Electromagnet

Abstract

The utility model discloses an electromagnet which comprises a support body and a cover plate fixedly arranged on one side of the support body. An execution assembly is arranged in the support body, the bottom and the top of the support body are both provided with anti-seismic colloid, the bottom is further provided with a PIN terminal, the PIN terminal is electrically connected with the execution assembly, and the connecting position of the PIN terminal and the execution assembly is wrapped by an insulation connecting bridge. The execution assembly comprises a winding supporting piece, a limiting shaft sleeve, an iron core, a permanent magnet and a coil. The two ends of the limiting shaft sleeve are provided with limiting holes, and sliding limiting of the iron core is achieved through a guide block and a positioning base. The anti-seismic performance, the integration level and the installation convenience of the electromagnet can be improved, meanwhile, the leakproofness and the insulativity of the welding part are ensured, and the electromagnet is suitable for an automobile ABS system.

Description

Technical Field

[0001] This utility model relates to the technical field of electromagnets, and in particular to electromagnets. Background Technology

[0002] Electromagnets, as important electrical energy conversion devices, are widely used in automotive electronic systems, playing an indispensable role, especially in critical components such as anti-lock braking systems (ABS). During vehicle operation, electromagnets need to withstand complex vibration and shock environments, which places demands on their shock resistance. Simultaneously, with the increasing electrification of automobiles, the requirements for the integration, reliability, and ease of installation of electromagnets are also growing. Existing electromagnets typically use PIN terminals arranged on the sidewall for electrical connection. This method not only occupies a large space but may also lead to inconvenient installation and low overall integration. Furthermore, traditional electromagnets often lack effective sealing and insulation protection at the connection between the coil and the PIN terminals, easily leading to degraded electrical performance and even safety hazards due to exposed wires, making it difficult to meet the high reliability and safety requirements of modern automobiles.

[0003] On the other hand, the core actuators of an electromagnet typically include a winding support, an iron core, and a limiting structure. The design of these components directly affects the electromagnet's performance and stability. However, the existing sliding limiting design of the iron core is relatively simple, making it difficult to effectively control the sliding distance and ensure long-term reliability. Simultaneously, the arrangement of the coil on the winding support and its relationship with the permanent magnet also have room for optimization; improper design may lead to uneven magnetic field distribution or poor coil heat dissipation. Furthermore, in the practical application of automotive electromagnets, the rationality and sealing of the coil routing are equally crucial, but existing technologies often fail to adequately address coil routing, potentially affecting the overall sealing and insulation performance of the device. Therefore, there is an urgent need for an electromagnet design that can comprehensively address the above issues to improve its shock resistance, integration, sealing, and operational reliability, thereby better meeting the needs of modern automotive electronic systems. Utility Model Content

[0004] The purpose of this invention is to provide an electromagnet to overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An electromagnet includes a bracket body and a cover plate fixedly disposed on one side of the bracket body. An actuating component is installed inside the bracket body. Shock-absorbing gel is fixedly disposed at the bottom and top of the bracket body. A PIN terminal for insertion into automotive electrical components is fixedly disposed at the bottom of the bracket body. The PIN terminal is electrically connected to the actuating component, and the connection between the PIN terminal and the actuating component is sealed and covered with an insulating bridge. Since this invention is used in automotive ABS systems, and effective vibration prevention is required when installed inside the vehicle, shock-absorbing gel is included. While typical PIN terminals are located on the side wall, this invention directly places them at the bottom, allowing for direct insertion into the specific part of the vehicle during installation, resulting in higher integration and space saving.

[0007] To elaborate further, one end of the PIN terminal is soldered to the coil of the actuator component, and an insulating connecting bridge is fixedly installed at the solder joint between the PIN terminal and the actuator component coil. The insulating connecting bridge also prevents exposed wires at the connection point between the PIN terminal and the actuator component coil, improving sealing, insulation, and overall integration, making it convenient for users to install in automobiles.

[0008] To elaborate further, the execution component includes a winding support member, a limiting bushing is fixedly installed inside the winding support member, an iron core is slidably installed in the middle of the limiting bushing, and one end of the iron core passes through the limiting bushing and the bracket body and extends outward.

[0009] To elaborate further, both ends of the limiting sleeve are provided with inwardly recessed frustum-shaped limiting holes. A guide block is fixedly installed in the first limiting hole at the top end, and the guide block is fixedly connected to the bracket body. The iron core is provided with an outwardly extending first protrusion, which is used to abut against the limiting hole. The function of the guide block is to fix the position of the limiting sleeve and guide the sliding movement of the iron core.

[0010] To elaborate further, both ends of the limiting bushing are provided with inwardly recessed frustum-shaped limiting holes. The second limiting hole at the bottom end, when closed with the cover plate, forms a sliding chamber. A positioning seat is slidably installed within the sliding chamber, and the positioning seat is fixedly connected to one end of the iron core. The positioning seat has an outwardly extending second protrusion. The top end of the protrusion abuts against the second limiting hole to limit the iron core, and the second protrusion abuts against the inner wall of the cover plate to limit the iron core. The length of the sliding chamber determines the distance the iron core can slide.

[0011] To elaborate further, a slot is integrally formed on the outer center of the winding support, and a permanent magnet is fixedly installed in the slot. A coil is also wound on the outer wall of the winding support, with the coil arranged on both sides of the permanent magnet, and the coil is covered with a sealing colloid.

[0012] To elaborate further, a wiring groove for accommodating the coil is provided on one side of the bracket body, and the wiring groove is arranged adjacent to the PIN terminal. The wiring groove on the bracket body facilitates the embedding of the coil wiring into the bracket body, which is beneficial for the sealing and wrapping of the insulation connection bridge.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] First, the inclusion of anti-vibration colloid significantly enhances the electromagnet's shock resistance, enabling stable operation during vehicle movement. Second, the bottom arrangement of the PIN terminals simplifies installation and improves overall integration. Third, the sealed enclosure structure of the insulating connecting bridge improves the insulation and sealing of the welded joints, avoiding the risk of exposed wires. Finally, the synergistic effect of the limiting bushing, guide block, and positioning seat enables precise sliding and limiting of the iron core, ensuring the electromagnet's operational reliability. These innovative designs collectively enhance the electromagnet's applicability and performance in automotive ABS systems. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0017] Figure 3 This is a cross-sectional view of the present invention, ignoring the sealant and the coil.

[0018] Figure 4 This is a schematic diagram of the structure of this utility model, ignoring the sealant and the coil.

[0019] Attached diagram annotations: 1. Cover plate; 2. Bracket body; 3. PIN terminal; 4. Insulating connecting bridge; 5. Anti-vibration colloid; 6. Sealing colloid; 7. Iron core; 8. Permanent magnet; 9. Winding support; 10. Cable tray; 12. Guide block; 13. Limiting bushing; 15. Positioning seat. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0024] An electromagnet, the specific implementation of which is described in conjunction with the appendix. Figure 1 To be continued Figure 4 Please provide a detailed explanation. For example... Figure 1 and Figure 2 As shown, the electromagnet includes a cover plate 1, a bracket body 2, a PIN terminal 3, an insulating connecting bridge 4, an anti-vibration colloid 5, a sealing colloid 6, an iron core 7, a permanent magnet 8, a winding support 9, a wiring groove 10, a guide block 12, a limiting bushing 13, and a positioning seat 15. Through reasonable structural design and functional coordination, these components enable the high-performance application of the electromagnet in automotive ABS systems.

[0025] The support body 2, as the core load-bearing component of the electromagnet, has a cover plate 1 fixedly installed on one side. The cover plate 1 is connected to the support body 2 by bolts to ensure the stability of the overall structure. The support body 2 houses the actuation components, including a winding support 9, a limiting bushing 13, an iron core 7, a permanent magnet 8, and a coil. Anti-vibration colloids 5 are fixedly installed at both the bottom and top of the support body 2. These anti-vibration colloids 5 are made of rubber material with specific elasticity and damping characteristics and are integrally connected to the support body 2 through injection molding. The thickness of the anti-vibration colloid 5 ranges from 2mm to 5mm. When subjected to external vibrations, it absorbs vibration energy through the elastic deformation of the rubber material, thereby reducing the stress on the internal components. The maximum deformation range of the anti-vibration colloid 5 is from 0.5mm to 2mm. This design significantly improves the electromagnet's anti-vibration performance, enabling it to maintain stable operation during vehicle movement.

[0026] The bottom of the bracket body 2 is fixedly equipped with three PIN terminals 3 for plugging into automotive electrical components. Each PIN terminal 3 is electrically connected to an actuator. One end of the PIN terminal 3 is soldered to the coil of the actuator using a soldering process, with the solder joint diameter controlled between 1.5mm and 2mm. An insulating connecting bridge 4 is fixedly installed at the solder joint between the PIN terminal 3 and the actuator coil. The insulating connecting bridge 4 is made of epoxy resin and formed into a sealed structure through injection molding, with a wall thickness ranging from 0.8mm to 1.2mm. This design avoids exposed wires at the solder joint and improves overall sealing and insulation. The insulating connecting bridge 4 has a withstand voltage of not less than 1000V, meeting the safety requirements of automotive electrical systems. Furthermore, the PIN terminals 3 are directly located at the bottom of the bracket body 2, connecting to automotive electrical components via plug-in during installation, reducing the use of external wiring, improving integration, and saving space.

[0027] In the specific structure of the execution component, a limiting sleeve 13 is fixedly installed inside the winding support 9. An iron core 7 is slidably mounted in the middle of the limiting sleeve 13. One end of the iron core 7 passes through the limiting sleeve 13 and the support body 2 and extends outward. Both ends of the limiting sleeve 13 are provided with inwardly recessed frustum-shaped limiting holes. A guide block 12 is fixedly installed in the first limiting hole at the top end, and the guide block 12 is fixedly connected to the support body 2 via a threaded connection. The iron core 7 is provided with an outwardly extending first boss. The diameter of the first boss is larger than the minimum diameter of the first limiting hole, and the first boss abuts against the first limiting hole to achieve axial limiting of the iron core 7. The guide block 12 serves to fix the position of the limiting sleeve 13 and provide sliding guidance for the iron core 7.

[0028] The second limiting hole at one bottom end of the limiting sleeve 13 closes with the cover plate 1 to form a sliding chamber. A positioning seat 15 is slidably mounted inside the sliding chamber, and the positioning seat 15 is fixedly connected to one end of the iron core 7 via an interference fit. The positioning seat 15 has an outwardly extending second boss, the diameter of which is larger than the minimum diameter of the second limiting hole. The second boss abuts against the top end of the sliding chamber to achieve axial limiting on the other side of the iron core 7. Furthermore, the second boss abuts against the inner wall of the cover plate 1 to achieve radial limiting of the iron core 7. The length of the sliding chamber determines the distance the iron core 7 can slide, which ranges from 3mm to 8mm. The coordinated action of the limiting sleeve 13, the guide block 12, and the positioning seat 15 achieves precise sliding and limiting functions for the iron core 7, ensuring the reliable operation of the electromagnet.

[0029] A slot is integrally formed on the outer center of the winding support 9. The slot has a rectangular cross-section, a depth ranging from 2mm to 4mm, and a width ranging from 3mm to 6mm. A permanent magnet 8, made of neodymium iron boron material, is fixedly installed within the slot, with a magnetic energy product ranging from 35MGOe to 50MGOe. A coil is also wound around the outer wall of the winding support 9, arranged on both sides of the permanent magnet 8. The number of turns in the coil ranges from 500 to 800, and the wire diameter ranges from 0.2mm to 0.5mm. The coil is covered with a sealing compound 6, made of silicone material, formed into a uniform coating layer with a thickness ranging from 1mm to 2mm through an injection molding process. The sealing compound 6 not only improves the coil's waterproof performance but also enhances its mechanical strength and extends its service life.

[0030] A wiring groove 10 for accommodating the coil is provided on one side of the bracket body 2. The wiring groove 10 has a U-shaped cross-section, a depth ranging from 3mm to 5mm, and a width ranging from 4mm to 7mm. The wiring groove 10 is arranged adjacent to the PIN terminal 3, and the opening of the wiring groove 10 faces the inside of the bracket body 2. The wiring groove 10 on the bracket body 2 facilitates the embedding of the coil wiring into the bracket body 2 and helps the insulating connecting bridge 4 to seal and wrap the soldered parts. The design of the wiring groove 10 also optimizes the coil layout, reduces mutual interference between coils, and improves the overall performance of the electromagnet.

[0031] In actual operation, when the electromagnet is energized, the coil generates a magnetic field. This magnetic field, together with the permanent magnet 8, drives the iron core 7 to slide within the limiting sleeve 13. The sliding distance of the iron core 7 is determined by the length of the sliding chamber, ranging from 3mm to 8mm. The sliding of the iron core 7 causes the positioning seat 15 to move synchronously. The second protrusion of the positioning seat 15 abuts against the top end of the sliding chamber, limiting the maximum sliding distance of the iron core 7. At the same time, the first protrusion of the iron core 7 abuts against the first limiting hole, preventing the iron core 7 from dislodging from the limiting sleeve 13. The guide block 12 provides a sliding guide function for the iron core 7, ensuring that the movement trajectory of the iron core 7 is smooth and precise.

[0032] In the automotive ABS system, the electromagnet is connected to the automotive electrical components via the PIN terminal 3 at the bottom, completing the electrical connection. The shock-absorbing gel 5 absorbs vibration energy during vehicle operation, protecting internal components from vibration. The insulating connecting bridge 4 ensures the airtightness and insulation of the welded joints, preventing safety hazards caused by exposed wires. The sealing gel 6 protects the coil from moisture and dust, extending the electromagnet's lifespan. The entire electromagnet design fully considers shock resistance, integration, and ease of installation, enabling it to adapt to the complex operating conditions of automobiles.

[0033] In summary, this invention, through the rational design of key components such as the anti-vibration colloid 5, PIN terminal 3, insulating connecting bridge 4, and actuation components, solves the problems of insufficient anti-vibration performance, low integration, and complex installation of existing electromagnets in automotive ABS systems. The anti-vibration colloid 5 absorbs vibration energy through elastic deformation, reducing the stress on internal components; the bottom arrangement of the PIN terminal 3 simplifies the installation process and improves overall integration; the sealed covering structure of the insulating connecting bridge 4 improves the insulation and sealing of the welded parts; and the synergistic effect of the limiting bushing 13, guide block 12, and positioning seat 15 enables precise sliding and limiting functions of the iron core 7. These innovative designs collectively enhance the applicability and performance of electromagnets in automotive ABS systems.

[0034] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electromagnet, characterized in that: The device includes a bracket body and a cover plate fixedly installed on one side of the bracket body. An actuator is installed inside the bracket body. Anti-vibration colloids are fixedly installed at the bottom and top of the bracket body. A PIN terminal is fixedly installed at the bottom of the bracket body. The PIN terminal is electrically connected to the actuator. An insulating connecting bridge is provided to seal the connection between the PIN terminal and the actuator.

2. The electromagnet as described in claim 1, characterized in that: One end of the PIN terminal is soldered to the coil of the actuator component, and an insulating connecting bridge is fixedly installed at the solder joint between the PIN terminal and the actuator component coil.

3. The electromagnet as described in claim 1, characterized in that: The actuating component includes a winding support member, a limiting bushing is fixedly installed inside the winding support member, an iron core is slidably installed in the middle of the limiting bushing, and one end of the iron core passes through the limiting bushing and the support body and extends outward.

4. The electromagnet as described in claim 3, characterized in that: Both ends of the limiting bushing are provided with inwardly recessed frustum-shaped limiting holes. A guide block is fixedly provided in the first limiting hole at the top end. The guide block is fixedly connected to the bracket body. The iron core is provided with an outwardly extending first protrusion, which is used to abut against the limiting hole.

5. The electromagnet as described in claim 3, characterized in that: Both ends of the limiting bushing are provided with inwardly recessed frustum-shaped limiting holes. The second limiting hole at the bottom end is closed with the cover plate to form a sliding chamber. A positioning seat is slidably installed in the sliding chamber. The positioning seat is fixedly connected to one end of the iron core. The positioning seat is provided with an outwardly extending second protrusion. The top end of the protrusion positioning seat abuts against the second limiting hole to limit the iron core. The second protrusion abuts against the inner wall of the cover plate to limit the iron core.

6. The electromagnet as described in claim 3, characterized in that: The outer center of the winding support is integrally formed with a slot, in which a permanent magnet is fixedly installed. The outer wall of the winding support is also wound with a coil, which is arranged on both sides of the permanent magnet. The coil is also covered with a sealing colloid.

7. The electromagnet as described in claim 1, characterized in that: A wiring groove for accommodating the coil is provided on one side of the bracket body. The wiring groove is arranged adjacent to the PIN terminal. The wiring groove on the bracket body facilitates the embedding of the coil wiring into the bracket body, which is beneficial for the sealing and wrapping of the insulation connection bridge.

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