CN102200171A - Pre-tightening type double-lip seal structure of cardan joint - Google Patents
Pre-tightening type double-lip seal structure of cardan joint Download PDFInfo
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- CN102200171A CN102200171A CN2010101334497A CN201010133449A CN102200171A CN 102200171 A CN102200171 A CN 102200171A CN 2010101334497 A CN2010101334497 A CN 2010101334497A CN 201010133449 A CN201010133449 A CN 201010133449A CN 102200171 A CN102200171 A CN 102200171A
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Abstract
The invention relates to a pre-tightening type double-lip seal structure of a cardan joint. A reducing part is formed on the outer surface of the open end of a cylindrical wall body of an outer ring, the outer diameter of the reducing part is smaller than the outer diameter of the cylindrical wall body, an outer annular groove is formed on the root of the reducing part, and an inner annular groove is arranged on the inner surface of the cylindrical wall body, which is adjacent to the open end. An oil seal comprises an oil seal framework and a rubber body, the rubber body comprises an inner ring and an outer ring which are connected into a whole and extend towards the same side, a double-lip structure is formed on the inner wall of the inner ring, part of the oil seal framework is embedded in the outer ring, the end part of the oil seal framework extends outside the outer ring and forms an outward turning part, the outward turning part is pressed in the inner annular groove of the outer ring, an annular spring groove is formed between the inner ring and the outer ring, and an annular locking spring is arranged in the annular spring groove. A dust cover comprises a cover body and a dust cover framework, the cover body comprises an outer cover ring, a middle cover ring and an inner cover ring which are connected into a whole and extend towards the same side, an internally protruding ring is formed on the inner wall of the outer cover ring and is clamped in the outer annular groove of the outer ring, the middle cover ring is adjacent to the inner wall of the outer ring, the outer wall surface of the inner cover ring is a conic surface, and the end of the inner ring of the rubber body of the oil seal is pressed on the conic surface of the outer wall surface of the inner cover ring.
Description
Technical field
The present invention relates to a kind of prefastening lips mouth sealing configuration of universal joint, belong to the technical field that universal joint is manufactured.
Background technique
In the prior art, majority does not directly carry out axially locating between the dust-proof cover of Hooke's joint and oil sealing and the outer ring, as a kind of Hooke's joint (patent No. of being convenient to assemble: CN01210724.7), it mainly is to be provided with a circlip groove in the mouth inboard, end of outer ring, it is built-in with split washer correspondingly, opening slot also can be arranged on the oil sealing base at this place except being set directly at oral area inboard, outer ring.Mainly between the dust-proof cover of above-mentioned patent and oil sealing and the outer ring realize three's axially locating by split washer, its reliability of positioning is relatively poor, thereby causes the sealing of Hooke's joint and dustproof effect relatively poor.
Summary of the invention
The object of the invention is to provide a kind of being beneficial between dust-proof cover and oil sealing and the outer ring to locate, be beneficial to the prefastening lips mouth sealing configuration of the universal joint of the sealing that improves Hooke's joint and dustproof effect, it is relatively poor to have solved between existing in prior technology dust-proof cover and oil sealing and the outer ring reliability of positioning, thereby causes problems such as the sealing of Hooke's joint and dustproof effect be relatively poor.
Above-mentioned technical purpose of the present invention solves by the following technical programs: the prefastening lips mouth sealing configuration of universal joint, it comprises the outer ring of cup-shaped structure, be positioned at the oil sealing of opening end inboard, outer ring and be positioned at the dust-proof cover of outer ring opening end, the inner bottom part of outer ring is provided with packing ring, the outer ring inwall is provided with needle roller between packing ring and oil sealing, be provided with the needle roller back-up ring between needle roller and oil sealing the inner, described outer ring constitutes cup-like structure by the bottom of tubular wall body and tubular wall body one end, described tubular wall body opening end outer surface is formed with diameter reducing part, the external diameter of diameter reducing part is less than the external diameter of tubular wall body, the root of diameter reducing part is formed with the outer ring groove, and the internal surface of tubular wall body is provided with interior annular groove near opening end;
Described oil sealing comprises oil tight skeleton and rubber body, rubber body comprises interior ring and the outer ring that connects as one and extend to the same side, interior ring inwall forms the lips mouth structure, oil tight skeleton partly is embedded in outer ring, it is outer and form valgus that the end of oil tight skeleton extends to outer ring, described valgus is connected in the interior annular groove of outer ring, forms the annular spring groove between interior ring and the outer ring, is provided with annular locking spring in the described annular spring groove;
Described dust-proof cover comprises cover body and dust-proof cover skeleton, cover body comprises and connects as one and extend outer cover circle, middle cover circle and inner cover circle to the same side, wherein the inwall of outer cover circle is formed with internal projecting ring, described internal projecting ring card fits in the outer ring groove of outer ring, middle cover circle is adjacent with the inwall of outer ring, the outer wall of inner cover circle forms the conical surface, and the interior ring end of described oil sealing rubber body is connected on the conical surface of outer wall of inner cover circle.
Oil sealing of the present invention is inner to be contacted with the needle roller back-up ring, the valgus of oil tight skeleton is connected to the interior bi-directional axial location of realizing between oil sealing and the outer ring of interior annular groove of outer ring, the lips mouth structure of ring inwall had the pretension trend that closely contacts with the universal-joint cross trunnion surface in the annular locking spring was arranged on and can makes in the annular spring groove, the interior ring end of rubber body is connected to then can be strengthened the lips mouth on the conical surface of inner cover ring outer wall face and contact with the tight of universal-joint cross trunnion, and then improve the sealing effect of oil sealing, and make between the lips mouth of oil sealing and the universal-joint cross trunnion and be in tight state of contact all the time; Dust-proof cover then the internal projecting ring by its outer cover circle and outer ring outer ring groove cooperate and cover body is located with the realization bi-directional axial that cooperates at cross axle step place, thereby guaranteed the reliable location of dust-proof cover, and and then guaranteed of the prestressing effect of the conical surface of dust-proof cover inner cover ring outer wall face to ring in the oil sealing, thereby guaranteed that the three between oil sealing and dust-proof cover and the outer ring reliably locatees, improved the sealing and the dustproof effect of Hooke's joint.
As preferably, described dust-proof cover skeleton ringwise and comprise ring and skeleton outer shroud in the skeleton, ring and skeleton outer ring become U type structure in the skeleton, the interior ring of skeleton is embedded in the inner cover circle of cover body, the skeleton outer shroud is embedded in the outer cover circle of cover body.Wherein, ring and skeleton outer ring become U type structure and can make between the inner cover circle of cover body and the outer cover circle and have stable radial position relationship in the skeleton of dust-proof cover skeleton, thereby make between the outer ring groove of the internal projecting ring of outer cover circle and outer ring and between the interior ring end of the conical surface of inner cover ring outer wall face and oil sealing rubber body and have mutual clamping force respectively, thereby make the relative position between oil sealing, dust-proof cover and the outer ring three more reliable and more stable, thereby guarantee good sealing and dustproof effect.
As preferably, in the described outer ring between the internal surface of the inner of annular groove and tubular wall body by the inner conical chamfered transition, the tapered horn strucutre of the valgus of described oil tight skeleton.Wherein, oil tight skeleton adopts the valgus of conical horn structure to cooperate with the interior annular groove of the inner conical chamfered transition of outer ring, can guarantee the axial and radial stability of oil sealing.
As preferably, pass through the external conical shape chamfered transition between the outer end of described outer ring outer ring groove and the diameter reducing part, thereby be convenient to the internal projecting ring of dust-proof cover outer outlet body and the assembling between the outer ring groove of outer ring.
As preferably, the interior ring of described oil sealing rubber body and the annular spring slot cross-section between the outer ring are the arc-shaped structure greater than semi-circle, thereby can play good location, and then guarantee the lips mouth of ring internal face in the oil sealing rubber body and the sealing effect between the cross axle surface locking spring.
As preferably, chamfering and outer chamfering in described outer ring tubular wall body opening end is formed with respectively, thus be convenient to assembling between dust-proof cover and the outer ring cylindrical wall end of body.
As preferably, the conical surface of described dust-proof cover cover body inner cover ring outer wall face and the angle of cover body axis are 45 °-75 °, thereby the conical surface that makes dust-proof cover cover body inner cover ring outer wall face has enough inclinations and then the interior ring end of oil sealing rubber body is produced pressure preferably, helps improving the lips mouth of ring internal face in the oil sealing rubber body and the sealing effect between the cross axle surface
Therefore, the present invention has between the dust-proof cover of being beneficial to and oil sealing and the outer ring and locatees, and is beneficial to characteristics such as the sealing that improves Hooke's joint and dustproof effect.
Description of drawings
Fig. 1 is a kind of assembly structure schematic representation of the present invention;
Fig. 2 is the A place partial enlarged drawing of Fig. 1;
Fig. 3 is a kind of structural representation of outer ring of the present invention;
Fig. 4 is the B place partial enlarged drawing of Fig. 3;
Fig. 5 is a kind of structural representation of oil sealing of the present invention;
Fig. 6 is the C place partial enlarged drawing of Fig. 5;
Fig. 7 is a kind of structural representation of dust-proof cover of the present invention;
Fig. 8 is the D place partial enlarged drawing of Fig. 7.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment: as shown in Figure 1, comprise cup-shaped structure outer ring 1, be positioned at the oil sealing 2 of opening end inboard, outer ring and be positioned at the dust-proof cover 3 of outer ring opening end, the inner bottom part of outer ring 1 is provided with packing ring 4, outer ring 1 inwall is provided with needle roller 5 between packing ring 4 and oil sealing 2, be provided with needle roller back-up ring 6 between needle roller 5 and oil sealing 2 the inners
As shown in Figure 3 and Figure 4, outer ring 1 constitutes cup-like structure by the bottom 7 of tubular wall body 6 and tubular wall body 6 one ends, the opening end outer surface of tubular wall body 6 is formed with diameter reducing part 8, the external diameter of diameter reducing part 8 is less than the external diameter of tubular wall body, the root of diameter reducing part 8 is formed with outer ring groove 9, annular groove 10 in the internal surface of tubular wall body 6 is provided with near opening end; By 11 transition of inner conical inclined-plane, by 12 transition of external conical shape inclined-plane, outer ring tubular wall body opening end is formed with interior chamfering 13 and outer chamfering 14 respectively between the outer end of outer ring groove 9 and the diameter reducing part 8 between the internal surface of the inner of interior annular groove 10 and tubular wall body.
As shown in Figure 5 and Figure 6, oil sealing comprises oil tight skeleton 15 and rubber body 16, rubber body 16 comprises interior ring 17 and the outer ring 18 that connects as one and extend to the same side, interior ring 17 inwalls form lips mouth structure 19, the part of oil tight skeleton 15 is embedded in outer ring 18, the end of oil tight skeleton 15 extends to outside the outer ring 18 and forms valgus 20, valgus 20 tapered horn strucutres, form annular spring groove 21 between interior ring 17 and the outer ring 18, be provided with annular locking spring 22 in the annular spring groove 21, the cross section of annular spring groove 21 is the arc-shaped structure greater than semi-circle.
As shown in Figure 7 and Figure 8, dust-proof cover comprises cover body 23 and dust-proof cover skeleton 24, cover body 23 comprises and connects as one and extend outer cover circle 25, middle cover circle 26 and inner cover circle 27 to the same side that wherein the inwall of outer cover circle 25 is formed with internal projecting ring 28, and the outer wall of inner cover circle 27 forms the conical surface 29; Dust-proof cover skeleton 24 ringwise and comprise ring 30 and skeleton outer shroud 31 in the skeleton, ring 30 and skeleton outer shroud 31 form U type structure in the skeleton, ring 30 is embedded in the inner cover circle of cover body in the skeleton, skeleton outer shroud 31 is embedded in the outer cover circle of cover body.The conical surface of dust-proof cover cover body inner cover ring outer wall face and the angle of cover body axis are 60 °.
As shown in Figure 2, the valgus 20 of oil tight skeleton 15 is connected in the interior annular groove 10 of outer ring 1, internal projecting ring 28 cards of dust-proof cover outer cover circle 25 fit in the outer ring groove 9 of outer ring 1, cover circle 26 is adjacent with the inwall of outer ring 1 in the dust-proof cover, and the end 32 of the interior ring 17 of oil sealing rubber body is connected on the conical surface 29 of outer wall of dust-proof cover inner cover circle 27.
Oil sealing is inner to be contacted with the needle roller back-up ring, the valgus of oil tight skeleton is connected to the interior bi-directional axial location of realizing between oil sealing and the outer ring of interior annular groove of outer ring, the lips mouth structure of ring inwall had the pretension trend that closely contacts with the universal-joint cross trunnion surface in the annular locking spring was arranged on and can makes in the annular spring groove, the interior ring end of rubber body is connected to then can be strengthened the lips mouth on the conical surface of inner cover ring outer wall face and contact with the tight of universal-joint cross trunnion, and then improve the sealing effect of oil sealing, and make between the lips mouth of oil sealing and the universal-joint cross trunnion and be in tight state of contact all the time; Dust-proof cover then the internal projecting ring by its outer cover circle and outer ring outer ring groove cooperate and cover body is located with the realization bi-directional axial that cooperates at cross axle step place, thereby guaranteed the reliable location of dust-proof cover, and and then guaranteed of the prestressing effect of the conical surface of dust-proof cover inner cover ring outer wall face to ring in the oil sealing, thereby guaranteed that the three between oil sealing and dust-proof cover and the outer ring reliably locatees, improved the sealing and the dustproof effect of Hooke's joint.
Claims (7)
1. the prefastening lips mouth sealing configuration of a universal joint, the outer ring that comprises cup-shaped structure, be positioned at the oil sealing of opening end inboard, outer ring and be positioned at the dust-proof cover of outer ring opening end, the inner bottom part of outer ring is provided with packing ring, the outer ring inwall is provided with needle roller between packing ring and oil sealing, be provided with the needle roller back-up ring between needle roller and oil sealing the inner, it is characterized in that: described outer ring constitutes cup-like structure by the bottom of tubular wall body and tubular wall body one end, described tubular wall body opening end outer surface is formed with diameter reducing part, the external diameter of diameter reducing part is less than the external diameter of tubular wall body, the root of diameter reducing part is formed with the outer ring groove, and the internal surface of tubular wall body is provided with interior annular groove near opening end;
Described oil sealing comprises oil tight skeleton and rubber body, rubber body comprises interior ring and the outer ring that connects as one and extend to the same side, interior ring inwall forms the lips mouth structure, oil tight skeleton partly is embedded in outer ring, it is outer and form valgus that the end of oil tight skeleton extends to outer ring, described valgus is connected in the interior annular groove of outer ring, forms the annular spring groove between interior ring and the outer ring, is provided with annular locking spring in the described annular spring groove;
Described dust-proof cover comprises cover body and dust-proof cover skeleton, cover body comprises and connects as one and extend outer cover circle, middle cover circle and inner cover circle to the same side, wherein the inwall of outer cover circle is formed with internal projecting ring, described internal projecting ring card fits in the outer ring groove of outer ring, middle cover circle is adjacent with the inwall of outer ring, the outer wall of inner cover circle forms the conical surface, and the interior ring end of described oil sealing rubber body is connected on the conical surface of outer wall of inner cover circle.
2. the prefastening lips mouth sealing configuration of universal joint according to claim 1, it is characterized in that described dust-proof cover skeleton ringwise and comprise ring and skeleton outer shroud in the skeleton, ring and skeleton outer ring become U type structure in the skeleton, ring is embedded in the inner cover circle of cover body in the skeleton, and the skeleton outer shroud is embedded in the outer cover circle of cover body.
3. the prefastening lips mouth sealing configuration of universal joint according to claim 1 and 2, it is characterized in that between the internal surface of the inner of annular groove in the described outer ring and tubular wall body by the inner conical chamfered transition the tapered horn strucutre of the valgus of described oil tight skeleton.
4. the prefastening lips mouth sealing configuration of universal joint according to claim 1 and 2 is characterized in that between the outer end of described outer ring outer ring groove and the diameter reducing part by the external conical shape chamfered transition.
5. the prefastening lips mouth sealing configuration of universal joint according to claim 1 and 2 is characterized in that the interior ring of described oil sealing rubber body and the annular spring slot cross-section between the outer ring are the arc-shaped structure greater than semi-circle.
6. the prefastening lips mouth sealing configuration of universal joint according to claim 1 and 2 is characterized in that described outer ring tubular wall body opening end is formed with interior chamfering and outer chamfering respectively.
7. the prefastening lips mouth sealing configuration of universal joint according to claim 1 and 2 is characterized in that the conical surface of described dust-proof cover cover body inner cover ring outer wall face and the angle of cover body axis are 45 °-75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133449 CN102200171B (en) | 2010-03-25 | 2010-03-25 | Pre-tightening type double-lip seal structure of cardan joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133449 CN102200171B (en) | 2010-03-25 | 2010-03-25 | Pre-tightening type double-lip seal structure of cardan joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102200171A true CN102200171A (en) | 2011-09-28 |
| CN102200171B CN102200171B (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010133449 Active CN102200171B (en) | 2010-03-25 | 2010-03-25 | Pre-tightening type double-lip seal structure of cardan joint |
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| Country | Link |
|---|---|
| CN (1) | CN102200171B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357144A (en) * | 2021-06-30 | 2021-09-07 | 中国石油大学(华东) | Shaft seal device for crude oil long-distance transmission line large-displacement double-screw oil transfer pump and oil transfer pump |
| JP7489816B2 (en) | 2020-04-13 | 2024-05-24 | Nok株式会社 | Sealing device and sealing structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH109280A (en) * | 1996-06-05 | 1998-01-13 | Gkn Automot Ag | Cruciform member unit of universal joint |
| CN2888168Y (en) * | 2006-01-19 | 2007-04-11 | 万向钱潮股份有限公司 | Gimbal with dustproof seal structure |
| CN200965017Y (en) * | 2006-11-14 | 2007-10-24 | 万向钱潮股份有限公司 | Oil seal structure gimbal |
| US20070293328A1 (en) * | 2003-07-10 | 2007-12-20 | Philip Mazziotti | Joint Seal |
-
2010
- 2010-03-25 CN CN 201010133449 patent/CN102200171B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH109280A (en) * | 1996-06-05 | 1998-01-13 | Gkn Automot Ag | Cruciform member unit of universal joint |
| US20070293328A1 (en) * | 2003-07-10 | 2007-12-20 | Philip Mazziotti | Joint Seal |
| CN2888168Y (en) * | 2006-01-19 | 2007-04-11 | 万向钱潮股份有限公司 | Gimbal with dustproof seal structure |
| CN200965017Y (en) * | 2006-11-14 | 2007-10-24 | 万向钱潮股份有限公司 | Oil seal structure gimbal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7489816B2 (en) | 2020-04-13 | 2024-05-24 | Nok株式会社 | Sealing device and sealing structure |
| CN113357144A (en) * | 2021-06-30 | 2021-09-07 | 中国石油大学(华东) | Shaft seal device for crude oil long-distance transmission line large-displacement double-screw oil transfer pump and oil transfer pump |
| CN113357144B (en) * | 2021-06-30 | 2023-02-17 | 中国石油大学(华东) | Shaft seal device for crude oil long-distance transmission line large-displacement double-screw oil transfer pump and oil transfer pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102200171B (en) | 2012-12-26 |
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Address after: 311215 Wanxiang Road, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Wanxiang Qianchao Co.,Ltd. Patentee after: WANXIANG GROUP Co.,Ltd. Address before: 311215 Wanxiang Group Technology Center, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: WANXIANG QIANCHAO Co.,Ltd. Patentee before: WANXIANG GROUP Co.,Ltd. |
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