Miniature circuit breaker convenient for wiring

Abstract

The utility model discloses a miniature circuit breaker convenient for wiring, which relates to the technical field of low-voltage electric appliances and comprises a circuit breaker outer shell, metal terminal chambers are respectively and fixedly connected inside the upper end and the lower end of the circuit breaker outer shell, and wire fixing assemblies convenient for wiring are arranged inside the metal terminal chambers. According to the miniature circuit breaker convenient for wiring, through the arrangement of the metal terminal chamber, the elliptical wire pressing block, the wrench handle, the wrench traction head, the anti-skid edge and the metal elastic sheet, when the miniature circuit breaker is used, a wire is inserted from the wire inlet hole, an installation person pushes the wrench traction head upwards, the wrench traction head drives the wrench handle to move upwards along the first wrench groove and the second wrench groove, the elliptical wire pressing block rotates, and the wire is inserted into the wire inlet hole; the tail end of a wire is pressed to the metal elastic piece, the metal elastic piece is stressed and contracted, the metal elastic piece and the oval wire pressing block jointly clamp a connector lug, the installation process is rapid, tools are not needed, the clamping force of the wire is consistent all the time, the function of facilitating wire connection is achieved, and the problem that the device does not have the function of facilitating wire connection is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, and particularly relates to a miniature circuit breaker convenient for wiring. Background Art

[0002] A miniature circuit breaker is an electromagnetic device mainly used for switching circuits. When the current passing through it exceeds the set value, the circuit is automatically opened. It can be manually switched on and off. It plays an important role in the power system and has the ability to quickly cut off the circuit to prevent accidents such as fires. Due to its low cost, it is widely used in families and enterprises.

[0003] Most of the common miniature circuit breakers on the market at present are similar in structure. Its interior mainly consists of an operating handle, an electromagnetic release, an arc extinguishing chamber, and a terminal chamber. Among them, the wiring terminal has a relatively simple structure. Metal frames are mostly used in combination with metal bolts to fix the wiring. The wiring is inserted into the opening of the terminal. The wiring personnel rotate the bolt on the terminal with a screwdriver, and the bolt presses against the wiring to complete the wiring. This wiring method is highly dependent on tools. If the corresponding screwdriver is missing during wiring, it is very difficult to carry out wiring. Moreover, the tightness of the bolt has a great influence on the firmness of the wiring. When the bolt is not fully tightened, the wiring is likely to fall off, and it does not have the function of being convenient for wiring.

[0004] Now, a new type of miniature circuit breaker convenient for wiring is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a miniature circuit breaker convenient for wiring, so as to solve the problem of not having the function of being convenient for wiring proposed in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A miniature circuit breaker convenient for wiring, including a circuit breaker outer casing, metal terminal chambers are respectively fixedly connected to the inner parts of the upper and lower ends of the circuit breaker outer casing, a metal connector is welded to one end of the metal terminal chamber close to the circuit breaker outer casing, a circuit breaker operating handle is movably connected to the middle position on the left side of the circuit breaker outer casing, a circuit breaker mounting plate is fixedly connected to the right side of the circuit breaker outer casing, a slide rail slot is arranged at the middle position on the right side of the circuit breaker mounting plate, and a wire fixing component convenient for wiring is arranged inside the metal terminal chamber.

[0007] The wire fixing assembly includes a second wrench slot, which is arranged on the left side of the metal terminal chamber. The upper and lower ends of the left side of the circuit breaker housing are respectively provided with a first wrench slot. The right side of the end of the metal terminal chamber far from the circuit breaker housing is provided with a wire inlet hole. An elliptical wire pressing block is movably connected between the front and rear ends inside the metal terminal chamber. The left side of the elliptical wire pressing block is fixedly connected with a wrench handle. The left side of the wrench handle is adhesively connected with a wrench traction head. The left side of the wrench traction head is provided with multiple groups of anti-slip ridges. A metal elastic sheet is welded on the right side inside the metal terminal chamber.

[0008] Preferably, the positions of the first wrench slot and the second wrench slot correspond one by one, and the interiors of the first wrench slot and the second wrench slot are connected.

[0009] Preferably, the wrench handle can swing up and down inside the first wrench slot and the second wrench slot, and the outer part of the elliptical wire pressing block is provided with fine sawteeth.

[0010] Preferably, the anti-slip ridges are arranged at equal intervals, and the metal elastic sheet has elasticity.

[0011] Preferably, a plastic housing is arranged above the circuit breaker operating handle. A micro buzzer is fixedly connected inside the top end of the left side of the plastic housing. A pressure sensor is arranged below the micro buzzer. A circuit board is fixedly connected on the right side inside the plastic housing. A control chip is fixedly connected at the middle position on the left side of the circuit board. A lithium battery is plugged at the front end on the left side of the circuit board. A Bluetooth connection module is welded on the top of the left side of the circuit board.

[0012] Preferably, when the circuit breaker operating handle is in the up-flipped state, it is in contact with the pressure sensor, and the micro buzzer, the pressure sensor and the circuit board are electrically connected.

[0013] Preferably, the upper and lower ends of the right side of the circuit breaker mounting plate are respectively provided with self-adhesive fixing plates. The upper and lower ends of the right side of the self-adhesive fixing plates are respectively plugged with fixing screws. The right side of the self-adhesive fixing plates is evenly coated with a self-adhesive coating. A release paper is affixed to the right side of the self-adhesive coating.

[0014] Preferably, the fixing screws penetrate through the interiors of the self-adhesive fixing plates and extend into the interior of the circuit breaker mounting plate, and the self-adhesive fixing plates are symmetrically distributed about the horizontal center line of the slide rail slot.

[0015] Compared with the prior art, the beneficial effects of the present utility model are: The mini circuit breaker facilitating wiring not only realizes the function of facilitating wiring, but also realizes the function of tripping reminder, and also realizes the function of facilitating independent fixed position;

[0016] (1) By providing a metal terminal chamber, a metal connector, a first wrench slot, a second wrench slot, an inlet hole, an elliptical pressure block, a wrench handle, a wrench traction head, anti-slip ridges, and a metal elastic sheet, during use, the wiring is directly inserted along the inlet hole on the metal terminal chamber. Taking the top wiring as an example, as the wiring is inserted through the inlet hole, the installer pushes up the wrench traction head, and the wrench traction head drives the wrench handle to move upward along the first wrench slot and the second wrench slot, causing the elliptical pressure block to rotate and pressing the end of the wiring against the metal elastic sheet. The metal elastic sheet contracts under force and jointly clamps the wiring head with the elliptical pressure block. The installation process is fast and does not require tools, and the clamping force of the wiring is always consistent, achieving the function of facilitating wiring;

[0017] (2) By providing a plastic housing, a micro buzzer, a pressure sensor, a circuit board, a control chip, a lithium battery, and a Bluetooth connection module, during use, when the circuit breaker is turned on, the operating handle of the circuit breaker is in an upward position, and the back of the operating handle of the circuit breaker fits against the pressure sensor. The pressure sensor senses the pressure. When the circuit breaker trips, the operating handle of the circuit breaker moves downward, and the pressure sensor no longer senses the pressure. The micro buzzer then starts to emit a beep to remind the user to check in time. The lithium battery on the circuit board powers the micro buzzer and the pressure sensor. The user can operate with a mobile phone through the Bluetooth connection module to check the remaining power of the lithium battery, etc., achieving the function of tripping reminder;

[0018] (3) By providing an adhesive fixing plate, fixing screws, an adhesive coating, and a release paper, during use, when the circuit breaker is assembled, it is usually clamped on the slide rail through the slide rail slot. When the circuit breaker works independently, the release paper on the back of the adhesive fixing plate can be torn off, and then the surface with the adhesive coating is pressed against the inner wall of the distribution box for convenient and quick installation. The fixing screws facilitate the removal and replacement of the adhesive fixing plate, achieving the function of facilitating independent fixing of the position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view structural schematic diagram of the present utility model;

[0020] Figure 2 is a front view sectional structural schematic diagram of the metal terminal chamber of the present utility model;

[0021] Figure 3 is a front view sectional structural schematic diagram of the wiring state of the metal terminal chamber of the present utility model;

[0022] Figure 4 is a top view structural schematic diagram of the metal terminal chamber of the present utility model;

[0023] Figure 5 is a side view partial sectional structural schematic diagram of the present utility model;

[0024] Figure 6This is a schematic diagram of the partial cross-sectional side view of the circuit breaker mounting plate of the present utility model.

[0025] In the figure: 1. Circuit breaker outer casing; 2. Metal terminal chamber; 3. Metal connector; 4. First wrench slot; 5. Second wrench slot; 6. Inlet hole; 7. Oval wire pressing block; 8. Wrench handle; 9. Wrench traction head; 10. Anti-slip ridges; 11. Metal spring piece; 12. Plastic casing; 13. Micro buzzer; 14. Pressure sensor; 15. Circuit board; 16. Control chip; 17. Lithium battery; 18. Bluetooth connection module; 19. Circuit breaker operating handle; 20. Circuit breaker mounting plate; 21. Slide rail card slot; 22. Adhesive fixing plate; 23. Fixing screw; 24. Adhesive coating; 25. Release paper. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1: Please refer to Figures 1-6 , a miniature circuit breaker convenient for wiring, including a circuit breaker outer casing 1. Metal terminal chambers 2 are fixedly connected to the inner parts of the upper and lower ends of the circuit breaker outer casing 1 respectively. A metal connector 3 is welded to one end of the metal terminal chamber 2 close to the circuit breaker outer casing 1. A circuit breaker operating handle 19 is movably connected to the middle position on the left side of the circuit breaker outer casing 1. A circuit breaker mounting plate 20 is fixedly connected to the right side of the circuit breaker outer casing 1. A slide rail card slot 21 is provided at the middle position on the right side of the circuit breaker mounting plate 20. A wire fixing component convenient for wiring is arranged inside the metal terminal chamber 2;

[0028] Please refer to Figures 1-6 , a miniature circuit breaker convenient for wiring further includes a wire fixing component. The wire fixing component includes a second wrench slot 5. The second wrench slot 5 is arranged on the left side of the metal terminal chamber 2. First wrench slots 4 are respectively arranged at the upper and lower ends on the left side of the circuit breaker outer casing 1. An inlet hole 6 is arranged on the right side of the end of the metal terminal chamber 2 far from the circuit breaker outer casing 1. An oval wire pressing block 7 is movably connected between the front and rear ends inside the metal terminal chamber 2. A wrench handle 8 is fixedly connected to the left side of the oval wire pressing block 7. A wrench traction head 9 is adhesively connected to the left side of the wrench handle 8. Multiple groups of anti-slip ridges 10 are arranged on the left side of the wrench traction head 9. A metal spring piece 11 is welded to the right side inside the metal terminal chamber 2;

[0029] The positions of the first wrench slot 4 and the second wrench slot 5 correspond one by one, and the interiors of the first wrench slot 4 and the second wrench slot 5 are connected. The wrench handle 8 can swing up and down along the interiors of the first wrench slot 4 and the second wrench slot 5. The outer part of the elliptical wire pressing block 7 is provided with fine serrations, the anti-slip edges 10 are arranged at equal intervals, and the metal elastic piece 11 has elasticity, which is convenient for quick wiring;

[0030] Specifically, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the wiring is inserted through the incoming wire hole 6. The installer pushes up the wrench towing head 9, and the wrench towing head 9 drives the wrench handle 8 to move up along the first wrench slot 4 and the second wrench slot 5. The elliptical wire pressing block 7 rotates, pressing the end of the wiring against the metal elastic piece 11. The metal elastic piece 11 contracts under force, and jointly clamps the wiring head with the elliptical wire pressing block 7. The installation process is fast and does not require tools, and the clamping force of the wiring is always consistent.

[0031] Embodiment 2: A plastic housing 12 is provided above the circuit breaker operating handle 19. A micro buzzer 13 is fixedly connected inside the left top end of the plastic housing 12. A pressure sensor 14 is provided below the micro buzzer 13. A circuit board 15 is fixedly connected to the right side inside the plastic housing 12. A control chip 16 is fixedly connected to the middle position on the left side of the circuit board 15. A lithium battery 17 is inserted into the front end on the left side of the circuit board 15. A Bluetooth connection module 18 is welded to the top on the left side of the circuit board 15. When the circuit breaker operating handle 19 is in the up-flipped state, it fits against the pressure sensor 14. The micro buzzer 13, the pressure sensor 14, and the circuit board 15 are electrically connected, and can quickly give feedback during tripping to remind the user to pay attention in time;

[0032] Specifically, as Figure 1 and Figure 5 shown, when the circuit breaker trips, the circuit breaker operating handle 19 moves downward, the pressure sensor 14 fails to sense pressure, and the micro buzzer 13 immediately starts to sound, reminding the user to check in time. The lithium battery 17 on the circuit board 15 powers the micro buzzer 13 and the pressure sensor 14. The user can operate through the Bluetooth connection module 18 with a mobile phone to check the remaining power of the lithium battery 17, etc.

[0033] Embodiment 3: Adhesive fixing plates 22 are respectively arranged at the upper and lower ends on the right side of the circuit breaker mounting plate 20. Fixing screws 23 are respectively inserted into the upper and lower ends on the right side of the adhesive fixing plates 22. The right side of the adhesive fixing plates 22 is evenly coated with an adhesive coating 24. A release paper 25 is applied to the right side of the adhesive coating 24. The fixing screws 23 penetrate through the interiors of the adhesive fixing plates 22 and extend into the interior of the circuit breaker mounting plate 20. The adhesive fixing plates 22 are symmetrically distributed about the horizontal center line of the slide rail slot 21, which is convenient for independent installation and fixation;

[0034] Specifically, as Figure 1 and Figure 6 shown, tear off the release paper 25 on the back of the self-adhesive fixing plate 22, then press the surface where the self-adhesive coating 24 is located against the inner wall of the distribution box for quick installation, and the fixing screw 23 facilitates the removal and replacement of the self-adhesive fixing plate 22.

[0035] Working principle: When the utility model is in use, first, the wiring is directly inserted along the inlet hole 6 on the metal terminal chamber 2. Taking the top wiring as an example, as the wiring is inserted from the inlet hole 6, the installer pushes up the wrench traction head 9, and the wrench traction head 9 drives the wrench handle 8 to move upward along the first wrench groove 4 and the second wrench groove 5, and the elliptical pressing block 7 rotates to press the end of the wiring towards the metal elastic sheet 11. The metal elastic sheet 11 is stressed and contracts, and jointly clamps the wiring head with the elliptical pressing block 7. The installation process is fast and does not require the aid of tools, and the clamping force of the wiring is always consistent. When the circuit breaker is turned on, the circuit breaker operating handle 19 is in an upward position, and the back of the circuit breaker operating handle 19 fits against the pressure sensor 14. The pressure sensor 14 senses the pressure. When the circuit breaker trips, the circuit breaker operating handle 19 moves downward, and the pressure sensor 14 no longer senses the pressure. Then the micro buzzer 13 starts to emit a beep to remind the user to check in time. The lithium battery 17 on the circuit board 15 powers the micro buzzer 13 and the pressure sensor 14. The user can operate the mobile phone through the Bluetooth connection module 18 to check the remaining power of the lithium battery 17, etc. When the circuit breaker is assembled, it is usually stuck on the slide rail through the slide rail card slot 21. When the circuit breaker works independently, the release paper 25 on the back of the self-adhesive fixing plate 22 can be torn off, and then the surface where the self-adhesive coating 24 is located is pressed against the inner wall of the distribution box for quick installation, and the fixing screw 23 facilitates the removal and replacement of the self-adhesive fixing plate 22.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A miniature circuit breaker that is easy to connect, comprising a circuit breaker outer shell (1), characterized in that: The upper and lower ends of the circuit breaker outer shell (1) are respectively fixedly connected to metal terminal chambers (2); a metal connector (3) is welded to one end of the metal terminal chamber (2) close to the circuit breaker outer shell (1); a circuit breaker operating handle (19) is movably connected to the middle position of the left side of the circuit breaker outer shell (1); a circuit breaker mounting plate (20) is fixedly connected to the right side of the circuit breaker outer shell (1); a slide rail slot (21) is provided at the middle position of the right side of the circuit breaker mounting plate (20); and a wire fixing assembly for facilitating wiring is provided inside the metal terminal chamber (2); The wire fixing assembly comprises a second wrench slot (5), the second wrench slot (5) being arranged on the left side of the metal terminal chamber (2), the first wrench slot (4) being arranged at the upper and lower ends of the left side of the circuit breaker outer shell (1), a wire entry hole (6) being arranged on the right side of one end of the metal terminal chamber (2) far from the circuit breaker outer shell (1), an elliptical wire pressing block (7) being movably connected between the front and rear ends inside the metal terminal chamber (2), a wrench handle (8) being fixedly connected to the left side of the elliptical wire pressing block (7), a wrench traction head (9) being glued to the left side of the wrench handle (8), a plurality of groups of anti-slip edges (10) being arranged on the left side of the wrench traction head (9), and a metal spring sheet (11) being welded to the right side inside the metal terminal chamber (2).

2. A miniature circuit breaker that is easy to connect according to claim 1, characterized in that: The positions of the first wrench groove (4) and the second wrench groove (5) correspond to each other, and the interiors of the first wrench groove (4) and the second wrench groove (5) are connected.

3. A miniature circuit breaker that is easy to connect according to claim 1, characterized in that: The wrench handle (8) can swing up and down along the inside of the first wrench groove (4) and the second wrench groove (5), and the outside of the elliptical wire pressing block (7) is provided with fine serrations.

4. The miniature circuit breaker for easy wiring according to claim 1, characterized in that: The anti-slip edges (10) are arranged at equal intervals, and the metal spring sheets (11) are elastic.

5. The miniature circuit breaker for easy wiring according to claim 1, characterized in that: A plastic housing (12) is arranged above the circuit breaker operating handle (19); a micro buzzer (13) is fixedly connected to the interior of the top left side of the plastic housing (12); a pressure sensor (14) is arranged below the micro buzzer (13); a circuit board (15) is fixedly connected to the right side of the interior of the plastic housing (12); a control chip (16) is fixedly connected to the middle position of the left side of the circuit board (15); a lithium battery (17) is plugged into the front end of the left side of the circuit board (15); and a Bluetooth connection module (18) is welded to the top of the left side of the circuit board (15).

6. A miniature circuit breaker that is easy to connect according to claim 5, characterized in that: The circuit breaker operating handle (19) fits the pressure sensor (14) when it is in an upward state, and the micro buzzer (13), the pressure sensor (14) and the circuit board (15) are electrically connected.

7. The miniature circuit breaker for easy wiring according to claim 1, characterized in that: The upper and lower ends of the right side of the circuit breaker mounting plate (20) are respectively provided with self-adhesive fixing plates (22), the upper and lower ends of the right side of the self-adhesive fixing plate (22) are respectively plugged with fixing screws (23), the right side of the self-adhesive fixing plate (22) is evenly coated with a self-adhesive coating (24), and the right side of the self-adhesive coating (24) is applied with release paper (25).

8. The miniature circuit breaker for easy wiring according to claim 7, characterized in that: The fixing screws (23) penetrate the interior of the self-adhesive fixing plate (22) and extend into the interior of the circuit breaker mounting plate (20); the self-adhesive fixing plate (22) is symmetrically distributed about the horizontal center line of the slide rail slot (21).

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