CN110486468B - Dustproof construction and shield of car transmission shaft stiff end - Google Patents
Dustproof construction and shield of car transmission shaft stiff end Download PDFInfo
- Publication number
- CN110486468B CN110486468B CN201910827045.9A CN201910827045A CN110486468B CN 110486468 B CN110486468 B CN 110486468B CN 201910827045 A CN201910827045 A CN 201910827045A CN 110486468 B CN110486468 B CN 110486468B
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- CN
- China
- Prior art keywords
- transmission shaft
- framework
- outer ring
- inner ring
- plastic body
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 80
- 238000010276 construction Methods 0.000 title description 3
- 239000004033 plastic Substances 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000007157 ring contraction reaction Methods 0.000 claims abstract description 12
- 239000000428 dust Substances 0.000 claims description 19
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 14
- 230000008602 contraction Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 25
- 230000032683 aging Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
- F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
- F16B2/24—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal
- F16B2/241—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal of sheet metal
- F16B2/245—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal of sheet metal external, i.e. with contracting action
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
Abstract
The invention aims to provide a dustproof structure of a fixed end of an automobile transmission shaft. The dustproof structure has good dustproof sealing performance, and meanwhile, the dustproof cover is easy to press into the end part of the transmission shaft, so that the dustproof structure is low in assembly difficulty and good in economical efficiency. Correspondingly, the invention also aims to provide a dustproof cover which has good sealing performance and is easy to press in the end part of the transmission shaft, and the dustproof cover comprises an integrally formed plastic body; the plastic body comprises an inner ring, an outer ring and an annular connecting part for connecting the root parts of the inner ring and the outer ring; an end cover is arranged at the top of the inner ring; the outer ring is firstly shrunk inwards from the root part to the top part and then flared outwards to form a shrinking section and a flaring section; a metal framework is arranged inside the plastic body; correspondingly, the metal framework comprises an inner ring framework, an outer ring contraction section framework and a connecting part framework; the top of outer lane shrink section skeleton is equipped with a set of notch along circumference to form the elasticity clamping piece between two adjacent notches.
Description
Technical Field
The invention relates to the technical field of automobile transmission shafts, in particular to a dustproof structure and a dustproof cover at the fixed end of an automobile transmission shaft.
Background
The transmission shaft is a high-rotating-speed and low-bearing rotating body and generally comprises three parts, namely a shaft tube, a telescopic sleeve and a universal joint. The transmission shaft is an important part for transmitting power in an automobile transmission system, and the transmission shaft, a gearbox and a drive axle are used for transmitting the power of an engine to wheels so that an automobile generates driving force. The transmission shaft of car is the important protection point of car, and the dustproof sealing of car transmission shaft is the important guarantee of car transmission shaft effective operation and life-span, so the tip of transmission shaft need set up the shield and protect.
Chinese patent 201721810765.7 discloses a car transmission shaft shield, including sealing ring, the portion of borduring and end cover, the portion cladding of borduring is at the tip edge of transmission shaft, inside the inboard edge of the portion of borduring stretches into the transmission shaft, and with the inner wall of transmission shaft is hugged closely, the outside edge of the portion of borduring is hugged closely with the outer wall of transmission shaft, the sealing ring cover is established on the outer wall of transmission shaft, just the sealing ring with the portion sealing connection of borduring, the end cover inlays the dress and is in the inside of transmission shaft, just the end cover outer peripheral edges with the inboard edge sealing connection of the portion of borduring. The sealing ring is in interference fit with the transmission shaft. The sealing ring is made of an elastic material. The sealing ring, the edge wrapping part and the end cover are of an integrally formed structure. The automobile transmission shaft shield of this patent is through setting up the portion cladding of borduring at the tip edge of transmission shaft, and the outer wall of transmission shaft covers through the sealing ring and seals, and the inside of transmission shaft seals up the cladding through the end cover, and it is whole can realize totally sealed to the transmission shaft tip, prevents to lead to the transmission shaft dustproof not tight to guarantee the effective operation and the life-span of automobile transmission shaft. The automobile transmission shaft dustproof cover with the structural design achieves a good dustproof sealing effect, but when the automobile transmission shaft dustproof cover is assembled into a shaft, the requirement on positioning accuracy is very high, the situation that the automobile transmission shaft dustproof cover cannot be pressed in due to slight deviation can occur, the dustproof cover is damaged by pressing, a new dustproof cover can be used for pressing in again, and the economical efficiency is improved.
Disclosure of Invention
The invention aims to provide a dustproof structure of a fixed end of an automobile transmission shaft. In the dustproof structure, the dustproof sealing performance is good, and meanwhile, the dustproof cover is easy to press in, low in assembly difficulty and good in economy. Correspondingly, the invention also aims to provide the dustproof cover which has good sealing performance and is easy to press in the end part of the transmission shaft.
For the dustproof structure at the fixed end of the automobile transmission shaft, the technical scheme of the invention is as follows: the dustproof structure at the fixed end of the automobile transmission shaft comprises the transmission shaft and a dustproof cover, wherein the dustproof cover comprises an integrally formed plastic body; the plastic body comprises an inner ring, an outer ring and an annular connecting part for connecting the root parts of the inner ring and the outer ring; an end cover is arranged at the top of the inner ring; the outer ring is firstly shrunk inwards from the root part to the top part and then flared outwards to form a shrinking section and a flaring section; a metal framework is arranged inside the plastic body; correspondingly, the metal framework comprises an inner ring framework, an outer ring contraction section framework and a connecting part framework; a group of notches are formed in the top of the outer ring contraction section framework along the circumferential direction, so that an elastic clamping piece is formed between every two adjacent notches; the transmission shaft is inserted between the inner ring and the outer ring, interference fit is formed between the transmission shaft and the inner ring and the outer ring respectively, and the end part of the transmission shaft is abutted to the annular connecting part.
Compared with the prior art, among the dustproof construction of the automobile transmission shaft stiff end of this application, the automobile transmission shaft stiff end is provided with the shield of specific structure, and the outer lane of shield comprises contraction section and flaring section, and the flaring section plays the guide effect, has reduced the positioning accuracy requirement when the shield impresses for economic nature has obtained the promotion, and the inside elasticity clamping piece that is equipped with of contraction section presss from both sides the axle tightly through the elasticity clamping piece, and sealing performance is good and the fastness is good.
Preferably, the contraction section is in a cone shape of 5-15 degrees, and the expansion section is in a cone shape of 15-30 degrees. At this moment, the sealing performance of the dustproof cover is ensured, the size of the connecting part is small, and the whole structure is compact.
Preferably, the plastic body is made of polytetrafluoroethylene. The polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-sticking property, electrical insulation property and good ageing resistance; and the friction coefficient between the polytetrafluoroethylene and the transmission shaft is small, so that the dust cover can be easily inserted into the transmission shaft.
For the dust cover at the fixed end of the automobile transmission shaft, the technical scheme of the invention is as follows: the dustproof cover comprises a transmission shaft and a dustproof cover, wherein the dustproof cover comprises an integrally formed plastic body; the plastic body comprises an inner ring, an outer ring and an annular connecting part for connecting the root parts of the inner ring and the outer ring; an end cover is arranged at the top of the inner ring; the outer ring is firstly shrunk inwards from the root part to the top part and then flared outwards to form a shrinking section and a flaring section; a metal framework is arranged inside the plastic body; correspondingly, the metal framework comprises an inner ring framework, an outer ring contraction section framework and a connecting part framework; the top of outer lane shrink section skeleton is equipped with a set of notch along circumference to form the elasticity clamping piece between two adjacent notches.
Compared with the prior art, the dust cover at the fixed end of the automobile transmission shaft is easy to press into the end part of the transmission shaft, the assembly difficulty is low, and the economical efficiency is good; the outer lane of shield comprises shrink section and flaring section, and the flaring section plays the guide effect, has reduced the positioning accuracy requirement when shield impresses for economic nature has obtained the promotion, and the inside elasticity clamping piece that is equipped with of shrink section presss from both sides the axle through the elasticity clamping piece tightly, and sealing performance is good and the fastness is good.
Preferably, the contraction section is in a cone shape of 5-15 degrees, and the expansion section is in a cone shape of 15-30 degrees. At this moment, the sealing performance of the dustproof cover is ensured, the size of the connecting part is small, and the whole structure is compact.
And optimally, the group of notches are uniformly distributed along the circumferential direction of the top of the inner ring framework. The notch that evenly sets up not only makes metal framework whole become the symmetry, also makes metal framework's elasticity become even, and then makes the shield insert the car transmission shaft more easily. In addition, the arrangement mode also enables the production and the manufacture of the dustproof cover to be more convenient, and is beneficial to controlling the cost.
Preferably, the plastic body is made of polytetrafluoroethylene. The polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-sticking property, electrical insulation property and good ageing resistance; and the friction coefficient between the polytetrafluoroethylene and the transmission shaft is small, so that the dust cover can be easily inserted into the transmission shaft.
Drawings
FIG. 1 is a schematic perspective view of a dust-proof structure at a fixed end of a transmission shaft of an automobile according to the present invention;
FIG. 2 is a schematic perspective view of a dust cap at the fixed end of an automobile transmission shaft according to the present invention;
FIG. 3 is a front view of the fixed end dust cap of the automobile transmission shaft of the present invention;
FIG. 4 is a sectional view of the fixed end dust cap of the transmission shaft of the vehicle shown in FIG. 3 in the direction B;
fig. 5 is a schematic structural view of a metal framework of the dust-proof cover at the fixed end of the automobile transmission shaft of the invention.
The labels in the figures are: 1-a transmission shaft; 2-a dust cover; 21-inner ring; 22-an outer ring; 23-an annular connection; 24-an end cap; 25-inner ring framework; 26-outer ring framework; 261-notch; 262-a resilient clip; 27-connecting part skeleton.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Referring to fig. 1 to 5, the dust-proof structure of the fixed end of the transmission shaft of the automobile comprises a transmission shaft 1 and a dust-proof cover 2, wherein the dust-proof cover 2 comprises an integrally formed plastic body; the plastic body comprises an inner ring 21, an outer ring 22 and an annular connecting part 23 for connecting the root parts of the inner ring 21 and the outer ring 22; the top of the inner ring 21 is provided with an end cover 24; the outer ring 22 is firstly shrunk inwards from the root part to the top part and then flares outwards to form a shrinking section 221 and a flaring section 222; a metal framework is arranged inside the plastic body; correspondingly, the metal framework comprises an inner ring framework 25, an outer ring contraction section framework 26 and a connecting part framework 27 (the inner ring framework 25 is arranged inside the inner ring 21 of the plastic body, the outer ring framework 26 is arranged inside the outer ring 22 of the plastic body, and the connecting part framework 27 is arranged inside the annular connecting part 23 of the plastic body); a group of notches 261 are formed in the top of the outer ring contraction section framework 26 along the circumferential direction, so that elastic clamping pieces 262 are formed between every two adjacent notches 261; the transmission shaft 1 is inserted between the inner ring 21 and the outer ring 22, interference fit is formed between the transmission shaft 1 and the inner ring 21 and the outer ring 22 respectively, and the end of the transmission shaft 1 is abutted to the annular connecting part 23.
As a specific example: the contraction section 221 is in a cone shape of 5-15 degrees, and the expansion section 222 is in a cone shape of 15-30 degrees. At this time, the sealing performance of the dust cap 2 is ensured, the size of the connecting part is small, and the whole structure is compact.
As a specific example: the plastic body is made of polytetrafluoroethylene. The polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-sticking property, electrical insulation property and good ageing resistance; and the friction coefficient between the polytetrafluoroethylene and the transmission shaft 1 is small, so that the dust cap 2 can be easily inserted into the transmission shaft 1.
Referring to fig. 2 to 5, the dust cap 2 for the fixed end of the transmission shaft of the automobile comprises an integrally formed plastic body; the plastic body comprises an inner ring 21, an outer ring 22 and an annular connecting part 23 for connecting the root parts of the inner ring 21 and the outer ring 22; the top of the inner ring 21 is provided with an end cover 24; the outer ring 22 is firstly shrunk inwards from the root part to the top part and then flares outwards to form a shrinking section 221 and a flaring section 222; a metal framework is arranged inside the plastic body; correspondingly, the metal framework comprises an inner ring framework 25, an outer ring contraction section framework 26 and a connecting part framework 27; the top of the outer ring contraction section framework 26 is provided with a group of notches 261 along the circumferential direction, so that elastic clips 262 are formed between two adjacent notches 261.
As a specific example: the contraction section 221 is in a cone shape with an angle of 5-15 degrees (namely, the contraction section 221 is in a cone shape, and the included angle between the cone surface and the central line is 5-15 degrees), and the flaring section 222 is in a cone shape with an angle of 15-30 degrees. At this time, the sealing performance of the dust cap 2 is ensured, the size of the connecting part is small, and the whole structure is compact.
As a specific example: the notches 261 are uniformly distributed along the circumferential direction of the top of the inner ring framework 25. Notch 261 that evenly sets up not only makes the metal framework whole become the symmetry, also makes metal framework's elasticity become even, and then makes shield 2 insert car transmission shaft 1 more easily. In addition, the arrangement mode also enables the production and the manufacture of the dust cover 2 to be more convenient, and is beneficial to controlling the cost.
As a specific example: the plastic body is made of polytetrafluoroethylene. The polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-sticking property, electrical insulation property and good ageing resistance; and the friction coefficient between the polytetrafluoroethylene and the transmission shaft 1 is small, so that the dust cap 2 can be easily inserted into the transmission shaft 1.
The above general description of the invention and the description of the specific embodiments thereof, as referred to in this application, should not be construed as limiting the technical solutions of the invention. Those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the specific embodiments (including the examples) to form other technical solutions within the protection scope of the present application according to the disclosure of the present application without departing from the structural elements of the present invention.
Claims (7)
1. The dustproof structure at the fixed end of the automobile transmission shaft comprises a transmission shaft (1) and a dustproof cover (2); the method is characterized in that:
the dust cover (2) comprises an integrally formed plastic body; the plastic body comprises an inner ring (21), an outer ring (22) and an annular connecting part (23) for connecting the roots of the inner ring (21) and the outer ring (22); the top of the inner ring (21) is provided with an end cover (24); the outer ring (22) is firstly shrunk inwards from the root part to the top part and then flares outwards to form a shrinking section (221) and a flaring section (222); a metal framework is arranged inside the plastic body; correspondingly, the metal framework comprises an inner ring framework (25), an outer ring contraction section framework (26) and a connecting part framework (27); a group of notches (261) are formed in the top of the outer ring contraction section framework (26) along the circumferential direction, and therefore elastic clamping pieces (262) are formed between every two adjacent notches (261);
the transmission shaft (1) is inserted between the inner ring (21) and the outer ring (22), interference fit is formed between the transmission shaft and the inner ring (21) and the outer ring (22), and the end part of the transmission shaft (1) is abutted to the annular connecting part (23).
2. The dustproof structure at the fixed end of the transmission shaft of the automobile as claimed in claim 1, wherein: the contraction section (221) is in a cone shape of 5-15 degrees, and the expansion section (222) is in a cone shape of 15-30 degrees.
3. The dust-proof structure at the fixed end of the transmission shaft of the automobile according to claim 1 or 2, characterized in that: the plastic body is made of polytetrafluoroethylene.
4. Automobile transmission shaft stiff end shield (2), its characterized in that: the dust cover (2) comprises an integrally formed plastic body; the plastic body comprises an inner ring (21), an outer ring (22) and an annular connecting part (23) for connecting the roots of the inner ring (21) and the outer ring (22); the top of the inner ring (21) is provided with an end cover (24); the outer ring (22) is firstly shrunk inwards from the root part to the top part and then flares outwards to form a shrinking section (221) and a flaring section (222); a metal framework is arranged inside the plastic body; correspondingly, the metal framework comprises an inner ring framework (25), an outer ring contraction section framework (26) and a connecting part framework (27); the top of the outer ring contraction section framework (26) is provided with a group of notches (261) along the circumferential direction, so that elastic clamping pieces (262) are formed between every two adjacent notches (261).
5. The automobile transmission shaft fixed end dust cover according to claim 4, characterized in that: the contraction section (221) is in a conical shape with the angle of 5-15 degrees, and the expansion section (222) is in a conical shape with the angle of 15-30 degrees.
6. The automobile transmission shaft fixed end dust cover according to claim 4, characterized in that: and the group of notches (261) are uniformly distributed along the circumferential direction of the top of the inner ring framework (25).
7. The automobile transmission shaft fixed end dust cover according to claim 4, 5 or 6, characterized in that: the plastic body is made of polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827045.9A CN110486468B (en) | 2019-09-03 | 2019-09-03 | Dustproof construction and shield of car transmission shaft stiff end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910827045.9A CN110486468B (en) | 2019-09-03 | 2019-09-03 | Dustproof construction and shield of car transmission shaft stiff end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110486468A CN110486468A (en) | 2019-11-22 |
| CN110486468B true CN110486468B (en) | 2020-09-18 |
Family
ID=68556312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910827045.9A Active CN110486468B (en) | 2019-09-03 | 2019-09-03 | Dustproof construction and shield of car transmission shaft stiff end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110486468B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH678844A5 (en) * | 1989-05-18 | 1991-11-15 | Paul Adam | |
| CN102466041A (en) * | 2010-11-11 | 2012-05-23 | 天津市环宇橡塑制造公司 | Dust cover structure at fixed end of automobile transmission shaft |
| CN202371165U (en) * | 2011-12-20 | 2012-08-08 | 上海通用汽车有限公司 | Dust cap for oil seal of transmission shaft |
| CN202687014U (en) * | 2012-06-07 | 2013-01-23 | 日本钢提桶制造株式会社 | Handheld bucket |
| CN202946653U (en) * | 2012-10-25 | 2013-05-22 | 青岛海力威新材料科技股份有限公司 | Seal blocking cover resistant to high pressure |
| CN207631759U (en) * | 2017-12-08 | 2018-07-20 | 陈植 | Containing box of refrigerator packs tightly sealing mechanism |
| CN207673836U (en) * | 2017-12-22 | 2018-07-31 | 浙江威罗德汽配科技有限公司 | A kind of truck drive shaft dustproof cover |
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2019
- 2019-09-03 CN CN201910827045.9A patent/CN110486468B/en active Active
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| CN110486468A (en) | 2019-11-22 |
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Effective date of registration: 20231129 Address after: 441000 No.36 Shenzhen Avenue, Shenzhen Industrial Park, high tech Zone, Xiangyang City, Hubei Province Patentee after: Xiangyang enteen Yulong Transmission System Co.,Ltd. Address before: No.17, Jiaotong Road, Haiyou street, Sanmen County, Taizhou City, Zhejiang Province 317100 Patentee before: Zhejiang Yuyan Industrial Design Co.,Ltd. |