A sealed bushing structure type starter electromagnetic switch

Abstract

The utility model relates to electromagnetic switch technical field especially with sealed bush structure formula starter electromagnetic switch, the coil pipe below is connected with starter electromagnetic switch casing fixedly, starter electromagnetic switch casing inside is equipped with sealing structure, starter electromagnetic switch casing top is connected with bush threadedly, moving iron core top is connected with guide rod fixedly, the guide rod outer wall sleeve has reset spring. This sealed bush structure formula starter electromagnetic switch, through the cooperation of bush and sealing structure, the elastic ring is put into the installation groove respectively, then the first sealing washer and the second sealing washer are on the elastic ring of corresponding size, then the operator bush is screwed in the inside of starter electromagnetic switch casing, the elastic ring adds the additional elasticity, makes the first sealing washer and the second sealing washer always abut with the bush tightly, can reduce the water vapor and dust into starter electromagnetic switch casing, the condition of failure appears.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic switch technology, specifically to a starter electromagnetic switch with a sealed bushing structure. Background Technology

[0002] Some cars use a geared motor as their starter motor, which uses an electromagnetic switch to connect or disconnect the power supply circuit to enable the starter motor to work and shut down. An electromagnetic switch is a switch controlled by an electromagnet, that is, a combination of an electromagnet and a switch.

[0003] For example, a car starter solenoid switch with announcement number "CN213071009U" has a sealing ring made of nitrile rubber on the contact surface between the flange and the switch cover, which improves the sealing performance of the solenoid switch and provides good sealing effect. Multiple grooves are provided on the outer end face of the stationary contact to reduce the occurrence of arcing between the stationary and moving contacts at the moment of disconnection, protecting the contact surface and thus ensuring the stability of the switch operation. However, with prolonged use, the sealing ring is prone to aging. When the sealing ring needs to be replaced, the flange must be broken before it can be removed. During installation, scratches can easily create sealing gaps, allowing moisture and dust to enter, increasing the risk of malfunction. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art by proposing a starter electromagnetic switch with a sealed bushing structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: Design a starter electromagnetic switch with a sealed bushing structure, including a starter electromagnetic switch housing and a moving iron core. The moving iron core is installed on the lower part of the inner wall of the starter electromagnetic switch housing. The outer wall of the moving iron core is slidably connected to a coil tube. The lower part of the coil tube is fixedly connected to the starter electromagnetic switch housing. The starter electromagnetic switch housing has a sealing structure inside. The upper part of the starter electromagnetic switch housing is threadedly connected to the bushing. The upper part of the moving iron core is fixedly connected to a guide rod. A return spring is sleeved on the outer wall of the guide rod.

[0006] This setting: After the coil tube is energized, the generated electromagnetic field drives the moving iron core to move. During the movement, the moving iron core pushes the guide rod forward with the moving iron core and compresses the return spring.

[0007] Preferably, the two ends of the reset spring are fixedly connected to the starter solenoid switch housing and the moving iron core, respectively, and a moving contact piece is fixedly connected above the guide rod.

[0008] This setting: The movement of the moving iron core drives the movement of the moving contact piece.

[0009] Preferably, the sealing structure includes a mounting groove, which is machined on the upper part of the inner wall of the starter solenoid switch housing. The inner wall of the mounting groove is inserted into the first sealing ring, the second sealing ring, and the elastic ring. The first sealing ring and the second sealing ring are respectively abutted against the bushing and the elastic ring on both sides.

[0010] This feature allows for a double seal through the first and second sealing rings.

[0011] Preferably, the lower part of each elastic ring is pressed against the starter solenoid switch housing.

[0012] This setting allows the elastic ring to consistently apply elastic force to both the first and second sealing rings.

[0013] Preferably, a terminal block is installed on the upper part of the inner wall of the bushing, and a stationary contact piece is fixedly connected below the terminal block.

[0014] This setting allows the circuit to be connected through the cooperation of the stationary and moving contacts.

[0015] Preferably, a wear-resistant sleeve is installed below the inner wall of the bushing.

[0016] This feature: The wear-resistant sleeve can help prevent wear and increase its service life.

[0017] The present invention proposes a starter solenoid switch with a sealing bushing structure. The advantages are as follows: through the cooperation of the bushing and the sealing structure, the elastic rings are respectively placed into the mounting grooves. Then, the first sealing ring and the second sealing ring are placed on the elastic ring of the corresponding size. After that, the operator tightens the bushing inside the starter solenoid switch housing. The elastic ring applies additional elastic force, so that the first sealing ring and the second sealing ring are always in contact with the bushing. This can reduce the entry of moisture and dust into the starter solenoid switch housing and the occurrence of malfunctions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A partial front sectional view; Figure 3 for Figure 2 A magnified view of part A in the diagram; Figure 4 A three-dimensional schematic diagram of the bushing; Figure 5 This is a partial cross-sectional view of the starter solenoid switch housing.

[0019] In the diagram: 1. Starter solenoid switch housing, 2. Coil tube, 3. Sealing structure, 301. Mounting groove, 302. First sealing ring, 303. Second sealing ring, 304. Mounting groove, 4. Guide rod, 5. Stationary contact piece, 6. Terminal block, 7. Moving contact piece, 8. Wear-resistant sleeve, 9. Return spring, 10. Moving iron core, 11. Bushing. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: See attached document Figure 1-5 In this embodiment, a starter electromagnetic switch with a sealed bushing structure includes a starter electromagnetic switch housing 1 and a moving iron core 10. The moving iron core 10 is installed on the lower part of the inner wall of the starter electromagnetic switch housing 1. The outer wall of the moving iron core 10 is slidably connected to the coil tube 2. The lower part of the coil tube 2 is fixedly connected to the starter electromagnetic switch housing 1. A sealing structure 3 is provided inside the starter electromagnetic switch housing 1. The upper part of the starter electromagnetic switch housing 1 is threadedly connected to the bushing 11. The upper part of the moving iron core 10 is fixedly connected to the guide rod 4. A return spring 9 is sleeved on the outer wall of the guide rod 4. When the coil tube 2 is energized, the generated electromagnetic field drives the moving iron core 10 to move upward. During the movement, the moving iron core 10 pushes the guide rod 4 forward together with the moving iron core 10.

[0021] The two ends of the reset spring 9 are fixedly connected to the starter solenoid switch housing 1 and the moving iron core 10, respectively. A moving contact 7 is fixedly connected above the guide rod 4. A terminal 6 is installed above the inner wall of the bushing 11. A stationary contact 5 is fixedly connected below the terminal 6. A wear-resistant sleeve 8 is installed below the inner wall of the bushing 11.

[0022] The sealing structure 3 includes a mounting groove 304, which is machined on the upper part of the inner wall of the starter solenoid switch housing 1. The inner wall of the mounting groove 304 is inserted into the first sealing ring 302, the second sealing ring 303, and the elastic ring 301. The first sealing ring 302 and the second sealing ring 303 have different sizes, and the elastic ring 301 has the same size as the first sealing ring 302 and the second sealing ring 303. The first sealing ring 302 and the second sealing ring 303 are respectively pressed against the bushing 11 and the elastic ring 301 on both sides. The lower part of the ring 301 is tightly abutted against the starter solenoid switch housing 1. The elastic rings 301 are respectively placed into the mounting grooves 304. Then, the first sealing ring 302 and the second sealing ring 303 are placed on the elastic rings 301 of the corresponding size. After that, the operator tightens the bushing 11 inside the starter solenoid switch housing 1. The elastic rings 301 apply additional elastic force to ensure that the first sealing ring 302 and the second sealing ring 303 are always tightly abutted against the bushing 11. This can reduce the entry of moisture and dust into the starter solenoid switch housing and prevent malfunctions.

[0023] Working principle: The operator places the spring rings 301 into the mounting slots 304 respectively, and then places the first sealing ring 302 and the second sealing ring 303 on the spring rings 301 of the corresponding size. After that, the operator tightens the bushing 11 inside the starter solenoid switch housing 1. The spring rings 301 apply additional elastic force to ensure that the first sealing ring 302 and the second sealing ring 303 are always in contact with the bushing 11, which can reduce the entry of moisture and dust into the starter solenoid switch housing and prevent malfunctions. When in use, after the coil tube 2 is energized, the generated electromagnetic field drives the moving iron core 10 to move upward. During the movement, the moving iron core 10 pushes the guide rod 4 forward along with the moving iron core 10 until the stationary contact 5 and the moving contact 7 come into contact. During this process, the return spring 9 (in special cases, spring damping can be installed at both ends of the return spring) is continuously compressed. After the two stationary contact 5 and the moving contact 7 are connected, the circuit connected to the terminal 6 is closed. When not in use, after the coil tube 2 is de-energized, the electromagnetic field disappears, the circuit is disconnected, the reset spring 9 deforms, and drives the moving iron core 10 and moving contact 7 and other components to reset.

[0024] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A starter electromagnetic switch with a sealed bushing structure, comprising a starter electromagnetic switch housing (1) and a moving iron core (10), wherein the moving iron core (10) is installed on the lower part of the inner wall of the starter electromagnetic switch housing (1), characterized in that: The outer wall of the moving iron core (10) is slidably connected to the coil tube (2), the lower part of the coil tube (2) is fixedly connected to the starter electromagnetic switch housing (1), the starter electromagnetic switch housing (1) is provided with a sealing structure (3), the upper part of the starter electromagnetic switch housing (1) is threadedly connected to the bushing (11), the upper part of the moving iron core (10) is fixedly connected to the guide rod (4), the outer wall of the guide rod (4) is sleeved with a reset spring (9), the sealing structure (3) includes a mounting groove (304), the mounting groove (304) is machined on the upper part of the inner wall of the starter electromagnetic switch housing (1), the inner wall of the mounting groove (304) is inserted into the first sealing ring (302), the second sealing ring (303) and the elastic ring (301), the first sealing ring (302) and the second sealing ring (303) are respectively abutted against the bushing (11) and the elastic ring (301) on both sides.

2. The starter electromagnetic switch with a sealed bushing structure according to claim 1, characterized in that: The two ends of the reset spring (9) are fixedly connected to the starter electromagnetic switch housing (1) and the moving iron core (10) respectively, and the guide rod (4) is fixedly connected to the upper part of the moving contact piece (7).

3. The starter electromagnetic switch with a sealed bushing structure according to claim 2, characterized in that: The elastic ring (301) is pressed against the starter solenoid switch housing (1) below.

4. The starter electromagnetic switch with a sealed bushing structure according to claim 3, characterized in that: A terminal block (6) is installed on the upper part of the inner wall of the bushing (11), and a stationary contact piece (5) is fixedly connected below the terminal block (6).

5. The starter electromagnetic switch with a sealed bushing structure according to claim 1, characterized in that: A wear-resistant sleeve (8) is installed below the inner wall of the bushing (11).

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