Miniature circuit breaker protection device

Abstract

The utility model relates to a miniature circuit breaker protection device, which comprises a mounting guide rail, a left baffle plate, a right baffle plate, a connecting piece, a front baffle plate and a padlock, the mounting guide rail is provided with a miniature circuit breaker, the miniature circuit breaker is provided with an operating handle, the rear end of the left baffle plate and the rear end of the right baffle plate are respectively provided with a pi-shaped groove, and the rear end of the left baffle plate and the rear end of the right baffle plate are respectively provided with a U-shaped groove. The left baffle plate and the right baffle plate are arranged on the mounting guide rail through the pi-shaped groove, the left baffle plate and the right baffle plate are respectively arranged on the left side and the right side of the miniature circuit breaker, the front baffle plate is arranged on the left baffle plate and the right baffle plate through the connecting piece, and the padlock is arranged on the connecting piece. Through the mutual cooperation of the left baffle plate, the right baffle plate, the connecting piece, the front baffle plate and the padlock, the operation handle of the miniature circuit breaker can be independently protected, so that the misoperation of a worker during the operation in the cabinet is prevented, the protection performance and the safety coefficient of a circuit are improved, and the electricity utilization safety of a power supply loop is ensured.

Description

Technical Field

[0001] The utility model relates to a miniature circuit breaker protection device. Background Art

[0002] In power supply and distribution systems, miniature circuit breakers are often used to protect and control circuits. For example, an intelligent protective miniature circuit breaker, such as that disclosed in publication number CN117352338A, comprises a housing, a static contact fixedly connected to the interior of the housing, a movable contact rotatably connected to the interior of the housing, an arc extinguishing device disposed within the housing for extinguishing an arc generated when the static and movable contacts are disconnected, and an electromagnetic switch assembly configured to push the movable contact away from the static contact when the current is excessive, thereby protecting the circuit. This miniature circuit breaker controls a scraping device to clean the oxide layer formed on the surface of the movable contact, thereby reducing the resistance when the movable and static contacts make contact, thereby facilitating the closing of the movable and static contacts and energizing the circuit. However, the miniature circuit breaker lacks an anti-accidental contact protection device, making it very easy to cause misoperation during on-site operation, maintenance, and subsequent operations, causing the previously closed circuit breaker to open, bringing uncertainty and increasing risks to power supply safety and stable use. Especially when it is applied to industrial production, the back-end load is often an industrial load, and any misoperation is not allowed. Misoperation will bring very large economic losses, such as production line shutdown, key equipment cessation of work, which will cause the entire production line to stop operating. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] The technical problem to be solved by the utility model is how to solve the problem that the existing miniature circuit breaker is prone to misoperation during on-site operation, maintenance and subsequent operations due to the lack of protection devices.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A miniature circuit breaker protection device includes a mounting rail, a miniature circuit breaker is arranged on the mounting rail, an operating handle is provided on the miniature circuit breaker, and also includes a left baffle, a right baffle, a connecting piece, a front baffle and a padlock, the rear ends of the left baffle and the right baffle are both provided with a π-shaped groove, the left baffle and the right baffle are both arranged on the mounting rail through the π-shaped groove, the left baffle and the right baffle are respectively arranged on the left and right sides of the miniature circuit breaker, the front baffle is arranged on the left baffle and the right baffle through the connecting piece for protecting the miniature circuit breaker, and the padlock is arranged on the connecting piece for cooperating with the front baffle.

[0006] As a preferred solution of the miniature circuit breaker protection device of the utility model, wherein: the connecting part includes a first connecting plate, a second connecting plate, two rivet nuts, two countersunk circular holes and two countersunk bolts, the first connecting plate and the second connecting plate are respectively arranged on the left and right sides of the bottom of the front baffle, the two rivet nuts are respectively arranged on the inner sides of the first connecting plate and the second connecting plate, the two countersunk circular holes are respectively opened at the front bottom of the left baffle and the right baffle, the two countersunk bolts pass through the countersunk circular holes and are respectively connected to the two rivet nuts, with the countersunk bolts as the transverse axis, so that the front baffle can be closed vertically upward or opened vertically downward.

[0007] As a preferred solution of the miniature circuit breaker protection device of the present invention, the front baffle includes a first folding plate, a second folding plate, a third folding plate, a fourth folding plate and a square groove. The first folding plate, the second folding plate, the third folding plate and the fourth folding plate are arranged in sequence to form an arch structure, so that the front baffle does not affect the movement of the operating handle from the closing position to the tripping position or the opening position when the front baffle is in a closed state, that is, ensuring the normal operation of the miniature circuit breaker. The first connecting plate and the second connecting plate are respectively arranged on the left and right sides of the first folding plate, and the square groove is opened on the fourth folding plate.

[0008] As a preferred solution of the miniature circuit breaker protection device of the utility model, wherein: the connecting piece also includes two fifth folding plates, two sixth folding plates and a through hole, the two fifth folding plates are respectively arranged at the front end of the left baffle and the right baffle, and the two sixth folding plates are respectively arranged on the two fifth folding plates, and the fifth folding plate and the sixth folding plate form an "L"-shaped structure, which not only realizes the limitation of the miniature circuit breaker, but also can better cooperate with the front baffle, the through hole is opened on the sixth folding plate, the sixth folding plate cooperates with the square groove, and the through hole cooperates with the padlock.

[0009] As a preferred solution of the miniature circuit breaker protection device of the present invention, limit blocks are provided at the top of the middle ends of the left baffle and the right baffle, which can play a certain limiting role on the miniature circuit breaker during installation.

[0010] Beneficial effects:

[0011] 1. The left baffle, right baffle, connector, front baffle and padlock work together to protect the operating handle of the miniature circuit breaker individually, preventing staff from making misoperations when operating in the cabinet, improving the protection performance and safety factor of the circuit, and thus ensuring the safety of the power supply circuit;

[0012] 2. It can be locked with a padlock and two mobile padlocks can be installed to realize the authority management of operators and further avoid misoperation of the miniature circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0014] Figure 1 This is a structural diagram of the miniature circuit breaker protection device in the closed state when in use.

[0015] Figure 2 This is a structural diagram of the miniature circuit breaker protection device in the open state when in use.

[0016] Figure 3 This is a schematic diagram of the structure of the miniature circuit breaker protection device with the front baffle facing vertically upward.

[0017] Figure 4 This is a schematic diagram of the structure of the miniature circuit breaker protection device with the front baffle facing vertically downward.

[0018] Figure 5 This is a schematic diagram of the structure of the left baffle and the right baffle of the miniature circuit breaker protection device.

[0019] In the figure: 1. Left baffle; 2. Right baffle; 21. π-shaped groove; 22. Limit block; 23. Fifth folding plate; 24. Sixth folding plate; 25. Through hole; 26. Countersunk circular hole; 3. Front baffle; 31. First connecting plate; 32. Second connecting plate; 33. Rivet nut; 34. Square groove; 35. First folding plate; 36. Second folding plate; 37. Third folding plate; 38. Fourth folding plate; 4. Miniature circuit breaker; 41. Operating handle; 5. Mounting rail; 6. Padlock; 7. Countersunk bolt. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0023] Example

[0024] Reference Figures 1 to 5 This embodiment provides a miniature circuit breaker protection device, including a mounting rail 5, on which a miniature circuit breaker 4 is mounted, and an operating handle 41 is mounted on the miniature circuit breaker 4. The device also includes a left baffle 1, a right baffle 2, a connector, a front baffle 3, and a padlock 6. The rear ends of the left baffle 1 and the right baffle 2 are each provided with a π-shaped groove 21. The left baffle 1 and the right baffle 2 are both mounted on the mounting rail 5 through the π-shaped groove 21. The left baffle 1 and the right baffle 2 are respectively mounted on the left and right sides of the miniature circuit breaker 4. The front baffle 3 is mounted on the left baffle 1 and the right baffle 2 through a connector for protecting the miniature circuit breaker 4. The padlock 6 is mounted on the connector for mating with the front baffle 3.

[0025] The circuit breaker device is mainly composed of a mounting rail 5, a miniature circuit breaker 4 and an operating handle 41. The mounting rail 5 is installed in the control cabinet, the miniature circuit breaker 4 is installed on the mounting rail 5, and the operating handle 41 is installed on the miniature circuit breaker 4. The staff can turn the operating handle 41 to make the circuit on and off. However, it is very easy to cause misoperation of the operating handle 41 during on-site operation, maintenance and subsequent operations, causing the originally closed circuit breaker to be disconnected, bringing uncertainty to the power supply safety and stable use, and increasing risks. In this embodiment, a protective device is installed on the circuit breaker device, which is mainly composed of a left baffle 1, a right baffle 2, a connector, a front baffle 3 and a padlock 6. The left baffle 1 and the right baffle 2 are symmetrically installed on the left and right sides of the miniature circuit breaker 4. Specifically, π-shaped grooves are provided at the rear ends of the left baffle 1 and the right baffle 2. 21, the π-shaped groove 21 cooperates with the mounting guide rail 5, so that the left baffle 1 and the right baffle 2 can be mounted on the mounting guide rail 5 through the π-shaped groove 21, and slide to the left and right sides of the miniature circuit breaker 4, respectively fitting with the left and right sides of the miniature circuit breaker 4. A front baffle 3 is installed at the front end of the left baffle 1 and the right baffle 2 through a connector. The front baffle 3 cooperates with the left baffle 1 and the right baffle 2 to protect the operating handle 41 on the miniature circuit breaker 4 to avoid misoperation by the staff, thereby improving the protection performance and safety factor of the circuit, thereby ensuring the power safety of the power supply circuit and avoiding economic losses caused by misoperation; this embodiment also locks the front baffle 3 by installing a padlock 6 on the connector to prevent misoperation by the staff, thereby further ensuring the power safety of the power supply circuit.

[0026] Specifically, the connecting parts include a first connecting plate 31, a second connecting plate 32, two rivet nuts 33, two countersunk circular holes 26 and two countersunk bolts 7. The first connecting plate 31 and the second connecting plate 32 are respectively arranged on the left and right sides of the bottom of the front baffle 3. The two rivet nuts 33 are respectively arranged on the inner sides of the first connecting plate 31 and the second connecting plate 32. The two countersunk circular holes 26 are respectively opened at the front bottom of the left baffle 1 and the right baffle 2. The two countersunk bolts 7 pass through the countersunk circular holes 26 and are respectively connected to the two rivet nuts 33.

[0027] The connecting parts are mainly composed of a first connecting plate 31, a second connecting plate 32, two rivet nuts 33, two countersunk circular holes 26 and two countersunk bolts 7. The first connecting plate 31 and the second connecting plate 32 are symmetrically installed on the left and right sides of the bottom of the front baffle 3. The inner sides of the first connecting plate 31 and the second connecting plate 32 are both installed with rivet nuts 33. The front bottoms of the left baffle 1 and the right baffle 2 are both provided with countersunk circular holes 26. The countersunk circular holes 26 cooperate with the countersunk bolts 7. When installing the front baffle 3, The two countersunk bolts 7 are respectively passed through the countersunk circular holes 26 and the first connecting plate 31 and the second connecting plate 32 on the left baffle 1 and the right baffle 2, and the two countersunk bolts 7 are respectively matched with the rivet nuts 33 on the inner sides of the first connecting plate 31 and the second connecting plate 32 to realize the rotational connection between the first connecting plate 31 and the second connecting plate 32 and the left baffle 1 and the right baffle 2 respectively, so as to realize the front baffle 3 can be closed vertically upward or opened vertically downward with the countersunk bolts 7 as the transverse axis.

[0028] Specifically, the front baffle 3 includes a first folding plate 35, a second folding plate 36, a third folding plate 37, a fourth folding plate 38 and a square groove 34. The first folding plate 35, the second folding plate 36, the third folding plate 37 and the fourth folding plate 38 are arranged in sequence to form an arch structure. The first connecting plate 31 and the second connecting plate 32 are respectively arranged on the left and right sides of the first folding plate 35, and the square groove 34 is opened on the fourth folding plate 38.

[0029] The front baffle 3 is mainly composed of a first folding plate 35, a second folding plate 36, a third folding plate 37, a fourth folding plate 38 and a square groove 34, wherein the first folding plate 35, the second folding plate 36, the third folding plate 37 and the fourth folding plate 38 are connected in sequence at a certain angle by welding to form an arch structure, so that the front baffle 3 will not affect the movement of the operating handle 41 from the closing position to the tripping position or the opening position when the front baffle 3 is in the closed state, that is, it ensures the normal operation of the miniature circuit breaker 4 and does not affect the electrical and mechanical properties of the miniature circuit breaker 4. The first connecting plate 31 and the second connecting plate 32 are symmetrically installed on the left and right sides of the first folding plate 35, so that the front baffle 3 can be closed vertically upward or opened vertically downward through the connecting piece, and two square grooves 34 are symmetrically opened on the left and right sides on the fourth folding plate 38 to achieve mutual cooperation between the front baffle 3 and the connecting piece.

[0030] Furthermore, the connecting part also includes two fifth folding plates 23, two sixth folding plates 24 and a through hole 25. The two fifth folding plates 23 are respectively arranged at the front end of the left baffle 1 and the right baffle 2, and the two sixth folding plates 24 are respectively arranged on the two fifth folding plates 23. The fifth folding plate 23 and the sixth folding plate 24 form an "L"-shaped structure. The through hole 25 is opened on the sixth folding plate 24. The sixth folding plate 24 cooperates with the square groove 34, and the through hole 25 cooperates with the padlock 6.

[0031] In this embodiment, fifth folding plates 23 are respectively installed vertically at the front ends of the left baffle 1 and the right baffle 2. During installation, the fifth folding plates 23 can not only further limit the position of the miniature breaker, which is convenient for the installation of the entire device, but also limit the position of the front baffle 3 in the closed state, so as to better cooperate between the front baffle 3 and the connecting piece. A sixth folding plate 24 is installed vertically outward on the two fifth folding plates 23. The fifth folding plate 23 and the sixth folding plate 24 form an "L"-shaped structure, which can limit the position of the miniature breaker while better cooperating with the front baffle. The sixth folding plate 24 can pass through the square groove 34 on the front baffle 3. At the same time, this embodiment also provides a through hole 25 on the sixth folding plate 24, which can cooperate with the padlock 6. When the sixth folding plate 24 passes through the square groove 34, the through hole 25 is located on the outside of the fourth folding plate 38, so that the padlock 6 can pass through the through hole 25 to lock the front baffle 3, and two movable padlocks 6 can be installed to realize the authority management of the operator, further avoid the misoperation of the miniature circuit breaker 4, so as to improve the protection performance and safety factor of the circuit, thereby ensuring the power safety of the power supply circuit.

[0032] Furthermore, a limiting block 22 is provided at the top of the middle end of each of the left baffle 1 and the right baffle 2 .

[0033] In this embodiment, by installing limiting blocks 22 on the top of the middle ends of the left baffle 1 and the right baffle 2, the miniature circuit breaker 4 is further limited during installation to facilitate the installation of the entire device.

[0034] When in use, the front baffle 3 is in a vertical downward open state. At this time, the operating handle 41 of the miniature circuit breaker 4 can be operated in the closing position or the opening position. After the closing operation is completed, the front baffle 3 is vertically closed upward, and the square groove 34 on the fourth folding plate 38 passes through the sixth folding plate 24 to protect the operating handle 41 on the miniature circuit breaker 4 to avoid misoperation by the staff, thereby improving the protection performance and safety factor of the circuit, thereby ensuring the power safety of the power supply circuit and avoiding economic losses caused by misoperation. After the four folding plates 38 are opened, the through hole 25 on the sixth folding plate 24 is located on the outside of the fourth folding plate 38. The padlock 6 is installed so that the padlock 6 passes through the through hole 25 and is installed on the sixth folding plate 24, locking the front baffle 3 so that the front baffle 3 can no longer be opened vertically downward, further avoiding misoperation of the miniature circuit breaker 4. It should be noted that the front baffle 3 has an overall arched structure so that the front baffle 3 will not affect the movement of the operating handle 41 from the closing position to the tripping position or the opening position when in the closed state, thereby ensuring the normal operation of the miniature circuit breaker 4.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A miniature circuit breaker protection device, comprising a mounting rail (5), a miniature circuit breaker (4) being arranged on the mounting rail (5), and an operating handle (41) being arranged on the miniature circuit breaker (4), characterized in that: The invention also includes a left baffle (1), a right baffle (2), a connecting piece, a front baffle (3) and a padlock (6); the rear ends of the left baffle (1) and the right baffle (2) are both provided with a π-shaped groove (21); the left baffle (1) and the right baffle (2) are both provided on the mounting rail (5) through the π-shaped groove (21); the left baffle (1) and the right baffle (2) are respectively provided on the left and right sides of the miniature circuit breaker (4); the front baffle (3) is provided on the left baffle (1) and the right baffle (2) through the connecting piece for protecting the miniature circuit breaker; the padlock (6) is provided on the connecting piece for cooperating with the front baffle.

2. The miniature circuit breaker protection device according to claim 1, wherein: The connecting member comprises a first connecting plate (31), a second connecting plate (32), two rivet nuts (33), two countersunk circular holes (26) and two countersunk bolts (7); the first connecting plate (31) and the second connecting plate (32) are respectively arranged on the left and right sides of the bottom of the front baffle (3); the two rivet nuts (33) are respectively arranged on the inner sides of the first connecting plate (31) and the second connecting plate (32); the two countersunk circular holes (26) are respectively opened at the front bottom of the left baffle (1) and the right baffle (2); the two countersunk bolts (7) pass through the countersunk circular holes (26) and are respectively connected to the two rivet nuts (33).

3. The miniature circuit breaker protection device according to claim 2, wherein: The front baffle (3) comprises a first folding plate (35), a second folding plate (36), a third folding plate (37), a fourth folding plate (38) and a square groove (34); the first folding plate (35), the second folding plate (36), the third folding plate (37) and the fourth folding plate (38) are arranged in sequence to form an arch structure; the first connecting plate (31) and the second connecting plate (32) are respectively arranged on the left and right sides of the first folding plate (35); and the square groove (34) is opened on the fourth folding plate (38).

4. The miniature circuit breaker (4) protection device according to claim 3, characterized in that: The connecting member further comprises two fifth folding plates (23), two sixth folding plates (24) and a through hole (25). The two fifth folding plates (23) are respectively arranged at the front ends of the left baffle (1) and the right baffle (2). The two sixth folding plates (24) are respectively arranged on the two fifth folding plates (23). The fifth folding plates (23) and the sixth folding plates (24) form an "L"-shaped structure. The through hole (25) is opened on the sixth folding plate (24). The sixth folding plate (24) cooperates with the square groove (34), and the through hole (25) cooperates with the padlock (6).

5. The miniature circuit breaker protection device according to claim 1, wherein: Limiting blocks (22) are provided at the top of the middle ends of the left baffle (1) and the right baffle (2).

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