Insulated wear-resistant molded case circuit breaker base

Abstract

The utility model relates to the field of molded case circuit breaker, specifically relates to an insulating wear -resisting type molded case circuit breaker base, including plastic circuit breaker base body, wear layer is daubed in the outside of plastic circuit breaker base body for improving wear resistance, the front and back inside of plastic circuit breaker base body is provided with wiring slot, the utility model relates to an insulating wear -resisting type molded case circuit breaker base, through the setting of clamping block, base, bolt, support, transmission rod, carousel, torsion spring and winding drum, the inside space of plastic circuit breaker base body is reasonably used to wire distribution, avoid the wire too long and lead to wire distribution to be entangled together, also strengthen the location of wire distribution, through the winding of wire on winding drum, and the torsion spring outside transmission rod of winding drum both sides can play the role of rebound drive winding drum rotation, thereby the wire of too long can be wound on winding drum, avoid the whole wire distribution to be placed, and the wire passes through two groups of clamping block, can be positioned to wire distribution, strengthen the stability when wire distribution.

Description

Technical Field

[0001] This utility model relates to the field of molded case circuit breakers, specifically to an insulating and wear-resistant molded case circuit breaker base. Background Technology

[0002] A molded case circuit breaker is a circuit breaker in which the main components, such as the contact system, arc-extinguishing chamber, operating mechanism, and various tripping devices, are mounted on a housing (two parts: bottom shell and cover) made of molded insulating material. The base of the molded case circuit breaker is an important component of the circuit breaker. It supports the core components of the circuit breaker and provides a stable installation environment for them.

[0003] A search revealed a utility model of a molded case circuit breaker base (publication number CN216818246U), comprising a first base, a second base, and a cover. The first base has a first mounting position and a second mounting position, with the second mounting position located to one side of the first mounting position. A first circuit breaker functional module is mounted on the first mounting position. The second base is detachably snapped onto the second mounting position and detachably fixed thereto by fastening components. The second base can be removed to install a second circuit breaker functional module on the second mounting position. The cover is detachably mounted on the second base. Compared to existing technologies, this utility model constructs a universal base structure, achieving the goals of reducing design costs and improving design efficiency. It features a simple structure, reliable operation, convenient disassembly and installation, and unchanged size, providing an interchangeable and universal base function for molded case circuit breakers with intelligent tripping control modules.

[0004] Existing molded case circuit breaker bases have an overly compact internal design, resulting in limited wiring space. Furthermore, the excessive length of the wires during wiring can cause them to become tangled, affecting circuit performance and stability, and reducing the overall flexibility of the base space. The molded case circuit breaker bases in the comparative case mentioned above have a similar layout to existing bases, making wiring inconvenient after installing the circuit breaker.

[0005] Therefore, it is necessary to invent an insulating and wear-resistant molded case circuit breaker base to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an insulating and wear-resistant molded case circuit breaker base. By winding the wire onto a take-up drum, the torsion springs on the outside of the transmission rods on both sides of the take-up drum can rebound and drive the take-up drum to rotate. Thus, excessively long wires can be wound onto the take-up drum, avoiding the inability to arrange the wiring as a whole. The wire passes through two sets of clamps, which can limit the wiring and enhance the stability during wiring. This solves the problems mentioned in the background art of existing molded case circuit breaker bases, which have an overly compact internal design, resulting in limited wiring space. Moreover, the excessive length of the wires during wiring causes them to tangle, affecting the performance and stability of the circuit, and reducing the overall flexibility of the base space.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an insulating and wear-resistant molded case circuit breaker base, comprising a plastic circuit breaker base body;

[0008] A wear-resistant layer is applied to the exterior of the plastic circuit breaker base to improve wear resistance. Wiring grooves are provided on the front and rear inner sides of the plastic circuit breaker base. A mounting bracket is fixedly connected inside the plastic circuit breaker base. Lead wire grooves are provided inside the mounting bracket. Insert blocks are slidably connected inside the mounting bracket. Telescopic springs are fixedly installed on the inner side of each insert block. A clamping block is fixedly connected to the other end of each telescopic spring.

[0009] The base is fixedly installed on both sides inside the plastic circuit breaker base body. The upper two sides of the base are fixedly connected to the brackets. The brackets are rotatably connected to the inside of the brackets. The other end of the transmission rod is fixedly connected to the turntable. A torsion spring is sleeved on the outside of the transmission rod. A winding drum is fixedly connected to the inside of the turntable.

[0010] Preferably, the base of the plastic circuit breaker is made of DMC, and the wear-resistant layer is made of polytetrafluoroethylene.

[0011] Preferably, the inner wall of the plastic circuit breaker base is provided with a first slot on both sides, and the inner wall of the mounting bracket is provided with a second slot, and the plug is movably connected to the first slot and the second slot.

[0012] Preferably, the telescopic springs are arranged symmetrically about the central axis of the clamping block, and the clamping block has a U-shaped groove inside.

[0013] Preferably, bolts are threaded through the outer side of the base, and the base is threadedly connected to the inside of the plastic circuit breaker base body.

[0014] Preferably, the torsion spring is located between the bracket and the turntable, and the winding drum is rotatably connected to the bracket.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] By using clamps, bases, bolts, brackets, transmission rods, turntables, torsion springs, and take-up drums, the internal space of the plastic circuit breaker base is rationally utilized for wiring, preventing excessively long wires from becoming tangled. This also enhances the limiting effect of the wiring. By winding the wire onto the take-up drum, the torsion springs on the outside of the transmission rods on both sides of the take-up drum can rebound and drive the take-up drum to rotate, thus preventing excessively long wires from being unable to be laid out as a whole. The wire passes through two sets of clamps, which can limit the wiring and enhance the stability of the wiring process.

[0017] By incorporating a plastic circuit breaker base and a wear-resistant layer, insulation and wear resistance are enhanced compared to traditional circuit breaker bases. This prevents external wear on the plastic circuit breaker base. The base itself is made of DMC, a high-performance composite material with excellent mechanical, insulating, and chemical resistance properties. The wear-resistant layer, made of polytetrafluoroethylene (PTFE), offers excellent wear resistance, chemical corrosion resistance, and a low coefficient of friction, making it suitable for outer coatings requiring high wear resistance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the plastic circuit breaker base of this utility model;

[0021] Figure 3 This is a schematic diagram of the mounting bracket structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the clamping block structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the winding drum structure of this utility model.

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

[0025] 1. Plastic circuit breaker base; 2. Wear-resistant layer; 3. Wiring groove; 4. First slot; 5. Mounting bracket; 6. Lead wire groove; 7. Second slot; 8. Insert block; 9. Telescopic spring; 10. Clamping block; 11. Base; 12. Bolt; 13. Bracket; 14. Transmission rod; 15. Turntable; 16. Torsion spring; 17. Winding drum. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-5 The diagram shows an insulating and wear-resistant molded case circuit breaker base, which includes a plastic circuit breaker base body 1;

[0028] Wear-resistant layer 2 is applied to the outside of the plastic circuit breaker base body 1 to improve wear resistance. Wiring grooves 3 are provided on the front and rear inner sides of the plastic circuit breaker base body 1. A mounting bracket 5 is fixedly connected inside the plastic circuit breaker base body 1. A lead wire groove 6 is provided inside the mounting bracket 5. A plug block 8 is slidably connected inside the mounting bracket 5. A telescopic spring 9 is fixedly installed on the inner side of the plug block 8. A clamping block 10 is fixedly connected to the other end of the telescopic spring 9.

[0029] The base 11 is fixedly installed on both sides inside the plastic circuit breaker base body 1. The upper sides of the base 11 are fixedly connected to the bracket 13. The inside of the bracket 13 is rotatably connected to the transmission rod 14. The other end of the transmission rod 14 is fixedly connected to the turntable 15. The outside of the transmission rod 14 is fitted with a torsion spring 16. The inside of the turntable 15 is fixedly connected to the take-up drum 17. By winding the wire onto the take-up drum 17, the torsion spring 16 outside the transmission rod 14 on both sides of the take-up drum 17 can play the role of rebounding and driving the take-up drum 17 to rotate. Thus, the excessively long wire can be wound onto the take-up drum 17, avoiding the inability to lay out the wiring as a whole. The wire passes through the two sets of clamps 10, which can limit the wiring and enhance the stability during wiring.

[0030] like Figure 1 and Figure 2 As shown, the plastic circuit breaker base 1 is made of DMC, and the wear-resistant layer 2 is made of polytetrafluoroethylene. The plastic circuit breaker base 1 itself is made of DMC, which is a high-performance composite material with excellent mechanical properties, insulation properties and chemical resistance. The wear-resistant layer 2 is coated on the outside of the plastic circuit breaker base 1, and the wear-resistant layer 2 is made of polytetrafluoroethylene, which has excellent wear resistance, chemical corrosion resistance and low coefficient of friction, and is suitable for outer coatings that require high wear resistance.

[0031] like Figure 1 , Figure 2 and Figure 3As shown, the inner wall of the plastic circuit breaker base 1 has a first slot 4 on both sides, and the inner wall of the mounting bracket 5 has a second slot 7. The insert 8 is movably connected to the first slot 4 and the second slot 7. The insert 8 on the rear side of the clamp 10 is T-shaped and can be inserted into the first slot 4 on the inner wall of the plastic circuit breaker base 1 and the second slot 7 on the inner wall of the mounting bracket 5, thereby facilitating the disassembly and assembly of the clamp 10.

[0032] like Figure 1 and Figure 4 As shown, the telescopic springs 9 are symmetrically arranged around the central axis of the clamping block 10. The clamping block 10 has a U-shaped groove inside. Through the two sets of telescopic springs 9 on the rear side of the clamping block 10, the clamping block 10 can be squeezed back to limit the clamping of the line. The inside of the clamping block 10 is a U-shaped groove, which facilitates the clamping of the line.

[0033] like Figure 1 and Figure 5 As shown, bolts 12 are threaded through the outer side of the base 11. The base 11 is threadedly connected to the inside of the plastic circuit breaker base 1. The base 11 and the entire winding drum 17 are installed on the inside of the plastic circuit breaker base 1 by bolts 12, thereby enhancing the stability of the base 11 and facilitating disassembly.

[0034] like Figure 5 As shown, the torsion spring 16 is located between the bracket 13 and the turntable 15. The winding drum 17 is rotatably connected to the bracket 13. By winding the wire onto the winding drum 17, the torsion spring 16 outside the transmission rod 14 on both sides of the winding drum 17 can play the role of rebounding and driving the winding drum 17 to rotate. Thus, the excessively long wire can be wound onto the winding drum 17, which facilitates the wiring inside the plastic circuit breaker base body 1.

[0035] The working principle of this utility model is as follows: First, the circuit breaker components are installed inside the plastic circuit breaker base 1 and mounting bracket 5. Then, the wires connected to the components inside the circuit breaker are wound onto the take-up drum 17. The torsion springs 16 on the outside of the drive rods 14 on both sides of the take-up drum 17 can rebound and drive the take-up drum 17 to rotate, so that excessively long wires can be wound onto the take-up drum 17, facilitating wiring inside the plastic circuit breaker base 1. Then, the wire is pulled out from the take-up drum 17 and placed in two sets of clamps 10 to limit the wire. The two sets of telescopic springs 9 on the rear side of the clamps 10 can rebound and compress the clamps 10 to the wire. The clamping and limiting mechanism uses a U-shaped groove inside the clamping block 10 to facilitate wire clamping. The wire is then pulled out from the wiring slot 3 for wiring. Meanwhile, the plastic circuit breaker base 1 itself is made of DMC material, a high-performance composite material with excellent mechanical, insulation, and chemical resistance properties. The plastic circuit breaker base 1 is coated with a wear-resistant layer 2, which is made of polytetrafluoroethylene (PTFE), possessing excellent wear resistance, chemical corrosion resistance, and a low coefficient of friction. This layer is suitable for outer coatings requiring high wear resistance. Thus, the use of this insulated and wear-resistant molded case circuit breaker base is completed.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An insulating and wear-resistant molded case circuit breaker base, characterized in that: Including the plastic circuit breaker base (1); Wear-resistant layer (2) is applied to the outside of the plastic circuit breaker base body (1) to improve wear resistance. Wiring grooves (3) are provided on the front and rear inner sides of the plastic circuit breaker base body (1). An installation bracket (5) is fixedly connected inside the plastic circuit breaker base body (1). Lead wire grooves (6) are provided inside the installation bracket (5). Insert blocks (8) are slidably connected inside the installation bracket (5). Telescopic springs (9) are fixedly provided on the inner side of the insert blocks (8). A clamping block (10) is fixedly connected to the other end of the telescopic springs (9). The base (11) is fixedly installed on both sides inside the plastic circuit breaker base body (1). The upper sides of the base (11) are fixedly connected to the bracket (13). The bracket (13) is rotatably connected to the inside of the bracket (14). The other end of the transmission rod (14) is fixedly connected to the turntable (15). The outside of the transmission rod (14) is fitted with a torsion spring (16). The inside of the turntable (15) is fixedly connected to the winding drum (17).

2. The insulating and wear-resistant molded case circuit breaker base according to claim 1, characterized in that: The plastic circuit breaker base (1) is made of DMC, and the wear-resistant layer (2) is made of polytetrafluoroethylene.

3. The insulating and wear-resistant molded case circuit breaker base according to claim 1, characterized in that: The inner wall of the plastic circuit breaker base (1) is provided with a first slot (4) on both sides, and the inner wall of the mounting bracket (5) is provided with a second slot (7). The plug (8) is movably connected to the first slot (4) and the second slot (7).

4. The insulating and wear-resistant molded case circuit breaker base according to claim 1, characterized in that: The telescopic spring (9) is symmetrically arranged around the central axis of the clamping block (10), and the clamping block (10) has a U-shaped groove inside.

5. The insulating and wear-resistant molded case circuit breaker base according to claim 1, characterized in that: Bolts (12) are threaded through the outer side of the base (11), and the base (11) is threadedly connected to the inside of the plastic circuit breaker base body (1).

6. The insulating and wear-resistant molded case circuit breaker base according to claim 1, characterized in that: The torsion spring (16) is located between the bracket (13) and the turntable (15), and the winding drum (17) is rotatably connected to the bracket (13).

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