Electromagnetic damper and mounting structure and adjusting method thereof

Abstract

The invention discloses an electromagnetic damper and a mounting structure and an adjusting method thereof, and belongs to the technical field of damping shock absorption, the electromagnetic damper comprises a guide pipe, a coil and a guide rod, the first end of the guide pipe is used for being mounted on a first structure, a sliding space is formed in the guide pipe, and an opening communicated with the sliding space is formed in the second end of the guide pipe; the coil is spirally wound on the outer diameter side of the catheter; the first end of the guide rod is used for being inserted into the opening and sliding in the sliding space, the second end of the guide rod is used for being installed on a second structure, and the first end of the guide rod adopts a permanent magnet. The damping effect can be achieved through the interaction force of the coil and the guide rod, then the generation and control strategy of an electromagnetic field is optimized, instant and accurate adjustment of the strength of the damper is achieved, dependence on complex fluid medium changes is not needed, and therefore the stability and durability of a system are improved while the high response speed is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of damping and vibration reduction, and in particular to an electromagnetic damper and a mounting structure and an adjustment method thereof. Background Art

[0002] In modern vehicle engineering and dynamic control systems, the performance of the suspension system has a crucial impact on the vehicle's driving stability, comfort and handling. In order to optimize these performances, active damper technology has emerged, among which the most representative are CDC (Continuously Damped Control) suspension technology and MRC (Magnetorheological Control) suspension technology.

[0003] CDC suspension technology can effectively adjust the damping fluid channel by precisely controlling the opening of the solenoid valve, and then dynamically adjust the damping strength to adapt to different road conditions and driving requirements. However, although CDC technology can provide relatively stable damping control, its response time is relatively long, usually about 10 milliseconds, which may limit the ability to instantly adjust the vehicle's dynamic characteristics in a high-speed driving environment.

[0004] On the other hand, MRC suspension technology changes the viscosity of the fluid through the action of electromagnetic fields, achieving rapid adjustment of the damping force, and its response speed can reach 1 millisecond, which is significantly faster than CDC technology. This technology greatly improves the response speed and adjustment accuracy of the suspension system, but it also exposes some problems in practical applications. First, the structure of the MRC system is relatively complex, including high-precision electromagnetic devices and special fluid materials, which increases manufacturing costs and maintenance difficulties. Secondly, due to the high precision and complexity of the system, its failure rate is also relatively high. Once a failure occurs, it will directly affect the driving safety and comfort of the vehicle.

[0005] In view of the limitations of the above two mainstream active damper technologies, overcoming their shortcomings is a technical problem faced by this field. Summary of the invention

[0006] The purpose of the present invention is to provide an electromagnetic damper and its installation structure and adjustment method to solve the problems existing in the above-mentioned prior art. The damping effect can be achieved by utilizing the interaction force between the coil and the guide rod, thereby optimizing the generation and control strategy of the electromagnetic field, and realizing instant and precise adjustment of the damper strength without relying on complex changes in the fluid medium, thereby improving the stability and durability of the system while ensuring a high response speed.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides an electromagnetic damper, comprising a conduit, a coil and a guide rod, wherein the first end of the conduit is used to be installed on a first structure, a sliding space is provided inside the conduit, and an opening connected to the sliding space is provided at the second end of the conduit; the coil is spirally wound on the outer diameter side of the conduit; the first end of the guide rod is used to be inserted into the opening and slide in the sliding space, the second end of the guide rod is used to be installed on a second structure, and the first end of the guide rod adopts a permanent magnet.

[0009] In one embodiment, the coil includes two or more spiral structures, and each of the spiral structures is connected to a regulating power supply.

[0010] In one embodiment, the helical structure is distributed in sections in the axial direction.

[0011] In one embodiment, the spiral structures are wound side by side in the axial direction.

[0012] In one embodiment, the first end of the guide rod is telescopically connected to the second end of the guide rod.

[0013] The present invention provides a mounting structure, comprising a first structure, a second structure and the electromagnetic damper as described above, wherein the first end of the conduit is mounted on the first structure, and the second end of the guide rod is mounted on the second structure.

[0014] In one embodiment, the electromagnetic dampers are distributed between the first structure and the second structure, the first structure is parallel to the second structure, the electromagnetic dampers in the middle are arranged vertically, and the electromagnetic dampers on the outside are arranged tilted toward the inside.

[0015] The present invention provides an adjustment method, which uses the electromagnetic damper as described above, wherein the coil includes two or more spiral structures, each of which is connected to an adjustment power supply; the spiral structures are distributed in sections or wound in parallel in the axial direction, and include the following contents: as the depth of the guide rod inserted into the catheter increases, the spiral structures are powered in sequence, the number of power supply turns of the coil is increased, the resistance of the guide rod to continue to be inserted into the catheter is increased, and the insertion depth of the guide rod into the catheter is reduced.

[0016] In one embodiment, after the guide rod is inserted into the catheter to a first set depth, the current of the spiral structure is increased to keep the first set depth unchanged until the guide rod has no tendency to continue to be inserted, and finally the first set depth is maintained. The first set depth is used to keep the stroke of the guide rod and the catheter within a set range.

[0017] In one embodiment, the first end of the guide rod is telescopically connected to the second end of the guide rod. After the first end of the guide rod is inserted into the catheter to a second set depth, the first end of the guide rod retracts toward the second end of the guide rod. During the retraction process, the current of the spiral structure is synchronously increased to keep the spacing between the first structure and the second structure unchanged until the first end of the guide rod retracts to a first set depth and finally maintains the first set depth. The first set depth is used to keep the stroke of the guide rod and the catheter within a set range.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The guide rod of the present invention is inserted into a catheter wound with a coil. When the guide rod is moved, the coil will generate a force that hinders the movement of the guide rod. The damping strength can be adjusted by adjusting the current of the coil, so that the damping effect can be achieved by utilizing the interaction force between the coil and the guide rod, thereby optimizing the generation and control strategy of the electromagnetic field, and realizing instant and precise adjustment of the damper strength without relying on complex changes in the fluid medium, thereby ensuring a high response speed while improving the stability and durability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a schematic diagram of an electromagnetic damper according to a first embodiment;

[0022] Figure 2 is a schematic diagram of an electromagnetic damper according to a second embodiment;

[0023] Figure 3 is a schematic diagram of an electromagnetic damper according to a third embodiment;

[0024] Figure 4 for Figure 2 Schematic diagram of the guide rod in the retracted state;

[0025] Figure 5 for Figure 3 Schematic diagram of the guide rod in the retracted state;

[0026] Figure 6 is a front view of a mounting structure according to one or more embodiments;

[0027] Figure 7 for Figure 6 A side view of the mounting structure;

[0028] Figure 8 for Figure 6 A top view of the mounting structure without the first structure;

[0029] Among them, 1, the first structure; 2, the second structure; 3, the electromagnetic damper; 31, the catheter; 32, the guide rod; 33, the coil; 331, the first spiral segment; 332, the second spiral segment; 333, the third spiral segment; 334, the fourth spiral segment. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide an electromagnetic damper and its installation structure and adjustment method to solve the problems existing in the prior art. The damping effect can be achieved by utilizing the interaction force between the coil and the guide rod, thereby optimizing the generation and control strategy of the electromagnetic field, and realizing instant and precise adjustment of the damper strength without relying on complex changes in the fluid medium, thereby improving the stability and durability of the system while ensuring a high response speed.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 8As shown, the present invention provides an electromagnetic damper, including a conduit 31, a coil 33 and a guide rod 32. The conduit 31 includes a tubular body, and the two ends of the tubular body are respectively the first end of the conduit 31 and the second end of the conduit 31. The first end of the conduit 31 is used to be installed on a first structure 1, and the first structure 1 can be a vehicle frame, chassis and other structures. The conduit 31 is provided with a sliding space inside, and the sliding space matches the guide rod 32, so that the guide rod 32 can slide in the sliding space, which has a guiding effect on the guide rod 32. The second end of the conduit 31 is provided with an opening connected to the sliding space, and the opening is for the convenience of the guide rod 32 to enter and slide. The coil 33 is spirally wound on the outer diameter side of the conduit 31, and the number of turns of the coil 33 is set according to the actual damping requirements. The guide rod 32 includes a rod-shaped body, and the two ends of the rod-shaped body are respectively the first end of the guide rod 32 and the second end of the guide rod 32. The first end of the guide rod 32 is used to be inserted into the opening of the conduit 31 and slide in the sliding space. The second end of the guide rod 32 is used to be installed on a second structure 2, and the second structure 2 can be a vehicle wheel or suspension and other structures. The first end of the guide rod 32 adopts a permanent magnet. When the insertion depth of the guide rod 32 in the catheter 31 changes, the magnitude of the interaction force between the guide rod 32 and the coil 33 changes accordingly. The coil 33 can be a closed coil 33 or a powered coil 33. When a closed coil 33 is adopted, according to Lenz's law, when the guide rod 32 is inserted into the closed coil 33, the magnetic flux in the coil 33 increases, and the direction of the magnetic field generated by the induced current is opposite to the direction of the original magnetic field, thereby hindering the increase of the magnetic flux and achieving a damping effect; when the guide rod 32 is pulled out of the closed coil 33, the magnetic flux of the coil 33 decreases, and the direction of the magnetic field generated by the induced current is the same as the direction of the original magnetic field, thereby hindering the reduction of the magnetic flux and achieving a damping effect. When a powered coil 33 is adopted, according to the principle of the magnetic effect of the current, when the coil 33 is powered, a magnetic field is generated, which generates an attractive force or a repulsive force on the guide rod 32. Changing the current size can provide damping of different intensities, thereby achieving a variable damping effect.

[0034] The guide rod 32 of the present invention is inserted into the inside of the catheter 31 wound with the coil 33. When the guide rod 32 is moved, the coil 33 will generate a force that hinders 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, thereby optimizing the generation and control strategy of the electromagnetic field, and realizing instant and precise adjustment of the damper strength without relying on complex changes in the fluid medium, thereby ensuring a high response speed while improving the stability and durability of the system.

[0035] In one embodiment, the coil 33 includes two or more spiral structures, each spiral structure has at least one turn, and each spiral structure is connected to an adjustable power supply. By controlling the adjustable power supply, whether each spiral structure is energized and the magnitude of the current flowing through each spiral structure can be individually controlled.

[0036] In one embodiment, if Figure 3 and Figure 5 As shown, the spiral structure is distributed in sections in the axial direction, including a third spiral section 333 and a fourth spiral section 334, and the third spiral section 333 and the fourth spiral section 334 are not connected. According to the depth of the guide rod 32 inserted into the catheter 31, the power supply of the third spiral section 333 and the fourth spiral section 334 can be turned on successively to provide the coil 33 with sufficient damping on the guide rod 32.

[0037] In one embodiment, if Figure 2 and Figure 4 As shown, the spiral structure is wound in parallel in the axial direction, including a first spiral segment 331 and a second spiral segment 332. The first spiral segment 331 and the second spiral segment 332 are not connected, but the first spiral segment 331 and the second spiral segment 332 are respectively embedded in the gap between the turns of each other. According to the depth of the guide rod 32 inserted into the catheter 31, the first spiral segment 331 and the second spiral segment 332 can be connected in sequence to provide the coil 33 with sufficient damping on the guide rod 32.

[0038] 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 specifically restricted. For example, a hydraulic rod, a pneumatic rod or an air spring can be used. According to needs, the distance between the first end and the second end of the guide rod 32 can be adjusted, thereby adjusting the depth of the first end of the guide rod 32 inserted into the catheter 31.

[0039] Combination Figures 1 to 8 As shown, the present invention provides a mounting structure, including a first structure 1, a second structure 2, and an electromagnetic damper 3 as described above, the first structure 1 and the second structure 2 can be used as a chassis and a suspension of a vehicle, or as a seat and a base in a vehicle, respectively. The first end of the guide tube 31 is mounted on the first structure 1, the second end of the guide rod 32 is mounted on the second structure 2, at least one electromagnetic damper 3 is provided, and the first structure 1 and the second structure 2 are supported by the electromagnetic damper 3, which has the functions of buffering and shock absorption.

[0040] In one embodiment, the electromagnetic damper 3 is distributed between the first structure 1 and the second structure 2, that is, there are more than one electromagnetic damper 3 between the first structure 1 and the second structure 2 to achieve stable support for the first structure 1 and the second structure 2. In a normal state, the first structure 1 is parallel to the second structure 2, the electromagnetic damper 3 in the middle is vertically arranged between the first structure 1 and the second structure 2, and the electromagnetic damper 3 on the outside is arranged between the first structure 1 and the second structure 2 with an inward tilt.

[0041] In one embodiment, when the vehicle is starting quickly or braking suddenly, the driver and passengers may feel a sense of frustration due to inertia, which brings a bad driving experience. The above discomfort can be alleviated or eliminated by using the electromagnetic damper 3. When the brake pedal is pressed, the vehicle brakes, the cabin / seat has a forward inertia, and the two electromagnetic dampers 3 in the front can provide a backward support force, so that the cabin / seat is less forward and the inertia effect is reduced; when the accelerator pedal is pressed, the vehicle accelerates, the cabin / seat has a backward inertia, and the two electromagnetic dampers 3 in the rear can provide a forward support force to reduce the inertia effect.

[0042] Recombination Figures 1 to 8 As shown, the present invention provides an adjustment method, using the electromagnetic damper 3 as described above, the coil 33 includes two or more spiral structures, each spiral structure is connected to an adjustment power supply, and the adjustment power supply can be used to power the spiral structure or adjust the current. The spiral structure is distributed in sections or wound in parallel in the axial direction. The adjustment method includes the following contents: as the depth of the guide rod 32 inserted into the catheter 31 increases, the spiral structure is powered in sequence, thereby increasing the number of power supply turns of the coil 33, increasing the resistance of the guide rod 32 to continue to insert into the catheter 31, and finally reducing the insertion depth of the guide rod 32 into the catheter 31, so that the depth of the guide rod 32 in the catheter 31 is maintained within a certain range, thereby allowing the guide rod 32 to have sufficient moving space, especially providing good damping support when the vehicle is overloaded, and also avoiding the situation where the guide rod 32 collides and damages the electromagnetic damper 3 during bumps.

[0043] In one embodiment, after the guide rod 32 is inserted into the catheter 31 to a first set depth, as the load increases, the guide rod 32 has a tendency to be inserted deeper. At this time, the current of the spiral structure is increased to keep the first set depth unchanged until the guide rod 32 has no tendency to continue to be inserted, and finally maintains the first set depth. The first set depth is set according to the movable space range of the guide rod 32, that is, after being inserted into the first set depth, the guide rod 32 has enough space to move, and the first set depth is used to keep the travel of the guide rod 32 and the catheter 31 within the set range. Therefore, by controlling the current size, good damping support can be provided under the condition of increased load, and at the same time, the situation that the guide rod 32 collides and damages the electromagnetic damper 3 during bumps is avoided.

[0044] In one embodiment, the first end of the guide rod 32 is telescopically connected to the second end of the guide rod 32. After the first end of the guide rod 32 is inserted into the catheter 31 to a second set depth, the second set depth serves as the limit depth of insertion of the guide rod 32. At the second set depth, the moving space of the guide rod 32 is reduced and a collision may occur. At this time, the first end of the guide rod 32 retracts toward the second end of the guide rod 32. During the retraction process, the current of the spiral structure is synchronously increased to keep the spacing between the first structure 1 and the second structure 2 unchanged, thereby reducing the discomfort of the passengers, until the first end of the guide rod 32 retracts to the first set depth and finally maintains the first set depth. The first set depth is used to keep the stroke of the guide rod 32 and the catheter 31 within a set range.

[0045] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electromagnetic damper, characterized in that: include: A conduit, wherein a first end of the conduit is used to be installed on the first structure, a sliding space is provided inside the conduit, and an opening communicating with the sliding space is provided at a second end of the conduit; a coil, the coil being spirally wound around the outer diameter side of the catheter; And a guide rod, the first end of which is used to be inserted into the opening and slide in the sliding space, the second end of which is used to be installed on the second structure, and the first end of which adopts a permanent magnet.

2. The electromagnetic damper according to claim 1, characterized in that: The coil includes two or more spiral structures, and each of the spiral structures is connected to a regulating power supply.

3. The electromagnetic damper according to claim 2, characterized in that: The spiral structure is distributed in sections in the axial direction.

4. The electromagnetic damper according to claim 2, characterized in that: The spiral structures are wound in parallel in the axial direction.

5. The electromagnetic damper according to claim 1, characterized in that: The first end of the guide rod is telescopically connected to the second end of the guide rod.

6. A mounting structure, characterized in that: It comprises a first structure, a second structure and the electromagnetic damper according to any one of claims 1 to 5, wherein the first end of the conduit is mounted on the first structure, and the second end of the guide rod is mounted on the second structure.

7. The mounting structure according to claim 6, characterized in that: The electromagnetic dampers are distributed between the first structure and the second structure. The first structure is parallel to the second structure. The electromagnetic dampers in the middle are arranged vertically, and the electromagnetic dampers on the outside are arranged tilted toward the inside.

8. A method of regulation, characterized in that: The electromagnetic damper according to any one of claims 1 to 5 is applied, wherein the coil comprises two or more spiral structures, each of which is connected to a regulating power supply; the spiral structures are distributed in sections or wound in parallel in the axial direction, and include the following contents: As the depth of the guide rod inserted into the catheter increases, the spiral structure is powered sequentially, increasing the number of power supply turns of the coil, increasing the resistance of the guide rod to continue inserting into the catheter, and reducing the insertion depth of the guide rod into the catheter.

9. The adjustment method according to claim 8, characterized in that: After the guide rod is inserted into the catheter to a first set depth, the current of the spiral structure is increased to keep the first set depth unchanged until the guide rod has no tendency to continue to be inserted, and finally the first set depth is maintained. The first set depth is used to keep the travel of the guide rod and the catheter within a set range.

10. The adjustment method according to claim 8, characterized in that: The first end of the guide rod is telescopically connected to the second end of the guide rod. After the first end of the guide rod is inserted into the second set depth of the catheter, the first end of the guide rod retracts toward the second end of the guide rod. During the retraction process, the current of the spiral structure is synchronously increased to keep the spacing between the first structure and the second structure unchanged until the first end of the guide rod retracts to the first set depth and finally maintains the first set depth. The first set depth is used to keep the stroke of the guide rod and the catheter within a set range.

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