CN221149917U - Circuit breaker - Google Patents

Abstract

The utility model belongs to the technical field of piezoelectric devices, and discloses a circuit breaker. The circuit breaker comprises a shell, wherein the shell comprises a base and a middle cover, the middle cover is covered on the base, and a guide groove is formed in the bottom wall of the middle cover; the rotating shaft is rotatably arranged in the base; the indicating device comprises a bracket and an indicating piece rotatably arranged on the bracket, the bracket is arranged in the middle cover, and the bracket is provided with an avoidance hole; the first end of push rod with the eccentric department sliding connection of pivot, the second end of push rod slides wears to establish the guide way and dodges the hole, the push rod is configured as: when the rotating shaft is rotated, the first end of the push rod slides relative to the rotating shaft, the main body part of the push rod slides in the guide groove, and the second end of the push rod can push the indicating piece to rotate so as to indicate the state of the circuit breaker. The utility model reduces the number of parts, simplifies assembly and is beneficial to mass production of the circuit breaker.

Description

Circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage electricity, in particular to a circuit breaker.

Background

The circuit breaker is a common switching element, which not only has the function of controlling the on-off of a normal circuit, but also provides a protection function when the system fails.

In the prior art, in patent application number CN202120646344.5, the name is a circuit breaker: a rotary indicator is arranged in a shell of the indicating device, and one end of a guide rod stretches into the shell and pushes the rotary indicator to indicate the opening and closing state. The side wall of the shell is provided with a guide groove, a guide shaft is arranged on the guide rod, and the guide rod is ensured to move up and down along the vertical direction by sliding along the guide groove of the shell through the guide shaft. However, by additionally arranging the guide shaft and the guide groove, the existing circuit breaker is easy to increase in parts and complex in internal structure, and mass production of the circuit breaker is not facilitated.

Disclosure of utility model

The utility model aims to provide a circuit breaker, which reduces the number of parts used, simplifies assembly and is beneficial to mass production of the circuit breaker.

To achieve the purpose, the utility model adopts the following technical scheme:

A circuit breaker, comprising:

The shell comprises a base and a middle cover, wherein the middle cover is covered on the base, and a guide groove is formed in the bottom wall of the middle cover;

The rotating shaft is rotatably arranged in the base;

the indicating device comprises a bracket and an indicating piece rotatably arranged on the bracket, the bracket is arranged in the middle cover, and the bracket is provided with an avoidance hole;

The first end of push rod with the eccentric department sliding connection of pivot, the second end of push rod slides and wears to establish the guide way with dodge the hole, the push rod is configured to: when the rotating shaft is rotated, the first end of the push rod slides relative to the rotating shaft, the main body part of the push rod slides in the guide groove, and the other end of the push rod can push the indicating piece to rotate so as to indicate the state of the circuit breaker.

As an alternative of the circuit breaker, the cross section of one end of the push rod and the guide groove are square.

As an alternative scheme of the circuit breaker, the side wall of the rotating shaft is concavely provided with an eccentric chute, the first end of the push rod is provided with a bulge, and the bulge is slidingly arranged in the eccentric chute; the circuit breaker is characterized in that a limiting surface is arranged on the rotating shaft, a limiting part is arranged at the first end of the push rod, and the limiting part can be abutted to the limiting surface when the circuit breaker is in a breaking state.

As an alternative scheme of the circuit breaker, a first connecting hole is formed in the support, a second connecting hole is formed in the bottom wall of the middle cover, and a fastener penetrates through the first connecting hole and is connected with the second connecting hole.

As an alternative of the circuit breaker, an elastic member is disposed between the bracket and the indicator, and no force is applied to the indicator at the second end of the push rod, and the elastic member is configured to rotate the indicator to indicate a closing state.

As an alternative scheme of the circuit breaker, a fixed shaft is arranged on the bracket, the indicating piece is provided with a round hole, and the indicating piece is sleeved on the fixed shaft through the round hole;

The elastic piece is a torsion spring, the spiral section of the torsion spring is sleeved on the fixed shaft, one end of the torsion spring is abutted to the support, and the other end of the torsion spring is abutted to the indicating piece.

As an alternative of the circuit breaker, a stop surface is arranged on the indicator, and the stop surface can be abutted with the spring piece of the micro switch.

As an alternative scheme of the circuit breaker, the inner side wall of the middle cover is provided with a baffle, and the micro switch is positioned between the baffle and the side wall of the bracket.

As an alternative scheme of the circuit breaker, the shell further comprises an upper cover covered on the middle cover, the upper cover is provided with a display window, the arc-shaped edge of the indicator is provided with a closing indicator surface and a separating brake or tripping indicator surface, and the closing indicator surface and the separating brake or tripping indicator surface can be selectively opposite to the display window.

Compared with the prior art, the utility model has the beneficial effects that:

According to the circuit breaker provided by the utility model, the guide groove is formed in the middle cover of the shell, the bracket of the indicating device is arranged on the middle cover, the avoidance hole on the bracket and the guide groove on the middle cover are correspondingly arranged up and down, the rotating shaft of the movable contact system is rotatably arranged in the base, the first end of the push rod is slidably connected with the eccentric part of the rotating shaft, the second end of the push rod is slidably penetrated through the guide groove and the avoidance hole of the middle cover, the push rod can slide by rotating the rotating shaft, the second end of the push rod can extend out of the avoidance hole and then push the indicating piece, and the indicating piece rotates and indicates the state of the circuit breaker. According to the utility model, the guide groove for the push rod to slide up and down is directly arranged on the middle cover, one end of the push rod is in sliding connection with the rotating shaft, corresponding guide parts are not required to be arranged on the push rod and the indicating device, the number of parts is reduced, assembly is simplified, and batch production of the circuit breaker is facilitated.

Drawings

Fig. 1 is a first perspective assembled schematic view of a circuit breaker according to an embodiment of the present utility model (the base and upper cover are not shown);

Fig. 2 is a second perspective assembled schematic view of the circuit breaker of the embodiment of the present utility model (the base and upper cover are not shown);

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a first perspective assembled schematic view of a circuit breaker according to an embodiment of the present utility model (the base and upper cover are not shown);

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is a first perspective assembled view of the shaft, push rod and indicating device of an embodiment of the present utility model;

FIG. 7 is an exploded view of the shaft, push rod and indicating device of an embodiment of the present utility model;

FIG. 8 is a schematic view of an embodiment of an indication device;

FIG. 9 is a second perspective assembled view of the shaft, push rod and indicating device of an embodiment of the present utility model;

FIG. 10 is an enlarged view of a portion of FIG. 9 at C;

Fig. 11 is a schematic diagram of an indicating device in a tripped or open state according to an embodiment of the utility model.

In the figure:

1. A middle cover; 2. a rotating shaft; 3. an indication device; 4. a push rod;

11. A guide groove; 12. a second connection hole; 13. a baffle; 14. a boss;

21. An eccentric chute; 22. a limiting surface;

31. A bracket; 311. avoidance holes; 312. a first connection hole; 313. a jack; 32. an indicator; 321. a slip plane; 322. a round hole; 323. a stop surface; 324. a closing indication surface; 325. a brake-off or trip indication surface; 33. a fixed shaft; 34. an elastic member; 35. a micro-switch; 351. a spring plate;

41. a protrusion; 42. and a limiting part.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. 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 the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

In order to reduce the number of parts used, simplify assembly, and facilitate mass production of the circuit breaker, the present embodiment provides a circuit breaker, and details of the present embodiment are described in detail below with reference to fig. 1 to 11.

In the present embodiment, as shown in fig. 1 to 7, the circuit breaker includes a housing, a rotary shaft 2, an indicating device 3, and a push rod 4. Wherein the shell includes base, well lid 1 and upper cover, and well lid 1 cover is located on the base, and on the upper cover was located well lid 1, the diapire of well lid 1 was equipped with guide way 11, and the upper cover is provided with the display window. The rotating shaft 2 is rotatably arranged in the base. Illustratively, in this embodiment the rotor 2 is provided with a moving contact assembly of the circuit breaker.

As shown in fig. 7 in combination with fig. 8, the indicating device 3 includes a bracket 31 and an indicating member 32 rotatably provided to the bracket 31. As shown in fig. 3 and fig. 5, the bracket 31 is provided with a avoiding hole 311, the bracket 31 is installed in the middle cover 1, and the indicator 32 is opposite to the display window of the upper cover, so as to display the opening, closing or releasing state. The first end of push rod 4 and the eccentric department sliding connection of pivot 2, the guide way 11 on the middle cover 1 is worn to establish in the second end slip of push rod 4, and push rod 4 can stretch out through the rotation of pivot 2 and dodge hole 311 and the slip face 321 butt of indicator 32. The push rod 4 is configured to: when the rotating shaft 2 is rotated, the first end of the push rod 4 slides relative to the rotating shaft, the main body part of the push rod 4 slides in the guide groove 11, and the other end of the push rod 4 can push the indicator 32 to rotate so as to indicate the state of the circuit breaker.

In short, in the circuit breaker provided in this embodiment, the guide groove 11 is provided on the middle cover 1 of the housing, the bracket 31 of the indicating device 3 is installed on the middle cover 1, the avoidance hole 311 on the bracket 31 and the guide groove 11 on the middle cover 1 are correspondingly arranged up and down, the rotating shaft 2 of the movable contact system is rotatably arranged in the base, the first end of the push rod 4 is slidably connected with the eccentric position of the rotating shaft 2, the second end of the push rod 4 is slidably arranged through the guide groove 11 and the avoidance hole 311 of the middle cover 1, and the push rod 4 can extend out of the avoidance hole 311 and then be abutted against the sliding surface 321 of the indicating piece 32 by rotating the rotating shaft 2, so that the swinging of the indicating piece 32 is realized, and then the indication of the closing state and the opening or releasing state of the circuit breaker is realized. In this embodiment, the guide groove 11 for the push rod 4 to slide up and down is directly arranged on the middle cover 1, one end of the push rod 4 is in sliding connection with the rotating shaft, corresponding guide parts are not required to be arranged on the push rod 4 and the indicating device 3, the number of parts is reduced, assembly is simplified, and batch production of the circuit breaker is facilitated.

In this embodiment, as shown in fig. 4 and 5, the upper end of the push rod 4 is square, and the guide groove 11 of the middle cover 1 is also square, so that the push rod 4 can only move up and down relative to the guide groove 11, and the push rod 4 is prevented from rotating relative to the guide groove 11 in the process of moving up and down.

As shown in fig. 7, the housing further includes an upper cover covering the middle cover 1, the upper cover is provided with a display window, the arc edge of the indicator 32 is provided with a closing indicator surface 324 and a opening or tripping indicator surface 325, and the closing indicator surface 324 and the opening or tripping indicator surface 325 can be selectively opposite to the display window. Pushing the indicator 32 to swing relative to the bracket 31 by the push rod 4, as shown in fig. 6, when the indicator 32 swings to the closing indication surface 324 to correspond to the display window of the circuit breaker, the circuit breaker is indicated to be in a closing state; as shown in fig. 11, swinging to the open or tripped indicating surface 325 corresponds to the display window to indicate that the circuit breaker is in the open or tripped state.

Further, as shown in fig. 7, 9 and 10, the side wall of the rotating shaft 2 is concavely provided with an eccentric sliding groove 21, the lower end of the push rod 4 is provided with a protrusion 41, and the protrusion 41 is slidably arranged in the eccentric sliding groove 21. When the rotating shaft 2 rotates relative to the base, the protrusion 41 slides along the eccentric chute 21, so that the push rod 4 moves upwards or downwards.

Further, as shown in fig. 7, 9 and 10, the outer wall of the rotating shaft 2 is provided with a limiting surface 22, the lower end of the push rod 4 is convexly provided with a limiting portion 42 along the direction close to the rotating shaft 2, and when the circuit breaker is in the opening state, the limiting portion 42 can be abutted with the limiting surface 22. Illustratively, by the contact of the limiting portion 42 and the limiting surface 22, the push rod 4 is prevented from being separated from the rotating shaft 2 due to external vibration, and the protrusion 41 is further ensured to be in the eccentric chute 21.

Further, the bracket 31 is provided with a first connecting hole 312, the bottom wall of the middle cover 1 is provided with a second connecting hole 12, and the fastener passes through the first connecting hole 312 to be connected with the second connecting hole 12. In the present embodiment, two first connection holes 312 are provided at a spacing on the bracket 31. Two second connection holes 12 are provided at a distance from the bottom wall of the middle cap 1. In some applications, the fastener is a screw that is threaded through the first connection hole 312 and the second connection hole 12; in other applications, the fastener is a rivet that rivets through the first attachment hole 312 with the second attachment hole 12.

In the present embodiment, an elastic member 34 is disposed between the bracket 31 and the indicator 32, and no force is applied to the indicator 32 at the second end of the push rod 4, and the elastic member 34 is configured to rotate the indicator 32 to indicate the closing state. When the push rod 4 slides downwards, the elastic piece 34 is additionally arranged, so that the indicator 32 is reset.

As shown in fig. 7 and 8, a fixed shaft 33 is fixedly arranged on the bracket 31, the indicator 32 is provided with a round hole 322, and the indicator 32 is sleeved on the fixed shaft 33 through the round hole 322. Specifically, the inner diameter of the circular hole 322 is larger than the outer diameter of the fixed shaft 33, so that the indicator 32 can rotate around the fixed shaft 33.

Further, the indicating device 3 further comprises a micro switch 35, the micro switch 35 is arranged on the side wall of the bracket 31, and the elastic piece 34 can enable the indicating piece 32 to always have a trend of approaching the micro switch 35. When the push rod 4 slides upwards, the indicator 32 is pushed away from the micro switch 35; when the push rod 4 slides down, the indicator 32 is at a position indicating a closing state, and under the action of the elastic member 34, the indicator 32 resets and triggers the micro switch 35.

Illustratively, the elastic member 34 is a torsion spring, a spiral section of the torsion spring is sleeved on the fixed shaft 33, one end of the torsion spring abuts against the bracket 31, and the other end of the torsion spring abuts against the indicator 32. The torsion of the torsion spring can be selected to be different according to actual use conditions, and the torsion spring is not excessively limited.

Further, as shown in fig. 7, the indicator 32 is provided with a stopper surface 323 on a side close to the micro switch 35, and the stopper surface 323 can be abutted against the elastic piece 351 of the micro switch 35. When the push rod 4 moves down, the indicator 32 is pressed against the elastic sheet 351 of the micro switch 35 by the restoring torsion of the elastic member 34.

In this embodiment, the inner side wall of the middle cap 1 is provided with a baffle 13, and the micro switch 35 is located between the baffle 13 and the side wall of the bracket 31. When the surrounding environment vibrates, the baffle 13 is additionally arranged, so that the micro switch 35 can be limited to shake greatly. Further, as shown in fig. 3, 5 and 7, a boss 14 is provided on the bottom wall of the middle cover 1, a jack 313 is provided on the bracket 31, and the connection stability between the bracket 31 and the middle cover 1 is ensured by the cooperation of the boss 14 and the jack 313.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The circuit breaker, its characterized in that includes:

The shell comprises a base and a middle cover (1), wherein the middle cover (1) is covered on the base, and a guide groove (11) is formed in the bottom wall of the middle cover (1);

the rotating shaft (2) is rotatably arranged in the base;

The indicating device (3) comprises a bracket (31) and an indicating piece (32) rotatably arranged on the bracket (31), wherein the bracket (31) is arranged in the middle cover (1), and the bracket (31) is provided with an avoidance hole (311);

The first end of push rod (4) with the eccentric department sliding connection of pivot (2), the second end of push rod (4) slides and wears to establish guide way (11) with dodge the hole, push rod (4) are configured as: when the rotating shaft (2) is rotated, the first end of the push rod (4) slides relative to the rotating shaft (2), the main body part of the push rod (4) slides in the guide groove (11), and the other end of the push rod (4) can push the indicating piece (32) to rotate so as to indicate the state of the circuit breaker.

2. Circuit breaker according to claim 1, characterized in that the push rod (4) has a square shape at one end cross section and the guide groove (11).

3. The circuit breaker according to claim 2, characterized in that the side wall of the rotating shaft (2) is concavely provided with an eccentric chute (21), the first end of the push rod (4) is provided with a protrusion (41), and the protrusion (41) is slidingly arranged in the eccentric chute (21); be provided with spacing face (22) on pivot (2), the first end of push rod (4) is equipped with spacing portion (42), when the circuit breaker is in the brake-separating state, spacing portion (42) can with spacing face (22) butt.

4. The circuit breaker according to claim 1, characterized in that the bracket (31) is provided with a first connecting hole (312), the bottom wall of the middle cover (1) is provided with a second connecting hole (12), and a fastener passes through the first connecting hole (312) to be connected with the second connecting hole (12).

5. Circuit breaker according to claim 1, characterized in that an elastic element (34) is arranged between the bracket (31) and the indicator (32), no force being applied to the indicator (32) at the second end of the push rod (4), the elastic element (34) being configured to rotate the indicator (32) to indicate the closing state.

6. The circuit breaker according to claim 5, characterized in that the bracket (31) is provided with a fixed shaft (33), the indicator (32) is provided with a round hole (322), and the indicator (32) is sleeved on the fixed shaft (33) through the round hole (322);

The elastic piece (34) comprises a torsion spring, a spiral section of the torsion spring is sleeved on the fixed shaft (33), one end of the torsion spring is abutted to the bracket (31), and the other end of the torsion spring is abutted to the indicating piece (32).

7. The circuit breaker according to claim 5, characterized in that the indicating means (3) further comprise a microswitch (35) arranged on a side wall of the bracket (31), the indicator (32) triggering the microswitch (35) when the indicator (32) is in a position indicating a closing state.

8. The circuit breaker according to claim 7, characterized in that the indicator (32) is provided with a stop surface (323), said stop surface (323) being able to abut against a dome (351) of the microswitch (35).

9. Circuit breaker according to claim 7, characterized in that the inner side wall of the middle cover (1) is provided with a shutter (13), the micro-switch (35) being located between the shutter (13) and the side wall of the bracket (31).

10. The circuit breaker according to any of claims 1-9, characterized in that the housing further comprises an upper cover covering the middle cover (1), the upper cover being provided with a display window, the arcuate edge of the indicator (32) being provided with a closing indicator surface (324) and a breaking or tripping indicator surface (325), the closing indicator surface (324) and the breaking or tripping indicator surface (325) being selectively positive for the display window.