Circuit protector with high stability

Abstract

The utility model provides a circuit protector with high stability, belonging to the technical field of circuit protection, the circuit protector with high stability comprises a housing, a pressing assembly and a disconnection assembly, the housing is a square structure, the pressing assembly is arranged in the housing, the top of the pressing assembly penetrates out of the housing, and the disconnection assembly is arranged in the housing. The bottom of the pressing assembly is in contact with the disconnection assembly, the disconnection assembly is transversely arranged in the shell, and the pressing assembly is used for achieving electric shock connection on the disconnection assembly through downward pressing; the pressing assembly comprises a pressing rod, a pushing piece and a limiting piece, the pressing rod is arranged in the limiting piece in a sleeving mode, the top of the pressing rod is fixedly connected with the pushing piece, the outer wall of the pushing piece and the inner wall of the limiting piece are arranged in a sliding mode, and the limiting piece is connected to the position of a center through hole in the top of the shell in a clamped mode; the circuit protector can solve the problems that an existing circuit protector can only adapt to a single plug-in mode and is prone to popping up in the using process, and stability is not enough.

Description

Technical Field

[0001] This utility model belongs to the field of circuit protection technology, and specifically relates to a circuit protector with high stability. Background Technology

[0002] A circuit protector is a device used to protect electrical equipment and circuits. It primarily monitors parameters such as current and voltage in the circuit to prevent damage to equipment or dangers such as fires caused by overcurrent, overvoltage, or short circuits. It is widely used for the protection and monitoring of three-phase motors and other electrical appliances in industries such as machinery, metallurgy, building materials, chemicals, and textiles. Most are used in sockets; however, when the equipment circuit requires control and overload protection functions, an overload protection switch needs to be installed between the socket and the equipment circuit.

[0003] Circuits have certain current and voltage limits during normal operation. Exceeding these safe limits (such as overload or short circuit) can cause wires or electrical equipment to overheat, become damaged, or even start a fire. Circuit protectors can disconnect the circuit in time when overcurrent or short circuits occur, thus avoiding these dangers. Electrical equipment typically has a certain operating voltage and current range; if the current or voltage exceeds the specified range, it may damage the equipment. Circuit protectors can effectively limit abnormal changes in current or voltage, ensuring that equipment is not damaged by electrical faults and extending its service life. Circuit overload, short circuit, or leakage are common causes of electrical fires. Circuit protectors, by monitoring parameters such as current and voltage, can cut off the power supply before danger occurs, thereby preventing fires and ensuring personal and property safety. Residual current devices (RCDs) can quickly disconnect the power supply when leakage occurs, preventing electric shock accidents. Especially in homes, factories, hospitals, and other places, leakage protection for electrical equipment and wiring is crucial, effectively protecting the personal safety of users. Circuit protectors can prevent equipment and wiring from being severely damaged due to faults. Without proper protection, equipment may fail due to excessive current or unstable voltage, leading to costly repairs and replacements. Circuit protectors can prevent these losses and reduce maintenance costs. In industrial and commercial applications, the stability of power systems is crucial for production and operation. Circuit protectors can respond promptly to various electrical faults, prevent fault propagation, ensure normal system operation, and reduce downtime.

[0004] Existing circuit protectors can only be adapted to a single plug-in method, and they are prone to popping out during use, resulting in insufficient stability. Utility Model Content

[0005] In view of this, the present invention provides a highly stable circuit protector that can solve the problems of existing circuit protectors being only compatible with a single plug-in method and being prone to popping out during use, resulting in insufficient stability.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a highly stable circuit protector, comprising a housing, a pressing component, and a disconnecting component. The housing has a square structure. The pressing component is disposed inside the housing, with its top protruding through the housing and its bottom contacting the disconnecting component. The disconnecting component is horizontally disposed inside the housing. The pressing component is used to connect the contacts on the disconnecting component by pressing down. The pressing component includes a pressing rod, a pushing member, and a limiting member. The pressing rod is sleeved inside the limiting member, and its top is fixedly connected to the pushing member. The outer wall of the pushing member is slidably disposed between the outer wall and the inner wall of the limiting member. The limiting member is engaged with the central through hole at the top of the housing.

[0008] Based on the above technical solution, the highly stable circuit protector of this utility model can be further improved as follows:

[0009] The housing and the pressing assembly have a through hole with a boss and a limiting platform inside. The boss and the limiting platform are arranged from bottom to bottom and are fixed to the side wall of the through hole in a circular structure. The bottom of the pressing rod has limiting blocks on both sides. The size of the limiting blocks is smaller than the diameter of the middle position of the boss, and is used to lock the bottom of the pressing rod under the boss.

[0010] A spring is provided between the bottom of the connection between the pressing rod and the pushing member and the inner wall of the limiting member.

[0011] Furthermore, two protrusions are provided at the bottom of the outer wall of the limiting member, and the protrusions allow the limiting member to move and be locked in the middle position between the boss and the limiting platform;

[0012] The outer wall of the limiting component is provided with threads.

[0013] Furthermore, the bottom of the pressing rod has a spherical structure to reduce damage to the contact spring.

[0014] Furthermore, the disconnection assembly includes a contact spring, a first pin, and a second pin. The contact spring and the first pin are fixed to the left and right sides inside the housing by bolts. The first pin has a stationary contact inside, and the contact spring has a moving contact on its top. The second pin is fixedly connected to the side of the contact spring away from the first pin.

[0015] The contact spring is provided with grooves at both ends to improve the tensile strength of the contact spring, thereby eliminating stress and preventing the risk of material failure due to metal fatigue during long-term use.

[0016] Furthermore, the first pin has a right-angle structure, and the second pin has a bent-angle structure.

[0017] Furthermore, the outer shell includes a rear shell, a front shell, and fixing bolts. The pressing assembly and the disconnecting assembly are both fixed to the rear shell on the side near the front shell. The rear shell and the front shell are fixedly connected by the fixing bolts; the fixing bolts include three bolts.

[0018] Compared with the prior art, the advantages of the highly stable circuit protector provided by this utility model are:

[0019] The housing has a square structure and serves as the main external frame of the circuit protector, protecting the internal components. The housing is made of robust materials, effectively resisting external impacts, dust, and other potential mechanical damage. The square design ensures a stable layout of all components within the protector while facilitating installation and circuit connection.

[0020] The pressing component is located inside the housing and extends beyond the top of the housing. Its main function is to connect the disconnector by pressing down. The top of the pressing rod is fixedly connected to the pusher, which pushes the disconnector. Limiting blocks on both sides of the bottom of the pressing rod can lock the boss, thus ensuring stable movement of the pressing rod inside the housing. This structure avoids accidental operation of the pressing component and improves safety and stability during use. The sliding arrangement between the outer wall of the pusher and the inner wall of the limiting component ensures smooth movement of the pressing component when pressed down, while reducing friction and wear and extending service life. The limiting component is fixed in place in the central through hole at the top of the housing, restricting the range of motion of the pressing component and ensuring that the pressing rod is not excessively pressed down, preventing damage to mechanical parts.

[0021] The movement of the pressing assembly is increased by the spring, providing greater operating space and flexibility. The cooperation between the contact spring and the stationary contact ensures reliable connection and disconnection of the circuit, reducing the risk of poor contact. The cooperation between the stationary contact and the moving contact forms a path for electrical connection or disconnection, improving the reliability of the circuit protection device.

[0022] The function of the disconnecting assembly is to control the connection and disconnection of the circuit, ensuring circuit safety. It includes a contact spring, a first pin, and a second pin. The contact spring is fixed inside the housing and connects to the circuit's contact point. A moving contact is located on the top of the contact spring, enabling contact or disconnection with the stationary contact. The grooved design at both ends of the contact spring enhances its tensile strength, preventing failure due to metal fatigue and ensuring reliability during long-term use. The first pin contains a stationary contact, and the second pin connects to the other end of the contact spring. The first pin has a right-angle structure, while the second pin has a bent-angle structure. This design helps improve contact stability and mechanical strength, preventing the pins from loosening or being damaged by external forces.

[0023] To improve the stability of the pressing component, a spring is incorporated at the connection between the pressing rod and the pusher. The spring provides elastic force, effectively preventing damage to the component from excessive pressing. Two protrusions on the outer wall of the limiting component ensure stable positioning of the pressing component within the housing, making the pressing process smoother and more controlled.

[0024] The housing consists of a front shell and a rear shell, which are connected by fixing bolts. The pressing assembly and disconnect assembly are fixed to the rear shell on the side near the front shell, ensuring a compact layout of the internal components. The design of the fixing bolts ensures a firm connection between the two parts of the housing, improving the compressive strength and durability of the protector. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of a highly stable circuit protector;

[0027] Figure 2 This is a schematic diagram of the disconnection assembly;

[0028] Figure 3 This is a schematic diagram of the outer shell structure;

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] 10. Outer shell; 101. Boss; 102. Limiting platform; 11. Rear shell; 12. Front shell; 13. Fixing bolt; 20. Pressing assembly; 21. Pressing rod; 22. Pushing component; 23. Limiting component; 30. Disconnection assembly; 31. Contact spring; 32. First pin; 33. Second pin. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0032] like Figure 1-3 The diagram shows a first embodiment of a highly stable circuit protector provided by this utility model. In this embodiment, it includes a housing 10, a pressing component 20, and a disconnecting component 30. The housing 10 has a square structure. The pressing component 20 is disposed inside the housing 10, with its top protruding through the housing 10 and its bottom contacting the disconnecting component 30. The disconnecting component 30 is horizontally disposed inside the housing 10. The pressing component 20 is used to connect the contacts on the disconnecting component 30 by pressing down. The pressing component 20 includes a pressing rod 21, a pushing member 22, and a limiting member 23. The pressing rod 21 is sleeved inside the limiting member 23, and its top is fixedly connected to the pushing member 22. The outer wall of the pushing member 22 is slidably disposed between the outer wall of the pushing member 22 and the inner wall of the limiting member 23. The limiting member 23 is engaged with the central through hole at the top of the housing 10.

[0033] In the above technical solution, the through hole in which the outer shell 10 and the pressing component 20 cooperate is provided with a boss 101 and a limiting platform 102. The boss 101 and the limiting platform 102 are arranged sequentially from bottom to bottom and are both fixed on the side wall of the through hole in a circular structure. Limiting blocks are provided on both sides of the bottom of the pressing rod 21. The size of the limiting blocks is smaller than the diameter of the middle position formed by the boss 101, and is used to lock the bottom of the pressing rod 21 under the boss 101 and move it.

[0034] A spring is provided between the bottom of the connection between the pressing rod 21 and the pushing member 22 and the inner wall of the limiting member 23.

[0035] like Figure 1-3 The diagram shows a second embodiment of a highly stable circuit protector provided by this utility model. In this embodiment, it includes a housing 10, a pressing component 20, and a disconnecting component 30. The housing 10 has a square structure. The pressing component 20 is disposed inside the housing 10, with its top protruding through the housing 10 and its bottom contacting the disconnecting component 30. The disconnecting component 30 is horizontally disposed inside the housing 10. The pressing component 20 is used to connect the contacts on the disconnecting component 30 by pressing down. The pressing component 20 includes a pressing rod 21, a pushing member 22, and a limiting member 23. The pressing rod 21 is sleeved inside the limiting member 23, and its top is fixedly connected to the pushing member 22. The outer wall of the pushing member 22 is slidably disposed between the outer wall of the pushing member 22 and the inner wall of the limiting member 23. The limiting member 23 is engaged with the central through hole at the top of the housing 10.

[0036] In the above technical solution, the through hole in which the outer shell 10 and the pressing component 20 cooperate is provided with a boss 101 and a limiting platform 102. The boss 101 and the limiting platform 102 are arranged sequentially from bottom to bottom and are both fixed on the side wall of the through hole in a circular structure. Limiting blocks are provided on both sides of the bottom of the pressing rod 21. The size of the limiting blocks is smaller than the diameter of the middle position formed by the boss 101, and is used to lock the bottom of the pressing rod 21 under the boss 101 and move it.

[0037] A spring is provided between the bottom of the connection between the pressing rod 21 and the pushing member 22 and the inner wall of the limiting member 23.

[0038] Furthermore, in the above technical solution, two protrusions are provided at the bottom of the outer wall of the limiting member 23, and the protrusions allow the limiting member 23 to move in the middle position between the boss 101 and the limiting platform 102.

[0039] The outer wall of the limiting member 23 is provided with threads.

[0040] Furthermore, in the above technical solution, the bottom of the pressing rod 21 is a spherical structure, which is used to reduce damage to the contact spring 31.

[0041] Furthermore, in the above technical solution, the disconnection assembly 30 includes a contact spring 31, a first pin 32, and a second pin 33. The contact spring 31 and the first pin 32 are fixed to the left and right sides inside the housing 10 by bolts. The first pin 32 has a stationary contact inside, and the contact spring 31 has a moving contact on its top. The second pin 33 is fixedly connected to the side of the contact spring 31 away from the first pin 32.

[0042] The two ends of the contact spring 31 are provided with grooves to improve the tensile strength of the contact spring 31 to eliminate stress and prevent the risk of material failure due to metal fatigue during long-term use.

[0043] Furthermore, in the above technical solution, the first pin 32 has a right-angle structure, and the second pin 33 has a bent-angle structure.

[0044] Furthermore, in the above technical solution, the outer shell 10 includes a rear shell 11, a front shell 12, and fixing bolts 13. The pressing component 20 and the disconnecting component 30 are both fixed on the side of the rear shell 11 near the front shell 12. The rear shell 11 and the front shell 12 are fixedly connected by fixing bolts 13. There are three fixing bolts 13.

[0045] Specifically, the principle of this utility model is as follows: In use, by pressing the pushing member 22, the pressing rod 21 moves downward inside the limiting member 23. The internal spring increases the pressing stroke. Pressing down the pressing rod 21 causes the spherical structure at the bottom to push the contact spring 31 to separate from the first pin 32. When the pressing stops, the pressing rod 21 re-contacts the first pin 32 through the spring's reset, ensuring the stability of the current. When the pressing assembly 20 is covered by foreign objects, the pressing rod 21 will push open the contact spring 31, causing the moving contact to separate from the stationary contact, disconnecting the power supply, protecting the circuit, and ensuring safety.

Claims

1. A circuit protector with high stability, characterized in that, The device includes a housing (10), a pressing assembly (20), and a disconnection assembly (30). The housing (10) has a square structure. The pressing assembly (20) is disposed inside the housing (10), with its top protruding through the housing (10) and its bottom contacting the disconnection assembly (30). The disconnection assembly (30) is horizontally disposed inside the housing (10). The pressing assembly (20) is used to connect the contacts on the disconnection assembly (30) by pressing down. The pressing assembly (20) includes a pressing rod (21), a pushing member (22), and a limiting member (23). The pressing rod (21) is sleeved inside the limiting member (23), and its top is fixedly connected to the pushing member (22). The outer wall of the pushing member (22) is slidably disposed between the outer wall of the pushing member (22) and the inner wall of the limiting member (23). The limiting member (23) is engaged with the central through hole at the top of the housing (10).

2. The circuit protector with high stability according to claim 1, characterized in that, The housing (10) and the pressing assembly (20) have a through hole with a boss (101) and a limiting platform (102) inside. The boss (101) and the limiting platform (102) are arranged from bottom to bottom and are fixed to the side wall of the through hole in a circular structure. The pressing rod (21) has limiting blocks on both sides at the bottom. The size of the limiting blocks is smaller than the diameter of the middle position formed by the boss (101) and is used to move the bottom of the pressing rod (21) under the boss (101). A spring is provided between the bottom position of the connection between the pressing rod (21) and the pushing member (22) and the inner wall of the limiting member (23).

3. The circuit protector with high stability according to claim 2, characterized in that, The bottom of the outer wall of the limiting member (23) is provided with two protrusions, which allow the limiting member (23) to move in the middle position between the boss (101) and the limiting platform (102); The outer wall of the limiting member (23) is provided with threads.

4. A highly stable circuit protector according to claim 3, characterized in that, The bottom of the pressing rod (21) is a spherical structure, which is used to reduce damage to the contact spring (31).

5. A highly stable circuit protector according to claim 4, characterized in that, The disconnection assembly (30) includes a contact spring (31), a first pin (32), and a second pin (33). The contact spring (31) and the first pin (32) are fixed to the left and right sides inside the housing (10) by bolts. The first pin (32) has a stationary contact inside, and the contact spring (31) has a moving contact on its top. The second pin (33) is fixedly connected to the side of the contact spring (31) away from the first pin (32). The contact spring (31) has grooves at both ends to improve the tensile strength of the contact spring (31) to eliminate stress and prevent the risk of material failure due to metal fatigue during long-term use.

6. A highly stable circuit protector according to claim 5, characterized in that, The first pin (32) has a right-angle structure, and the second pin (33) has a bent-angle structure.

7. A highly stable circuit protector according to claim 6, characterized in that, The outer shell (10) includes a rear shell (11), a front shell (12), and fixing bolts (13). The pressing assembly (20) and the disconnection assembly (30) are both fixed to the rear shell (11) on the side near the front shell (12). The rear shell (11) and the front shell (12) are fixedly connected by the fixing bolts (13). There are three fixing bolts (13).

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