CN218918758U - Circuit mechanism for leakage circuit breaker test - Google Patents

Abstract

The utility model relates to an electric leakage circuit breaker test loop mechanism, which comprises a shell, a torsion spring, a contact seat, a push rod and a conducting ring, wherein an installation cavity is formed in the shell, a first installation column and a second installation column are arranged in the installation cavity, the torsion spring comprises a sleeve joint ring, a first extension arm and a second extension arm, the sleeve joint ring is sleeved on the first installation column, the first extension arm is electrically connected with an external test button test loop mechanism through a first wire, the contact seat is rotatably arranged on the shell, the push rod is slidably arranged on the shell in a guiding manner, the conducting ring is sleeved on the second installation column, the conducting ring is electrically connected with an external circuit board through a second wire, and when the contact seat rotates to a closed position, the contact seat drives the push rod to move, and the push rod can prop the second extension arm on the conducting ring. By adopting the scheme, the circuit board is connected with the test button test loop mechanism and the circuit board, and when the circuit breaker mechanism is closed, the circuit board of the circuit breaker can execute simulated leakage only by touching the test button.

Description

Circuit mechanism for leakage circuit breaker test

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a leakage circuit breaker test loop mechanism.

Background

The leakage breaker is an electrical safety device capable of rapidly cutting off a power supply when electric leakage occurs so as to prevent an electric shock accident. The earth leakage breaker comprises a test button test loop mechanism which is explicitly specified in the installation and use specification GB13955 and must be pressed once a month to determine whether the earth leakage protection device of the earth leakage breaker can work normally.

The test button test loop mechanism comprises a test button, a pressure spring for providing reset biasing force for the test button, a movable spring reed positioned below the test button, and a static spring piece opposite to the movable spring reed, wherein the movable spring reed and the static spring piece are respectively electrically connected with the electronic component board through wires. When the test function is required to be started, the test button is pressed, the descending test button contacts with the movable spring reed below the test button and pushes the movable spring reed to move downwards until the movable end of the movable spring reed contacts with the static spring piece, so that a test loop is conducted, and an electronic component board of the circuit breaker executes simulated electric leakage; when the test function is not needed, the test button is stopped to be pressed, and the test button is reset under the action of the pressure spring, namely, the test button is restored to the position when not pressed.

However, if the electronic component board of the circuit breaker and the power connection line of the test circuit are connected to the wire inlet side in a simple manner, when the circuit breaker is not closed, the electronic component board of the circuit breaker accidentally touches the test button, and the electronic component board of the circuit breaker executes simulated leakage, at the moment, the leakage coil of the circuit breaker can be repeatedly attracted until the leakage coil burns out, so that property loss is caused, it is necessary to add a test circuit mechanism on the test circuit mechanism of the test button, and when the circuit breaker is closed, the test button is touched, and the electronic component board of the circuit breaker can execute simulated leakage.

Disclosure of Invention

The utility model overcomes the defects of the prior art, and provides a leakage breaker test loop mechanism which is connected with a test button test loop mechanism and a circuit board, and when the breaker mechanism is closed, the circuit board of the breaker can execute simulated leakage only by touching the test button.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides an electric leakage circuit breaker test loop mechanism, includes casing, torsional spring, contact seat, ejector pin and conducting ring, be provided with the installation cavity in the casing, be provided with first erection column and second erection column in the installation cavity, the torsional spring includes cup joints circle, first extension arm and second extension arm, cup joints the snare and establishes on first erection column, and first extension arm passes through first wire and is connected with outside test button test loop mechanism electricity, the contact seat rotates and sets up on the casing, and the ejector pin leads the setting of sliding on the casing, and the tip of ejector pin supports and establishes on the contact seat, and the second extension arm is located the slip orbit of ejector pin, and the conducting ring cover is established on second erection column, and the conducting ring passes through the second wire and is connected with outside circuit board electricity, and when the contact seat rotated to closed position, the ejector pin can be with the second extension arm support and establish on the conducting ring, realizes the conductive connection of second extension arm and conducting ring; when the contact seat rotates to the disconnection position, the second extension arm can drive the ejector rod to slide and reset, so that the disconnection between the second extension arm and the conducting ring is realized.

By adopting the scheme, the contact seat is driven by the external operating mechanism, and when the external operating mechanism performs closing operation, the contact seat can be driven to rotate towards the closing position, so that the contact seat is contacted with the fixed contact of the circuit breaker; when the contact seat rotates to the closed position, the contact seat drives the ejector rod to move, the ejector rod can prop the second extension arm on the conductive ring to realize the conductive connection of the second extension arm and the conductive ring, the test loop mechanism is closed, the test button is touched at the moment, the test loop mechanism of the test button is closed, and the circuit board of the circuit breaker can perform simulated leakage; when the contact seat rotates to the opening position, the second extension arm can drive the ejector rod to slide and reset, so that the second extension arm and the conducting ring are disconnected, the test loop mechanism is disconnected, the test button is touched at the moment, and even if the test loop mechanism of the test button is closed, the circuit board of the circuit breaker cannot execute simulated leakage.

The utility model is further provided with the following steps: the ejector rod is provided with the U-shaped groove in the one end that is close to the second extension arm, the ejector rod is provided with the arc surface in the one end that is close to the contact seat, and the U-shaped inslot is arranged in to the second extension arm, and the lower extreme of contact seat is provided with the conflict face, and the arc surface of ejector rod supports to press on the conflict face of contact seat.

Through adopting above-mentioned scheme, the U-shaped groove is used for locating the second extension arm, and the ejector pin can not the drunkenness when promoting the second extension arm, guarantees that the second extension arm contacts smoothly with the conducting ring, and the interference face of contact seat is inconsistent with the arc surface of ejector pin, and the contact seat can drive the ejector pin and remove when rotating to closed position.

The utility model is further provided with the following steps: the shell include well lid and well seat, form the installation cavity between well lid and the well seat, first erection column and the integrative setting of second erection column are covered in the well, and first erection column is located the top of second erection column, be provided with first counter bore on the first erection column, be provided with the second counter bore on the second erection column, be provided with first reference column and second reference column on the well seat respectively, first reference column inserts and locates first counter bore, second reference column inserts and locates the second counter bore.

Through adopting above-mentioned scheme, well lid and well seat pass through the mode fixed connection of pegging graft, and connected mode is simple, simple to operate, well lid and well seat are connected the back, can form independent installation cavity.

The utility model is further provided with the following steps: the middle cover is provided with two guide plates at intervals up and down, the two guide plates are parallel to each other, a guide groove for guiding and sliding of the ejector rod is formed between the two guide plates, the ejector rod is further provided with a stop surface, and when the second extension arm pushes the ejector rod to reset, the stop surface is propped against the end part of the guide plate.

Through adopting above-mentioned scheme, the ejector pin can slide along the guide way direction, well seat and well lid are fixed the back, and well seat can cover the guide way, avoids the ejector pin to take place the drunkenness, and the contact seat rotates the back to the disconnected position, and the second extension arm of torsional spring promotes the ejector pin return, and the end of locating plate is contradicted to the stop face stop surface, can restrict the travel distance of ejector pin.

The utility model is further provided with the following steps: the contact surface of the contact seat and the arc surface of the ejector rod are always tangent.

By adopting the scheme, the device can ensure good stability of the applied force.

The utility model is further provided with the following steps: the first extension arm is connected with the first wire through copper pipe conduction.

Through adopting above-mentioned scheme, copper pipe overcoat in first extension arm and first wire, not only can realize the conductive connection of first extension arm and first wire, can also realize the stable installation of both.

The utility model is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a disconnect position;

FIG. 2 is a schematic view of a contact position structure;

FIG. 3 is a schematic view of the structure of the middle cover;

FIG. 4 is a schematic view of the structure of the ejector pin;

fig. 5 is a schematic structural view of a contact base;

fig. 6 is a schematic structural view of the middle seat.

In the figure: 1. a housing; 11. a middle cover; 111. a first mounting post; 112. a second mounting post; 113. a first counterbore; 114. a second counterbore; 115. a guide plate; 116. a limiting block; 12. a middle seat; 121. a first positioning column; 122. a second positioning column; 13. a mounting cavity; 14. a guide groove; 2. a torsion spring; 21. sleeving a ring; 22. a first extension arm; 23. a second extension arm; 3. a contact base; 31. an abutting surface; 4. a push rod; 41. a U-shaped groove; 42. an arc surface; 43. a stop surface; 5. a conductive ring; 61. a first wire; 62. a second wire; 7. an external circuit board; 8. copper pipe.

Detailed Description

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

As shown in fig. 1-6, an electric leakage breaker test loop mechanism comprises a shell 1, a torsion spring 2, a contact seat 3, a push rod 4 and a conducting ring 5, wherein an installation cavity 13 is arranged in the shell 1, a first installation column 111 and a second installation column 112 are arranged in the installation cavity 13, the torsion spring 2 comprises a sleeve ring 21, a first extension arm 22 and a second extension arm 23, the sleeve ring 21 is sleeved on the first installation column 111, the first extension arm 22 is electrically connected with an external test button test loop mechanism through a first lead 61, the contact seat 3 is rotatably arranged on the shell 1, the push rod 4 is slidably arranged on the shell 1 in a guiding manner, the end part of the push rod 4 is abutted on the contact seat 3, the second extension arm 23 is positioned on the sliding track of the push rod 4, the conducting ring 5 is sleeved on the second installation column 112, the conducting ring 5 is electrically connected with an external circuit board 7 through a second lead 62, when the contact seat 3 rotates to a closed position, the contact seat 3 drives the push rod 4 to move, and the push rod 4 can abut the second extension arm 23 on the conducting ring 5 to realize the conducting connection of the second extension arm 23 and the conducting ring 5; when the contact seat 3 rotates to the disconnection position, the second extension arm 23 can drive the ejector rod 4 to slide and reset, so that the disconnection between the second extension arm 23 and the conducting ring 5 is realized.

In this embodiment, the ejector pin 4 is provided with a U-shaped groove 41 at one end close to the second extension arm 23, the ejector pin 4 is provided with an arc surface 42 at one end close to the contact base 3, the second extension arm 23 is disposed in the U-shaped groove 41, the lower end of the contact base 3 is provided with an abutting surface 31, and the arc surface 42 of the ejector pin 4 abuts against the abutting surface 31 of the contact base 3.

In this embodiment, the housing 1 includes a middle cover 11 and a middle seat 12, a mounting cavity 13 is formed between the middle cover 11 and the middle seat 12, a first mounting column 111 and a second mounting column 112 are integrally disposed on the middle cover 11, the first mounting column 111 is located above the second mounting column 112, a first counter bore 113 is disposed on the first mounting column 111, a second counter bore 114 is disposed on the second mounting column 112, a first positioning column 121 and a second positioning column 122 are integrally disposed on the middle seat 12 respectively, the first positioning column 121 is inserted into the first counter bore 113, and the second positioning column 122 is inserted into the second counter bore 114.

In this embodiment, two guide plates 115 are disposed at an upper-lower interval of the middle cover 11, the two guide plates 115 are parallel to each other, a guide groove 14 for guiding and sliding the ejector rod 4 is formed between the two guide plates 115, a stop surface 43 is further disposed on the ejector rod 4, and when the second extension arm 23 pushes the ejector rod 4 to reset, the stop surface 43 abuts against an end portion of the guide plate 115, so as to limit movement of the ejector rod 4.

In this embodiment, the contact surface 31 of the contact base 3 and the circular arc surface 42 of the jack 4 always maintain a tangential position.

In this embodiment, the first extension arm 22 and the first wire 61 are conductively coupled via the copper tube 8.

In this embodiment, the middle cover 11 is further provided with a limiting block 116, and the first extension arm 22 may be abutted against the limiting block 116.

The above embodiments are only preferred embodiments of the present utility model, and common variations and substitutions by those skilled in the art within the scope of the technical solution of the present utility model are included in the scope of the present utility model.

Claims (6)

1. The utility model provides an electric leakage circuit breaker test circuit mechanism which characterized in that: the device comprises a shell, a torsion spring, a contact seat, a push rod and a conducting ring, wherein an installation cavity is arranged in the shell, a first installation column and a second installation column are arranged in the installation cavity, the torsion spring comprises a sleeve joint ring, a first extension arm and a second extension arm, the sleeve joint ring is sleeved on the first installation column, the first extension arm is electrically connected with an external test button test loop mechanism through a first wire, the contact seat is rotationally arranged on the shell, the push rod is arranged on the shell in a guiding sliding manner, the end part of the push rod is propped against the contact seat, the second extension arm is positioned on the sliding track of the push rod, the conducting ring is sleeved on the second installation column, the conducting ring is electrically connected with an external circuit board through a second wire, and when the contact seat rotates to a closed position, the contact seat drives the push rod to move, and the push rod can prop against the second extension arm on the conducting ring to realize the conductive connection of the second extension arm and the conducting ring; when the contact seat rotates to the disconnection position, the second extension arm can drive the ejector rod to slide and reset, so that the disconnection between the second extension arm and the conducting ring is realized.

2. The leakage breaker test circuit mechanism of claim 1, wherein: the ejector rod is provided with the U-shaped groove in the one end that is close to the second extension arm, the ejector rod is provided with the arc surface in the one end that is close to the contact seat, and the U-shaped inslot is arranged in to the second extension arm, and the lower extreme of contact seat is provided with the conflict face, and the arc surface of ejector rod supports to press on the conflict face of contact seat.

3. The earth leakage breaker test circuit mechanism of claim 1 or 2, wherein: the shell include well lid and well seat, form the installation cavity between well lid and the well seat, first erection column and the integrative setting of second erection column are covered in the well, and first erection column is located the top of second erection column, be provided with first counter bore on the first erection column, be provided with the second counter bore on the second erection column, be provided with first reference column and second reference column on the well seat respectively, first reference column inserts and locates first counter bore, second reference column inserts and locates the second counter bore.

4. A residual current circuit breaker test circuit mechanism according to claim 3, wherein: the middle cover is provided with two guide plates at intervals up and down, the two guide plates are parallel to each other, a guide groove for guiding and sliding of the ejector rod is formed between the two guide plates, the ejector rod is further provided with a stop surface, and when the second extension arm pushes the ejector rod to reset, the stop surface is propped against the end part of the guide plate.

5. The leakage breaker test circuit mechanism of claim 2, wherein: the contact surface of the contact seat and the arc surface of the ejector rod are always tangent.

6. The earth leakage breaker test circuit mechanism of claim 1 or 2 or 5, wherein: the first extension arm is connected with the first wire through copper pipe conduction.

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