CN219658638U - Circuit breaker - Google Patents

Abstract

The embodiment of the utility model provides a circuit breaker, and relates to the technical field of power distribution equipment. The circuit breaker comprises a shell, an operating mechanism and an indicating mechanism; the shell comprises an indication wall, and the indication wall is provided with an indication opening; the operating mechanism is arranged in the shell and comprises a jump buckle which can be driven to rotate in the shell; the indicating mechanism comprises a fault indicating piece, wherein the fault indicating piece is positioned between the indicating wall and the jump buckle and is rotationally connected with the shell; when the circuit protected by the circuit breaker is not failed, the jump buckle is not contacted with the fault indicator, and the fault indicator is dislocated with the indication port; when the circuit breaker trips due to the fault of the circuit, the fault indicator is driven by the trip button to rotate to be opposite to the indication port. According to the technical scheme of the embodiment of the utility model, when the fault indicator can be observed from the indication port, the circuit fault protected by the circuit breaker can be confirmed, and when the fault indicator cannot be observed from the indication port, the circuit protected by the circuit breaker can be confirmed to be not faulty.

Description

Circuit breaker

Technical Field

The embodiment of the utility model relates to the technical field of power distribution equipment, in particular to a circuit breaker.

Background

The miniature circuit breaker belongs to low-voltage distribution equipment, can realize the on-off control to the distribution circuit to play the guard action to the distribution circuit when the trouble takes place.

Typically, the lines protected by miniature circuit breakers include an un-failed condition and a failed condition based on the actual condition of the distribution circuit. However, since a plurality of mechanisms constituting the circuit breaker are enclosed in the case, it is difficult to judge the specific state of the line protected by the circuit breaker from the outside. Therefore, it is necessary to provide an indication mechanism in the circuit breaker to indicate the non-fault state and the fault state of the line protected by the circuit breaker.

Disclosure of Invention

In view of the above, embodiments of the present utility model provide a circuit breaker to solve the problem that it is difficult to determine the specific state of a line protected by the circuit breaker from the outside.

The embodiment of the utility model provides a circuit breaker. The circuit breaker comprises a shell, an operating mechanism and an indicating mechanism; the shell comprises an indication wall, and the indication wall is provided with an indication opening; the operating mechanism is arranged in the shell and comprises a jump buckle which can be driven to rotate in the shell; the indicating mechanism comprises a fault indicating piece, wherein the fault indicating piece is positioned between the indicating wall and the jump buckle and is rotationally connected with the shell; when the circuit protected by the circuit breaker is not failed, the jump buckle is not contacted with the fault indicator, and the fault indicator is dislocated with the indication port; when the circuit breaker trips due to the fault of the circuit, the fault indicator is driven by the trip button to rotate to be opposite to the indication port.

According to the embodiment of the utility model, the indication opening is formed in the indication wall of the shell, the fault indication piece is arranged between the indication wall and the jump button of the operating mechanism, and the fault indication piece is rotationally connected to the shell, so that the fault indication piece can not contact with the jump button when a circuit protected by the circuit breaker is not broken down and is misplaced with the indication opening, contacts with the jump button when the circuit breaker is tripped due to the fault of the circuit, is driven by the jump button to rotate to be opposite to the indication opening, and therefore, when the fault indication piece cannot be observed at the indication opening, the circuit protected by the circuit breaker can be confirmed to be not broken down, and when the fault indication piece can be observed at the indication opening, the circuit protected by the circuit breaker can be confirmed to be broken down.

In some alternative embodiments, the fault indicator is provided with a first protrusion on the side facing the trip button, and the trip button is provided with a second protrusion; when the circuit breaker trips due to the fault of the circuit, the second bulge pushes against the first bulge, so that the fault indicator rotates to be opposite to the indication port.

Through the scheme, the second bulge can push the first bulge, so that the fault indicator rotates towards the direction close to the indication port to be opposite to the indication port; in addition, when the jump button pushes against the first bulge of the fault indicator through the second bulge, the contact area between the jump button and the fault indicator can be increased, and the probability that the jump button pushes against the fault indicator to be opposite to the indication port is improved.

In some alternative embodiments, the operating mechanism further comprises a latch and a support coaxially connected to the housing, the latch and the support being sequentially rotationally engaged; a pushing table is arranged on one side of the supporting piece facing the indication port; when the circuit protected by the circuit breaker is not in fault, the pushing table pushes the first bulge along with the rotation of the supporting piece, so that the fault indicating piece and the indicating port are misplaced.

Through the scheme, the pushing table can push the first bulge to enable the fault indicator to rotate towards the direction away from the indication port so as to be misplaced with the indication port; in addition, when the first bulge of the fault indicator is pushed by the pushing table, the contact area of the supporting piece and the fault indicator can be increased, so that the fault indicator is pushed to be misplaced with the indication opening more conveniently.

In some alternative embodiments, the housing includes a retaining wall provided with a fault-retaining groove and a non-fault-retaining groove; the fault indication part comprises an indication main body and a limiting arm with a limiting protrusion, wherein the first end of the limiting arm is connected with the indication main body, a gap is reserved between the second end and the indication main body, and the limiting protrusion is arranged on one side, far away from the indication main body, of the second end; when the circuit protected by the circuit breaker is not faulty, the limiting protrusion is embedded in the non-fault limiting groove; when the circuit breaker trips due to the fault of the circuit, the limiting protrusion slides from the non-fault limiting groove to the fault limiting groove.

Through the scheme, the limiting protrusion can be embedded in the non-fault limiting groove to be limited when the circuit protected by the circuit breaker is not broken down, and is embedded in the fault limiting groove to be limited when the circuit breaker is tripped due to the fault of the circuit breaker, so that the possibility that the fault indicator is influenced by other factors (such as vibration and shaking) to rotate to other positions is reduced, and the possibility that the fault indicator is opposite to the indication port or misplaced is improved.

In some alternative embodiments, the fault locating groove is arranged at an obtuse angle between the side wall of the fault locating groove close to the non-fault locating groove and the groove bottom of the fault locating groove, and the side wall is used for guiding when the locating protrusion slides.

Through the scheme, in the process that the limiting protrusion slides from the fault limiting groove to the non-fault limiting groove, the resistance of the side wall to the limiting protrusion can be greatly reduced, and the limiting protrusion can conveniently enter the non-fault limiting groove.

In some alternative embodiments, the side of the indication body remote from the limiting arm is configured as a cambered surface, the cambered surface protruding towards the side remote from the limiting arm.

Through the scheme, the fault indicator can be contacted with the shell through the cambered surface in the rotation process of the fault indicator, the possibility of limiting the fault indicator by the shell is reduced, and the probability of the fault indicator relative to or misplacement of the indication port is improved.

In some alternative embodiments, the housing further comprises a mounting wall, one of the mounting wall and the indicating body is provided with a mounting shaft, the other one is provided with a mounting hole adapted to the mounting shaft, and the indicating body is rotatably connected to the mounting wall through the mounting shaft and the mounting hole.

Through above-mentioned scheme, instruct the main part can rotate with the mounting wall to be connected, spacing arm can be in spacing protruding slip in-process flexible deformation and unrestricted.

In some alternative embodiments, the rotational plane of the fault indicator is substantially perpendicular to the rotational plane of the trip button.

By the scheme, the fault indicator can be closer to the indication wall, so that the fault indicator can be conveniently observed from the indication port; in addition, can also be favorable to saving the inside space of casing, be convenient for the circuit breaker to realize miniaturization.

In some alternative embodiments, the indicating mechanism further comprises a closing indicator disposed on a side of the support member proximate the indication port; when the circuit protected by the circuit breaker is not in fault, when the circuit breaker is switched on, the switching-on indicating piece is opposite to the indicating port, and when the circuit breaker is switched off, the switching-on indicating piece is staggered with the indicating port.

Through the scheme, the closing indicator can rotate along with the rotation of the support piece to be opposite to the indication port when the circuit breaker is closed, so that the circuit breaker can be conveniently confirmed to be in a closing state when the indication port observes the closing indicator.

In some alternative embodiments, the indicating mechanism further comprises a brake release indicator disposed side-by-side with the brake on indicator along the direction of rotation of the support member; when the circuit protected by the circuit breaker is not faulty, when the circuit breaker is disconnected, the disconnection indicator is opposite to the indication port, and when the circuit breaker is closed, the disconnection indicator is misplaced with the indication port.

Through the scheme, the opening indicator can rotate to be opposite to the indication port along with the rotation of the support piece when the breaker is opened, so that the breaker can be conveniently confirmed to be in an opening state when the opening indicator is observed by the indication port.

The foregoing description is only an overview of the technical solutions of the embodiments of the present utility model, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present utility model can be more clearly understood, and the following specific embodiments of the present utility model are given for clarity and understanding.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a partial exploded view of an interrupt router according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of positions of a trip button, a fault indicator and an indication port when a line protected by an interrupt circuit breaker is not faulty in an embodiment of the present utility model.

Fig. 3 is a schematic diagram of positions of a trip button, a fault indicator and an indication port when the interrupt circuit breaker is tripped due to a fault of a circuit in the embodiment of the utility model.

Fig. 4 is a schematic diagram of a trip button pushing against a fault indicator when the interrupt circuit breaker is tripped due to a line fault in an embodiment of the utility model.

Fig. 5 is a schematic diagram of the pushing table pushing the fault indicator when the circuit protected by the interrupt circuit according to the embodiment of the utility model is not faulty.

Fig. 6 is a schematic view of a limiting wall and a fault indicator of a housing according to an embodiment of the present utility model.

Fig. 7 is an exploded view of the mounting wall of the housing and the fault indicator in an embodiment of the present utility model.

Fig. 8 is a schematic diagram of positions of a closing indicator and an indication port when the circuit breaker is closed, wherein the circuit breaker is not broken through a circuit protected by the circuit breaker according to the embodiment of the utility model.

Fig. 9 is a schematic diagram showing positions of a gate-opening indicator and an indication port when a circuit breaker is opened, wherein the circuit breaker is protected from faults in the embodiment of the utility model.

Reference numerals illustrate:

1. a housing; 11. an indicator wall; K. an indication port; 12. a limiting wall; 121. a fault limit groove; 122. a non-fault limiting groove; 13. a mounting wall; 131. a mounting hole; 2. an operating mechanism; 21. jumping buckle; 211. a second protrusion; 22. locking; 23. a support member; 231. a pushing table; 3. an indication mechanism; 31. a fault indicator; 311. a first protrusion; 312. an indication body; 3121. a mounting shaft; 313. a limiting arm; 3131. a limit protrusion; 32. a closing indicator; 33. and the brake-separating indicator.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The directional terms appearing in the following description are those directions shown in the drawings and do not limit the specific structure of the utility model. For example, in the description of the present utility model, the orientation or positional relationship indicated by the terms "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order, and may be used to improve one or more of these features either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two).

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and for example, the terms "connected" or "coupled" of a mechanical structure may refer to a physical connection, for example, a physical connection may be a fixed connection, a removable connection, or an integral connection. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In order to make the person skilled in the art better understand the solution of the present utility model, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

The embodiment of the utility model provides a circuit breaker. Fig. 1 is a partial exploded view of an interrupt circuit breaker according to some embodiments of the present utility model, as shown in fig. 1, the circuit breaker includes a housing 1, an operating mechanism 2, and an indicating mechanism 3; the housing 1 comprises an indicator wall 11, the indicator wall 11 having an indicator opening K; the operating mechanism 2 is arranged in the shell 1, and the operating mechanism 2 comprises a jump button 21 which can be driven to rotate in the shell 1; the indicating mechanism 3 includes a fault indicator 31, the fault indicator 31 being located between the indicating wall 11 and the trip button 21 and being rotatably connected to the housing 1. Fig. 2 is a schematic diagram showing positions of the trip button 21, the fault indicator 31 and the indication port K when the circuit protected by the circuit breaker is not faulty, and as shown in fig. 2, when the circuit protected by the circuit breaker is not faulty, the trip button 21 is not in contact with the fault indicator 31, and the fault indicator 31 is dislocated from the indication port K, and at this time, the fault indicator 31 cannot be seen from the indication port K. Fig. 3 is a schematic diagram showing positions of the trip button 21, the fault indicator 31 and the indication port K when the circuit breaker is tripped due to a fault in the circuit according to some embodiments of the utility model, as shown in fig. 3, when the circuit breaker is tripped due to a fault in the circuit, the fault indicator 31 is driven by the trip button 21 to rotate to be opposite to the indication port K, and at this time, the fault indicator 31 can be seen from the indication port K.

The housing 1 is a member for mounting the operating mechanism 2 and the indicating mechanism 3, and a mounting cavity may be provided in the housing 1 to mount the operating mechanism 2 and the indicating mechanism 3. After the operating mechanism 2 and the indicating mechanism 3 are mounted on the housing 1, the housing 1 can isolate the operating mechanism 2 and the indicating mechanism 3 from external components, and the possibility that the operating mechanism 2 and the indicating mechanism 3 are damaged due to the influence of the external components is reduced.

The operating mechanism 2 is a mechanism for forcing a moving contact of the circuit breaker to contact with or separate from a fixed contact. Specifically, referring to fig. 1, the operating mechanism 2 may include a trip button 21, a latch 22 and a supporting member 23 that are sequentially in a rotating fit, where the trip button 21 may be driven by a handle in the circuit breaker to rotate, and when rotating, the latch 22 is driven to rotate, and when rotating, the latch 22 may drive the moving contact to contact with or separate from the fixed contact. It should be noted that, the connection manner among the jump button 21, the lock catch 22 and the supporting member 23 is the same as that in the conventional circuit breaker, and the connection manner (coaxial connection to the housing 1) of the lock catch 22, the supporting member 23 and the housing 1 is also the same as that in the conventional circuit breaker, and the utility model is not repeated here.

The indicating means 3 is a means for indicating the state of the line protected by the circuit breaker. The line protected by the circuit breaker may include a non-fault state and a fault state; when the circuit is in a non-fault state, the circuit breaker can be in a switching-off state and a switching-on state, wherein the switching-off state refers to a state that the moving contact is driven by the operating mechanism 2 and is separated from the fixed contact, and the switching-on state refers to a state that the moving contact is driven by the operating mechanism 2 and is contacted with the fixed contact; the circuit in a fault state means that a short circuit or overload occurs in the circuit, and at this time, the moving contact is separated from the fixed contact by the short circuit or overload, so that the circuit breaker also assumes a breaking state (i.e., a tripped state).

Based on the above statement, when the circuit protected by the circuit breaker is not faulty, the circuit breaker is driven by the operating mechanism 2 to be in a switching-on or switching-off state, and the operating mechanism 2 is driven by the handle, so that the switching-off state and the switching-on state of the circuit breaker can be directly judged by judging the position of the handle. However, based on the above statement, it is also found that when the circuit breaker is in fault, the circuit breaker assumes a breaking state (tripped state) due to the fault of the circuit, that is, when in fault, the handle can be reversely driven by the operating mechanism 2 to be in the same position as the breaking state, so that the judgment of the specific state of the protected circuit cannot be achieved only by the position of the handle. In addition, when the circuit protected by the circuit breaker fails, in general, since the trip button 21 is in a free state, that is, the handle is in a freely movable state, after the handle is moved, the handle may be in the same position as the above-mentioned closing state, and thus, the judgment of the specific state of the circuit protected still cannot be achieved only by the position of the handle.

Based on this, in the embodiment of the present utility model, the indication mechanism 3 is configured to include the fault indicator 31 by providing the indication port K on the housing 1, so that the fault indicator 31 can cooperate with the indication port K to indicate the specific state of the line protected by the circuit breaker. Specifically, by providing the indication port K on the indication wall 11 of the housing 1, disposing the fault indicator 31 between the indication wall 11 and the trip button 21 of the operating mechanism 2, and rotationally connecting the fault indicator 31 to the housing 1, the fault indicator 31 can be dislocated from the indication port K without contacting the trip button 21 when the circuit breaker is tripped due to a fault, and can be rotated to be opposite to the indication port K by being driven by the trip button 21, so that when the fault indicator 31 cannot be observed at the indication port K, the fault of the circuit breaker can be confirmed, and when the fault indicator 31 can be observed at the indication port K, the fault of the circuit breaker can be confirmed.

In order to facilitate confirmation that the component observed at the indication port K is the fault indicator 31, the fault indicator 31 may be provided differently from other components. Illustratively, the color of the fault indicator 31 may be set to be different from the color of the other components, for example, the fault indicator 31 may be set to be yellow, and the color of the other components may be set to be other colors than yellow, so that when yellow is observed at the indication port K, a line fault protected by the circuit breaker may be confirmed, otherwise, it is confirmed that the line protected by the circuit breaker is not faulty; alternatively, a different shape of the mark may be provided on the side of the fault indicator 31 facing the indication wall 11, for example, a circular mark may be provided on the side of the fault indicator 31 facing the indication wall 11, and marks of other shapes than circular may be provided on other parts, so that when the circular mark is observed at the indication port K, a fault of the line protected by the circuit breaker may be confirmed, and otherwise, a fault of the line protected by the circuit breaker may be confirmed.

It should be noted that, when the trip button 21 rotates to drive the fault indicator 31 to rotate to face the indication port K, the rotation surface of the fault indicator 31 may be disposed coplanar or parallel to the rotation surface of the trip button 21, the rotation surface of the fault indicator 31 may be disposed at an acute angle or an obtuse angle with the rotation surface of the trip button 21, and the rotation surface of the fault indicator 31 may be disposed perpendicular to the rotation surface of the trip button 21. The rotating surface of the fault indicator 31 and the rotating surface of the trip button 21 are perpendicular to each other, and are relatively coplanar, parallel, and have an acute angle or an obtuse angle, so that the fault indicator 31 can be closer to the indication wall 11, the fault indicator 31 can be conveniently observed from the indication port K, the space inside the casing 1 can be conveniently saved, and the miniaturization of the circuit breaker is realized.

Further, fig. 4 is a schematic diagram of the trip button 21 pushing against the fault indicator 31 when the interrupt circuit breaker is tripped due to a line fault according to some embodiments of the present utility model, as shown in fig. 4, a first protrusion 311 is provided on a side of the fault indicator 31 facing the trip button 21, and a second protrusion 211 is provided on the trip button 21; when the circuit breaker trips due to a line fault, the second protrusion 211 pushes the first protrusion 311, so that the fault indicator 31 rotates to be opposite to the indication port K.

Based on the foregoing, since the surface of the jump button 21 facing the fault indicator 31 is generally configured as an arc surface, if the first protrusion 311 and the second protrusion 211 are not configured in the process of pushing the fault indicator 31 by the jump button 21, the arc surface of the jump button 21 and the surface of the fault indicator 31 facing the jump button 21 are in line contact, so that the contact area of the two is small, and further the force applied by the jump button 21 to the fault indicator 31 is small, so that the jump button 21 cannot push the fault indicator 31 to be opposite to the indication port K.

Based on this, in this embodiment, by providing the first protrusion 311 on the side of the fault indicator 31 facing the trip button 21 and providing the second protrusion 211 on the trip button 21, in the process of pushing the fault indicator 31 by the trip button 21, the surface of the second protrusion 211 close to the first protrusion 311 may contact with the surface of the first protrusion close to the second protrusion 211, so as to increase the contact area between the fault indicator 31 and the trip button 21, increase the force applied by the trip button 21 to the fault indicator 31, and increase the probability that the fault indicator 31 is pushed by the trip button 21 to be opposite to the indication port K.

The first protrusion 311 may be integrally provided with the fault indicator 31 when the fault indicator 31 faces the side of the trip button 21, or may be connected to the fault indicator 31 through a connection structure; when the first protrusion 311 is connected to the fault indicator 31 through the connection structure, the connection structure may be exemplarily provided as a notch of a side of the fault indicator 31 facing the trip button 21, the shape of the notch may be adapted to the shape of the first protrusion 311, and the first protrusion 311 may be interference-connected to the fault indicator 31 by being inserted into the notch. The manner in which the second protrusion 211 is disposed on the trip button 21 may be the same as the manner in which the first protrusion 311 is disposed on the fault indicator 31, which will not be described herein.

In this embodiment, the position of the second protrusion 211 on the latch 21 may be set according to the driven position of the latch 21. For example, in a normal case, when the jump button 21 is driven by the handle, the jump button 21 is driven by a U-shaped connecting rod with one end connected to the handle and the other end connected to the jump button 21, and when the jump button 21 is driven by the lock catch 22, the jump button 21 is driven by a matching part of the two, and the position of the U-shaped connecting rod connected to the jump button 21 is close to the matching part of the jump button 21 and the lock catch 22; based on this, the connection line between the setting position of the jump button 21 and the rotation axis of the jump button 21 and the connection line between the connection position of the other end of the U-shaped link on the jump button 21 (or the matching position of the jump button 21 and the lock button 22) and the rotation axis of the jump button 21 can be collinear, and symmetrically distributed on both sides of the rotation axis of the jump button 21, so that the probability that the jump button 21 is not contacted with the fault indicator 31 when the circuit protected by the circuit breaker is not faulty and pushes against the fault indicator 31 when the circuit protected by the circuit breaker is faulty can be improved. This is because, if the second protrusion 211 is disposed on the trip button 21 too close to the fault indicator 31, the circuit protected by the circuit breaker is not broken, and when the circuit breaker is disconnected, the second protrusion 211 may push the first protrusion 311, so that the fault indicator 31 is opposite to the indication port K; conversely, if the second protrusion 211 is located at a large distance from the fault indicator 31 to the setting point on the trip button 21, the second protrusion 211 may not be able to push against the first protrusion 311 when the circuit breaker is tripped due to a fault of the protected line, that is, the fault indicator 31 may be always dislocated from the indication port K.

Further, fig. 5 is a schematic diagram of the pushing table 231 pushing the fault indicator 31 when the circuit protected by the interrupt circuit breaker is not faulty according to some embodiments of the present utility model, as shown in fig. 5, the supporting member 23 is provided with the pushing table 231 on the side facing the indication port K; when the circuit protected by the circuit breaker is not broken, the pushing platform 231 pushes the first protrusion 311 along with the rotation of the supporting member 23, so that the fault indicator 31 is dislocated from the indication port K.

Based on the above description, when the circuit breaker is tripped due to a line failure, the failure indicator 31 faces the indication port K by the driving of the trip button 21, and similarly, when the line protected by the circuit breaker is not failed, it is necessary to drive the failure indicator 31 by another member so as to be displaced from the indication port K.

Based on this, the present embodiment makes the fault indicator 31 rotate in a direction away from the indication port K to be dislocated with the indication port K by the abutment 231 provided on the support 23 such that the abutment 231 can abut against the first projection 311 with the rotation of the support 23.

It should be noted that, along the rotation direction of the fault indicator 31, the pushing platform 231 and the trip buckle 21 may be distributed on two sides of the first protrusion 311, so that when the circuit protected by the circuit breaker is not faulty, the pushing platform 231 may rotate towards the direction close to the second protrusion 211 to push the first protrusion 311, so that the first protrusion 311 is close to the second protrusion 211, and the fault indicator 31 and the indication port K are dislocated; when the circuit breaker trips due to a line fault, the second protrusion 211 can rotate towards the direction approaching the pushing table 231 to push the first protrusion 311, so that the first protrusion 311 approaches the pushing table 231, and the fault indicator 31 is opposite to the indication port K.

According to other embodiments of the present utility model, based on the foregoing embodiments, fig. 6 is a schematic diagram of the limiting wall 12 of the housing 1 and the fault indicator 31 according to some embodiments of the present utility model, and as shown in fig. 6, the housing 1 includes the limiting wall 12 provided with the fault limiting groove 121 and the non-fault limiting groove 122; the fault indicator 31 includes an indication body 312 and a limiting arm 313 having a limiting protrusion 3131, wherein a first end of the limiting arm 313 is connected to the indication body 312, a gap is formed between a second end and the indication body 312, and the limiting protrusion 3131 is disposed at a side of the second end away from the indication body 312. When the circuit protected by the circuit breaker is not faulty, the limiting protrusion 3131 is embedded in the non-fault limiting groove 122; when the circuit breaker trips due to a line fault, the limit protrusion 3131 slides from the non-fault limit groove 122 to the fault limit groove 121.

The stopper wall 12 is a structure for stopping the fault indicator 31. Based on the foregoing, the fault indicator 31 has two positions, namely, a position opposite to the indication port K and a position dislocated from the indication port K, when the fault indicator 31 is located at the two positions, if the fault indicator 31 is not limited, the fault indicator 31 may be rotated to other positions under the influence of other factors (such as vibration and shake), so as to influence the indication of the circuit condition protected by the circuit breaker.

Based on this, in the present embodiment, by providing the fault limit groove 121 and the non-fault limit groove 122 on the limit wall 12 of the housing 1 and providing the fault indicator 31 to include the indication body 312 and the limit arm 313 having the limit protrusion 3131, the limit protrusion 3131 can be embedded in the non-fault limit groove 122 to be limited when the circuit protected by the circuit breaker is not faulty, and embedded in the fault limit groove 121 to be limited when the circuit breaker is tripped due to the circuit fault, so that the possibility that the fault indicator 31 is rotated to other positions under the influence of other factors (such as vibration and shake) is reduced, and the reliability of the circuit state indication protected by the circuit breaker is improved.

It should be noted that, along the rotation direction of the fault indicator 31, the fault-limiting groove 121 and the non-fault-limiting groove 122 may be disposed adjacent to each other, and the fault-limiting groove 121 may be close to the indication port K, and the non-fault-limiting groove 122 may be far away from the indication port K.

It should be further noted that the limiting arm 313 may be disposed on a side of the indication body 312 near the limiting wall 12, so that the limiting protrusion 3131 is matched with the fault-limiting groove 121 or the non-fault-limiting groove 122. In addition, the stop arm 313 may be configured in a generally arcuate configuration to reduce the likelihood of interference of the stop arm 313 with other components during rotation of the fault indicator 31. Further, the first end of the limiting arm 313 may be connected to the indication body 312, a gap is formed between the second end and the indication body 312, and the limiting protrusion 3131 is disposed on a side of the second end away from the indication body 312, so that as the limiting protrusion 3131 slides from the non-fault limiting groove 122 to the fault limiting groove 121, the limiting arm 313 may be stressed and deformed toward a side close to the indication body 312, so as to reduce the possibility of stress damage of the limiting arm 313.

Further, with continued reference to fig. 6, the side wall of the fault location groove 121, which is close to the non-fault location groove 122, is disposed at an obtuse angle with respect to the groove bottom of the fault location groove 121, and the side wall is used for guiding when the location protrusion 3131 slides.

Based on the foregoing statement, when the circuit breaker trips due to a line failure, the limit protrusion 3131 slides from the non-failure limit groove 122 to the failure limit groove 121, and when the line protected by the circuit breaker does not fail, the limit protrusion 3131 slides from the failure limit groove 121 to the non-failure limit groove 122; in the process that the limit protrusion 3131 slides from the fault location groove 121 to the non-fault location groove 122, the limit protrusion 3131 needs to slide into the non-fault location groove 122 along the side wall of the fault location groove 121 near the non-fault location groove 122. Based on this, if the fault location groove 121 is disposed close to the side wall of the non-fault location groove 122 and is disposed at a right angle or an acute angle with respect to the groove bottom of the fault location groove 121, the side wall may limit the location protrusion 3131 during the sliding process of the location protrusion 3131, so that the location protrusion 3131 cannot enter the non-fault location groove 122.

Therefore, when the fault limit groove 121 is disposed close to the side wall of the non-fault limit groove 122 and forms an obtuse angle with the groove bottom of the fault limit groove 121, the resistance of the side wall to the limit protrusion 3131 can be reduced, so that the limit protrusion 3131 can exit the fault limit groove 121 and enter the non-fault limit groove 122.

Further, the side surface of the indicating body 312 away from the limiting arm 313 is configured as an arc surface, which protrudes toward the side away from the limiting arm 313.

If the side surface of the indicating body 312 on the side away from the limiting arm 313 is configured as another type of surface (e.g., a serrated surface, a flat surface) on the premise that the fault indicator 31 is opposite to or displaced from the indication port K based on rotation, then the edge of the side surface or the edge between the side surface and the adjacent surface may abut against the housing 1 during rotation of the indicating body 312, so that the housing 1 limits the fault indicator 31, affecting the opposite or displacement of the fault indicator 31 from the indication port K.

Therefore, in the present embodiment, by configuring the side surface of the side of the indication body 312 away from the limiting arm 313 to be a cambered surface protruding toward the side away from the limiting arm 313, the side surface can be brought into contact with the housing 1 through the cambered surface, the possibility of limiting the fault indicator 31 by the housing 1 is reduced, and the probability of the fault indicator 31 being opposed to or dislocated from the indication port K is improved.

According to other embodiments of the present utility model, when the fault indicator 31 is rotatably connected to the housing 1, as shown in fig. 7, the housing 1 further includes a mounting wall 13, one of the mounting wall 13 and the indication body 312 is provided with a mounting shaft 3121, and the other is provided with a mounting hole 131 adapted to the mounting shaft 3121, and the indication body 312 is rotatably connected to the mounting wall 13 through the mounting shaft 3121 and the mounting hole 131, by way of example.

The mounting wall 13 is the main wall of the housing 1 for mounting the fault indicator 31. Based on the foregoing, the fault indicator 31 is disposed between the indicator wall 11 and the trip button 21, and thus the mounting wall 13 may be located between the indicator wall 11 and the wall for mounting the support 23 and the catch 22. Further, while the rotation surface of the fault indicator 31 may be substantially perpendicular to the rotation surface of the trip button 21, the mounting wall 13 may be disposed substantially perpendicular to the wall of the housing 1 for mounting the support 23 and the latch 22.

The mounting shaft 3121 and the mounting hole 131 are structures for cooperating to rotationally connect the fault indicator 31 to the mounting wall 13; wherein, the mounting shaft 3121 may be provided to the mounting wall 13, the mounting hole 131 may be provided to the fault indicator 31, or the mounting shaft 3121 may be provided to the fault indicator 31, and the mounting hole 131 may be provided to the mounting wall 13, which is not particularly limited in the present utility model.

When the fault indicator 31 is provided with the mounting hole 131 or the mounting shaft 3121, the fault indicator 31 may be provided at the indication body 312 of the fault indicator 31 to improve the reliability of the rotational connection of the fault indicator 31 with the mounting wall 13 and facilitate the deformation of the limiting arm 313. This is because, based on the foregoing, in the course of switching the spacing protrusion 3131 between the non-failure spacing groove 122 and the failure spacing groove 121, the spacing arm 313 may be deformed to approach the indication body 312, and based on this, if the mounting hole 131 or the mounting shaft 3121 is provided to the spacing arm 313, the deformation of the spacing arm 313 may be affected, and the reliability of the rotational connection of the failure indication member 31 with the mounting wall 13 may be reduced.

It should be emphasized that, in the present embodiment, when one of the mounting wall 13 and the indication body 312 is provided with the mounting shaft 3121, the other may also be provided with a mounting groove adapted to the mounting shaft 3121; the notch of the mounting groove may be oriented in the same direction as the axis of the mounting shaft 3121 or may be perpendicular to the axis of the mounting shaft 3121. When the mounting groove is perpendicular to the axial direction of the mounting shaft 3121, the mounting groove may extend from one side of the mounting wall 13 toward the inside of the mounting wall 13, or from one side of the fault indicator 31 toward the inside of the fault indicator 31, wherein the side refers to a surface parallel to the mounting shaft 3121, so that the mounting shaft 3121 may enter the inside of the mounting groove from the side of the mounting wall 13 or the fault indicator 31 to facilitate connection of the fault indicator 31 with the mounting wall 13.

When the mounting groove is perpendicular to the axial direction of the mounting shaft 3121, the notch size of the mounting groove may be set to be slightly smaller than the in-groove size to reduce the possibility of the mounting shaft 3121 coming out of the mounting groove and to improve the reliability of the rotational connection of the fault indicator 31 with the mounting wall 13.

Further, based on the foregoing statement, the circuit breaker includes a breaking state and a closing state when the circuit breaker is in the non-fault state, so that the embodiment of the present utility model further provides other indicators to indicate the breaking state and the closing state of the circuit breaker when the circuit breaker is in the non-fault state. In order to facilitate understanding of the indication of the opening state and the closing state by other indication means, an exemplary description is made below.

In some embodiments, when indicating the closing state of the circuit breaker, as shown in fig. 8, the indicating mechanism 3 further includes a closing indicator 32 disposed on a side of the support 23 near the indication port K; when the circuit protected by the circuit breaker is not in fault, the switch-on indicator 32 is opposite to the indication port K when the circuit breaker is switched on, and the switch-on indicator 32 is dislocated from the indication port K when the circuit breaker is switched off.

The closing indicator 32 is a member for indicating a closing state of the circuit breaker when the line protected by the circuit breaker is not broken. In general, since the overall size of the trip button 21 is small and the fault indicator 31 needs to be pushed when the circuit breaker trips due to a line fault, and further, since the distance between the lock catch 22 and the indication wall 11 is long, it is inconvenient to observe at the indication port K, the closing indicator 32 may be disposed on the side of the support 23 near the indication wall 11, so that the closing indicator 32 may be disposed near the indication port K to be observed. Further, during the closing process of the circuit breaker, the handle, the trip button 21, the lock catch 22 and the supporting member 23 are sequentially driven to rotate, so that the closing indicator 32 can rotate along with the rotation of the supporting member 23 to be opposite to or dislocated from the indication port K, so as to judge whether the circuit breaker is in a closing state according to whether the indication port K is opposite to the closing indicator 32.

There are various ways in which the closing indicator 32 is provided on the side of the support 23 near the indicator wall 11. For example, in some arrangements, a fitting groove may be provided on the side of the support member 23 adjacent to the indication wall 11, and the closing indicator 32 may be fitted into the fitting groove; in other arrangements, the side of the support 23 adjacent the indicator wall 11 may be provided with an adhesive and the closing indicator 32 may be adhered to the support 23.

In the present embodiment, in order to facilitate confirmation that the component observed at the indication port K is the closing indicator 32, the closing indicator 32 may be provided differently from other components. For example, the color of the closing indicator 32 may be set to be different from that of other components, for example, the closing indicator 32 may be set to be red, and other components may be set to be other colors than red, so that it is possible to determine whether the circuit breaker is in the closing state by determining whether the color observed at the indication port K portion is red, and confirm that the circuit breaker is in the closing state when red is observed; alternatively, a different mark may be provided on the side of the closing indicator 32 facing the indication wall 11, for example, a square mark may be provided on the side of the closing indicator 32 facing the indication wall 11, and other marks other than the square mark may be provided on the other parts, so that it is possible to determine whether the circuit breaker is in the closing state by determining whether the mark observed at the indication port K is a square mark, and confirm that the circuit breaker is in the closing state when the square mark is observed.

In other embodiments, when indicating the open state of the circuit breaker, as shown in fig. 9, the indicating mechanism 3 further includes an open indicator 33 disposed along the rotation direction of the support member 23 and side by side with the closing indicator 32, when the circuit protected by the circuit breaker is not broken, the open indicator 33 is opposite to the indication port K and when the circuit breaker is closed, the open indicator 33 is dislocated from the indication port K.

The opening indicator 33 is a member for indicating the opening state of the circuit breaker when the line protected by the circuit breaker is not broken. During specific indication, the opening indicator 33 may also be disposed on a side of the support member 23 near the indication wall 11, so that the opening indicator 33 may rotate along with rotation of the support member 23 to be opposite to or dislocated from the indication port K, so as to determine whether the circuit breaker is in the opening state according to whether the indication port K is opposite to the opening indicator 33.

It should be noted that, the manner in which the opening indicator 33 is disposed on the side of the support member 23 near the indication wall 11 may be the same as the manner in which the closing indicator 32 is disposed on the support member 23, which is not described herein.

In the present embodiment, in order to facilitate confirmation that the component observed at the indication port K is the brake-off indicator 33, the brake-off indicator 33 may be provided differently from other components. For example, the color of the opening indicator 33 may be set to be different from that of other components, for example, the closing indicator 32 may be set to be green, and the other components may be set to be other colors than green, so that it is possible to determine whether the circuit breaker is in the opening state by determining whether the color observed at the indication port K portion is green, and confirm that the circuit breaker is in the opening state when green is observed; alternatively, a different mark may be provided on the side of the opening indicator 33 facing the indication wall 11, for example, a triangular mark may be provided on the side of the closing indicator 32 facing the indication wall 11, and other marks other than the triangular mark may be provided on the other members, so that it is possible to determine whether the circuit breaker is in the opening state by determining whether the mark observed at the indication port K is a triangular mark, and confirm that the circuit breaker is in the opening state when the triangular mark is observed.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A circuit breaker, comprising:

a housing including an indicator wall having an indicator port;

the operating mechanism is arranged in the shell and comprises a jump buckle capable of being driven to rotate in the shell;

the indicating mechanism comprises a fault indicating piece, wherein the fault indicating piece is positioned between the indicating wall and the jump buckle and is rotationally connected with the shell; when the circuit protected by the circuit breaker is not faulty, the jump buckle is not contacted with the fault indicator, and the fault indicator is dislocated with the indication port; when the circuit breaker trips due to the fault of the circuit, the fault indicator is driven by the trip buckle to rotate to be opposite to the indication port.

2. The circuit breaker of claim 1, wherein a side of the fault indicator facing the trip button is provided with a first protrusion and the trip button is provided with a second protrusion; when the circuit breaker trips due to the fault of the circuit, the second bulge pushes against the first bulge, so that the fault indicator rotates to be opposite to the indication port.

3. The circuit breaker of claim 2, wherein the operating mechanism further comprises a latch and a support coaxially connected to the housing, the latch and the support being sequentially rotationally engaged; a pushing table is arranged on one side of the supporting piece, facing the indication port; when the circuit protected by the circuit breaker is not in fault, the pushing table pushes the first protrusion along with the rotation of the supporting piece, so that the fault indication piece and the indication opening are misplaced.

4. The circuit breaker of claim 3, wherein the housing includes a limit wall provided with a fault limit slot and a non-fault limit slot; the fault indicator comprises an indication main body and a limiting arm with a limiting protrusion, wherein a first end of the limiting arm is connected with the indication main body, a gap is reserved between a second end of the limiting arm and the indication main body, and the limiting protrusion is arranged on one side, far away from the indication main body, of the second end;

when the circuit protected by the circuit breaker is not faulty, the limiting protrusion is embedded in the non-fault limiting groove; when the circuit breaker trips due to the fault of the circuit, the limiting protrusion slides from the non-fault limiting groove to the fault limiting groove.

5. The circuit breaker of claim 4, wherein the fault-restricting groove is disposed at an obtuse angle between a sidewall of the fault-restricting groove adjacent to the non-fault-restricting groove and a groove bottom of the fault-restricting groove.

6. The circuit breaker of claim 4, wherein a side of the indicating body remote from the limit arm is configured as a cambered surface that protrudes toward the side remote from the limit arm.

7. The circuit breaker of claim 4, wherein the housing further comprises a mounting wall, one of the mounting wall and the indicating body is provided with a mounting shaft, the other is provided with a mounting hole adapted to the mounting shaft, and the indicating body is rotatably connected to the mounting wall through the mounting shaft and the mounting hole.

8. The circuit breaker of claim 1, wherein a rotational surface of the fault indicator is substantially perpendicular to a rotational surface of the trip button.

9. The circuit breaker of claim 3, wherein the indicating mechanism further comprises a closing indicator disposed on a side of the support member proximate the indication port; when the circuit protected by the circuit breaker is not broken, the closing indicator is opposite to the indication port when the circuit breaker is closed, and is dislocated with the indication port when the circuit breaker is opened.

10. The circuit breaker of claim 9, wherein the indicating mechanism further comprises a break indicator disposed side-by-side with the close indicator along a rotational direction of the support member; when the circuit protected by the circuit breaker is not broken, the opening indicator is opposite to the indication port when the circuit breaker is opened, and the opening indicator is dislocated from the indication port when the circuit breaker is closed.