CN201687919U - Belt pulley and engine assembly - Google Patents
Belt pulley and engine assembly Download PDFInfo
- Publication number
- CN201687919U CN201687919U CN2010201886873U CN201020188687U CN201687919U CN 201687919 U CN201687919 U CN 201687919U CN 2010201886873 U CN2010201886873 U CN 2010201886873U CN 201020188687 U CN201020188687 U CN 201020188687U CN 201687919 U CN201687919 U CN 201687919U
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- CN
- China
- Prior art keywords
- belt pulley
- wheel hub
- engine
- insulating layer
- engaging piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a belt pulley, which comprises a hub. The belt pulley further comprises a sound absorbing layer and a sound insulation layer, and the sound absorbing layer and the sound insulation layer respectively extend along two axial opposite sides of the hub. The utility model further provides an engine assembly with lower vibration noise, which comprises a crankshaft and an engine belt pulley, the front end of the crankshaft penetrates through the hub of the engine belt pulley to be fixed, and the engine belt pulley is the belt pulley of the utility model. The sound absorbing layer and the sound insulation layer which are arranged on two sides of the belt pulley can absorb and insulate vibration and noise generated by a component (such as a crankshaft) provided with the belt pulley and other components disposed nearby the belt pulley.
Description
Technical field
The utility model relates to belt pulley and engine pack.
Background technique
In order to reduce vehicle noise, need carry out vibration damping to the front end (free end) of bent axle usually.Traditional crankshaft front end vibration damping mode is at the front end of bent axle torshional vibration damper, for example rubber shock absorber, silicon oil damper and various combined type vibration damping device to be installed.Though these vibration dampers can both play vibration damping and noise reduction effect, the complex structure of these vibration dampers, and need be arranged separately in the front end of bent axle, and not only influence the operating space of bent axle, also can produce and interfere other parts.
The model utility content
The utility model provide a kind of can be to the front end vibration and noise reducing of bent axle and belt pulley simple in structure.
Belt pulley of the present utility model comprises wheel hub, and wherein, described belt pulley also comprises absorbent treatment and Sound insulating layer, and described absorbent treatment extends in the relative vertically both sides of described wheel hub respectively with described Sound insulating layer.
The utility model also provides a kind of noise lower engine pack.Engine pack of the present utility model comprises bent axle and engine belt pulley, the front end of described bent axle passes the wheel hub of described engine belt pulley and fixes, wherein, described engine belt pulley is a belt pulley of the present utility model, and the front end of described bent axle passes described wheel hub and is positioned at the side at described Sound insulating layer place.
By both sides described absorbent treatment and described Sound insulating layer are set, can absorb and completely cut off by the parts that described belt pulley is installed (for example bent axle) and be arranged on vibration and the noise that near other parts the described belt pulley produce at described belt pulley.In addition, in the both sides of described belt pulley described absorbent treatment is set and described Sound insulating layer is very convenient.
When described belt pulley is used for engine pack of the present utility model, can realize the effect of favorable damping noise reduction, and need not on engine pack, to install complicated vibration damping equipment, thereby can effectively reduce cost by described belt pulley.
Description of drawings
Fig. 1 is the schematic representation of assembly structure that shows the front end of the belt pulley of a kind of mode of execution of the present utility model and bent axle.
Embodiment
Belt pulley of the present utility model comprises wheel hub, and wherein, described belt pulley also comprises absorbent treatment 1 and Sound insulating layer 2, and absorbent treatment 1 extends in the relative vertically both sides of described wheel hub respectively with Sound insulating layer 2.
Preferably, the side at absorbent treatment 1 place is near the parts that produce vibration and/or noise, for example surface of engine gear case cover.Particularly, when belt pulley of the present utility model was assemblied on the bent axle, the side at absorbent treatment 1 place was near the gear chamber of motor, and the side at Sound insulating layer 2 places is near the front end 6 of bent axle.By this structure, absorbent treatment 1 can absorb by the crankshaft torsional vibrations of motor, curved shake and gear engagement etc. from the noise of the surface emissivity of engine gear case cover.In addition, Sound insulating layer 2 can stop the radiation that is not absorbed noise, can reduce the three-dimensional vibrating of crankshaft front end 6 simultaneously.
As shown in Figure 1, absorbent treatment 1 extends in the relative vertically both sides of described wheel hub respectively with Sound insulating layer 2, promptly extends on two relative vertically side surfaces of described wheel hub.
Wherein, absorbent treatment 1 is made by the various materials that are suitable for absorbing noise.Preferably, absorbent treatment 1 by porous material for example foamed plastics, softboard, flax board, compression glass silk floss, felt make, thereby when sound wave incides porous material, cause the air vibration in the hole of porous material.Because the viscous resistance of friction and air makes a part of acoustic energy be transformed into heat energy.In addition, air in the hole and the transmission of heat between the hole wall also can cause thermal loss, make sound energy attenuation.
Sound insulating layer 2 can be made by the various materials that are suitable for isolated noise, thereby can consume the energy of sound waves by Sound insulating layer 2, acoustic energy is stopped in the propagation path and can not directly pass through.Preferably, Sound insulating layer 2 can be made by sheet metal (for example steel plate, stereotype, composite damping steel plate), thereby can reduce cost when playing deadening.
Absorbent treatment 1 and Sound insulating layer 2 can select suitable Placement to be fixed on the respective side of described wheel hub according to its material.For example, make by foamed plastics and Sound insulating layer 2 when making, can make absorbent treatment 1 be fixed on a side of described wheel hub, and make Sound insulating layer fastening, bonding or be weldingly fixed on the opposite side of described wheel hub by Bond by steel plate when absorbent treatment 1.
In addition, play good sound absorption, defening effect, can make absorbent treatment 1 and Sound insulating layer 2 cover the surface of the relative vertically both sides of described wheel hub respectively in order to make absorbent treatment 1 and Sound insulating layer 2.
Preferably, in order further to realize vibration and noise reducing, as shown in Figure 1, and radially inside along described wheel hub, described wheel hub has band engaging piece 3, flexible engaging portion 4 and assembly department 5, and flexible engaging portion 4 is fixedlyed connected with assembly department 5 with band engaging piece 3 respectively.
Wherein, band engaging piece 3 is used for and driving belt engagement, and assembly department 5 is used for driving whole wheel hub with bent axle assembling and the rotation by bent axle, thereby makes described belt pulley running.Owing to be provided with flexible engaging portion 4 between band engaging piece 3 and the assembly department 5, thus can by the elastic buffer effect of flexible engaging portion 4 further reduce bent axle torsional oscillation, curved shake and prevent thus the noise that produces to the external radiant of described belt pulley.
Flexible engaging portion 4 can be made by various suitable elastic material, for example rubber or resin material.According to different materials, can select suitable Placement that flexible engaging portion 4 is individually fixed in band engaging piece 3 and assembly department 5.Preferably, flexible engaging portion 4 is made by rubber and 5 sulfurations are connected with assembly department with band engaging piece 3 respectively, thereby can when further playing the vibration and noise reducing effect, guarantee Elastic Meshing portion 4 and be with firm being connected between engaging piece 3 and the assembly department 5, make described wheel hub have enough intensity as a whole by flexible engaging portion 4.
For vibration and noise reducing as far as possible, band engaging piece 3 and assembly department 5 can engage with flexible engaging portion 4 by the total inner surface of band engaging piece 3 and the whole outer surface of assembly department 5 respectively.In other words, band engaging piece 3 and assembly department 5 are sheathed by flexible engaging portion 4, make flexible engaging portion 4 as the whole separating surface of being with engaging piece 3 and assembly department 5.Selectively, the internal surface of band engaging piece 3 and the outer surface of assembly department 5 are partly engaged with flexible engaging portion 4 separately, and make band engaging piece 3 directly be connected (for example welding) by the internal surface of band engaging piece 3 and the remaining part of the outer surface of assembly department 5 with assembly department 5.In addition, also can make band engaging piece 3 and assembly department 5 integrally formed, and form the receiving groove that holds flexible engaging portion 4 between band engaging piece 3 and assembly department 5, rubber material forms flexible engaging portion 4 by for example pouring into a mould then.
Preferably, in order to increase the join strength between band engaging piece 3 and assembly department 5 and the flexible engaging portion 4, the internal surface of band engaging piece 3 and/or the outer surface of assembly department 5 can have projection and/or depression.Particularly, can make the internal surface of band engaging piece 3 have projection and/or depression, also can make the outer surface of assembly department 5 can have projection and/depression, can also make band engaging piece 3 internal surface and or the outer surface of assembly department 5 all have projection and/depression.
More preferably, described projection and/or depression extend axially along described wheel hub, thereby strengthen the join strength between engaging piece 3 and assembly department 5 and the flexible engaging portion 4 vertically.
In addition, can make the outer surface of band internal surface of engaging piece 3 and assembly department 5 have the projection and the depression of form fit.For example, the internal surface of band engaging piece 3 and the outer surface of assembly department 4 have the wave heave and the depression of coupling, this wave heave and depression are extended (being that uniform section extends) vertically, and the flexible engaging portion 4 between the outer surface of the internal surface of being with engaging piece 3 and assembly department 4 also has corresponding waveform.By the waveform of these couplings, can increase the surface of contact between flexible engaging portion 4 and band engaging piece 3 and the assembly department 5, and thereby increase the join strength of flexible engaging portion 4 with band engaging piece 3 and assembly department 5.Because Fig. 1 is the sectional view that intercepts vertically, fail to demonstrate described projection and depression, but what can imagine is that if observe from axial direction, the peripheral profile of band engaging piece 3 and assembly department 5 can present irregular circle.During installation, can earlier flexible engaging portion 4 be fixed on the outer surface of assembly department 5 and flexible engaging portion 4 and this outer surface are fixed, to assemble (elasticity of flexible engaging portion 4 can make this assembly process carry out smoothly) vertically with engaging piece 3 then, and make flexible engaging portion 4 be with between engaging piece 3 and the assembly department 5 and have corresponding waveform.At last flexible engaging portion 4 is fixedly connected on the internal surface of band engaging piece 3, for example connects by sulfuration.Described sulfuration connection is meant and utilizes the crosslinked action of rubber in sulfidation that rubber is fixedly attached on the object that is in contact with it.
In addition, the internal surface of band engaging piece 3 and the outer surface of assembly department 5 can all have at least one projection, also can all have at least one depression.But answering the part protruded most on the internal surface of retaining belt engaging piece 3 can be just to contact with the part of protruding most of the outer surface of assembly department 5 at least, is preferably Spielpassung, thereby is convenient to install.During installation, on the same outer surface that earlier flexible engaging portion 4 is fixed on assembly department 5 and flexible engaging portion 4 and this outer surface are fixed, to assemble (elasticity of flexible engaging portion 4 can make this assembly process carry out smoothly) with engaging piece 3 vertically then, thereby flexible engaging portion 4 parts corresponding to the part of protruding most of the outer surface of band internal surface of engaging piece 3 and assembly department 5 are pressed on the outer surface of the internal surface of band engaging piece 3 and assembly department 5, at last flexible engaging portion 4 is fixedly connected on the internal surface of band engaging piece 3, for example sulfuration.This mode of execution has further been strengthened join strength between band engaging piece 3 and assembly department 5 and the flexible engaging portion 4 by the pressuring action of flexible engaging portion 4.
Wherein, the integral thickness of flexible engaging portion 4 only has 3-5mm, and projection and depression also have only 0.5-1mm along the size of thickness direction.
Projection above and depression are all for the cylindric internal surface or outer surface that do not form projection and depression, rather than the fluctuating of the surface topography of this internal surface and outer surface.For example, as long as the internal surface of band engaging piece 3 has the part of recessed its imaginary cylindric internal surface, this part is depression, on the contrary the projection of being.In addition, if the part of the internal surface of engaging piece 3 has depression, the part that does not then have depression promptly is the described part of protruding most with respect to this depression.
In addition, as shown in Figure 1, at least a portion of the outer surface of band engaging piece 3 has the profile of tooth with the driving belt engagement.According to the profile of tooth of driving belt, the profile of tooth of band engaging piece 3 can be triangle, rectangle or other suitable shape, as long as can mesh to realize the belt pulley transmission with driving belt.In addition, in order to increase transmission capacity, can make the whole outer surface of band engaging piece 3 all have the profile of tooth that meshes with driving belt.
Engine pack of the present utility model comprises bent axle and engine belt pulley, and the front end 6 of bent axle passes the wheel hub of described engine belt pulley and fixes, and wherein, described engine belt pulley is a belt pulley of the present utility model.Particularly, can make the front end 6 of bent axle pass described wheel hub and be positioned at the side at Sound insulating layer 2 places.As shown in Figure 1, the front end 6 of bent axle passes described wheel hub from the side at absorbent treatment 1 place, and is fixed on the described wheel hub by fastening piece (for example threaded piece), makes the front end 6 of bent axle be positioned at the side at Sound insulating layer 2 places.
Be positioned at the side at Sound insulating layer 2 places by the front end 6 that makes bent axle, the torsional oscillation of bent axle, curved shaking are reduced by belt pulley, absorb noise, by Sound insulating layer 2 further isolated noises with reduce vibration, to reduce to external engine radiation noise by absorbent treatment 1.
The assembling of engine belt pulley and bent axle can be adopted the mode of well known to a person skilled in the art, for example by fastening piece bent axle is fixed in the fastener hole on the wheel hub, does not elaborate at this.
When the torsional oscillation of bent axle, curved shake and when being positioned near bent axle, the engine belt pulley other parts and producing vibration and/or noise, engine pack of the present utility model can absorb by the absorbent treatment 1 and the Sound insulating layer 2 of described belt pulley, isolated noise, thereby described engine pack is played the effect of vibration and noise reducing.Engine pack of the present utility model is simple in structure, cost is lower.
Though the binding engine assembly has illustrated the structure and the vibration and noise reducing principle of belt pulley of the present utility model, belt pulley of the present utility model not only is used for motor, can also be used for the various rotation gearings that need vibration and noise reducing.
In addition, though passed through with reference to description of drawings preferred implementation of the present utility model, each parts in the mode of execution can combination in any.In addition, the mounting type of each parts and position can adjust as required, and are not limited to the shown special type of accompanying drawing.Various modifications, change and replacement that those skilled in the art can understand all fall in the protection domain of the present utility model.
Claims (10)
1. belt pulley, this belt pulley comprises wheel hub, it is characterized in that, and described belt pulley also comprises absorbent treatment (1) and Sound insulating layer (2), and described absorbent treatment (1) extends in the relative vertically both sides of described wheel hub respectively with described Sound insulating layer (2).
2. belt pulley according to claim 1 is characterized in that, when described belt pulley was installed on the front end (6) of engine crankshaft, the front end of engine crankshaft (6) passed described wheel hub and is positioned at the side at described Sound insulating layer (2) place.
3. belt pulley according to claim 1 is characterized in that, described absorbent treatment (1) is made by foamed plastics.
4. belt pulley according to claim 1 is characterized in that, described Sound insulating layer (2) is made by sheet metal.
5. belt pulley according to claim 1 is characterized in that, described absorbent treatment (1) and described Sound insulating layer (2) cover the surface of the relative vertically both sides of described wheel hub respectively.
6. according to any described belt pulley among the claim 1-5, it is characterized in that, radially inside along described wheel hub, described wheel hub has band engaging piece (3), flexible engaging portion (4) and assembly department (5), and described flexible engaging portion (4) is fixedlyed connected with described assembly department (5) with described band engaging piece (3) respectively.
7. belt pulley according to claim 6 is characterized in that, described flexible engaging portion (4) is made by rubber and sulfuration is connected with described assembly department (5) with described band engaging piece (3) respectively.
8. belt pulley according to claim 6 is characterized in that, the outer surface of the internal surface of described band engaging piece (3) and/or described assembly department (5) has projection and/or depression.
9. belt pulley according to claim 8 is characterized in that, described projection and/or depression extending axially along described wheel hub.
10. engine pack, this engine pack comprises bent axle and engine belt pulley, the front end of described bent axle (6) passes the wheel hub of described engine belt pulley and fixes, and it is characterized in that, described engine belt pulley is any described belt pulley among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201886873U CN201687919U (en) | 2010-05-07 | 2010-05-07 | Belt pulley and engine assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201886873U CN201687919U (en) | 2010-05-07 | 2010-05-07 | Belt pulley and engine assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687919U true CN201687919U (en) | 2010-12-29 |
Family
ID=43376199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201886873U Expired - Fee Related CN201687919U (en) | 2010-05-07 | 2010-05-07 | Belt pulley and engine assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489747A (en) * | 2017-08-10 | 2017-12-19 | 安徽江淮汽车集团股份有限公司 | A kind of mounting structure of bent axle and crank pulley |
-
2010
- 2010-05-07 CN CN2010201886873U patent/CN201687919U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489747A (en) * | 2017-08-10 | 2017-12-19 | 安徽江淮汽车集团股份有限公司 | A kind of mounting structure of bent axle and crank pulley |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20180507 |