CN204041764U - A kind of constant velocity universal joint sheath - Google Patents
A kind of constant velocity universal joint sheath Download PDFInfo
- Publication number
- CN204041764U CN204041764U CN201420419109.4U CN201420419109U CN204041764U CN 204041764 U CN204041764 U CN 204041764U CN 201420419109 U CN201420419109 U CN 201420419109U CN 204041764 U CN204041764 U CN 204041764U
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- joint
- sheath
- universal joint
- constant velocity
- velocity universal
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- 230000009467 reduction Effects 0.000 claims description 4
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- 239000000314 lubricant Substances 0.000 abstract description 6
- 238000005461 lubrication Methods 0.000 abstract description 6
- 208000002925 dental caries Diseases 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 241000168254 Siro Species 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 208000025962 Crush injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Diaphragms And Bellows (AREA)
Abstract
The utility model provides a kind of constant velocity universal joint sheath, comprise sheath body, axostylus axostyle joint and universal joint joint, axial in corrugated extended structure along it from sheath body described in axostylus axostyle joint to universal joint joint, axostylus axostyle joint comprises outer joint and interior joint, storage cavity is provided with between outer joint and interior joint, the inwall of interior joint is provided with vent, and the cavity of described storage cavity with described sheath body is connected by vent.Vent can ensure that the lubrication environment of two cavitys and air moment keep unimpeded, store cavity and temporarily store lubricant oil, storing cavity can the swell increment of cavity of balanced sheath body and decrement, causes sheath to wear and tear and the generation of the failure modes such as abnormal sound that rub to interfere with its its Surrounding Parts after avoiding sheath abnormal expansion, to collide; What alleviate sheath body cavity sends out degree flat, reduces the probability of happening of crest and crest, friction phenomenon between trough and trough, to ensure quality and the NVH performance of car load.
Description
Technical field
The utility model relates to a kind of constant velocity universal joint sheath, belongs to automobile dustproof guard technology field.
Background technique
Along with people are to the continuous lifting of automobile product perception, Consumer to car load quality and NVH (Noise, Vibration, Harshness, i.e. noise, vibration and sound vibration roughness) performance requirement strict all the more.Constant velocity universal joint is the vitals in car drivetrain system, and its effect is that the power of motor is delivered to two front wheels from speed changer, drives car to run at high speed; And constant velocity universal joint sheath (i.e. dust-proof cover) parts that to be in constant velocity universal joint product one crucial, Main Function is to prevent dust from entering in constant velocity universal joint and preventing the butter in constant velocity universal joint from flowing out.
In prior art, in constant velocity universal joint sheath with in axostylus axostyle slipping, sometimes be subnormal ambient in the cavity that constant velocity universal joint and constant velocity universal joint sheath are formed, thus cause the crest of constant velocity universal joint sheath and crest, friction between trough and trough aggravates, and produces the problem of friction abnormal sound; Sometimes by the impact of hot environment, constant velocity universal joint sheath swell increment is increased, and excessive swell increment is easy to cause constant velocity universal joint sheath and its Surrounding Parts to produce and rubs, thus reduce performance and the working life of constant velocity universal joint sheath, even directly damage constant velocity universal joint sheath.And along with the High Rotation Speed of drive shaft assembly, and under constant velocity universal joint sheath is in the environment of high temperature, grease in constant velocity universal joint sheath is diluted and is thrown away, enter this sheath inner, damaged constant velocity universal joint sheath and easily occur oil leakage phenomenon, not only destroy the lubrication environment of axostylus axostyle and constant velocity universal internode, reduce the working life of axostylus axostyle or constant velocity universal joint, also likely will pollute other component around.
Moreover, constant velocity universal joint sheath and axostylus axostyle generally mainly realize axial limiting by larger clip clamping force, constant velocity universal joint sheath is in axostylus axostyle wide-angle, Long travel slipping, this axle sleeve may produce axially displaced, causes the crest of this sheath and crest, friction between trough and trough aggravates; And slipping in constant velocity universal joint sheath cavity process at axostylus axostyle, side sheath and constant velocity universal joint housing also may produce and collide with, and cause constant velocity universal joint sheath and break and the problem of leakage of oil.
Under normal circumstances, constant velocity universal joint sheath generally adopts CR material, and it is low that it has high-temp plastic, and anti-stone hits the shortcoming of poor performance.
In addition, in order to the incidence rate that the first trough and constant velocity universal joint end that reduce constant velocity universal joint sheath collide with, both joints generally adopt the structural type thickening sheath wall thickness, and this kind of structure very easily causes the first trough of constant velocity universal joint sheath to be squeezed wound by the end face of constant velocity universal joint when mounted, the failure mode that constant velocity universal joint sheath crushes injury effectively can not be evaded.When arrangement angle is larger, constant velocity universal joint sheath slips into axostylus axostyle and skids off in process, first trough of constant velocity universal joint sheath repeatedly contacts with constant velocity universal joint end face, rubs, the damaged probability of constant velocity universal joint sheath increases greatly, and along with the increase of constant velocity universal joint sheath end wall thickness, the gap of constant velocity universal joint sheath and all edge pieces component reduces, thus add the little problem in gap between live axle and speed changer, very easily cause the interference between constant velocity universal joint sheath and its surrounding components and friction.
In a word, in prior art, the slippage of constant velocity universal joint sheath increases gradually, and by the impact of arrangement angle, the crest of constant velocity universal joint sheath and crest, friction between trough and trough aggravate, thus, constant velocity universal joint sheath is with in axostylus axostyle slipping, very easily produce displacement, collide with, send out flat, rub the Problem of Failure such as abnormal sound, have a strong impact on car load quality and NVH performance, especially the above-mentioned phenomenon of internal spherical cage is more serious.
Model utility content
The utility model provides a kind of constant velocity universal joint sheath, can solve in the slipping of constant velocity universal joint sheath with axostylus axostyle, crest and crest, friction between trough and trough aggravate, constant velocity universal joint sheath itself is easily collided with, send out flat, the Problem of Failure of friction abnormal sound, can ensure kind and the NVH performance of car load.
For solving the problems of the technologies described above, the utility model provides a kind of constant velocity universal joint sheath, comprise sheath body, axostylus axostyle joint and universal joint joint, axial in corrugated extended structure along it to the described sheath body of described universal joint joint from described axostylus axostyle joint, described axostylus axostyle joint comprises two joints, be respectively outer joint and interior joint, storage cavity is provided with between described outer joint and interior joint, the inwall of described interior joint is provided with vent, and the cavity of described storage cavity with described sheath body is connected by described vent.
Further, the inwall of described interior joint is saw tooth structure.
Further, the cavity inner circumferential of described sheath body is provided with internal projection, and between the first trough that described internal projection is located at universal joint joint place and universal joint joint, the housing end face of described internal projection and constant velocity universal joint is oppositely arranged.
Further, described internal projection is tooth form structure.
Further, described sheath body is the sheath body containing noise reduction material.
Further, from described interior joint and described universal joint joint, described sheath body is the reducing corrugated extended structure that diameter becomes large gradually.
In constant velocity universal joint sheath provided by the utility model, axostylus axostyle and sheath and between sheath and constant velocity universal joint, define a seal chamber, constant velocity universal joint is in the lubrication environment of lubricating grease in this seal chamber, wherein, constant velocity universal joint sheath described in the utility model and axostylus axostyle link position place are provided with two joints, formed between two joints and store cavity, the inwall of interior joint is provided with vent, storage cavity is connected with the cavity of sheath body by vent, vent can ensure that the lubrication environment of two cavitys and air moment keep unimpeded, when live axle is in High Rotation Speed or/and when being in hot environment, the lubricant oil be thrown out of from constant velocity universal joint can enter in this storage cavity by this vent, temporary transient storage lubricant oil.When constant velocity universal joint sheath is with in the slipping of axostylus axostyle, the cavity of sheath body can be made to expand or send out flat; When the swell increment of the cavity of sheath body is larger, and store cavity can the swell increment of cavity of balanced sheath body, to interfere with its its Surrounding Parts after avoiding constant velocity universal joint sheath abnormal expansion, to collide the wearing and tearing causing constant velocity universal joint and the generation rubbing the failure modes such as abnormal sound; When the cavity of sheath body is sent out flat, the partial air stored in cavity will flow in the cavity of sheath body, thus alleviate sheath body cavity send out degree flat, thus reduce the probability of happening of crest and crest, friction between trough and trough and the abnormal sound phenomenon that rubs, to ensure quality and the NVH performance of car load.
The zigzag structure of interior joint inwall can prevent constant velocity universal joint sheath from moving axially, and plays buffer function, to reduce the risk that constant velocity universal joint sheath is torn.
The circumference of the universal joint joint of the position relative with the end face of constant velocity universal joint adopts tooth form internal projection structure, when can prevent constant velocity universal joint sheath from slipping into action with axostylus axostyle, constant velocity universal joint sheath is compressed by transition and causes the first trough herein repeatedly directly to contact with constant velocity universal joint end face, thus avoids the generation of broken invalid problem herein.
Constant velocity universal joint sheath adopts noise reduction material effectively can reduce the noise of whole constant velocity universal joint sheath.
The variable-diameter structure of constant velocity universal joint sheath can reduce the friction between constant velocity universal joint sheath itself, solve the fricative abnormal sound problem of constant velocity universal joint sheath itself further, the little problem of speed changer or the gap between other its Surrounding Parts and constant velocity universal joint can also be solved.
Accompanying drawing explanation
Fig. 1 is the vertical section structure schematic diagram of the utility model embodiment internal spherical cage sheath;
Fig. 2 is that in Fig. 1, in internal spherical cage sheath, label is the structure for amplifying schematic diagram at E place;
Structural representation when Fig. 3 is the installing and using of internal spherical cage sheath in Fig. 1.
Wherein:
1. sheath, 2. internal spherical cage, 3. axostylus axostyle, 4. the first clip, 5. the second clip, 6. the 3rd clip;
11. outer joints, 12. store cavity, joint in 13., 14. sheath bodies, 15. tooth form internal projection, 16. ball cage joints, 17. vents, 18. zigzag fashion inwalls;
21. internal spherical cage housing end faces, 22. 3 pin joints.
Embodiment
Enumerate a specific embodiment below in conjunction with accompanying drawing to set forth further the utility model.
The present embodiment provides a kind of constant velocity universal joint sheath, as shown in Figure 1, comprise sheath body 14, axostylus axostyle joint and universal joint joint, axial in corrugated extended structure along it to the sheath body 14 of universal joint joint from axostylus axostyle joint, axostylus axostyle joint comprises outer joint 11 and interior joint 13 two joints, as shown in Figure 2, be provided with between outer joint 11 and interior joint 13 and store cavity 12, the inwall of interior joint 13 is provided with vent 17, and storage cavity 12 is connected with the cavity of sheath body 14 by vent 17.
In the present embodiment, as shown in Figure 1-Figure 3, vent 17 can ensure to store the moment between cavity 12 and the cavity of sheath body and keeps the unimpeded of lubrication environment and air; When live axle is in High Rotation Speed or/and when being in hot environment, the lubricant oil be thrown out of from constant velocity universal joint can be entered in storage cavity 12 by vent 17, temporarily stores lubricant oil; In the slipping of sheath 1 with axostylus axostyle 3, the cavity of sheath body 14 can be made to expand or send out flat, when the swell increment of the cavity of sheath body 14 is larger, air in sheath body 14 cavity will be flow into by vent 17 and store in cavity 12, with the swell increment of balanced sheath body 14 cavity, sheath is caused to wear and tear and the generation of the failure modes such as abnormal sound that rub to interfere with its its Surrounding Parts after avoiding sheath body 14 prerequisite abnormal expansion, to collide; When sheath body 14 cavity is sent out flat, time in chamber in negative pressure state, the partial air stored in cavity 12 will flow in the cavity of sheath body 14, thus alleviate sheath body 14 cavity send out flat degree, the probability of happening of minimizing crest and crest, friction phenomenon between trough and trough.
In the present embodiment, constant velocity universal joint, for triadius type internal spherical cage, accordingly, for internal spherical cage sheath (hereinafter referred to as sheath 1), is enumerated an optimum embodiment and is further elaborated the utility model.
As shown in Figure 1, sheath 1 described in the present embodiment comprises sheath body 14, axostylus axostyle joint and ball cage joint 16, axial in corrugated extended structure along it to ball cage joint 16 sheath body 14 from axostylus axostyle joint, axostylus axostyle joint comprises outer joint 11 and interior joint 13 two joints, as shown in Figure 2, a storage cavity 12 is provided with between outer joint 11 and interior joint 13, the inwall of interior joint 13 is provided with vent 17, and storage cavity 12 is connected with the cavity of sheath body 14 by vent 17.First clip 4 is by outer joint 11 and axostylus axostyle compact siro spinning technology, second clip 5 is by interior joint 13 and axostylus axostyle compact siro spinning technology, 3rd clip 6 is by ball cage joint 16 and internal spherical cage 2 compact siro spinning technology, sheath 1 and axostylus axostyle, internal spherical cage are formed a seal chamber by the first clip 4 and the 3rd clip 6, and this seal chamber is divided into two cavitys by the second clip 5, namely store cavity 12 and sheath body cavity, two cavitys are communicated with by vent 17.The advantage of this kind of structure is shown in foregoing description, does not repeat them here.
In the present embodiment, for preventing sheath 1 from relative to axostylus axostyle 3, axial relative movement occurring, the inwall of interior joint 13 is set to zigzag fashion inwall 18, and zigzag fashion inwall 18 can also play the effect of buffering, to reduce the risk that sheath 1 is torn; In order to the sheath 1 that makes is larger relative to the anti-skid factor between axostylus axostyle 3, can be set as with zigzag fashion inwall 18 axostylus axostyle 3 corresponding position coordinated that contacts the zigzag structure be meshed with the tooth form of zigzag fashion inwall 18.
In the present embodiment, sheath body 14 cavity internal spherical cage joint 16 and be circumferentially with tooth form internal projection 15 between first wave paddy herein, this tooth form internal projection 15 and internal spherical cage housing end face 21 are oppositely arranged, as shown in figures 1 and 3; This kind of structure, when sheath 1 slides to internal spherical cage 2 with axostylus axostyle 3, sheath 1 is squeezed, tooth form internal projection 15 directly will contact internal spherical cage housing end face 21, the first trough that instead of sheath body 14 directly contacts with internal spherical cage housing end face 21, effectively avoids the first trough herein to occur the generation of broken invalid phenomenon owing to being repeatedly squeezed, rubbing; This kind of structure, even if the angle that car load is arranged is larger, without the need to increasing the wall thickness of sheath 1, just can reduce the incidence rate that the first trough of sheath 1 and internal spherical cage housing end face 21 collide, avoid this trough to crush injury, and can space be saved, for the component around sheath 1 provide sufficient gap, be convenient to the installation of sheath 1, avoid sheath 1 and its surrounding components to interfere and the generation of friction phenomenon.
In the present embodiment, in order to reduce whole sheath 1 noise produced in the course of the work further, sheath adopts noise reduction material.
In order to reduce the friction and the abnormal sound that rubs that produce in the trough of sheath and the mutual extrusion process of trough, crest and crest further, from interior joint 13 to ball cage joint 16, sheath body 14 is the reducing corrugated extended structure that diameter becomes large gradually, as shown in figures 1 and 3, this structure can also provide larger gap for speed changer or between other its Surrounding Parts and internal spherical cage 2, reduces the generation of the interference friction phenomenon between each adjacent zeros parts.In addition, the sheath 1 of reducing corrugated extended structure, not only can increase the tensile elongation of sheath 1, stretching requirement to sheath when meeting large angle pendulum, can also installing space be saved, the peak of adjacent peaks is staggered, the minimum point of adjacent trough is staggered, avoid crest and crest, direct contact friction between trough and trough, thus extend the working life of sheath.
In the present embodiment, sheath 1 can ensure in the slipping of constant velocity universal joint sheath with axostylus axostyle, reduce swell increment and the decrement of sheath body cavity, thus reduce the incidence rate of crest and crest, collision between trough and trough, friction and the abnormal sound phenomenon that rubs, reduce the damage percentage of sheath, thus extend working life of sheath 1, reduce changing the outfit and engineering time and expense of sheath 1, provide cost savings; This sheath 1 decreases the generation of oil leakage phenomenon, ensure that lubricant oil not easily throws away outside the seal chamber of this sheath, make to be in all the time coordinating between axostylus axostyle 3 with internal spherical cage 2 among good lubrication environment and work, the working life of axostylus axostyle and ball cage can be extended, ensure quality and the NVH performance of car load, ensure comfort and the Safety performance of car load.
Certainly, the utility model also may be used for the constant velocity universal joint of other structures, such as six bead internal spherical cages, and external ball cage etc.Wherein, the structure of six bead internal spherical cage sheaths and the internal spherical cage sheath described in the present embodiment is exactly the same, does not repeat them here; With the axostylus axostyle be connected compared with the relative angular displacement between internal spherical cage and linear displacement, relative angular displacement between the axostylus axostyle be connected and external ball cage and linear displacement less, therefore external ball cage sheath also can adopt this kind of structure, also can adopt the further optimal technical scheme described in other described in the utility model, also repeat no more at this.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.
Claims (6)
1. a constant velocity universal joint sheath, comprise sheath body (14), axostylus axostyle joint and universal joint joint, axial in corrugated extended structure along it from sheath body (14) described in described axostylus axostyle joint to described universal joint joint, it is characterized in that: described axostylus axostyle joint comprises two joints, be respectively outer joint (11) and interior joint (13), be provided with between described outer joint (11) and interior joint (13) and store cavity (12), the inwall of described interior joint (13) is provided with vent (17), the cavity of described storage cavity (12) with described sheath body (14) is connected by described vent (17).
2. constant velocity universal joint sheath according to claim 1, is characterized in that: the inwall of described interior joint (13) is saw tooth structure.
3. constant velocity universal joint sheath according to claim 1 and 2, it is characterized in that: the cavity inner circumferential of described sheath body (14) is provided with internal projection, between the first trough that described internal projection is located at universal joint joint place and universal joint joint, the housing end face of described internal projection and constant velocity universal joint is oppositely arranged.
4. constant velocity universal joint sheath according to claim 3, is characterized in that: described internal projection is tooth form structure.
5. constant velocity universal joint sheath according to claim 4, is characterized in that: the sheath body that described sheath body (14) is noise reduction material.
6. constant velocity universal joint sheath according to claim 5, is characterized in that: from described interior joint (13) to described universal joint joint, and described sheath body (14) becomes large reducing corrugated extended structure gradually for diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419109.4U CN204041764U (en) | 2014-07-28 | 2014-07-28 | A kind of constant velocity universal joint sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419109.4U CN204041764U (en) | 2014-07-28 | 2014-07-28 | A kind of constant velocity universal joint sheath |
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| Publication Number | Publication Date |
|---|---|
| CN204041764U true CN204041764U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420419109.4U Expired - Fee Related CN204041764U (en) | 2014-07-28 | 2014-07-28 | A kind of constant velocity universal joint sheath |
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| Country | Link |
|---|---|
| CN (1) | CN204041764U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351381A (en) * | 2015-12-15 | 2016-02-24 | 天津市环宇橡塑股份有限公司 | CVJ dust cover arranged at drive shaft expansion end and having eight-crest structure |
| CN113819152A (en) * | 2021-08-30 | 2021-12-21 | 岚图汽车科技有限公司 | Boot and universal joint drive assembly of compact constant velocity universal joint |
-
2014
- 2014-07-28 CN CN201420419109.4U patent/CN204041764U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351381A (en) * | 2015-12-15 | 2016-02-24 | 天津市环宇橡塑股份有限公司 | CVJ dust cover arranged at drive shaft expansion end and having eight-crest structure |
| CN113819152A (en) * | 2021-08-30 | 2021-12-21 | 岚图汽车科技有限公司 | Boot and universal joint drive assembly of compact constant velocity universal joint |
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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 |
Granted publication date: 20141224 |