A starter electromagnetic switch

Abstract

The application discloses a starter electromagnetic switch, a fixing part is inserted into an installation shell, and the fixing part is integrally fixed through a fixing cover which is screwed at the bottom end of the installation shell; a movable part is inserted into the top end of the fixing part in an up-down movable mode, and the movable part is led out to the external environment through the top end of the installation shell; an air hole is arranged on the side wall of the installation shell and is used for connecting the internal space of the installation shell with the external environment; the movable part comprises a mounting table and a moving iron core; the moving iron core is vertically installed on the small surface of the mounting table and is arranged in the magnetic force adsorption range in the opposite mode of the static iron core; the fixing part comprises a mounting frame, a static iron core and a coil; the static iron core is vertically installed on the mounting frame, and the coil is wound on the static iron core; the inner side of the fixing cover is recessed and is provided with a permanent magnet. The application has the beneficial effects of high production and assembly efficiency, convenient replacement of damaged parts and avoidance of the influence of iron filings and water vapor on the working process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of starter and its accessories, in particular to a starter electromagnetic switch. BACKGROUND

[0002] The electromagnetic switch refers to a kind of switch that when electromagnet coil is energized, electromagnetic attraction is generated, movable core pushes or pulls switch contact to close, thereby connecting the controlled circuit or mechanical structure.

[0003] The traditional electromagnetic switch is complicated in assembly and disassembly process during production or maintenance, and it is difficult to efficiently assemble and maintain, and the moisture contained in the shell of the traditional electromagnetic switch and the iron filings generated by the wear of moving iron core and static iron core during movement can easily affect the contact effect of moving iron core and static iron core, and the service life is relatively low. SUMMARY

[0004] In view of the above deficiencies existing in the prior art, the present application aims to provide a starter electromagnetic switch with high production and assembly efficiency, which is convenient to replace damaged parts and avoids the influence of iron filings and moisture on the working process.

[0005] The technical scheme adopted by the present application to achieve the above-mentioned purpose is: a starter electromagnetic switch, comprising a mounting shell, a fixed part and a movable part, the fixed part is inserted into the mounting shell, and the fixed part is integrally fixed by a fixed cover rotatably connected to the bottom end of the mounting shell, the movable part is inserted into the top end of the fixed part in an up-down movable manner, and the movable part is connected to the outside environment through the top end of the mounting shell, and the side wall of the mounting shell is provided with a ventilation hole for connecting the internal space of the mounting shell with the external environment; the internal space of the mounting shell is a hollow cylindrical space, and the top opening of the hollow cylindrical space is small; the mounting shell comprises an outer layer side wall and an inner layer side wall fixed at the top and bottom; the movable part comprises a mounting table and a moving iron core, the moving iron core is vertically installed on the small surface of the mounting table and is arranged opposite to the static iron core in the magnetic adsorption range; the fixed part comprises a mounting frame, a static iron core and a coil, the static iron core is vertically installed on the mounting frame, and the coil is wound on the static iron core, and the inner side of the fixed cover is recessed and provided with a permanent magnet.

[0006] The fixed part and the movable part are inserted into the inner side of the mounting shell from bottom to top, the movable part is connected to the outside environment through the top opening of the hollow cylindrical space, and the fixed part is nested in the hollow cylindrical space and is fixed by the fixed cover at the bottom.

[0007] The inner side wall of the hollow cylindrical space and the mounting frame of the fixed part are vertically provided with a sliding rail and a sliding groove which are nested with each other.

[0008] The mounting frame body is horizontally fixed from top to bottom with a first mounting plate, a second mounting plate and a third mounting plate, the movable part is inserted on the first mounting plate, the static iron core is vertically fixed between the second mounting plate and the third mounting plate, the second mounting plate and the third mounting plate are provided with material passing ports and are connected with the bottom end of the mounting shell in a vertical manner relative to the mounting periphery of the static iron core, and the third mounting plate is provided with a wire passing hole.

[0009] The dynamic iron core is fixed at the center of the lower surface of the mounting table, and the insertion rods are uniformly fixed at the edge positions of the dynamic iron core in a vertical manner, the first mounting plate is provided with an opening for inserting the dynamic iron core and the insertion rods, and the dynamic iron core is vertically provided with a return spring, and the upper and lower ends of the return spring are connected between the lower surface of the mounting table and the upper surface of the first mounting plate.

[0010] The top end opening positions of the material passing ports of each group are provided in a slope manner, and the material passing ports are located at the lowest end of the slope positions.

[0011] The outer layer side wall wraps the inner layer side wall, and an air gap is arranged between the two, a plurality of air vents are uniformly arranged on the inner layer side wall near the top end position and are connected with the air gap and the insertion space, and a plurality of air vents are uniformly arranged on the outer layer side wall near the bottom end position and are connected with the air gap and the external environment.

[0012] When the fixed part is mounted in the fixed mounting shell, the opening is arranged at the relative position of the mounting frame body and the air vent arranged on the inner layer side wall.

[0013] The upper surface of the mounting table is fixed with a mounting block connected with a fork structure.

[0014] The beneficial effects of the present application are that in the assembly process, the fixed part and the movable part are inserted into the mounting shell from bottom to top and are fixed by the fixed cover, which is convenient for production line production and assembly, and also convenient for replacing the damaged electromagnetic switch;

[0015] In the use process, when the coil is energized to cause the static iron core to attract the dynamic iron core to move and collide with each other or the iron filings generated by long-term use can be discharged to the lowermost end through the material passing port, and then adsorbed on the permanent magnet, thereby avoiding the generation of static electricity and improving the service life;

[0016] When there is water vapor in the hollow cylindrical space inside the mounting shell, the coil is energized and the interaction between the dynamic iron core and the static iron core can generate heat, which can discharge the water vapor in the mounting shell through the air vent and the air gap, and the setting position of the air vent on the outer layer side wall and the inner layer side wall can avoid the input of water vapor in the external environment into the inside of the mounting shell. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only illustrate some of the embodiments of the present application, and other drawings can be obtained by those of ordinary skill in the art without any creative effort based on these drawings.

[0018] Fig. 1 The structure diagram of the installation shell in the present application;

[0019] Fig. 2 The structure diagram of the combination of the fixed part and the movable part in the present application;

[0020] Fig. 3 The structure diagram of the whole in the present application.

[0021] In the figure: 1 installation shell, 2 fixed cover, 3 air hole, 4 installation table, 5 moving iron core, 6 installation frame body, 7 static iron core, 8 coil, 9 permanent magnet, 10 hollow cylindrical space, 11 first installation plate, 12 second installation plate, 13 third installation plate, 14 material passing port, 15 plug-in rod, 16 reset spring, 17 outer layer side wall, 18 inner layer side wall, 19 air gap, 20 installation block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0023] Please refer to Figs. 1-3 A starter electromagnetic switch, comprising an installation shell 1, a fixed part, and a movable part, the fixed part is inserted into the installation shell 1, and the whole fixed part is fixed by a fixed cover 2 which is screwed at the bottom end of the installation shell 1, the movable part is inserted into the top end of the fixed part in a movable manner, and the movable part is led out to the external environment from the top end of the installation shell 1, an air hole 3 is arranged on the side wall of the installation shell 1 for connecting the internal space of the installation shell 1 with the external environment; the movable part comprises an installation table 4 and a moving iron core 5, the moving iron core 5 is vertically installed on the small surface of the installation table 4 and is arranged opposite to the static iron core 7 in the magnetic adsorption range; the fixed part comprises an installation frame body 6, a static iron core 7, and a coil 8, the static iron core 7 is vertically installed on the installation frame body 6, and the coil 8 is wound on the static iron core 7, the inner side of the fixed cover 2 is recessed and a permanent magnet 9 is arranged in the recess.

[0024] In this invention, the interior of the mounting shell 1 is configured as a hollow cylindrical space 10 with a small opening at the top. The fixed part and the movable part are inserted into the inner side of the mounting shell 1 from bottom to top. The movable part passes through the opening at the top of the hollow cylindrical space 10. The fixed part is nested in the hollow cylindrical space 10 and is fixed at the bottom by the fixed cover 2, ensuring that the fixed part can be stably installed inside the mounting shell 1 and that the movable part can pass through the top of the mounting shell 1 for installation.

[0025] The hollow cylindrical space 10 has vertically nested slide rails and grooves between its inner sidewall and the mounting frame 6, ensuring that the fixed part is stably installed in the hollow cylindrical space 10 inside the mounting shell 1, and preventing horizontal rotation and movement during operation.

[0026] The mounting frame 6 is horizontally fixed from top to bottom with a first mounting plate 11, a second mounting plate 12, and a third mounting plate 13. A movable part is inserted into the first mounting plate 11. The stationary iron core 7 is vertically fixed between the second mounting plate 12 and the third mounting plate 13 to ensure the stable installation of the stationary iron core 7. The second mounting plate 12 and the third mounting plate 13 are vertically provided with a material passage 14 relative to the outer periphery of the stationary iron core 7 and are connected to the bottom end of the mounting shell 1. When the coil 8 is energized, the stationary iron core 7 attracts the moving iron core 5 to move and collide with each other, or the iron filings generated by long-term use can be passed out through the material passage 14 to the bottom end and then adsorbed on the permanent magnet 9, avoiding the generation of static electricity and improving its service life. The third mounting plate 13 is provided with a wire passage hole to facilitate the energization of the coil 8.

[0027] A moving iron core 5 is fixed at the center of the lower side of the mounting platform 4, and vertically arranged plug rods 15 are evenly fixed at its edge. An opening is provided on the first mounting plate 11 for inserting the moving iron core 5 and the plug rods 15. A return spring 16 is vertically arranged around the moving iron core 5, and the upper and lower ends of the return spring 16 are respectively connected between the lower surface of the mounting platform 4 and the upper surface of the first mounting plate 11, so as to ensure that the moving iron core 5 drives the mounting platform 4 to move up and down stably under the adsorption of the stationary iron core 7 or the reset action of the return spring 16.

[0028] Each group of feed inlets 14 has a sloping opening at the top, with the feed inlet 14 located at the lowest end of the slope, ensuring that all iron filings generated during the operation can fall into the fixed cover 2 and be attracted to the permanent magnet 9.

[0029] The mounting housing 1 includes an outer sidewall 17 and an inner sidewall 18 fixed at the top and bottom ends. The outer sidewall 17 wraps around the inner sidewall 18 and a ventilation gap 19 is provided between the two. The inner sidewall 18 has multiple sets of ventilation ports evenly opened near the top and connects the ventilation gap 19 to the insertion space. The outer sidewall 17 has multiple sets of ventilation ports evenly opened near the bottom and connects the ventilation gap 19 to the external environment. When there is water vapor in the hollow cylindrical space 10 inside the mounting housing 1, the coil 8 is energized and the interaction between the moving iron core 5 and the stationary iron core 7 can generate heat, which will discharge the water vapor through the ventilation ports and ventilation gap 19. At the same time, the position of the ventilation ports on the outer sidewall 17 and the inner sidewall 18 can prevent water vapor in the external environment from entering the inside of the mounting housing 1.

[0030] When the fixed part is installed inside the fixed mounting housing 1, the mounting frame 6 and the ventilation port provided on the inner side wall 18 are provided with an opening at the relative position;

[0031] Mounting block 20 with connecting fork structure is fixed to the upper surface of mounting platform 4.

[0032] The working principle of this invention is as follows: During the assembly process, the fixed part and the movable part are inserted into the mounting housing 1 from bottom to top and fixed by the fixing cover 2, which facilitates production line production and assembly, and also facilitates the replacement of damaged electromagnetic switches.

[0033] During use, when the coil 8 is energized, the stationary iron core 7 attracts the moving iron core 5 to move and collide with each other, or the iron filings generated by long-term use can be discharged from the feed port 14 to the bottom and then adsorbed on the permanent magnet 9, thus avoiding the generation of static electricity and improving its service life.

[0034] When there is water vapor in the hollow cylindrical space 10 inside the mounting housing 1, the energization of the coil 8 and the interaction between the moving iron core 5 and the stationary iron core 7 can generate heat, which will discharge the water vapor through the vent and the vent gap 19. At the same time, the location of the vents on the outer side wall 17 and the inner side wall 18 can prevent water vapor from the external environment from entering the inside of the mounting housing 1.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A starter electromagnetic switch, characterized in that: The system includes a mounting shell (1), a fixed part, and a movable part. The fixed part is inserted into the mounting shell (1) and is fixed as a whole by a fixing cap (2) screwed onto the bottom of the mounting shell (1). The movable part is inserted into the top of the fixed part in a vertically movable manner and extends to the external environment from the top of the mounting shell (1). The side wall of the mounting shell (1) is provided with a vent (3) to connect the internal space of the mounting shell (1) with the external environment. The interior of the mounting shell (1) is set as a hollow cylindrical space (10) with a small opening at the top. The shell (1) includes an outer sidewall (17) and an inner sidewall (18) fixed at the upper and lower ends; the fixed part includes a mounting frame (6), a stationary iron core (7), and a coil (8). The stationary iron core (7) is vertically mounted on the mounting frame (6) and the coil (8) is wound on the stationary iron core (7). The inner side of the fixed cover (2) is grooved and a permanent magnet (9) is provided therein; the movable part includes a mounting platform (4) and a moving iron core (5). The moving iron core (5) is vertically mounted on the small surface of the mounting platform (4) and is positioned opposite to the stationary iron core (7) within the magnetic adsorption range.

2. A starter electromagnetic switch according to claim 1, characterized in that: The fixed part and the movable part are inserted into the inner side of the mounting shell (1) from bottom to top. The movable part is opened through the top of the hollow cylindrical space (10). The fixed part is nested in the hollow cylindrical space (10) and the bottom is fixed by the fixed cover (2).

3. A starter electromagnetic switch according to claim 2, characterized in that: The hollow cylindrical space (10) has vertically nested slide rails and grooves between its inner sidewall and the fixed part mounting frame (6).

4. A starter electromagnetic switch according to claim 2, characterized in that: The mounting frame (6) is horizontally fixed from top to bottom with a first mounting plate (11), a second mounting plate (12), and a third mounting plate (13). The movable part is inserted into the first mounting plate (11). The stationary iron core (7) is vertically fixed between the second mounting plate (12) and the third mounting plate (13). The second mounting plate (12) and the third mounting plate (13) are vertically provided with a material passage (14) relative to the stationary iron core (7) and are connected to the bottom end of the mounting shell (1). The third mounting plate (13) is provided with a wire passage hole.

5. A starter electromagnetic switch according to claim 4, characterized in that: The moving iron core (5) is fixed at the center of the lower side of the mounting platform (4), and vertically arranged plug rods (15) are uniformly fixed at its edge. The first mounting plate (11) has an opening for inserting the moving iron core (5) and the plug rods (15). A return spring (16) is vertically arranged around the moving iron core (5), and the upper and lower ends of the return spring (16) are respectively connected between the lower surface of the mounting platform (4) and the upper surface of the first mounting plate (11).

6. A starter electromagnetic switch according to claim 4, characterized in that: The top opening of each feed inlet (14) is set at a slope, and the feed inlet (14) is located at the lowest end of the slope.

7. A starter electromagnetic switch according to claim 1, characterized in that: The outer sidewall (17) wraps the inner sidewall (18) and a ventilation gap (19) is provided between them. The inner sidewall (18) has multiple sets of ventilation ports evenly opened near the top and connects the ventilation gap (19) with the insertion space. The outer sidewall (17) has multiple sets of ventilation ports evenly opened near the bottom and connects the ventilation gap (19) with the external environment.

8. A starter electromagnetic switch according to claim 7, characterized in that: When the fixed part is installed inside the fixed mounting shell (1), the mounting frame (6) and the ventilation port on the inner side wall (18) are respectively provided with an opening.

9. A starter electromagnetic switch according to claim 1, characterized in that: The mounting platform (4) has a mounting block (20) with a connecting fork structure fixed on its upper surface.

Images