CN212804069U

CN212804069U - Torsional damper assembly and automobile

Info

Publication number: CN212804069U
Application number: CN202021480165.0U
Authority: CN
Inventors: 聂瑶; 张进平; 付荣鑫; 刘玉平
Original assignee: Jiangling Motors Corp Ltd
Current assignee: Jiangling Motors Corp Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-03-26
Anticipated expiration: 2030-07-23

Abstract

The utility model provides a torsional damper assembly and an automobile, wherein the torsional damper assembly comprises a torsional damper body, which comprises a metal outer ring, a rubber ring and a metal inner ring which are coaxial and are sequentially arranged from outside to inside, the rubber ring is connected with the inner wall of the metal outer ring in a laminating way, the metal inner ring is connected with the rubber ring in a laminating way, and the metal inner ring is used for being in interference fit with a transmission shaft tube; the rubber ring is provided with at least one limiting cavity along the axial direction, each limiting cavity is internally provided with a plastic pin, and the plastic pins are in interference fit with the limiting cavities. The utility model discloses set up the rubber circle between metal inner ring and metal outer loop, this rubber circle can attenuate transmission system's moment of torsion undulant, sets up the plastics round pin in the spacing intracavity of rubber circle, can reduce the radial displacement of rubber circle, can also guarantee that the rubber circle can obtain effective release at the in-process rubber stress of undergauge, and further attenuation transmission system's moment of torsion is undulant, reduces the whole car low-speed interval noise and can reach 8dB at most, the NVH performance of very big improvement car.

Description

Torsional damper assembly and automobile

Technical Field

The utility model relates to the technical field of automobiles, especially, relate to a torsional damper assembly and car.

Background

Torsional vibration of an automobile power transmission system is a main source of automobile structural vibration and noise in an automobile, and has an important influence on the NVH quality of the automobile. With the improvement of automobile power, the light weight of automobile structure and the continuous improvement of the requirement of people on the riding comfort of the automobile, the problem of torsional vibration of a power transmission system becomes more prominent. The torsional vibration damper has good effects in changing the natural frequency of a power transmission system, reducing torsional vibration, reducing shafting dynamic load and eliminating noise, so that the research on the torsional vibration damper has important practical significance.

The existing torsional damper assembly is simple in structure and comprises a torsional damper body and a transmission shaft, wherein the torsional damper body is connected with the transmission shaft. However, such torsional damper assemblies still have large torque fluctuations, which can lead to reduced NVH performance of the vehicle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a torsional damper assembly, solve the undulant great NVH performance reduction's that leads to the car problem of torsional damper assembly moment of torsion now.

The utility model provides a torsional damper assembly, including the torsional damper body, the torsional damper body includes coaxial and metal outer loop, rubber circle and the metal inner ring that sets gradually from outside to inside, the rubber circle with the inner wall laminating of metal outer loop is connected, the metal inner ring with the rubber circle laminating is connected, the metal inner ring is used for with transmission shaft central siphon interference fit;

the rubber ring is provided with at least one limiting cavity in the axial direction, each limiting cavity is internally provided with a plastic pin, and the plastic pins are in interference fit with the limiting cavities.

According to the utility model provides a torsional damper assembly has following beneficial effect: the utility model discloses a torsional damper body is connected with the transmission shaft central siphon and becomes a whole, the dynamic balance's of assembly reliability obtains guaranteeing, set up the rubber circle between metal inner ring and the metal outer loop, this rubber circle can attenuate transmission system's moment of torsion undulant, and set up the plastics round pin in the spacing intracavity of rubber circle, can reduce the radial displacement of rubber circle, can also guarantee that the rubber circle can obtain effective release at the in-process rubber stress of undergauge, further attenuate transmission system's moment of torsion is undulant, it can reach 8dB to reduce whole car low-speed interval noise at most, the NVH performance of very big improvement car.

In addition, according to the present invention, the torsional damper assembly can further have the following additional technical features:

furthermore, the number of the limiting cavities is at least two, and the at least two limiting cavities are arranged in a circumferential mode by taking the center of the rubber ring as a circle center.

Further, the torsional damper assembly further comprises a transmission shaft welding fork, the transmission shaft welding fork comprises a welding seat, a welding hole is formed in the surface of the welding seat, the welding hole is matched with the transmission shaft tube, the transmission shaft tube is welded and fixed in the welding hole, and the welding seat is in interference fit with the metal inner ring.

Further, the welding seat and the transmission shaft tube are coaxially arranged.

Further, the torsional damper assembly further comprises a welding fork body, a mounting bracket is arranged on the surface, away from the welding hole, of the welding seat, and the welding fork body is connected with the mounting bracket.

Furthermore, each mounting bracket is provided with a mounting hole, the mounting holes are matched with the connecting shafts, and the connecting shafts are in interference fit with the mounting holes.

Further, the connecting support and the fixed shaft are coaxially arranged.

The utility model also provides an automobile, the automobile includes foretell torsional damper assembly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an exploded view of a torsional damper assembly according to an embodiment of the present invention;

FIG. 2 is an assembly view of the torsional damper assembly and the driveshaft tube of the embodiment of the present invention;

FIG. 3 is a cross-sectional view of a torsional vibration damper assembly in accordance with an embodiment of the present invention;

FIG. 4 is a first data chart of NVH optimization testing without a torsional damper assembly and with a torsional damper assembly in accordance with an embodiment of the present invention;

FIG. 5 is a second data chart of NVH optimization testing without a torsional damper assembly and with a torsional damper assembly according to an embodiment of the present invention;

reference numerals:

10. a torsional damper body; 11. a metal outer ring; 12. a rubber ring; 13. a metal inner ring; 20. a plastic pin; 30. welding a base; 31. mounting a bracket; 311. mounting holes; 40. connecting a bracket; 50. a connecting shaft; 60. a fixed shaft; 70. a transmission shaft tube.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 3, an embodiment of the present invention provides a torsional damper assembly, which includes a torsional damper body 10, wherein the torsional damper body 10 includes a metal outer ring 11, a rubber ring 12 and a metal inner ring 13, which are coaxial and sequentially arranged from outside to inside.

The rubber ring 12 is attached to the inner wall of the metal outer ring 11, the metal inner ring 13 is attached to the rubber ring 12, and the metal inner ring 13 is in interference fit with the transmission shaft tube 70. The torsional damper body 10 and the transmission shaft tube 70 are connected into a whole, the reliability of the dynamic balance of the assembly is guaranteed, the rubber ring 12 is arranged between the metal inner ring 13 and the metal outer ring 11, the rubber ring 12 can attenuate the torque fluctuation of a transmission system, and on the premise of not influencing the assembly of the transmission shaft, the torsional damper has the advantages of simple structure and reliable performance, can effectively reduce the torsional vibration of the transmission system, reduces the noise and improves the driving comfort.

The rubber ring 12 is provided with at least one limiting cavity in the axial direction, each limiting cavity is internally provided with a plastic pin 20, and the plastic pins 20 are in interference fit with the limiting cavities. Set up plastics round pin 20 in the spacing intracavity of rubber circle 12, can reduce the radial displacement of rubber circle 12, can also guarantee that rubber circle 12 can obtain effective release at the in-process rubber stress of undergauge, further attenuate transmission system's moment of torsion fluctuation, very big improvement car NVH performance, it can reach 8dB to reduce the whole car low-speed interval noise at most.

The embodiment of the utility model provides an in, spacing chamber is equipped with four, four spacing chamber with the center of rubber circle 12 is the circle center and is the circumference range. And the plastic pins 20 are arranged in the plurality of limiting cavities, so that the torque fluctuation of a transmission system is further attenuated, and the noise is reduced.

The embodiment of the utility model provides an in, torsional damper assembly still includes transmission shaft welding fork, transmission shaft welding fork includes welded seat 30, and the shape of welded seat 30 and the shape looks adaptation of metal inner ring 13, the shape of welded seat 30 are cylindrical, the surface of welded seat 30 is equipped with the welding hole, and the shape of welding hole is circular, the welding hole with transmission shaft central siphon 70 looks adaptation, transmission shaft central siphon 70 welded fastening is in the welding hole, welded seat 30 with metal inner ring 13 interference fit, welded seat 30 with the coaxial setting of transmission shaft central siphon 70. The transmission shaft tube 70 is welded and fixed in the welding hole, and the transmission shaft tube 70 is connected with the torsional damper body 10 through the interference fit of the welding seat 30 and the metal inner ring 13, so that the connection stability of the transmission shaft and the damper body can be enhanced.

In the embodiment of the present invention, the torsional damper assembly further includes a welding fork body, the welding seat 30 is kept away from the surface of the welding hole is provided with the mounting bracket 31, and the welding fork body is connected with the mounting bracket 31. The development of an elongated weld yoke body on the driveshaft tube 70 enhances the dynamic balance reliability of the torsional damper assembly.

In the embodiment of the present invention, the welding fork body includes a connecting bracket 40 and a fixing shaft 60, the connecting bracket 40 is semicircular, the fixing shaft 60 is vertically connected to the middle of the convex surface of the connecting bracket 40, and the connecting bracket 40 and the fixing shaft 60 are coaxially disposed;

be equipped with connecting axle 50 between linking bridge 40's the both ends, installing support 31 is equipped with two, two installing support 31 is parallel to each other and the symmetry sets up, the both ends of connecting axle 50 respectively with two installing support 31 is connected. The dynamic balance reliability of the torsional damper assembly can be enhanced by lengthening the length of the drive shaft weld yoke by the stationary shaft 60.

The embodiment of the present invention provides each of the mounting brackets 31 is provided with a mounting hole 311, the mounting hole 311 is adapted to the connecting shaft 50, and the connecting shaft 50 is in interference fit with the mounting hole 311. The two ends of the connecting shaft 50 are fixed in the mounting holes 311, so that the connection stability of the welding seat 30 and the welding fork body can be enhanced.

Referring to fig. 4-5, do not take torsional damper assembly and motorcycle type area for certain four drives the utility model discloses a data chart of NVH optimization test of torsional damper assembly, the operating mode of collection is four grades of noise data in the full throttle car, lines 1-does not take the whole noise of torsional damper assembly, lines 2-takes the noise of torsional damper assembly, lines 3-does not take the 2 steps seat vibration of torsional damper assembly, lines 4-takes the 2 steps seat vibration of torsional damper assembly.

It can be seen from FIG. 4 that at 1616rpm, the driver side has 67dB of in-vehicle noise with the torsional damper assembly and 72dB of in-vehicle noise without the torsional damper assembly. Explain to adopt the utility model discloses a torsional damper assembly can reduce the interior noise of car.

As can be seen from FIG. 5, at 1585rpm, the vehicle interior noise of the torsional damper assembly is 70dB at the rear right passenger in the vehicle, and is 78dB at the vehicle body noise without the torsional damper. Adopt the utility model discloses a torsional damper assembly can maximum reduction car interior noise 8 dB. Compare the motorcycle type of not taking the torsional damper assembly, take the utility model discloses a motorcycle type of torsional damper assembly can greatly improve the low rotational speed interval NVH performance of vehicle.

To sum up, the utility model discloses still provide a torsional damper assembly, beneficial effect lies in: the utility model discloses a torsional damper body 10 is connected with transmission shaft central siphon 70 and becomes a whole, the dynamic balance's of assembly reliability obtains guaranteeing, set up rubber circle 12 between metal inner ring 13 and the metal outer loop 11, this rubber circle 12 can attenuate transmission system's moment of torsion undulant, and set up plastics round pin 20 in the spacing intracavity of rubber circle 12, can reduce the radial displacement of rubber circle 12, can also guarantee that rubber circle 12 can obtain effective release at the in-process rubber stress of undergauge, further attenuation transmission system's moment of torsion is undulant, the NVH performance of very big improvement car, it can reach 8dB to reduce whole car low-speed interval noise at most.

Another embodiment of the present invention provides an automobile, comprising the torsional vibration damper assembly described above.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A torsional vibration damper assembly is characterized by comprising a torsional vibration damper body, wherein the torsional vibration damper body comprises a metal outer ring, a rubber ring and a metal inner ring which are coaxial and are sequentially arranged from outside to inside, the rubber ring is attached to the inner wall of the metal outer ring, the metal inner ring is attached to the rubber ring, and the metal inner ring is used for being in interference fit with a shaft tube of a transmission shaft;

2. The torsional vibration damper assembly of claim 1, wherein the limiting chambers are provided in at least two, and the at least two limiting chambers are arranged circumferentially around the center of the rubber ring.

3. The torsional damper assembly of claim 1, further comprising a transmission shaft welding yoke, wherein the transmission shaft welding yoke comprises a welding seat, a surface of the welding seat is provided with a welding hole, the welding hole is matched with the transmission shaft tube, the transmission shaft tube is welded and fixed in the welding hole, and the welding seat is in interference fit with the metal inner ring.

4. The torsional vibration damper assembly of claim 3, wherein the weld nest is disposed coaxially with the driveshaft tube.

5. The torsional damper assembly of claim 3, further comprising a weld yoke body, wherein a surface of the weld nest distal from the weld hole is provided with a mounting bracket, and wherein the weld yoke body is coupled to the mounting bracket.

6. The torsional damper assembly of claim 5, wherein the weld yoke body includes a connecting bracket and a stationary shaft, the connecting bracket being semi-circular in shape, the stationary shaft being perpendicularly connected to the convex surface of the connecting bracket;

the connecting device is characterized in that a connecting shaft is arranged between two ends of the connecting support, two mounting supports are arranged and are parallel to each other and symmetrically arranged, and two ends of the connecting shaft are connected with the two mounting supports respectively.

7. The torsional vibration damper assembly of claim 6, wherein each of the mounting brackets has a mounting hole, the mounting hole is adapted to the connecting shaft, and the connecting shaft is in interference fit with the mounting hole.

8. The torsional damper assembly of claim 6, wherein the attachment bracket is disposed coaxially with the fixed shaft.

9. An automobile comprising the torsional vibration damper assembly of any one of claims 1 to 8.