Magnetic suspension bushing

Abstract

The utility model relates to a magnetic suspension bushing which comprises a metal inner pipe, main body rubber and a metal outer pipe, the main body rubber is arranged in the middle of the peripheral face of the metal inner pipe, the metal outer pipe is arranged on the peripheral face of the main body rubber, and a first space is formed among the first end of the metal inner pipe, the first end face of the main body rubber and the first end of the metal outer pipe. A second space is formed among the second end of the metal inner pipe, the second end face of the main body rubber and the second end of the metal outer pipe; the magnetic suspension lining further comprises a plurality of magnetic control assemblies, each magnetic control assembly comprises an iron core, an electrified coil and a permanent magnet, the iron cores are arranged on the outer circumferential face of the metal inner pipe, the electrified coils are wound on the iron cores, and the permanent magnets are arranged on the inner side face of the metal outer pipe and correspond to the iron cores. The magnetic control assembly further comprises a first anti-collision rubber pad arranged at the end of the iron core and a second anti-collision rubber pad arranged at the end of the permanent magnet. The shock absorption device has a better shock absorption effect, and the controllability and comfort of a vehicle can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile shock absorption, in particular to a magnetic suspension bushing for automobile shock absorption. Background Art

[0002] Shock-absorbing bushings are a crucial component of automotive suspension systems, providing cushioning and vibration reduction, and enhancing ride comfort. Magnetic levitation bushings are a new type of active bushing with adjustable stiffness, capable of adjusting stiffness based on road conditions, improving vehicle handling and comfort. Existing magnetic levitation bushings still have room for improvement to enhance their performance. Summary of the Invention

[0003] The purpose of the utility model is to provide a magnetic suspension bushing with better shock absorption performance.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A magnetic levitation bushing comprises a metal inner tube, a main rubber, and a metal outer tube, wherein the main rubber is arranged in the middle of the outer circumference of the metal inner tube, and the metal outer tube is arranged on the outer circumference of the main rubber. A first space is formed between the first end of the metal inner tube, the first end surface of the main rubber, and the first end of the metal outer tube, and a second space is formed between the second end of the metal inner tube, the second end surface of the main rubber, and the second end of the metal outer tube; the magnetic levitation bushing also includes multiple groups of magnetic control components arranged in the first space and the second space, and the magnetic control components include an iron core, an energized coil, and a permanent magnet. The iron core is arranged on the outer circumference of the metal inner tube, the energized coil is wound on the iron core, and the permanent magnet is arranged on the inner side surface of the metal outer tube and corresponds to the iron core.

[0006] The metal inner tube, the main rubber, and the metal outer tube are coaxially arranged.

[0007] The axial direction of the iron core, the axial direction of the energized coil, and the axial direction of the permanent magnet are all arranged along the radial direction of the metal outer tube.

[0008] The magnetron assembly further includes a first anti-collision rubber pad arranged at the end of the iron core and a second anti-collision rubber pad arranged at the end of the permanent magnet.

[0009] The first anti-collision rubber pad and the second anti-collision rubber pad are both hemispherical.

[0010] Four groups of the magnetron components are respectively arranged in the first space and the second space.

[0011] The four groups of magnetic control components in the first space are evenly distributed, and the four groups of magnetic control components in the second space are evenly distributed.

[0012] The metal inner tube, the metal outer tube and the iron core are all made of soft magnetic materials.

[0013] The metal inner tube, the main rubber, and the metal outer tube are vulcanized and formed into one body.

[0014] Due to the application of the above technical solution, the utility model has the following advantages compared with the existing technology: the utility model has a better shock absorption effect and can significantly improve the controllability and comfort of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 It is a three-dimensional schematic diagram of the magnetic suspension bushing of the present invention.

[0016] Attachment Figure 2 It is a schematic cross-sectional view of the magnetic suspension bushing of the present invention.

[0017] Attachment Figure 3 It is a top view schematic diagram of the magnetic suspension bushing of the present invention.

[0018] In the above figures: 1. Metal inner tube; 2. Iron core; 3. First anti-collision rubber pad; 4. Powered coil; 5. Main rubber; 6. Second anti-collision rubber pad; 7. Permanent magnet; 8. Metal outer tube. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0020] Example 1: As shown in the attached Figure 1 To the attached Figure 3 As shown, a magnetic suspension bushing includes a metal inner tube 1, a main rubber 5, a metal outer tube 8 and multiple groups of magnetic control components.

[0021] The metal inner tube 1 is a circular tube. The main rubber 5 is an annular cylindrical shape, which is sleeved on the middle part of the outer circumference of the metal inner tube 1 and tightly connected to the metal inner tube 1. The metal outer tube 8 is set on the outer circumference of the main rubber 5 and tightly connected to the main rubber 5, and the two ends of the metal outer tube 8 axially protrude from the two end faces of the main rubber 5. The axial length of the metal outer tube 8 is slightly shorter than the axial length of the metal inner tube 1. The metal inner tube 1, the main rubber 5, and the metal outer tube 8 are coaxially arranged. The two ends of the metal inner tube 1 are respectively its first end and the second end, the two ends of the metal outer tube 8 are respectively its first end and the second end, and the end faces of the two ends of the main rubber 5 are respectively its first end face and the second end face. The first end of the metal inner tube 1, the first end face of the main rubber 5, and the first end of the metal outer tube 8 are located on the same side, and the second end of the metal inner tube 1, the second end face of the main rubber 5, and the second end of the metal outer tube 8 are located on the same side. Based on the aforementioned structure of the metal inner tube 1, the main rubber member 5, and the metal outer tube 8, a first open space is formed between the first end of the metal inner tube 1, the first end surface of the main rubber member 5, and the first end of the metal outer tube 8. A second open space is formed between the second end of the metal inner tube 1, the second end surface of the main rubber member 5, and the second end of the metal outer tube 8. The main rubber member 5 serves as a connector, connecting the metal inner tube 1 and the metal outer tube 8. It also prevents excessive axial displacement of the metal inner tube 1, which could cause it to separate from the metal outer tube 8, thereby providing an axial limit.

[0022] Multiple sets of magnetic control assemblies are respectively arranged in the first and second spaces, forming a symmetrical structure in the first and second spaces. In this embodiment, four sets of magnetic control assemblies are respectively arranged in the first and second spaces, for a total of eight sets of magnetic control assemblies. The four sets of magnetic control assemblies in the first space are evenly distributed around the metal inner tube 1 and are respectively located on two perpendicular diameters of the metal outer tube 8. The four sets of magnetic control assemblies in the second space are evenly distributed around the metal inner tube 1 and are respectively located on two perpendicular diameters of the metal outer tube 8.

[0023] Each magnetron assembly consists of at least an iron core 2, a current-carrying coil 4, and a permanent magnet 7. The iron core 2 is mounted on the outer circumference of the metal inner tube 1. It is roughly cylindrical and axially aligned with the radial direction of the metal outer tube 8, with one end connected to the outer circumference of the metal inner tube 1. The current-carrying coil 4 is wound around the iron core 2, so that its axial direction also aligns with the radial direction of the metal outer tube 8. The permanent magnet 7 is mounted on the inner side of the metal outer tube 8, coaxially aligned with the iron core 2. The permanent magnet 7 is roughly cylindrical and axially aligned with the radial direction of the metal outer tube 8, with one end connected to the inner surface of the metal outer tube 8. Each independently designed magnetron assembly allows for control of the magnetic poles of each iron core 2 by adjusting the current direction of each current-carrying coil 4. Adjusting the magnetic poles of the eight iron cores 2 allows for adjustment of the radial, axial, and yaw stiffness of the bushing. The iron core 2 made of soft magnetic material achieves a stronger magnetic field and lower coercive force. The eight permanent magnets 7, positioned corresponding to the eight cores 2, form magnetic poles that attract or repel each other, allowing the bushing's stiffness to be adjusted upward or downward. The energized coil 4 is made of copper, and the current flowing through it is direct current. Copper has low electrical resistance and heat generation, which prevents it from affecting the main rubber element 5 or surrounding components. Direct current also makes it easier to control the direction of the current, which can be used to change the magnetic poles.

[0024] In addition, the magnetron assembly also includes a first anti-collision rubber pad and a second anti-collision rubber pad 6. The first anti-collision rubber pad is arranged on the end of the iron core 2 close to the permanent magnet 7 and covers the side end surface, and the second anti-collision rubber pad 6 is arranged on the end of the permanent magnet 7 close to the iron core 2 and covers the side end surface. The first anti-collision rubber pad and the second anti-collision rubber pad 6 are both hemispherical. The first anti-collision rubber pad and the second anti-collision rubber pad 6 are both made of rubber material and will not shield the magnetic field; when the load is too large, the first anti-collision rubber pad and the second anti-collision rubber pad 6 are in contact, which plays a role of buffering and limiting, and can avoid direct collision between the iron core 2 and the permanent magnet 7; the hemispherical structure can ensure that the contact process is gradually established to avoid impact vibration caused by direct contact.

[0025] In the above scheme, the metal inner tube 1, the main rubber body 5, and the metal outer tube 8 are vulcanized into an integral unit. The metal inner tube 1, the metal outer tube 8, and the iron core 2 are all made of soft magnetic material. Soft magnetic material has low coercivity and high magnetic permeability. When the energized coil 4 is energized, the metal inner tube 1 generates a magnetic field that enhances the magnetic field of the energized coil 4. When the energized coil 4 is de-energized, the magnetic field of the metal inner tube 1 disappears, resulting in low remanence. The magnetized metal outer tube 8 also enhances the magnetic field strength of the permanent magnet 7.

[0026] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A magnetic suspension bushing, characterized in that: The magnetic levitation bushing includes a metal inner tube, a main rubber, and a metal outer tube. The main rubber is arranged in the middle of the outer circumference of the metal inner tube, and the metal outer tube is arranged on the outer circumference of the main rubber. A first space is formed between the first end of the metal inner tube, the first end surface of the main rubber, and the first end of the metal outer tube. A second space is formed between the second end of the metal inner tube, the second end surface of the main rubber, and the second end of the metal outer tube. The magnetic levitation bushing also includes multiple groups of magnetic control components arranged in the first space and the second space, and the magnetic control components include an iron core, an energized coil, and a permanent magnet. The iron core is arranged on the outer circumference of the metal inner tube, the energized coil is wound on the iron core, and the permanent magnet is arranged on the inner side surface of the metal outer tube and corresponds to the iron core.

2. The magnetic suspension bushing according to claim 1, characterized in that: The metal inner tube, the main rubber, and the metal outer tube are coaxially arranged.

3. The magnetic suspension bushing according to claim 2, characterized in that: The axial direction of the iron core, the axial direction of the energized coil, and the axial direction of the permanent magnet are all arranged along the radial direction of the metal outer tube.

4. The magnetic suspension bushing according to any one of claims 1 to 3, characterized in that: The magnetron assembly further includes a first anti-collision rubber pad arranged at the end of the iron core and a second anti-collision rubber pad arranged at the end of the permanent magnet.

5. The magnetic suspension bushing according to claim 4, characterized in that: The first anti-collision rubber pad and the second anti-collision rubber pad are both hemispherical.

6. The magnetic suspension bushing according to claim 4, characterized in that: Four groups of the magnetron components are respectively arranged in the first space and the second space.

7. The magnetic suspension bushing according to claim 6, characterized in that: The four groups of magnetic control components in the first space are evenly distributed, and the four groups of magnetic control components in the second space are evenly distributed.

8. The magnetic suspension bushing according to claim 1, characterized in that: The metal inner tube, the metal outer tube and the iron core are all made of soft magnetic materials.

9. The magnetic suspension bushing according to claim 1, characterized in that: The metal inner tube, the main rubber, and the metal outer tube are vulcanized and formed into one body.

Images