Vibration damping device, damper, vehicle and electric scooter

Abstract

The utility model provides a vibration attenuation device, a shock absorber, a vehicle and an electric scooter. The vibration attenuation device is used for bearing vibration energy generated by a movement assembly connected with the vibration attenuation device and converting the vibration energy into heat energy; the vibration attenuation device comprises a first vibration attenuation assembly and a second vibration attenuation assembly, the first vibration attenuation assembly comprises a plurality of vibration transmission blocks and a first damping fin, the multiple vibration transmission blocks are coaxially arranged and connected in the axial direction, the thickness of at least one vibration transmission block is gradually reduced from the edge to the center, and the first damping fin is arranged at the center of at least one vibration transmission block. Through the arrangement, a vibration acoustic black hole is formed in the center of the vibration transmission block, so that vibration energy at the edge can be transmitted to the center to be dissipated; due to the fact that the first damping fin is arranged in the center of the at least one vibration transmission block, vibration energy can be transmitted to the first damping fin, the vibration energy is converted into heat energy through the first damping fin, and vibration and abnormal sound caused by collision and impact are eliminated or reduced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle accessories, and in particular to a vibration attenuation device, a shock absorber, a vehicle and an electric scooter. Background Art

[0002] Scooters and other riding vehicles mainly rely on tires and suspension to absorb shock from road excitation. When going over potholes and bumps, they mainly rely on the springs inside the suspension shock absorbers as support and shock-absorbing elements.

[0003] Due to space limitations, cycling vehicles are often not designed with additional dampers, which results in the inability to slowly release the compressed kinetic energy of the spring when going over potholes and bumps, causing the shock absorber's piston and external guide sleeve to collide rapidly, resulting in vibration and abnormal noise. Utility Model Content

[0004] In view of this, the present application provides a vibration attenuation device, a shock absorber, a vehicle and an electric scooter, which can reduce vibration and abnormal noise caused by collision and impact.

[0005] Specifically, the following technical solutions are included:

[0006] In a first aspect, an embodiment of the present application provides a vibration damping device, which is used to receive vibration energy generated by a motion component connected thereto and convert the vibration energy into heat energy; the vibration damping device includes:

[0007] The first vibration attenuation assembly includes a plurality of vibration transmitting blocks and a first damping plate. The plurality of vibration transmitting blocks are coaxially arranged and axially connected. The thickness of at least one vibration transmitting block gradually decreases from the edge to the center, and the first damping plate is disposed at the center of at least one vibration transmitting block. The vibration transmitting block is configured to transfer vibration energy received at its edge to the first damping plate at the center, so that the first damping plate converts the vibration energy into heat energy.

[0008] In an optional embodiment, in the longitudinal section of the vibration attenuation device, the thickness of the vibration transmission block at least partially changes continuously in an arc shape, and the arc is a parabola or a power function curve.

[0009] In an optional embodiment, the maximum thicknesses of at least two of the vibration transmitting blocks are different.

[0010] In an optional embodiment, the vibration damping device further includes a second vibration damping component, wherein the second vibration damping component is connected to one end of the first vibration damping component in the axial direction;

[0011] The second vibration attenuation component includes a plurality of resonance plates and a second damping plate. The plurality of resonance plates are spaced apart in the axial direction, and an edge area of a surface of one side in the thickness direction of at least one resonance plate is covered with the second damping plate.

[0012] In an optional embodiment, the second vibration damping assembly further includes a base column, a first base body, a second base body, and a plurality of resonant columns;

[0013] The first base and the second base are respectively located at two ends of the base column in the axial direction, and the first base is located on a side of the second base away from the first vibration damping component, and the second damping sheet is provided on one side surface of the second base in the thickness direction;

[0014] The multiple resonance plates are annular and protrude on the outer wall surface of the base column. The multiple resonance columns are protruded on the surface of the first base away from the second base. The ends of the multiple resonance columns away from the first base are connected to the second damping plate.

[0015] In an optional embodiment, at least two of the resonance pieces have different thicknesses; and / or the thickness of at least one of the resonance pieces is different from the thickness of the first substrate or the second substrate.

[0016] In an optional embodiment, at least two resonant columns have different cross-sectional dimensions.

[0017] In an optional embodiment, at least one of the resonance pieces includes a plurality of segments, and the plurality of segments are spaced apart and distributed around the central axis of the base column.

[0018] In an optional embodiment, at least two of the resonance plates have different numbers of slices.

[0019] In a second aspect, an embodiment of the present application provides a shock absorber, comprising the vibration damping device provided in any embodiment of the first aspect, and further comprising an outer tube, an elastic member, a piston rod, and a piston head;

[0020] The piston head is connected to the piston rod and is at least partially located in the inner cavity of the outer cylinder. The piston head is capable of moving relative to the outer cylinder along the axial direction of the outer cylinder. The piston head is provided with an inner hole. The first vibration damping component is at least partially installed in the inner hole and abuts against the inner wall of the piston head.

[0021] The elastic member is located in the inner cavity of the outer cylinder, and one end of the elastic member is in contact with the piston head.

[0022] In an optional embodiment, the inner hole is a stepped hole, and the shape and size of the portion of the first vibration damping component located in the inner hole are respectively adapted to the shape and size of the inner hole.

[0023] In an optional embodiment, the vibration damping device further includes a second vibration damping component, wherein the second vibration damping component is connected to one end of the first vibration damping component in the axial direction;

[0024] The second vibration attenuation assembly includes a plurality of resonance plates and a second damping plate, wherein the plurality of resonance plates are spaced apart in the axial direction, and an edge area of a surface of one side in the thickness direction of at least one resonance plate is covered with the second damping plate;

[0025] The second vibration damping component is located in the inner cavity of the outer cylinder and abuts against the end of the piston head.

[0026] In a third aspect, an embodiment of the present application provides a vehicle, comprising the vibration attenuation device provided by any embodiment of the first aspect.

[0027] In a fourth aspect, an embodiment of the present application provides an electric scooter, comprising the shock absorber provided by any embodiment of the second aspect, and the electric scooter further comprising:

[0028] forehead assembly;

[0029] a frame riser connected to the lower end of the forehead assembly;

[0030] A front wheel assembly and a front fork assembly, wherein the front fork assembly is connected to the frame seat tube and the front wheel assembly respectively;

[0031] a rear wheel assembly and a pedal assembly, wherein the pedal assembly is connected to the front fork assembly and the rear wheel assembly respectively, and the front wheel assembly and the rear wheel assembly are respectively located at two ends of the pedal assembly;

[0032] Wherein, the piston rod of the shock absorber is connected to the wheel axle of the rear wheel assembly, and the end of the shock absorber facing away from the piston rod is connected to the pedal assembly.

[0033] The beneficial effects of the technical solution provided by the embodiments of the present application include at least: by setting the thickness of at least one vibration transmission block to gradually decrease from the edge to the center, a vibration acoustic black hole is formed in the center of the vibration transmission block, which helps to transmit the vibration energy at the edge to the center for dissipation; since a first damping plate is provided at the center of at least one vibration transmission block, the vibration energy can be transmitted to the first damping plate, and the first damping plate is used to convert the vibration energy into heat energy, thereby eliminating or reducing vibrations and abnormal noises caused by collisions and impacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 A schematic structural diagram of a vibration damping device provided in an embodiment of the present application;

[0036] Figure 2 A perspective view of a first vibration damping assembly provided in an embodiment of the present application;

[0037] Figure 3 A partial longitudinal cross-sectional diagram of a vibration damping device provided in an embodiment of the present application;

[0038] Figure 4 A perspective view of a second vibration damping assembly provided in an embodiment of the present application;

[0039] Figure 5 A schematic structural diagram of a shock absorber provided in an embodiment of the present application;

[0040] Figure 6 A three-dimensional diagram of a shock absorber provided in an embodiment of the present application;

[0041] Figure 7 A schematic diagram of vibration energy transmission of a shock absorber provided in an embodiment of the present application;

[0042] Figure 8 Schematic diagram of vibration curves of a shock absorber in the prior art and a shock absorber provided in an embodiment of the present application;

[0043] Figure 9 Vibration simulation images of a shock absorber in the prior art and a shock absorber provided in an embodiment of the present application, wherein Figure (a) is a simulation image corresponding to the shock absorber in the prior art, and Figure (b) is a vibration simulation image of the shock absorber provided in an embodiment of the present application;

[0044] Figure 10 A schematic diagram of the structure of an electric scooter provided in an embodiment of the present application.

[0045] The reference numerals in the figures represent:

[0046] 1-vibration attenuation device; 11-first vibration attenuation assembly; 111-vibration transmission block; 1111-bump; 112-first damping plate; 12-second vibration attenuation assembly; 121-resonance plate; 1211-first resonant plate; 1212-second resonant plate; 1212a-segment; 1213-third resonant plate; 122-second damping plate; 123-threaded hole; 124-base column; 125-first base body; 126-second base body; 127-resonance column;

[0047] 2- shock absorber; 21- outer cylinder; 22- elastic member; 23- piston rod; 24- piston head; 25- locking nut; 26- guide sleeve; 27- shaft sleeve; 28- nylon gasket.

[0048] 31- forehead assembly; 32- frame seat tube; 33- front wheel assembly; 34- front fork assembly; 35- rear wheel assembly; 36- pedal assembly.

[0049] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0051] The directional nouns involved in the embodiments of this application, such as "upper", "lower", "side", etc., are generally expressed in the form of Figure 1 The relative relationships shown in the figure are used as a reference, and these directional terms are used only to more clearly describe the relationship between structures, not to describe absolute directions. When the product is placed in different postures, the direction may change, for example, "up" and "down" may be interchangeable.

[0052] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art.

[0053] In order to make the technical solutions and advantages of the present application clearer, the implementation methods of the present application will be described in further detail below with reference to the accompanying drawings.

[0054] like Figure 1As shown, an embodiment of the present application provides a vibration damping device 1, which is used to receive the vibration energy generated by the motion component connected thereto and convert the vibration energy into heat energy.

[0055] The vibration attenuation device 1 includes a first vibration attenuation component 11, which includes multiple vibration transmission blocks 111 and a first damping plate 112. The multiple vibration transmission blocks 111 are coaxially arranged and connected along the axial direction. The thickness of at least one vibration transmission block 111 gradually decreases from the edge to the center, and a first damping plate 112 is provided at the center of at least one vibration transmission block 111. The vibration transmission block 111 is used to transfer the vibration energy received by its own edge to the first damping plate 112 at the center, so that the first damping plate 112 converts the vibration energy into heat energy.

[0056] The vibration damping device 1 is suitable for use on vehicles, including but not limited to cars or scooters, scooters, balance bikes, two-wheeled vehicles, electric bicycles, and other riding vehicles. For example, the vibration damping device 1 is applied to an electric scooter.

[0057] For example, the plurality of vibration transmission blocks 111 are all rotating bodies, for example, the plurality of vibration transmission blocks 111 are roughly cylindrical in shape. The number of vibration transmission blocks 111 can be set according to actual needs, for example Figure 2 As shown, the first vibration damping assembly 11 includes nine vibration transmitting blocks 111 .

[0058] like Figure 1 As shown, the vertical direction is the axial direction of the vibration transmission block 111 and the first vibration attenuation component 11, and the thickness of the vibration transmission block 111 is the axial dimension of the vibration transmission block 111. The thickness of the vibration transmission block 111 gradually decreases from the edge to the center in the radial direction, and the thickness at the center of the vibration transmission block 111 tends to zero. The vibration energy at the edge of the vibration transmission block 111 can be transmitted to the center of the vibration transmission block 111 in the direction from thick to thin. This conduction is similar to a black hole. Therefore, the vibration attenuation device 1 provided in the embodiment of the present application is equivalent to creating a vibroacoustic black hole at the center of the vibration transmission block 111, which can transmit most of the vibration energy to the vibroacoustic black hole position and dissipate it.

[0059] First damping plate 112 is made of a viscoelastic material, such as rubber, polymer, or resin, and is capable of reducing noise and vibration. Vibration energy from the edge of vibration transmission block 111 is transmitted from thick to thin to the center of vibration transmission block 111, and further to first damping plate 112, where it is converted into heat and dissipated. Specifically, first damping plate 112 utilizes its viscous damping properties to generate friction and throttling resistance during flow, thereby converting vibration energy into heat and dissipating it, achieving the purpose of shock absorption.

[0060] The number of the first damping sheets 112 can be set according to actual needs, for example Figure 1 As shown, there are eight first damping plates 112 , and except for the uppermost vibration transmission block 111 , each vibration transmission block 111 is provided with a first damping plate 112 .

[0061] For example, Figure 1 or Figure 3 As shown, the upper end face of the vibration transmission block 111 is planar, and the first damping plate 112 is installed at the center of the upper end face of the vibration transmission block 111. For example, the first damping plate 112 can be installed on the upper end face of the vibration transmission block 111 by bonding, welding, etc. Optionally, there is a through hole at the center of the vibration transmission block 111, and the first damping plate 112 covers the through hole; the lower end face of the vibration transmission block 111 is planar and annular, ensuring sufficient contact area with the adjacent vibration transmission block 111 below, thereby ensuring the connection strength between the two adjacent vibration transmission blocks 111. Optionally, the two adjacent vibration transmission blocks 111 are connected by welding, bonding, etc.; starting from the inner edge of the lower end face of the vibration transmission block 111, the thickness of the vibration transmission block 111 gradually decreases radially from the edge to the center.

[0062] For example, the vibration damping device 1 is applied to the shock absorber 2 of an electric scooter, such as Figure 5 As shown, the shock absorber 2 includes an outer tube 21, an elastic member 22, a piston rod 23, a piston head 24, a locking nut 25, and a guide sleeve 26. The piston head 24 is connected to the piston rod 23 and is at least partially located within the inner cavity of the outer tube 21. The piston head 24 is capable of axial movement relative to the outer tube 21 along the outer tube 21. The piston head 24 defines an inner hole, and the first vibration damping assembly 11 is at least partially mounted within the inner hole and abuts against the inner wall of the piston head 24. The elastic member 22 is located within the inner cavity of the outer tube 21, with one end of the elastic member 22 abutting against the piston head 24. The guide sleeve 26 is located on the outer periphery of the piston rod 23 and connected to the end of the outer tube 21. The locking nut 25 is located on the outside of the outer tube 21. The locking nut 25 is threadedly connected to the outer tube 21 and is connected to the end of the guide sleeve 26 facing away from the outer tube 21. The piston rod 23 is capable of axial movement relative to the guide sleeve 26. Among them, the piston rod 23 is used to connect to the wheel axle of the rear wheel assembly 35 of the electric scooter, and the end of the outer tube 21 away from the piston rod 23 is also provided with a shaft sleeve 27 and a nylon gasket 28. The end of the outer tube 21 away from the piston rod 23 is used to connect to the pedal assembly 36 of the electric scooter.

[0063] The shock absorber in the prior art is not provided with a vibration attenuation device 1. The process of generating vibration and abnormal noise by the shock absorber in the prior art is as follows: when the riding vehicle passes over a speed bump or obstacle, the wheel drives the piston rod 23 to press upward, and the piston rod 23 moves upward along the axial direction of the guide sleeve 26, and drives the piston head 24 to compress the elastic part 22 upward, so that the upward kinetic energy of the wheel is converted into elastic potential energy of the elastic part 22 and stored; after passing through the speed bump, the wheel is suspended for a short time, and the elastic part 22 releases the elastic potential energy, pushing the piston head 24 and the piston rod 23 downward, and converting the elastic potential energy into kinetic energy; the piston head 24 collides with the upper end surface of the guide sleeve 26, and the kinetic energy is converted into vibration and noise, which propagates on the piston rod 23 and the outer cylinder 21, and is finally transmitted to the vehicle body and the wheel, generating vibration and abnormal noise felt by the driver.

[0064] After applying the vibration damping device 1 provided in the embodiment of the present application, Figure 7 As shown, the vibration energy is transmitted from the collision site to the piston head 24 through different positions, and is transmitted from the piston head 24 to the vibration attenuation device 1, and is transmitted to the first damping plate 112 through the vibration acoustic black hole of the first vibration attenuation component 11. Due to the presence of the vibration attenuation device 1, the vibration energy transmitted to the outer tube 21 and the piston rod 23 is greatly reduced, thereby reducing the overall vibration of the shock absorber 2 and reducing the vibration and noise of the entire vehicle.

[0065] The vibration attenuation device 1 provided in the embodiment of the present application forms a vibration acoustic black hole in the center of the vibration transmission block 111 by setting a plurality of vibration transmission blocks 111 whose thickness gradually decreases from the edge to the center, thereby helping to transmit the vibration energy at the edge to the center for dissipation; since a first damping plate 112 is provided at the center of at least one vibration transmission block 111, the vibration energy can be transmitted to the first damping plate 112, and the first damping plate 112 is used to convert the vibration energy into heat energy, thereby eliminating or reducing vibrations and abnormal noises caused by collisions and impacts.

[0066] In a further embodiment, in a longitudinal cross-section of the vibration damping device 1, the thickness of the vibration transmitting block 111 varies continuously in at least a portion of an arc, where the arc is a parabola or a power function curve. It should be noted that the longitudinal cross-section of the vibration damping device 1 is a cross-section obtained by intercepting the plane along the central axis of the vibration damping device 1.

[0067] like Figure 3 As shown, in the longitudinal section of the vibration attenuation device 1, starting from the inner edge of the lower end surface of the vibration transmission block 111, the lower surface of the vibration transmission block 111 gradually changes in an arc shape from the edge to the center, so that the edge of the vibration transmission block 111 is thick and the center is thin.

[0068] By setting the arc to a parabola or a power function curve, unidirectional, reflection-free propagation of the vibration wave is achieved, so that the vibration wave will not be reflected back to the incident position, forming multiple vibroacoustic black holes, ensuring that the vibration wave is transmitted in one direction from the edge of the vibration transmission block 111 to the thinnest part in the center, and then introduced into the first damping plate 112.

[0069] In one embodiment, the maximum thicknesses of at least two vibration transmitting blocks 111 are different.

[0070] By setting the maximum thickness of at least two vibration transmission blocks 111 to be different, the multiple vibration transmission blocks 111 have different resonance frequencies, which is conducive to eliminating vibrations of different frequencies and improving the vibration reduction and noise reduction effects.

[0071] For example, the plurality of vibration transmitting blocks 111 are divided into a plurality of groups, each group including at least one vibration transmitting block 111, and the thickness of the plurality of vibration transmitting blocks 111 gradually increases from the end away from the piston rod 23 to the end close to the piston rod 23. Figure 1 As shown, except for the topmost vibration-transmitting block 111, the remaining eight vibration-transmitting blocks 111 are grouped in pairs, with the thickness of the multiple groups of vibration-transmitting blocks 111 gradually increasing from top to bottom. This arrangement allows the vibration-transmitting blocks 111 below and near the collision site to have a greater thickness, creating a larger contact area with the collision site, thereby absorbing more vibration energy and transmitting it to the vibroacoustic black hole where it is dissipated, thereby improving the vibration and noise reduction effects.

[0072] In one embodiment, the vibration damping device 1 further includes a second vibration damping assembly 12, which is connected to one axial end of the first vibration damping assembly 11. The second vibration damping assembly 12 includes a plurality of resonant plates 121 and a second damping plate 122. The plurality of resonant plates 121 are spaced apart in the axial direction, and an edge region of a side surface of at least one resonant plate 121 in the thickness direction is covered with a second damping plate 122.

[0073] like Figure 1 As shown, the second vibration damping assembly 12 is located at the upper end of the first vibration damping assembly 11. For example, the first vibration damping assembly 11 and the second vibration damping assembly 12 are coaxially arranged, a threaded hole 123 is provided at the lower end of the second vibration damping assembly 12, and a protrusion 1111 is protruded from the vibration transmitting block 111 at the upper end of the first vibration damping assembly 11, and the protrusion 1111 is provided with an external thread. The first vibration damping assembly 11 and the second vibration damping assembly 12 are connected by the threaded fit between the protrusion 1111 and the threaded hole 123.

[0074] Specifically, the plurality of resonant plates 121 are all sheet-shaped and spaced apart from one another. The second damping plate 122 is attached to the surface of the resonant plates 121. For example, the second damping plate 122 is attached to the side of the resonant plate 121 facing away from the first vibration attenuation assembly 11. The second damping plate 122 is annular or arc-shaped and is located at the edge of the resonant plate 121 away from the central axis. The second damping plate 122 can be flush with the edge of the resonant plate 121 or can be recessed relative to the edge of the resonant plate 121, i.e., there is a gap between the second damping plate 122 and the edge of the resonant plate 121.

[0075] The number of the resonance plates 121 and the second damping plates 122 can be set according to actual needs, for example Figure 1 and Figure 4 As shown, the second vibration attenuation component 12 includes a first resonance piece 1211 , a second resonance piece 1212 and a third resonance piece 1213 , and the upper surfaces of the first resonance piece 1211 , the second resonance piece 1212 and the third resonance piece 1213 are all provided with a second damping sheet 122 .

[0076] Exemplarily, the cross-sectional dimension of one end of the second vibration damping component 12 for connection to the first vibration damping component 11 is larger than the dimension of one end of the first vibration damping component 11 for connection to the second vibration damping component 12, so that the end of the second vibration damping component 12 close to the first vibration damping component 11 abuts against the end of the piston head 24 of the shock absorber 2, and also enables the vibration energy to propagate from the central area of the second vibration damping component 12 to the edge area.

[0077] Second damping plate 122 is made of a viscoelastic material, such as rubber, polymer, or resin, and is capable of reducing noise and vibration. Specifically, second damping plate 122 utilizes its viscous damping properties to generate friction and throttling resistance during flow, thereby converting vibration energy into heat and dissipating it, achieving the purpose of shock absorption.

[0078] By setting up the second vibration attenuation component 12, the vibration energy can be transmitted from the first vibration attenuation component 11 to the second vibration attenuation component 12, and further propagated from the central area of the second vibration attenuation component 12 to the edge area. Since the edge of the resonance plate 121 is the position of the maximum vibration, and the edge area of the one side surface of at least one resonance plate 121 in the thickness direction is covered with the second damping plate 122, the vibration energy can be converted into heat energy at the second damping plate 122, completing the vibration conduction and attenuation process.

[0079] Furthermore, the second vibration damping assembly 12 further includes a base column 124 , a first base body 125 , a second base body 126 and a plurality of resonant columns 127 .

[0080] The first base 125 and the second base 126 are respectively located at the two ends of the base column 124 in the axial direction, and the first base 125 is located on the side of the second base 126 away from the first vibration attenuation component 11. The second damping plate 122 is provided on one side surface of the second base 126 in the thickness direction.

[0081] The plurality of resonant plates 121 are annular and protrude from the outer wall of the base column 124 . The plurality of resonant columns 127 protrude from the surface of the first base 125 away from the second base 126 . The ends of the plurality of resonant columns 127 away from the first base 125 are connected to the second damping plate 122 .

[0082] Exemplarily, the second damping plate 122 for connecting to the resonant column 127 is provided with a plurality of inner holes, and the ends of the plurality of resonant columns 127 are inserted into the inner holes and bonded to the second damping plate 122 .

[0083] The number and height of the resonance columns 127 can be set according to actual needs. In the embodiment of the present application, fourteen resonance columns 127 are used as an example for description.

[0084] A plurality of resonance pieces 121 are located between the first base 125 and the second base 126, and the resonance pieces 121 are continuously or discontinuously arranged around the outer wall of the base column 124. Figure 1 As shown, the edges of the plurality of resonance pieces 121 are flush with the edges of the first base 125 and the second base 126 .

[0085] Vibration energy transmitted from the first vibration damping assembly 11 is transferred sequentially through the second base 126, the base column 124, and the first base 125 to the resonant column 127, achieving vibration reduction at the resonant column 127. The locations of the second vibration damping assembly 12 experiencing the greatest vibration include the second base 126, the edge of the resonant plate 121, and the upper end of the resonant column 127. By installing the second damping plate 122 at these locations, the vibration energy is converted into heat energy at the second damping plate 122, thereby completing the vibration transmission and attenuation process.

[0086] In a further embodiment, at least two resonance pieces 121 have different thicknesses; and / or, the thickness of at least one resonance piece 121 is different from the thickness of the first substrate 125 or the second substrate 126. For example, Figure 1 or Figure 4 As shown, the thickness of the first resonance piece 1211 is different from the thickness of the second base 126 , and the first resonance piece 1211 and the second base 126 have different resonance frequencies.

[0087] This arrangement allows the plurality of resonance pieces 121 to have different resonance frequencies, or allows the resonance piece 121 and the first base 125 or the second base 126 to have different resonance frequencies, thereby facilitating elimination of vibrations of different frequencies and improving vibration reduction and noise reduction effects.

[0088] In one embodiment, the cross-sectional dimensions of at least two resonant columns 127 are different. It is understood that the cross-sectional dimensions of the resonant column 127 are the cross-sectional dimensions obtained by cutting the resonant column 127 with a plane perpendicular to the axial direction of the vibration damping device 1 .

[0089] Resonance columns 127 with different cross-sectional dimensions have different resonance frequencies. By setting at least two resonance columns 127 with different cross-sectional dimensions, the multiple resonance columns 127 have different resonance frequencies, which is conducive to eliminating vibrations of different frequencies and improving the vibration reduction and noise reduction effects.

[0090] For example, the plurality of resonant pillars 127 are cylindrical, and at least two resonant pillars 127 have different diameters. For example, there are fourteen resonant pillars 127, each with a different diameter. The first substrate 125 and the fourteen resonant pillars 127, each with a different diameter, collectively produce fifteen different resonant frequencies, effectively eliminating vibration. Furthermore, by adjusting the thickness of the first substrate 125 and the diameters and heights of the fourteen resonant pillars 127, the specific values of the fifteen resonant frequencies can be adjusted.

[0091] In one embodiment, the at least one resonant sheet 121 includes a plurality of segments 1212 a , and the plurality of segments 1212 a are spaced apart and distributed around the central axis of the base column 124 .

[0092] In this embodiment, at least one resonance piece 121 is intermittently provided on the outer wall of the base column 124 , and has a different resonance frequency from the resonance piece 121 of the same thickness and continuously distributed on the outer wall of the base column 124 .

[0093] With this arrangement, the resonant frequency of the resonance piece 121 can be adjusted by adjusting the number of the segments 1212 a of the resonance piece 121 , thereby eliminating vibrations of a specific frequency.

[0094] Furthermore, at least two resonance pieces 121 have different numbers of segments 1212 a.

[0095] For example Figure 4As shown, the first resonant piece 1211 is continuously distributed on the outer wall surface of the base column 124, the second resonant piece 1212 includes two segments 1212a, and the third resonant piece 1213 includes four segments 1212a. The resonant frequencies of the first resonant piece 1211, the second resonant piece 1212, and the third resonant piece 1213 are different. The fourteen resonant columns 127 with different diameters, the first base 125, the second base 126, the first resonant piece 1211, the second resonant piece 1212, and the third resonant piece 1213 form a total of nineteen different resonant frequencies, which can fully eliminate vibration and absorb and convert vibration energy.

[0096] In this embodiment, by arranging at least two resonance pieces 121 with different numbers of segments 1212a, the multiple resonance pieces 121 have different resonance frequencies, which helps to eliminate vibrations of different frequencies and improve the vibration reduction and noise reduction effects.

[0097] In a specific embodiment, the vibration energy transmission path of the vibration attenuation device 1 is: Figure 7 As shown, vibration energy is transmitted from the collision site through different locations to the piston head 24, and then from the piston head 24 to the vibration attenuation device 1, and then transmitted to the first damping plate 112 via the vibroacoustic black hole of the first vibration attenuation component 11. The vibration energy is also transmitted from the first vibration attenuation component 11 to the second vibration attenuation component 12, and further transmitted to the second base 126, multiple resonant plates 121, and the second damping plate 122 at the resonant column 127. The layered absorption of vibration energy by the vibroacoustic black hole of the first vibration attenuation component 11 and the absorption of vibration energy by the second vibration attenuation component 12 absorb the vast majority of the vibration energy generated by the collision, greatly reducing the vibration energy transmitted to the outer tube 21 and piston rod 23, thereby reducing the overall vibration of the shock absorber 2 and the vibration and noise of the entire vehicle.

[0098] like Figure 5 and Figure 6 As shown, an embodiment of the present application further provides a shock absorber 2 , which includes the vibration attenuation device 1 provided in any of the above embodiments, and further includes an outer tube 21 , an elastic member 22 , a piston rod 23 and a piston head 24 .

[0099] The piston head 24 is connected to the piston rod 23 and is at least partially located within the inner cavity of the outer cylinder 21. The piston head 24 is movable relative to the outer cylinder 21 along the axial direction of the outer cylinder 21. The piston head 24 defines an inner hole. The first vibration damping assembly 11 is at least partially installed in the inner hole and abuts the inner wall of the piston head 24. The elastic member 22 is located within the inner cavity of the outer cylinder 21, and one end of the elastic member 22 abuts the piston head 24.

[0100] The vibration damping device 1 also includes a locking nut 25 and a guide sleeve 26. The guide sleeve 26 is located on the outer periphery of the piston rod 23 and is connected to the end of the outer cylinder 21. The locking nut 25 is located outside the outer cylinder 21 and is threadedly connected to the outer cylinder 21 and is connected to the end of the guide sleeve 26 facing away from the outer cylinder 21. The piston rod 23 is capable of axial movement relative to the guide sleeve 26. When the shock absorber 2 is used in an electric scooter, the piston rod 23 is used to connect to the wheel axle of the rear wheel assembly 35 of the electric scooter. The end of the outer cylinder 21 facing away from the piston rod 23 is also provided with a sleeve 27 and a nylon washer 28. The sleeve 27 and nylon washer 28 are used to connect to the pedal assembly 36 of the electric scooter.

[0101] The shock absorber in the prior art is not provided with a vibration attenuation device 1. The process of generating vibration and abnormal noise by the shock absorber in the prior art is as follows: when the riding vehicle passes over a speed bump or obstacle, the wheel drives the piston rod 23 to press upward, and the piston rod 23 moves upward along the axial direction of the guide sleeve 26, and drives the piston head 24 to compress the elastic part 22 upward, so that the upward kinetic energy of the wheel is converted into elastic potential energy of the elastic part 22 and stored; after passing through the speed bump, the wheel is suspended for a short time, and the elastic part 22 releases the elastic potential energy, pushing the piston head 24 and the piston rod 23 downward, and converting the elastic potential energy into kinetic energy; the piston head 24 collides with the upper end surface of the guide sleeve 26, and the kinetic energy is converted into vibration and noise, which propagates on the piston rod 23 and the outer cylinder 21, and is finally transmitted to the vehicle body and the wheel, generating vibration and abnormal noise felt by the driver.

[0102] After applying the vibration damping device 1 provided in the embodiment of the present application, Figure 7 As shown, the vibration energy is transmitted from the collision site to the piston head 24 through different positions, and is transmitted from the piston head 24 to the vibration attenuation device 1, and is transmitted to the first damping plate 112 through the vibration acoustic black hole of the first vibration attenuation component 11. Due to the presence of the vibration attenuation device 1, the vibration energy transmitted to the outer tube 21 and the piston rod 23 is greatly reduced, thereby reducing the overall vibration of the shock absorber 2 and reducing the vibration and noise of the entire vehicle.

[0103] Furthermore, the inner hole is a stepped hole, and the shape and size of the portion of the first vibration damping component 11 located in the inner hole are respectively adapted to the shape and size of the inner hole.

[0104] Through this setting, not only is the first vibration attenuation component 11 limited, but the outer wall of the energy harvester is also fully in contact with the inner wall of the piston head 24, so that the vibration attenuation device 1 can fully absorb the vibration energy transmitted from the piston head 24, so that the vibration energy can be absorbed and dissipated layer by layer through the vibration acoustic black hole of the first vibration attenuation component 11.

[0105] In one embodiment, the vibration damping device 1 further includes a second vibration damping assembly 12, which is connected to one axial end of the first vibration damping assembly 11. The second vibration damping assembly 12 includes a plurality of resonant plates 121 and a second damping plate 122. The plurality of resonant plates 121 are spaced apart along the axial direction, and the edge region of one side surface of at least one resonant plate 121 in the thickness direction is covered with the second damping plate 122. The second vibration damping assembly 12 is located within the inner cavity of the outer cylinder 21 and abuts against the end of the piston head 24.

[0106] For example, the first vibration damping assembly 11 and the second vibration damping assembly 12 are coaxially arranged. A threaded hole 123 is formed at the lower end of the second vibration damping assembly 12. A bump 1111 is formed on the vibration transmitting block 111 at the upper end of the first vibration damping assembly 11. The bump 1111 has an external thread. The first vibration damping assembly 11 and the second vibration damping assembly 12 are connected by the threaded fit between the bump 1111 and the threaded hole 123. During the tightening process, the second vibration damping assembly 12 not only achieves a secure connection with the first vibration damping assembly 11, but also contacts and connects with the piston head 24, thereby attenuating the vibration energy transmitted from the end of the piston head 24.

[0107] In this embodiment, by providing a second vibration attenuation component 12, the vibration energy can be transmitted from the first vibration attenuation component 11 to the second vibration attenuation component 12, and further propagated from the central area of the second vibration attenuation component 12 to the edge area. Since the edge of the resonance plate 121 is the position of the maximum vibration, and the edge area of the one side surface in the thickness direction of at least one resonance plate 121 is covered with a second damping plate 122, the vibration energy can be converted into heat energy at the second damping plate 122, completing the vibration conduction and attenuation process; at the same time, the second vibration attenuation component 12 is in contact with the piston head 24, which can attenuate the vibration energy transmitted from the end of the piston head 24, thereby improving the shock absorption and noise reduction effect.

[0108] Optionally, the second vibration damping assembly 12 further includes a base column 124, a first substrate 125, a second substrate 126, and a plurality of resonant columns 127. The first substrate 125 and the second substrate 126 are respectively located at the two ends of the base column 124 in the axial direction, and the first substrate 125 is located on the side of the second substrate 126 facing away from the first vibration damping assembly 11. A second damping plate 122 is provided on one side of the second substrate 126 in the thickness direction. The plurality of resonant plates 121 are annular and protrude from the outer wall surface of the base column 124. The plurality of resonant columns 127 protrude from the surface of the first substrate 125 facing away from the second substrate 126. The ends of the plurality of resonant columns 127 facing away from the first substrate 125 are connected to the second damping plate 122.

[0109] Optionally, at least two resonance pieces 121 have different thicknesses; and / or the thickness of at least one resonance piece 121 is different from the thickness of the first base 125 or the second base 126 .

[0110] Optionally, at least two resonant columns 127 have different cross-sectional dimensions.

[0111] Optionally, the at least one resonance piece 121 includes a plurality of segments 1212 a , and the plurality of segments 1212 a are spaced apart and distributed around the central axis of the base column 124 .

[0112] Optionally, at least two resonance pieces 121 have different numbers of segments 1212 a.

[0113] In a specific embodiment, the vibration energy transmission path of the shock absorber 2 is: Figure 7 As shown, vibration energy is transmitted from the collision site through different locations to the piston head 24, and then from the piston head 24 to the vibration attenuation device 1, and then transmitted to the first damping plate 112 via the vibroacoustic black hole of the first vibration attenuation component 11. The vibration energy is also transmitted from the first vibration attenuation component 11 to the second vibration attenuation component 12, and further transmitted to the second base 126, multiple resonant plates 121, and the second damping plate 122 at the resonant column 127. The layered absorption of vibration energy by the vibroacoustic black hole of the first vibration attenuation component 11 and the absorption of vibration energy by the second vibration attenuation component 12 absorb the vast majority of the vibration energy generated by the collision, greatly reducing the vibration energy transmitted to the outer tube 21 and piston rod 23, thereby reducing the overall vibration of the shock absorber 2 and the vibration and noise of the entire vehicle.

[0114] In order to clarify the vibration reduction and noise reduction effects of the vibration attenuation device 1 and the shock absorber 2 provided in the embodiment of the present application, the applicant conducted vibration simulation on the shock absorber in the prior art that is not equipped with the vibration attenuation device 1 and the shock absorber 2 provided in the embodiment of the present application.

[0115] Please refer to Figure 8 The vibration curve of the shock absorber 2 provided in the embodiment of the present application is lower than that of shock absorbers in the prior art at most frequencies. Calculations show that the RMS vibration velocity between 25Hz and 10,000Hz is reduced from 15.12mm / s to 4.69mm / s, a reduction of approximately 69%. At individual frequencies, such as 1,350Hz, the vibration acceleration is reduced by 39.4dB, achieving a significant reduction in vibration and thus significantly reducing radiated noise. Taking the vibration at the mid-high frequency of 6,750Hz as an example, the vibration is reduced from 35.1dB to 10.5dB, a total reduction of 24.6dB.

[0116] Figure 9Vibration simulation images of the shock absorber in the prior art and the shock absorber 2 provided in the embodiment of the present application at a frequency of 6750 Hz are shown. It can be seen that the maximum vibration speed of the shock absorber 2 provided in the embodiment of the present application is reduced from 108.1 mm / s to 25.5 mm / s, a reduction of about 76%, compared with the shock absorber in the prior art; the vibration energy is guided to the vibration attenuation device 1 and dissipated, reducing the vibration energy transmitted to the outer tube 2121 and the piston rod 2323, making it difficult for the vibration to be transmitted to the vehicle body and wheels.

[0117] An embodiment of the present application further provides a vehicle, comprising the vibration attenuation device 1 provided in any of the above embodiments.

[0118] Vehicles include but are not limited to cars or scooters, scooters, balance bikes, two-wheeled vehicles, electric bicycles and other cycling vehicles.

[0119] like Figure 10 As shown, an embodiment of the present application further provides an electric scooter, which includes the shock absorber 2 provided in any of the above embodiments, and also includes a forehead assembly 31, a frame stem 32, a front wheel assembly 33, a front fork assembly 34, a rear wheel assembly 35 and a pedal assembly 36.

[0120] like Figure 10 As shown, the frame stem 32 is connected to the lower end of the forehead assembly 31; the front fork assembly 34 is located between the frame stem 32 and the front wheel assembly 33, and the front fork assembly 34 is respectively connected to the frame stem 32 and the front wheel assembly 33; the pedal assembly 36 is respectively connected to the front fork assembly 34 and the rear wheel assembly 35, and the front wheel assembly 33 and the rear wheel assembly 35 are respectively located at both ends of the pedal assembly 36.

[0121] The piston rod 23 of the shock absorber 2 is connected to the wheel axle of the rear wheel assembly 35, and the end of the shock absorber 2 facing away from the piston rod 23 is connected to the pedal assembly 36. Specifically, the end of the outer tube 21 facing away from the piston rod 23 is further provided with a shaft sleeve 27 and a nylon washer 28, which are used to connect to the pedal assembly 36.

[0122] Optionally, there are two shock absorbers 2 , which are respectively located on both sides of the wheel axle of the rear wheel assembly 35 .

[0123] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0124] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only.

[0125] Those skilled in the art will appreciate that the above embodiments may be implemented independently, or the above embodiments may be freely combined to create new embodiments.

[0126] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A vibration damping device (1), characterized in that: The vibration damping device is used to receive the vibration energy generated by the motion component connected thereto and convert the vibration energy into heat energy; The vibration damping device (1) comprises: A first vibration attenuation component (11) comprises a plurality of vibration transmission blocks (111) and a first damping plate (112), wherein the plurality of vibration transmission blocks (111) are coaxially arranged and axially connected, the thickness of at least one of the vibration transmission blocks (111) gradually decreases from the edge to the center, and the first damping plate (112) is arranged at the center of at least one of the vibration transmission blocks (111); wherein the vibration transmission block (111) is used to transmit the vibration energy received at its edge to the first damping plate (112) at the center, so that the first damping plate (112) converts the vibration energy into heat energy.

2. The vibration damping device (1) according to claim 1, characterized in that In the longitudinal section of the vibration damping device (1), the thickness of at least one of the vibration transmitting blocks (111) at least partially changes continuously in an arc shape, and the arc is a parabola or a power function curve.

3. The vibration damping device (1) according to claim 1, characterized in that The maximum thicknesses of at least two of the vibration transmitting blocks (111) are different.

4. The vibration damping device (1) according to claim 1, characterized in that The vibration damping device (1) further comprises a second vibration damping component (12), wherein the second vibration damping component (12) is connected to one end of the first vibration damping component (11) in the axial direction; The second vibration attenuation component (12) comprises a plurality of resonance plates (121) and a second damping plate (122), wherein the plurality of resonance plates (121) are arranged at intervals along the axial direction, and an edge area of a side surface of at least one resonance plate (121) in a thickness direction is covered with the second damping plate (122).

5. The vibration damping device (1) according to claim 4, characterized in that The second vibration damping component (12) further includes a base column (124), a first base body (125), a second base body (126) and a plurality of resonant columns (127); The first base (125) and the second base (126) are respectively located at two ends of the base column (124) in the axial direction, and the first base (125) is located on a side of the second base (126) away from the first vibration damping component (11), and the second damping plate (122) is provided on one side surface of the second base (126) in the thickness direction; The plurality of resonance plates (121) are annular and protrude on the outer wall surface of the base column (124); the plurality of resonance columns (127) are protruded on the surface of the first base (125) away from the second base (126); and one end of the plurality of resonance columns (127) away from the first base (125) is connected to the second damping plate (122).

6. The vibration damping device (1) according to claim 5, characterized in that The thicknesses of at least two of the resonance pieces (121) are different; and / or the thickness of at least one of the resonance pieces (121) is different from the thickness of the first substrate (125) or the second substrate (126).

7. The vibration damping device (1) according to claim 5, characterized in that At least two resonant columns (127) have different cross-sectional dimensions.

8. The vibration damping device (1) according to claim 5, characterized in that At least one of the resonance pieces (121) includes a plurality of segments (1212a), and the plurality of segments (1212a) are spaced and distributed around the central axis of the base column (124).

9. The vibration damping device (1) according to claim 8, characterized in that At least two of the resonance pieces (121) have different numbers of the segments (1212a).

10. A shock absorber (2), characterized in that: The shock absorber (2) comprises the vibration damping device (1) according to any one of claims 1 to 9, and further comprises an outer cylinder (21), an elastic member (22), a piston rod (23) and a piston head (24); The piston head (24) is connected to the piston rod (23) and the piston head (24) is at least partially located in the inner cavity of the outer cylinder (21). The piston head (24) can move relative to the outer cylinder (21) along the axial direction of the outer cylinder (21). The piston head (24) is provided with an inner hole. The first vibration damping component (11) is at least partially installed in the inner hole and abuts against the inner wall of the piston head (24); The elastic member (22) is located in the inner cavity of the outer cylinder (21), and one end of the elastic member (22) abuts against the piston head (24).

11. The shock absorber (2) according to claim 10, characterized in that The inner hole is a stepped hole, and the shape and size of the portion of the first vibration damping component (11) located in the inner hole are respectively adapted to the shape and size of the inner hole.

12. The shock absorber (2) according to claim 10, characterized in that The vibration damping device (1) is the vibration damping device (1) according to any one of claims 4 to 9; The second vibration damping component (12) is located in the inner cavity of the outer cylinder (21) and abuts against the end of the piston head (24).

13. A vehicle, characterized in that: The vehicle includes the vibration damping device (1) according to any one of claims 1 to 9.

14. An electric scooter, characterized in that: The electric scooter comprises the shock absorber (2) according to any one of claims 10 to 12, and further comprises: forehead assembly (31); A frame riser (32) connected to the lower end of the forehead assembly (31); A front wheel assembly (33) and a front fork assembly (34), wherein the front fork assembly (34) is connected to the frame riser (32) and the front wheel assembly (33) respectively; a rear wheel assembly (35) and a pedal assembly (36), wherein the pedal assembly (36) is connected to the front fork assembly (34) and the rear wheel assembly (35) respectively, and the front wheel assembly (33) and the rear wheel assembly (35) are respectively located at two ends of the pedal assembly (36); The piston rod (23) of the shock absorber (2) is connected to the wheel axle of the rear wheel assembly (35), and the end of the shock absorber (2) facing away from the piston rod (23) is connected to the pedal assembly (36).

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