CN210778468U

CN210778468U - Circuit breaker testing device and circuit breaker with same

Info

Publication number: CN210778468U
Application number: CN201922113738.XU
Authority: CN
Inventors: 汪联峰; 谭智超; 杨鑫
Original assignee: Garcia Electrical Appliance Co ltd
Current assignee: Garcia Electrical Appliance Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-06-16
Anticipated expiration: 2029-11-29

Abstract

The utility model provides a circuit breaker testing device, including handle, handle spring, test button, connecting conductor, test resistance, first test contact and second test contact, wherein the handle spring has a expansion end at least, the expansion end of handle spring rotates along with the handle, test button spring and handle spring electric connection, handle spring is contradicted with first test contact along with handle rotation combined floodgate back handle spring expansion end, the break-off between separating brake or the back handle spring expansion end that breaks off and the first test contact to make electric leakage test return circuit be in off-state. The utility model discloses a with handle spring and test button spring electric connection, then with handle spring expansion end along with the handle activity, realize handle spring and the conflict and the separation of first test contact to simplified the structure in test circuit under the condition that can reach the same purpose, reduced spare part, practiced thrift the cost.

Description

Circuit breaker testing device and circuit breaker with same

Technical Field

The utility model belongs to the technical field of the circuit breaker, especially, relate to test device in the circuit breaker.

Background

With the development of electrical automation, a miniature electronic leakage circuit breaker has become an electrical appliance widely applied to a low-voltage terminal power distribution system. The leakage circuit breaker is used for performing leakage protection, overload protection and the like on the power frequency power supply. When a power failure occurs, such as electric shock or circuit leakage current exceeding a specified value, the leakage circuit breaker can generate protection actions, such as tripping and the like, within a very short time, automatically cut off the power supply, ensure personal safety and prevent accidents caused by the occurrence of leakage current of equipment. The leakage circuit breaker has overload and short-circuit protection functions, can be used for protecting overload and short circuit of a line, and can also be used for infrequent switching of the line under normal conditions.

In the conventional electronic leakage circuit breaker commonly used at present, a wiring terminal at the upper part of the electronic leakage circuit breaker is taken as an incoming line of a power supply and is generally called as an upper incoming line, and a wiring terminal at the lower part of the electronic leakage circuit breaker is generally taken as a connection of a load and is called as a lower outgoing line. It is generally required that the upper incoming line on the power supply side and the lower outgoing line on the load side are not misconnected, i.e. the power supply cannot be connected to the lower outgoing line, and the load cannot be connected to the upper incoming line. Once miswired, a so-called reverse wiring or down-line can damage the product. This is because the earth leakage protection function portion of the electronic earth leakage breaker needs to take power from the power supply side. If the upper incoming line is correctly connected with the power supply, the circuit breaker receives the leakage signal to trip, and simultaneously cuts off the power supply of the leakage protection function part; however, if the lower outgoing line is erroneously connected to the power supply, even if the circuit breaker is in an off state after being tripped, the leakage protection function portion is continuously charged, and at this time, the test circuit of the leakage protection function portion is always in an on state (for example, a user presses a test button of the leakage circuit breaker and does not put), and the test circuit causes the leakage protection function portion to continuously operate (continuously sends a leakage signal to the circuit breaker) to cause that electronic components of the leakage protection function portion are burned out, thereby damaging the whole leakage circuit breaker.

Therefore, in order to prevent the damage of the residual current circuit breaker caused by the wrong connection of the wiring, it is preferable that the residual current circuit breaker has a reverse wiring function, that is, even if the power supply is connected to the lower outgoing line and the load is connected to the upper incoming line, the residual current circuit breaker can still work normally, and when the circuit breaker is in an off state due to the protection reasons such as leakage or the test protection reasons, the residual current circuit breaker is not damaged, and even the whole residual current circuit breaker is damaged.

Notice is CN102194619B and discloses a test device and have this test device's circuit breaker for circuit breaker, this circuit breaker test device structure contains test button, test button spring, connecting conductor, lever, test resistor, and its structure is too complicated, need just can realize through mechanical component transmission lever, and the cost is great.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a low-cost circuit breaker test device and install device's circuit breaker is provided.

In order to realize the purpose, the utility model adopts the technical scheme that:

the circuit breaker testing device comprises a handle, a handle spring, a testing button, a connecting conductor, a testing resistor, a first testing contact and a second testing contact, wherein two ends of the testing resistor are respectively connected with an N-level main circuit and the second testing contact through the connecting conductor, and the first testing contact is connected with an L-level main circuit through the connecting conductor. Wherein the handle spring has a movable end at least, and the movable end of handle spring rotates along with the handle, test button spring and handle spring electric connection, handle spring is contradicted with first test contact along with handle rotation combined floodgate back handle spring movable end, the disconnection between separating brake or the back handle spring movable end that breaks off and the first test contact to make electric leakage test return circuit be in the off-state.

The utility model has the advantages that: the utility model discloses a with handle spring and test button spring electric connection, then with handle spring expansion end along with the handle activity, realize handle spring and the conflict and the separation of first test contact to simplified the structure in test circuit under the condition that can reach the same purpose, reduced spare part, practiced thrift the cost.

Drawings

FIG. 1 is a schematic view of the present invention with the cover removed;

FIG. 2 is a schematic view of a test button spring and a handle spring according to an embodiment;

FIG. 3 is a schematic view of the handle;

FIG. 4 is a schematic structural diagram of a test button;

fig. 5 is a schematic structural view of a test button spring and a handle spring according to the second embodiment.

Detailed Description

The present invention will be further described with reference to the following examples.

Example one

As shown in fig. 1-4, the circuit breaker includes an insulating housing 1, a cover (not shown), a mechanical assembly 2, an electrical leakage release 3, a movable contact 4, a fixed contact 5, and a testing device, wherein the movable contact 4 is connected to the mechanical assembly 2 through a movable contact support, the above mechanisms except the testing device are the prior art, and are not described in detail herein, the specific structure of the circuit breaker testing device is described in detail below, the circuit breaker testing device includes a handle 6, a handle spring 7, a testing button spring 8, a testing button 9, a connecting conductor, a testing resistor 10, a first testing contact 11 and a second testing contact 12, the handle 6 is movably connected to the housing through a pin, the handle 6 is in transmission connection with the mechanical assembly 2, two ends of the testing resistor 10 are respectively connected to an N-stage main circuit and the second testing contact 12 through the connecting conductor, the first test contact 11 is connected with the L-level main circuit through a connecting conductor, in this embodiment, the test resistor 10 is installed on a circuit board, the circuit board is clamped between the housing and the cover, wherein the handle spring 7 at least has a first movable end 71, the first movable end 71 of the handle spring 7 rotates along with the handle 6, the handle 6 is provided with an annular groove for the handle spring 7 to be sleeved in, the handle spring 7 is sleeved with the handle 6, the handle 6 is provided with a clamping protrusion 61 for pushing the first movable end 71 of the handle spring 7 to move towards the first test contact 11, the handle 6 pushes the first movable end 71 of the handle spring 7 to move through the clamping protrusion 61 when rotating, and the first movable end 71 is contacted and conducted with the first test contact 11. Test button spring 8 and handle spring 7 electric connection, handle spring 7 is contradicted with first test contact 11 along with handle 6 rotates the back handle spring 7 active end of closing a floodgate, the disconnection between the first active end 71 of handle spring 7 and first test contact 11 behind the dropout of electric leakage release 3 or the separating brake of handle 6 back handle spring 7 to make electric leakage test return circuit be in off-state, the disconnection reason is because the back is tripped to electric leakage release 3 or handle 6 separating brake back handle spring 7 can automatic re-setting owing to there is not the protruding 61 thrust of handle 6 card, first active end 71 keeps away from first test contact 11 this moment.

The test button spring 8 is movably sleeved on the convex column of the insulating shell 1, the test button spring 8 at least has a second movable end 81, the second movable end 81 extends into the movable track range of the test button 9, the test button 9 is movably connected onto the insulating shell 1, the prior art does not describe in detail, and the second movable end 81 of the test button spring 8 is abutted to the second test contact 12 when the test button 9 is pressed. Handle

spring

7 and 8 integral type structures of test button spring, handle

spring

7 and 8 integral type structures of test button spring are as an organic whole for the stiff end of two torsional springs in this embodiment, and the concrete structure refers to figure 2, 9 tip of test button be equipped with a

bayonet socket

91, 8 one end of test button spring extend to this bayonet socket 91 department. The bayonet 91 is a V-shaped structure, so that the movable end of the button spring 8 can be conveniently tested and clamped, and the installation is convenient.

Example two

As shown in fig. 5, the present embodiment is different from the first embodiment in that: handle spring 7 and test button spring 8 are split type structure, handle spring 7 and test button spring 8 electric connection.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. Breaker test device, including handle, handle spring, test button, connecting conductor, first test contact and second test contact, its characterized in that: wherein the handle spring has a movable end at least, and the movable end of handle spring rotates along with the handle, test button spring and handle spring electric connection, handle spring is contradicted with first test contact along with handle rotation combined floodgate back handle spring movable end, the disconnection between separating brake or the back handle spring movable end that breaks off and the first test contact to make electric leakage test return circuit be in the off-state.

2. The circuit breaker testing apparatus of claim 1, wherein: the testing device further comprises a testing resistor, two ends of the testing resistor are respectively connected with the N-level main circuit and the second testing contact through connecting conductors, and the first testing contact is connected with the L-level main circuit through a connecting conductor.

3. The circuit breaker testing apparatus of claim 1, wherein: the handle spring is sleeved with the handle, and the handle is provided with a clamping protrusion for pushing the movable end of the handle spring to move towards the first test contact.

4. The circuit breaker testing apparatus of claim 1, 2 or 3, wherein: the test button spring is provided with at least one movable end, the movable end extends into the movable track range of the test button, and the movable end of the test button spring is abutted against the second test contact when the test button is pressed down.

5. The circuit breaker testing apparatus of claim 4, wherein: the handle spring and the test button spring are of an integrated structure or a split structure, and the handle spring and the test button spring are electrically connected when being split.

6. The circuit breaker testing apparatus of claim 1, 2 or 3, wherein: the end part of the test button is provided with a bayonet, and one end of the test button spring extends to the bayonet.

7. The utility model provides a circuit breaker, this circuit breaker includes insulating casing, mechanical component, electric leakage release, moving contact, static contact and testing arrangement, and wherein the moving contact is connected its characterized in that with mechanical component through the moving contact support: the circuit breaker testing device comprises a handle, a handle spring, a testing button, a connecting conductor, a testing resistor, a first testing contact and a second testing contact, wherein the two ends of the testing resistor are respectively connected with an N-level main circuit and a second testing contact through the connecting conductor, the first testing contact is connected with an L-level main circuit through the connecting conductor, the handle spring at least has a movable end, the movable end of the handle spring rotates along with the handle, the testing button spring is electrically connected with the handle spring, the movable end of the handle spring is abutted against the first testing contact after the handle spring is switched on along with the rotation of the handle, and the movable end of the handle spring is disconnected from the first testing contact after the switch is switched off or the switch is released, so that the electric leakage testing loop is in a disconnected state.

8. The circuit breaker of claim 7, wherein: the handle spring is sleeved with the handle, and the handle is provided with a clamping protrusion for pushing the movable end of the handle spring to move towards the first test contact.

9. The circuit breaker of claim 7 or 8, wherein: the test button spring is provided with at least one movable end, the movable end extends into the movable track range of the test button, and the movable end of the test button spring is abutted against the second test contact when the test button is pressed down.

10. The circuit breaker of claim 9, wherein: handle spring and test button spring integral type structure or split type structure, both electric connection when handle spring and test button spring components of a whole that can function independently, test button tip be equipped with a bayonet socket, test button spring one end extends to this bayonet socket department.