CN218817864U - Torsional damper and have its transmission shaft and car - Google Patents
Torsional damper and have its transmission shaft and car Download PDFInfo
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- CN218817864U CN218817864U CN202223167467.4U CN202223167467U CN218817864U CN 218817864 U CN218817864 U CN 218817864U CN 202223167467 U CN202223167467 U CN 202223167467U CN 218817864 U CN218817864 U CN 218817864U
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- torsional
- transmission shaft
- torsional damper
- damper
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 23
- 238000004073 vulcanization Methods 0.000 claims description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 9
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a torsional vibration damper, which comprises a torsional vibration damper body; the torsional damper body is cylindrical and comprises a rubber body and a metal framework, and the torsional damper body is arranged in a shaft tube of an automobile transmission shaft. The metal framework is cylindrical, and the rubber body is wrapped outside the metal framework to form a cylindrical structure. The torsional damper body is in interference fit with the inner wall of the shaft tube of the automobile transmission shaft in a press-fitting mode. Still provide a transmission shaft and car that have it. The vibration reduction device can reduce the torsional vibration and the vibration of a power transmission system under the condition of not increasing the number of parts and extra arrangement space, and is suitable for the NVH vibration reduction and noise reduction requirements of different vehicle types and different frequency sections.
Description
Technical Field
The utility model relates to a vehicle transmission system, concretely relates to torsional damper and have its transmission shaft and car.
Background
The transmission shaft is a rotating device which is connected between the power assembly and the drive axle and is used for transmitting power. The torsional vibration damper is used for changing torsional vibration in a power transmission system, changing the frequency of a transmission system and reducing NVH problems such as vibration, noise and the like. In the existing automobile transmission system, if NVH problems such as torsional vibration, jitter, abnormal sound and the like occur in the transmission system, the commonly used torsional vibration damping structure is an external torsional vibration damper and a flexible coupling, wherein the structure adopting the external torsional vibration damper needs to be additionally provided with a part, the whole automobile assembly process needs to be changed, and the assembly difficulty and the workload are increased; in addition, the external torsional damper is connected and matched with the transmission shaft/speed changer, so the outer diameter of the external torsional damper is far larger than that of the transmission shaft, and a larger arrangement space is required in arrangement; the flexible coupling replaces a connecting flange of a transmission shaft, is directly assembled on the rotating shaft and connected with the transmission, and solves the problem of increased assembly space and assembly workload, but the flexible coupling has high requirements on an arrangement included angle between the two connected shafts (a transmission output shaft and the transmission shaft) (generally, the arrangement included angle is less than 1 degree, and the working included angle is less than 3 degrees), and most of the whole vehicle arrangement cannot meet the application requirements; in addition, a built-in broadband torsional vibration damper structure is adopted, and the currently available built-in torsional vibration damper realizes frequency conversion by increasing the number of layers of the rubber metal frame in the radial direction continuously. The structure needs to be vulcanized for many times in the development of the same part, and a plurality of metal frame molds with different sizes need to be opened, so that the development cost is high, and the process is complex.
CN 213808741U discloses a "transmission shaft with torsional damper", the left end of the transmission shaft body is fixedly provided with a first connecting piece, the right end of the first connecting piece is fixedly connected with a first flange, the first flange is movably connected with a first shaft tube through a universal joint, the right end of the first shaft tube is fixedly connected with a telescopic sleeve, the inside of the telescopic sleeve is fixedly provided with a spline shaft, the outside of the spline shaft is fixedly wrapped with a bearing housing, the transmission shaft with torsional damper is additionally provided with a torsional damper at the flange at the rear end of the transmission shaft, and is assembled into an integral type, the frequency of the torsional damper depends on the torsional resonance frequency of the transmission shaft caused by the engine at a certain rotation speed, the transmission shaft with torsional damper effectively avoids the torsional resonance problem of the transmission system of the whole vehicle, the in-vehicle roaring abnormal sound caused by resonance is solved, the comfort of the whole vehicle is improved obviously, and the improvement effect is safer.
CN 201836199U discloses a "transmission shaft with a concealed rubber torsional vibration damper", which is characterized in that: the rubber pressing-in device consists of an inner shaft tube, an outer shaft tube and pressing-in rubber, wherein the pressing-in rubber is vulcanized on the outer surface of the inner shaft tube, and the vulcanized pressing-in rubber of the inner shaft tube is pressed into the outer shaft tube. The bidirectional torsional vibration damper has the characteristics of ingenious design, compact structure and the like, can reduce the impact on the main speed reducer caused by the fluctuation of the rotating speed of the engine and can also absorb the torsional fluctuation caused by the angle change of the transmission shaft; the vibration caused by high-speed rotation of the self-body is effectively absorbed; the material is simple and the economical efficiency is good; through the friction transmission, have overload protection function.
The technical solutions disclosed in the above two patent documents are beneficial attempts in the technical field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a torsional damper, it can be at torsional vibration, the shake that does not increase part quantity and extra condition of arranging the space and descend drivetrain, the NVH damping that adapts to different motorcycle types, different frequency sections falls the demand of making an uproar. Still provide a transmission shaft and car that have it.
A torsional damper, including the torsional damper body, characterized by: the torsional damper body is cylindrical and comprises a rubber body and a metal framework, and the torsional damper body is arranged in a shaft tube of an automobile transmission shaft.
Further, the metal framework is cylindrical, and the rubber body is covered outside the metal framework to form a cylindrical structure.
Further, the torsional damper body is in interference fit with the inner wall of the shaft tube of the automobile transmission shaft in a press fitting mode.
Furthermore, the part of the torsional vibration damper body, which is matched with the inner wall of the shaft tube of the automobile transmission shaft, is coated with adhesive.
Furthermore, the number of the torsional damper bodies arranged in the shaft tube of the automobile transmission shaft is multiple.
Further, the rubber body is coated outside the metal framework through a vulcanization process.
Further, the metal framework is made of spring steel.
Further, the rubber body is wrapped outside the metal framework through a vulcanization process, the thickness of the rubber body is equal, and the inner diameter d2 is slightly larger than one third of the outer diameter d 1.
A car transmission shaft, be equipped with a plurality of foretell torsional damper bodies in its central siphon.
An automobile, characterized by: including the above-mentioned automotive transmission shaft.
The utility model has the advantages that:
the torsional vibration damper body is arranged in the shaft tube of the automobile transmission shaft, so that the problems of NVH (noise vibration harshness) of a transmission system, such as torsional vibration, jitter, abnormal sound and the like, are solved under the conditions that the arrangement space of the whole automobile is limited and the arrangement included angle between the output shaft of the transmission and the transmission shaft is more than 1 degree; meanwhile, the frequency conversion can be realized by increasing the number of the torsion damper bodies with the same structure in the axial direction, so that the requirements of different vehicle types and different frequency sections on NVH vibration reduction and noise reduction are met, and the requirements of different vehicle types and different frequency sections on NVH vibration reduction and noise reduction are met. Meanwhile, extra installation space is not increased, and the assembly workload and the assembly difficulty are not increased.
Description of the drawings:
FIG. 1 is a schematic structural view of a conventional propeller shaft for an automobile;
FIG. 2 is a cross-sectional view of the present invention installed within the shaft tube of an automotive transmission shaft;
fig. 3 is a sectional view taken along line a-a of the drawing.
The specific implementation mode is as follows:
the technical solution of the present invention will be explained in detail with reference to the accompanying drawings.
A conventional propeller shaft for an automobile is shown in fig. 1. The connecting device is composed of a connecting flange 1, a cross bearing 2, a welding fork 3, a shaft tube 4, a middle support 5, a sliding shaft fork 6, a spline pair 7 and a dust cover 8, wherein two ends of the connecting flange 1 are respectively connected with a transmission and a drive axle, and the middle support 5 is connected with a vehicle body. The spline pair realizes the change of the length of the transmission shaft in the moving process of the vehicle. The utility model discloses an on current car transmission shaft, do not increase part quantity and extra under arranging the condition in space.
Referring to fig. 2, the variable frequency torsional vibration damper structure for the transmission shaft of the automobile comprises a torsional vibration damper body 9, and is characterized in that: the torsional damper body 9 is cylindrical and is composed of a rubber body 91 and a metal framework 92, and the torsional damper body 9 is arranged in the shaft tube 4 of the automobile transmission shaft. The problem of insufficient space caused by the external arrangement of the torsional damper and the problem of difficult assembly caused by the matching of multiple parts are solved.
The metal framework 92 is cylindrical, and the rubber body 91 is wrapped outside the metal framework 92 to form a cylindrical structure. So as to absorb the torsional vibration of the transmission system, change the natural frequency of the transmission system and solve the NVH problems of jitter, abnormal sound and the like.
The torsional damper body 9 is in interference fit with the inner wall of the shaft tube 4 of the automobile transmission shaft in a press-fitting mode.
The part of the torsional damper body 9 matched with the inner wall of the shaft tube 4 of the automobile transmission shaft is coated with adhesive, so that the assembling reliability is improved.
A plurality of torsional vibration damper bodies 9 are arranged in the shaft tube 4 of the automobile transmission shaft. The frequency of the torsional damper is changed to meet the NVH vibration reduction and noise reduction requirements of different vehicle types and different frequency bands.
The rubber body 91 is coated outside the metal framework 92 through a vulcanization process.
The metal framework 92 is made of spring steel. So as to ensure that the outer wall of the torsional vibration damper body is reliably matched with the inner wall of the shaft tube 4 of the automobile transmission shaft.
The rubber body 91 is wrapped outside the metal framework 92 by a vulcanization process, and has the same thickness, and the inner diameter d2 is slightly larger than one third of the outer diameter d 1. So as to ensure that the torsional damper body has enough supporting strength and good ventilation and heat dissipation conditions.
A car transmission shaft, be equipped with many foretell torsional damper body 9 in its central siphon 4.
An automobile, including foretell automobile transmission shaft.
Claims (8)
1. A torsional vibration damper comprising a torsional vibration damper body (9), characterized in that: the torsional damper body (9) is cylindrical and consists of a rubber body (91) and a metal framework (92), and the torsional damper body (9) is arranged in a shaft tube (4) of an automobile transmission shaft; the metal framework (92) is cylindrical, and the rubber body (91) is covered outside the metal framework (92) to form a cylindrical structure; the torsional damper body (9) is in interference fit with the inner wall of the shaft tube (4) of the automobile transmission shaft in a press fitting mode.
2. The torsional damper of claim 1, wherein: and the part of the torsional damper body (9) matched with the inner wall of the shaft tube (4) of the automobile transmission shaft is coated with adhesive.
3. The torsional damper of claim 1 or 2, wherein: a plurality of torsional damper bodies (9) are arranged in the shaft tube (4) of the automobile transmission shaft.
4. The torsional damper of claim 1 or 2, wherein: the rubber body (91) is coated outside the metal framework (92) through a vulcanization process.
5. The torsional damper of claim 1, wherein: the metal framework (92) is made of spring steel.
6. The torsional damper of claim 4, wherein: the rubber body (91) is wrapped outside the metal framework (92) through a vulcanization process, the thickness of the rubber body is equal, and the inner diameter d2 is slightly larger than one third of the outer diameter d 1.
7. An automobile transmission shaft is characterized in that: a plurality of torsional vibration damper bodies (9) as claimed in any of claims 1 to 6 being arranged in the shaft tube (4) thereof.
8. An automobile, characterized by: comprising the automotive propeller shaft of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223167467.4U CN218817864U (en) | 2022-11-29 | 2022-11-29 | Torsional damper and have its transmission shaft and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223167467.4U CN218817864U (en) | 2022-11-29 | 2022-11-29 | Torsional damper and have its transmission shaft and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218817864U true CN218817864U (en) | 2023-04-07 |
Family
ID=87037839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223167467.4U Active CN218817864U (en) | 2022-11-29 | 2022-11-29 | Torsional damper and have its transmission shaft and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218817864U (en) |
-
2022
- 2022-11-29 CN CN202223167467.4U patent/CN218817864U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231230 Address after: 401121 Basement 2- Commercial 8, Building 6-12, Zhongyu Xiangnai Mansion, No. 101-113, Xinji Avenue, Longxi Street, Yubei District, Chongqing Patentee after: Chongqing Changan Kaicheng Automobile Technology Co.,Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Patentee before: Chongqing Changan Automobile Co.,Ltd. |
|
| TR01 | Transfer of patent right |