A miniature circuit breaker preventing wire disconnection
By combining the worm gear structure and the magnetic strip limit clamp, the problem of low efficiency and low stability in the anti-disconnection operation of miniature circuit breakers when connecting multiple wires is solved. It achieves efficient synchronous clamping and stable fixation of multiple wires, thus improving the anti-disconnection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KETAI ELECTRIC CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-26
AI Technical Summary
Existing miniature circuit breakers have low efficiency and instability in preventing disconnection when connecting multiple conductors, and are easily affected by the external environment, leading to conductor loosening.
The design combines a worm gear structure with a magnetic strip limit clamp. By rotating the knob, the worm gear meshes, enabling simultaneous clamping of multiple anti-disengagement clamps. The return spring and magnetic strip are used to fix the wire, enhancing stability.
It achieves efficient clamping and fixation of multiple wires simultaneously, improves the anti-detachment effect, prevents wires from loosening, and enhances stability and anti-detachment efficiency.
Smart Images
Figure CN224288190U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit breaker technology, specifically a miniature circuit breaker to prevent wires from falling off. Background Technology
[0002] Miniature circuit breakers are used for overload and short-circuit protection of circuits. They can also be used for infrequent switching of circuits under normal conditions. Miniature circuit breakers are mainly used in various places such as industrial, commercial, high-rise and residential buildings.
[0003] In the prior art, such as the miniature circuit breaker for preventing wire loosening proposed in patent application number "CN202222874729.4", the support plate is used in conjunction with the clamping assembly. Under the elastic force of the return spring A and the return spring B, the external wire inserted into the wire insertion hole of the circuit breaker body is clamped and fixed, which has a good anti-loosening protection effect.
[0004] However, in the aforementioned patent application, the set reset spring A and reset spring B, together with the clamping assembly, are used to clamp the wire to prevent it from loosening. However, when multiple wires need to be connected on a miniature circuit breaker, the anti-loosening operation can only be performed on multiple wires one by one, which is quite troublesome and results in low efficiency of the anti-loosening operation. In addition, the clamping and fixing is only achieved by the elastic force of the reset spring A and reset spring B, which is relatively simple and easily affected by the external environment. The clamping stability is not high, thus affecting the anti-loosening effect on the wire. Utility Model Content
[0005] The purpose of this invention is to provide a miniature circuit breaker that prevents wires from falling off, thereby solving the problems mentioned in the background art.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] A miniature circuit breaker for preventing wire detachment includes a circuit breaker body, a plurality of mounting holes on the upper surface of the circuit breaker body, a bracket fixedly mounted on the upper surface of the circuit breaker body, an anti-detachment mechanism provided on the outer side wall of the circuit breaker body near the upper end, a plurality of supporting mechanisms provided on the bracket, anti-detachment clips fixedly mounted on the upper surface of the circuit breaker body near the edges of the plurality of mounting holes, and a plurality of screws mounted on the outer side wall of the circuit breaker body.
[0008] The anti-detachment mechanism includes a housing, which is fixedly installed on the outer side wall of the circuit breaker body near the upper end. A long shaft is rotatably connected inside the housing, and several worm gears are fixedly installed on the outer wall of the long shaft. Several rotating shafts are rotatably connected to the top of the housing, and worm wheels are fixedly connected to the bottom ends of the rotating shafts. The worm wheels and worm gears are meshed with each other.
[0009] Preferably, a second anti-detachment clip is fixedly connected to the outer wall of the rotating shaft near the upper end, and the second anti-detachment clip cooperates with the first anti-detachment clip.
[0010] Preferably, a slide rod is fixedly installed on the outer wall of the outer shell, and an L-shaped sliding plate and a return spring are sleeved on the outside of the slide rod.
[0011] Preferably, a circular block is fixedly connected to one end of the long shaft and located on the outer side wall of the outer casing, and a knob is fixedly connected to one end of the circular block.
[0012] Preferably, the outer wall of the circular block is provided with a plurality of limiting grooves, and the limiting grooves are matched with one end of the L-shaped sliding plate.
[0013] Preferably, the supporting mechanism includes a fixed shaft, and a collar is sleeved on the outside of the fixed shaft near both ends. A connecting block is fixedly connected to the outer wall of each of the two collars, and a limit clamp is fixedly connected to the upper end of each of the two connecting blocks.
[0014] Preferably, a fixing ring is fixedly installed on the outside of the fixing shaft near the middle position, and two tension springs are sleeved on the outside of the fixing shaft and located between the two collars, with one end of each tension spring fixedly connected to the fixing ring and the other end of each tension spring fixedly connected to two connecting blocks respectively.
[0015] Magnetic strips are fixedly installed on the inner walls of both limiting clamps near one end, and the two magnetic strips cooperate with each other.
[0016] The beneficial effects of this utility model are:
[0017] 1. This utility model releases the circular block by moving the L-shaped sliding plate, and rotates the knob to rotate the circular block and the long shaft, thereby driving each worm gear, in conjunction with each worm wheel and the rotating shaft, to rotate each anti-detachment clip simultaneously. This causes each anti-detachment clip to lock onto the outside of the wire, and in conjunction with each anti-detachment clip, clamps and fixes multiple wires simultaneously. The position of the anti-detachment clip is fixed by a return spring in conjunction with the L-shaped sliding plate. Through the above operation, multiple wires can be clamped and fixed simultaneously, improving the efficiency of the anti-detachment operation. Furthermore, due to the characteristics of the worm gear and worm wheel, the worm wheel cannot rotate later, which can prevent the subsequent anti-detachment clips from rotating and loosening, thereby improving the anti-detachment effect on the wires.
[0018] 2. In this utility model, after the anti-detachment fixed wire is close to the connection end with the circuit breaker body, it is inserted between two limiting clips. Under the action of the rebound force of two tension springs, the two limiting clips can be driven to move closer to each other, and the two magnetic strips are attracted and fixed again. This allows the two limiting clips to support and fix the part of the wire close to the connection end with the circuit breaker body, preventing the connection end between the wire and the circuit breaker body from being pulled when connecting the other end of the wire later, thereby further preventing the wire from loosening. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the main body, mounting holes and screw of the circuit breaker of this utility model;
[0022] Figure 3 This is a partial structural schematic diagram of the present invention;
[0023] Figure 4 This is a schematic diagram of the structure of the worm gear, worm wheel, and knob in this utility model;
[0024] Figure 5 This is a schematic diagram of the limiting clamp and the fixed shaft in this utility model.
[0025] The attached figures are labeled as follows:
[0026] 1. Circuit breaker body; 2. Mounting hole; 3. Housing; 4. Bracket; 5. Anti-disengagement clip one; 6. Long shaft; 7. Worm gear; 8. Worm wheel; 9. Anti-disengagement clip two; 10. Rotating shaft; 11. Slide rod; 12. L-shaped sliding plate; 13. Circular block; 14. Knob; 15. Fixed shaft; 16. Collar; 17. Limiting clamp; 18. Tension spring; 19. Fixed ring; 20. Connecting block; 21. Magnetic strip; 22. Screw. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0028] A miniature circuit breaker to prevent wires from detaching, such as Figures 1-5 As shown, the circuit breaker includes a circuit breaker body 1. Several mounting holes 2 are provided on the upper surface of the circuit breaker body 1. A bracket 4 is fixedly mounted on the upper surface of the circuit breaker body 1. An anti-disengagement mechanism is provided on the outer wall of the circuit breaker body 1 near the upper end. Several supporting mechanisms are provided on the bracket 4. Anti-disengagement clips 5 are fixedly mounted on the upper surface of the circuit breaker body 1 near the edges of the mounting holes 2. Several screws 22 are mounted on the outer wall of the circuit breaker body 1. The anti-disengagement mechanism includes a housing 3, which is fixedly mounted on the outer wall of the circuit breaker body 1 near the upper end. A long shaft 6 is rotatably connected inside the housing 3. Several worm gears 7 are fixedly mounted on the outer wall of the long shaft 6. Several rotating shafts 10 are rotatably connected to the top of the housing 3. Worm wheels 8 are fixedly connected to the bottom of each of the rotating shafts 10, and the worm wheels 8 and worm gears 7 are meshed with each other.
[0029] A second anti-detachment clip 9 is fixedly connected to the outer wall of the rotating shaft 10 near the upper end, and the second anti-detachment clip 9 cooperates with the first anti-detachment clip 5. A slide rod 11 is fixedly installed on the outer wall of the outer shell 3. An L-shaped slide plate 12 and a return spring are sleeved on the outside of the slide rod 11. One end of the return spring is fixedly connected to the inner wall of the outer shell 3, and the other end of the return spring is fixedly connected to the L-shaped slide plate 12.
[0030] A circular block 13 is fixedly connected to one end of the long shaft 6 and located on the outer side wall of the outer casing 3. A knob 14 is fixedly connected to one end of the circular block 13. Several limiting grooves are opened on the outer side wall of the circular block 13, and the limiting grooves fit into one end of the L-shaped sliding plate 12.
[0031] In use, when connecting wires to this miniature circuit breaker, each wire is inserted into its respective mounting hole 2, and the wires are pressed and fixed by rotating the screw 22. This is existing technology and will not be described in detail here. After fixing, by moving the L-shaped slide plate 12 along the outside of the slide rod 11, one end of the L-shaped slide plate 12 is moved out of the limiting groove, releasing the fixation of the circular block 13. At this time, rotating the knob 14 causes the circular block 13 and the long shaft 6 to rotate, thereby causing each worm gear 7 to rotate simultaneously, which in turn causes each worm wheel 8 to rotate simultaneously. Each rotating shaft 10 follows the rotation of the worm wheel 8, thereby causing each anti-detachment clip 9 to rotate simultaneously, so that each anti-detachment clip 9 is locked onto the outside of the wire. Furthermore, in conjunction with each anti-detachment clip 5, multiple wires are simultaneously clamped and fixed. At this time, the L-shaped slide plate 12 is released, and under the action of the return spring, one end of the L-shaped slide plate 12 can be inserted into the corresponding fixing groove to fix the position of the circular block 13, thereby fixing the position of the long shaft 6 and each worm 7, thus fixing the position of the worm wheel 8 and the anti-detachment clip 9. Through the above operation, multiple wires can be clamped and fixed at the same time, improving the work efficiency of anti-detachment operation for each wire. Moreover, due to the characteristics of the worm 7 and the worm wheel 8, the worm wheel 8 cannot rotate later, which can prevent the anti-detachment clip 9 from rotating and loosening later, thereby improving the anti-detachment effect of the wires.
[0032] like Figure 1 and Figure 4 As shown, the supporting mechanism includes a fixed shaft 15. A collar 16 is sleeved on the outside of the fixed shaft 15 near both ends. A connecting block 20 is fixedly connected to the outer wall of each collar 16. A limit clamp 17 is fixedly connected to the upper end of each connecting block 20. The two limit clamps 17 cooperate with each other.
[0033] A fixing ring 19 is fixedly installed on the outside of the fixing shaft 15 near the middle. Two tension springs 18 are sleeved on the outside of the fixing shaft 15 and located between the two collars 16. One end of each tension spring 18 is fixedly connected to the fixing ring 19, and the other end of each tension spring 18 is fixedly connected to the two connecting blocks 20 respectively. Magnetic strips 21 are fixedly installed on the inner wall of each of the two limiting clamps 17 near one end. The two magnetic strips 21 cooperate with each other and attract each other under the action of magnetic attraction, which can fix one end of the two limiting clamps 17 together.
[0034] Specifically, the two limiting clamps 17 can be rotated via the collar 16 in conjunction with the fixed shaft 15, causing one end of the two limiting clamps 17 to separate and the two magnetic strips 21 to separate. The collar 16 rotates along the fixed shaft 15, causing the two connecting blocks 20 to press one end of the two tension springs 18 respectively, causing the two tension springs 18 to deform. At this time, the part of the wire that is fixed and close to the connection end with the circuit breaker body 1 is inserted into the position between the two limiting clamps 17. Then, the two limiting clamps 17 are released. Under the action of the rebound force of the two tension springs 18, the two limiting clamps 17 can be driven to move closer to each other, and the two magnetic strips 21 are attracted and fixed again. This allows the two limiting clamps 17 to support and fix the part of the wire that is close to the connection end with the circuit breaker body, preventing the connection end between the wire and the circuit breaker body 1 from being pulled when the other end of the wire is connected later, thereby further preventing the wire from coming loose.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A miniature circuit breaker for preventing conductor detachment, comprising a circuit breaker body (1), characterized in that, The upper surface of the circuit breaker body (1) is provided with several mounting holes (2), and a bracket (4) is fixedly installed on the upper surface of the circuit breaker body (1). An anti-detachment mechanism is provided on the outer side wall of the circuit breaker body (1) near the upper end. Several supporting mechanisms are provided on the bracket (4). Anti-detachment clips (5) are fixedly installed on the upper surface of the circuit breaker body (1) near the edges of several mounting holes (2). Several screws (22) are installed on the outer side wall of the circuit breaker body (1). The anti-detachment mechanism includes a housing (3), which is fixedly installed on the outer side wall of the circuit breaker body (1) near the upper end. A long shaft (6) is rotatably connected inside the housing (3). Several worm gears (7) are fixedly installed on the outer wall of the long shaft (6). Several rotating shafts (10) are rotatably connected to the top of the housing (3). A worm wheel (8) is fixedly connected to the bottom of each of the rotating shafts (10), and the worm wheel (8) and the worm gear (7) are meshed with each other.
2. The miniature circuit breaker for preventing conductor detachment according to claim 1, characterized in that, The outer wall of the rotating shaft (10) is fixedly connected to the upper end of the anti-detachment clip two (9), and the anti-detachment clip two (9) cooperates with the anti-detachment clip one (5).
3. A miniature circuit breaker for preventing conductor detachment according to claim 1, characterized in that, A slide rod (11) is fixedly installed on the outer wall of the outer shell (3), and an L-shaped slide plate (12) and a return spring are sleeved on the outside of the slide rod (11).
4. A miniature circuit breaker for preventing conductor detachment according to claim 1, characterized in that, A circular block (13) is fixedly connected to one end of the long shaft (6) and located on the outer side wall of the outer shell (3), and a knob (14) is fixedly connected to one end of the circular block (13).
5. A miniature circuit breaker for preventing conductor detachment according to claim 4, characterized in that, The outer wall of the circular block (13) is provided with several limiting grooves, and the limiting grooves are matched with one end of the L-shaped sliding plate (12).
6. A miniature circuit breaker for preventing conductor detachment according to claim 1, characterized in that, The supporting mechanism includes a fixed shaft (15), and a collar (16) is sleeved on both ends of the fixed shaft (15). A connecting block (20) is fixedly connected to the outer wall of each of the two collars (16), and a limit clamp (17) is fixedly connected to the upper end of each of the two connecting blocks (20).
7. A miniature circuit breaker for preventing conductor detachment according to claim 6, characterized in that, A fixing ring (19) is fixedly installed on the outside of the fixing shaft (15) near the middle position. Two tension springs (18) are sleeved on the outside of the fixing shaft (15) and located between the two collars (16). One end of each tension spring (18) is fixedly connected to the fixing ring (19), and the other end of each tension spring (18) is fixedly connected to two connecting blocks (20). Magnetic strips (21) are fixedly installed on the inner walls of the two limiting clamps (17) near one end, and the two magnetic strips (21) cooperate with each other.