Vibration absorber and vehicle

Abstract

The utility model relates to a vibration absorber and a vehicle, the vibration absorber is used for attenuating the vibration of a transmission shaft, and the vibration absorber comprises a first mass block, a second mass block, an elastic piece and a connecting disc used for connecting the transmission shaft; the elastic piece comprises a first elastic part and a plurality of second elastic parts arranged at intervals in the circumferential direction of the connecting disc. The first elastic part wraps the periphery of the first mass block and is connected with the inner circumference of the connecting disc, so that the inner circumference of the connecting disc is connected with the first mass block through the first elastic part; the second elastic part is arranged between the inner periphery of the second mass block and the outer periphery of the connecting disc, and the outer periphery of the connecting disc is connected with the second mass block through the second elastic part. Bending vibration and torsional vibration of the transmission shaft can be attenuated at the same time, so that vibration of the transmission shaft is greatly eliminated, kinetic energy loss is reduced, the transmission shaft can transmit more kinetic energy, and the working efficiency of the transmission shaft is improved.

Description

Technical Field

[0001] This utility model relates to an automotive accessory, and more particularly to a vibration absorber and a vehicle. Background Technology

[0002] The driveshaft is an important component in a vehicle's drivetrain that transmits power. Together with the gearbox and drive axle, it transmits the engine's power to the wheels, enabling the vehicle to generate driving force.

[0003] While current drive shafts can eliminate torsional vibrations when transmitting kinetic energy, vibration dampers still cause the kinetic energy transmitted by the drive shaft to be consumed by vibration. Utility Model Content

[0004] This utility model provides a vibration absorber and a vehicle to solve the technical problem in the related art that the kinetic energy transmitted by the drive shaft is still consumed by vibration.

[0005] To address the aforementioned problems, in a first aspect, this utility model discloses a vibration absorber for attenuating the vibration of a drive shaft, comprising: a first mass block, a second mass block, an elastic element, and a connecting disc for connecting the drive shaft; the elastic element includes a first elastic portion and a plurality of second elastic portions spaced circumferentially along the connecting disc;

[0006] The first elastic part wraps around the outer periphery of the first mass block and is connected to the inner periphery of the connecting disk;

[0007] The second elastic part is connected between the inner periphery of the second mass block and the outer periphery of the connecting disk.

[0008] Optionally, the connecting disk is provided with a plurality of connecting holes, which are distributed at intervals along the circumference of the connecting disk and are radially open along the connecting disk;

[0009] The elastic element further includes a connecting portion, which is respectively disposed corresponding to the second elastic portion and the connecting hole. The connecting portion passes through the corresponding connecting hole, one end of the connecting portion is connected to the first elastic portion, and the other end of the connecting portion is connected to the corresponding second elastic portion.

[0010] Optionally, a plurality of limiting grooves are provided on the outer periphery of the connecting disk, and the openings of the limiting grooves face the inner periphery of the second mass block;

[0011] The second elastic part is disposed corresponding to the limiting groove, and at least a portion of the second elastic part is embedded in the corresponding limiting groove.

[0012] Optionally, the vibration absorber further includes a limiting plate, wherein the axis of the inscribed cylindrical surface of the limiting plate coincides with the axis of the inscribed cylindrical surface of the second elastic part;

[0013] Along the radial direction of the connecting disk, the limiting plate is disposed between the connecting disk and the second mass block;

[0014] The limiting plate is arranged between at least two adjacent second elastic portions.

[0015] Optionally, the connecting disc includes a plurality of protrusions, and a limiting groove is formed between two adjacent protrusions;

[0016] At least a portion of the second elastic part is embedded in the limiting groove;

[0017] Along the radial direction of the connecting disc, the limiting plate is gap-fitted between the protrusion and the inner circumference of the second mass block.

[0018] Optionally, the limiting plate has a through hole that extends radially along the connecting disc.

[0019] Optionally, the first elastic portion is provided with annular grooves on opposite sides of the connecting disc in the axial direction.

[0020] Optionally, along the axial direction of the connecting disk, the surface of the connecting disk protrudes beyond the surfaces of the first elastic portion and the first mass block.

[0021] Optionally, the connecting plate is provided with at least one set of mounting units, each set of mounting units including a first mounting hole, a second mounting hole, a third mounting hole and a fourth mounting hole arranged at uniform intervals along the circumference of the connecting plate;

[0022] The first mounting hole, the second mounting hole, the third mounting hole, and the fourth mounting hole all extend through the axial direction of the connecting plate.

[0023] Secondly, this utility model also discloses a vehicle, including a drive shaft and the aforementioned vibration absorber;

[0024] The connecting plate of the vibration absorber is connected to the drive shaft.

[0025] The embodiments of this utility model have the following advantages:

[0026] In this embodiment of the invention, the connecting disc is connected to the drive shaft. Since the first elastic portion wraps around the outer periphery of the first mass block and connects to the inner periphery of the connecting disc, the inner periphery of the connecting disc is connected to the first mass block through the first elastic portion. Thus, the connecting disc can transmit the bending vibration of the drive shaft to the first mass block, thereby attenuating the bending vibration of the drive shaft. Since the second elastic portion connects between the inner periphery of the second mass block and the outer periphery of the connecting disc, the connecting disc can connect to the second mass block through the second elastic portion. Thus, the connecting disc can transmit the torsional vibration of the drive shaft to the second mass block, thereby attenuating the torsional vibration of the drive shaft. In this embodiment of the invention, both bending and torsional vibrations of the drive shaft can be attenuated simultaneously, greatly eliminating the vibration of the drive shaft, reducing kinetic energy loss, allowing the drive shaft to transmit more kinetic energy, and improving the working efficiency of the drive shaft. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of a vibration absorber according to this utility model;

[0029] Figure 2 This is a cross-sectional structural diagram of a vibration absorber according to this utility model;

[0030] Figure 3 This is a structural schematic diagram of an elastic element according to this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of a connecting disc according to this utility model;

[0032] Figure 5 This is a structural schematic diagram of a limiting plate according to this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. First mass block; 2. Second mass block; 3. Elastic element; 31. First elastic part; 311. Annular groove; 32. Second elastic part; 33. Connecting part; 4. Connecting plate; 41. Connecting hole; 42. Limiting groove; 43. Protrusion; 44. Mounting unit; 441. First mounting hole; 442. Second mounting hole; 443. Third mounting hole; 444. Fourth mounting hole; 5. Limiting plate; 51. Through hole. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] The driveshaft is a component of a vehicle, and as an important part of the vehicle's transmission system, its main function is to transmit power from the engine to the wheels, thereby driving the vehicle forward. The driveshaft works in conjunction with three key components: the shaft tube, the telescopic sleeve, and the universal joint. Vibration of the driveshaft can be transmitted to other parts of the vehicle, affecting driver comfort; driveshaft vibration can also cause sudden shaking during driving, affecting the driver's control and increasing the risk of traffic accidents; vibration accelerates the wear of the driveshaft and its related components, leading to premature component failure; accelerated wear due to vibration increases the frequency and cost of vehicle maintenance; and driveshaft vibration affects the efficiency of power transmission, increasing energy loss.

[0037] This utility model discloses a vibration absorber that can be used to attenuate the vibration of a drive shaft, wherein, for example... Figure 1 and Figure 2 As shown, the vibration absorber includes: a first mass block 1, a second mass block 2, an elastic element 3, and a connecting disk 4 for connecting a drive shaft; the elastic element 3 includes a first elastic portion 31 and a plurality of second elastic portions 32 spaced circumferentially along the connecting disk 4; the first elastic portion 31 wraps around the outer periphery of the first mass block 1 and connects to the inner periphery of the connecting disk 4, so that the inner periphery of the connecting disk 4 is connected to the first mass block 1 through the first elastic portion 31, and the first elastic portion 31 and the first mass block 1 can be combined to form a torsional vibration damping system; the second elastic portion 32 is connected between the inner periphery of the second mass block 2 and the outer periphery of the connecting disk 4, so that the outer periphery of the connecting disk 4 is connected to the second mass block 2 through the second elastic portion 32, and the second elastic portion 32 and the second mass block 2 can be combined to form a bending vibration damping system.

[0038] In this embodiment of the invention, the connecting disc 4 is connected to the drive shaft. Since the first elastic part 31 wraps around the outer periphery of the first mass block 1 and connects to the inner periphery of the connecting disc 4, the inner periphery of the connecting disc 4 is connected to the first mass block 1 via the first elastic part 31. Thus, the connecting disc 4 can transmit the bending vibration of the drive shaft to the first mass block 1, thereby attenuating the bending vibration of the drive shaft. Since the second elastic part 32 is disposed between the inner periphery of the second mass block 2 and the outer periphery of the connecting disc 4, the connecting disc 4 can connect to the second mass block 2 via the second elastic part 32. Thus, the connecting disc 4 can transmit the torsional vibration of the drive shaft to the second mass block 2, thereby attenuating the torsional vibration of the drive shaft.

[0039] In this embodiment of the invention, both bending and torsional vibrations of the driveshaft can be attenuated simultaneously, significantly reducing driveshaft vibration and minimizing kinetic energy loss. This allows the driveshaft to transmit more kinetic energy, improving its efficiency and enabling the engine's kinetic energy to be effectively transferred to the wheels, thus enhancing the vehicle's fuel economy. Attenuating driveshaft vibration also reduces discomfort experienced by occupants, improving the riding experience. Furthermore, attenuating driveshaft vibration helps maintain vehicle stability and improves driving safety. It also reduces friction and impact, extending the service life of the driveshaft and related components. Finally, it reduces maintenance needs and lowers long-term maintenance costs. In summary, attenuating driveshaft vibration not only affects driving comfort and safety but also impacts vehicle maintenance costs and lifespan, making it a crucial measure for ensuring overall vehicle performance and reliability.

[0040] In this embodiment of the invention, the vibration absorber can be connected to the drive shaft via a connecting disc 4 to attenuate the vibration of the drive shaft. Specifically, the connecting disc 4 can be a circular ring structure. The inner circumference of the connecting disc 4 can be connected to the first mass block 1 via a first elastic part 31, so that the first elastic part 31 and the first mass block 1 can be combined to form a bending vibration attenuation system for attenuating the bending vibration of the drive shaft. The outer circumference of the connecting disc 4 can be connected to the second mass block 2 via a second elastic part 32, so that the second elastic part 32 and the second mass block 2 can be combined to form a torsional vibration attenuation system for attenuating the torsional vibration of the drive shaft.

[0041] Specifically, the elastic element 3 can be a rubber spring. The elastic element 3 includes a first elastic part 31 and a second elastic part 32. The first elastic part 31 and the second elastic part 32 can be integrally formed, or the first elastic part 31 and the second elastic part 32 can be spliced ​​and fixed, or the first elastic part 31 and the second elastic part 32 can be arranged independently.

[0042] Specifically, the first elastic part 31 can wrap around the first mass block 1. The first elastic part 31 can include an annular part, which can wrap around the circumference of the first mass block 1. The first elastic part 31 can be connected to the first mass block 1 through the inner circumference of the annular part and connected to the inner circumference of the connecting disk 4 through the outer circumference of the annular part. This allows the inner circumference of the connecting disk 4 to be connected to the first mass block 1 through the first elastic part 31. In this way, when the drive shaft undergoes bending vibration, the connecting disk 4 moves radially along the connecting disk 4. The first elastic part 31 moves radially along the connecting disk 4 with the connecting disk 4, and the first mass block 1 moves radially along the connecting disk 4 with the first elastic part 31. This allows the bending vibration of the drive shaft to be transmitted to the first mass block 1, thereby achieving attenuation of the bending vibration of the drive shaft.

[0043] In some embodiments, the first elastic part 31 may also have a wrapping part, which may wrap around the opposite sides of the first mass block 1 in the axial direction of the connecting disk 4.

[0044] Specifically, in this embodiment of the invention, the specific shape of the first mass block 1 is not limited; it can be a cylinder or a cube, etc. The first elastic part 31 can be spliced ​​and fixed to the first mass block 1, or the first elastic part 31 can be vulcanized together with the first mass block 1 through a rubber vulcanization process to achieve integral molding, etc. The first elastic part 31 and the connecting disc 4 can be glued or snapped together, etc.

[0045] For example, such as Figure 2 As shown, the first elastic part 31 is integrally formed with the first mass block 1. Since the first mass block 1 needs to be limited during processing, a corresponding positioning groove is formed on the first elastic part 31 after forming.

[0046] Specifically, the number of second elastic parts 32 can be two, three, four, five, six, etc., and this embodiment of the present invention does not impose a specific limitation. Multiple second elastic parts 32 can be evenly distributed along the circumference of the connecting disk 4. In this way, the outer periphery of the connecting disk 4 is connected to the second mass block 2 through the second elastic parts 32, which improves the reliability of the connection between the second elastic parts 32 and the second mass block 2, and ensures the stability of the rotation of the second mass block 2 driven by the second elastic parts 32. When the transmission shaft experiences torsional vibration, the connecting disk 4 rotates accordingly, the second elastic parts 32 rotate with the connecting disk 4, and the second mass block 2 rotates with the second elastic parts 32. The connecting disk 4, the second elastic parts 32, and the second mass block 2 all rotate around the axis of the connecting disk 4, allowing the torsional motion of the transmission shaft to be transmitted to the second mass block 2, thereby attenuating the torsional vibration of the transmission shaft.

[0047] Specifically, the second elastic part 32 and the second mass block 2 can be spliced ​​and fixed together, or they can be integrally molded by injection molding. The second elastic part 32 and the connecting plate 4 can be glued or snapped together.

[0048] Specifically, the second mass block 2 can be a ring-shaped component, the second mass block 2 is sleeved outside the connecting disk 4, and the axis of the second mass block 2 can coincide with the axis of the connecting disk 4.

[0049] In some optional embodiments of this utility model, the connecting disk 4 is provided with a plurality of connecting holes 41, which are distributed at intervals along the circumference of the connecting disk 4 and are radially connected; the elastic member 3 also includes a connecting part 33, which is respectively provided with the second elastic part 32 and the connecting hole 41, the connecting part 33 passes through the corresponding connecting hole 41, one end of the connecting part 33 is connected to the first elastic part 31, and the other end of the connecting part 33 is connected to the corresponding second elastic part 32.

[0050] In this embodiment of the invention, the first elastic part 31 and the second elastic part 32 can be connected into one body by the connecting part 33, so that the structure of the elastic element 3 is more stable and the overall stability and reliability of the vibration absorber can be improved.

[0051] In the utility model embodiment, the number of connecting holes 41, connecting parts 33 and second elastic parts 32 are the same. Multiple connecting holes 41 are evenly spaced along the circumference of the connecting disk 4, multiple connecting parts 33 are evenly spaced along the circumference of the connecting disk 4, and multiple second elastic parts 32 are evenly spaced along the circumference of the connecting disk 4.

[0052] Specifically, the shape of the connecting hole 41 is adapted to the shape of the connecting part 33. For example, if the connecting part 33 is a cylinder, the corresponding connecting hole 41 can be a circular hole; if the connecting part 33 is a prism, the corresponding connecting hole 41 can be a polygonal hole. Taking a circular hole as an example, the diameter of the connecting hole 41 can be 3mm-7mm.

[0053] In some embodiments, after the first mass block 1, the second mass block 2, and the connecting disk 4 are prepared, the three components can be placed into a mold to injection mold the elastic element 3, thereby making the structure of the shock absorber highly reliable.

[0054] In some optional embodiments of this utility model, a plurality of limiting grooves 42 are provided on the outer periphery of the connecting disk 4, and the opening of the limiting groove 42 faces the inner periphery of the second mass block 2; the second elastic part 32 is correspondingly provided with the limiting groove 42, and at least a portion of the second elastic part 32 is embedded in the corresponding limiting groove 42.

[0055] In this embodiment of the present invention, at least a portion of the second elastic part 32 is embedded in the corresponding limiting groove 42, so that the limiting groove 42 can limit the second elastic part 32, effectively ensuring that the connecting disc 4 transmits the circumferential motion to the second mass block 2 through the second elastic part 32, thereby ensuring that the second mass block 2 performs circumferential motion and achieving attenuation of the torsional vibration of the transmission shaft.

[0056] Specifically, the number of limiting grooves 42 can be the same as the number of second elastic parts 32, and the multiple limiting grooves 42 can be evenly spaced along the circumference of the connecting disk 4. The opening of the limiting groove 42 faces the second mass block 2, which facilitates the embedding of at least a portion of the second elastic part 32 into the corresponding limiting groove 42. The limiting groove 42 can limit the second elastic part 32 from the circumference of the connecting disk 4. In this way, when the connecting disk 4 rotates around its axis, the second elastic part 32 can drive the second mass block 2 to rotate around the axis of the connecting disk 4.

[0057] In some optional embodiments of this utility model, the vibration absorber further includes a limiting plate 5, the axis of the inscribed cylindrical surface of the limiting plate 5 coincides with the axis of the inscribed cylindrical surface of the second elastic part 32; the limiting plate 5 is disposed between the connecting plate 4 and the second mass block 2 along the radial direction of the connecting plate 4; wherein, the limiting plate 5 is arranged between at least two adjacent second elastic parts 32.

[0058] In this embodiment of the invention, two adjacent first elastic parts 31 can be connected by a limiting plate 5, so that the limiting plate 5 can limit and support the first elastic parts 31. Moreover, the axis of the inner cylindrical surface of the limiting plate 5 coincides with the axis of the inner cylindrical surface of the second elastic part 32, which can ensure the reliability and stability of the second elastic part 32 driving the second mass block 2 to perform circular motion, thereby improving the effect of damping the torsional vibration of the transmission shaft.

[0059] Specifically, the limiting plate 5 can be an arc-shaped plate, and the arc of the limiting plate 5, the outer circle of the second mass block 2, and the inner cylindrical surface of the connecting plate 4 can be arranged coaxially.

[0060] Specifically, the number of limiting plates 5 can be one, two, or three, etc., and this embodiment of the present invention does not specifically limit this. A limiting plate 5 can be arranged between some adjacent pairs of second elastic parts 32, or a limiting plate 5 can be arranged between every two adjacent pairs of second elastic parts 32.

[0061] Specifically, the limiting plate 5 can be arranged on the outer periphery of the connecting plate 4 and between the second mass block 2. This can prevent the connecting plate 4 from directly contacting the second mass block 2 and reduce the friction force on the second mass block 2, which is beneficial to ensuring the vibration characteristics of the second mass block 2 and thus ensuring the attenuation effect on the torsional vibration of the transmission shaft.

[0062] Specifically, the limiting plate 5 can be made of a material with a low coefficient of friction, such as nylon or silicone.

[0063] Optionally, the connecting disk 4 includes a plurality of protrusions 43, and a limiting groove 42 is formed between two adjacent protrusions 43; at least a portion of the second elastic part 32 is embedded in the limiting groove 42, so as to limit the second elastic part 32 and ensure the reliability and stability of the second elastic part 32 moving in a circular motion with the connecting disk 4.

[0064] Furthermore, along the radial direction of the connecting disc 4, the limiting plate 5 is fitted with a clearance between the protrusion 43 and the inner circumference of the second mass block 2. That is, the thickness of the limiting plate 5 in the radial direction of the connecting disc 4 is less than the gap width between the protrusion 43 and the inner circumference of the second mass block 2 in the radial direction of the connecting disc 4. This clearance fit between the limiting plate 5 and the second mass block 2 helps to reduce the sliding friction between the limiting plate 5 and the second mass block 2, which is beneficial to ensuring the vibration characteristics of the second mass block 2, and thus ensuring the attenuation effect on the torsional vibration of the transmission shaft.

[0065] Specifically, the thickness of the limiting plate 5 in the radial direction of the connecting plate 4 is 0.1-0.2 mm smaller than the gap width between the protrusion 43 and the inner circumference of the second mass block 2 in the radial direction of the connecting plate 4.

[0066] Specifically, the thickness of the limiting plate 5 in the radial direction of the connecting plate 4 can be 1-2 mm, so that the width of the contact area between the limiting plate 5 and the second elastic part 32 can be 1-2 mm, so as to ensure the reliability of the connection between the limiting plate 5 and the second elastic part 32.

[0067] Specifically, the elastic element 3, the first mass block 1, the second mass block 2, and the limiting plate 5 can be integrally formed through a vulcanization process.

[0068] Optionally, such as Figure 5 As shown, the limiting plate 5 has a through hole 51 that runs radially through the connecting plate 4, which can effectively reduce the contact area between the limiting plate 5 and the second mass block 2, and further reduce the sliding friction between the limiting plate 5 and the second mass block 2.

[0069] Specifically, the shape of the through hole 51 can be square, round, elliptical or irregular, etc., and the number of through holes 51 can be one, two or more, etc., which are not specifically limited in this embodiment of the present invention.

[0070] In some optional embodiments of this utility model, the first elastic part 31 is provided with annular grooves 311 on opposite sides of the connecting disk 4 in the axial direction, so as to adjust the vibration characteristics of the first elastic part 31, ensure the rigidity of the first elastic part 31, and thus ensure the reliability of the connecting disk 4 in transmitting the bending vibration of the transmission shaft to the first mass block 1 through the first elastic part 31.

[0071] Specifically, the first elastic part 31 has annular grooves 311 arranged on both sides of the connecting plate 4 in the axial direction. The annular grooves 311 on both sides of the first elastic part 31 in the axial direction of the connecting plate 4 can be symmetrically distributed, eliminating the need for error prevention and ensuring the pure mode shape of the first mass block 1.

[0072] For example, such as Figure 3 As shown, four second elastic parts 32 are connected to the first elastic part 31 as a whole through connecting parts 33, and the four second elastic parts 32 are evenly distributed around the center of the connecting disk 4. The second elastic part 32 includes an annular part and a wrapping part. The annular part is provided with annular grooves 311 on both sides of the connecting disk 4 in the axial direction, so that the wrapping part is drum-shaped. The surface of the wrapping part forms anti-collision protrusions to protect the first mass block 1.

[0073] In some optional embodiments of this utility model, along the axial direction of the connecting disk 4, the thickness of the first elastic part 31 is less than the thickness of the connecting disk 4, and the surface of the connecting disk 4 can protrude from the surface of the first elastic part 31 and the surface of the first mass block 1.

[0074] In this embodiment of the present invention, along the axial direction of the connecting disk 4, the thickness of the first elastic part 31 and the first mass block 1 is smaller than the thickness of the connecting disk 4, so that the surface of the first elastic part 31 and the first mass block 1 is lower than the surface of the connecting disk 4, which can avoid interference between the first elastic part 31 and the first mass block 1 and improve the reliability of the connection between the connecting disk 4 and the transmission shaft.

[0075] In some embodiments of this utility model, the connecting plate 4 is provided with at least one set of mounting units 44, each set of mounting units 44 including a first mounting hole 441, a second mounting hole 442, a third mounting hole 443 and a fourth mounting hole 444 evenly spaced along the circumference of the connecting plate 4; the first mounting hole 441, the second mounting hole 442, the third mounting hole 443 and the fourth mounting hole 444 all pass through the connecting plate 4 along the axial direction.

[0076] In this embodiment of the invention, the connecting disc 4 can be assembled with the drive shaft through the first mounting hole 441, the second mounting hole 442, the third mounting hole 443, and the fourth mounting hole 444, which can improve the reliability of assembling the connecting disc 4 and the drive shaft. When there are multiple mounting units 44, there are more mounting positions on the connecting disc 4, which can further improve the convenience of assembling the connecting disc 4 and the drive shaft, thereby improving assembly efficiency.

[0077] Specifically, the number of installation units 44 can be one, two, three, four or five, etc., and this embodiment of the utility model does not make a specific limitation in this regard.

[0078] For example, such as Figure 4As shown, the overall structure of the connecting disc 4 can be flower-shaped, with four protrusions 43 on its outer periphery. A limiting groove 42 is formed between two adjacent protrusions 43. The connecting disc 4 can be formed by extrusion molding. Three sets of mounting units 44 are provided on the connecting disc 4, and the mounting holes in the three sets of mounting units 44 are arranged in a circular array.

[0079] Specifically, the universal joint of the drive shaft has a universal joint fork, which can be assembled with the first mounting hole 441, the second mounting hole 442, the third mounting hole 443 and the fourth mounting hole 444 in the same mounting unit 44 to realize the connection of the vibration absorber to the vehicle's transmission system.

[0080] The vibration absorber described in this embodiment of the utility model has at least the following advantages:

[0081] In this embodiment of the invention, the connecting disc is connected to the drive shaft. Since the first elastic portion wraps around the outer periphery of the first mass block and connects to the inner periphery of the connecting disc, the inner periphery of the connecting disc is connected to the first mass block through the first elastic portion. Thus, the connecting disc can transmit the bending vibration of the drive shaft to the first mass block, thereby attenuating the bending vibration of the drive shaft. Since the second elastic portion connects between the inner periphery of the second mass block and the outer periphery of the connecting disc, the connecting disc can connect to the second mass block through the second elastic portion. Thus, the connecting disc can transmit the torsional vibration of the drive shaft to the second mass block, thereby attenuating the torsional vibration of the drive shaft. In this embodiment of the invention, both bending and torsional vibrations of the drive shaft can be attenuated simultaneously, greatly eliminating the vibration of the drive shaft, reducing kinetic energy loss, allowing the drive shaft to transmit more kinetic energy, and improving the working efficiency of the drive shaft.

[0082] Secondly, this utility model also discloses a vehicle, which may include a drive shaft and the aforementioned vibration absorber; the connecting plate of the vibration absorber is connected to the drive shaft.

[0083] In this embodiment of the invention, the vehicle may include, but is not limited to, automobiles, buses, or trucks.

[0084] Specifically, the vibration absorber is connected to the drive shaft, which can attenuate the vibration of the drive shaft, improve the stability of the vehicle's transmission system, and ensure the safety and comfort of the vehicle.

[0085] The vehicle described in this embodiment of the utility model has at least the following advantages:

[0086] In this embodiment of the invention, the connecting disc is connected to the drive shaft. Since the first elastic portion wraps around the outer periphery of the first mass block and connects to the inner periphery of the connecting disc, the inner periphery of the connecting disc is connected to the first mass block through the first elastic portion. Thus, the connecting disc can transmit the bending vibration of the drive shaft to the first mass block, thereby attenuating the bending vibration of the drive shaft. Since the second elastic portion connects between the inner periphery of the second mass block and the outer periphery of the connecting disc, the connecting disc can connect to the second mass block through the second elastic portion. Thus, the connecting disc can transmit the torsional vibration of the drive shaft to the second mass block, thereby attenuating the torsional vibration of the drive shaft. In this embodiment of the invention, both bending and torsional vibrations of the drive shaft can be attenuated simultaneously, greatly eliminating the vibration of the drive shaft, reducing kinetic energy loss, allowing the drive shaft to transmit more kinetic energy, and improving the working efficiency of the drive shaft.

[0087] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0088] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0089] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand this utility model, and the content of this specification should not be construed as a limitation of this utility model. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation and application scope based on this utility model. It is neither necessary nor possible to exhaustively list all implementation methods here, but obvious changes or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A vibration damper for attenuating the vibration of a drive shaft, characterized in that, include: A first mass block (1), a second mass block (2), an elastic element (3), and a connecting disc (4) for connecting the drive shaft; the elastic element (3) includes a first elastic portion (31) and a plurality of second elastic portions (32) spaced circumferentially along the connecting disc (4); The first elastic part (31) wraps around the outer periphery of the first mass block (1) and is connected to the inner periphery of the connecting disk (4); The second elastic part (32) is connected between the inner periphery of the second mass block (2) and the outer periphery of the connecting disk (4).

2. The vibration absorber according to claim 1, characterized in that, The connecting disk (4) is provided with a plurality of connecting holes (41), the plurality of connecting holes (41) are distributed at intervals along the circumference of the connecting disk (4), and the connecting holes (41) are radially connected along the connecting disk (4); The elastic element (3) further includes a connecting part (33), which is respectively provided with the second elastic part (32) and the connecting hole (41). The connecting part (33) passes through the corresponding connecting hole (41). One end of the connecting part (33) is connected to the first elastic part (31), and the other end of the connecting part (33) is connected to the corresponding second elastic part (32).

3. The vibration absorber according to claim 1, characterized in that, The outer periphery of the connecting disk (4) is provided with a plurality of limiting grooves (42), and the opening of the limiting grooves (42) faces the inner periphery of the second mass block (2); The second elastic part (32) is correspondingly disposed in the limiting groove (42), and at least a portion of the second elastic part (32) is embedded in the corresponding limiting groove (42).

4. The vibration absorber according to claim 1, characterized in that, The vibration absorber also includes a limiting plate (5), the axis of the inner cylindrical surface of the limiting plate (5) coincides with the axis of the inner cylindrical surface of the second elastic part (32); Along the radial direction of the connecting disk (4), the limiting plate (5) is disposed between the connecting disk (4) and the second mass block (2); The limiting plate (5) is arranged between at least two adjacent second elastic portions (32).

5. The vibration absorber according to claim 4, characterized in that, The connecting disk (4) includes a plurality of protrusions (43), and a limiting groove (42) is formed between two adjacent protrusions (43); At least a portion of the second elastic part (32) is embedded in the limiting groove (42); Along the radial direction of the connecting disc (4), the limiting plate (5) is fitted with a clearance between the protrusion (43) and the inner periphery of the second mass block (2).

6. The vibration absorber according to claim 4, characterized in that, The limiting plate (5) has a through hole (51) that extends radially through the connecting plate (4).

7. The vibration absorber according to claim 1, characterized in that, The first elastic part (31) has an annular groove (311) on opposite sides of the connecting disk (4) in the axial direction.

8. The vibration absorber according to claim 1, characterized in that, Along the axial direction of the connecting disk (4), the surface of the connecting disk (4) protrudes from the surfaces of the first elastic part (31) and the first mass block (1).

9. The vibration absorber according to claim 1, characterized in that, The connecting plate (4) is provided with at least one set of mounting units (44), each set of mounting units (44) including a first mounting hole (441), a second mounting hole (442), a third mounting hole (443) and a fourth mounting hole (444) arranged evenly at intervals along the circumference of the connecting plate (4); The first mounting hole (441), the second mounting hole (442), the third mounting hole (443) and the fourth mounting hole (444) all extend along the axial direction of the connecting plate (4).

10. A vehicle, characterized in that, Includes a drive shaft and a vibration absorber as described in any one of claims 1-9; The connecting plate (4) of the vibration absorber is connected to the drive shaft.

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