Circuit breaker convenient to assemble

Abstract

The utility model discloses a circuit breaker convenient to assemble, which comprises a primary part and a secondary part, a clamping groove a and a clamping groove b are respectively arranged on two sides of a connecting surface of the primary part and the secondary part, and the clamping groove a and the clamping groove b are connected through a buckle; a plurality of rotating shafts are arranged at one end of the buckle, opening grooves are formed between the rotating shafts, a clamping column is arranged at the other end of the buckle, and a clamping part is arranged at the bottom end of the clamping column; rotating shaft grooves are formed in two side walls of the clamping groove b, a mounting groove is formed in the bottom surface of the clamping groove a, and a limiting bulge is arranged on the inner wall of the primary part close to the edge of the mounting groove. And the buckles are respectively clamped in the clamping grooves a of the primary part and the secondary part, so that rapid assembly of the primary part and the secondary part is realized, on-site tool-free disassembly and assembly are realized, and convenience and rapidness are realized.

Description

Technical Field

[0001] The utility model relates to the field of electric power distribution, in particular to a circuit breaker which is easy to assemble. Background Art

[0002] As a key equipment in the transmission and distribution network, circuit breakers are closely related to power supply reliability and have a significant impact on the safe operation of the power grid.

[0003] A circuit breaker consists of a primary section, which performs traditional switching functions, and a secondary section, centered around an information and control system. The secondary section provides basic short-circuit, overload, and leakage protection, and also enables data acquisition, transmission, and remote control. With the rapid development of computer and network technologies, the digitalization of power systems is becoming increasingly advanced, and circuit breakers are becoming increasingly versatile. User demands for circuit breaker functionality are constantly evolving with technological advancements. These varying functional requirements translate into different product configurations, specifically, differences in the configuration of the secondary section.

[0004] Chinese patent publication number CN206022257U, published on March 15, 2017, discloses a utility model entitled "Intelligent Earth Leakage Circuit Breaker". The application discloses an intelligent earth leakage circuit breaker, including a circuit breaker body and a controller body. The controller body includes a shell, a circuit board, and a control module. The side profile of the shell is adapted to the side profile of the circuit breaker body. The shell of the controller body is riveted to the right side of the circuit breaker body by rivets. The connection between the primary and secondary parts of the application is hard-connected using rivets. This means that if the user's needs are updated and the hardware of the secondary part is involved, the entire circuit breaker that meets the new needs can only be replaced. This wastes a lot of structural and hardware resources, as well as a lot of human resources, and increases costs. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a circuit breaker that is easy to assemble. By arranging snap-in slots on the primary and secondary parts, and side covers and flip covers on the secondary part, it is possible to replace or repair the secondary part without the aid of tools, thus realizing on-site tool-free disassembly and assembly, which is convenient and quick.

[0006] To achieve the above objectives, the present invention employs the following technical solutions: a circuit breaker that is easy to assemble, comprising a primary and a secondary part. A snap-fit ​​clamp is provided on either side of the interface between the primary and secondary parts, with a snap-fit ​​clamp provided. The snap-fit ​​clamp has a plurality of rotating shafts at one end, with open slots between the shafts. A snap-fit ​​clamp is provided at the other end, with a locking post at the bottom end having a locking portion. The walls of the snap-fit ​​clamp b are provided with rotating shaft grooves, the bottom surface of the snap-fit ​​clamp a is provided with a mounting groove, and a limiting protrusion is provided on the inner wall of the primary part near the edge of the mounting groove. The snap-fit ​​clamp is respectively engaged in the snap-fit ​​clamp a of the primary and secondary parts, enabling quick and convenient assembly of the primary and secondary parts.

[0007] Preferably, the clip shaft is rotatably mounted in the secondary section shaft slot, and the clip post is mounted in the primary section mounting slot. This improves the clip's stability and reliability, reduces the risk of the clip falling out due to vibration or external forces, and thus enhances the circuit breaker's safety and durability. When the secondary section needs to be replaced, the clip post can be easily and quickly removed from the primary section mounting slot.

[0008] Preferably, the cross section of the limiting protrusion is a right-angled trapezoid, with the lower corner close to the mounting slot. The right-angled trapezoidal limiting protrusion provides better mechanical support, reduces the shaking of the buckle in the mounting slot, ensures a tight fit between the buckle and the primary part, and improves assembly accuracy.

[0009] Preferably, the buckle engaging portion is in the shape of an inverted triangle and can be engaged with the limiting protrusion. The lower base angle of the limiting protrusion and the included angle between the short side of the engaging portion and the clamping column are the same. This design makes the fit between the buckle and the limiting protrusion more precise, reduces assembly errors, improves assembly efficiency and reliability, and also reduces the assembly difficulty for the operator.

[0010] Preferably, the top surface of the buckle is provided with a plurality of sawtooth-shaped protrusions. The buckle needs to be bent during assembly or disassembly, which reduces the possibility of breakage or damage during frequent assembly and disassembly, and improves the overall reliability and durability of the buckle.

[0011] Preferably, the buckle is provided with a limiting column on the side of the clamping column close to the rotating shaft, and the limiting column can be inserted into the primary part slot a. It is smoother when assembling or disassembling the buckle, and also plays a role in fixing the side plate of the secondary part.

[0012] Preferably, the primary part is provided with a plurality of pins on the interface surface, and the secondary part is provided with a plurality of sockets on the interface surface, wherein the pins can be inserted into the sockets. The socket pins play a guiding and limiting role, and are convenient for quick replacement and maintenance.

[0013] Preferably, the secondary housing includes a base and side covers. The side covers are provided with a plurality of retaining plates on the side proximal to the base, and a plurality of retaining grooves are provided on both sides of the secondary base, into which the retaining plates can be locked. The design of the retaining plates and retaining grooves enhances the structural stability of the secondary housing, prevents displacement of the side covers during assembly, ensures a tight fit and overall sealing of the housing, and facilitates assembly and disassembly of the secondary housing.

[0014] Preferably, the secondary section has a flap at the top, a U-shaped plate at one end of the flap near the base, and a U-shaped groove at one end of the secondary section's side cover near the flap, into which the U-shaped plate fits. The flap and U-shaped plate provide a convenient opening and closing mechanism, facilitating user access and maintenance of the secondary section's internal components. The U-shaped groove ensures the flap's stability and security, preventing the risk of accidental opening.

[0015] The beneficial effect of the utility model is that it provides a circuit breaker that is easy to assemble. By providing snap-fit ​​slots on the primary and secondary parts, and side covers and flip covers on the secondary part, it is possible to replace or repair the secondary part without the use of tools. If only the circuit board needs to be replaced, the secondary part can be easily disassembled and assembled on site. This achieves tool-free on-site disassembly and assembly, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a partial assembly diagram of the utility model.

[0017] Figure 2 This is the assembly drawing of the secondary part of the utility model.

[0018] Figure 3 This is the overall assembly drawing of the utility model.

[0019] Figure 4 It is a side view and a cross-sectional view along the AA direction of the present invention.

[0020] Figure 5 For this utility model Figure 4 Enlarged view of point B.

[0021] Figure 6 This is a schematic diagram of the buckle structure of the utility model.

[0022] Figure 7 It is a side view of the buckle of the present utility model.

[0023] Figure markings: 1: primary part; 1.1: slot a; 1.1.1: mounting slot; 1.1.2: limiting protrusion; 1.2: pin; 1.3: switch; 2: secondary part; 2.1: slot b; 2.1.1: shaft slot; 2.2: base; 2.2.1: limiting slot; 2.3: side cover; 2.3.1: socket; 2.3.2: limiting plate; 2.4: flip cover; 2.4.1: U-shaped plate; 3: buckle; 3.1: clamping column; 3.1.1: clamping column; 3.1.2: locking part; 3.2: shaft part; 3.2.1: shaft; 3.2.2: opening slot; 3.2.3: connecting block; 3.2.4: limiting column; 3.3: serrated protrusion. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] like Figure 1 、 Figure 2 and Figure 3As shown, a circuit breaker that is easy to assemble includes a primary part 1, a secondary part 2, and a snap-on structure 3. This design aims to provide a circuit breaker system that is easy to maintain and upgrade to adapt to the ever-changing needs of power systems and user-specific configuration requirements. The primary part 1, as the main structure of the circuit breaker, is responsible for switching and controlling the circuit. The entire structure is connected using rivets, which is not only durable but also able to withstand high current and voltage shocks. It includes a main body and a switch 1.3. The main body is rectangular and connects to the secondary part 2. Two pins 1.2 are provided in the middle of the connecting surface. These pins 1.2 are rectangular protrusions that not only guide and limit the connection and installation of the secondary part 2, but also ensure smoother insertion with the socket 2.3.1 of the secondary part 2. This design prevents offset during assembly of the primary part 1 and the secondary part 2, improving assembly accuracy and reliability. Slots a1.1 are provided on both sides of the interface. These slots a1.1 are used to connect and secure with slots b2.1 of the secondary part 2, and fast assembly and disassembly are achieved through snaps 3. The secondary part 2 has a control system and is the core structure of the circuit breaker. It has basic short-circuit, overload, and leakage protection, and can also realize functions such as data acquisition, transmission, and remote control. The configuration of the secondary part 2 can be customized according to user needs. It includes a base 2.2, side covers 2.3, and a flip cover 2.4. Two sockets 2.3.1 are provided in the middle of the interface with the primary part 1. The sockets 2.3.1 are rectangular slots with a length and width slightly larger than the length and width of the pins 1.2 of the primary part 1. This ensures that the pins 1.2 can be inserted into the sockets 2.3.1. They are used to provide guidance and limit for the installation of the secondary part 2, enhancing the stability of the connection. The base 2.2 and side cover 2.3 are secured together by a retaining plate 2.3.2 and a retaining groove 2.2.1, increasing the stability of the secondary section 2 housing and preventing the side cover 2.3 from shifting during assembly. Once connected, the side cover 2.3 is locked with a snap 3. This dual securing mechanism further enhances the stability and security of the connection. The flap 2.4 can also be freely opened using a U-shaped plate 2.4.1 and a U-shaped groove, enabling tool-free assembly and disassembly of the secondary section 2. When the user needs to update or repair the internal configuration of the secondary section 2, they can be easily disassembled and assembled on-site, allowing for tool-free replacement of the secondary section 2's internal wiring to meet upgrade requirements. This design significantly simplifies maintenance and upgrades, reducing both cost and time. Slots b 2.1 are located on either side of the connecting surface, corresponding to slots a 1.1 in the primary section 1. Slots a 1.1 and b 2.1 can be connected and secured with snaps 3, ensuring a more secure connection between the primary and secondary sections 1 and 2, while also facilitating quick disassembly and replacement.

[0026] The casing of the secondary part 2 is an important component of the circuit breaker. It not only protects the internal circuits and components, but also provides an interface for easy maintenance and upgrading. The casing consists of three main parts: the base 2.2, the side cover 2.3 and the top cover. These parts together form a sturdy and sealed protective cover. Two limit plates 2.3.2 are provided on the side of the side cover 2.3 close to the base 2.2. The limit plates 2.3.2 are rectangular and their planes coincide with the planes of the side cover 2.3. The base 2.2 is the foundation of the casing of the secondary part 2 and provides support and stability for the entire casing. Two limit slots 2.2.1 are provided on both sides of the base 2.2 of the secondary part 2. The limit slots 2.2.1 are rectangular and their width is slightly larger than the width of the limit plates 2.3.2. The limit plates 2.3.2 can be easily inserted into the limit slots 2.2.1 while ensuring a certain tightening force to fix the side cover 2.3 and ensure that the side cover 2.3 will not shift during the assembly process. The combination of the limiting plate 2.3.2 and the limiting groove 2.2.1 not only enhances the structural stability of the secondary part 2 housing, but also ensures a tight fit and overall sealing of the housing, preventing dust, moisture, and other external factors from interfering with the internal circuitry, and facilitating assembly and disassembly of the secondary part 2 housing. A flip cover 2.4 is provided at the top of the secondary part 2, allowing users to easily access the internal components of the secondary part 2 without having to disassemble the entire housing. Two U-shaped plates 2.4.1 are provided on the side end of the flip cover 2.4 near the base 2.2. These U-shaped plates 2.4.1 mate with the U-shaped grooves on the side end of the side cover 2.3 near the flip cover 2.4. The U-shaped plates 2.4.1 easily snap into the U-shaped grooves, providing a stable fixing mechanism that ensures the flip cover 2.4 remains closed when not in use, preventing accidental opening. The design of the flip cover 2.4 and U-shaped plates 2.4.1 provides a convenient opening and closing mechanism that not only facilitates user access and maintenance of the internal components of the secondary part 2 but also reduces the time and effort required for maintenance.

[0027] like Figure 4 and Figure 5As shown, the interface between the primary and secondary parts 1 and 2 is provided with a slot a1.1 and a slot b2.1, respectively. Slot a1.1 and slot b2.1 are connected by a buckle 3, enabling quick assembly and disassembly of the primary and secondary parts 1 and 2. The walls of slot b2.1 are provided with pivot slots 2.1.1 for mounting the pivot 3.2.1 of buckle 3. The size and shape of the pivot slots 2.1.1 precisely match those of the buckle 3, ensuring smooth rotation and securement of the buckle 3. A mounting slot 1.1.1 is provided on the bottom surface of slot a1.1, into which the post 3.1.1 and the stop post 3.2.4 of the buckle 3 can be inserted. A stop protrusion 1.1.2 is provided on the inner wall of the primary part 1, near the edge of the mounting slot 1.1.1, ensuring that the buckle 3 is securely fixed within slot a1.1 while allowing for quick disassembly when needed. The limiting protrusion 1.1.2 is located on the side of the installation groove 1.1.1 away from the secondary part 2. The cross-section of the limiting protrusion 1.1.2 is a right-angled trapezoid, with the lower base angle close to the installation groove 1.1.1. The two right angles are located on the inner wall of the primary part 1, and the upper and lower base angles are facing the interior of the primary part 1, providing a precise limiting point for the engaging portion 3.1.2 of the clip 3, ensuring that the engaging portion 3.1.2 of the clip 3 can be effectively limited to prevent displacement during operation. The right-angled trapezoidal limiting protrusion 1.1.2 provides better mechanical support, reduces the shaking of the clip 3 in the installation groove 1.1.1, ensures the close fit between the clip 3 and the primary part 1, thereby improving the accuracy of assembly and the stability of the overall structure. The clip 3 is respectively engaged in the slot a 1.1 of the primary part 1 and the slot b 2.1 of the secondary part 2, realizing rapid assembly and disassembly of the primary part 1 and the secondary part 2. The ability to quickly assemble and disassemble is important for improving maintenance efficiency and reducing downtime, especially in situations where urgent repairs or replacement of the secondary section 2 are required.

[0028] like Figure 5 、 Figure 6 and Figure 7As shown, the buckle 3 is a key component connecting the primary part 1 and the secondary part 2. The buckle 3 is made of an elastic material. This material selection is intended to provide sufficient elasticity and durability to withstand the repeated bending and pressure in daily operation without breaking or deforming. The buckle 3 is composed of a shaft portion 3.2 and a clamping column portion 3.1. The shaft portion 3.2 and the clamping column portion 3.1 are connected by a connecting block 3.2.3. The width of the connecting block 3.2.3 is smaller than the width of the shaft portion 3.2 and the clamping column portion 3.1. This design allows the shaft portion 3.2 and the clamping column portion 3.1 to flexibly adapt to different angle changes when the buckle 3 is bent, while maintaining the stability of the buckle 3. The widths of the shaft portion 3.2 and the post portion 3.1 are equal, and the connector is made of an elastic material. This design facilitates the bending of the buckle 3 and prevents breakage due to repeated bending. The top surface of the connecting block 3.2.3 is concave, avoiding material extrusion when the buckle 3 is bent, facilitating bending while extending the service life of the buckle 3. The cross-section of the shaft portion 3.2 is a right-angled triangle with an arc-shaped hypotenuse and a rectangular hole running through the middle. In addition to saving material, it also facilitates the elastic deformation of the buckle 3, prevents stress concentration, and enhances the durability of the buckle 3. Two shafts 3.2.1 are provided at the end of the shaft portion 3.2 away from the post portion 3.1. These two shafts 3.2.1 are symmetrically arranged along the axis of symmetry of the buckle 3, ensuring the balance and stability of the buckle 3 during rotation. An open groove 3.2.2 is provided between the two rotating shafts 3.2.1, which divides the middle part of the rotating shaft part 3.2 downward into two symmetrical parts. The setting of the open groove 3.2.2 facilitates the installation of the rotating shaft 3.2.1. During installation, the two rotating shafts 3.2.1 are squeezed toward the middle part to leave installation space, and the rotating shaft part 3.2 is placed in the card slot b 2.1. The rotating shaft 3.2.1 is aligned with the rotating shaft groove 2.1.1, the rotating shaft part 3.2 is loosened, and the rotating shaft 3.2.1 is installed into the rotating shaft groove 2.1.1 of the card slot b 2.1. The rotating shaft 3.2.1 is the rotation center of the buckle 3. The setting of the rotating shaft groove 2.1.1 and the rotating shaft 3.2.1 allows the buckle 3 to rotate freely in the card slot b 2.1 to adapt to different assembly angles and facilitate the disassembly and assembly of the buckle 3. A limiting post 3.2.4 is provided at the other end of the shaft portion 3.2. The limiting post 3.2.4 is arranged on the side of the clamping post 3.1.1 close to the shaft 3.2.1. The limiting post 3.2.4 can be inserted into the mounting groove 1.1.1 of the clamping slot a 1.1 of the primary part 1. When in the installed state, the limiting post 3.2.4 is stuck in the side of the mounting groove 1.1.1 away from the limiting protrusion 1.1.2. This design makes the assembly or disassembly of the buckle 3 smoother, and also serves to fix the side cover 2.3 of the secondary part 2, fix the outer shell of the secondary part 2, and enhance the stability of the overall structure. The cross-section of the clamping post portion 3.1 is rectangular in shape, and a clamping post 3.1.1 is provided at one end of the bottom surface. The clamping post 3.1.1 is the main fixing part of the buckle 3. It is inserted into the mounting groove 1.1.1 of the primary part 1 to ensure that the secondary part 2 is firmly fixed to the primary part 1.A snap-fitting portion 3.1.2 is provided at the bottom end of the post 3.1.1. This is a special design of the buckle 3. The snap-fitting portion 3.1.2 is in the shape of an inverted triangle with the tip facing upward. It cooperates with the limiting protrusion 1.1.2 of the primary part 1 to provide stability and fixing force. The snap-fitting portion 3.1.2 of the buckle 3 can be clamped onto the limiting protrusion 1.1.2. The lower bottom angle of the limiting protrusion 1.1.2 and the short side of the snap-fitting portion 3.1.2 are the same as the angle between the post 3.1.1. This design allows for a tighter fit between the buckle 3 and the limiting protrusion 1.1.2, prevents the post 3.1.1 from dislocating, and improves assembly reliability. Several serrated protrusions 3.3 are provided on the top surface of the buckle 3. This prevents material extrusion during bending of the buckle 3, makes bending of the buckle 3 easier, and ensures smooth assembly. The shaft 3.2.1 of the buckle 3 is rotatably installed in the shaft groove 2.1.1 of the secondary part 2, and the clamping column 3.1.1 is installed in the installation groove 1.1.1 of the primary part 1, which improves the stability and reliability of the buckle 3 and reduces the risk of the buckle 3 falling off due to vibration or external force, thereby enhancing the safety and durability of the circuit breaker. The buckle 3 is made of elastic material. When the buckle 3 is installed, the locking portion 3.1.2 and the clamping column 3.1.1 are slightly deformed. After the locking portion 3.1.2 and the limiting protrusion 1.1.2 are locked, the buckle 3 rebounds. This elastic deformation allows the buckle 3 to be tightly fixed in place and is also easy to disassemble. When the secondary part 2 needs to be replaced, the clamping column 3.1.1 can be pulled out from the installation groove 1.1.1 of the primary part 1, which is convenient and quick.

[0029] Assembly and disassembly processes.

[0030] In the assembly process, first align the side cover 2.3 of the secondary part 2 with the base 2.2, and then insert the limiting plate 2.3.2 into the limiting slot 2.2.1. The precise fit of the limiting plate 2.3.2 and the limiting slot 2.2.1 ensures the stable fixation of the side cover 2.3, preventing displacement during subsequent operations. The U-shaped plate 2.4.1 of the flip cover 2.4 is inserted into the U-shaped slot of the side cover 2.3, ensuring that the flip cover 2.4 is securely fixed on the side cover 2.3, while also allowing the flip cover 2.4 to be easily opened when needed, completing the assembly of the secondary part 2. First, align the primary part 1 and the secondary part 2, and then insert the pins 1.2 of the primary part 1 into the slots of the secondary part 2. The guide of the socket 2.3.1 and the slot ensures the correct alignment of the clamping groove a 1.1 and the clamping groove b 2.1. Then, press the two shafts 3.2.1 of the shaft part 3.2 towards the middle part, leaving a mounting space, and place the shaft part 3.2 into the clamping groove b 2.1, aligning the shafts 3.2.1 with the shaft slots 2.1.1. Loosen the shaft part 3.2, and install the shafts 3.2.1 into the shaft slots 2.1.1 of the clamping groove b 2.1. The installation of the shafts 3.2.1 is the key to the fixation of the buckle 3, which allows the buckle 3 to rotate freely in the clamping groove b 2.1. Then, under the rotation of the shafts 3.2.1, insert the clamping columns 3.1.1 into the clamping grooves a 1.1 of the primary part 1. The clamping part 3.1.2 and the clamping column 3.1.1 are slightly deformed, and the clamping part 3.1.2 and the limiting protrusion 1.1.2 are clamped, after which the buckle 3 rebounds and is tightly fixed in place. After installation, the elastic deformation ensures the secure fixation of the buckle 3, while also facilitating disassembly.

[0031] In the disassembly process, the clamping column part 3.1 of the buckle 3 is detached from the clamping groove a 1.1 of the primary part 1, which requires the operator to apply appropriate force to overcome the elastic deformation of the buckle 3. This causes the clamping part 3.1.2 of the buckle 3 to deform and detach from the limiting protrusion 1.1.2, taking advantage of the elastic properties of the buckle 3 to allow the clamping part 3.1.2 to smoothly detach from the limiting protrusion 1.1.2. Under the rotation of the shafts 3.2.1, the clamping columns 3.1.1 are detached from the mounting slots 1.1.1 of the clamping groove a 1.1, completing the separation of the secondary part 2 and the primary part 1 and providing convenience for subsequent maintenance or updating. When the secondary part 2 needs to be updated or repaired, first open the flip cover 2.4 to allow easy access to the internal components of the secondary part 2. Detach the limiting plate 2.3.2 of the side cover 2.3 from the limiting slot 2.2.1 of the base 2.2, and remove the side cover 2.3, completing the disassembly. This allows for on-site updating of the circuit or repair according to user needs, providing convenience and efficiency.

[0032] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A circuit breaker that is easy to assemble, characterized in that: It includes a primary part and a secondary part. A card slot a and a card slot b are respectively provided on both sides of the connecting surface of the primary part and the secondary part. The card slot a and the card slot b are connected by a buckle. One end of the buckle is provided with several rotating shafts, with open slots between the rotating shafts, and the other end is provided with a clamping column, and the bottom end of the clamping column is provided with a clamping part; The two side walls of the slot b are provided with shaft grooves, the bottom surface of the slot a is provided with a mounting groove, and the inner wall of the primary part is provided with a limiting protrusion near the edge of the mounting groove.

2. A circuit breaker that is easy to assemble according to claim 1, characterized in that: The buckle shaft is rotatably installed in the shaft groove of the secondary part, and the clamping column can be inserted into the installation groove of the primary part.

3. The circuit breaker that is easy to assemble according to claim 1, characterized in that: The cross section of the limiting protrusion is a right-angled trapezoid, and the lower bottom corner is close to the installation groove.

4. A circuit breaker that is easy to assemble according to claim 3, characterized in that: The engaging portion of the buckle is an inverted triangle and can be engaged with the limiting protrusion. The lower bottom angle of the limiting protrusion and the included angle between the short side of the engaging portion and the clamping column are the same.

5. A circuit breaker easy to assemble according to claim 1, 2 or 4, characterized in that: The top surface of the buckle is provided with a plurality of sawtooth-shaped protrusions.

6. The circuit breaker easy to assemble according to claim 1, characterized in that: The clip is provided with a limit column on the side of the clamping column close to the rotating shaft, and the limit column can be inserted into the clamping slot a of the primary part.

7. The circuit breaker that is easy to assemble according to claim 1, characterized in that: A plurality of pins are arranged on the connecting surface of the primary part, and a plurality of sockets are arranged on the connecting surface of the secondary part, and the pins can be inserted into the sockets.

8. The circuit breaker that is easy to assemble according to claim 2, characterized in that: The shell of the secondary part includes a base and a side cover. The side cover is provided with a plurality of limit plates close to the base. Both sides of the secondary part base are provided with a plurality of limit grooves, and the limit plates can be stuck in the limit grooves.

9. The circuit breaker easy to assemble according to claim 8, characterized in that: The top of the secondary part is provided with a flip cover, one end of the flip cover close to the base is provided with a U-shaped plate, and one end of the secondary part side cover close to the flip cover is provided with a U-shaped groove, and the U-shaped plate can be stuck in the U-shaped groove.

Images