Electromagnetic shock absorber, suspension system and vehicle

Abstract

The utility model discloses an electromagnetic shock absorber, a suspension system and a vehicle, the electromagnetic shock absorber comprises a shell, a first push rod, a second push rod and a driving structure, the first push rod and the second push rod are respectively and movably arranged on the shell, one of the first push rod and the second push rod is suitable for being connected to a vehicle body, and the other one is suitable for being connected to a wheel; the driving structure is used for driving the first push rod and the second push rod to move in the opposite directions so as to adjust the length of the electromagnetic shock absorber. Therefore, by arranging the first push rod and the second push rod, the driving structure can drive the first push rod and the second push rod to move in the opposite directions correspondingly, the response speed of the electromagnetic shock absorber can be increased, and the first push rod and the second push rod are small in length size and high in lateral strength resistance; the lateral load resistance of the electromagnetic shock absorber can be improved, and meanwhile the occupied space of the electromagnetic shock absorber in the length direction can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration reduction, in particular to an electromagnetic vibration absorber, a suspension system and a vehicle. Background Art

[0002] In the related art, the shock absorber usually adopts a ball screw structure. In this structure, the ball screw is long, has poor lateral strength resistance, and has a slow response speed, which results in poor vibration reduction effect of the shock absorber and affects the user's driving experience. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an electromagnetic vibration absorber, which has a fast response speed.

[0004] An electromagnetic shock absorber comprises: a shell; a first push rod and a second push rod, wherein the first push rod and the second push rod are respectively movably arranged on the shell, one of the first push rod and the second push rod is suitable for being connected to a vehicle body, and the other is suitable for being connected to a wheel; a driving structure, wherein the driving structure is used to drive the first push rod and the second push rod to move in opposite directions respectively to adjust the length of the electromagnetic shock absorber.

[0005] According to the electromagnetic shock absorber of the embodiment of the utility model, by setting the first push rod and the second push rod, the driving structure can drive the first push rod and the second push rod to move respectively, and the movement directions of the first push rod and the second push rod are opposite, which is beneficial to improving the response speed of the electromagnetic shock absorber. Compared with the shock absorber with a ball screw structure, the response speed of the electromagnetic shock absorber of the present application can be doubled, and the length of the first push rod and the second push rod is small, and the lateral strength resistance is strong, which is beneficial to improving the ability of the electromagnetic shock absorber to resist lateral loads, and at the same time can reduce the space occupied by the electromagnetic shock absorber in the length direction.

[0006] According to some embodiments of the present invention, the driving structure includes a driver, and the first push rod and the second push rod are driven to move by the same driver.

[0007] According to some embodiments of the utility model, the driving structure also includes a transmission gear, which is connected to the driver to be driven to rotate by the driver, and the first push rod and the second push rod are spaced apart on opposite sides of the transmission gear and are respectively engaged with the transmission gear.

[0008] According to some embodiments of the present utility model, the transmission gear has a gear tooth portion, and the first push rod and the second push rod are both engaged with the gear tooth portion.

[0009] According to some embodiments of the present invention, in the longitudinal section of the transmission gear, the orthographic projection of the portion of the gear tooth portion meshing with the first push rod and the orthographic projection of the portion of the gear tooth portion meshing with the second push rod at least partially overlap.

[0010] According to some embodiments of the utility model, the transmission gear is a helical gear, the axial direction of the driver is parallel to the moving direction of the first push rod, the angle between the central axis of the transmission gear and the preset plane is α, 30°≤α≤40°, and the preset plane is perpendicular to the axial direction of the driver.

[0011] According to some embodiments of the present utility model, at least one of a rolling element, a lubricating element and a wear-resistant layer is respectively provided between the first push rod and the second push rod and the housing.

[0012] According to some embodiments of the utility model, the driving structure includes a driver and a transmission gear, the shell includes a first shell, a second shell and a third shell arranged in sequence along the length direction of the electromagnetic shock absorber, at least one of the first shell and the third shell is installed with the driver, the second shell is installed with the transmission gear, one end of the first push rod extends out of the end of the first shell away from the third shell, and the other end extends into the third shell, and the first shell and the third shell are both slidingly matched with the first push rod, one end of the second push rod extends out of the end of the third shell away from the first shell, and the other end extends into the first shell, and the first shell and the third shell are both slidingly matched with the second push rod.

[0013] According to some embodiments of the utility model, each of the first push rod and the second push rod is respectively provided with a first buffer limit structure, and the first buffer limit structure is suitable for contacting one end of the first shell and the third shell opposite to each other to limit the movement displacement of the first push rod or the second push rod.

[0014] According to some embodiments of the utility model, a second buffer limit structure is provided on the third shell, and the second buffer limit structure is suitable for contacting with the other end of the first push rod to limit the movement displacement of the first push rod; and / or, a third buffer limit structure is provided on the first shell, and the third buffer limit structure is suitable for contacting with the other end of the second push rod to limit the movement displacement of the second push rod.

[0015] Another object of the present invention is to provide a suspension system.

[0016] A suspension system comprises the electromagnetic shock absorber mentioned above.

[0017] The advantages of the suspension system are the same as those of the above-mentioned electromagnetic shock absorber, which will not be elaborated here.

[0018] Another object of the present invention is to provide a vehicle.

[0019] A vehicle comprises the above suspension system.

[0020] The advantages of the vehicle are the same as those of the suspension system described above, which will not be elaborated here.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 A cross-sectional view of the electromagnetic vibration absorber according to an embodiment of the utility model Figure 1 ;

[0024] Figure 2 A cross-sectional view of the electromagnetic vibration absorber according to an embodiment of the utility model Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the transmission gear according to an embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of the electromagnetic vibration absorber according to the embodiment of the utility model when it is extended;

[0027] Figure 5 It is a schematic diagram of the electromagnetic shock absorber during compression according to an embodiment of the utility model.

[0028] Reference numerals:

[0029] Electromagnetic vibration absorber 100, housing 110, first housing 111, second housing 112, third housing 113, first slideway 114, second slideway 115,

[0030] The first push rod 120, the second push rod 130,

[0031] Driving structure 140, driver 141, rotor 1411, stator 1412,

[0032] Transmission gear 142, gear tooth portion 1421,

[0033] Motor helical gear 143,

[0034] A first buffer limiting structure 150 , a second buffer limiting structure 160 , a third buffer limiting structure 170 , and a ball joint kinematic pair 180 . DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present utility model, it is necessary to understand that the terms "center", "length", "upper", "lower", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Reference below Figure 1-Figure 5 An electromagnetic vibration absorber 100 according to an embodiment of the present invention is described.

[0039] like Figure 1 As shown, the electromagnetic shock absorber 100 according to the embodiment of the utility model includes: a shell 110, a first push rod 120, a second push rod 130 and a driving structure 140. The first push rod 120 and the second push rod 130 are respectively movably arranged on the shell 110. One of the first push rod 120 and the second push rod 130 is suitable for connecting to the vehicle body, and the other is suitable for connecting to the wheel. The driving structure 140 is used to drive the first push rod 120 and the second push rod 130 to move in opposite directions respectively to adjust the length of the electromagnetic shock absorber 100 and realize the extension or shortening of the electromagnetic shock absorber 100.

[0040] Specifically, the housing 110 can provide a mounting position for the first push rod 120 and the second push rod 130 to facilitate the installation of the first push rod 120 and the second push rod 130. Figure 4 and Figure 5 , the first push rod 120 and the second push rod 130 are arranged in parallel, and the driving structure 140 can drive the first push rod 120 and the second push rod 130 to move in opposite directions respectively to adjust the length of the electromagnetic shock absorber 100, so as to adjust the distance between the vehicle body and the wheel, and realize the adjustment of the wheel height and the vehicle posture height. The first push rod 120 and the second push rod 130 can move relative to the housing 110 in the up and down directions respectively, and the driving structure 140 can drive the first push rod 120 to move upward and drive the second push rod 130 to move downward at the same time. The driving structure 140 can also drive the first push rod 120 to move downward and drive the second push rod 130 to move upward at the same time, so that the length of the electromagnetic shock absorber 100 can be increased or reduced through the driving structure 140.

[0041] For example, the first push rod 120 and the second push rod 130 can move relative to the shell 110 in the up and down directions respectively, the upper end of the first push rod 120 can protrude from the shell 110 and be connected to the vehicle body, the lower end of the second push rod 130 can protrude from the shell 110 and can be connected to the wheel, and the upper end of the first push rod 120 and the lower end of the second push rod 130 are respectively located at the upper and lower sides of the shell 110, and the driving structure 140 can drive the upper end of the first push rod 120 and the lower end of the second push rod 130 to move in a direction away from the shell 110, or to move in a direction close to the shell 110, then the length of the electromagnetic shock absorber 100 per unit time is The change can be simply understood as the sum of the moving distance corresponding to the upper end of the first push rod 120 and the moving distance corresponding to the lower end of the second push rod 130. For example, the increase in the length of the electromagnetic shock absorber 100 can be simply understood as the sum of the distance the upper end of the first push rod 120 moves upward and the distance the lower end of the second push rod 130 moves downward, and the decrease in the length of the electromagnetic shock absorber 100 can be simply understood as the sum of the distance the upper end of the first push rod 120 moves downward and the distance the lower end of the second push rod 130 moves upward. It can be seen that the length change of the electromagnetic shock absorber 100 per unit time can be increased, which is beneficial to improving the response speed of the electromagnetic shock absorber 100.

[0042] The shapes of the first push rod 120 and the second push rod 130 include but are not limited to cylindrical, prism, etc.

[0043] In the related art, the shock absorber usually adopts a ball screw structure. In this structure, there is only one ball screw, and its length must meet the total travel of the suspension, which makes the ball screw long, has poor lateral strength resistance, and slow response speed.

[0044] In the present application, by setting a first push rod 120 and a second push rod 130, the driving structure 140 can respectively drive the first push rod 120 and the second push rod 130 to move, and the movement directions of the first push rod 120 and the second push rod 130 are opposite, which is beneficial to improving the response speed of the electromagnetic shock absorber 100. Compared with the shock absorber with a ball screw structure, the response speed of the electromagnetic shock absorber 100 of the present application can be doubled, and the first push rod 120 and the second push rod 130 have a small length and a strong lateral strength resistance, which is beneficial to improving the ability of the electromagnetic shock absorber 100 to resist lateral loads, and at the same time can reduce the space occupied by the electromagnetic shock absorber 100 in the length direction.

[0045] It should be noted that the "length dimension" refers to the dimension of each component along the direction parallel to the axial direction of the electromagnetic shock absorber 100. The moving directions of the first push rod 120 and the second push rod 130 are parallel to the axial direction of the electromagnetic shock absorber 100. The radial direction of the electromagnetic shock absorber 100 refers to the direction in the radial plane passing through the central axis of the electromagnetic shock absorber 100. The radial direction of the electromagnetic shock absorber 100 is perpendicular to the axial direction of the electromagnetic shock absorber 100. The "wheel" refers to the wheel end, which can be a moving part such as a suspension arm or a steering knuckle that jumps with the wheel end.

[0046] like Figure 1 As shown, in some embodiments of the present invention, the driving structure 140 includes a driver 141 , and the first push rod 120 and the second push rod 130 are driven to move by the same driver 141 .

[0047] Specifically, the same driver 141 can synchronously drive the first push rod 120 and the second push rod 130 to move in opposite directions, which is beneficial for the first push rod 120 and the second push rod 130 to move synchronously. At the same time, it can reduce the setting of parts in the electromagnetic shock absorber 100, reduce the production cost of the electromagnetic shock absorber 100, and help to improve the assembly convenience of the electromagnetic shock absorber 100.

[0048] In other examples, two drivers 141 may be provided, and the two drivers 141 are respectively connected to the first push rod 120 and the second push rod 130 for transmission and respectively drive the first push rod 120 and the second push rod 130 to move. At this time, there is a linkage setting between the two drivers 141, so that the moving direction of the first push rod 120 is opposite to the moving direction of the second push rod 130, which is beneficial to improving the response speed of the first push rod 120 and the second push rod 130, and is beneficial to reducing the complexity of the transmission connection between the first push rod 120 and the corresponding driver 141, and reducing the complexity of the transmission connection between the second push rod 130 and the corresponding driver 141.

[0049] It can be understood that in the embodiments of the present application, no matter whether the first push rod 120 and the second push rod 130 are driven to move by the same driver 141, or the first push rod 120 and the second push rod 130 are driven to move by different drivers 140 respectively, the moving distance of the first push rod 120 and the moving distance of the second push rod 130 per unit time may be equal or different. In other words, the moving speed of the first push rod 120 and the moving speed of the second push rod 130 may be equal or different.

[0050] Combination Figures 1 to 3 In some embodiments of the utility model, the driving structure 140 also includes a transmission gear 142, which is connected to the driver 141 to be driven to rotate by the driver 141, and the first push rod 120 and the second push rod 130 are spaced apart on opposite sides of the transmission gear 142, and the first push rod 120 and the second push rod 130 are respectively engaged with the transmission gear 142.

[0051] Exemplarily, the transmission gear 142 can be arranged at one end of the driver 141 in the axial direction to facilitate the assembly of the driver 141 and the transmission gear 142, and the driver 141 cooperates with the transmission gear 142, and the driver 141 can drive the transmission gear 142 to rotate, and the first push rod 120 and the second push rod 130 are respectively engaged with the transmission gear 142, so that when the transmission gear 142 rotates, the first push rod 120 and the second push rod 130 can be driven to move in opposite directions, and the first push rod 120 and the second push rod 130 are arranged at intervals to facilitate the engagement with the transmission gear 142 respectively, and at the same time, the first push rod 120 and the second push rod 130 can be prevented from interfering with each other during the movement, thereby ensuring the independence of the movement of the first push rod 120 and the second push rod 130.

[0052] Exemplarily, the first push rod 120 and the second push rod 130 can be spaced and arranged opposite to each other in a direction perpendicular to the axial direction of the electromagnetic shock absorber 100, and the transmission gear 142 can be arranged between the first push rod 120 and the second push rod 130. At this time, the first push rod 120 and the second push rod 130 can be respectively arranged on opposite sides of the outer peripheral side of the transmission gear 142, which is beneficial to improve the structural compactness of the electromagnetic shock absorber 100 in the axial direction, that is, shortening the length of the electromagnetic shock absorber 100, and is beneficial to improving the transmission reliability between the transmission gear 142 and the first push rod 120 and the second push rod 130.

[0053] Of course, in other embodiments of the present application, the first push rod 120 and the second push rod 130 can also be arranged inside and outside to cooperate with each other. In this case, the first push rod 120 and the second push rod 130 can be driven to move by the same driver 141 or by different drivers 141 respectively.

[0054] In some embodiments of the present invention, the transmission gear 142 has a gear tooth portion 1421 , and both the first push rod 120 and the second push rod 130 are meshed with the gear tooth portion 1421 .

[0055] Specifically, the gear tooth portion 1421 is arranged around the transmission gear 142 along the circumferential direction of the transmission gear 142, and the first push rod 120 and the second push rod 130 are arranged at intervals and are both engaged with the gear tooth portion 1421. When the transmission gear 142 rotates, the gear tooth portion 1421 can drive the first push rod 120 and the second push rod 130 to move in opposite directions at the same speed, which is conducive to achieving the synchronization of the moving distances of the first push rod 120 and the second push rod 130.

[0056] In some embodiments of the utility model, on the longitudinal section of the transmission gear 142, the orthographic projection of the part of the gear portion 1421 meshing with the first push rod 120 and the orthographic projection of the part of the gear portion 1421 meshing with the second push rod 130 at least partially overlap. For example, the gear portion 1421 has a first matching portion and a second matching portion, and in the axial direction of the transmission gear 142, the first push rod 120 meshes with the entire first matching portion, and the second push rod 120 meshes with the entire second matching portion, and the first matching portion and the second matching portion at least partially overlap, then a part of the first matching portion is a part of the second matching portion, or the first matching portion is the second matching portion. In this way, the distance of the reaction force applied by the first push rod 120 and the second push rod 130 to the transmission gear 142 in the axial direction of the transmission gear 142 can be reduced, the force applied to the transmission gear 142 is improved, and the tendency of the transmission gear 142 to twist is reduced.

[0057] Exemplarily, the meshing positions of the first push rod 120 and the second push rod 130 with the transmission gear 142 are located in the same part of the transmission gear 142 in its axial direction, which is beneficial to improving the meshing effect of the first push rod 120 and the second push rod 130 with the transmission gear 142, improving the force on the transmission gear 142, and preventing the transmission gear 142 from twisting, thereby helping to improve the meshing reliability between the transmission gear 142 and the first push rod 120 and the second push rod 130.

[0058] Combination Figures 1 to 3 In some embodiments of the utility model, the transmission gear 142 is a helical gear, the axial direction of the driver 141 (parallel to the axial direction of the electromagnetic shock absorber 100) is parallel to the moving direction of the first push rod 120, and the angle between the central axis of the transmission gear 142 and the preset plane is α, 30°≤α≤40°, and the preset plane is perpendicular to the axial direction of the driver 141.

[0059] Specifically, the transmission gear 142 is a helical gear, and the first push rod 120 and the second push rod 130 are respectively arranged on both sides of the transmission gear 142 in the radial direction. Helical teeth are formed on the first push rod 120 and the second push rod 130, and the first push rod 120 and the second push rod 130 can be respectively engaged with the transmission gear 142, and the length of the helical teeth arranged on the first push rod 120 and the second push rod 130 meets the upward or downward jump stroke of the suspension system, which is beneficial to ensure the performance of the suspension system.

[0060] The first push rod 120 and the second push rod 130 are both arranged parallel to the axial direction of the driver 141. The driver 141 can drive the first push rod 120 and the second push rod 130 to move in a direction parallel to the axial direction of the driver 141. By configuring the transmission gear 142 as a helical gear, it is beneficial to increase the contact area between the transmission gear 142 and the first push rod 120 and the second push rod 130, thereby facilitating the improvement of transmission stability. Moreover, the angle between the central axis of the transmission gear 142 and the preset plane is defined as α, 30°≤α≤40°, for example: α can be 30°, 31°, 32°, 33°, 37°, or 40°, etc., which is beneficial to further increase the meshing area between the transmission gear 142 and the first push rod 120 and the second push rod 130, thereby facilitating the improvement of transmission stability.

[0061] Combination Figures 1 to 3 In some examples, the transmission gear 142 can be constructed as a helical worm, and a shell structure is provided on the outside of the helical worm, the shell structure can be rigidly connected to a first shell 111 or a third shell 113 in which a driver 141 is provided, or the shell structure can be a part of the second shell 112 to fix the helical worm, and the helical worm can be assembled with the shell structure through a bearing so that the helical worm can rotate freely relative to the shell structure.

[0062] It should be noted that the structure of the transmission gear 142 is not limited to helical gears. For example, the transmission gear 142 can also be constructed as a bevel gear or a gear of other structural forms. Accordingly, the angle α between the central axis of the transmission gear 142 and the preset plane is defined as not limited to 30° to 40°, but can also be 0°, etc. The specific structure and arrangement of the transmission gear 142 can be determined according to actual production requirements and are not specifically limited here.

[0063] In some embodiments of the present invention, at least one of a rolling element, a lubricating element, and a wear-resistant layer is respectively provided between the first push rod 120 and the second push rod 130 and the housing 110, then at least one of a rolling element, a lubricating element, and a wear-resistant layer is respectively provided between the first push rod 120 and the housing 110, and at least one of a rolling element, a lubricating element, and a wear-resistant layer is respectively provided between the second push rod 130 and the housing 110.

[0064] Specifically, the first push rod 120 and the second push rod 130 can slide relative to the housing 110. At least one of a rolling element and a lubricating element is provided between the first push rod 120 and the housing 110 and between the second push rod 130 and the housing 110 to reduce the friction between the first push rod 120 and the second push rod 130 and the housing 110, which is conducive to improving the smoothness of the movement of the first push rod 120 and the second push rod 130. A wear-resistant layer can be provided between the first push rod 120 and the housing and between the second push rod 130 and the housing 110 to reduce the wear between the first push rod 120 and the second push rod 130 and the housing 110, which is conducive to improving the service life of the electromagnetic shock absorber 100.

[0065] For example, rolling elements, such as ball bearings or needle rollers, may be provided between the first push rod 120 and the housing 110, and lubricating elements or filling lubricants, grease, etc. may be provided between the second push rod 130 and the housing 110. At the same time, at least one of the first push rod 120 and the housing 110 and at least one of the second push rod 130 and the housing 110 may also be provided with wear-resistant layers, respectively, so as to improve the smoothness of movement of the first push rod 120 and the second push rod 130, while further reducing the friction between the first push rod 120 and the second push rod 130 and the housing 110, thereby increasing the service life of the electromagnetic shock absorber 100.

[0066] It should be noted that the arrangement between the first push rod 120 and the second push rod 130 and the housing 110 is not limited to the above example. For example, rolling elements may be provided between the first push rod 120 and the second push rod 130 and the housing 110. The specific arrangement between the first push rod 120 and the second push rod 130 and the housing 110 may be determined according to actual production requirements and is not specifically limited here.

[0067] Combination Figure 1 and Figure 2 In some embodiments of the utility model, the driving structure 140 includes a driver 141 and a transmission gear 142, the shell 110 includes a first shell 111, a second shell 112 and a third shell 113 arranged in sequence along the length direction of the electromagnetic shock absorber 100, at least one of the first shell 111 and the third shell 113 is installed with the driver 141, and the second shell 112 is installed with the transmission gear 142.

[0068] For example, in combination Figure 1 and Figure 2The first shell 111, the second shell 112 and the third shell 113 can be arranged in sequence from top to bottom, the second shell 112 is connected between the first shell 111 and the third shell 113 to improve the assembly stability of the first shell 111 and the third shell 113, and a driver 141 can be provided and installed on the third shell 113, and a transmission gear 142 is installed on the second shell 112 and connected to the driver 141; of course, the driver 141 can also be installed on the first shell 111.

[0069] In other examples, the first shell 111, the second shell 112 and the third shell 113 can be arranged in sequence from bottom to top, and one driver 141 can be provided and installed on the first shell 111; or two drivers 141 can be provided, and the two drivers 141 can be respectively provided on the first shell 111 and the third shell 113.

[0070] For ease of description, the following description takes the example that the first shell 111 , the second shell 112 and the third shell 113 are arranged from top to bottom, and the driver 141 is provided with one and installed on the third shell 113 .

[0071] One end of the first push rod 120 extends out of an end of the first shell 111 away from the third shell 113, and the other end extends into the third shell 113. The first shell 111 and the third shell 113 both slide together with the first push rod 120. One end of the second push rod 130 extends out of an end of the third shell 113 away from the first shell 111, and the other end extends into the first shell 111. The first shell 111 and the third shell 113 both slide together with the second push rod 130.

[0072] The first push rod 120 is always matched with the first housing 111 and the third housing 113 during the movement, and the second push rod 130 is always matched with the first housing 111 and the third housing 113 during the movement, so as to further prevent the first push rod 120 and the second push rod 130 from tilting, and the first housing 111 and the second housing 112 can support the first push rod 120 and the second push rod 130 to improve the lateral strength of the first push rod 120 and the second push rod 130. Moreover, no matter for the first push rod 120 or the second push rod 130, the position where the force applied by the transmission gear 142 is applied to it is located between the force applied by the first housing 111 and the force applied by the third housing 113.

[0073] Exemplarily, a first slide 114 and a second slide 115 extending along the axial direction of the electromagnetic vibration absorber 100 are formed in the shell 110, the first slide 114 includes a first section and a second section, the second slide 115 includes a third section and a fourth section, the first section is arranged in the first shell 111, the second section is arranged in the third shell 113, and the first section and the second section are arranged at intervals along the axial direction of the electromagnetic vibration absorber 100. Similarly, the third section is arranged in the first shell 111, the fourth section is arranged in the third shell 113, the third section and the fourth section are arranged at intervals along the axial direction of the electromagnetic vibration absorber 100, and the middle position of the second shell 112 is hollowed out to avoid the arrangement of the first push rod 120 and the second push rod 130, wherein the first slide 114 and the second slide 115 are arranged at intervals along the radial direction of the electromagnetic vibration absorber 100.

[0074] Furthermore, one end of the first push rod 120 is arranged in the first slide 114, and a plane slide is formed on a side surface of the first push rod 120 that is arranged opposite to the first shell 111 and the third shell 113 in the radial direction, so that the first push rod 120 can move relative to the shell 110, and one axial end of the first push rod 120 extends from an end of the first shell 111 away from the third shell 113 through the first slide 114, so that the first push rod 120 is connected to the vehicle body or one of the wheels, and the other end of the first push rod 120 extends into the first shell 111 through the first slide 114, and the transmission gear 142 is arranged in the second shell 112 and meshes with the first push rod 120, so that the first push rod 120 can slide relative to the first shell 111 and the third shell 113 along an axial direction parallel to the electromagnetic shock absorber 100.

[0075] Furthermore, one end of the second push rod 130 is arranged in the second slide 115, and the second push rod 130 forms a planar slide on a side surface arranged opposite to the first shell 111 and the third shell 113 in the radial direction, so that the second push rod 130 can move relative to the shell 110, and one axial end of the second push rod 130 extends from an end of the third shell 113 away from the first shell 111 through the second slide 115, so that the second push rod 130 is connected to the other of the vehicle body or the wheel, and the other end of the second push rod 130 extends into the second shell 112 through the second slide 115, and the transmission gear 142 can engage with the second push rod 130, so that the second push rod 130 can slide relative to the first shell 111 and the third shell 113 along an axial direction parallel to the electromagnetic shock absorber 100.

[0076] Combination Figure 1 and Figure 2In some embodiments of the utility model, the driver 141 is a motor, and the driver 141 is arranged in the third shell 113. The driver 141 includes a rotor 1411 and a stator 1412, wherein the stator 1412 is interference fit with the third shell 113 so that the third shell 113 can fix the stator 1412, and the rotor 1411 is sleeved on the radial outer side of the stator 1412, and the rotor 1411 can rotate relative to the stator 1412. A motor bevel gear 143 is provided at one end of the rotor 1411 close to the second shell 112, and the motor bevel gear 143 is rigidly connected to the rotor 1411, and the rotor 1411 can drive the motor bevel gear 143 to rotate.

[0077] Furthermore, the transmission gear 142 is arranged at one end of the rotor 1411 close to the second shell 112, and the transmission gear 142 is meshed with the motor bevel gear 143. When the rotor 1411 rotates, the transmission gear 142 can be driven to rotate by the motor bevel gear 143. The transmission gear 142 can drive the first push rod 120 and the second push rod 130 to move in the axial direction, thereby adjusting the distance between the vehicle body and the wheel, that is, adjusting the height of the wheel and the posture of the vehicle, and the damping force of the electromagnetic shock absorber 100 can be adjusted by adjusting the power of the driver 141.

[0078] It should be noted that if Figure 2 As shown, the meshing position of the transmission gear 142 and the motor bevel gear 143 and the gear tooth portion 1421 (i.e., the meshing position of the transmission gear 142 and the first push rod 120 and the second push rod 130) are staggered in the axial direction of the transmission gear 142, thereby facilitating preventing the first push rod 120 and the second push rod 130 from interfering with the motor bevel gear 143 in the axial direction.

[0079] In other examples, the stator 1412 is sleeved on the radially outer side of the rotor 1411 . The specific arrangement of the rotor 1411 and the stator 1412 is not specifically limited herein, as long as the rotor 1411 can rotate relative to the stator 1412 and is rigidly connected to the motor bevel gear 143 .

[0080] like Figure 1As shown, in some embodiments of the present invention, each of the first push rod 120 and the second push rod 130 is provided with a first buffering limiting structure 150, and the first buffering limiting structure 150 on the first push rod 120 can move synchronously with the first push rod 120, and the first buffering limiting structure 150 on the second push rod 130 can move synchronously with the second push rod 130; the first buffering limiting structure 150 is suitable for contacting with the opposite ends of the first shell 111 and the third shell 113 to limit the movement displacement of the first push rod 120 or the second push rod 130. It can be seen that the first buffering limiting structure 150 can be arranged between the first shell 111 and the third shell 113, and the first buffering limiting structure 150 can not only limit the maximum stroke of the first push rod 120 and the second push rod 130, but also absorb the collision energy, reduce the collision damage between the first push rod 120, the second push rod 130 and other components, and realize the movement limiting protection of the first push rod 120 or the second push rod 130.

[0081] For example, when one end of the first push rod 120 extending out of the first housing 111 moves in the axial direction toward the third housing 113, the first buffering limiting structure 150 disposed on the first push rod 120 stops and cooperates with one end of the third housing 113 close to the second housing 112, and the first buffering limiting structure 150 can limit the above-mentioned one end of the first push rod 120 from continuing to move in the direction close to the third housing 113; when one end of the first push rod 120 extending out of the first housing 111 moves away from the third housing 1113 in the axial direction, the first buffering limiting structure 150 disposed on the first push rod 120 stops and cooperates with one end of the first housing 111 close to the second housing 112, and the first buffering limiting structure 150 can limit the above-mentioned one end of the first push rod 120 from continuing to move in the direction away from the third housing 113. It can be seen that the first buffering limiting structure 150 on the first push rod 120 can realize the movement limitation of the first push rod 120 in two moving directions in the length direction of the electromagnetic shock absorber 100.

[0082] Similarly, the end of the second push rod 130 extending out of the third housing 113 moves in the axial direction toward the first housing 111, so that the first buffering limiting structure 150 provided on the second push rod 130 can be stopped and matched with the end of the first housing 111 close to the second housing 112 in the axial direction to prevent the second push rod 130 from continuing to move in the direction close to the first housing 111. The first buffering limiting structure 150 can also play a role in buffering and absorbing energy, reducing the noise generated by the electromagnetic shock absorber 100; the end of the second push rod 130 extending out of the third housing 113 moves in the axial direction away from the first housing 111, so that the first buffering limiting structure 150 provided on the second push rod 130 can be stopped and matched with the end of the third housing 111 close to the second housing 112 in the axial direction to prevent the second push rod 130 from continuing to move in the direction away from the first housing 111. It can be seen that the first buffering limiting structure 150 on the second push rod 130 can realize the movement limit of the second push rod 130 in two moving directions in the length direction of the electromagnetic shock absorber 100.

[0083] It should be noted that, during this process, the length of the electromagnetic absorber 100 is shortened, and when the first push rod 120 and the second push rod 130 move in the opposite direction to the above-mentioned direction, the length of the electromagnetic absorber 100 is extended.

[0084] like Figure 1 As shown, in some embodiments of the present invention, a second buffering and limiting structure 160 is provided on the third shell 113 , and the second buffering and limiting structure 160 is suitable for contacting with the other end of the first push rod 120 to limit the movement displacement of the first push rod 120 .

[0085] Exemplarily, the second buffer limit structure 160 can be arranged in the first slide 114 on the third shell 113, and the second buffer limit structure 160 can be located at one end of the first slide 114 away from the first shell 111 in the axial direction, and the second buffer limit structure 160 can be abutted against one end of the first push rod 120 extending into the third shell 113 to limit the movement displacement of the first push rod 120, and the second buffer limit structure 160 can play a role in buffering and energy absorption, reduce the collision of the first push rod 120, and help reduce the noise of the electromagnetic shock absorber 100.

[0086] A third buffering and limiting structure 170 is disposed on the first housing 111 . The third buffering and limiting structure 170 is adapted to contact with the other end of the second push rod 130 to limit the movement of the second push rod 130 .

[0087] Exemplarily, the third buffer limit structure 170 can be arranged in the second slide 115 on the first shell 111, and the third buffer limit structure 170 can be located at one end of the second slide 115 away from the third shell 113 in the axial direction, and the third buffer limit structure 170 can cooperate with one end of the push rod extending into the first shell 111 to limit the movement displacement of the second push rod 130, and the third buffer limit structure 170 can play a role in buffering and energy absorption, reduce the collision of the second push rod 130, and help reduce the noise of the electromagnetic shock absorber 100.

[0088] Optionally, a second buffer limit structure 160 can be provided on the third shell 113, and a third buffer limit structure 170 can be provided on the first shell 111; or a second buffer structure can be provided on the third shell 113 alone; or a third buffer limit structure 170 can be provided on the first shell 111 alone. The specific setting form can be determined according to actual production requirements and is not specifically limited here.

[0089] The first buffering and limiting structure 150 , the second buffering and limiting structure 160 and the third buffering and limiting structure 170 may be constructed as elastic energy-absorbing structures such as rubber blocks.

[0090] Therefore, by limiting the first push rod 120 and the second push rod 130, the extension or contraction size of the electromagnetic shock absorber 100 is limited, thereby preventing the distance between the vehicle body and the wheel from being too large or too small, thereby reducing the risk of vehicle failure.

[0091] The working principle of the electromagnetic vibration absorber 100 of the present application is briefly described below:

[0092] Stretching of the electromagnetic vibration absorber 100: Figure 4 As shown, when the rotor 1411 of the driver 141 rotates counterclockwise at a speed of ω, the rotor 1411 drives the motor bevel gear 143 to rotate at a speed of ω, and the transmission gear 142 engages with the motor bevel gear 143, so that the motor bevel gear 143 can drive the transmission gear 142 to rotate clockwise at a speed of ω. Since the first push rod 120 and the second push rod 130 are respectively arranged on both sides of the transmission gear 142, when the transmission gear 142 rotates clockwise, the transmission gear 142 can drive the second push rod 130 to move downward, and at the same time, the transmission gear 142 can drive the first push rod 120 to move upward, so that the electromagnetic shock absorber 100 is extended. Since the first push rod 120 and the second push rod 130 move synchronously at the same time, the electromagnetic shock absorber 100 of the present application can realize the stretching function of the electromagnetic shock absorber 100 more quickly.

[0093] Compression of electromagnetic shock absorber 100: Figure 5As shown, when the rotor 1411 of the driver 141 rotates clockwise at a speed of ω, the rotor 1411 drives the motor bevel gear 143 to rotate at a speed of ω, and the transmission gear 142 engages with the motor bevel gear 143, so that the motor bevel gear 143 can drive the transmission gear 142 to rotate counterclockwise at a speed of ω. Since the first push rod 120 and the second push rod 130 are respectively arranged on both sides of the transmission gear 142, when the transmission gear 142 rotates clockwise, the transmission gear 142 can drive the second push rod 130 to move upward, and at the same time, the transmission gear 142 can drive the first push rod 120 to move downward, thereby shortening the electromagnetic shock absorber 100. Since the first push rod 120 and the second push rod 130 move synchronously at the same time, the electromagnetic shock absorber 100 of the present application can realize the compression function of the electromagnetic shock absorber 100 faster.

[0094] The suspension system according to the embodiment of the present invention includes the electromagnetic shock absorber 100 mentioned above.

[0095] Since the suspension system is provided with the above-mentioned electromagnetic shock absorber 100, by setting the first push rod 120 and the second push rod 130, the driving structure 140 can drive the first push rod 120 and the second push rod 130 to move respectively, and the movement directions of the first push rod 120 and the second push rod 130 are opposite, which is beneficial to improving the response speed of the electromagnetic shock absorber 100. Compared with the shock absorber with a ball screw structure, the response speed of the electromagnetic shock absorber 100 of the present application can be doubled, and the first push rod 120 and the second push rod 130 have a small length and a strong lateral strength resistance, which is beneficial to improving the ability of the electromagnetic shock absorber 100 to resist lateral loads, and at the same time can reduce the space occupied by the electromagnetic shock absorber 100 in the length direction.

[0096] Among them, the driver 141 in the electromagnetic shock absorber 100 is configured as a rotating motor. Since the power and running direction of the rotating motor can be adjusted, the suspension system can be regulated by the rotating motor, which is beneficial to improving the response speed of the damping force of the suspension system, and is beneficial to improving the damping force of the suspension system. At the same time, the displacement of the first push rod 120 and the second push rod 130 can be accurately controlled. In addition, its production process is mature compared to the linear motor suspension, and its price is cheaper than the linear motor suspension.

[0097] like Figure 1As shown, in some embodiments of the utility model, a ball joint kinematic pair 180 is provided at one end of the first push rod 120 and the second push rod 130 extending out of the shell 110, and the ball joint kinematic pair 180 is used to connect the mating parts. For example, the end of the first push rod 120 extending out of the shell 110 can be connected to the vehicle body through the ball joint kinematic pair 180, and the end of the second push rod 130 extending out of the shell 110 can be connected to the suspension arm or the steering knuckle through the ball joint kinematic pair 180. Since the first push rod 120 and the second push rod 130 can move in opposite directions, the electromagnetic shock absorber 100 can be extended or shortened, so that the wheel end of the suspension system (i.e., the above-mentioned wheel) and the vehicle body can jump up and down relative to each other.

[0098] The following briefly describes the active working principle of the suspension system of the present application:

[0099] (1) Semi-active suspension system: When the vehicle is traveling on bumpy or pothole-prone roads, the wheels bounce. The vehicle can collect signals from sensors that detect wheel bounce, which are then processed and calculated by the control unit and output to the driver 141, so that the driver 141 can provide optimal power. The power of the driver 141 can then be converted into the damping force (or thrust) of the electromagnetic shock absorber 100 to quickly attenuate the vibration of the suspension system under this condition.

[0100] When the vehicle is traveling on different road conditions or the driver's demand is for controllability or comfort, the control unit that controls the driver 141 receives the corresponding signal, outputs and controls the driver 141 to actively adjust the power, thereby adjusting the damping force of the electromagnetic shock absorber 100 to meet different damping requirements, realize the optimal damping scheme of the suspension system, and improve the vibration reduction effect of the suspension system.

[0101] (2) Fully active damping suspension system: The vehicle actively identifies driving conditions or the vehicle makes the suspension system judge and output the optimal damping value in advance according to the driver's driving habits to improve the comfort of the vehicle. When the vehicle encounters bumpy or pothole-prone road conditions, the suspension system adjusts the length of the first push rod 120 and the second push rod 130 extending out of the housing 110 in advance, thereby adjusting the posture height of the vehicle body and the height of the wheels, so that the wheels can completely or approximately fit the road surface, so that the vehicle can completely or approximately absorb the unevenness of the road surface, reduce the impact force on the vehicle, and improve the comfort of the vehicle. According to the vehicle of the utility model, it includes the above-mentioned suspension system.

[0102] Since the vehicle is provided with the above-mentioned suspension system, by setting the first push rod 120 and the second push rod 130, the driving structure 140 can respectively drive the first push rod 120 and the second push rod 130 to move, and the movement directions of the first push rod 120 and the second push rod 130 are opposite, which is beneficial to improving the response speed of the electromagnetic shock absorber 100. Compared with the shock absorber with a ball screw structure, the response speed of the electromagnetic shock absorber 100 of the present application can be doubled, and the first push rod 120 and the second push rod 130 have a small length and a strong lateral strength resistance, which is beneficial to improving the ability of the electromagnetic shock absorber 100 to resist lateral loads, and at the same time can reduce the space occupied by the electromagnetic shock absorber 100 in the length direction.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0104] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electromagnetic vibration absorber, characterized in that: include: case; A first push rod and a second push rod, wherein the first push rod and the second push rod are respectively movably disposed on the housing, one of the first push rod and the second push rod is suitable for being connected to the vehicle body, and the other is suitable for being connected to the wheel; A driving structure is used to drive the first push rod and the second push rod to move in opposite directions respectively, so as to adjust the length of the electromagnetic shock absorber.

2. The electromagnetic vibration absorber according to claim 1, characterized in that: The driving structure includes a driver, and the first push rod and the second push rod are driven to move by the same driver.

3. The electromagnetic vibration absorber according to claim 2, characterized in that: The driving structure further includes a transmission gear, which is connected to the driver to be driven to rotate by the driver. The first push rod and the second push rod are spaced apart and arranged on opposite sides of the transmission gear and are respectively meshed with the transmission gear.

4. The electromagnetic vibration absorber according to claim 3, characterized in that: The transmission gear has a gear tooth portion, and the first push rod and the second push rod are both meshed with the gear tooth portion.

5. The electromagnetic vibration absorber according to claim 4, characterized in that: In the longitudinal section of the transmission gear, an orthographic projection of a portion of the gear tooth portion meshing with the first push rod and an orthographic projection of a portion of the gear tooth portion meshing with the second push rod at least partially overlap.

6. The electromagnetic vibration absorber according to claim 3, characterized in that: The transmission gear is a helical gear, the axial direction of the driver is parallel to the moving direction of the first push rod, the angle between the central axis of the transmission gear and the preset plane is α, 30°≤α≤40°, and the preset plane is perpendicular to the axial direction of the driver.

7. The electromagnetic vibration absorber according to claim 1, characterized in that: At least one of a rolling element, a lubricating element and a wear-resistant layer is respectively provided between the first push rod and the second push rod and the housing.

8. The electromagnetic vibration absorber according to any one of claims 1 to 7, characterized in that: The driving structure includes a driver and a transmission gear, the housing includes a first housing, a second housing and a third housing sequentially arranged along the length direction of the electromagnetic shock absorber, at least one of the first housing and the third housing is equipped with the driver, and the second housing is equipped with the transmission gear. One end of the first push rod extends out of an end of the first housing away from the third housing, and the other end extends into the third housing. Both the first housing and the third housing are slidably matched with the first push rod. One end of the second push rod extends out of an end of the third housing away from the first housing, and the other end extends into the first housing. Both the first housing and the third housing are slidably matched with the second push rod.

9. The electromagnetic vibration absorber according to claim 8, characterized in that: A first buffering and limiting structure is respectively provided on each of the first push rod and the second push rod, and the first buffering and limiting structure is suitable for contacting one end of the first shell and the third shell opposite to each other to limit the movement displacement of the first push rod or the second push rod.

10. The electromagnetic vibration absorber according to claim 9, characterized in that: The third housing is provided with a second buffering and limiting structure, and the second buffering and limiting structure is suitable for contacting the other end of the first push rod to limit the movement displacement of the first push rod; and / or, A third buffering and limiting structure is disposed on the first housing, and the third buffering and limiting structure is suitable for contacting the other end of the second push rod to limit the movement displacement of the second push rod.

11. A suspension system, characterized in that: It comprises the electromagnetic vibration absorber according to any one of claims 1-10.

12. A vehicle, characterized in that: Comprising a suspension system according to claim 11.

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