer 3, the second movable portion is abutted to the leakage indicator 6, and when the leakage indicator 6 moves to a normal indication position, deformation and energy storage of the second deformation portion causes the second movable portion to form a return force on the leakage indicator 6.

The first return spring 8 is a torsion spring, the first elastic deformation portion is a middle winding portion of the torsion spring, the first fixing portion and the first movable portion are two end rotating arm portions of the torsion spring respectively, the inner wall of the shell 1 is provided with a first torsion spring limiting shaft 102, the first elastic deformation portion is wound on the first torsion spring limiting shaft 102, and the first fixing portion is abutted to the inner wall of the shell 1. The second return spring 9 is also a torsion spring, the second deformation part is a middle winding part of the torsion spring, the second fixing part and the second movable part are respectively two end rotating arm parts of the torsion spring, the inner wall of the shell 1 is provided with a second torsion spring limiting shaft 103, the second deformation part is wound on the second torsion spring limiting shaft 103, the inner wall of the shell 1 is provided with a second spring abutting block 104, and the second fixing part abuts against the second spring abutting block 104. When the test button 5 is moved to the test position, the first movable portion engages with the second deformation portion to form an electrical connection. Therefore, the position of the second torsion spring limiting shaft 103 is set, and the second torsion spring limiting shaft is set on the way that the first movable part is pushed to move, so that the first return spring 8 can be ensured to be electrically connected with the second return spring 9 under the driving of the test button 5.

Further, as shown in fig. 6, the test button 5 is provided with a first elastic limit groove 501, and the first movable part is limited in the first elastic limit groove 501.

Further, as shown in fig. 7, the leakage indicator 6 is provided with a second spring limiting groove 603, and the second movable part is limited in the second spring limiting groove 603.

The third return spring 10 has a third fixed part, a third movable part, and a third elastic deformation part connected to the third fixed part and the third movable part, the third return spring 10 is a torsion spring, the third elastic deformation part is a middle winding part of the torsion spring, the third fixed part and the third movable part are respectively two end rotating arm parts of the torsion spring, the third elastic deformation part is sleeved on the central rotating shaft 701, the inner wall of the housing 1 has a third spring abutting block 105, the third fixed part abuts against the third spring abutting block 105, a fourth spring abutting block 705 is arranged on the periphery of the central rotating shaft 701, and the third movable part abuts against the fourth spring abutting block 705.

Further, as shown in fig. 5, the fourth spring abutment block 705 is provided with a third spring limiting groove 706, and the third movable portion is limited in the third spring limiting groove 706.

In this embodiment, when the electric leakage locking member 7 is in a normal state, as shown in fig. 3, the electric leakage indicator 6 is in a normal indication position, the locking portion 703 is located in the locking groove 601, so that the electric leakage indicator 6 is kept in the normal indication position, at this time, the second deformation portion deforms and stores energy, so that the second movable portion forms a reset force on the electric leakage indicator 6, and the test button 5 is in a non-test position.

When the abnormal leakage phenomenon occurs, as shown in fig. 4, the release 4 is electrified to push the leakage latch member 7 to rotate to the release position, at this time, the latch portion 703 leaves the latch slot 601, the leakage indicator 6 moves to the leakage release indication position under the action of the second reset spring 9, that is, protrudes relative to the housing 1, the latch portion 703 cooperates with the release abutting portion 602 to keep the leakage latch member 7 at the release position, and cannot rotate to the normal position under the action of the third reset spring 10, the release rotating shaft 704 enables the idle opening to be unable to be directly closed, and only if the leakage indication button is pressed down, the latch is buckled into the indication button again, the idle opening can be closed.

In the test, the test button 5 is pressed to be in the test position, the first movable part is combined with the second deformation part to form the electrifying action of the electric connection release 4, and the leakage lock catch member 7 is pushed to rotate to the release position.

According to the embodiment, the functions of the test reset torsion spring and the movable copper sheet are combined to one part, the functions of the electric leakage indication reset spring and the static copper sheet are combined to one part, and compared with a conventional small-sized electric leakage release, the assembly efficiency can be improved due to the fact that two parts are integrally reduced in a visible product.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a small-size electric leakage tripping device, includes casing (1) and circuit board (2), zero sequence transformer (3) that set up in casing (1), tripping device includes release (4), test button (5), electric leakage indicator (6), electric leakage hasp spare (7), first electrically conductive spare and second electrically conductive spare are electric connection circuit board (2), zero sequence transformer (3) respectively, first electrically conductive spare and second electrically conductive spare separate and can make first electrically conductive spare and second electrically conductive spare joint formation electric connection through test button (5); the leakage indicator (6) is movable relative to the shell (1) and has a normal indication position and a leakage tripping indication position; the method is characterized in that: the second conductive member is a second return spring (9) and is provided with a second fixed part, a second movable part and a second deformation part connected with the second fixed part and the second movable part; the second fixed part is electrically connected with the circuit board (2) or the zero sequence transformer (3), the second movable part is abutted against the leakage indicator (6), and when the leakage indicator (6) is positioned at a normal indication position, the second deformation part is compressed to enable the second movable part to form acting force towards the leakage tripping indication position on the leakage indicator (6) positioned at the normal indication position.

2. The small-sized leakage trip structure according to claim 1, wherein: the second reset spring (9) is a torsion spring, the second deformation part is a middle winding part of the torsion spring, the second fixing part and the second movable part are two end rotating arm parts of the torsion spring respectively, the inner wall of the shell (1) is provided with a second torsion spring limiting shaft (103), the second deformation part is wound on the second torsion spring limiting shaft (103), and the first conductive part and the second deformation part can be connected through the test button (5) to form electric connection.

3. The small-sized leakage trip structure according to claim 2, wherein: the electric leakage indicator (6) is button-shaped, a through hole for the electric leakage indicator (6) to pass through is formed in the shell (1), and the electric leakage indicator (6) is provided with a normal indication position which is not raised relative to the shell (1) and an electric leakage tripping indication position which is raised relative to the shell (1) in a movable manner relative to the shell (1).

4. The small-sized leakage trip structure according to claim 3, wherein: the leakage indicator (6) is provided with a second spring limiting groove (603), and the second movable part is limited in the second spring limiting groove (603).

5. The small-sized leakage trip structure according to claim 3, wherein: the electric leakage locking piece (7) comprises a central rotating shaft (701), a pushing part (702) connected to the periphery of the central rotating shaft (701), a locking part (703) and a tripping rotating shaft (704), wherein the central rotating shaft (701) is rotatably connected with the shell (1), and the electric leakage locking piece (7) can rotate by taking the central shaft of the central rotating shaft (701) as the center of a circle and has a normal position and a tripping position; the electric leakage locking piece (7) is connected with a third reset spring (10), and the third reset spring (10) has a reset function on the electric leakage locking piece (7) to keep the electric leakage locking piece at a normal position; the pushing part (702) is matched with the release (4), when the electric leakage locking piece (7) is positioned at a normal position, the pushing part (702) is positioned in front of the release (4), and when an electric leakage circuit is triggered, the electric leakage release acts to push the pushing part (702) to overcome the reset action of the third reset spring (10) so as to enable the electric leakage locking piece (7) to rotate to a release position; the electric leakage indicator (6) is provided with a locking groove (601) and a tripping abutting part (602), the locking part (703) is matched with the electric leakage indicator (6), and when the electric leakage locking part (7) is at a normal position and the electric leakage indicator (6) is at a normal indication position, the locking part (703) is positioned in the locking groove (601) so as to enable the electric leakage indicator (6) to be kept at the normal indication position; when the electric leakage locking piece (7) rotates to a release position, the locking part (703) leaves the locking groove (601), the electric leakage indicating piece (6) moves to the electric leakage release indicating position under the action of the second reset spring (9), and the locking part (703) is matched with the release abutting part (602) to enable the electric leakage locking piece (7) to be kept at the release position.

6. The small-sized leakage trip structure according to claim 5, wherein: the third reset spring (10) is provided with a third fixed part, a third movable part and a third elastic deformation part connected with the third fixed part and the third movable part, the third reset spring (10) is a torsion spring, the third elastic deformation part is a middle winding part of the torsion spring, the third fixed part and the third movable part are respectively two end rotating arm parts of the torsion spring, the third elastic deformation part is sleeved on a central rotating shaft (701), the inner wall of the shell (1) is provided with a third spring abutting block (105), the third fixed part abuts against the third spring abutting block (105), a fourth spring abutting block (705) is arranged on the periphery of the central rotating shaft (701), and the third movable part abuts against the fourth spring abutting block (705).

7. The small-sized leakage trip structure according to claim 6, wherein: and a third spring limiting groove (706) is formed in the fourth spring abutting block (705), and the third movable part is limited in the third spring limiting groove (706).

8. The small-sized electrical leakage trip structure according to any one of claims 1 to 7, wherein: the first conductive piece is a first reset spring (8) and is provided with a first fixed part, a first movable part and a first elastic deformation part connected between the first fixed part and the first movable part, the first fixed part is electrically connected with the circuit board (2) or the zero sequence transformer (3), the first movable part is abutted against the test button (5) to form a reset effect on the test button (5), and when the test button (5) moves to a test position, the first movable part is combined with the second reset spring (9) to form an electrical connection; the first elastic deformation part deforms and stores energy so that the first movable part forms a reset acting force on the test button (5).

9. The small-sized leakage trip structure according to claim 8, wherein: the first reset spring (8) is a torsion spring, the first elastic deformation part is a middle winding part of the torsion spring, the first fixing part and the first movable part are two end rotating arm parts of the torsion spring respectively, the inner wall of the shell (1) is provided with a first torsion spring limiting shaft (102), the first elastic deformation part is wound on the first torsion spring limiting shaft (102), the first movable part corresponds to the second deformation part in position, and when the test button (5) moves to the test position, the first movable part is combined with the second deformation part to form electric connection.

10. The small-sized leakage trip structure according to claim 9, wherein: the test button (5) is provided with a first elastic limit groove (501), and the first movable part is limited in the first elastic limit groove (501).