A linear double-spring electromagnetic shock absorber for a vehicle and a vehicle

Abstract

The application relates to the technical field of vehicle suspension, and relates to a linear double-spring electromagnetic shock absorber for vehicles, which comprises an end cover, a damping rod, an upper shock absorber assembly and a linear electromagnetic actuator. The linear electromagnetic actuator comprises a shell, permanent magnet rings, a coil framework and a soft iron ring. The shell is a hollow tubular structure, and the inside of the shell is provided with a plurality of permanent magnet rings arranged in an axial direction. The permanent magnet rings are annular sheet structures. The adjacent two permanent magnet rings are separated by the soft iron ring, and the adjacent two permanent magnet rings are arranged in a same-pole opposite arrangement mode. The damping rod is connected to the top of the end cover. The upper shock absorber assembly is installed between the end cover and the linear electromagnetic actuator. The damping rod penetrates through the linear electromagnetic actuator along the shaft center of the shell. The coil framework is installed on the section of the damping rod located in the inside of the shell. The coil framework is wound with a coil. The electromagnetic shock absorber has wide adaptability, low cost, fast response speed, improved service life of the shock absorber, and further improved smoothness and stability of vehicle driving.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle suspension technology, in particular to a linear double-spring electromagnetic shock absorber for vehicles and a vehicle. BACKGROUND

[0002] Suspension is one of the important components of the automobile chassis system, which can buffer and absorb the vibration and impact of the road to the vehicle body during normal operation. Therefore, in order to improve the ride comfort of the vehicle, the linear electromagnetic actuator in the suspension is connected in parallel with the elastic element and installed in the shock absorber.

[0003] In recent years, active suspension technology that can improve the ride comfort and handling stability of the vehicle has attracted more and more attention, because due to the structure and physical properties of the suspension, these vibrations will be transmitted to the vehicle body and the driver to varying degrees. When the driving conditions are different, due to the influence of the spring characteristics and structure, the damping effect of the shock absorber cannot meet the ideal requirements, thereby affecting the normal driving of the vehicle and the personal feelings of the driver. Compared with other shock absorbers, passive hydraulic shock absorbers in ordinary oil shock absorbers are most widely used, which are affordable, but have poor adaptability. Although the hydraulic active shock absorber has better adaptability, it has the disadvantages of high cost and complex structure. SUMMARY

[0004] To solve the above problems, the present application provides a linear double-spring electromagnetic shock absorber for vehicles, which has wide adaptability, low cost, fast response speed, and improves the service life of the shock absorber, and further improves the ride comfort and stability of the vehicle.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is:

[0006] In the first technical scheme, a linear double-spring electromagnetic shock absorber for vehicles, characterized by comprising an end cover, a damping rod, an upper shock absorber assembly and a linear electromagnetic actuator, wherein the linear electromagnetic actuator comprises a shell, a permanent magnet ring, a coil framework and a soft iron ring, the shell is a hollow tubular structure, the inside of the shell has a plurality of permanent magnet rings arranged in the axial direction, the permanent magnet rings are all annular sheet structures, the adjacent two permanent magnet rings are separated by a soft iron ring, and the adjacent two permanent magnet rings are arranged in the same polar opposite arrangement;

[0007] The damping rod is connected to the end cover at the top, the upper shock absorber assembly is installed between the end cover and the linear electromagnetic actuator, the damping rod penetrates through the linear electromagnetic actuator along the axial center of the shell, the coil framework is installed on the section of the damping rod inside the shell, and the coil is wound on the coil framework.

[0008] As preferred, the lower end of the shell extends to form a cylindrical structure which is in communication with the inside of the shell body and is closed at the lower end, the lower end of the damping rod forms an end plate structure arranged inside the cylindrical structure, and a lower spring is arranged between the lower end face of the end plate structure and the bottom end face of the cylindrical structure.

[0009] As preferred, the inner diameter of the cylindrical structure is not less than the maximum outer diameter of the coil framework and the coil.

[0010] As preferred, the top and bottom of the inside of the shell body are respectively provided with a first sealing member and a second sealing member.

[0011] As preferred, the first sealing member and the second sealing member are both sealing gaskets.

[0012] As preferred, the upper damper assembly includes a bidirectional damper used in cooperation with the damping rod, and an upper spring sleeved outside the damping rod.

[0013] As preferred, the bidirectional damper is connected to the upper end face of the shell.

[0014] As preferred, the permanent magnet ring has N, and 4≤N≤7; the coil framework has N-1.

[0015] In the second technical solution, a vehicle uses a linear double-spring electromagnetic damper for vehicles, characterized in that the linear double-spring electromagnetic damper for vehicles is the linear double-spring electromagnetic damper for vehicles according to any one of claims 1-8.

[0016] The beneficial effects of using the present application are:

[0017] 1. The damper uses a linear electromagnetic actuator as the main damping component, which increases the damping effect through the linear electromagnetic actuator. Compared with traditional hydraulic or pneumatic damping devices, it has the advantage of fast response speed, meets the damping requirements of vehicles driving on various road surfaces, and can buffer the vehicle bumping, improve the ride comfort and stability of the vehicle.

[0018] 2. The damper is provided with damping components on both sides of the linear electromagnetic actuator, wherein the upper spring and the lower spring arranged at both ends of the linear electromagnetic actuator are used, the upper spring provides stiffness for the damper, the lower spring can reduce the wear inside the damper, improve the service life of the damper, and further improve the ride comfort and stability of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Figure 1 is a partial cross-sectional view of the linear double-spring electromagnetic damper for vehicles of the present application and a vehicle.

[0020] The reference signs include:

[0021] 1 - end cover, 2 - damping rod, 3 - bidirectional damper, 4 - first sealing element, 5 - permanent magnet ring, 6 - soft iron ring, 7 - coil former, 8 - second sealing element, 9 - lower spring, 10 - shell, 11 - damping rod inner section, 12 - upper spring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present technical solution clearer, the present technical solution will be further described in detail below in combination with specific embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present technical solution.

[0023] As shown in Figure 1 The present embodiment proposes a linear double-spring electromagnetic damper for vehicles, comprising an end cover 1, a damping rod 2, an upper damper assembly and a linear electromagnetic actuator, wherein the linear electromagnetic actuator comprises a shell 10, a permanent magnet ring 5 and a coil former 7, the shell 10 is a hollow tubular structure, the inside of the shell 10 has a plurality of permanent magnet rings 5 arranged axially, each permanent magnet ring 5 is an annular sheet structure, two adjacent permanent magnet rings 5 are separated by a soft iron ring 6, and the two adjacent permanent magnet rings 5 are arranged in a same-pole opposite arrangement; the damping rod 2 is connected to the top of the end cover 1, the upper damper assembly is installed between the end cover 1 and the linear electromagnetic actuator, the damping rod 2 penetrates the linear electromagnetic actuator along the axis of the shell 10, the coil former 7 is installed in the damping rod inner section 11, and a coil is wound on the coil former 7.

[0024] Specifically, the end cover 1 is a disc structure, the end cover 1 is used to mount the electromagnetic damper on the vehicle suspension, the lower part of the end cover 1 is connected to the damping rod 2, the lower part of the damping rod 2 is inserted into the shell 10, in the present embodiment, the main body of the shell 10 is a cylindrical cylinder, the damping rod 2 is coaxially arranged with the shell 10, and a plurality of permanent magnet rings 5 are installed inside the shell 10, as shown in Figure 1 The first permanent magnet ring 5 and the second permanent magnet ring 5 are arranged in a same-pole opposite arrangement, and the permanent magnet rings 5 and the soft iron rings 6 are arranged alternately.

[0025] When the damping rod 2 is impacted, the damping rod 2 moves axially, and the permanent magnet rings 5 generate magnetic induction lines that start from the N level of the permanent magnet and return to the S level of the permanent magnet. When the coil moves back and forth in the magnetic field along a straight line, it will cut the magnetic induction lines to generate an induced electromotive force. When the coil forms a closed loop, an electric current is generated, thereby forming an electromagnetic damping.

[0026] In the lower position of the shell 10, the lower end of the shell 10 extends to form a cylindrical structure which is in communication with the inside of the shell 10 and is closed at the lower end, the lower end of the damping rod 2 forms an end plate structure arranged inside the cylindrical structure, and the lower end surface of the end plate structure and the bottom end surface of the cylindrical structure are provided with the lower spring 9. The function of the lower spring 9 is to support the damping rod 2 from the lower end, and the lower spring 9 can store the impact vibration energy, and the energy is consumed by the linear electromagnetic actuator. At the same time, the lower spring 9 also increases the buffering and damping effect, avoids damage to the damper, and further improves the smoothness and stability of the vehicle running.

[0027] The inner diameter of the cylindrical structure is not less than the maximum outer diameter of the coil former 7 and the coil, so that part of the coil former 7 is allowed to enter the cylindrical structure during the downward movement of the damping rod 2.

[0028] The top and bottom of the inside of the shell 10 are respectively provided with the first sealing piece 4 and the second sealing piece 8, and the first sealing piece 4 and the second sealing piece 8 are both sealing gaskets. The function of the first sealing piece 4 and the second sealing piece 8 is to prevent foreign matter from entering the linear electromagnetic actuator.

[0029] As shown in the upper part of the linear electromagnetic actuator, the upper damper assembly includes a bidirectional damper 3 used in cooperation with the damping rod 2, and an upper spring 12 sleeved outside the damping rod 2. Specifically, the bidirectional damper 3 is connected to the upper end surface of the shell 10. The damper is arranged on both the upper and lower sides of the linear electromagnetic actuator, and the upper spring 12 and the lower spring 9 arranged at both ends of the linear electromagnetic actuator are used. The upper spring provides stiffness for the damper, and the lower spring can reduce the wear in the damper and improve the service life of the damper.

[0030] As shown in the upper part of the linear electromagnetic actuator, the upper damper assembly includes a bidirectional damper 3 used in cooperation with the damping rod 2, and an upper spring 12 sleeved outside the damping rod 2. Specifically, the bidirectional damper 3 is connected to the upper end surface of the shell 10. The damper is arranged on both the upper and lower sides of the linear electromagnetic actuator, and the upper spring 12 and the lower spring 9 arranged at both ends of the linear electromagnetic actuator are used. The upper spring provides stiffness for the damper, and the lower spring can reduce the wear in the damper and improve the service life of the damper. Figure 1 As shown in the upper part of the linear electromagnetic actuator, the upper damper assembly includes a bidirectional damper 3 used in cooperation with the damping rod 2, and an upper spring 12 sleeved outside the damping rod 2. Specifically, the bidirectional damper 3 is connected to the upper end surface of the shell 10. The damper is arranged on both the upper and lower sides of the linear electromagnetic actuator, and the upper spring 12 and the lower spring 9 arranged at both ends of the linear electromagnetic actuator are used. The upper spring provides stiffness for the damper, and the lower spring can reduce the wear in the damper and improve the service life of the damper.

[0031] In addition, the embodiment also proposes a vehicle using the linear double-spring electromagnetic damper for vehicles, and the linear double-spring electromagnetic damper for vehicles is the linear double-spring electromagnetic damper for vehicles as described above.

[0032] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0033] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0034] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0035] The above content is only a preferred embodiment of the present invention. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the ideas of the present invention. As long as these changes do not depart from the concept of the present invention, they all fall within the protection scope of this patent.

Claims

1. A linear dual-spring electromagnetic vibration damper for vehicles, characterized in that: The device includes an end cap, a damping rod, an upper shock absorber assembly, and a linear electromagnetic actuator. The linear electromagnetic actuator includes a housing, a permanent magnet ring, a coil frame, and a soft iron ring. The housing is a hollow tubular structure. Inside the housing are several axially arranged permanent magnet rings, each of which is a ring-shaped sheet structure. Adjacent permanent magnet rings are separated by soft iron rings, and adjacent permanent magnet rings are arranged in a same-pole-opposite arrangement. The damping rod is connected to the end cap at the top, the upper shock absorber assembly is installed between the end cap and the linear electromagnetic actuator, the damping rod passes through the linear electromagnetic actuator along the axis of the housing, the coil frame is installed on the section of the damping rod located inside the housing, and a coil is wound on the coil frame; The lower end of the housing extends to form a cylindrical structure that communicates with the interior of the housing body. The lower end of the damping rod forms an end plate structure disposed inside the cylindrical structure. A lower spring is disposed between the lower end face of the end plate structure and the bottom end face of the cylindrical structure. The top and bottom of the interior of the housing body are respectively provided with a first sealing element and a second sealing element; The upper damper assembly includes a bidirectional damper that works in conjunction with a damping rod, and an upper spring that is fitted onto the outside of the damping rod. The inner diameter of the cylindrical structure is not less than the maximum outer diameter of the coil frame and the coil. Both the first and second sealing elements are gaskets; The bidirectional damper is connected to the upper end face of the housing; There are N permanent magnet rings, and 4≤N≤7; there are N-1 coil frames.

2. A vehicle using a linear dual-spring electromagnetic shock absorber, characterized in that, The automotive linear dual-spring electromagnetic vibration damper is the automotive linear dual-spring electromagnetic vibration damper as described in claim 1.

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