Circuit breaker with leakage protection module

Abstract

The utility model provides a circuit breaker with a leakage protection module. The circuit breaker comprises a housing; a middle cover; the shell is arranged in the shell; the electric leakage protection module comprises an electric leakage protection shell, and the electric leakage protection shell is provided with a through groove and a baffle arranged on the edge of the through groove; the indicating piece comprises an indicating rod, an abutting rod and a limiting rod, the abutting rod and the limiting rod are arranged on the outer wall of the indicating rod, the abutting rod is connected with the tripping device, the indicating piece has an initial position and a working position, and at the initial position, the indicating rod and the abutting rod are arranged corresponding to the through groove and can be inserted into or moved out of the through groove; at the working position, the abutting rod rotates to the position below the baffle along with the indicating rod; the lead sealing boss is arranged on the electric leakage protection shell and used for abutting against the limiting rod when the indicating piece is located at the working position so as to prevent the indicating piece from being switched to the initial position from the working position, and the circuit breaker overcomes the defect that in the prior art, lead sealing mostly adopts one sticker for sealing, and consequently the anti-theft performance is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical equipment, in particular to a circuit breaker with a leakage protection module. Background Art

[0002] A circuit breaker is an electrical device used to switch circuits and protect circuit safety. A leakage protection module is generally installed in the circuit breaker. When a leakage fault occurs, the leakage protection module can detect the leakage signal and trigger the electromagnet to operate. The release drives the circuit breaker to trip to cut off the circuit and ensure the safety of equipment and personnel. In the utility model patent with the announcement number CN220155455U, a leakage protection module of a circuit breaker is disclosed, which includes a circuit board assembly, a release, and an indicator button. The circuit board assembly outputs a control signal to the release, and the indicator button is used to indicate the working state of the release. Since the leakage protection module is a protection for personal safety, for the sake of safety and tampering prevention, a lead seal is generally added before the circuit breaker leaves the factory to effectively prevent the circuit breaker from being opened or changed by unauthorized personnel during operation, resulting in the cancellation of the leakage protection function. In the industry, the lead seal is mostly directly sealed with a sticker to seal the leakage protection module, thereby preventing personnel from opening the parts in the leakage protection module. However, the use of stickers to seal is easy to be tampered with and has poor anti-theft performance. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defect that most of the lead seals in the prior art are sealed with a sticker, resulting in poor anti-theft performance, thereby providing a circuit breaker with a leakage protection module with good anti-theft performance.

[0004] To this end, the utility model provides a circuit breaker with a leakage protection module, comprising: a shell; a middle cover; a leakage protection module arranged inside the shell, comprising a leakage protection shell, the leakage protection shell having a through slot, and a baffle arranged at the edge of the through slot; an indicator, comprising an indicator rod, and an abutment rod and a limit rod arranged on the outer wall of the indicator rod, the abutment rod is connected to a tripping device, and the indicator has an initial position and a working position, wherein, in the initial position, the indicator rod and the abutment rod are arranged corresponding to the through slot and can be inserted into or removed from the through slot; in the working position, the abutment rod rotates to the bottom of the baffle following the indicator rod; a lead sealing boss, arranged on the leakage protection shell, used to abut against the limit rod when the indicator is in the working position, so as to prevent the indicator from switching from the working position to the initial position.

[0005] Further: the lead sealing boss includes a guide boss, a guide boss and an anti-slip boss which are arranged in sequence, the guide boss is provided with a guide slope, the height of the anti-slip boss is higher than the height of the guide boss, when the indicator is switched from the initial position to the working position, the limit rod crosses the anti-slip boss along the guide boss and the guide boss, and has an interference fit with the anti-slip boss during the sliding process.

[0006] Furthermore: the lead sealing boss is integrally formed on the leakage protection housing by injection molding.

[0007] Furthermore: the guide boss, the guide boss and the anti-slip boss are arranged to form a "["-shaped structure, and pre-breaking grooves are provided at the connection between the guide boss and the guide boss and the anti-slip boss.

[0008] Further: an elastic member is arranged between the indicator rod and the leakage protection housing, the indicator member has a first position during normal operation and a second position during leakage, the tripping device is used to drive the indicator member to switch between the first position and the second position, wherein when the indicator member is in the first position, the elastic member is in a compressed state; when the indicator member is in the second position, the elastic member is in an elastic reset state.

[0009] Further: the tripping device includes a tripping plate, on which a connecting groove is provided for the abutment rod to pass through, and both ends of the connecting groove respectively have a first limit step that abuts against the abutment rod when the indicator is in the first position, and a second limit step that abuts against the abutment rod when the indicator is in the second position, the abutment rod can move between the first limit step and the second limit step, and there is a transition slope between the first limit step and the second limit step.

[0010] The technical solution of the utility model has the following advantages:

[0011] 1. The utility model provides a circuit breaker with a leakage protection module. A lead sealing boss is provided. The lead sealing boss can abut against a limit rod of the indicator when the indicator is in the working position to prevent the indicator from switching from the working position to the initial position. That is, the abutment rod will be blocked by the baffle and will not move out of the through groove, thereby ensuring that the indicator will not be disassembled. Compared with the prior art method of achieving lead sealing by a sticker, this method has better anti-theft performance.

[0012] 2. The utility model provides a circuit breaker with a leakage protection module. The inventor cleverly designs the guiding boss and the guide boss. When installing the indicator, the abutment rod is passed through the through slot and then rotated clockwise by a certain angle. The limit rod can slide upward along the guiding inclined surface of the guide boss and cross the anti-slip boss. Since the limit rod has an interference fit with the anti-slip boss during the sliding process, the top surface height of the limit rod after crossing the anti-slip boss will be lower than the top surface height of the anti-slip boss, that is, the limit rod will conflict with the side surface of the anti-slip boss, so that the indicator rod will not fall out of the anti-slip boss and cannot be switched from the working position to the initial position. The above-mentioned lead sealing boss has the advantages of simple structure and quick and convenient installation. In addition, the indicator rod can only be rotated to the left and fall out of the through slot after the lead sealing boss is violently destroyed, which is helpful to remind the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is the overall structural diagram of the circuit breaker;

[0015] Figure 2 It is a structural schematic diagram of the lead sealing device;

[0016] Figure 3 It is a side view of the lead sealing device;

[0017] Figure 4 It is a schematic diagram of the structure between the abutment rod and the trip plate;

[0018] Figure 5 is a cross-sectional view between the abutment rod and the trip plate;

[0019] Figure 6 It is a side view between the abutment rod and the trip plate.

[0020] Description of reference numerals:

[0021] 1. Shell; 2. Middle cover; 21. Baffle; 3. Indicator; 31. Indicator rod; 312. Limit rod; 32. Abutment rod; 33. Connecting rod; 4. Lead sealing boss; 41. Anti-slip boss; 42. Guide boss; 43. Guide boss; 44. Pre-breaking groove; 5. Trip plate; 51. Connecting groove; 52. First limit step; 53. Second limit step; 6. Leakage protection shell; 7. Through groove; 71. Abutment groove. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Example

[0027] A circuit breaker with a leakage protection module comprises: a housing 1; a middle cover; a leakage protection module arranged inside the housing 1, comprising a leakage protection housing 6, the leakage protection housing 6 having a through slot 7, and a baffle 21 arranged at the edge of the through slot 7; an indicator 3, comprising an indicator rod 31, and an abutment rod 32 and a limit rod 312 arranged on the outer wall of the indicator rod 31, the abutment rod 32 being connected to a tripping device, the indicator 3 having an initial position and a working position, wherein in the initial position, the indicator rod 31 and the abutment rod 32 are arranged corresponding to the through slot 7, and can be inserted into or removed from the through slot 7; in the working position, the abutment rod 32 rotates to the bottom of the baffle 21 following the indicator rod 31; a lead sealing boss 4, arranged on the leakage protection housing 6, for abutting against the limit rod 312 when the indicator 3 is in the working position, so as to prevent the indicator 3 from switching from the working position to the initial position.

[0028] The above-mentioned specific improvements are as follows: compared with the prior art, the lead sealing device can simultaneously play the role of lead sealing and the role of tripping indication. The leakage protection module is installed on the middle cover, which is convenient for unified maintenance in the later stage. During the installation process, it is necessary to first insert the abutment rod 32 into the shell 1 from the through groove 7, and then rotate the indicator rod 31 to the bottom of the baffle 21. At the same time, the limit rod 312 will cross the anti-detachment boss 41 and have an interference fit with the anti-detachment boss 41. At this time, the abutment rod 32 is inserted into the leakage protection module and linked with the leakage protection module. Through the setting of the anti-detachment boss 41, the limit rod 312 cannot fall out from the entire lead sealing boss 4, preventing the indicator 3 from switching from the working position to the initial position, thereby playing the role of lead sealing.

[0029] On the basis of the above embodiment: the lead sealing boss 4 includes a guide boss 42, a guide boss 43 and an anti-slip boss 41 arranged in sequence, the guide boss 43 is provided with a guide inclined surface, the height of the anti-slip boss 41 is higher than the height of the guide boss 42, when the indicator is switched from the initial position to the working position, the limit rod 312 crosses the anti-slip boss 41 along the guide boss 42 and the guide boss 43, and has an interference fit with the anti-slip boss 41 during the sliding process.

[0030] The above specific improvements are: Figure 1-Figure 3 As shown, the height of the anti-slip boss 41 is higher than the height of the guide boss 42. When the indicator 3 switches from the initial position to the working position, the limit rod 312 will first cross the guide boss 42, and then, with the help of the guide boss 43, cross the anti-slip boss 41 and have an interference fit with the anti-slip boss 41.

[0031] On the basis of the above embodiment: the lead sealing boss 4 is integrally formed on the leakage protection housing 6 by injection molding.

[0032] The above specific improvements are: Figure 3 As shown, the lead sealing boss 4 is integrally formed on the leakage protection housing 6 by injection molding. When the leakage protection module needs to be repaired, the lead sealing boss 4 needs to be removed, and the lead sealing boss 4 becomes invalid and cannot be installed back.

[0033] On the basis of the above embodiment: the guide boss 42, the guide boss 43 and the anti-slip boss 41 are arranged to form a "["-shaped structure, and the guide boss 43 is respectively provided with a pre-breaking groove 44 at the connection with the guide boss 42 and the anti-slip boss 41.

[0034] The above specific improvements are: Figure 3 As shown, the guide boss 42, the guide boss 43 and the anti-slip boss 41 are surrounded to form a "["-shaped structure and a knocking groove for knocking with an external tool. By setting the knocking groove, the wall thickness of the guide boss 43 can be reduced, making it easier to knock off the lead sealing boss 4, and by setting the pre-breaking groove 44, the wall thickness of the connection between the guide boss 43 and the guide boss 42 and the anti-slip boss 41 is reduced, so that the operator can break the guide boss 42 and the anti-slip boss 41 by hand, thereby ensuring that when the limit rod 312 is separated from the anti-slip boss 41, the entire lead sealing boss 4 must be damaged.

[0035] On the basis of the above embodiment: an elastic member is arranged between the indicator rod and the leakage protection housing 6, the indicator 3 has a first position during normal operation and a second position during leakage, and the tripping device is used to drive the indicator 3 to switch between the first position and the second position, wherein when the indicator 3 is in the first position, the elastic member is in a compressed state; when the indicator 3 is in the second position, the elastic member is in an elastic reset state.

[0036] On the basis of the above embodiment: the tripping device includes a tripping plate 5, and a connecting groove 51 is provided on the tripping plate 5 for the abutment rod 32 to pass through. The two ends of the connecting groove 51 respectively have a first limiting step 52 that abuts against the abutment rod 32 when the indicator 3 is in the first position, and a second limiting step 53 that abuts against the abutment rod 32 when the indicator 3 is in the second position. The abutment rod 32 can move between the first limiting step 52 and the second limiting step 53, and there is a transition slope between the first limiting step 52 and the second limiting step 53.

[0037] The above specific improvements are: Figure 4-Figure 6As shown, the elastic member is arranged between the indicator rod 31 and the leakage protection module. When the indicator 3 is in the first position, the abutment rod 32 is located at the first limit step 52, and the reset button is in a compressed state, and the information transmitted is that the leakage protection module is in an operating state; when the indicator 3 is in the second position, the reset member is in an elastic reset state, and the abutment rod 32 moves from the first limit step 52 to the second limit step 53. Due to the guiding effect of the first limit step 52 and the second limit step 53, the indicator rod 31 pops up upward, and the information transmitted is that the leakage protection module is in an indicating state, and the operator will repair the equipment. Through the setting of the indicator 3, human-computer information interaction can be well realized.

[0038] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A circuit breaker with a leakage protection module, characterized in that: include: Housing (1); Middle cover; Arranged inside the housing (1); A leakage protection module comprises a leakage protection housing (6), wherein the leakage protection housing (6) has a through slot (7) and a baffle (21) arranged at the edge of the through slot (7); The indicating member (3) comprises an indicating rod (31), and an abutting rod (32) and a limiting rod (312) arranged on the outer wall of the indicating rod (31), wherein the abutting rod (32) is connected to the tripping device, and the indicating member (3) has an initial position and a working position, wherein in the initial position, the indicating rod (31) and the abutting rod (32) are arranged corresponding to the through slot (7) and can be inserted into or removed from the through slot (7); in the working position, the abutting rod (32) follows the indicating rod (31) to rotate to the bottom of the baffle (21); A lead sealing boss (4) is arranged on the leakage protection housing (6) and is used to abut against the limit rod (312) when the indicator (3) is in the working position, so as to prevent the indicator (3) from switching from the working position to the initial position.

2. A circuit breaker with a leakage protection module according to claim 1, characterized in that: The lead sealing boss (4) comprises a guide boss (42), a guide boss (43) and an anti-slip boss (41) which are arranged in sequence; the guide boss (43) is provided with a guide inclined surface; the height of the anti-slip boss (41) is higher than the height of the guide boss (42); when the indicator is switched from the initial position to the working position, the limit rod (312) crosses the anti-slip boss (41) along the guide boss (42) and the guide boss (43), and is interference-fitted with the anti-slip boss (41) during the sliding process.

3. A circuit breaker with a leakage protection module according to claim 1, characterized in that: The lead sealing boss (4) is integrally formed on the leakage protection housing (6) by injection molding.

4. A circuit breaker with a leakage protection module according to claim 2, characterized in that: The guide boss (42), the guide boss (43) and the anti-slip boss (41) are arranged to form a "["-shaped structure, and pre-breaking grooves (44) are provided at the connection points between the guide boss (43) and the guide boss (42) and the anti-slip boss (41).

5. A circuit breaker with a leakage protection module according to claim 1, characterized in that: An elastic member is arranged between the indicator rod and the leakage protection housing (6); the indicator member (3) has a first position in normal operation and a second position in leakage; the tripping device is used to drive the indicator member (3) to switch between the first position and the second position; when the indicator member (3) is in the first position, the elastic member is in a compressed state; when the indicator member (3) is in the second position, the elastic member is in an elastic reset state.

6. A circuit breaker with a leakage protection module according to claim 5, characterized in that: The tripping device comprises a tripping plate (5), the tripping plate (5) being provided with a connecting groove (51) for the abutment rod (32) to pass through, the two ends of the connecting groove (51) respectively comprising a first limiting step (52) abutting against the abutment rod (32) when the indicator (3) is in the first position, and a second limiting step (53) abutting against the abutment rod (32) when the indicator (3) is in the second position, the abutment rod (32) being able to move between the first limiting step (52) and the second limiting step (53), and a transition slope being provided between the first limiting step (52) and the second limiting step (53).

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