Locking device for switch
By designing the padlock structure of the bracket and locking plate, the existing switch handle locking device has solved the problem of many parts and inconvenient locking devices, and the simple locking of the operating handle is achieved in the state of closing and opening, improving safety and reducing costs.
Patent Information
- Application Number
- CN202422395267.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing switch handle locking device has many parts and is cumbersome to assemble, and can only be locked in one position or not universal, which affects safety and operational convenience.
A locking device including a bracket and a locking plate is designed. A padlock is provided on the bracket and a padlock is provided on the locking plate. The two-way locking of the operating handle is achieved through the padlock. The bracket and the locking plate are hinged by the mounting shaft and are equipped with reset elements to simplify the locking and unlocking operations.
It realizes simple and quick locking of the operating handle in the closed and open states, ensuring equipment safety and reliability, reducing manufacturing and use costs, and not affecting the appearance and use range of the switch.
Smart Images
Figure CN223155850U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and particularly relates to a locking device for a switch. Background Art
[0002] The switch used in the low-voltage distribution network is mainly used to distribute electric energy and protect the line and power supply equipment from the hazards of overload, undervoltage, short circuit, single-phase grounding and other faults, so as to ensure the safety of the power grid and equipment.
[0003] At present, the switch realizes the on-off function by operating the handle to open and close. During the use of the switch, in order to prevent the switch from being accidentally misoperated, affecting the on-off situation or endangering the lives of personnel during maintenance, it is particularly important to keep the position of the switch handle so that it cannot be misoperated.
[0004] In the prior art, a handle locking device is usually used to lock the handle of the switch in the on position or the off position to realize the function of maintaining the position of the handle. The existing handle locking devices generally have the following defects: First, there are many parts, and the assembly is cumbersome when combined with the switch, or the external shape of the switch needs to be changed when installing and fixing; it can only lock one position, or it is not universal when locking two positions, and the structural design is unreasonable.
[0005] In view of the above-mentioned existing technology, the applicant has made a beneficial design, and the technical solution to be introduced below is generated under this background. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a locking device for a switch, which has a simple and reasonable structure and convenient operation for locking and unlocking.
[0007] The purpose of the utility model is achieved in this way. A locking device for a switch, the switch includes an operating handle, and the locking device includes a bracket fixedly arranged on the switch and a locking plate rotatably arranged on the bracket. The locking plate is arranged on the moving path of the operating handle to lock the position of the operating handle. One side of the bracket is bent to form a bracket padlock part, and the side of the locking plate corresponding to the bracket is bent to form a locking plate padlock part. After the locking plate is flipped towards the bracket, the bracket padlock part and the locking plate padlock part overlap and align, and a padlock is used to lock the locking plate.
[0008] In one specific embodiment of the utility model, several first hanging holes are arranged on the bracket padlock part, and the same number of second hanging holes are arranged on the corresponding locking plate padlock part, and the first hanging holes and the second hanging holes are arranged in sequence and aligned.
[0009] In a specific embodiment of the present utility model, on the other side of the bracket that cooperates with the locking plate, a pair of bracket bending installation edges are formed by bending. Corresponding to the bracket bending installation edges, the locking plate is bent to form a pair of locking plate bending installation edges. An installation shaft passes through the bracket bending installation edges and the locking plate bending installation edges respectively, so that the locking plate is hinged on the installation shaft.
[0010] In another specific embodiment of the present utility model, the pair of locking plate bending installation edges are located inside the pair of bracket bending installation edges, and the locking plate is slidably arranged between the pair of bracket bending installation edges along the installation shaft.
[0011] In yet another specific embodiment of the present utility model, a locking portion is provided on the locking plate. When the switch is in the closed state, one side of the locking portion abuts against the operating handle, so that the operating handle is locked in the closed position; when the switch is in the open state, the other side of the locking portion abuts against the operating handle, so that the operating handle is locked in the open position.
[0012] In still another specific embodiment of the present utility model, a locking groove is provided on the locking portion. The bracket extends outward on the same side of the pair of bracket bending installation edges to form an extension portion, and a clamping foot that cooperates with the locking groove is formed on one side of the extension portion. In the unlocked state, the clamping foot is clamped on the edge of the locking groove to realize the limit locking of the locking plate in the unlocked state.
[0013] In still another specific embodiment of the present utility model, the bracket is fixed to the switch by screws. A handle relief hole is provided in the middle of the bracket, and the operating handle is located in the handle relief hole.
[0014] Due to the adoption of the above structure, compared with the prior art, the present utility model has the beneficial effects that it can be used for locking the operating handle of the switch in both the closed state and the open state, and the operations of locking and unlocking are very simple and fast. It can effectively maintain the open and closed positions of the switch handle, ensuring the safety and reliability during the operation, operation and maintenance of the equipment; the structure is simple and reasonable, and the installation is convenient. It can be directly connected and installed with the outer shell of the switch, without affecting the appearance of the switch and restricting its application range, effectively reducing the manufacturing and use costs of the switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic structural diagram of the present utility model;
[0016] Figure 2 It is a schematic structural diagram of the present utility model when a padlock is attached;
[0017] Figure 3 It is an assembly schematic diagram of the present utility model and the switch;
[0018] Figure 4 Structural schematic diagram when the locking switch of the present utility model is in the closing position;
[0019] Figure 5 Structural schematic diagram when the locking switch of the present utility model is in the opening position;
[0020] Figure 6 Structural schematic diagram when the locking switch of the present utility model is in the tripping position.
[0021] In the figure: 1. Switch, 11. Operating handle, 12. Handle moving groove, 2. Locking device, 21. Bracket, 211. Bracket bending installation edge, 212. Bracket locking part, 2121. First hanging hole, 213. Extension part, 214. Claw, 215. Handle relief opening, 216. Installation foot; 22. Locking plate, 221. Locking part, 2211. Locking groove, 222. Locking plate bending installation edge, 223. Locking plate locking part, 2231. Second hanging hole, 23. Installation shaft, 24. Reset element. Specific embodiments
[0022] The following describes in detail the specific embodiments of the present utility model in conjunction with the drawings. However, the description of the embodiments is not a limitation on the technical solution. Any change in form rather than in substance based on the concept of the present utility model should be regarded as the protection scope of the present utility model.
[0023] In the following description, any concepts related to directions (or orientations) such as up, down, left, right, front, and back are with respect to the position state of the figure being described, aiming to facilitate public understanding. Therefore, it cannot be understood as a special limitation on the technical solution provided by the present utility model.
[0024] Please refer to Figures 1 to 3 , the present utility model relates to a locking device for a switch. The switch 1 has an operating handle 11, and the operating handle 11 has a closing position and an opening position corresponding to the closing state and the opening state of the switch respectively. The locking device 2 is installed at a position matching the operating handle 11, and includes a bracket 21 fixedly arranged on the switch 1 and a locking plate 22 rotatably arranged on the bracket 21. A locking part 221 is provided on the locking plate 22. When the switch 1 is in the closing state, one side of the locking part 221 abuts against the operating handle 11, so that the operating handle 11 is locked in the closing position, as Figure 4 ; when the switch 1 needs to stop running or the line needs to be maintained, an opening operation is required. When the switch 1 is in the opening state, the other side of the locking part 221 abuts against the operating handle 11, so that the operating handle 11 is locked in the opening position, as Figure 5The bracket 21 is bent on one side to form a bracket padlock part 212. The locking plate 22 is bent on the side corresponding to the bracket 21 to form a locking plate padlock part 223. After the locking plate 22 is turned towards the bracket 21, the bracket padlock part 212 and the locking plate padlock part 223 overlap and align, and a padlock is used to lock the locking plate 22. The utility model not only has a simple structure, but also the operations of locking and unlocking are very simple and fast. A locking device 2 is used for locking both the open position and the closed position. Mainly during the maintenance of the distribution line load fault or the maintenance of the line, it can prevent personnel from misoperating to close and power on the switch product, thus avoiding unnecessary serious hazards. Furthermore, it ensures the personal safety of the maintenance or repair personnel and avoids damage to the load equipment.
[0025] Further, several first hanging holes 2121 are provided on the bracket padlock part 212, and the same number of second hanging holes 2231 are provided on the corresponding locking plate padlock part 223. The first hanging holes 2121 and the second hanging holes 2231 are arranged in alignment in sequence. In this embodiment, the number of the first hanging holes 2121 and the second hanging holes 2231 is three, and it can be adjusted according to the actual use situation.
[0026] Continue to see Figure 1 and Figure 2, Further, on the other side of the bracket 21 that cooperates with the locking plate 22, it extends outward and bends to form a pair of bracket bending mounting edges 211. The locking plate 22 bends correspondingly to the bracket bending mounting edges 211 to form a pair of locking plate bending mounting edges 222. The pair of locking plate bending mounting edges 222 are located inside the pair of bracket bending mounting edges 211. A mounting shaft 23 passes through the bracket bending mounting edges 211 and the locking plate bending mounting edges 222 respectively, so that the locking plate 22 is hinged on the mounting shaft 23 and is slidably arranged between the pair of bracket bending mounting edges 211 along the mounting shaft 23. Further, a locking groove 2211 is provided on the locking portion 221. The bracket 21 extends outward on the same side of the pair of bracket bending mounting edges 211 to form an extension portion 213, and a latch 214 that cooperates with the locking groove 221 is formed on one side of the extension portion 213. In the unlocked state, the latch 214 is clamped on the edge of the locking groove 221 to realize the limit locking of the locking plate 22 in the unlocked state. At this time, if it is necessary to lock the closing position of the operating handle 11, the operating handle 11 needs to be located in the locking groove 2211. Since the size of the opening of the locking groove 2211 will be adjusted according to actual needs, in order to ensure that the edge of the locking groove 2211 will not interfere with the operating handle 11, that is, to ensure that the operating handle 11 can smoothly enter the locking groove 2211, the locking plate 22 needs to be slidably arranged on the mounting shaft 23. Further, a reset element 24 is sleeved on the mounting shaft 23. Both sides of the reset element 24 abut against the bracket bending mounting edge 211 and the locking plate bending mounting edge 222 respectively, and are used for the locking plate 22 to return to the initial position in the unlocked state. The reset element 24 is usually a spring.
[0027] Further, Figure 6 As shown, the locking groove 2211 is opened large enough. At this time, when the switch 1 is in the open state, the other side of the locking portion 221 abuts against the operating handle 11, so that the operating handle 11 is locked in the open position; and when the switch 1 is in the closed state, if the switch 1 fails and trips, since the locking portion 221 no longer stops, the operating handle 11 can still move from the closed position to the tripping position, achieving the function of correctly indicating the tripping state of the switch.
[0028] Continue to see Figure 3 , and in combination with Figure 1, the switch 1 is provided with a handle moving groove 12 at a position corresponding to the operating handle 11. The bracket 21 is provided with a handle relief opening 215 in the middle, which is aligned and installed with the above-mentioned handle moving groove 12. The operating handle 11 is located in the handle relief opening 215. A pair of mounting feet 216 are provided on the upper side of the handle relief opening 215. The mounting feet 216 are fixedly connected to the boss on the edge of the handle moving groove 12 by screws. The locking device 2 can be directly installed on the outside of the switch 1, which will not affect the existing appearance of the switch product and limit its use range, and reduce the manufacturing and use costs of the switch product.
Claims
1. A locking device for a switch, the switch (1) comprising an operating handle (11), the locking device (2) comprising a bracket (21) fixedly arranged on the switch (1) and a locking plate (22) rotatably arranged on the bracket (21), the locking plate (22) being arranged on the moving path of the operating handle (11) so as to lock the position of the operating handle (11), characterized in that: One side of the described bracket (21) is bent to form a bracket padlock part (212). One side of the described locking plate (22) corresponding to the bracket (21) is bent to form a locking plate padlock part (223). After the locking plate (22) is flipped towards the bracket (21), the bracket padlock part (212) and the locking plate padlock part (223) overlap and align, and a padlock is used to lock the locking plate (22).
2. A locking device for a switch according to claim 1, characterized in that: Several first hanging holes (2121) are arranged on the described bracket padlock part (212), and correspondingly, the same number of second hanging holes (2231) are arranged on the locking plate padlock part (223). The first hanging holes (2121) and the second hanging holes (2231) are arranged in alignment in sequence.
3. A locking device for a switch according to claim 1, characterized in that: On the other side of the described bracket (21) that cooperates with the described locking plate (22), a pair of bracket bending mounting edges (211) are formed by bending. The locking plate (22) is bent corresponding to the bracket bending mounting edges (211) to form a pair of locking plate bending mounting edges (222). A mounting shaft (23) passes through the bracket bending mounting edges (211) and the locking plate bending mounting edges (222) respectively, so that the locking plate (22) is hinged on the mounting shaft (23).
4. A locking device for a switch according to claim 3, characterized in that: The pair of locking plate bending mounting edges (222) are located inside the pair of bracket bending mounting edges (211), and the locking plate (22) is slidably arranged between the pair of bracket bending mounting edges (211) along the mounting shaft (23).
5. A locking device for a switch according to claim 4, characterized in that: A locking part (221) is arranged on the locking plate (22). When the switch is in the closed state, one side of the locking part (221) abuts against the operating handle (11), so that the operating handle (11) is locked in the closed position; when the switch is in the open state, the other side of the locking part (221) abuts against the operating handle (11), so that the operating handle (11) is locked in the open position.
6. The locking device for a switch according to claim 5, characterized in that: A locking groove (2211) is arranged on the locking part (221). The bracket (21) extends outwards on the same side of the pair of bracket bending mounting edges (211) to form an extension part (213), and a clamping leg (214) that cooperates with the locking groove (2211) is formed on one side of the extension part (213). In the unlocked state, the clamping leg (214) is clamped on the edge of the locking groove (2211) to realize the limit locking of the locking plate (22) in the unlocked state.
7. A locking device for a switch according to claim 1, characterized in that: The bracket (21) is fixed to the switch (1) by screws. A handle relief hole (215) is formed in the middle of the bracket (21), and the operating handle (11) is located in the handle relief hole (215).