Contactor structure capable of improving vibration and improving durability

Abstract

A contactor structure capable of improving vibration and improving durability comprises a static iron core and a movable iron core, and the static iron core is arranged in a base. The movable support is arranged above the movable iron core and located in the upper shell. Two supporting plates are arranged on the static iron core, and rubber spring washers are arranged on the supporting plates on the two sides of the static iron core; two symmetrical elastic sheets are arranged on the movable iron core; a coil is arranged between the static iron core and the movable iron core, and a return spring is arranged between the coil and the movable iron core; the static iron core is positioned through the supporting plate, and impact generated in the moving process of the movable iron core is absorbed through the rubber spring washer. The upper cover is arranged on the upper shell, and the upper cover, the upper shell and the outer expansion opening of the base are all of an easily-broken opening structure, so that dust entering the interior is reduced. According to the utility model, the supporting plate and the rubber spring washer are additionally arranged on the static iron core, so that the static iron core is effectively fixed, the deviation of the static iron core when the static iron core is impacted by the movable iron core is reduced, and the stability of the contact surface of the movable iron core and the static iron core is improved.

Description

Technical Field

[0001] This utility model relates to the field of contactor technology, and in particular to a contactor structure that improves vibration and enhances durability. Background Technology

[0002] As a power switching device, the contactor is mainly used as a power distribution switch to control the power supply or to control the start and stop of high-power motors. It is a key component in the field of automation control. The durability and reliability of the contactor play an indispensable role in the operation of equipment and the safety of personnel and property.

[0003] The electromagnetic circuit of a contactor consists of a moving iron core, a stationary iron core, a coil, a movable bracket, a contact group, and upper and lower housings. When working, current flows through the coil, generating a magnetomotive force. The moving and stationary iron cores become magnets, attracting each other and sticking together. The moving iron core drives the bracket downward, and the contacts on the bracket complete the work of connecting or disconnecting.

[0004] The vibration and impact of the moving and stationary iron cores during the operation of existing contactors have a significant impact on the structural performance of the products. At the same time, various dust and foreign objects in the environment where the contactors are used also pose a fatal threat to the service life of the contactors.

[0005] Therefore, we propose a contactor structure that improves vibration and enhances durability. Utility Model Content

[0006] In response to the shortcomings of the existing production technology, the applicant provides a contactor structure that improves vibration and enhances durability. By adding a support plate and rubber pads to the stationary iron core, the stationary iron core is effectively fixed, reducing the displacement of the stationary iron core when impacted by the moving iron core, and improving the stability of the contact surface between the moving and stationary iron cores.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A contactor structure for improving vibration and enhancing durability includes:

[0009] The stationary iron core is set in the base;

[0010] The upper housing is detachably connected to the base;

[0011] The moving iron core is positioned above the stationary iron core;

[0012] A movable bracket is positioned above the moving iron core and is located within the upper housing;

[0013] The stationary iron core has two support plates, and rubber spring pads are provided on both sides of the support plates; the moving iron core has two symmetrical spring pieces; a coil is provided between the stationary iron core and the moving iron core, and a return spring is provided between the coil and the moving iron core.

[0014] The stationary iron core is positioned by a support plate, and the impact generated during the movement of the moving iron core is absorbed by a rubber pad.

[0015] The upper shell is equipped with a cover, and the expansion openings of the cover, upper shell, and base all adopt an easy-break structure to reduce dust from entering the interior.

[0016] Its further features are:

[0017] Fixed contact groups are provided on both sides of the upper housing.

[0018] A movable contact group is provided above the movable bracket, and a movable contact spring is provided above the movable contact group.

[0019] The stationary iron core is provided with two first through holes, and a support plate is provided in each first through hole.

[0020] The moving iron core is provided with two second through holes, and each second through hole is provided with a spring piece.

[0021] A rubber sheet is provided at the bottom of the stationary iron core.

[0022] Both sides of the coil can be wired, with a wire connection port reserved on one side and an easily breakable structure on the other side.

[0023] The beneficial effects of this utility model are as follows:

[0024] This utility model has a compact and reasonable structure and is easy to operate. By adding a support plate and rubber spring pads to the stationary iron core, the stationary iron core is effectively fixed, reducing the displacement of the stationary iron core when it is impacted by the moving iron core, and improving the stability of the contact surface between the moving and stationary iron cores. The rubber spring pads effectively absorb the impact during the movement of the moving iron core, reducing vibration and also reducing the impact on the base.

[0025] In addition, this utility model also has the following advantages:

[0026] (1) The stationary iron core is positioned using two support plates and four rubber spring pads, which effectively reduces the shaking of the stationary iron core. This ensures that the pole faces of the moving iron core and the stationary iron core can make more effective contact, reduce magnetic leakage, and improve the reliability of the operation.

[0027] (2) The top cover, upper housing, and base are all equipped with easily perforated openings to reduce dust from entering the contactor, thereby reducing dust on the fixed and movable contact groups, minimizing the increase in contact resistance, and reducing abnormal heating. Wiring can be done on both sides of the coil. During normal use, one side of the wiring port is reserved, while the other side adopts an easily perforated structure to reduce dust and foreign objects from entering the coil, thereby reducing dust on the surface of the moving and stationary iron cores and reducing the vibration of the moving and stationary iron cores caused by dust. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model.

[0029] Figure 2 This is an exploded view of the present invention.

[0030] Figure 3 for Figure 1 The main view.

[0031] Figure 4 for Figure 1 Side view.

[0032] Figure 5 for Figure 1 Top view.

[0033] Figure 6 for Figure 5 Schematic diagram of the AA section.

[0034] Figure 7 This is a schematic diagram of the static iron core, support plate, and rubber spring pad of this utility model.

[0035] Figure 8 This is a schematic diagram of the stationary iron core of this utility model.

[0036] Figure 9 This is a schematic diagram of the moving iron core and spring of this utility model.

[0037] Figure 10 This is a schematic diagram of the spring sheet of this utility model.

[0038] The components are: 1. Top cover; 2. Upper shell; 3. Fixed contact group; 4. Movable bracket; 5. Movable contact spring; 6. Movable contact group; 7. Moving iron core; 8. Spring sheet; 9. Return spring; 10. Coil; 11. Rubber spring pad; 12. Support plate; 13. Stationary iron core; 14. Rubber sheet; 15. Base. Detailed Implementation

[0039] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0040] like Figures 1-10As shown, a contactor structure for improving vibration and enhancing durability includes an upper cover 1, an upper housing 2, a moving iron core 7, a stationary iron core 13, and a base 15.

[0041] The stationary iron core 13 is set in the base 15 and is fixedly connected to the base 15. A rubber sheet 14 is set at the bottom of the stationary iron core 13. The upper housing 2 is set above the base 15 and is detachably connected to the base 15. The upper cover 1 is set above the upper housing 2 and is detachably connected to the upper housing 2.

[0042] The top cover 1, the upper housing 2, and the base 15 are all provided with easy-to-break openings to reduce dust from entering the contactor, thereby reducing dust on the fixed contact group 3 and the movable contact group 6, minimizing the increase in contact resistance and reducing abnormal heating.

[0043] When dust accumulates on the fixed contact group 3 and the movable contact group 6, the contact resistance increases, causing abnormal heat generation.

[0044] Both sides of the coil 10 can be wired. During normal use, one side of the wire connection is reserved, while the other side adopts an easy-to-break structure to reduce the entry of dust and foreign objects into the coil 10, thereby reducing the dust on the surface of the moving iron core 7 and the stationary iron core 13, and reducing the vibration of the moving iron core 7 and the stationary iron core 13 caused by dust.

[0045] When the dust on the surfaces of the moving iron core 7 and the stationary iron core 13 increases, the dust causes vibration of the moving iron core 7 and the stationary iron core 13 and may even lead to burnout.

[0046] The stationary iron core 13 is provided with a first through hole, and a support plate 12 is provided in the first through hole of the stationary iron core 13. Rubber pads 11 are fitted on both sides of the support plate 12.

[0047] In one embodiment, the stationary iron core 13 is provided with two first through holes, and a support plate 12 is provided in each of the two first through holes.

[0048] The moving iron core 7 is positioned above the stationary iron core 13. A coil 10 is positioned between the moving iron core 7 and the stationary iron core 13. A return spring 9 is positioned between the coil 10 and the moving iron core 7.

[0049] The moving iron core 7 is provided with two second through holes, and each of the two second through holes of the moving iron core 7 is provided with a spring piece 8, which is arc-shaped.

[0050] A movable bracket 4 is provided above the moving iron core 7. The movable bracket 4 is located in the upper housing 2. A movable contact group 6 is provided above the movable bracket 4. A movable contact spring 5 is provided above the movable contact group 6. Fixed contact groups 3 are provided on both sides of the upper housing 2.

[0051] During its up-and-down movement, the moving iron core 7 continuously impacts the movable support 4, posing a risk of breakage to the movable support 4. By installing spring plates 8 on both sides of the moving iron core 7, the impact force of the moving iron core 7 during its up-and-down movement can be dispersed and balanced, reducing the impact on the movable support 4; moreover, the spring plates 8 on both sides more effectively restrict the moving iron core 7, thereby improving the stability of the moving iron core 7 during its up-and-down movement.

[0052] During frequent contactor operation, the moving iron core 7 continuously moves up and down, contacting the stationary iron core 13. The continuous impact of the moving iron core 7 may cause the stationary iron core 13 to wobble, preventing the contact surfaces of the moving iron core 7 and the stationary iron core 13 from fully fitting together. This results in an unstable contact area ratio, causing a decrease in the inductive reactance in the electromagnetic circuit, an increase in the excitation current in the electromagnetic circuit, an increase in the iron loss of the moving iron core 7 and the stationary iron core 13, and a decrease in service life. At the same time, the increase in the excitation current in the electromagnetic circuit increases the heat generated by the coil 10 according to Q=I2RT, which increases the risk of burnout.

[0053] By adding a support plate 12 and a rubber pad 11 to the stationary iron core 13, the stationary iron core 13 is effectively fixed, reducing the displacement of the stationary iron core 13 when impacted by the moving iron core 7, and improving the stability of the contact surface between the moving iron core 7 and the stationary iron core 13; the rubber pad 11 effectively absorbs the impact during the movement of the moving iron core 7, reducing vibration, and at the same time reducing the impact on the base 15.

[0054] In this application, by providing spring pieces 8 on both sides of the moving iron core 7, and symmetrically arranging the two spring pieces 8, the balance is improved, the impact on the movable support 4 during the up-and-down movement of the moving iron core 7 is reduced, and the buffering effect is better.

[0055] The stationary iron core 13 is positioned using two support plates 12 and four rubber spring pads 11, which effectively reduces the shaking of the stationary iron core 13. This ensures that the pole faces of the moving iron core 7 and the stationary iron core 13 can make more effective contact, reduce magnetic leakage, and improve the reliability of operation.

[0056] The expansion ports of the top cover 1, upper shell 2, and base 15 all adopt an easily perforated structure to reduce the risk of dust entering the product. This prevents excessive dust accumulation on the contact surfaces of the fixed contact group 3 and the movable contact group 6, thus preventing abnormal heating due to increased contact resistance. Furthermore, it prevents excessive dust accumulation on the surfaces of the moving iron core 7 and the stationary iron core 13, which could lead to incomplete contact, increased air gap between them, magnetic leakage, unstable engagement with noise, and increased temperature of the moving iron core 7 and the stationary iron core 13, posing a risk of coil 10 burning out. The easily perforated structure of the expansion ports reduces the amount of dust entering the product, thereby avoiding the risks caused by excessive dust.

[0057] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A contactor structure for improving vibration and enhancing durability, characterized in that, include: A stationary iron core (13) is set in the base (15); The upper housing (2) is detachably connected to the base (15); The moving iron core (7) is positioned above the stationary iron core (13); The movable bracket (4) is set above the moving iron core (7) and is located in the upper housing (2); Among them, the stationary iron core (13) is provided with two support plates (12), and the support plates (12) are provided with rubber spring pads (11) on both sides of the stationary iron core (13); the moving iron core (7) is provided with two symmetrical spring pieces (8); a coil (10) is provided between the stationary iron core (13) and the moving iron core (7), and a return spring (9) is provided between the coil (10) and the moving iron core (7); The stationary iron core (13) is positioned by the support plate (12), and the impact generated during the movement of the moving iron core (7) is absorbed by the rubber spring pad (11). The upper shell (2) is provided with an upper cover (1). The outer expansion openings of the upper cover (1), the upper shell (2) and the base (15) are all made of easy-to-break structure to reduce dust from entering the interior.

2. The contactor structure for improving vibration and enhancing durability as described in claim 1, characterized in that: Fixed contact groups (3) are provided on both sides of the upper housing (2).

3. The contactor structure for improving vibration and enhancing durability as described in claim 2, characterized in that: A movable contact group (6) is provided above the movable bracket (4), and a movable contact spring (5) is provided above the movable contact group (6).

4. The contactor structure for improving vibration and enhancing durability as described in claim 1, characterized in that: The stationary iron core (13) is provided with two first through holes, and a support plate (12) is provided in each first through hole.

5. The contactor structure for improving vibration and enhancing durability as described in claim 4, characterized in that: The moving iron core (7) is provided with two second through holes, and each second through hole is provided with a spring piece (8).

6. The contactor structure for improving vibration and enhancing durability as described in claim 1, characterized in that: A rubber sheet (14) is provided at the bottom of the stationary iron core (13).

7. The contactor structure for improving vibration and enhancing durability as described in claim 1, characterized in that: Both sides of the coil (10) can be wired. One side of the coil (10) retains a wire connection port, while the other side adopts an easy-to-break structure.

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