A DC contactor with visualization

Abstract

The utility model discloses a visualized DC contactor, comprising a contactor housing, a contactor handle installed at the upper end of the contactor housing, a shaft connected to the interior of the upper section of the contactor housing, a moving iron core arranged at the lower end of the shaft; a coil installed at the inner side of the middle section of the contactor housing, a moving iron core passing through the inner side of the coil, a moving touch plate assembly installed at the outer side of the lower section of the moving iron core, and a moving contact installed at the upper side of the end of the moving touch plate assembly. The visualized DC contactor, when the coil is energized, generates magnetic force to attract the moving iron core to drive the moving touch plate assembly to move upward, contacting with the static touch plate assembly, so that the main circuit is turned on, at which time the buffer spring drives the micro switch top rod to follow the moving iron core to move upward, forming a switch that changes from normally open to normally closed, and the on-off status of the main circuit can be judged by the closed state of the first and second pins of the travel switch, thereby meeting the visualization requirements of the main circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current contactors, in particular to a visualized direct current contactor. Background Art

[0002] DC contactor is an important electrical control device that uses the current in the coil to generate a magnetic field to control the closing and opening of the contacts to achieve control of the DC load. It is widely used in situations where frequent starting and stopping are required.

[0003] The selection and structural design of DC contactors directly affect the safety and efficiency of the circuit. When selecting and using DC contactors, comprehensive consideration should be given to factors such as load characteristics and operating frequency, and ensure that they are installed and connected according to the correct wiring method.

[0004] When the existing DC contactor is switching the circuit on and off, the on-off status of the main circuit cannot be understood in time, the circuit status is not visualized, and circuit problems cannot be discovered in time to take measures, which is not conducive to improving the safety of the use of DC contactors. Therefore, we propose a DC contactor with visualization to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a DC contactor with visualization, so as to solve the problem in the current market proposed by the above background technology that the on-off status of the main circuit cannot be understood in time, the circuit status is not visualized, the circuit problem cannot be discovered in time and measures cannot be taken, which is not conducive to improving the safety of the use of the DC contactor.

[0006] To achieve the above object, the utility model provides the following technical solution: a DC contactor with visualization, comprising a contactor housing, a contactor handle is installed at the upper end of the contactor housing, a shaft is connected to the interior of the upper section of the contactor housing, and a moving iron core is arranged at the lower end of the shaft;

[0007] A coil is installed on the inner side of the middle section of the contactor housing, a moving iron core is passed through the inner side of the coil, a moving contact plate assembly is installed on the outer side of the lower section of the moving iron core, and a moving contact is installed on the upper side of the end of the moving contact plate assembly;

[0008] A stationary contact plate assembly is installed inside the lower part of the contactor housing, and a stationary contact is installed on the lower side of the end of the stationary contact plate assembly;

[0009] The lower end of the moving iron core is connected to a buffer spring, the lower end of the buffer spring is connected to a micro switch top rod, the lower end of the micro switch top rod is connected to a forming switch, and the forming switch is provided with a first pin position and a second pin position;

[0010] An arc-extinguishing grid is installed inside the contactor housing.

[0011] Preferably, a mounting groove is provided inside the arc-extinguishing grid, and a heat dissipation column is connected inside the mounting groove.

[0012] Preferably, the movable touch panel assembly and the stationary touch panel assembly are arranged parallel to each other, and the position of the movable touch panel assembly and the position of the stationary touch panel assembly are arranged corresponding to each other. This design enables the movable touch panel assembly to contact the stationary touch panel assembly when moving upward, so that the main circuit is turned on.

[0013] Preferably, the arc-extinguishing grids are symmetrically arranged about the longitudinal center line of the moving iron core, and are evenly spaced and distributed near the ends of the moving contact plate assembly and the stationary contact plate assembly. This design can utilize the arc-extinguishing grids to extinguish the arc of the contactor.

[0014] Preferably, the heat dissipation column is installed through the inside of the arc extinguishing grid, and one end of the heat dissipation column away from the arc extinguishing grid passes through the side wall of the contactor housing. This design can use the heat dissipation column to dissipate heat and cool the arc extinguishing grid, thereby improving the cooling effect of the arc.

[0015] Preferably, the arc-extinguishing grids are arranged parallel to each other, and there are gaps between the arc-extinguishing grids at adjacent positions. This design can achieve gas circulation between the arc-extinguishing grids and enhance the arc cooling effect.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The visualized DC contactor, when the coil is energized, generates magnetic force to attract the moving iron core to drive the moving touch plate assembly to move upward and contact the stationary touch plate assembly, so that the main circuit is turned on. At this time, the buffer spring drives the micro switch top rod to move upward along with the moving iron core, so that the switch changes from normally open to normally closed. The on-off status of the main circuit can be judged by the closed state of the first and second pins of the travel switch, thereby meeting the visualization requirements of the main circuit, facilitating timely discovery of the operation status of the main circuit, and improving the safety of the contactor;

[0018] (2) The DC contactor with visualization utilizes arc extinguishing grids to achieve arc extinguishing effect of the contactor, and is used in conjunction with heat dissipation columns installed in the arc extinguishing grids to dissipate heat and cool the arc extinguishing grids, thereby accelerating the cooling effect of the arc and improving the arc extinguishing ability of the contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0021] Figure 3For this utility model Figure 1 A is an enlarged structural diagram;

[0022] Figure 4 It is a schematic diagram of the side section structure of the connection between the contactor housing and the arc extinguishing grid of the utility model;

[0023] Figure 5 It is a schematic diagram of the side section structure of the arc extinguishing grid of the utility model.

[0024] In the figure: 1. contactor housing; 2. contactor handle; 3. shaft; 4. moving iron core; 5. coil; 6. moving contact plate assembly; 7. moving contact; 8. stationary contact plate assembly; 9. stationary contact; 10. buffer spring; 11. micro switch top rod; 12. first pin position; 13. second pin position; 14. forming switch; 15. arc extinguishing grid; 16. mounting groove; 17. heat dissipation column. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 The utility model provides the following technical solutions: a DC contactor with visualization, comprising a contactor housing 1, a contactor handle 2 is installed at the upper end of the contactor housing 1, a shaft rod 3 is connected to the interior of the upper section of the contactor housing 1, and a moving iron core 4 is arranged at the lower end of the shaft rod 3; a coil 5 is installed on the inner side of the middle section of the contactor housing 1, and a moving iron core 4 is penetrated through the inner side of the coil 5, a moving touch plate assembly 6 is installed on the outer side of the lower section of the moving iron core 4, and a moving contact 7 is installed on the upper side of the end of the moving touch plate assembly 6; a static touch plate assembly 8 is installed inside the lower part of the contactor housing 1, and a static contact 9 is installed on the lower side of the end of the static touch plate assembly 8; a buffer spring 10 is connected to the lower end of the moving iron core 4, a micro switch top rod 11 is connected to the lower end of the buffer spring 10, and a forming switch 14 is connected to the lower end of the micro switch top rod 11, and a first pin position 12 and a second pin position 13 are arranged on the forming switch 14;

[0027] Furthermore, the movable touch panel assembly 6 and the stationary touch panel assembly 8 are arranged parallel to each other, and the position of the movable touch panel assembly 6 and the position of the stationary touch panel assembly 8 are arranged corresponding to each other, so that the movable touch panel assembly 6 can contact the stationary touch panel assembly 8 when moving upward, so that the main circuit is turned on;

[0028] The DC contactor is composed of a contactor housing 1, a contactor handle 2, a shaft 3, a moving iron core 4, a coil 5, a moving touch plate assembly 6, a moving contact 7, a stationary touch plate assembly 8, a stationary contact 9, a buffer spring 10, a micro switch top rod 11, a first pin 12, a second pin 13, a forming switch 14, an arc extinguishing grid 15 and other structures. When the coil 5 is energized, the coil 5 generates a magnetic force to attract the moving iron core 4, and the moving iron core 4 drives the moving touch plate assembly 6 installed on the outer side of the lower section to move upward, so that the moving touch plate assembly 6 contacts the stationary touch plate assembly 8, that is, the moving contact is controlled. The moving contact 7 installed on the upper side of the plate assembly 6 is in contact with the static contact 9 installed on the lower side of the static contact plate assembly 8, so that the main circuit is turned on. At this time, the movement of the moving iron core 4 drives the buffer spring 10 to move upward, and the buffer spring 10 drives the micro switch top rod 11 connected to the lower end to move upward, so that the micro switch top rod 11 also moves upward with the moving iron core 4. At this time, the switch 14 changes from normally open to normally closed. The on-off state of the main circuit can be judged by the closed state of the first pin 12 and the second pin 13 of the switch 14, so as to meet the visualization requirements of the main circuit.

[0029] Furthermore, an arc extinguishing grid 15 is installed inside the contactor housing 1; a mounting groove 16 is provided inside the arc extinguishing grid 15, and a heat dissipation column 17 is connected inside the mounting groove 16;

[0030] Specifically, the arc-extinguishing grids 15 are symmetrically arranged about the longitudinal center line of the moving iron core 4, and the arc-extinguishing grids 15 are evenly spaced and distributed near the ends of the moving contact plate assembly 6 and the stationary contact plate assembly 8, and the arc-extinguishing grids 15 can be used to achieve arc extinguishing of the contactor; the heat dissipation column 17 is installed through the inside of the arc-extinguishing grid 15, and the end of the heat dissipation column 17 away from the arc-extinguishing grid 15 passes through the side wall of the contactor housing 1, and the heat dissipation column 17 can be used to dissipate heat and cool the arc-extinguishing grid 15, thereby improving the cooling effect of the arc; the arc-extinguishing grids 15 are distributed in parallel with each other, and there are gaps between the arc-extinguishing grids 15 at adjacent positions, so that gas circulation between the arc-extinguishing grids 15 can be achieved, thereby enhancing the arc cooling effect;

[0031] When the contactor is working, the arc is extinguished by the arc extinguishing grid 15, and the heat dissipation column 17 installed inside the arc extinguishing grid 15 is used to conduct and dissipate the heat of the arc extinguishing grid 15, so that the temperature of the arc extinguishing grid 15 is low, the cooling effect of the arc is accelerated, and the arc extinguishing ability of the contactor is improved. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A DC contactor with visualization, comprising a contactor housing (1), characterized in that: A contactor handle (2) is installed at the upper end of the contactor housing (1), a shaft (3) is connected to the interior of the upper section of the contactor housing (1), and a moving iron core (4) is arranged at the lower end of the shaft (3); A coil (5) is installed on the inner side of the middle section of the contactor housing (1), a moving iron core (4) penetrates the inner side of the coil (5), a moving contact plate assembly (6) is installed on the outer side of the lower section of the moving iron core (4), and a moving contact (7) is installed on the upper side of the end of the moving contact plate assembly (6); A stationary contact plate assembly (8) is installed inside the lower part of the contactor housing (1), and a stationary contact (9) is installed on the lower side of the end of the stationary contact plate assembly (8); The lower end of the moving iron core (4) is connected to a buffer spring (10), the lower end of the buffer spring (10) is connected to a micro switch top rod (11), the lower end of the micro switch top rod (11) is connected to a forming switch (14), and the forming switch (14) is provided with a first pin position (12) and a second pin position (13); An arc extinguishing grid (15) is installed inside the contactor housing (1).

2. A DC contactor with visualization according to claim 1, characterized in that: The arc-extinguishing grid (15) is provided with a mounting groove (16) inside, and a heat dissipation column (17) is connected inside the mounting groove (16).

3. The DC contactor with visualization according to claim 1, characterized in that: The movable touch panel assembly (6) and the stationary touch panel assembly (8) are distributed in parallel with each other, and the position of the movable touch panel assembly (6) and the position of the stationary touch panel assembly (8) are distributed correspondingly to each other.

4. The DC contactor with visualization according to claim 1, characterized in that: The arc extinguishing grids (15) are symmetrically arranged about the longitudinal center line of the moving iron core (4), and the arc extinguishing grids (15) are evenly spaced and distributed at positions close to the ends of the moving contact plate assembly (6) and the stationary contact plate assembly (8).

5. The DC contactor with visualization according to claim 2, characterized in that: The heat dissipation column (17) is installed through the interior of the arc extinguishing grid (15), and one end of the heat dissipation column (17) away from the arc extinguishing grid (15) penetrates the side wall of the contactor housing (1).

6. The DC contactor with visualization according to claim 1, characterized in that: The arc extinguishing grids (15) are arranged parallel to each other, and there is a gap between the arc extinguishing grids (15) at adjacent positions.

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