Circuit breaker convenient to maintain

Abstract

The utility model relates to the technical field of electrical protection equipment, and discloses a circuit breaker convenient to maintain, which comprises a circuit breaker shell and at least one connecting piece, the circuit breaker shell is formed by splicing a shell I and a shell II, the shell II is provided with a locking part which is matched and locked with the connecting piece, the connecting piece penetrates through the shell I and the shell II, and the shell II is provided with a locking part which is matched and locked with the connecting piece. According to the utility model, through the rotation cooperation of the connecting piece and the locking part, the traditional bolt connection is replaced, the disassembly and assembly operation of the circuit breaker shell is greatly simplified, no tool is needed, the maintenance efficiency is improved, and the design of the groove and the through hole protects the connecting piece, prevents the exposed mistaken touch, and guides the accurate assembly. The locking portion is integrated in the groove, external protrusions are reduced, attractiveness and scratch resistance are achieved, rotation is converted into axial closing force through slope matching, and the shell is tightly attached.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical protection equipment, in particular to a circuit breaker which is easy to maintain. Background Art

[0002] As a core protection device in electrical systems, circuit breakers often have housings composed of multiple parts. Existing technology typically achieves this by bolting through screw holes on mating surfaces. This method, leveraging the bolt's preload, offers high connection strength and reliable sealing, making it suitable for complex operating conditions like short-circuit shocks and outdoor dust storms (such as the high-voltage DC environment of photovoltaic power plants). However, this multi-bolt connection structure presents significant limitations during maintenance: disassembly and assembly require individual bolt manipulation, which involves discrete and time-consuming steps and is tool-dependent. In outdoor scenarios, maintenance can be stalled due to bolt corrosion (caused by moisture and temperature fluctuations) or tool loss. Furthermore, outdoor scenarios like photovoltaics require more efficient circuit breaker maintenance (frequent cleaning of junction boxes and troubleshooting are required). The inefficient disassembly and assembly of traditional bolted structures further increases labor costs and delays in fault repair, making it difficult to meet the demands of efficient operation and maintenance. Utility Model Content

[0003] The utility model aims to solve the problems of the conventional circuit breaker in that the housing is complicated to disassemble and assemble and the maintenance efficiency is low.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A circuit breaker that is easy to maintain includes a circuit breaker housing and at least one connecting member. The circuit breaker housing is composed of a first shell and a second shell spliced ​​together. The second shell is provided with a locking portion that cooperates and locks with the connecting member. The connecting member passes through the first shell and the second shell and is locked with the locking portion by a rotational operation.

[0006] Preferably, both the shell 1 and the shell 2 are provided with grooves, and the grooves are provided with a through-hole 1 for the connector to pass through. The grooves provide a holding space for the connector to avoid accidental touch or collision damage caused by exposed components, and the through-hole 1 guides the connector to be accurately passed through.

[0007] Preferably, the locking portion is arranged in the groove of the second shell, and the locking portion is provided with a second perforation corresponding to the first perforation. The locking portion is integrated in the groove, reducing the external protrusion of the shell and improving the overall aesthetics and anti-scratch performance.

[0008] Preferably, the connecting member includes a connecting rod, a rotating head, a tensioning member and a locking block. The two ends of the connecting rod are respectively connected to the rotating head and the locking block. The tensioning member is sleeved on the connecting rod, and the user can rotate the connecting rod through the rotating head.

[0009] Preferably, the locking portion is provided with a first bevel, and the locking block is provided with a second bevel adapted to the first bevel. The cooperation between the first bevel and the second bevel can convert the rotational motion into an axial closing force, pulling the second shell and the first shell to close together.

[0010] Preferably, a positioning groove is provided on the inclined surface of the locking part, and a circumferential limit is formed when the locking block is rotated into the positioning groove. The locking structure of the positioning groove and the locking block can completely eliminate the risk of loosening under a vibration environment, and the "click" sound feedback makes the operation status visual, avoiding safety hazards caused by unlocking.

[0011] Preferably, the tensioning member includes a sheet body 1, a spring sheet and a sheet body 2 connected in sequence. The spring sheet is an elastic member when in use. The rigid support of the sheet body 1 and the sheet body 2 ensures that the spring sheet is evenly stressed.

[0012] Preferably, the turning head is located in a groove of the housing, the tensioning member is clamped between the turning head and the inner wall of the groove, and the top of the turning head can be designed as an inner hexagonal groove, which is compatible with tool operation and can be used to rotate the turning head using tools.

[0013] Preferably, there are a plurality of spring pieces distributed between the first sheet and the second sheet in an annular array. The annular array evenly distributes the elastic force of the spring pieces to avoid uneven force on the shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model replaces the traditional bolt connection through the rotational cooperation of the connecting piece and the locking part, greatly simplifying the disassembly and assembly of the circuit breaker housing, eliminating the need for tools and improving maintenance efficiency. The groove and perforation design protect the connecting piece, avoid accidental contact with exposure, and guide precise assembly. The locking part is integrated in the groove to reduce external protrusions, combining beauty and scratch resistance. The bevel cooperates to convert rotation into axial closing force, so that the housing fits tightly. The positioning groove and the locking block engage to prevent loosening, and the "click" sound feedback ensures that the lock is in place. The tensioning piece shrapnel compensates for thermal expansion and contraction to maintain a stable seal. The annular distribution shrapnel makes the force uniform, suitable for complex working conditions such as outdoor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2This is a structural view of the circuit breaker housing of the present utility model;

[0019] Figure 3 This is a view of the position of an upper groove of the housing of the present invention;

[0020] Figure 4 This is a view of the position of the second upper connection portion of the housing of the present invention;

[0021] Figure 5 This is a separate view of the connecting piece and the locking part of the utility model;

[0022] Figure 6 This is a structural view of the connector of the present utility model;

[0023] Figure 7 For the utility model Figure 2 Enlarged view at point A in the middle;

[0024] Figure 8 This is a structural view of the connection part of the utility model.

[0025] Explanation of the figure numbers: 1. Circuit breaker housing; 11. Housing 1; 12. Housing 2; 13. Groove; 14. Perforation 1; 15. Locking part; 151. Perforation 2; 152. Inclined surface 1; 153. Positioning groove; 2. Connecting piece; 21. Connecting rod; 22. Rotating head; 23. Tensioning piece; 231. Sheet 1; 232. Spring piece; 233. Sheet 2; 24. Locking block; 241. Inclined surface 2. DETAILED DESCRIPTION

[0026] The present invention is described in further detail below with reference to the accompanying drawings.

[0027] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0028] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0029] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0030] See also Figure 1-8 A circuit breaker that is easy to maintain includes a circuit breaker housing 1 and at least one connecting member 2. The circuit breaker housing 1 is composed of a shell 11 and a shell 2 12. The shell 2 12 is provided with a locking portion 15 that cooperates with the connecting member 2 and is locked. The connecting member 2 passes through the shell 1 11 and the shell 2 12 and is locked with the locking portion 15 through a rotation operation.

[0031] Both the housing 11 and the housing 2 12 are provided with a groove 13, and the groove 13 is provided with a through-hole 14 for the connector 2 to pass through. The groove 13 provides a storage space for the connector 2 to avoid accidental touch or collision damage caused by exposed components. The through-hole 14 guides the connector 2 to be accurately passed through.

[0032] The locking portion 15 is disposed in the groove 13 of the second housing 12. The locking portion 15 is provided with a second through-hole 151 corresponding to the first through-hole 14. The locking portion 15 is integrated into the groove 13 to reduce the external protrusion of the housing and improve the overall aesthetics and scratch resistance.

[0033] The connecting member 2 includes a connecting rod 21, a rotating head 22, a tensioning member 23 and a locking block 24. The two ends of the connecting rod 21 are respectively connected to the rotating head 22 and the locking block 24. The tensioning member 23 is sleeved on the connecting rod 21, and the rotating head 22 facilitates the user to rotate the connecting rod 21.

[0034] The locking portion 15 is provided with a bevel 152, and the locking block 24 is provided with a bevel 241 adapted to the bevel 152. The cooperation between the bevel 152 and the bevel 241 can convert the rotational motion into an axial closing force, pulling the shell 2 12 and the shell 1 11 to close together.

[0035] A positioning groove 153 is provided on the inclined surface 152 of the locking portion 15. When the locking block 24 rotates into the positioning groove 153, a circumferential limit is formed. The locking structure of the positioning groove 153 and the locking block 24 can completely eliminate the risk of loosening in a vibration environment. The "click" sound feedback makes the operation status visual, avoiding safety hazards caused by unlocking.

[0036] The tensioning member 23 includes a first sheet 231 , a spring piece 232 and a second sheet 233 connected in sequence. The spring piece 232 is an elastic member when in use. The rigid support of the first sheet 231 and the second sheet 233 ensures that the spring piece 232 is evenly stressed.

[0037] The rotating head 22 is located in the groove 13 of the housing 11, and the tensioning member 23 is clamped between the rotating head 22 and the inner wall of the groove 13. The top of the rotating head 22 can be designed as an inner hexagonal groove 13, which is compatible with tool operation and can be used to rotate the rotating head 22.

[0038] There are multiple spring pieces 232 distributed in a circular array between the first sheet 231 and the second sheet 233. The circular array evenly distributes the elastic force of the spring pieces 232 to prevent uneven force on the housing.

[0039] During assembly, the housing 11 and the housing 2 12 are butted together so that the grooves 13 and the perforations 14 correspond one to one. A nitrile rubber gasket can be placed between the butt joints to achieve sealing.

[0040] Then, insert the connector 2 and pass the locking block 24 of the connector 2 through the through-hole 14 of the first housing 11, the through-hole 14 of the second housing 12, and the through-hole 2 151 of the locking portion 15 in sequence until the second piece 233 contacts the inner wall of the groove 13 of the first housing 11. At this time, the tensioning member 23 is not compressed.

[0041] Locking operation:

[0042] Rotate the turret 22 90 degrees clockwise to drive the locking block 24 to rotate synchronously through the connecting rod 21. During the rotation, the second inclined surface 241 of the locking block 24 can fit with the first inclined surface 152 of the locking portion 15. The inclined surface transmission generates an axial closing force, pulling the second shell 12 closer to the first shell 11. At the same time, the spring piece 232 on the tensioning member 23 is compressed. When the turret 22 rotates to the extreme position, the locking block 24 is snapped into the positioning groove 153, producing a "click" sound, and the locking is completed.

[0043] Disassembly process:

[0044] Now use a tool to press the rotating head 22 toward the tensioning member 23. The spring piece 232 on the tensioning member 23 is compressed, causing the locking block 24 to disengage from the positioning groove 153. Then, rotate the rotating head 22 counterclockwise by 90 degrees. The second inclined surface 241 slides in the opposite direction along the first inclined surface 152. The closing force is released, and the spring piece 232 of the tensioning member 23 rebounds, pushing the housing 11 and the housing 2 12 apart. Pull out the connecting member 2, and the housing 11 and the housing 2 12 can be completely separated to perform internal maintenance.

[0045] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A circuit breaker that is easy to maintain, characterized in that: It comprises a circuit breaker housing (1) and at least one connecting member (2); The circuit breaker housing (1) is composed of a first shell (11) and a second shell (12) spliced ​​together. The second shell (12) is provided with a locking portion (15) that cooperates with and locks with the connecting piece (2). The connecting piece (2) passes through the first shell (11) and the second shell (12) and is locked with the locking portion (15) through a rotation operation.

2. A circuit breaker easy to maintain according to claim 1, characterized in that: The first shell (11) and the second shell (12) are both provided with a groove (13), and the groove (13) is provided with a through hole (14) for the connecting member (2) to pass through.

3. A circuit breaker easy to maintain according to claim 2, characterized in that: The locking portion (15) is arranged in the groove (13) of the second shell (12), and the locking portion (15) is provided with a second through-hole (151) corresponding to the first through-hole (14).

4. A circuit breaker easy to maintain according to claim 3, characterized in that: The connecting member (2) comprises a connecting rod (21), a rotating head (22), a tensioning member (23) and a locking block (24); the two ends of the connecting rod (21) are respectively connected to the rotating head (22) and the locking block (24); and the tensioning member (23) is sleeved on the connecting rod (21).

5. A circuit breaker easy to maintain according to claim 4, characterized in that: The locking portion (15) is provided with a first inclined surface (152), and the locking block (24) is provided with a second inclined surface (241) adapted to the first inclined surface (152).

6. A circuit breaker easy to maintain according to claim 5, characterized in that: A positioning groove (153) is provided on the inclined surface 1 (152) of the locking portion (15), and a circumferential limit is formed when the locking block (24) rotates into the positioning groove (153).

7. A circuit breaker easy to maintain according to claim 6, characterized in that: The tensioning member (23) comprises a sheet body 1 (231), a spring piece (232), and a sheet body 2 (233) connected in sequence, wherein the spring piece (232) is an elastic member when in use.

8. A circuit breaker easy to maintain according to claim 7, characterized in that: The rotating head (22) is located in the groove (13) of the housing (11), and the tensioning member (23) is clamped between the rotating head (22) and the inner wall of the groove (13).

9. A circuit breaker easy to maintain according to claim 8, characterized in that: The spring pieces (232) are provided in a plurality and distributed in a ring array between the first sheet (231) and the second sheet (233).

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