CN216902734U - Electric leakage mechanism and circuit breaker - Google Patents

Abstract

The utility model relates to the technical field of electrical equipment, in particular to an electric leakage mechanism and a circuit breaker; the circuit breaker comprises an electric leakage mechanism, wherein the electric leakage mechanism comprises a shell, a circuit board, a first testing piece, a second testing piece and a moving piece; the circuit board is arranged on the shell, and the first test piece and the second test piece are connected with the circuit board; the moving part is connected with the first test piece, and the moving part can contact or separate with the second test piece. The structure of the leakage mechanism is simplified, and the leakage test can be reliably carried out.

Description

Electric leakage mechanism and circuit breaker

Technical Field

The utility model relates to the technical field of electrical equipment, in particular to an electric leakage mechanism and a circuit breaker.

Background

The breaker is mainly used for short circuit, overload and leakage protection, and is a necessity of a terminal distribution circuit. The circuit breaker is usually configured with a test circuit for manually simulating the leakage condition, so as to detect the leakage protection function of the circuit breaker through the test circuit.

However, the related art provides a circuit breaker in which the leakage mechanism is configured with a complicated test circuit structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric leakage mechanism and a circuit breaker, which can simplify the structure of the electric leakage mechanism.

The embodiment of the utility model is realized by the following steps:

in a first aspect, the present invention provides a leakage mechanism comprising:

a housing;

the circuit board is arranged on the shell;

the first test piece is connected with the circuit board;

the second test piece is connected with the circuit board;

the moving part is connected with the first testing part and can be contacted with or separated from the second testing part.

In an alternative embodiment, the movable member includes an elastic member, the elastic member is connected to the first test member, the elastic member can be in contact with or separated from the second test member, and the elastic member always has a movement tendency to be separated from the second test member.

In an optional embodiment, the elastic member is a torsion spring, a first torsion arm of the torsion spring is connected with the first test piece, a second torsion arm of the torsion spring can be contacted with or separated from the second test piece, and the second torsion arm always has a movement tendency of being separated from the second test piece.

In an optional embodiment, the movable member further includes a button movably disposed on the housing, the button cooperating with the elastic member, and the button enabling the elastic member to contact the second testing member.

In an alternative embodiment, the housing is provided with a first guide post, the button being a sliding fit with the first guide post.

In an optional embodiment, the first test piece comprises a contact pin and a test wire, the contact pin is connected with one end of the test wire, and the other end of the test wire is connected with the circuit board; the contact pin is inserted into the shell, and the contact pin is connected with the movable piece.

In an alternative embodiment, the housing is provided with a positioning groove and a second guiding column, and the second guiding column is used for guiding the insertion pin to be inserted into the positioning groove.

In an alternative embodiment, the second guide post is provided with an arc-shaped concave surface, and the contact pin can be in sliding fit with the arc-shaped concave surface.

In an alternative embodiment, the leakage mechanism further includes a transformer provided to the housing, and one of the first test piece and the second test piece passes through the transformer.

In a second aspect, the present invention provides a circuit breaker comprising the leakage mechanism of any of the preceding embodiments.

The electric leakage mechanism of the embodiment of the utility model has the beneficial effects that: the leakage mechanism provided by the embodiment of the utility model comprises a shell, a circuit board, a first test piece, a second test piece and a movable piece; the circuit board is arranged on the shell, and the first test piece and the second test piece are both connected with the circuit board; the moving part is connected with the first test piece, and the moving part can contact with or separate from the second test piece. When the electric leakage mechanism is tested in the test, the movable part is contacted with the second testing part, so that the first testing part and the second testing part can be communicated by the movable part, namely, the electric leakage testing loop is communicated.

The circuit breaker of the embodiment of the utility model has the beneficial effects that: the circuit breaker provided by the embodiment of the utility model comprises the electric leakage mechanism, and the structure of the electric leakage mechanism is simplified, so that the overall structure of the circuit breaker is relatively simplified.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a leakage mechanism in a first view according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first test piece according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a layout structure of a leakage mechanism according to an embodiment of the present invention;

FIG. 4 is an enlarged view taken at IV in FIG. 3;

FIG. 5 is a schematic structural diagram of a leakage mechanism in a second view angle according to an embodiment of the present invention;

fig. 6 is an enlarged view taken at vi in fig. 5.

Icon: 010-a leakage mechanism; 100-a housing; 101-a circuit board; 102-a transformer; 103-a release; 104-a push rod; 105-a connecting-rod assembly; 110-a first test piece; 111-pin; 112-test line; 120-a second test piece; 130-a movable member; 140-torsion spring; 141-a first torque arm; 142-a second torque arm; 143-positioning shaft; 150-a button; 151-first guide post; 152-a plug groove; 160-positioning grooves; 161-a second guide post; 162-arc concave.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element which is referred to must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present embodiment provides a circuit breaker that can be used for overload, short circuit, and earth leakage protection. The circuit breaker comprises an idle opening mechanism and a leakage mechanism 010 (as shown in fig. 1), wherein the leakage mechanism 010 is assembled on the idle opening mechanism, and when leakage occurs, the leakage mechanism 010 can enable the idle opening mechanism to trip, so that a protection effect is realized.

Referring to fig. 1, the leakage mechanism 010 includes a housing 100, and a circuit board 101, a transformer 102, a release 103, and a link assembly 105 disposed on the housing 100; when electric leakage occurs, the mutual inductor 102 sends a signal to the circuit board 101, the circuit board 101 controls the push rod 104 of the tripper 103 to move, the push rod 104 can drive the connecting rod assembly 105 to trip, and then the circuit can be cut off by the idle opening mechanism through the connecting rod assembly 105.

It should be noted that the specific structures, the operating principles, and the manners of disposing the circuit board 101, the transformer 102, the trip unit 103, and the connecting rod assembly 105 in the housing 100 are similar to those of the related art, and are not described herein again.

In order to detect the leakage protection function of the circuit breaker in the using process of the circuit breaker, a test loop is further arranged on the leakage mechanism 010, so that the leakage can be simulated manually through the test loop, and the performance of the leakage mechanism 010 is detected. The test loop provided by the related technology has at least two breakpoints which can be switched on and off, and when the leakage test is carried out, all the breakpoints need to be communicated to realize the conduction of the test loop; because the test circuit that the correlation technique provided is provided with a plurality of breakpoints, so its structure is more complicated, and the cost of setting, assembly is higher.

Referring to fig. 1, the leakage mechanism 010 of the embodiment includes a movable member 130, a first testing member 110 and a second testing member 120, the first testing member 110 and the second testing member 120 can be disposed on the housing 100, and the first testing member 110 and the second testing member 120 are connected to the circuit board 101; the movable member 130 is connected to the first test element 110, and the movable member 130 can contact or separate from the second test element 120. When the leakage mechanism 010 is tested, the movable member 130 is contacted with the second testing part 120, so that the first testing part 110 and the second testing part 120 can be communicated by the movable member 130, namely, a leakage testing loop is communicated.

The first and second test pieces 110 and 120 are similar in structure and assembly to the housing 100, and will be described in detail only by way of example of the first test piece 110.

Referring to fig. 2, the first testing member 110 includes a pin 111 and a testing line 112, the pin 111 is connected to one end of the testing line 112, and the other end of the testing line 112 is connected to the circuit board 101; the pin 111 is inserted into the housing 100, and the pin 111 is connected to the movable member 130. The ease of assembly of the first test piece 110 is ensured by the insertion of the pins 111 into the housing 100.

It should be understood that the movable member 130 can contact or separate from the contact pin of the second test element 120, and when the movable member 130 contacts the contact pin of the second test element 120, the first test element 110 and the second test element 120 are conducted through the movable member 130, so as to perform the leakage test.

Furthermore, the contact pin 111 is formed by punching and curling the copper sheet, and the contact pin 111 is connected to the test wire 112 in a press riveting manner; in this way, the automatic production of the first test piece 110 and the second test piece 120 is facilitated to improve the production efficiency.

It should be noted that the connection manner of the end of the test line 112 not connected to the pin 111 and the circuit board 101 is similar to that of the related art, and is not limited herein.

Optionally, one of both the first test piece 110 and the second test piece 120 passes through the transformer 102.

Referring to fig. 1, the second testing part 120 of the present embodiment passes through the transformer 102, which may refer to: the test wire of the second test piece 120 is wound around the outside of the transformer 102; of course, the second test piece 120 passes through the transformer 102, and may also refer to: the test line of the second test piece 120 passes through the surface of the transformer 102.

In other embodiments, it is also possible that the first test piece 110 passes through the transformer 102.

It should be understood that in other embodiments, neither the first test piece 110 nor the second test piece 120 passes through the transformer 102, but they may also be located at both ends of the transformer 102, respectively.

Referring to fig. 3 and 4, in the embodiment, the housing 100 is provided with a positioning groove 160, and the pin 111 is inserted into the positioning groove 160; with such an arrangement, the ease of assembling the first test piece 110 to the housing 100 is ensured, and the assembling structure is simple.

Further, the housing 100 is further provided with a second guiding column 161, and the second guiding column 161 is used for guiding the insertion of the insertion pin 111 into the positioning slot 160. With this arrangement, the accuracy of assembling the contact pins 111 to the housing 100 by using the second guide posts 161 is ensured, and the efficiency of assembling the first test piece 110 to the housing 100 can be improved.

Still further, a second guiding column 161 is disposed at the notch of the positioning slot 160, the second guiding column 161 is provided with an arc concave surface 162, and the contact pin 111 can be slidably fitted with the arc concave surface 162; specifically, when the first testing piece 110 is assembled, the first testing piece 110 can slide into the positioning groove 160 along the arc concave surface 162, thereby ensuring that the first testing piece 110 is reliably and accurately assembled to the housing 100.

Optionally, the arc concave surface 162 is smoothly connected to a groove wall of the positioning groove 160, so that the first testing member 110 can smoothly move to be inserted into the positioning groove 160 when sliding along the arc concave surface 162.

In order to ensure the stability and reliability of the insertion of the pin 111 into the housing 100, the leakage mechanism 010 further includes a cover plate (not shown) disposed on the housing 100 and configured to prevent the pin 111 from being separated from the housing 100. Optionally, the cover plate can contact or abut against the pins 111 to prevent the pins 111 from separating from the positioning slots 160; of course, in other embodiments, the cover plate can have a certain clearance with the pin 111, so long as it is ensured that the pin does not completely disengage from the positioning groove 160.

The manner of disposing the cover plate on the housing 100 can be selected according to the requirement, for example: clamping, or fastening with a fastener such as a bolt, etc., and is not particularly limited herein.

Referring to fig. 5 and 6, the movable element 130 of the present embodiment includes an elastic element, the elastic element is connected to the first testing element 110, the elastic element can contact with or separate from the second testing element 120, and the elastic element always has a motion of separating from the second testing element 120. With such arrangement, when the leakage test is required, the elastic member can be contacted with the second test member 120, and the first test member 110 and the second test member 120 can be conducted through the elastic member; after the test is finished, the elastic piece is separated from the second testing piece 120 under the elastic action of the elastic piece, so that the first testing piece 110 and the second testing piece 120 can be disconnected, the electric leakage mechanism 010 is ensured to work reliably, a testing loop cannot be conducted all the time, and the phenomenon of instantaneous power-on jump of the circuit breaker is improved.

The elastic piece can be selected according to the requirement; the elastic member of the present embodiment is a torsion spring 140, a first torsion arm 141 of the torsion spring 140 is connected to the first testing member 110, a second torsion arm 142 of the torsion spring 140 can contact with or separate from the second testing member 120, and the second torsion arm 142 always has a movement tendency of separating from the second testing member 120; specifically, the first torsion arm 141 abuts against the pin 111 of the first test piece 110, the second torsion arm 142 can contact with or separate from the pin of the second test piece 120, and when the second torsion arm 142 contacts with the pin of the second test piece 120, the first test piece 110 and the second test piece 120 are conducted through the torsion spring 140, so as to perform the leakage test; when the test is finished, the second torsion arm 142 is separated from the pin of the second test piece 120 under its own elastic force, so that the first test piece 110 and the second test piece 120 can be disconnected.

It should be noted that the torsion spring 140 is adopted to realize the on-off switching of the circuit, so that the hand feeling is good, the service life is long, and the user experience is favorably improved; moreover, the first torsion spring 140 can be reliably abutted against the pin 111 of the first test piece 110 by the elastic action of the torsion spring 140 itself, and the first torsion spring 140 and the pin 111 of the first test piece 110 are not easily separated by interference of factors such as high and low temperatures, humidity, or deformation of other parts, and the structure is simple and reliable.

Of course, in other embodiments, the elastic member may also be an elastic plate or a spring, which is not limited herein.

In order to ensure that the torsion spring 140 is reliably and conveniently disposed on the housing 100, the housing 100 is connected to a positioning shaft 143, and the torsion spring 140 is sleeved on the positioning shaft 143.

Of course, in other embodiments, the torsion spring 140 may be connected to the housing 100 by a fastener such as a bolt.

In order to ensure the easy operation of the user for conducting the leakage test, please continue to refer to fig. 6, the movable member 130 further includes a button 150, the button 150 is movably disposed on the housing 100, the button 150 is engaged with the elastic member, and the button 150 enables the elastic member to contact the second testing member 120; specifically, the button 150 can be engaged with the second torsion arm 142, and when the user presses the button 150, the button 150 drives the second torsion arm 142 to swing, so that the second torsion arm 142 contacts with the pin of the second test piece 120.

The housing 100 is provided with an opening, and the button 150 can extend and retract relative to the housing 100 from the opening; the second torsion arm 142 is inserted into the button 150, and the button 150 always has a tendency to protrude out of the housing 100 through the opening under the elastic action of the torsion spring 140. When the leakage test is performed, a user presses the button 150, so that the button 150 retracts into the casing 100 from the opening, and the button 150 drives the second torsion arm 142 to move, so that the second torsion arm 142 contacts with a pin of the second test piece 120, and the first test piece 110 and the second test piece 120 can be communicated through the torsion spring 140, and the test is realized; when the test is finished, the second torsion arm 142 drives the button 150 to extend out of the housing 100 from the opening under the elastic action of the torsion spring 140, and is separated from the pin of the second test piece 120, so that the second test piece 120 and the first test piece 110 can be disconnected.

Optionally, the button 150 is provided with a socket 152, and the second torsion spring 140 is plugged with the socket 152. Of course, in other embodiments, the button 150 is provided with a socket hole, and the second torsion spring 140 is plugged with the socket hole.

Further, the housing 100 is provided with a first guide post 151, and the button 150 is slidably fitted with the first guide post 151; specifically, the button 150 is slidably fitted with a first guide post 151, and the first guide post 151 is used to guide the button 150 to extend from or retract into the housing 100. With this arrangement, the problem that the movement path of the push button 150 is likely to deviate is solved, and the push button 150 is reliably extended from the opening to the housing 100.

When the leakage mechanism 010 of this embodiment performs a leakage test, a user may press the button 150, so that the button 150 drives the second torsion arm 142 to move, and the second torsion arm 142 contacts with a pin of the second test piece 120, that is, the torsion spring 140 may be used to communicate the first test piece 110 with the second test piece 120, thereby implementing the leakage test; when the test is finished, the second torsion arm 142 is separated from the pin of the second test piece 120 under the elastic action of the torsion spring 140, and the second torsion arm 142 drives the button 150 to extend out of the housing 100 from the opening.

As described above, the leakage mechanism 010 of the circuit breaker according to the present invention has a simple structure, can reduce the cost, and can reliably detect the leakage.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An electrical leakage mechanism, comprising:

a housing (100);

a circuit board (101), wherein the circuit board (101) is arranged on the shell (100);

a first test piece (110), wherein the first test piece (110) is connected with the circuit board (101);

a second test piece (120), wherein the second test piece (120) is connected with the circuit board (101);

the movable piece (130), the movable piece (130) is connected with the first test piece (110), and the movable piece (130) can contact with or separate from the second test piece (120).

2. The leakage mechanism according to claim 1, wherein the movable member (130) comprises an elastic member connected to the first test member (110), the elastic member being capable of contacting with or separating from the second test member (120), and the elastic member always having a tendency to move away from the second test member (120).

3. A leakage mechanism according to claim 2, characterized in that the resilient member is a torsion spring (140), a first torsion arm (141) of the torsion spring (140) is connected to the first test member (110), a second torsion arm (142) of the torsion spring (140) is capable of contacting or separating from the second test member (120), and the second torsion arm (142) always has a tendency to move away from the second test member (120).

4. A leakage mechanism according to claim 2, wherein the movable member (130) further comprises a button (150), the button (150) is movably disposed on the housing (100), the button (150) cooperates with the elastic member, and the button (150) enables the elastic member to contact the second testing member (120).

5. Creepage mechanism according to claim 4, characterized in that the housing (100) is provided with a first guiding post (151), the push button (150) being a sliding fit with the first guiding post (151).

6. A leakage mechanism according to any of claims 1-5, characterized in that the first test piece (110) comprises a pin (111) and a test wire (112), the pin (111) is connected with one end of the test wire (112), and the other end of the test wire (112) is connected with the circuit board (101); the contact pin (111) is connected with the shell (100) in an inserting mode, and the contact pin (111) is connected with the movable piece (130).

7. The leakage mechanism according to claim 6, wherein the housing (100) is provided with a positioning groove (160) and a second guiding column (161), and the second guiding column (161) is used for guiding the insertion pin (111) to be inserted into the positioning groove (160).

8. Creepage mechanism according to claim 7, characterized in that the second guiding column (161) is provided with an arc-shaped concave surface (162), the contact pin (111) being able to slidingly engage with the arc-shaped concave surface (162).

9. The leakage mechanism according to claim 1, further comprising a transformer (102), wherein the transformer (102) is provided to the housing (100), and one of the first test piece (110) and the second test piece (120) passes through the transformer (102).

10. A circuit breaker comprising an electrical leakage mechanism according to any one of claims 1 to 9.

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