A circuit breaker

Abstract

This invention relates to the field of electrical equipment technology, specifically to a circuit breaker. The invention provides a circuit breaker including a housing, a guide assembly, and a crank mechanism. The housing has a first opening and a second opening that are connected and arranged at an included angle. The guide assembly is located within the second opening and includes a guide cavity and a limiting spring. The guide cavity guides the terminal of the conductor, and the limiting spring is located within the guide cavity and limits the terminal of the conductor. The crank mechanism includes a drive end and a working end connected to the drive end. The working end is located within the first opening and abuts against the guide assembly through the drive end. In this invention, the working end abuts against the guide assembly under the drive end, achieving a tighter fit between the guide assembly and the terminal of the conductor. This prevents the conductor from being squeezed apart or shifting under external force, thus avoiding loose connections and preventing the circuit breaker from burning out.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and more specifically, to a circuit breaker. Background Technology

[0002] As is commonly known, a circuit breaker is an electrical protection device used to protect load equipment and power lines when a fault current (such as a ground fault or short circuit) occurs. Circuit breakers are an important component of the electrical industry and have been widely used. When an electrical circuit is operating normally, a circuit breaker can achieve functions such as power outage, power supply, and circuit switching by closing or opening the circuit that supplies electrical energy. When an electrical circuit experiences abnormalities such as overload or short circuit, the circuit breaker will trip to disconnect the electrical circuit, preventing the safety of personnel and the normal operation of equipment from being endangered due to circuit faults.

[0003] Currently, when installing or replacing low-voltage circuit breakers, the insulation layer of the wire terminals is usually stripped to expose the conductor inside. The conductor is then inserted into the circuit breaker's socket and secured with screws. However, when tightening the screws, the conductor is easily pushed apart, resulting in an insecurely fixed conductor. Pulling the conductor can cause it to shift, leading to poor contact, increased circuit resistance, and excessive temperature rise. This can easily burn out the circuit breaker, posing a safety hazard. Summary of the Invention

[0004] Therefore, to address the problem that fixing conductors into the holes of circuit breakers with screws results in insecure fixing of the wires, which can easily lead to circuit breaker burnout, this invention provides a circuit breaker, the specific technical solution of which is as follows:

[0005] A circuit breaker includes a housing, a guide assembly, and a crank mechanism. The housing has a first opening and a second opening that are connected to each other and are arranged at an included angle. The guide assembly is located in the second opening and has a guide cavity and a limiting spring block. The guide cavity guides the terminal of the conductor, and the limiting spring block is located in the guide cavity and limits the terminal of the conductor. The crank mechanism includes a drive end and a working end connected to the drive end. The working end is located in the first opening and abuts against the guide assembly through the drive end.

[0006] The aforementioned circuit breaker features a first and a second interconnected opening, along with a guide assembly located within the second opening. The guide cavity of the guide assembly guides the wire terminal. A limiting spring block, also located within the guide cavity, limits the wire terminal. The crank mechanism includes a drive end and a working end connected to the drive end. The working end of the crank mechanism is located within the first opening. Driven by the drive end, the working end abuts against the guide assembly. This allows the wire terminal to enter through the second opening and then, guided by the guide cavity, proceed to the first opening. Simultaneously, the limiting spring block limits the wire terminal, ensuring that it does not loosen after moving to the limiting spring block under the guidance of the guide cavity. Then, driven by the drive end, the working end of the crank mechanism abuts against the guide assembly, enabling a tighter fit between the guide assembly and the wire terminal. This further prevents the wire from being squeezed apart or shifting under external force, thus avoiding loose connections and preventing damage to the circuit breaker and the wire.

[0007] Furthermore, the guide component is provided with a bayonet, which is located inside the second opening.

[0008] Furthermore, the working end includes a sliding seat, a locking head, and a guide seat. The locking head is located on the sliding seat, and the guide seat is slidably connected to the sliding seat. When the driving end drives the working end, the locking head is connected to the guide assembly.

[0009] Furthermore, the locking head is provided with a groove, which is connected to the guide assembly.

[0010] Furthermore, the drive end includes a fixed seat and a cam, the fixed seat is connected to the cam, and the cam is connected to the sliding seat.

[0011] Furthermore, the fixed base includes a rotating shaft, and the cam is connected to the rotating shaft.

[0012] Furthermore, the slide seat includes a rotating shaft, and the slide seat is connected to the guide seat through the rotating shaft.

[0013] Furthermore, a transmission frame connects the sliding seat and the cam.

[0014] Furthermore, the fixed seat and the guide seat are detachably installed from the housing.

[0015] Furthermore, a rotating handle is provided at one end of the rotating shaft. Attached Figure Description

[0016] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0017] Figure 1This is a schematic diagram of the structure of a circuit breaker according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the housing structure of a circuit breaker according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the crank mechanism structure of a circuit breaker according to an embodiment of the present invention;

[0020] Figure 4 This is a partial cross-sectional structural diagram of a circuit breaker according to an embodiment of the present invention;

[0021] Figure 5 This is a side view of the crank mechanism structure of a circuit breaker according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the locking hole structure of the crank mechanism of the circuit breaker according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the adjusting hole structure of the crank mechanism of the circuit breaker according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Housing; 11. First opening; 12. Second opening; 13. Guide assembly; 131. Guide cavity; 132. Bayonet; 1321. Inclined groove; 133. Limiting spring block; 134. Snap-fit ​​block; 2. Crank mechanism; 21. Sliding seat; 211. Snap-fit ​​head; 2111. Groove; 212. Rotating shaft; 22. Fixed seat; 221. Rotating shaft; 222. Snap-fit ​​pin; 223. Snap-fit ​​hole; 23. Cam; 231. Adjustment hole; 24. Guide seat; 25. Transmission frame; 26. Drive end; 27. Working end; 2211. Rotating handle; 3. Wire. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In this invention, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0030] like Figure 1-4 As shown, a circuit breaker according to an embodiment of the present invention includes a housing 1, a guide assembly 13, and a crank mechanism 2. The housing 1 is provided with a first opening 11 and a second opening 12 that are connected to each other, and the first opening 11 and the second opening 12 are arranged at an included angle. The guide assembly 13 is located in the second opening 12, and the guide assembly 13 is provided with a guide cavity 131 and a limiting spring block 133. The guide cavity 131 is used to guide the terminal of the wire 3, and the limiting spring block 133 is located in the guide cavity 131 and is used to limit the terminal of the wire 3. The crank mechanism 2 includes a drive end 26 and a working end 27 connected to the drive end 26. The working end 27 is disposed in the first opening 11, and the working end 27 abuts against the guide assembly 13 by the drive end 26.

[0031] The circuit breaker described above includes a first opening 11 and a second opening 12 that are connected to each other. A guide assembly 13 is located within the second opening 12. The guide cavity 131 of the guide assembly 13 guides the terminal of the conductor 3. A limiting spring 133 is located within the guide cavity 131 and limits the terminal of the conductor 3. The crank mechanism 2 includes a drive end 26 and a working end 27 connected to the drive end 26. The working end 27 of the crank mechanism 2 is located within the first opening 11. The working end 27 abuts against the guide assembly 13 through the drive end 26, allowing the terminal of the conductor 3 to enter through the second opening 12. Subsequently, the terminal of the conductor 3 is guided by the guide cavity 131 and moves to the guide cavity 131. At the same time, the limiting spring block 133 limits the terminal of the conductor 3 to ensure that the conductor 3 will not loosen after moving to the limiting spring block 133 under the guidance of the guide cavity 131. Then, the working end 27 of the crank mechanism 2 abuts against the guide assembly 13 under the drive end 26, so that the working end 27 can make the guide assembly 13 and the terminal of the conductor 3 fit more tightly. This further ensures that the conductor 3 will not be squeezed out or shifted in position under external force, which would lead to loose wiring, thereby avoiding damage to the circuit breaker and the conductor 3.

[0032] like Figure 1 , 4As shown, in one embodiment, the guide component 13 is provided with a bayonet 132, which is located inside the second opening 12. Preferably, the bayonet 132 is provided with a slanted groove 1321, which can guide the wire 3. The slanted groove 1321 is connected to the guide cavity 131. In this way, after the wire 3 enters from the second opening 12, it can enter the guide cavity 131 more conveniently under the guidance of the slanted groove 1321.

[0033] like Figure 1 , 4 As shown, preferably, the diameter of the first opening 11 is the same as the outer diameter of the working end 27. At the same time, the sliding seat 21 of the hole wall of the first opening 11 plays a guiding role. In this way, when the driving end 26 drives the working end 27, the sliding seat 21 of the working end 27 can slide in the first opening 11, thereby ensuring that the working end 27 will not have displacement deviation when driven by the driving end 26. This allows the sliding seat 21 of the working end 27 to accurately abut against the guide component 13, so that the guide component 13 and the wiring terminal of the wire 3 can be more closely matched.

[0034] like Figure 1 , 4 As shown, preferably, the guide component 13 is made of elastic material to improve the limiting effect of the limiting spring block 133 of the guide component 13 on the terminal of the wire 3, and to ensure that the wire 3 will not shift or loosen after the guide component 13 locks the terminal of the wire 3.

[0035] like Figure 1 , 4 As shown, in one specific embodiment, the limiting spring block 133 restricts the connection end of the wire 3. Specifically, the inner wall of the guide component 13 forms a barb with the limiting spring block 133, allowing the connection end of the wire 3 to easily enter the guide cavity 131 through the second opening 12 and the bayonet 132. At this time, the movement direction of the wire 3 is in the same direction as the placement direction of the limiting spring block 133. Therefore, the limiting spring block 133 only restricts the position of the connection end of the wire 3, so that the connection end of the wire 3 is on the center line of the second opening 12. When an external force pulls the wire 3, the connection end of the wire 3... The direction of movement is opposite to the placement direction of the limiting spring block 133. At this time, the limiting spring block 133 restricts the movement of the terminal of the wire 3, so that the wire 3 will not shift its position under the pull of external force, resulting in an unstable connection. That is, through the limiting spring block 133, the direction of movement of the terminal of the wire 3 can only be from the second opening 12 to the guide cavity 131. When the terminal of the wire 3 is pulled by external force, that is, the direction of movement of the terminal of the wire 3 is to move away from the guide cavity 131, the limiting spring block 133 can restrict the movement of the terminal of the wire 3.

[0036] like Figure 1 , 4As shown, preferably, the guide component 13 is provided with a snap-fit ​​block 134, which is located in the second opening 12. At the same time, the snap-fit ​​block 134 is snap-fitted to the housing 1. In this way, it can be ensured that after the wire 3 is locked to the guide component 13, neither the wire 3 nor the guide component 13 will shift in position under the pull of external force, which would result in the wiring being loose.

[0037] like Figure 3-4 As shown, in one embodiment, the working end 27 includes a sliding seat 21, a locking head 211, and a guide seat 24. The locking head 211 is located on the sliding seat 21, and the guide seat 24 is slidably connected to the sliding seat 21. When the driving end 26 drives the working end 27, the locking head 211 is connected to the guide component 13. Thus, when the driving end 26 drives the working end 27, the sliding seat 21 slides on the guide seat 24, and the locking head 211 on the sliding seat 21 is connected to the guide component 13, so that the locking head 211 can make the guide component 13 and the wiring terminal of the wire 3 fit more tightly.

[0038] like Figure 3-4 As shown, in one embodiment, the locking head 211 is provided with a groove 2111, which is connected to the guide component 13. Thus, by connecting the guide component 13 with the groove 2111, when the driving end 26 drives the working end 27, the guide component 13 and the wiring end of the wire 3 can be locked together, ensuring that the wire 3 will not be squeezed out or shifted under external force, resulting in loose wiring, thereby avoiding damage to the circuit breaker and the wire 3.

[0039] Preferably, a buffer pad (not shown in the figure) is provided in the groove 2111. The guide component 13 is easily damaged by the impact force generated when the groove 2111 of the locking head 211 contacts the guide component 13 under the drive of the drive end 26. By providing a buffer pad, the impact force of the groove 2111 of the locking head 211 can be reduced.

[0040] like Figure 4 As shown, preferably, the guide component 13 is provided with limit springs 133 at both ends along the length direction to enhance the limiting effect of the limit springs 133. After the guide component 13 locks the wiring end of the wire 3, the wire 3 will not deviate or loosen.

[0041] like Figure 3-4 As shown, in one embodiment, the drive end 26 includes a fixed seat 22 and a cam 23. The fixed seat 22 is connected to the cam 23, and the cam 23 is connected to the sliding seat 21. Thus, when the cam 23 on the fixed seat 22 is rotated, the cam 23 is connected to the sliding seat 21, thereby driving the movable sliding seat 21 to slide against the guide seat 24.

[0042] like Figure 3-4As shown, in one embodiment, the fixed seat 22 includes a rotating shaft 221, and the cam 23 is connected to the fixed seat 22 via the rotating shaft 221. The sliding seat 21 includes a rotating shaft 212, and the sliding seat 21 is connected to the rotating shaft 212. A transmission frame 25 is connected between the sliding seat 21 and the cam 23. A rotating handle 2211 is provided at one end of the rotating shaft 221. Thus, by rotating the rotating handle 2211, the cam 23 can be rotated. Furthermore, through the transmission frame 25 connecting the sliding seat 21 and the cam 23, the sliding seat 21 can slide against the guide seat 24. That is, rotating the rotating handle 2211 can cause the cam 23 to rotate, and at the same time, the cam 23 can drive the sliding seat 21 to move through the transmission frame 25.

[0043] like Figure 3-4 As shown, in one embodiment, the fixed seat 22 and the guide seat 24 are detachably installed on the housing 1. In this way, the fixed seat 22 and the guide seat 24 are both fixed relative to the housing 1. That is, when the rotating handle 2211 is rotated to make the cam 23 rotate, and the cam 23 drives the sliding seat 21 to move through the transmission frame 25, the fixed seat 22 and the guide seat 24 are both fixed relative to the housing 1, ensuring that the sliding seat 21 can accurately enter the first opening 11 for sliding under the guidance of the guide seat 24.

[0044] like Figure 3-4 As shown, in one specific embodiment, the fixed seat 22 includes a rotating shaft 221, and the cam 23 is connected to the fixed seat 22 via the rotating shaft 221. The sliding seat 21 includes a rotating shaft 212, and the sliding seat 21 is connected to the rotating shaft 212. A transmission frame 25 is connected between the sliding seat 21 and the cam 23. A rotating handle 2211 is provided at one end of the rotating shaft 221. Specifically, by rotating the rotating handle 2211, the cam 23 is connected to the rotating shaft 221, thereby causing the cam 23 to rotate. Because the transmission frame 25 is connected between the sliding seat 21 and the cam 23, when the cam 23 rotates, the cam 23 can drive the sliding seat 21 to move through the transmission frame 25. The sliding seat 21 is slidably connected to the guide seat 24, and the guide seat 24 can guide the sliding seat 21. When the cam 23 drives the sliding seat 21 to move through the transmission frame 25, the sliding seat 21 can slide horizontally with the guide seat 24.

[0045] like Figure 3-7As shown, preferably, the fixed base 22 is provided with a locking pin 222 and a locking hole 223, and the cam 23 is provided with an adjustment hole 231. The locking pin 222 can pass through the locking hole 223 and connect with the adjustment hole 231. In this way, after rotating the rotating handle 2211, the locking pin 222 can engage with the cam 23, thereby preventing the cam 23 from rotating. Furthermore, after the cam 23 drives the sliding seat 21 to move through the transmission frame 25, the locking pin 222 engages with the cam 23, and the sliding seat 21 will not move, that is, the position of the sliding seat 21 is fixed. If the sliding seat 21 abuts against the guide component 13 at this time, the sliding seat 21 and the guide component 13 will remain in abutting state, so that the guide component 13 and the terminal of the wire 3 will maintain a tight fit. This ensures that the wire 3 will not be squeezed out or shifted under external force, resulting in an unstable connection, thereby avoiding the effect of burning out the circuit breaker and the wire 3.

[0046] Working principle of this invention:

[0047] First, the terminal of wire 3 enters through the second opening 12. A guide component 13 is installed inside the second opening 12. The guide component 13 guides the terminal of wire 3, allowing it to easily enter the guide cavity 131 of the guide component 13. Specifically, the guide component 13 has a bayonet 132 with a groove 1321. The groove 1321 guides the wire 3 and communicates with the guide cavity 131, enabling the wire 3 to be guided by the groove 1321 of the bayonet 132 after entering through the second opening 12. The wire 3 can then be more easily inserted into the guide cavity 131. Next, the limiting spring block 133, located within the guide cavity 131, can limit the connection point of the wire 3. Once the connection point of the wire 3 reaches the limiting spring block 133, the limiting spring block 133 restricts the connection point of the wire 3, ensuring that the connection point of the wire 3 is on the center line of the second opening 12. This also prevents the wire 3 from shifting under external force, thus preventing insecure wiring. Then, by rotating the rotating handle 2211, the cam 23 connects to the rotating shaft 221, allowing the cam 23 to rotate. Through the sliding... A transmission frame 25 connects the moving seat 21 and the cam 23, allowing the cam 23 to rotate and drive the sliding seat 21 to move via the transmission frame 25. The sliding seat 21 is slidably connected to the guide seat 24, which also guides the sliding seat 21. When the cam 23 drives the sliding seat 21 via the transmission frame 25, the sliding seat 21 can slide horizontally with the guide seat 24, allowing it to enter the first opening 11. The wall of the first opening 11 then guides the sliding seat 21, ensuring the sliding seat 21... 1. It can accurately engage with the guide component 13, so that when the sliding seat 21 engages, the guide component 13 can be tightly fitted onto the wire 3. The guide component 13 can bind the wiring end of the wire 3, so that the guide component 13 and the wiring end of the wire 3 can fit more tightly. At this time, the locking pin 222 is passed through the locking hole 223 and engaged with the adjustment hole 231, so that the sliding seat 21 and the guide component 13 remain in an abutting state. This further ensures that the wire 3 will not be squeezed out or shifted under external force, which would lead to loose wiring and thus avoid burning out the circuit breaker and the wire 3.

[0048] When it is necessary to replace the terminal of the wire 3, simply pull the locking pin 222 to release the locking pin 222 from the locking state of the adjustment hole 231. At the same time, disassemble the fixing seat 22 and the guide seat 24 from the housing 1. Then, push the locking block 134 with the external long rod to release the locking block 134 from the housing 1. The terminal of the wire 3 and the guide assembly 13 can then be removed together. Then, cut the wire 3 at the second opening 12. The wire 3 can then be easily disassembled and assembled.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A circuit breaker, characterized in that, include: A housing having a first opening and a second opening that are connected to each other, the first opening and the second opening being arranged at an angle; A guide assembly is located within a second opening. The guide assembly contains a guide cavity and a limiting spring block. The guide cavity is used to guide the terminal of the wire, and the limiting spring block is located within the guide cavity and is used to limit the terminal of the wire. A crank mechanism, the crank mechanism including a drive end and a working end connected to the drive end, the working end being disposed in the first opening, the working end being driven by the drive end and abutting against the guide component; The guide component is provided with a bayonet, which is located in the second opening; the working end includes a sliding seat, a locking head, and a guide seat, the locking head is located on the sliding seat, and the guide seat is slidably connected to the sliding seat; when the driving end drives the working end, the locking head is connected to the guide component; the locking head is provided with a groove, which is connected to the guide component. The inner wall of the guide assembly forms a barb with the limiting spring block. The wire's terminal enters the guide cavity through the second opening and the bayonet. The direction of the wire's movement is the same as the placement direction of the limiting spring block, and the wire's terminal is located on the center line of the second opening. When an external force pulls the wire, the direction of the wire's movement is opposite to the placement direction of the limiting spring block, and the limiting spring block restricts the movement of the wire's terminal. When an external force pulls the wire's terminal, the wire's terminal moves away from the guide cavity.

2. The circuit breaker according to claim 1, characterized in that, The drive end includes a fixed base and a cam, the fixed base is connected to the cam, and the cam is connected to a sliding base.

3. The circuit breaker according to claim 2, characterized in that, The fixed base includes a rotating shaft, and the cam is connected to the fixed base through the rotating shaft.

4. The circuit breaker according to claim 3, characterized in that, The sliding seat includes a rotating shaft, and the sliding seat is connected to the rotating shaft.

5. The circuit breaker according to claim 4, characterized in that, A transmission frame connects the sliding seat and the cam.

6. The circuit breaker according to claim 4, characterized in that, The fixed seat and the guide seat are detachably installed on the housing.

7. The circuit breaker according to claim 3, characterized in that, A rotating handle is provided at one end of the rotating shaft.

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