Circuit contactor

Abstract

The utility model discloses a circuit contactor which comprises a main body, a shell, a static wiring terminal, a movable wiring terminal, an auxiliary wiring terminal, a sliding block and an electromagnetic assembly, the shell covers the main body, the static wiring terminal is arranged on the main body, the sliding block is movably arranged on the main body, the movable wiring terminal is arranged on the sliding block, and the auxiliary wiring terminal is arranged on the sliding block. The auxiliary wiring terminal is arranged on the electromagnetic assembly; the electromagnetic assembly is arranged in the shell 2 and is used for controlling the movement of the sliding block; according to the electromagnetic assembly, a coil is wound around the periphery of a static iron core, a shell covers the periphery of the coil and the periphery of the static iron core, and a movable iron core penetrates through a wiring board and is connected with a sliding block. A buffer device is arranged between the movable iron core and the static iron core, through the arrangement, the buffer device playing a role in buffering is arranged at the contact position of the movable iron core and the static iron core, the buffer device is arranged on the periphery of the movable iron core in a sleeving mode, the effect of buffering the impact of the movable iron core on the static iron core is achieved, and meanwhile noise is reduced.

Description

Technical Field

[0001] This application relates to the field of contactor technology, and more particularly to a circuit contactor. Background Technology

[0002] A contactor is a widely used switching device that uses electromagnetic, pneumatic, or hydraulic principles to control the switching of the main circuit. Contactors have advantages such as strong current interruption capability, rapid action, safe operation, frequent operation, and remote control. However, they cannot interrupt short-circuit currents; therefore, contactors are usually used in conjunction with fuses. The primary control object of a contactor is an electric motor, but it can also control other electrical loads, such as welding machines and electric furnaces.

[0003] In the existing technology, during the operation of a contactor, the energization and de-energization of the electromagnetic field occur instantaneously, and the generation and disappearance of the magnetic force also occur instantaneously. Therefore, when the contactor is in operation, there is often a violent collision between the moving iron core and the stationary iron core inside, and the noise generated is relatively large, so there is room for improvement. Summary of the Invention

[0004] To address the aforementioned problems, this application proposes a circuit contactor that incorporates a buffer device at the contact point between the moving and stationary iron cores. This buffer device, fitted around the outer periphery of the moving iron core, effectively cushions the impact of the moving iron core on the stationary iron core and reduces noise. This circuit contactor is specifically implemented through the following technical solution:

[0005] A circuit contactor includes: a main body, a housing, a stationary terminal, a moving terminal, an auxiliary terminal, a slider, and an electromagnetic assembly. The housing covers the main body, the stationary terminal is disposed on the main body, the slider is movably disposed on the main body, and the moving terminal is disposed on the slider. The auxiliary terminal is disposed on the electromagnetic assembly, which is disposed within the housing for controlling the movement of the slider. The electromagnetic assembly includes: a moving iron core, a stationary iron core, a coil, a terminal block, and a housing. The stationary iron core is sleeved around the outer periphery of the moving iron core, the coil is wound around the outer periphery of the stationary iron core, and the housing covers the outer periphery of the coil and the stationary iron core. The moving iron core passes through the terminal block and is connected to the slider. A buffer device is provided between the moving iron core and the stationary iron core, the buffer device including a buffer washer for buffering collisions between the moving iron core and the stationary iron core.

[0006] In a further configuration, the buffer washer is fitted around the outer periphery of the moving iron core. The buffer washer includes an upper connecting part, a lower connecting part, and a telescopic part. The upper connecting part is connected to the upper end of the moving iron core, the lower connecting part is connected to the stationary iron core, and the telescopic part is disposed between the upper connecting part and the lower connecting part. This configuration provides a buffering effect against the collision between the moving iron core and the stationary iron core.

[0007] Furthermore, the upper connecting part, lower connecting part, and telescopic part are integrated into a single structure, which improves the overall strength and service life.

[0008] Furthermore, the inner diameter of the buffer washer is larger than the diameter of the moving iron core. This design reduces friction, makes the movement smoother, and reduces wear.

[0009] Furthermore, the stationary iron core is provided with a movable cavity corresponding to the sliding range of the moving iron core. A limiting protrusion is provided at the bottom of the movable cavity, and a limiting groove is provided on the moving iron core corresponding to the limiting protrusion. Through this setting, the stationary iron core of the moving iron core plays a certain limiting role, and at the same time, it also plays a certain limiting role on the reset spring, making the overall structure more stable.

[0010] In a further configuration, the auxiliary terminal is disposed on the terminal block, and the coil is electrically connected to the terminal block. When the auxiliary terminal is connected to the circuit, the coil is energized. Through this configuration, the coil and the stationary iron core undergo electromagnetic induction to generate magnetic force.

[0011] Furthermore, the outer casing also includes a base, the casing is disposed within the base, and the base is provided with a positioning protrusion. The casing is provided with a positioning hole corresponding to the position of the positioning protrusion. This arrangement facilitates the positioning of the outer casing within the base when the moving iron core drives the outer casing to move, making the overall structure more stable.

[0012] In summary, the circuit contactor described above has a buffer device installed at the contact point between the moving iron core and the stationary iron core. This buffer device is fitted around the outer periphery of the moving iron core, which buffers the impact of the moving iron core on the stationary iron core and reduces noise. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1This is a schematic diagram of the structure of a circuit contactor provided in an embodiment of this application;

[0015] Figure 2 This is a front sectional view of a circuit contactor provided in an embodiment of this application;

[0016] Figure 3 Circuit contactor provided in the embodiments of this application Figure 2 Enlarged view of section A;

[0017] Figure 4 The exploded structure of the circuit contactor provided in the embodiments of this application is a schematic diagram;

[0018] Figure 5 This is a schematic diagram of the housing structure of the circuit contactor provided in an embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the base structure of the circuit contactor provided in an embodiment of this application.

[0020] The following are the labeling elements in the figure:

[0021] 1. Main body; 2. Outer shell; 3. Stationary terminal block; 4. Moving terminal block; 5. Auxiliary terminal block; 6. Sliding block; 7. Electromagnetic assembly; 8. Moving iron core; 9. Stationary iron core; 10. Coil; 11. Terminal block; 12. Housing; 13. Buffer device; 14. Buffer washer; 15. Upper connecting part; 16. Lower connecting part; 17. Telescopic part; 18. Movable cavity; 19. Limiting protrusion; 20. Limiting groove; 21. Base; 22. Positioning protrusion; 23. Positioning hole. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] The appearance of the above terms in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described herein can be combined with other embodiments.

[0024] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0025] Please refer to the following: Figures 1 to 6A circuit contactor includes: a main body 1, a housing 2, a stationary terminal block 3, a moving terminal block 4, an auxiliary terminal block 5, a sliding block 6, and an electromagnetic assembly 7. The housing 2 covers the main body 1, the stationary terminal block 3 is disposed on the main body 1, the sliding block 6 is movably disposed on the main body 1, and the moving terminal block 4 is disposed on the sliding block. The auxiliary terminal block 5 is disposed on the electromagnetic assembly 7, which is disposed within the housing 2 for controlling the movement of the sliding block 6. The electromagnetic assembly 7 includes: a moving terminal block 4, a moving terminal block 5, a sliding terminal block 6, and an auxiliary terminal block 5. The system comprises an iron core 8, a stationary iron core 9, a coil 10, a terminal block 11, and a housing 12. The stationary iron core 9 is fitted around the outer periphery of the moving iron core 8. The coil 10 is wound around the outer periphery of the stationary iron core 9, and the housing 12 covers the outer periphery of the coil 10 and the stationary iron core 9. The moving iron core 8 passes through the terminal block 11 and is connected to the sliding block 6. A buffer device 13 is provided between the moving iron core 8 and the stationary iron core 9. The buffer device 13 includes a buffer washer 14 for buffering the collision between the moving iron core 8 and the stationary iron core 9.

[0026] Please see Figures 1 to 6In this embodiment, during the use of the contactor, the stationary terminal 3 and the moving terminal 4 are set to normally open contacts from the opening and closing angle. When the auxiliary terminal 5 is energized, the coil 10 is energized, and electromagnetic induction occurs between the coil 10 and the stationary iron core 9, generating a magnetic force. This attracts the moving iron core 8, causing the sliding block 6 to move towards the moving and stationary iron core 9. Consequently, the moving terminal 4 on the sliding block 6 closes between the stationary terminal 3 on the main body 1, forming a closed state. Thus, the energization and de-energization of the auxiliary terminal 5 can achieve the practical control of the main load circuit's conduction and... Disconnect; the buffer washer 14 is sleeved on the outer periphery of the moving iron core 8. The buffer washer 14 includes an upper connecting part 15, a lower connecting part 16, and a telescopic part 17. The upper connecting part 15 is connected to the upper end of the moving iron core 8, the lower connecting part 16 is connected to the stationary iron core 9, and the telescopic part 17 is disposed between the upper connecting part 15 and the lower connecting part 16. With this arrangement, the magnetic force of the stationary iron core 9 is mainly affected by the size of the stationary iron core 9, the number of turns of the coil 10, and the magnitude of the current. When the magnetism is strong, the moving iron core 8 will instantly impact the stationary iron core 9, which can easily cause a collision, resulting in damage to the iron core or the shell 1. The damage to core 2 necessitates the installation of the buffer washer 14, which converts the hard friction between the moving iron core 8 and the stationary iron core 9 into flexible friction with the buffer washer 14, reducing friction loss and significantly reducing noise during operation. The upper connecting part 15, the lower connecting part 16, and the telescopic part 17 are integral structures. The inner diameter of the buffer washer 14 is larger than the diameter of the moving iron core 8. The stationary iron core 9 is provided with a movable cavity 18 corresponding to the sliding range of the moving iron core 8. A limiting protrusion 19 is provided at the bottom of the movable cavity 18, and a limiting groove 20 is provided on the moving iron core 8 corresponding to the limiting protrusion 19. The auxiliary terminal 5 is disposed on the terminal block 11, and the coil 10 is electrically connected to the terminal block 11. When the auxiliary terminal 5 is connected to the circuit, the coil 10 is energized. It should be noted that the terminal block is the circuit board, which mainly plays the role of power distribution. In this embodiment, after the circuit board is energized, it distributes power to the coil 10, so that the coil 10 is energized and thus generates magnetic force. The outer shell 2 also includes a base 21. The housing 12 is disposed in the base 21, and a positioning protrusion 22 is disposed in the base 21. The housing 12 is provided with a positioning hole 23 corresponding to the position of the positioning protrusion 22.

[0027] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A circuit contactor, comprising: The assembly comprises a main body (1), a housing (2), a stationary terminal block (3), a movable terminal block (4), an auxiliary terminal block (5), a sliding block (6), and an electromagnetic assembly (7). The housing (2) covers the main body (1), the stationary terminal block (3) is disposed on the main body (1), the sliding block (6) is movably disposed on the main body (1), and the movable terminal block (4) is disposed on the sliding block. The auxiliary terminal block (5) is disposed on the electromagnetic assembly (7), and the electromagnetic assembly (7) is disposed inside the housing (2) to control the movement of the sliding block (6). The electromagnetic component (7) includes: a moving iron core (8), a stationary iron core (9), a coil (10), a terminal block (11), and a housing (12). The stationary iron core (9) is sleeved around the outer periphery of the moving iron core (8), the coil (10) is wound around the outer periphery of the stationary iron core (9), and the housing (12) covers the outer periphery of the coil (10) and the stationary iron core (9). The moving iron core (8) passes through the terminal block (11), and the moving iron core (8) is connected to the sliding block (6). The feature is that a buffer device (13) is provided between the moving iron core (8) and the stationary iron core (9), and the buffer device (13) includes a buffer washer (14) for buffering the collision between the moving iron core (8) and the stationary iron core (9).

2. A circuit contactor according to claim 1, characterized in that... The buffer washer (14) is sleeved on the outer periphery of the moving iron core (8). The buffer washer (14) includes an upper connecting part (15), a lower connecting part (16) and a telescopic part (17). The upper connecting part (15) is connected to the upper end of the moving iron core (8), the lower connecting part (16) is connected to the stationary iron core (9), and the telescopic part (17) is disposed between the upper connecting part (15) and the lower connecting part (16).

3. A circuit contactor according to claim 2, characterized in that... The upper connecting part (15), the lower connecting part (16) and the telescopic part (17) are an integral structure.

4. A circuit contactor according to claim 2, characterized in that... The inner diameter of the buffer washer (14) is larger than the diameter of the moving iron core (8).

5. A circuit contactor according to claim 1, characterized in that... The stationary iron core (9) is provided with a movable cavity (18) corresponding to the sliding range of the moving iron core (8). The bottom of the movable cavity (18) is provided with a limiting protrusion (19), and the moving iron core (8) is provided with a limiting groove (20) corresponding to the limiting protrusion (19).

6. A circuit contactor according to claim 1, characterized in that... The auxiliary terminal (5) is disposed on the terminal block (11), and the coil (10) is electrically connected to the terminal block (11). When the auxiliary terminal (5) is connected to the circuit, the coil (10) is energized.

7. A circuit contactor according to claim 1, characterized in that... The outer shell (2) also includes a base (21), the housing (12) is disposed in the base (21), and a positioning protrusion (22) is disposed in the base (21), and a positioning hole (23) is disposed in the housing (12) corresponding to the position of the positioning protrusion (22).

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