A handle for a circuit breaker
By using a detachable handpiece and handle body design, heat transfer is isolated by the gap, solving the problems of burns and insufficient insulation performance of circuit breaker handles, and achieving higher safety and connection reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SUONENG ELECTRIC GRP CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-19
AI Technical Summary
The handles of existing circuit breakers are prone to burns due to heat conduction during use, and their insulation performance is insufficient.
The handpiece and handle body are detachably connected, and heat transfer is isolated by the gap. The insulation performance and safety are improved by using high-insulation, low-thermal-conductivity materials and mechanical interlocking design.
It effectively isolates internal heat, reduces the risk of burns, improves insulation performance and operational safety, while ensuring reliable connection and ease of operation.
Smart Images
Figure CN224384225U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of circuit breakers, and more particularly to a handle for a circuit breaker. Background Technology
[0002] The handle of a circuit breaker is a manual operating component located outside the circuit breaker housing. It is linked to the contact assembly inside the circuit breaker housing through an internal mechanical transmission mechanism. The operator can directly drive the contacts to perform opening or closing actions by moving the handle.
[0003] In the existing technology, the handle of the circuit breaker is usually integrally molded by injection molding. In actual use, the heat inside the circuit breaker will be conducted to the handle, and the handle heats up quickly, which can easily cause injury to the operator. In addition, the insulation performance of the handle is generally poor. Utility Model Content
[0004] In order to improve the insulation performance and heat insulation effect of the circuit breaker handle, this application provides a circuit breaker handle.
[0005] This application provides a circuit breaker handle, which adopts the following technical solution:
[0006] A circuit breaker handle includes a handle body and a handpiece for an operator to hold, the handpiece being detachably connected to the handle body.
[0007] By adopting the above technical solution, the secondary combination of the handheld component and the handle body creates a gap between them, resulting in better insulation performance and improved operator safety. This eliminates the need for direct contact between the operator and the handle body, which is fixedly connected to the circuit breaker's heat conduction path, effectively isolating internal heat from the handheld area and reducing the risk of burns. The handle also experiences lower temperature rise. Furthermore, the detachable connection between the handheld component and the handle body allows for the use of specialized materials with high insulation and low thermal conductivity in the handheld component, specifically enhancing operational safety and insulation performance, and overcoming the inherent defects of the one-piece handles in the prior art.
[0008] Optionally, the handle body includes a mounting portion, and the handheld component has a mounting groove on its surface near the handle body for the mounting portion to be inserted.
[0009] By adopting the above technical solution, the plug-in structure of the mounting part and the mounting slot enables rapid pre-positioning of the handheld component and the handle body, ensuring precise alignment during connection and preventing assembly misalignment. This mechanical interlock design simplifies the disassembly process and provides a stable foundation for the subsequent fixing of the connection structure, improving connection reliability.
[0010] Optionally, the handheld component has a through hole, and the handle body has a threaded groove communicating with the through hole. The handheld component and the handle body are fixedly connected by a bolt assembly, the through hole, and the threaded groove.
[0011] By adopting the above technical solution, the connection method of the bolt assembly with through holes and threaded grooves provides strong mechanical fastening force while achieving detachability, and is easy to operate.
[0012] Optionally, a receiving groove is formed on the outer surface of the handheld component, and the through hole is formed on the bottom wall of the receiving groove. The receiving groove is used to conceal the part of the bolt assembly that protrudes through the through hole.
[0013] By adopting the above technical solution, the receiving groove houses the exposed bolt heads or nuts, eliminating the risk of accidental contact between hands and metal bolts during operation. The groove structure also prevents bolt protrusions from interfering with other components, improving overall equipment safety and reducing the possibility of external objects snagging and causing loose connections.
[0014] Optionally, the receiving groove extends along the arrangement direction of the handheld component and the handle body.
[0015] By adopting the above technical solution, compared to the extension direction of the receiving groove being perpendicular to the extension direction of the mounting groove, this design minimizes the width of the handheld component while completely concealing the bolt assembly, without affecting the normal opening and closing operation of the handle, and also reduces the space occupied. The handheld component can be made longer, making it more convenient for the operator to use.
[0016] Optionally, the depth of the receiving groove is greater than the depth of the mounting groove.
[0017] By adopting the above technical solution, the handheld component is made longer, so that the operator holds the part of the receiving slot without touching the part of the mounting slot as much as possible, thereby further improving the operator's operational safety.
[0018] Optionally, the handle body further includes a limiting part, the surface of which near the handpiece is a limiting surface, which is used to fit and abut against the opening surface of the mounting groove.
[0019] By adopting the above technical solution, the contact between the limiting surface and the end face of the mounting groove forms an axial stop, restricting the displacement of the handheld part along the insertion direction. This structure shares the axial load of the bolt and allows for better positioning of the handheld part during installation, preventing fretting wear at the insertion part during frequent operation, maintaining connection stability, and reducing the probability of bolt loosening.
[0020] Optionally, two opposing surfaces of the handheld component are provided with inclined contact surfaces. The distance between the two contact surfaces increases along the arrangement direction of the handle body and the handheld component. When the circuit breaker is in the open or closed state, the contact surfaces are used to fit and contact with the outer casing of the circuit breaker.
[0021] By adopting the above technical solution, the inclined contact surface forms a surface contact limit with the circuit breaker housing when opening / closing. The progressive damping effect is generated by the increasing spacing of the inclined surfaces, which not only buffers the impact force when the handle is in place, but also makes the width of the hand-held part slightly larger, making it more convenient for the operator to hold.
[0022] Optionally, the outer surface of the handheld component is provided with a plurality of anti-slip grooves, which are arranged along the arrangement direction of the handle body and the handheld component.
[0023] By adopting the above technical solution, the anti-slip grooves are arranged along the operating direction, increasing the coefficient of friction between the hand and the surface of the handpiece. The anti-slip grooves guide the direction of force application, preventing slippage in wet or oily environments, and ensuring operational effectiveness, especially in emergency tripping scenarios.
[0024] Optionally, the handle body includes a rotating part, and the rotating part is provided with a status indicator.
[0025] By adopting the above technical solution, the status indicator of the rotating part rotates synchronously with the handle movement, allowing the operator to directly observe the current on / off status of the circuit breaker. This design avoids misjudging the status due to viewing angle deviation and is especially suitable for scenarios with densely arranged multiple circuit breakers.
[0026] In summary, this application includes at least one of the following beneficial technical effects:
[0027] 1. Through the secondary combination of the handheld component and the handle body, there is a gap between the handheld component and the handle body, which makes the insulation performance of the handle better, effectively isolates the internal heat from being transferred to the handheld area, and improves the operator's operating safety.
[0028] 2. The plug-in structure of the mounting part and the mounting slot enables the handheld part and the handle body to be quickly pre-positioned, and provides a stable foundation support for the fixation of the subsequent connection structure, thereby improving the reliability of the connection;
[0029] 3. The receiving groove stores the exposed bolt head or nut inside, eliminating the risk of accidental contact between the hand and the metal bolt during operation. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the structure of this application.
[0031] Figure 2 This is a cross-sectional view of this application.
[0032] Figure 3 This is an exploded view of this application.
[0033] Explanation of reference numerals in the attached drawings: 1. Handle body; 11. Mounting part; 12. Threaded groove; 13. Limiting part; 131. Limiting surface; 14. Rotating part; 2. Handheld part; 21. Mounting groove; 22. Through hole; 23. Receiving groove; 24. Contact surface; 25. Anti-slip groove; 26. Connecting part; 27. Handheld part; 3. Status indicator. Detailed Implementation
[0034] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0035] This application discloses a handle for a circuit breaker. (Refer to...) Figure 1 The handle of the circuit breaker includes a handle body 1 and a handheld component 2. The handheld component 2 is for the operator to hold and is detachably connected to the handle body 1.
[0036] Reference Figure 2 and Figure 3 The handle body 1 and the handheld component 2 are arranged vertically, with the handle body 1 located below the handheld component 2. The handle body 1 includes a mounting portion 11 that extends vertically. The handheld component 2 includes a connecting portion 26, and a mounting groove 21 extending vertically for the mounting portion 11 to be inserted is formed on the lower surface of the connecting portion 26.
[0037] Reference Figure 2 and Figure 3 The handle body 1 also includes a limiting part 13, which is located below the mounting part 11, and the dimension of the limiting part 13 in the horizontal direction is larger than the dimension of the mounting part 11 in the horizontal direction. The upper surface of the limiting part 13 is a limiting surface 131. When the mounting part 11 is inserted into the mounting groove 21, the limiting surface 131 fits and abuts against the opening surface of the mounting groove 21 (i.e., the lower surface of the handheld part 2), thereby limiting the handheld part 2.
[0038] Reference Figure 2 and Figure 3 The handheld component 2 also includes a handheld part 27. A receiving groove 23 extending vertically is formed on the upper surface of the handheld part 27. The depth of the receiving groove 23 is greater than the depth of the mounting groove 21, meaning the length of the handheld part 27 is greater than the length of the connecting part 26. A through hole 22 communicating with the mounting groove 21 is formed on the bottom wall of the receiving groove 23. A threaded groove 12 communicating with the through hole 22 is formed on the upper surface of the mounting part 11. The handheld component 2 and the handle body 1 are fixedly connected by a bolt assembly, the through hole 22, and the threaded groove 12. In this embodiment, the bolt assembly includes a screw and a washer. The screw passes through the through hole 22 and is screwed into the threaded groove 12. The head of the screw and the washer are both concealed in the receiving groove 23.
[0039] In other embodiments, the receiving groove 23 may not be provided on the handheld component 2. In other embodiments, the through hole 22 and the threaded groove 12 may extend horizontally. In other embodiments, the mounting groove 21 may not be provided, and the handheld component 2 may be detachably connected directly to the mounting part 11, with specific connection structures respectively provided on the lower surface of the handheld component 2 and the upper surface of the handle body 1. In other embodiments, the handheld component 2 may be connected to the handle body 1 by snap-fit or adhesive bonding, etc.
[0040] Reference Figure 1 Multiple anti-slip grooves 25 are provided on both opposite surfaces of the handheld part 27. The anti-slip grooves 25 extend in the horizontal direction and are arranged in the vertical direction.
[0041] Reference Figure 1 On both opposite surfaces of the connecting portion 26, inclined contact surfaces 24 are formed, and the distance between the two contact surfaces 24 increases from bottom to top. When the circuit breaker is in the open or closed state, one of the contact surfaces 24 is used to abut against the circuit breaker housing.
[0042] Reference Figure 2 and Figure 3 The handle body 1 also includes a rotating part 14, which is arc-shaped and rotatably mounted on the circuit breaker housing. A status indicator 3 is provided on the upper surface of the rotating part 14 to indicate the circuit breaker's open / closed status. In this embodiment, the status indicator 3 is the words "ON" and "OFF" engraved on the upper surface of the rotating part 14. When the circuit breaker is in the closed state, the rotating part 14 rotates to "ON" to expose the circuit breaker housing, and "OFF" is obscured by the circuit breaker housing.
[0043] The installation principle of a circuit breaker handle according to an embodiment of this application is as follows: The mounting part 11 of the handle body 1 is inserted into the mounting groove 21 of the handheld part 2 until the lower surface of the handheld part 2 abuts against the upper surface of the limiting part 13, so that the handheld part 2 is fitted onto the mounting part 11. A screw and a washer are inserted into the receiving groove 23, so that the threaded part of the screw passes through the through hole 22 and is inserted into the threaded groove 12. The screw is then tightened using a screwdriver. This achieves the fixation of the handheld part 2 and the handle body 1.
[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A handle for a circuit breaker, comprising a handle body (1), characterized in that: It also includes a handheld part (2) for the operator to hold, the handheld part (2) being detachably connected to the handle body (1), the handle body (1) including a mounting part (11), the handheld part (2) having a mounting groove (21) for the mounting part (11) to be inserted on the surface of the handheld part (2) near the handle body (1), the handheld part (2) having a through hole (22), the handle body (1) having a threaded groove (12) communicating with the through hole (22), the handheld part (2) and the handle body (1) being fixedly connected by a bolt assembly, the through hole (22) and the threaded groove (12).
2. The handle of the circuit breaker according to claim 1, characterized in that: The outer surface of the handheld part (2) is provided with a receiving groove (23), and the perforation (22) is provided on the bottom wall of the receiving groove (23). The receiving groove (23) is used to hide the part of the bolt assembly that passes through the perforation (22).
3. The handle of the circuit breaker according to claim 2, characterized in that: The receiving groove (23) extends along the arrangement direction of the handheld part (2) and the handle body (1).
4. The handle of the circuit breaker according to claim 3, characterized in that: The depth of the receiving groove (23) is greater than the depth of the mounting groove (21).
5. The handle of the circuit breaker according to claim 1, characterized in that: The handle body (1) also includes a limiting part (13), the surface of the limiting part (13) near the handpiece (2) is a limiting surface (131), the limiting surface (131) is used to fit and abut against the opening surface of the mounting groove (21).
6. The handle of the circuit breaker according to claim 1, characterized in that: The two opposing surfaces of the handpiece (2) are provided with inclined contact surfaces (24). The distance between the two contact surfaces (24) increases along the arrangement direction of the handle body (1) and the handpiece (2). When the circuit breaker is in the open or closed state, the contact surfaces (24) are used to fit and contact with the outer shell of the circuit breaker.
7. The handle of the circuit breaker according to claim 1, characterized in that: Multiple anti-slip grooves (25) are provided on the outer surface of the handheld part (2), and the multiple anti-slip grooves (25) are arranged along the arrangement direction of the handle body (1) and the handheld part (2).
8. The handle of the circuit breaker according to claim 1, characterized in that: The handle body (1) includes a rotating part (14), and the rotating part (14) is provided with a status indicator (3).