CN214248218U - Crankshaft vibration reduction belt pulley sound-proof housing, engine and vehicle - Google Patents
Crankshaft vibration reduction belt pulley sound-proof housing, engine and vehicle Download PDFInfo
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- CN214248218U CN214248218U CN202120130468.8U CN202120130468U CN214248218U CN 214248218 U CN214248218 U CN 214248218U CN 202120130468 U CN202120130468 U CN 202120130468U CN 214248218 U CN214248218 U CN 214248218U
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Abstract
The utility model provides a bent axle damping belt pulley sound-proof housing, engine and vehicle, bent axle damping belt pulley sound-proof housing includes: the sound-proof cover shell is connected with the crankshaft vibration reduction belt pulley in a matching way, and an accommodating space is formed on one side, facing the crankshaft vibration reduction belt pulley, of the sound-proof cover shell; the sound insulation device is arranged in the accommodating space and is attached to the sound insulation cover shell; the sealing washer, set up in the sound-proof housing with between the crankshaft damping belt pulley, through setting up the noise insulation in the inside of sound-proof housing casing to with the laminating of sound-proof housing casing, can absorb and completely cut off the noise of crankshaft shafting transmission, weaken the diffusion of crankshaft shafting's running noise at crankshaft damping belt pulley department, reduce crankshaft damping belt pulley's near field noise.
Description
Technical Field
The utility model relates to a, in particular to bent axle damping belt pulley sound-proof housing, engine and vehicle.
Background
With the increasing demand for comfort performance of automobiles, Noise, Vibration and Harshness (NVH) performance of whole automobiles and engines is also receiving more and more attention from automobile enterprises and users. When the engine runs, the crankshaft system generates some vibration noise during rotation, and when the crankshaft drives parts such as a timing train and an oil pump, corresponding running noise is generated. The damper pulley is typically bolted rigidly to the front end of the crankshaft for damping torsional vibrations during operation of the engine crankshaft and for driving the associated components of the front end gear train. The vibration and the running noise generated by a crankshaft shaft system of the engine can be directly transmitted to the crankshaft vibration reduction belt pulley, the crankshaft vibration reduction belt pulley is of a similar horn-shaped structure due to structural arrangement reasons, the structure amplifies the noise caused by the transmission of the crankshaft shaft system to a certain extent and diffuses outwards, so that the near-field noise at the crankshaft vibration reduction belt pulley at the front end of the engine is large, and the NVH performance of the engine and the whole vehicle is adversely affected.
Because the crankshaft vibration damping belt pulley is rigidly connected with the crankshaft, the vibration and the running noise of the crankshaft shaft system can be directly transmitted to the crankshaft vibration damping belt pulley and are diffused outwards through the crankshaft vibration damping belt pulley, and in order to reduce the near-field noise of the crankshaft vibration damping belt pulley, the near-field noise of the crankshaft vibration damping belt pulley can be reduced by adopting a mode of integrally sealing the crankshaft vibration damping belt pulley and a crankshaft gear train, but the mode is very difficult to implement.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a bent axle damping belt pulley sound-proof housing, engine and vehicle for solve among the prior art problem that the near field noise of bent axle damping belt pulley is big.
In order to solve the technical problem, an embodiment of the utility model provides a following technical scheme:
an embodiment of the utility model provides a bent axle damping belt pulley sound-proof housing, include:
the sound-proof cover shell is connected with the crankshaft vibration reduction belt pulley in a matching way, and an accommodating space is formed on one side, facing the crankshaft vibration reduction belt pulley, of the sound-proof cover shell;
the sound insulation device is arranged in the accommodating space and is attached to the sound insulation cover shell;
and the sealing ring is arranged between the sound insulation cover shell and the crankshaft vibration reduction belt pulley.
Optionally, a protruding structure is arranged on a first end face, away from the crankshaft vibration reduction pulley, of the sound insulation cover shell.
Optionally, the protruding structure is disposed at a central position of the first end surface.
Optionally, a reinforcing rib is arranged on a first end face, away from the crankshaft vibration reduction pulley, of the sound insulation cover shell.
Optionally, the reinforcing ribs are uniformly arranged on the first end face.
Optionally, the crankshaft damper pulley acoustic enclosure further comprises: the buckle is arranged at the edge of the sound shield shell, which is close to the second end face of the crankshaft vibration reduction belt pulley;
the sound insulation cover shell is connected with the hub of the crankshaft vibration reduction belt pulley in a matched mode through a buckle.
Optionally, a groove is formed in the edge, close to the second end face of the crankshaft vibration reduction belt pulley, of the sound insulation cover shell, and the sealing ring is connected with the groove in a matched mode.
The embodiment of the utility model also provides an engine, including any one of the above crankshaft damping belt pulley sound-proof housing;
the engine also comprises a crankshaft vibration reduction belt pulley, wherein the projection area of the crankshaft vibration reduction belt pulley sound-proof cover on the plane where the hub of the crankshaft vibration reduction belt pulley is located is smaller than or equal to the area of the hub.
The embodiment of the utility model provides a still provide the vehicle, include as above the engine.
The utility model has the advantages that:
the utility model provides a bent axle damping belt pulley sound-proof housing, include: the sound-proof cover shell is connected with the crankshaft vibration reduction belt pulley in a matching way, and an accommodating space is formed on one side, facing the crankshaft vibration reduction belt pulley, of the sound-proof cover shell; the sound insulation device is arranged in the accommodating space and is attached to the sound insulation cover shell; the sealing washer, set up in the sound-proof housing with between the crankshaft damping belt pulley, through setting up the noise insulation in the inside of sound-proof housing casing to with the laminating of sound-proof housing casing, can absorb and completely cut off the noise of crankshaft shafting transmission, weaken the diffusion of crankshaft shafting's running noise at crankshaft damping belt pulley department, reduce crankshaft damping belt pulley's near field noise.
Drawings
FIG. 1 shows a cross-sectional view of a crankshaft vibration damping pulley acoustic enclosure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a first end face of a crankshaft vibration damping pulley acoustic enclosure according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a second end face of a crankshaft vibration damping pulley acoustic enclosure according to an embodiment of the present invention;
fig. 4 shows an assembly diagram of the crankshaft damping pulley soundproof cover and the crankshaft damping pulley provided in the embodiment of the present invention.
Description of reference numerals:
1-sound insulation cover shell; 2-a sound-proofing means; 3-sealing ring; 4-a raised structure; 5-reinforcing ribs; 6-buckling; 7-a hub; 8-a groove; 9-crankshaft damping belt pulley rubber ring; 10-inertia ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses to the big problem of bent axle damping belt pulley's near field noise among the prior art, provide a bent axle damping belt pulley sound-proof housing, engine and vehicle.
As shown in FIG. 1, the embodiment of the utility model provides a crankshaft damping belt pulley sound-proof housing, include:
the noise insulation cover comprises a noise insulation cover shell 1 and a vibration reduction belt pulley, wherein the noise insulation cover shell 1 is connected with the vibration reduction belt pulley of the crankshaft in a matched mode, and an accommodating space is formed in one side, facing the vibration reduction belt pulley of the crankshaft, of the noise insulation cover shell 1;
the sound insulation device 2 is arranged in the accommodating space and is attached to the sound insulation cover shell 1;
and the sealing ring 3 is arranged between the sound-proof housing shell 1 and the crankshaft vibration reduction belt pulley.
In this embodiment, sound-proof cover casing 1 designs for bellied swell structure, orientation one side of crankshaft damping belt pulley forms into the accommodation space, the accommodation space can be used for dodging crankshaft damping belt pulley's mounting bolt still can for noise insulation device 2 provides the installation space, and the structure of sound-proof cover casing 1 that this embodiment provided had both had good manufacturability, reliability, still had advantage with low costs.
Optionally, the soundproof cover case 1 is in a shape of arc, arch or other rounded transition shape like a convex structure.
Optionally, the acoustic insulation means 2 is acoustic wool.
Alternatively, the soundproof cover case 1 is made of a plastic or metal material.
In this embodiment, sealing washer 3 adopts rubber materials to make, has certain compressibility, installs crankshaft damping belt pulley noise-proof housing back on crankshaft damping belt pulley, sealing washer 3 compresses tightly on crankshaft damping belt pulley, with the laminating of crankshaft damping belt pulley, can be used for weakening the diffusion of noise on crankshaft damping belt.
The crankshaft damping belt pulley sound-proof housing that this embodiment provided, through setting up noise insulation 2 in sound-proof housing casing 1's inside, and with the laminating of sound-proof housing casing 1 can absorb and completely cut off the noise of crankshaft shafting transmission, improves the diffusion of crankshaft shafting's running noise in crankshaft damping belt pulley department, reduces crankshaft damping belt pulley's near field noise.
Optionally, a protruding structure 4 is disposed on a first end surface of the soundproof cover case 1 away from the crankshaft damping pulley.
Optionally, the protruding structure 4 is disposed at a central position of the first end surface.
In this embodiment, referring to fig. 2, a cross section of a first end surface of the sound-proof housing 1 away from the crankshaft vibration damping pulley is circular, and the protrusion structure 4 is disposed at a center of a circle, so as to ensure dynamic balance of the sound-proof housing of the crankshaft vibration damping pulley. Protruding structure 4 is close to the partial structure of sound-proof housing body 1 with there is the clearance in sound-proof housing body 1, the clearance can be regarded as the fulcrum that the crankshaft damping belt pulley sound-proof housing was dismantled, is convenient for the dismantlement of crankshaft damping belt pulley sound-proof housing.
Optionally, a reinforcing rib 5 is arranged on a first end face of the sound-proof cover shell 1 far away from the crankshaft vibration damping pulley.
Optionally, the reinforcing ribs 5 are arranged uniformly on the first end face.
In this embodiment, please refer to fig. 2, at least one rib 5 is disposed on a first end surface of the soundproof housing 1 away from the crankshaft damper pulley, so as to increase the rigidity and strength of the soundproof housing 1, and the number of the ribs 5 may be set according to actual requirements, which is not limited in this embodiment.
It should be noted that, under the condition that the number of the reinforcing ribs 5 is greater than or equal to two, the reinforcing ribs 5 are uniformly distributed in a matrix manner according to the central axis of the sound-proof housing 1, so as to ensure the dynamic balance of the crankshaft vibration reduction pulley sound-proof housing.
Optionally, the crankshaft damper pulley acoustic enclosure further comprises: the buckle 6 is arranged at the edge of the sound insulation cover shell 1 close to the second end face of the crankshaft vibration damping belt pulley;
the sound-proof cover shell 1 is connected with a hub 7 of the crankshaft vibration reduction belt pulley in a matching way through a buckle 6.
In this embodiment, please refer to fig. 3, a buckle 6 is disposed on an edge of the sound-proof cover housing 1 near the second end surface of the crankshaft vibration-damping pulley, the buckle 6 is connected to a hub 7 of the crankshaft vibration-damping pulley in a matching manner, the crankshaft vibration-damping pulley sound-proof cover is fixed on the crankshaft vibration-damping pulley, and an assembly diagram of the crankshaft vibration-damping pulley sound-proof cover and the crankshaft vibration-damping pulley is shown in fig. 4.
The number of the buckles 6 can be set according to actual requirements, and is not limited in the embodiment.
It should be noted that, for the fastness of guaranteeing crankshaft damping belt pulley sound-proof housing and crankshaft damping belt pulley connection, 6 quantity of buckle is 3 at least, just 6 central axis according to sound-proof housing casing 1 of buckle is matrix evenly distributed, guarantees the dynamic balance of crankshaft damping belt pulley sound-proof housing.
Optionally, the number of the buckles 6 is 4.
With reference to fig. 1, the connection between the buckle 6 and the crankshaft vibration damping pulley is designed to be a cone angle structure, which facilitates the detachment and assembly of the crankshaft vibration damping pulley soundproof cover and the crankshaft vibration damping pulley.
Optionally, a groove 8 is formed in the edge of the sound insulation cover shell 1 close to the second end face of the crankshaft vibration reduction belt pulley, and the sealing ring 3 is connected with the groove 8 in a matched mode.
In this embodiment, referring to fig. 1, a groove 8 is formed at a matching connection portion of the sound-proof housing 1 and the sealing ring 3, and a cross section of the groove 8 may be designed to be a trapezoid structure or a rectangular structure, so as to facilitate assembly of the sound-proof housing 1 and the sealing ring 3.
The embodiment of the utility model also provides an engine, including any one of the above crankshaft damping belt pulley sound-proof housing;
the engine further comprises a crankshaft vibration reduction belt pulley, wherein the projection area of the crankshaft vibration reduction belt pulley sound-proof cover on the plane where the hub 7 of the crankshaft vibration reduction belt pulley is located is smaller than or equal to the area of the hub 7.
It should be noted that the engine provided by the present embodiment includes the above-mentioned crankshaft vibration damping pulley soundproof cover, and all embodiments of the above-mentioned crankshaft vibration damping pulley soundproof cover are applicable to the engine, and can achieve the same or similar technical effects.
In this embodiment, please refer to fig. 4, the outer circle of the noise enclosure of the crankshaft damping pulley does not exceed the maximum outer circle of the hub 7 of the crankshaft damping pulley, so that the heat dissipation of the rubber ring 9 of the crankshaft damping pulley is not affected, and the noise enclosure of the crankshaft damping pulley is ensured not to contact the inertia ring 10 of the rubber ring of the crankshaft damping pulley, thereby avoiding affecting the rotational inertia of the crankshaft damping pulley.
The embodiment of the utility model provides a still provide a vehicle, include as above the engine.
It should be noted that, the vehicle provided in the present embodiment includes the above-mentioned engine, and all the embodiments of the above-mentioned engine are applicable to the vehicle, and can achieve the same or similar technical effects.
The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Claims (9)
1. A crankshaft vibration damping pulley sound-proof housing, comprising:
the noise insulation cover comprises a noise insulation cover shell (1) and a vibration insulation cover, wherein the noise insulation cover shell (1) is connected with a crankshaft vibration damping belt pulley in a matching mode, and an accommodating space is formed in one side, facing the crankshaft vibration damping belt pulley, of the noise insulation cover shell (1);
the sound insulation device (2) is arranged in the accommodating space and is attached to the sound insulation cover shell (1);
and the sealing ring (3) is arranged between the sound-proof cover shell (1) and the crankshaft vibration reduction belt pulley.
2. The noise enclosure of the crankshaft damper pulley according to claim 1, characterized in that a first end face of the noise enclosure housing (1) remote from the crankshaft damper pulley is provided with a raised structure (4).
3. The crankshaft vibration damping pulley acoustic enclosure according to claim 2, characterized in that the raised structure (4) is arranged in a central position of the first end face.
4. The noise enclosure of the crankshaft damper pulley according to claim 1, characterized in that a first end face of the enclosure housing (1) remote from the crankshaft damper pulley is provided with a reinforcement rib (5).
5. The noise enclosure of a crankshaft vibration damping pulley according to claim 4, characterized in that the ribs (5) are arranged uniformly on the first end face.
6. The crankshaft damper pulley sound enclosure of claim 1, further comprising: the buckle (6) is arranged on the edge of the sound insulation cover shell (1) close to the second end face of the crankshaft vibration damping belt pulley;
the sound-proof cover shell (1) is connected with a hub (7) of the crankshaft vibration reduction belt pulley in a matching mode through a buckle (6).
7. The noise enclosure of the crankshaft vibration damping pulley according to claim 1, wherein the edge of the noise enclosure housing (1) near the second end surface of the crankshaft vibration damping pulley is provided with a groove (8), and the sealing ring (3) is in fit connection with the groove (8).
8. An engine comprising a crankshaft damper pulley acoustic enclosure as in any of claims 1-7;
the engine also comprises a crankshaft vibration reduction belt pulley, wherein the projection area of the crankshaft vibration reduction belt pulley sound-proof cover on the plane where the hub (7) of the crankshaft vibration reduction belt pulley is located is smaller than or equal to the area of the hub (7).
9. A vehicle characterized by comprising the engine of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120130468.8U CN214248218U (en) | 2021-01-18 | 2021-01-18 | Crankshaft vibration reduction belt pulley sound-proof housing, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120130468.8U CN214248218U (en) | 2021-01-18 | 2021-01-18 | Crankshaft vibration reduction belt pulley sound-proof housing, engine and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214248218U true CN214248218U (en) | 2021-09-21 |
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ID=77750846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120130468.8U Active CN214248218U (en) | 2021-01-18 | 2021-01-18 | Crankshaft vibration reduction belt pulley sound-proof housing, engine and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214248218U (en) |
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2021
- 2021-01-18 CN CN202120130468.8U patent/CN214248218U/en active Active
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