Electromagnetic damper, mounting structure and regulation method
The electromagnetic damper with coil and guide rod interaction addresses the complexity and cost issues of existing systems, ensuring rapid and precise damping regulation for enhanced vehicle stability and durability.
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2026-04-02
AI Technical Summary
Existing actively adjustable dampers in vehicle suspension systems face challenges such as high manufacturing costs, complexity, and high failure rates due to complex electromagnetic devices and specialized fluid materials, limiting their ability to adapt quickly to dynamic driving conditions.
An electromagnetic damper utilizing the interaction force between a coil and a guide rod, with adjustable current control, achieves immediate and precise damping regulation without relying on liquid medium changes, enhancing system stability and durability.
The solution provides stable and durable damping with high response speed, improving vehicle stability and comfort by optimizing electromagnetic field generation and control.
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Abstract
Description
TECHNICAL AREA
[0001] The present invention relates to the technical field of damping and shock absorption, in particular an electromagnetic damper and a mounting structure and a method for regulation. STATE OF THE ART
[0002] In modern vehicle engineering and dynamic control systems, the performance of the suspension system has a decisive influence on the vehicle's stability, comfort, and handling. To optimize these characteristics, technologies with actively adjustable dampers have been developed. The most representative of these are CDC (Continuously Damped Control) and MRC (Magnetorheological Control) suspension technologies.
[0003] CDC suspension technology enables effective regulation of the damping fluid channel through precise control of the solenoid valve's opening degree, thus dynamically adjusting the damping strength to adapt to varying road conditions and driving requirements. While CDC technology can offer more stable damping control, it has a longer response time, typically around 10 ms, which can limit the ability to instantly adapt to the vehicle's dynamic characteristics under rapidly changing driving conditions.
[0004] In contrast, MRC suspension technology uses an electromagnetic field to alter the viscosity of the fluid, enabling rapid adjustment of the damping force with a response time of up to 1 ms, which is significantly faster than CDC technology. While this technology considerably improves the response speed and adjustment accuracy of the suspension system, it also presents some challenges in practical application. First, the MRC system's structure is relatively complex, incorporating high-precision electromagnetic devices and specialized fluid materials, which increases manufacturing costs and maintenance. Second, due to the system's high precision and complexity, the failure rate is also relatively high, and any failure directly impacts the vehicle's driving safety and comfort.
[0005] Given the limitations of the two above technologies with actively adjustable dampers, overcoming their weaknesses is a technical problem in this field. CONTENTS OF THE PRESENT USE SAMPLE
[0006] The purpose of the present invention is to provide an electromagnetic damper, a mounting structure, and a method for regulation to solve the aforementioned prior art problems. The present invention utilizes the interaction force between the coil and the guide rod, which can achieve the damping effect, and then optimizes the generation and control strategy of the electromagnetic field to achieve immediate and precise regulation of the damper strength without relying on the complex changes in the liquid medium, thereby improving the stability and durability of the system while ensuring a high response speed.
[0007] To achieve the above purpose, the present invention provides the following solution: The present invention provides an electromagnetic damper comprising a conduit, a coil, and a guide rod, wherein a first end of the conduit is for attachment to a first structure, wherein a sliding chamber is provided inside the conduit, wherein a second end of the conduit is provided with an opening connecting the sliding chamber, wherein the coil is wound spirally on the side of the outer diameter of the conduit, and wherein the first end of the guide rod is provided for insertion into the opening and for sliding in the sliding chamber, wherein the second end of the guide rod is provided for mounting in a second structure, and wherein the first end of the guide rod uses a permanent magnet.
[0008] In one embodiment of the present invention, the coil comprises two or more spiral structures, each of which is connected to an adjustable power supply.
[0009] In one embodiment of the present invention, the spiral structures are distributed in sections in the axial direction.
[0010] In one embodiment of the present invention, the spiral structures are wound in the axial direction.
[0011] In one embodiment of the present invention, the first end of the guide rod is telescopically connected to the second end of the guide rod.
[0012] The present invention provides an assembly structure comprising a first structure, a second structure and an electromagnetic damper, wherein the first end of the guide tube is mounted in the first structure and the second end of the guide rod is mounted in the second structure.
[0013] In one embodiment of the present invention, the electromagnetic dampers are distributed between the first structure and the second structure, wherein the first structure runs parallel to the second structure, wherein the electromagnetic dampers are arranged vertically in the middle and the electromagnetic dampers on the outside are arranged inclined towards the inside.
[0014] The present invention provides a method for regulation, the method is applied to an electromagnetic damper described above, the coil comprises two or more spiral structures, each of the spiral structures is connected to an adjustable power supply, the spiral structures are distributed in sections or are wound side by side in the axial direction, and the method includes the following: as the insertion depth of the guide rod into the guide tube increases, the spiral structures are successively energized, thereby increasing the number of windings of the coil energized, increasing the resistance to further insertion of the guide rod into the guide tube, and decreasing the insertion depth of the guide rod into the guide tube.
[0015] In one embodiment of the present invention, after the guide rod is inserted into the conduit at a first set depth, the current of the spiral structure is increased, the first set depth being held unchanged until there is no tendency for the guide rod to be inserted further, and finally the first set depth is maintained, the first set depth being used to keep the path of the guide rod with the conduit within a certain range.
[0016] In one embodiment of the present invention, the first end of the guide rod is telescopically connected to the second end of the guide rod, and the first end of the guide rod is retracted towards the second end of the guide rod after the first end of the guide rod has been inserted into the conduit to a second set depth, and the current of the spiral structure increases synchronously during retraction, and the distance between the first structure and the second structure remains unchanged until the first end of the guide rod is retracted to a first set depth, and the first set depth is finally maintained, and the first set depth is used to keep the path of the guide rod and the conduit within a set range.
[0017] Compared to the prior art, the present invention has the following technical implications: The guide rod of the present invention is inserted into the guide tube, which is wrapped with coils. When the guide rod is moved, the coils generate a force that impedes its movement, and the damping strength can be adjusted by changing the current in the coils. The present invention utilizes the interaction force between the coil and the guide rod, which achieves the damping effect, and then optimizes the generation and control strategy of the electromagnetic field to achieve immediate and precise regulation of the damping strength without relying on the complex changes in the liquid medium. This improves the stability and durability of the system while ensuring a high response speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] To more clearly illustrate the technical solutions in the embodiments or in the prior art of the present invention, the following description briefly refers to the attached drawings, which are to be used in the embodiments. Naturally, the drawings in the following description represent only some embodiments of the present invention. A person skilled in the art can create other drawings based on these without any creative effort. Fig. Figure 1 shows a schematic representation of an electromagnetic damper according to a first embodiment; Fig. Figure 2 shows a schematic representation of an electromagnetic damper according to a second embodiment; Fig. Figure 3 shows a schematic representation of an electromagnetic damper according to a third embodiment; Fig. Figure 4 shows a schematic representation of the guide rod in a retracted state. Fig. 2; Fig. Figure 5 shows a schematic representation of the guide rod in a retracted state. Fig. 3; Fig. Figure 6 shows a main view of an assembly structure according to one or more embodiments; Fig. Figure 7 shows a side view of the assembly structure of Fig. 6; Fig. Figure 8 shows a top view of the assembly structure of Fig. 6, where the first structure is removed;
[0019] Reference list: 1. first structure; 2. second structure; 3. electromagnetic damper; 31. guide tube; 32. guide rod; 33. coil; 331. first spiral section; 332. second spiral section; 333. third spiral section; 334. fourth spiral section. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Naturally, the described embodiments represent only a subset of the embodiments of the present invention, and not all of them. Starting from the embodiments of the present invention, all other embodiments that a person skilled in the art can achieve without creative effort also fall within the scope of protection of the present invention.
[0021] The purpose of the present invention is to provide an electromagnetic damper, a mounting structure, and a regulation method to solve problems existing in the prior art. The present invention utilizes the interaction force between the coil and the guide rod, which can achieve the damping effect, and then optimizes the generation and control strategy of the electromagnetic field to achieve immediate and precise regulation of the damper strength without relying on the complex changes in the liquid medium, thereby improving the stability and durability of the system while ensuring a high response speed.
[0022] In order to make the above purpose, features and advantages of the present invention clearer and more understandable, the present invention will be described in more detail below in conjunction with the attached drawings and specific embodiments.
[0023] As in the Fig. As shown in Figures 1 to 8, the present invention provides an electromagnetic damper comprising a guide tube 31, a coil 33, and a guide rod 32. The guide tube 31 comprises a tubular body, with the two ends of the tubular body being a first end of the guide tube 31 and a second end of the guide tube 31. The first end of the guide tube 31 is used for mounting on a first structure 1. The first structure 1 can be a structure such as a frame, chassis, etc., of a vehicle. Inside the guide tube 31, a sliding chamber is provided that is adapted to the guide rod 32, allowing the guide rod 32 to slide in the sliding chamber and providing guidance. The second end of the guide tube 31 is provided with an opening that is connected to the sliding chamber and is intended to facilitate the insertion and sliding of the guide rod 32.The coil 33 is wound spirally on the side of the outer diameter of the guide tube 31, and the number of windings of the coil 33 is adjusted according to the actual damping requirement. The guide rod 32 comprises a rod-shaped body, and the two ends of the rod-shaped body are a first end of the guide rod 32 and a second end of the guide rod 32. The first end of the guide rod 32 is used for insertion into the opening of the guide tube 31 and for sliding within the sliding space. The second end of the guide rod 32 is used for attachment to a second structure 2, which may be a structure such as a wheel or the suspension of a vehicle. The first end of the guide rod 32 consists of a permanent magnet, and the magnitude of the interaction force between the guide rod 32 and the coil 33 changes depending on how deeply the guide rod 32 is inserted into the guide tube 31.The coil 33 can be either a closed coil 33 or a current-carrying coil 33. When the closed coil 33 is used, according to wave law, the magnetic flux in the coil 33 increases when the guide rod 32 is inserted into the closed coil 33, and the induced current generates a magnetic field in a direction opposite to the direction of the original magnetic field, thus preventing the increase in magnetic flux and producing a damping effect. When the guide rod 32 is withdrawn from the closed coil 33, the magnetic flux in the coil 33 decreases, and the direction of the magnetic field generated by the induced electric current is the same as the direction of the original magnetic field, thus preventing the decrease in magnetic flux and producing a damping effect.When using the current-carrying coil 33, a magnetic field is generated according to the principle of the magnetic effect of the electric current when the coil 33 is excited, which exerts an attractive or repulsive force on the guide rod 32, and by varying the magnitude of the electric current a different strength of damping can be achieved, so that a variable damping effect is obtained.
[0024] The guide rod 32 of the present invention is inserted into the conduit 31 wrapped with the coil 33, and when the guide rod 32 is moved, the coil 33 generates a force that impedes the movement of the guide rod 32. By adjusting the current of the coil 33, the damping strength can be adjusted so that the damping effect can be achieved by utilizing the interaction force between the coil 33 and the guide rod 32. In this way, the generation and control strategy of the electromagnetic field is optimized to achieve immediate and precise regulation of the damping strength without relying on the complex changes in the liquid medium, thereby improving the stability and durability of the system while ensuring a high response speed.
[0025] In one embodiment, the coil 33 comprises two or more spiral structures, each spiral structure having a winding number of at least one winding, each spiral structure being connected to an adjustable power supply, and it being possible to individually control whether each spiral structure is excited or not, as well as to individually control the magnitude of the current flowing through each spiral structure by controlling the adjustable power supply.
[0026] In one embodiment as described in the Fig. 3 and Fig. As shown in Figure 5, the spiral structure is divided in an axial direction into sections comprising a third spiral section 333 and a fourth spiral section 334, with no connection between the third spiral section 333 and the fourth spiral section 334. Depending on the insertion depth of the guide rod 32 into the line 31, the third spiral section 333 and the fourth spiral section 334 can be engaged sequentially to ensure sufficient damping of the guide rod 32 by the coil 33.
[0027] In one embodiment as described in the Fig. 2 and Fig. As shown in Figure 4, the spiral structure is wound side by side in the axial direction and comprises a first spiral section 331 and a second spiral section 332, wherein the first spiral section 331 and the second spiral section 332 are not connected to each other, but rather each is embedded in the winding spaces of the other. Depending on the depth to which the guide rod 32 is inserted into the guide tube 31, the first spiral section 331 and the second spiral section 332 can be switched on sequentially to achieve a sufficiently large damping of the guide rod 32 by the coil 33.
[0028] In one embodiment, the first end of the guide rod 32 is telescopically connected to the second end of the guide rod 32, and the specific telescopic adjustment structure is not defined; it can, for example, be in the form of a hydraulic rod, a pneumatic rod, or an air spring. Depending on requirements, the distance between the first and second ends of the guide rod 32 can be adjusted, thereby adapting the depth to which the first end of the guide rod 32 is inserted into the conduit 31.
[0029] In connection with the Fig. Figures 1 to 8 of the present invention provide an assembly structure comprising a first structure 1, a second structure 2, and an electromagnetic damper 3, as previously described, wherein the first structure 1 and the second structure 2 can be used as a chassis or suspension of a vehicle, or as a seat or base in a vehicle. A first end of the guide tube 31 is attached to the first structure 1, a second end of the guide rod 32 is attached to the second structure 2, and the electromagnetic damper 3 is present at least once, and the first structure 1 is supported between the first structure 1 and the second structure 2 by the electromagnetic damper 3, which has the function of damping and shock absorption.
[0030] In one embodiment, the electromagnetic damper 3 is distributed and provided between the first structure 1 and the second structure 2; that is, there is more than one electromagnetic damper 3 between the first structure 1 and the second structure 2, thereby achieving stable support between the first structure 1 and the second structure 2. In the normal state, the first structure 1 is parallel to the second structure 2, the electromagnetic damper 3 in the middle is arranged vertically between the first structure 1 and the second structure 2, and the electromagnetic damper 3 on the outside is arranged inclined inwards between the first structure 1 and the second structure 2.
[0031] In one embodiment, the driver and passenger experience a stuttering sensation during rapid acceleration or sharp braking of the vehicle due to inertia, resulting in a poor driving experience. This discomfort can be slowed or eliminated by the use of the electromagnetic damper 3. When the brake pedal is applied, the vehicle decelerates and the cockpit / seat has forward inertia. The two electromagnetic dampers 3 at the front can provide rearward support to reduce the forward movement of the cockpit / seat and thus lessen the effect of inertia. When the accelerator pedal is applied, the vehicle accelerates, the cockpit / seat has rearward inertia, and the two electromagnetic dampers 3 at the rear can provide forward support, thereby reducing the influence of inertia.
[0032] Again in connection with the Fig.Figures 1 to 8 of the present invention provide a regulation method applied to the above-mentioned electromagnetic damper. A coil 33 comprises two or more helical structures, each helical structure being connected to an adjustable power supply with which the helical structures can be energized or the current intensity adjusted. The helical structures are distributed in sections or wound side by side in the axial direction. The regulation method involves energizing the helical structures sequentially as the insertion depth of the guide rod 32 into the guide tube 31 increases. This increases the number of windings of the coil 33 energized, increases the resistance to further insertion of the guide rod 32 into the guide tube 31, and decreases the insertion depth of the guide rod 32 into the guide tube 31.This allows the guide rod 32 to be provided with sufficient freedom of movement, in particular to ensure good damping support under heavy vehicle loads and also to avoid the occurrence of dents if the guide rod 32 collides and damages the electromagnetic damper 3.
[0033] In one embodiment, after being inserted into the guide tube 31 at the first set depth, the guide rod 32 tends to be inserted deeper as the load increases. At this point, the current of the spiral structure is increased to maintain the first set depth unchanged until the guide rod 32 no longer tends to be inserted further, and the first set depth is finally maintained. The first set depth is adjusted according to the spatial range in which the guide rod 32 can move; that is, after insertion at the first set depth, the guide rod 32 has sufficient space to move, and the first set depth is used to keep the movement of the guide rod 32 within the guide tube 31 within the set range.This ensures good damping support when the load increases by controlling the current strength, while at the same time preventing damage to the electromagnetic damper 3 from collisions of the guide rod 32 during impacts.
[0034] In one embodiment, the first end of the guide rod 32 is telescopically connected to the second end of the guide rod 32, and after the first end of the guide rod 32 has been inserted into the conduit 31 at a second set depth, the second set depth serves as a limit depth for the insertion of the guide rod 32, and at the second set depth the space for the movement of the guide rod 32 is reduced, and a collision may occur.At this point, the first end of the guide rod 32 is retracted towards the second end of the guide rod 32, and during the retraction, the flow of the spiral structure is synchronously increased to maintain the distance between the first structure 1 and the second structure 2 unchanged and to reduce passenger inconvenience; until the first end of the guide rod 32 is retracted to a first set depth, the first set depth is finally maintained, the first set depth being used to keep the movement of the guide rod 32 and the conduit 31 within a certain range.
[0035] In the present invention, specific examples are used to illustrate the principles and implementation of the present invention, and the above illustrations of the examples serve only to help understand the method of the present invention and its core ideas; at the same time, for the general person skilled in the field, there will be changes in the specific implementation and scope of application based on the idea of the present invention.
[0036] In summary, the content of this specification should not be understood as a limitation of the present invention.
Claims
[1] Electromagnetic damper, characterized by that it includes the following: a conduit, wherein a first end of the conduit serves for attachment to a first structure, wherein a sliding space is provided inside the conduit, and wherein a second end of the conduit is provided with an opening that connects the sliding space; a coil, wherein the coil is wound spirally on the side of the outer diameter of the conduit; and a guide rod, wherein the first end of the guide rod is provided for insertion into the opening and for sliding in the sliding space, wherein the second end of the guide rod is provided for mounting in a second structure, wherein the first end of the guide rod uses a permanent magnet. [2] Electromagnetic damper according to claim 1, characterized bythat the coil comprises two or more spiral structures, each of which is connected to an adjustable power supply. [3] Electromagnetic damper according to claim 2, characterized by that the spiral structures are distributed in sections in the axial direction. [4] Electromagnetic damper according to claim 2, characterized by that the spiral structures are wound in an axial direction. [5] Electromagnetic damper according to claim 1, characterized by that the first end of the guide rod is telescopically connected to the second end of the guide rod. [6] Assembly structure, characterized by , that it comprises a first structure, a second structure and an electromagnetic damper according to one of claims 1-5, wherein the first end of the guide tube is mounted in the first structure and the second end of the guide rod is mounted in the second structure. [7] Assembly structure according to claim 6, characterized by that the electromagnetic dampers are distributed between the first structure and the second structure, wherein the first structure runs parallel to the second structure, the electromagnetic dampers are arranged vertically in the middle, and the electromagnetic dampers on the outside are arranged inclined towards the inside. [8] Procedures for regulation, characterized by that the method is applied to an electromagnetic damper according to any one of claims 1 to 5, wherein the coil comprises two or more spiral structures, each of the spiral structures being connected to an adjustable power supply; wherein the spiral structures are distributed in sections or wound side by side in the axial direction, and that the method comprises the following: that as the insertion depth of the guide rod into the conduit increases, the spiral structures are successively supplied with energy, thereby increasing the number of windings supplied with current to the coil, increasing the resistance to further insertion of the guide rod into the conduit, and decreasing the insertion depth of the guide rod into the conduit. [9] Method for regulation according to claim 8, characterized by , that after the guide rod is inserted into the conduit at a first set depth, the current of the spiral structure is increased, the first set depth being kept unchanged until there is no tendency for the guide rod to be inserted further, and finally the first set depth is maintained, the first set depth being used to keep the path of the guide rod with the conduit within a certain range. [10] Method for regulation according to claim 8, characterized by , that the first end of the guide rod is telescopically connected to the second end of the guide rod and that the first end of the guide rod is retracted towards the second end of the guide rod after the first end of the guide rod has been inserted into the conduit to a second set depth, and that the current of the spiral structure increases synchronously during retraction and the distance between the first structure and the second structure remains unchanged until the first end of the guide rod is retracted to a first set depth and the first set depth is finally maintained, and that the first set depth is used to keep the path of the guide rod and the conduit within a set range.
Citation Information
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