Leakage tripping reset self-locking mechanism

Abstract

The utility model discloses an electric leakage tripping reset self-locking mechanism, which comprises a shell, a tripping assembly and an indicating piece, wherein the tripping assembly and the indicating piece are arranged in the shell; a release, a main shaft and a release rod are further arranged in the shell, and the release rod is pushed to rotate along the main shaft through an ejector rod of the release, so that locking of the release rod on the indicating piece is relieved; a first supporting shaft and a first torsional spring installed on the first supporting shaft are arranged in the shell. One side of the first supporting shaft is provided with a first limiting part used for limiting one end of the first torsional spring, the other end of the first torsional spring is connected with the indicating piece, and the indicating piece is pushed by the first torsional spring to slide upwards after unlocking. Compared with an existing indicating mechanism, the device has the advantages of being simple in structure and small in number of parts. In addition, the first torsion spring ensures normal sliding of the indicating piece, and meanwhile, components used for fixing the first torsion spring can be directly formed in the shell, so that compared with the prior art, the fixing structure of the first torsion spring is simpler.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker technical field, concretely is a leakage tripping reset self -locking mechanism. BACKGROUND

[0002] Small circuit breaker and residual current operated circuit breaker products, generally have overload protection and short circuit protection function, when the line appears overload or short circuit fault, the product will trip open. However, most of the existing small circuit breaker will have the indication function of closing and opening, but does not have the indication function of tripping open, and cannot distinguish whether the fault is disconnected or manually disconnected.

[0003] Through the retrieval discovery, the announcement number for CN119517695B, or the announcement number for CN104252998B etc. Prior art, although can show the fault reason to the user, but the indication mechanism for indicating the fault reason is relatively complex, and the quantity is much. UTILITY MODEL CONTENT

[0004] The utility model discloses a leakage tripping reset self -locking mechanism to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a leakage tripping reset self -locking mechanism, including the casing, the tripping assembly of installing in the casing and the indicating piece that slides on the casing, the tripping device and the main shaft are still equipped in the casing, and the tripping lever is rotatably installed on the main shaft, and the tripping lever is rotated counterclockwise along the main shaft by the top rod of the tripping device to push the tripping lever to remove the locking of the indicating piece by the tripping lever, the first support shaft and the first torsional spring installed on the first support shaft are equipped in the casing, one side of the first support shaft is equipped with the first limit part for limiting one end of the first torsional spring, and the other end of the first torsional spring is connected with the indicating piece, and the indicating piece is pushed to slide upward after unlocking by the first torsional spring.

[0006] As a preferred technical scheme of the utility model: the side, away from the first limit part of the first support shaft, is further equipped with the second limit part for guiding directional movement of the other end of the first torsional spring.

[0007] As a preferred technical scheme of the utility model: the first torsional spring is connected with the fixed groove equipped on the indicating piece after passing through the second limit part.

[0008] As a preferred technical scheme of the utility model: the casing is further equipped with the sliding slot for guiding the sliding of the indicating piece and the limit block for limiting the continuous upward movement of the indicating piece, and the indicating piece is contacted with the limit block through the convex part.

[0009] As the preferred technical scheme of the utility model: the inner of the chute is further equipped with a guide block, and the indicating part is connected with the guide block through the guide groove.

[0010] As the preferred technical scheme of the utility model: the inner of the casing is further equipped with a second support shaft, and a second torsional spring is sleeved on the second support shaft, and the second torsional spring promotes the one end of the tripping lever away from the tripper to be buckled on the indicating part.

[0011] As the preferred technical scheme of the utility model: one end of the second torsional spring is abutted on the abutment part in the casing, and the other end of the second torsional spring promotes the tripping lever to rotate clockwise after the external force disappears, to complete the locking of the tripping lever to the indicating part.

[0012] As the preferred technical scheme of the utility model: the tripping lever is sleeved on the main shaft through the shaft pin part, and the upper end of the tripping lever is further equipped with a buckle, and the buckle is buckled on the pin of the indicating part, to realize the locking of the tripping lever to the indicating part.

[0013] As the preferred technical scheme of the utility model: the outer surface of the buckle is equipped with a buckle groove for buckling the second torsional spring.

[0014] As the preferred technical scheme of the utility model: the tripping lever is in contact with the top rod of the tripper through the equipped baffle.

[0015] The utility model discloses the beneficial effects are: 1. when the tripper promotes the bottom of tripping lever, promotes tripping lever to rotate along the main shaft, and the tripping lever is separated from the indicating part at this time, and the indicating part can be promoted to move upwards due to the separation of the indicating part and tripping lever at this time, and then the tripping reason is shown to the user, therefore, compared with the indicating mechanism of prior art, the equipment has the advantages of simple structure, and the number of parts is less.

[0016] 2. the middle part of the first torsional spring is supported by the first support shaft, and the other end of the first torsional spring is supported by the first limiting part, so that the components for fixing the first torsional spring can be directly formed in the casing while ensuring the normal sliding of the indicating part, and the fixing structure of the first torsional spring is simpler compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the main body structure schematic drawing of the utility model;

[0018] Figure 2 It is the main body structure schematic drawing of the utility model when the tripping assembly is hidden;

[0019] Figure 3This is a schematic diagram of the internal structure of the housing of this utility model;

[0020] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the main structure of the transmission component of this utility model;

[0022] Figure 6 This is a schematic diagram of the main structure of the indicator of this utility model.

[0023] In the figure: 1. Housing; 11. First limiting part; 12. Guide block; 13. Slide groove; 14. First support shaft; 15. Second limiting part; 16. Second support shaft; 17. Abutment part; 18. Limiting block; 2. Tripping device; 3. Tripping rod; 31. Buckle; 32. Buckle groove; 33. Baffle; 4. Tripping assembly; 5. Indicator; 51. Guide groove; 52. Fixing groove; 53. Protrusion; 54. Buckle pin; 6. Main shaft. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0025] Please see Figures 1-6This utility model provides an embodiment of a leakage current tripping and reset self-locking mechanism, including a housing 1, a tripping assembly 4 installed in the housing 1, and an indicator 5 sliding on the housing 1; the housing 1 also provides a tripping device 2, a main shaft 6, and a tripping rod 3 rotatably installed on the main shaft 6, and the tripping rod 3 is pushed by the push rod of the tripping device 2 to rotate counterclockwise along the main shaft 6 to release the locking of the tripping rod 3 to the indicator 5; the housing 1 provides a first support shaft 14 and a first torsion spring 7 installed on the first support shaft 14; one side of the first support shaft 14 is provided with a first limiting part 11 for limiting one end of the first torsion spring 7, and the other end of the first torsion spring 7 is connected to the indicator 5, and the first torsion spring 7 pushes the indicator 5 to slide upward after unlocking. Based on this, the leakage current indication can be realized while simplifying the structure of the leakage current indication.

[0026] Specifically, such as Figure 1 Figure 2 As shown, when leakage occurs, the trip unit 2 pushes the bottom of the trip lever 3, causing the trip lever 3 to rotate along the main shaft 6. At this time, the trip lever 3 separates from the indicator 5. Since the indicator 5 is separated from the trip lever 3, the first torsion spring 7 can cause the indicator 5 to move upward, thereby displaying the cause of the trip to the user. Therefore, compared with the existing indicator mechanism, this device has the advantages of simple structure and fewer parts.

[0027] The existing equipment has several problems, such as the leakage current tripping lever, the leakage current tripping lever return spring, the leakage current tripping lever lower limit, the leakage current tripping lever upper limit, the leakage current indicator, the leakage current indicator return spring, the leakage current indicator lower limit, and the leakage current indicator upper limit. The upper limit requires a separate cover to press down the leakage current tripping lever or the leakage current indicator, resulting in a large number of parts and a complex manufacturing process.

[0028] like Figure 3 Figure 4 As shown, the first support shaft 14 supports the middle part of the first torsion spring 7, and the first limiting part 11 supports the other end of the first torsion spring 7. Thus, while ensuring the normal sliding of the indicator 5, the components used to fix the first torsion spring 7 can be directly molded in the housing 1. Therefore, the fixing structure of the first torsion spring 7 is simpler than that of the prior art.

[0029] In order to ensure that the indicator 5 slides reliably, the first support shaft 14 is provided with a second limiting part 15 on the side away from the first limiting part 11 for guiding the other end of the first torsion spring 7 to move in a directional manner. Therefore, the second limiting part 15 can be used to cover the outside of the first torsion spring 7 to prevent the part used to cause the indicator 5 to move from falling off, so that the first torsion spring 7 can reliably cause the indicator 5 to move.

[0030] Similarly, such as Figure 6 As shown, the first torsion spring 7 passes through the second limiting part 15 and connects to the fixing groove 52 provided on the indicator 5, thus making the connection between the first torsion spring 7 and the indicator 5 stable and reliable.

[0031] Combination Figure 4 , Figure 6 The housing 1 is further provided with a sliding groove 13 for guiding the sliding of the indicator 5 and a limiting block 18 for restricting the indicator 5 from continuing to move upward; wherein, the indicator 5 contacts the limiting block 18 through a protrusion 53. Based on this, the sliding groove 13 guides the indicator 5 to slide externally, and the protrusion 53 contacts the limiting block 18 to prevent the indicator 5 from continuing to slide outward. Therefore, the limiting block 18 for limiting the movement of the indicator 5 can also be directly formed inside the housing 1.

[0032] In addition, since the guide block 12 is provided inside the slide groove 13, and the indicator 5 is adapted to be connected to the guide block 12 through the guide groove 51; specifically, the guide block 12 is a rectangular block, and the guide groove 51 is a rectangular groove and is fitted on the rectangular block, so the guide block 12 can be used to guide the indicator 5 to slide in a direction.

[0033] In summary, the indicator 5 can automatically limit its position after being installed in the product. The upper limit is achieved by the protrusion 53 and the limiting block 18, and the lower limit is achieved by the first torsion spring 7 inside the housing 1. The mechanism can reliably achieve stability without the need for a cover to press down the upper limit, thus solving the problems of a large number of parts and complex processes.

[0034] Based on the above solution, the housing 1 is further provided with a second support shaft 16, and a second torsion spring 8 is fitted on the second support shaft 16. The second torsion spring 8 causes the end of the tripping rod 3 away from the tripping device 2 to be fastened to the indicator 5. Therefore, the second torsion spring 8 can be used to reset the tripping rod 3 while also pressing the upper end of the tripping rod 3 against the indicator 5 to prevent the indicator 5 from sliding automatically.

[0035] Similarly, to simplify the fixing structure of the second torsion spring 8, one end of the second torsion spring 8 abuts against the abutment part 17 provided in the housing 1, and the other end of the second torsion spring 8 causes the release lever 3 to rotate clockwise after the external force disappears, so as to lock the release lever 3 to the indicator 5.

[0036] like Figure 5 As shown, the release lever 3 is sleeved on the main shaft 6 through a provided shaft pin 34, and the upper end of the release lever 3 is also provided with a buckle 31, which is fastened to the buckle pin 54 on the indicator 5 through the buckle 31, so as to realize the locking of the release lever 3 to the indicator 5.

[0037] To prevent the second torsion spring 8 from falling off, a buckle groove 32 for holding the second torsion spring 8 is provided on the outer surface of the buckle 31. Therefore, when one end of the second torsion spring 8 is pressed on the buckle groove 32, the buckle groove 32 can prevent the second torsion spring 8 from falling off to the outside.

[0038] In addition, since the tripping rod 3 contacts the top rod of the tripping device 2 through the provided baffle 33, the contact surface is enlarged so that the top rod of the tripping device 2 can stably and reliably push the tripping rod 3 to rotate, thereby ensuring that the tripping assembly 4 can be successfully tripped.

[0039] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A leakage current trip reset self-locking mechanism, characterized in that: The device includes a housing (1), a trip assembly (4) installed inside the housing (1), and an indicator (5) that slides on the housing (1); the housing (1) also includes a trip unit (2) and a main shaft (6) and a trip rod (3) rotatably mounted on the main shaft (6), and the trip rod (3) is pushed by the push rod of the trip unit (2) to rotate counterclockwise along the main shaft (6) to release the lock of the trip rod (3) on the indicator (5); The housing (1) is provided with a first support shaft (14) and a first torsion spring (7) mounted on the first support shaft (14); a first limiting part (11) is provided on one side of the first support shaft (14) for limiting one end of the first torsion spring (7), and the other end of the first torsion spring (7) is connected to the indicator (5), and the indicator (5) is pushed upward by the first torsion spring (7) to unlock.

2. The leakage current tripping and reset self-locking mechanism according to claim 1, characterized in that: The first support shaft (14) is provided with a second limiting part (15) on the side away from the first limiting part (11) for guiding the other end of the first torsion spring (7) to move in a directional manner.

3. The leakage current tripping and reset self-locking mechanism according to claim 2, characterized in that: After the first torsion spring (7) passes through the second limiting part (15), it connects to the fixing groove (52) provided on the indicator (5).

4. The leakage current tripping and reset self-locking mechanism according to claim 1, characterized in that: The housing (1) is also provided with a slide groove (13) for guiding the sliding of the indicator (5) and a limiting block (18) for restricting the indicator (5) from continuing to move upward; wherein the indicator (5) contacts the limiting block (18) through the protrusion (53).

5. The leakage current tripping and reset self-locking mechanism according to claim 4, characterized in that: The slide (13) is also provided with a guide block (12), and the indicator (5) is adapted to be connected to the guide block (12) through the guide groove (51).

6. A leakage current tripping and reset self-locking mechanism according to any one of claims 1-5, characterized in that: The housing (1) is also provided with a second support shaft (16), and a second torsion spring (8) is fitted on the second support shaft (16). The second torsion spring (8) causes the tripping rod (3) to be attached to the indicator (5) at one end away from the tripping device (2).

7. The leakage current tripping and reset self-locking mechanism according to claim 6, characterized in that: One end of the second torsion spring (8) abuts against the abutment part (17) provided in the housing (1), and the other end of the second torsion spring (8) causes the release lever (3) to rotate clockwise after the external force disappears, so as to lock the indicator (5) with the release lever (3).

8. The leakage current tripping and reset self-locking mechanism according to claim 6, characterized in that: The release lever (3) is sleeved on the main shaft (6) through a provided shaft pin (34), and the upper end of the release lever (3) is also provided with a buckle (31), which is fastened to the pin (54) on the indicator (5) through the buckle (31) to achieve the locking of the release lever (3) on the indicator (5).

9. The leakage current tripping and reset self-locking mechanism according to claim 8, characterized in that: The outer surface of the buckle (31) is provided with a buckle groove (32) for fastening the second torsion spring (8).

10. The leakage current tripping and reset self-locking mechanism according to claim 1, characterized in that: The trip lever (3) contacts the top rod of the trip unit (2) through the provided baffle (33).

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