Operating handle locking assembly and low-voltage distribution box

Abstract

The utility model belongs to the technical field of low-voltage distribution boxes, and discloses an operating handle locking assembly and a low-voltage distribution box. The operating handle locking assembly comprises a distribution box cover plate, the distribution box cover plate is provided with a travel avoiding window in a penetrating mode, and the travel avoiding window is used for allowing an operating handle of a circuit breaker to penetrate through and conduct opening and closing operation; one end of the bracket is rotationally connected to the outer wall surface of the distribution box cover plate, and the other end of the bracket is provided with a limiting part; and the stop plate is arranged on the distribution box cover plate, the support can be stopped on the stop plate, and the limiting part is used for enabling the operation handle to be in an opening state. According to the utility model, the opening and closing operation of the circuit breaker can be realized without opening a door, and when the circuit breaker is in an opening state, the circuit breaker is prevented from being closed again.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage distribution boxes, in particular to an operating handle locking component and a low-voltage distribution box. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and close, carry and disconnect current under abnormal circuit conditions within a specified time. A circuit breaker can be used to distribute electrical energy, and its function is equivalent to a combination of a fuse switch and an over-underheating relay. When in use, the circuit breaker is installed in the circuit breaker distribution box.

[0003] At present, the conventional component operations of the circuit breaker distribution box for outdoor use on the market are all operated with the door open. When the equipment needs to be inspected and maintained (opening and closing), on the one hand, the door opening operation method easily exposes the components in the entire distribution box as a whole, thereby increasing the probability of accidents; on the other hand, when the equipment is in the maintenance stage and the circuit breaker is in the open state, there is a risk of the circuit breaker being re-closed due to negligence of the workers. Utility Model Content

[0004] The utility model aims to provide an operating handle locking assembly and a low-voltage distribution box, which can realize the opening and closing operation of the circuit breaker without opening the door, and can effectively prevent the circuit breaker from being closed again when the circuit breaker is in the opening state.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Operating handle locking assembly, including:

[0007] A distribution box cover, wherein the distribution box cover is provided with a travel avoidance window, wherein the travel avoidance window is used for the operating handle of the circuit breaker to pass through and perform opening and closing operations;

[0008] A bracket, one end of which is rotatably connected to the distribution box cover, and the other end of which is provided with a limiting portion;

[0009] A stop plate is arranged on the cover plate of the distribution box, the bracket can be stopped on the stop plate, and the limiting part is used to put the operating handle in an open state.

[0010] As an optional solution for the operating handle locking assembly, a connecting plate is provided on the bracket, a first locking hole is provided on the connecting plate, a second locking hole is provided on the stop plate, the bracket abuts against the stop plate, the first locking hole and the second locking hole overlap and can allow a padlock to pass through and lock.

[0011] As an optional solution of the operating handle locking assembly, when the operating handle is in a closed state, the distance between the operating handle and the rotation axis of the bracket is a second distance value, and the distance between the limit portion and the rotation axis of the bracket is a first distance value, and the first distance value is equal to the second distance value.

[0012] As an optional solution for the operating handle locking assembly, the stop plate includes a first plate and a second plate, the first plate is provided with the second lock hole, the distribution box cover is provided with a strip socket, the first plate is inserted into the strip socket, and the second plate abuts against the rear wall of the distribution box cover.

[0013] As an optional solution for the operating handle locking assembly, the bracket includes a first flat plate, a folding plate and a second flat plate that are integrally connected, the first flat plate is rotatably connected to the distribution box cover, the second flat plate is spaced apart from the distribution box cover, and the limiting portion is provided at the end of the second flat plate.

[0014] As an optional solution for the operating handle locking assembly, the distribution box cover is provided with a through hole, the first flat plate is provided with a connecting hole, and a blind rivet is passed through the connecting hole and riveted to the through hole.

[0015] As an optional solution for the operating handle locking assembly, it also includes a washer, which is clamped between the first flat plate and the distribution box cover, and the blind rivet passes through the connecting hole and the washer in sequence and is riveted to the through hole.

[0016] As an optional solution for the operating handle locking assembly, a plurality of assembly holes are provided on the distribution box cover.

[0017] As an optional solution for the operating handle locking assembly, a protective edge is provided around the outer edge of the distribution box cover, and the protective edge extends in a direction away from the bracket.

[0018] As an optional solution for the operating handle locking assembly, the distribution box cover and the bracket are both made of metal or plastic.

[0019] A low-voltage distribution box comprises a box body, a circuit breaker and an operating handle locking assembly as described above, wherein the circuit breaker is arranged in the box body, the distribution box cover is arranged at the opening of the box body, and the operating handle of the circuit breaker extends out of the travel avoidance window.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The operating handle locking assembly provided by the utility model is used for assembling the distribution box cover plate to the box body of the low-voltage distribution box, and the circuit breaker is installed in the box body. When inspection and maintenance are required, there is no need to open the door for operation. By providing a travel avoidance window for the opening and closing operation of the operating handle on the distribution box cover plate, the opening and closing operation of the circuit breaker can be realized. The bracket and the stop plate are installed on the outer wall surface of the distribution box cover plate, wherein the bracket is rotatably connected with the distribution box cover plate. When the operating handle of the circuit breaker is in the opening state, the bracket abuts against the stop plate to limit the rotation of the bracket. At this time, the limit part of the bracket blocks the travel avoidance window, which hinders the space for the operating handle of the circuit breaker to move upward, so the circuit breaker cannot be closed, avoiding the danger of the circuit breaker being re-closed due to misoperation by negligent workers.

[0022] The low-voltage distribution box provided by the utility model can realize the opening and closing operation of the circuit breaker without opening the door, and when the circuit breaker is in the opening state, the circuit breaker is prevented from being closed again. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a circuit breaker of a low-voltage distribution box in an embodiment of the utility model in an open state;

[0024] Figure 2 It is a structural schematic diagram of a circuit breaker of a low-voltage distribution box in an embodiment of the utility model in a closed state;

[0025] Figure 3 It is a structural schematic diagram of the operating handle locking assembly in the embodiment of the utility model from a first viewing angle;

[0026] Figure 4 It is a structural schematic diagram of the operating handle locking assembly in the second viewing angle in the embodiment of the utility model;

[0027] Figure 5 It is an exploded schematic diagram of the operating handle locking assembly in the embodiment of the utility model;

[0028] Figure 6 It is a structural schematic diagram of the bracket and the connecting plate in the embodiment of the utility model;

[0029] Figure 7 It is a structural schematic diagram of a stop plate in an embodiment of the utility model.

[0030] In the figure:

[0031] 100. Operating handle;

[0032] 1. Distribution box cover; 2. Bracket; 3. Stop plate; 4. Connecting plate; 41. First lock hole; 5. Blind rivet; 6. Washer;

[0033] 11. Travel avoidance window; 12. Strip jack; 13. Through hole; 14. Assembly hole; 15. Protective edge;

[0034] 21. Limiting portion; 22. Connecting hole; 23. First flat plate; 24. Folding plate; 25. Second flat plate;

[0035] 31. First plate; 32. Second plate; 33. Second locking hole. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] In order to realize the opening and closing operation of the circuit breaker without opening the door, and to effectively prevent the circuit breaker from being re-closed when the circuit breaker is in the open state, this embodiment provides an operating handle locking assembly, which is combined with the following Figures 1 to 7 The specific contents of this embodiment are described in detail.

[0041] like Figures 1 to 5 As shown, the operating handle locking assembly includes a distribution box cover 1, a bracket 2 and a stop plate 3. A travel avoidance window 11 is provided through the distribution box cover 1, and the travel avoidance window 11 is used for the operating handle 100 of the circuit breaker to pass through and perform opening and closing operations. One end of the bracket 2 is rotatably connected to the outer wall surface of the distribution box cover 1, and the other end of the bracket 2 is provided with a limit portion 21. The stop plate 3 is provided on the outer wall surface of the distribution box cover 1, and the side wall surface of the bracket 2 can be stopped on the stop plate 3, and the limit portion 21 is used to keep the operating handle 100 in an open state.

[0042] In short, the operating handle locking assembly provided by the utility model, the distribution box cover 1 is used to be assembled on the box body of the low-voltage distribution box, and the circuit breaker is installed in the box body. When inspection and maintenance are required, there is no need to open the door for operation. By opening a travel avoidance window 11 for the opening and closing operation of the operating handle 100 on the distribution box cover 1, the opening and closing operation of the circuit breaker can be realized. The bracket 2 and the stop plate 3 are installed on the outer wall surface of the distribution box cover 1, wherein the bracket 2 is rotatably connected to the distribution box cover 1. When the operating handle 100 of the circuit breaker is in the open state, the bracket 2 abuts against the stop plate 3 to limit the rotation of the bracket 2. At this time, the limit portion 21 of the bracket 2 blocks the travel avoidance window 11, which hinders the space for the operating handle 100 of the circuit breaker to move upward, so the circuit breaker cannot be closed, avoiding the risk of the circuit breaker being re-closed due to misoperation by negligent workers. When the operating handle 100 of the circuit breaker is in the closed state, the limiting portion 21 abuts against the operating handle 100 , and the bracket 2 is separated from the stop plate 3 .

[0043] Preferably, if Figures 5 to 7 As shown, the bracket 2 is provided with a connecting plate 4, the connecting plate 4 is provided with a first lock hole 41, the stop plate 3 is provided with a second lock hole 33, the bracket 2 is in contact with the stop plate 3, the first lock hole 41 and the second lock hole 33 overlap and can allow a padlock to pass through and lock. When the circuit breaker is opened, the bracket 2 is in contact with the stop plate 3 (the bracket 2 is in a closed state), and the limit portion 21 is blocked at the travel avoidance window 11. At this time, the limit portion 21 of the bracket 2 blocks the space for the operating handle 100 of the circuit breaker to move upward, so the circuit breaker cannot be closed. The first lock hole 41 on the connecting plate 4 cooperates with the second lock hole 33 on the stop plate 3, and can be locked with an external padlock to prevent ordinary personnel from closing the circuit breaker by mistake, thereby protecting the safety of personnel.

[0044] Furthermore, when the operating handle 100 is in the closed state, the distance between the operating handle 100 and the rotation axis of the bracket 2 (i.e., the axis of the blind rivet 5) is the second distance value, and the distance between the limit portion 21 and the rotation axis of the bracket 2 (i.e., the axis of the blind rivet 5) is the first distance value, and the first distance value is equal to the second distance value. When the circuit breaker is closed, the limit portion 21 abuts against the operating handle 100, the bracket 2 is separated from the stop plate 3 (the bracket 2 is in the open state), and the operating handle 100 of the circuit breaker also hinders the closing of the bracket 2 and the stop plate 3, so that the two cannot be successfully locked, and the fault tripping is realized, which does not affect the normal operation of the circuit breaker.

[0045] In this embodiment, if Figure 6 As shown, the bracket 2 and the connecting plate 4 are an integrated structure.

[0046] Optionally, the bracket 2 is uniformly designed on the left side of the distribution box cover 1, which will not hinder the operation when the equipment is installed, and has better safety.

[0047] Specifically, Figure 4 , Figure 5 and Figure 7 As shown, the stop plate 3 includes a first plate 31 and a second plate 32, wherein the angle between the first plate 31 and the second plate 32 is 90 degrees. In this embodiment, the first plate 31 and the second plate 32 can be, but are not limited to, integrally formed, bent, or bonded. A second lock hole 33 is provided on the first plate 31, and the distribution box cover 1 is provided with a strip-shaped plug hole 12. The first plate 31 is inserted into the strip-shaped plug hole 12, and the inner surface of the second plate 32 abuts against the rear wall of the distribution box cover 1. Furthermore, the second plate 32 is welded or bonded to the rear wall of the distribution box cover 1.

[0048] Specifically, Figure 6 As shown, in this embodiment, the bracket 2 includes a first flat plate 23, a folding plate 24 and a second flat plate 25 which are connected in one piece. The first flat plate 23 is rotatably connected to the distribution box cover 1, the second flat plate 25 is spaced apart from the distribution box cover 1, and the limit portion 21 is provided at the end of the second flat plate 25. The folding plate 24 in the middle is bent in a direction away from the distribution box cover 1 to increase the spacing between the second flat plate 25 and the distribution box cover 1 to avoid friction during rotation.

[0049] Furthermore, if Figure 5 and Figure 6 As shown, the distribution box cover 1 is provided with a through hole 13, the first plate 23 is provided with a connecting hole 22, the blind rivet 5 is passed through the connecting hole 22 and riveted with the through hole 13, and the first plate 23 can rotate forward or reverse relative to the blind rivet 5. The blind rivet 5 is used for fixed installation, and has the characteristic of being rotatable, which meets the use requirements.

[0050] Preferably, if Figure 5and Figure 6 As shown, the operating handle locking assembly also includes a washer 6, which is sandwiched between the first flat plate 23 and the distribution box cover 1, and the blind rivet 5 passes through the connection hole 22 and the washer 6 in sequence and is riveted to the through hole 13. The additional washer 6 is used to increase the distance between the first flat plate 23 and the distribution box cover 1, and reduce the rotational friction, thereby reducing the wear of the first flat plate 23 and the distribution box cover 1.

[0051] Furthermore, if Figure 5 As shown, the distribution box cover 1 is provided with a plurality of assembly holes 14. When the distribution box cover 1 is assembled to the box body of the low-voltage distribution box, fasteners are used to pass through the assembly holes 14 to connect with the box body to ensure the stability of the connection between the distribution box cover 1 and the box body.

[0052] Furthermore, if Figure 4 and Figure 5 As shown, the outer edge of the distribution box cover 1 is circumferentially provided with a protective edge 15, and the protective edge 15 extends in a direction away from the bracket 2. When the distribution box cover 1 is assembled to the box body of the low-voltage distribution box, the protective edge 15 wraps the outer wall of the box body to prevent water vapor from entering the distribution box.

[0053] Exemplarily, the distribution box cover 1 and the bracket 2 are both made of metal or plastic, and an integrated molding process is used to improve the overall structural strength.

[0054] This embodiment also provides a low-voltage distribution box, which includes a box body, a circuit breaker and an operating handle locking assembly as described above. The circuit breaker is arranged in the box body, the distribution box cover 1 is arranged at the opening of the box body, and the operating handle 100 of the circuit breaker extends out of the travel avoidance window 11.

[0055] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Operating handle locking assembly, characterized in that: include: A distribution box cover (1), the distribution box cover (1) being provided with a travel avoidance window (11), the travel avoidance window (11) being used for allowing an operating handle (100) of a circuit breaker to pass through and perform opening and closing operations; A bracket (2), one end of the bracket (2) being rotatably connected to the distribution box cover (1), and the other end of the bracket (2) being provided with a limiting portion (21); A stop plate (3) is arranged on the cover plate of the distribution box, the bracket (2) can be stopped on the stop plate (3), and the limiting portion (21) is used to place the operating handle (100) in an open state.

2. The operating handle locking assembly according to claim 1, characterized in that: The bracket (2) is provided with a connecting plate (4), the connecting plate (4) is provided with a first locking hole (41), the stop plate (3) is provided with a second locking hole (33), the bracket (2) is in contact with the stop plate (3), the first locking hole (41) and the second locking hole (33) overlap and can allow a padlock to pass through and lock.

3. The operating handle locking assembly according to claim 2, characterized in that: When the operating handle (100) is in a closed state, the distance between the operating handle (100) and the rotation axis of the bracket (2) is a second distance value, and the distance between the limiting portion (21) and the rotation axis of the bracket (2) is a first distance value, and the first distance value is equal to the second distance value.

4. The operating handle locking assembly according to claim 2, characterized in that: The stop plate (3) comprises a first plate member (31) and a second plate member (32); the first plate member (31) is provided with the second lock hole (33); the distribution box cover (1) is provided with a strip-shaped insertion hole (12); the first plate member (31) is inserted into the strip-shaped insertion hole (12); and the second plate member (32) abuts against the rear wall surface of the distribution box cover (1).

5. The operating handle locking assembly according to claim 1, characterized in that: The bracket (2) comprises a first flat plate (23), a folding plate (24) and a second flat plate (25) which are integrally connected, the first flat plate (23) being rotatably connected to the distribution box cover plate (1), the second flat plate (25) being spaced apart from the distribution box cover plate (1), and the limiting portion (21) being arranged at the end of the second flat plate (25).

6. The operating handle locking assembly according to claim 5, characterized in that: The distribution box cover plate (1) is provided with a through hole (13), the first flat plate (23) is provided with a connecting hole (22), and a blind rivet (5) is passed through the connecting hole (22) and riveted to the through hole (13).

7. The operating handle locking assembly according to claim 6, characterized in that: It also includes a gasket (6), which is sandwiched between the first flat plate (23) and the distribution box cover (1), and the blind rivet (5) is sequentially passed through the connecting hole (22) and the gasket (6) and riveted to the through hole (13).

8. The operating handle locking assembly according to claim 1, characterized in that: The distribution box cover plate (1) is provided with a plurality of assembly holes (14).

9. The operating handle locking assembly according to claim 8, characterized in that: A protective edge (15) is provided around the outer edge of the distribution box cover (1), and the protective edge (15) extends in a direction away from the bracket (2).

10. Low voltage distribution box, characterized in that: It comprises a box, a circuit breaker and an operating handle locking assembly as claimed in any one of claims 1 to 9, wherein the circuit breaker is arranged in the box, the distribution box cover (1) is covered at the opening of the box, and the operating handle (100) of the circuit breaker extends out of the travel avoidance window (11).

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