CN221647507U - Built-in dynamic damper and transmission shaft with same - Google Patents
Built-in dynamic damper and transmission shaft with same Download PDFInfo
- Publication number
- CN221647507U CN221647507U CN202322979087.9U CN202322979087U CN221647507U CN 221647507 U CN221647507 U CN 221647507U CN 202322979087 U CN202322979087 U CN 202322979087U CN 221647507 U CN221647507 U CN 221647507U
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- China
- Prior art keywords
- metal
- dumbbell
- dynamic damper
- rubber body
- transmission shaft
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 39
- 229920001971 elastomer Polymers 0.000 claims abstract description 26
- 238000005253 cladding Methods 0.000 claims abstract description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000033001 locomotion Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Motor Power Transmission Devices (AREA)
Abstract
The utility model discloses a built-in dynamic damper and a transmission shaft with the damper, which are used for being arranged in a shaft tube of an automobile transmission shaft and comprise a metal framework, a rubber body and a metal ring; the metal framework is of a dumbbell structure and comprises a dumbbell rod part and dumbbell sheet parts positioned at two sides of the dumbbell rod; the rubber body cladding sets up in the outside of metal skeleton, the metal loop corresponds the rubber body of suit at dumbbell pole portion, the metal loop is used for with the central siphon inner wall interference fit of transmission shaft. According to the utility model, the dynamic damper is arranged in the shaft tube of the transmission shaft, so that the torsional vibration and the vibration of the power transmission system can be reduced under the condition of not increasing extra arrangement space, and meanwhile, the frequency conversion can be conveniently realized by changing the hardness and the rigidity of the rubber body so as to adapt to the NVH vibration and noise reduction requirements of different vehicle types and different frequency bands.
Description
Technical Field
The utility model relates to the technical field of automobile transmission systems, in particular to a built-in dynamic damper and a transmission shaft with the damper.
Background
A propeller shaft is a component that transmits engine power through rotational motion, and is typically mounted in a central location in a vehicle, with one end connected to the engine and the other end connected to a transmission. At present, if the NVH problems such as torsional vibration, shake and abnormal sound occur in an automobile transmission system, the problem is usually solved by installing an external dynamic damper, however, the external dynamic damper needs a larger arrangement space, the arrangement mode of a chassis may need to be changed, the workload is large, and the improvement space is provided.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art, and provides a built-in dynamic damper which is arranged in a shaft tube of a transmission shaft through the dynamic damper, so that torsional vibration and vibration of a power transmission system can be reduced under the condition that no additional arrangement space is increased, and meanwhile, frequency conversion can be conveniently realized through changing the hardness and the rigidity of a rubber body so as to adapt to NVH vibration reduction and noise reduction requirements of different vehicle types and different frequency bands.
In order to achieve the above object, the present utility model provides a built-in dynamic damper for being installed in a shaft tube of a propeller shaft of an automobile, which comprises a metal skeleton, a rubber body and a metal ring;
The metal framework is of a dumbbell structure and comprises a dumbbell rod part and dumbbell sheet parts positioned at two sides of the dumbbell rod;
The rubber body cladding sets up in the outside of metal skeleton, the metal loop corresponds the rubber body of suit at dumbbell pole portion, the metal loop is used for with the central siphon inner wall interference fit of transmission shaft.
Further provided is that: the metal ring is of a C-shaped structure with an opening, and a rubber layer is coated on the outer wall of the metal ring matched with the inner wall of the shaft tube of the transmission shaft.
Further provided is that: the rubber body is coated outside the metal framework through a vulcanization process.
Further provided is that: the rubber body is made of natural rubber.
Further provided is that: the metal framework is made of 20# steel.
Further provided is that: the metal ring is made of spring steel.
The utility model also provides an automobile transmission shaft, wherein the built-in dynamic damper is arranged in the shaft tube.
Compared with the prior art, the dynamic damper is arranged in the shaft tube of the transmission shaft, so that the torsional vibration and the vibration of the power transmission system can be reduced under the condition of not increasing extra arrangement space, and meanwhile, the frequency conversion can be conveniently realized by changing the hardness and the rigidity of the rubber body so as to adapt to the NVH vibration and noise reduction requirements of different vehicle types and different frequency bands.
Drawings
FIG. 1 is a schematic view of a drive shaft with a damper according to the present utility model;
FIG. 2 is a schematic structural view of a damper;
FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2.
The following reference numerals are attached thereto in combination with the accompanying drawings:
100. A transmission shaft; 110. a shaft tube; 120. a sliding fork; 130. a cross bearing; 140. welding a fork; 150. three pin type movable universal joint; 200. a damper; 210. a metal skeleton; 211. a dumbbell bar portion; 212. dumbbell sheet parts; 220. a rubber body; 230. a metal ring; 231. an opening; 232. and a rubber layer.
Detailed Description
One embodiment of the present utility model will be described in detail below with reference to the attached drawings, but it should be understood that the scope of the present utility model is not limited by the embodiment.
The utility model relates to a transmission shaft 100 with a damper 200, as shown in fig. 1, which comprises a shaft tube 110, a dynamic damper 200 arranged in the shaft tube 110 in an interference fit manner, and a first connecting part and a second connecting part positioned at two ends of the shaft tube 110, wherein the first connecting part comprises a sliding fork 120, a cross bearing 130 and a welding fork 140, and the second connecting part is a three-pin type movable universal joint 150; the two ends of the transmission shaft 100 are respectively connected with the front transmission shaft 100 and the rear axle, wherein the three-pin type movable universal joint 150 realizes the change of the length of the transmission shaft 100 in the vehicle movement process; the built-in structure of the dynamic damper 200 can reduce torsional vibration and vibration of the power transmission system without increasing the layout space.
In this embodiment, as shown in fig. 1, 2 and 3, the built-in dynamic damper 200 is in interference fit with the inner wall of the shaft tube 110 of the transmission shaft 100 by press-fitting, and includes a metal skeleton 210, a rubber body 220 and a metal ring 230; the metal skeleton 210 is a dumbbell structure and is preferably made of 20# steel, and includes a dumbbell rod 211 and dumbbell pieces 212 at two ends of the dumbbell rod 211; the rubber body 220 is preferably made of natural rubber and is coated and arranged outside the metal framework 210 through a vulcanization process, and meanwhile, the frequency conversion can be conveniently realized by changing the hardness and the rigidity of the rubber body 220 so as to adapt to NVH vibration reduction and noise reduction requirements of different vehicle types and different frequency bands; the metal ring 230 is of a C-shaped structure with an opening 231 and is preferably made of spring steel 65Mn, which is correspondingly sleeved outside the rubber body 220 of the dumbbell rod 211, the outer diameter of the metal ring 230 is slightly larger than the inner diameter of the shaft tube 110 so that the dynamic damper 200 can be clamped in the shaft tube 110 through the interference fit of the metal ring 230, and preferably, the outer surface of the metal ring 230 is coated with a rubber layer 232, so that the matching reliability of the metal ring 230 and the inner wall of the shaft tube 110 can be ensured.
Compared with the prior art, the dynamic damper is arranged in the shaft tube of the transmission shaft, so that the torsional vibration and the vibration of the power transmission system can be reduced under the condition of not increasing extra arrangement space, and meanwhile, the frequency conversion can be conveniently realized by changing the hardness and the rigidity of the rubber body so as to adapt to the NVH vibration and noise reduction requirements of different vehicle types and different frequency bands.
The above disclosure is merely an example of the present utility model, but the present utility model is not limited thereto, and any variations that can be considered by a person skilled in the art should fall within the protection scope of the present utility model.
Claims (7)
1. The built-in dynamic damper is characterized by being arranged in a shaft tube of an automobile transmission shaft and comprising a metal framework, a rubber body and a metal ring;
The metal framework is of a dumbbell structure and comprises a dumbbell rod part and dumbbell sheet parts positioned at two sides of the dumbbell rod;
The rubber body cladding sets up in the outside of metal skeleton, the metal loop corresponds the rubber body of suit at dumbbell pole portion, the metal loop is used for with the central siphon inner wall interference fit of transmission shaft.
2. The built-in dynamic damper according to claim 1, wherein the metal ring has a C-shaped structure having an opening, and a rubber layer is coated on an outer wall of the metal ring, which is matched with an inner wall of the shaft tube of the transmission shaft.
3. The built-in dynamic damper according to claim 1, wherein the rubber body is coated on the outside of the metal frame through a vulcanization process.
4. The built-in dynamic damper of claim 1, wherein the rubber body is natural rubber.
5. The built-in dynamic damper of claim 1, wherein the metal skeleton is 20# steel.
6. The built-in dynamic damper of claim 1, wherein the metal ring is spring steel.
7. An automotive propeller shaft having the built-in dynamic damper according to any one of claims 1 to 6 mounted in a shaft tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322979087.9U CN221647507U (en) | 2023-11-02 | 2023-11-02 | Built-in dynamic damper and transmission shaft with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322979087.9U CN221647507U (en) | 2023-11-02 | 2023-11-02 | Built-in dynamic damper and transmission shaft with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221647507U true CN221647507U (en) | 2024-09-03 |
Family
ID=92510367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322979087.9U Active CN221647507U (en) | 2023-11-02 | 2023-11-02 | Built-in dynamic damper and transmission shaft with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221647507U (en) |
-
2023
- 2023-11-02 CN CN202322979087.9U patent/CN221647507U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |