CN212690777U - Rotatable technological oil seal of transmission - Google Patents
Rotatable technological oil seal of transmission Download PDFInfo
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- CN212690777U CN212690777U CN202021044274.8U CN202021044274U CN212690777U CN 212690777 U CN212690777 U CN 212690777U CN 202021044274 U CN202021044274 U CN 202021044274U CN 212690777 U CN212690777 U CN 212690777U
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Abstract
The utility model discloses a rotatable technology oil blanket of derailleur, including the two slip face seal of circle cover form and the single slip face supporting component of cover in two slip face seal peripheral faces that inner peripheral surface and outer peripheral face can both slip, two slip face seals cover in the pivot, the outer peripheral face of single slip face supporting component cover in the inner wall in derailleur shaft hole and with the laminating of derailleur inner wall sealed, and keep relative stillness with derailleur shaft hole inner wall; the rotating shaft can rotate in the double-sliding-surface sealing body; the dual sliding surface seal body is capable of rotating with the shaft within the single sliding surface support assembly. The advantages are that: the service life of the oil seal is obviously prolonged; allowing deflection of the output shaft to within 5 deg..
Description
Technical Field
The utility model relates to an oil blanket, concretely relates to rotatable technology oil blanket of derailleur belongs to transmission technical field.
Background
An oil seal is a mechanical element used to seal oil, which isolates parts of a drive train that require lubrication from oil leakage. The derailleur oil blanket plays very big effect as the important spare part of car to the quality of car, and one of the common problem of derailleur when oil blanket oil leak problem, the lubricating oil seepage not only the polluted environment can cause the lubricating oil volume to reduce simultaneously, is unfavorable for the lubrication of gearbox to produce parts such as gear, bearing early wear and tear damage, can cause the direct burn damage of heat dispersion variation even, shortens derailleur life. The derailleur oil blanket also blocks impurity such as external moisture, dust simultaneously and gets into inside the derailleur, avoids lubricating oil to go bad because external impurity gets into, causes the lubricated bad wearing and tearing that takes place aggravation finally to lose efficacy.
The transmission oil seal is generally assembled on transmission shaft assemblies such as a transmission input shaft and a transmission variable shell, and an output half shaft and the transmission variable shell. In the prior art, the input shaft and the output shaft of the transmission are in continuous high-speed rotation, and the lip of the static oil seal and the shaft neck are always in a friction state. The oil seal is easy to wear and lose efficacy, and the oil seal needs to be frequently replaced as a quick-wear part. Therefore, how to prolong the service life of the oil seal is a technical problem to be solved urgently by technical personnel in the industry.
SUMMERY OF THE UTILITY MODEL
The utility model provides a main technical problem be: the problem that oil seals are easy to wear and lose efficacy because shaft necks of an input shaft and an output shaft which continuously rotate at a high speed of the transmission and a static oil seal lip are always in a friction state.
To the above problem, the utility model provides a technical scheme is:
a rotatable technical oil seal of a transmission comprises a round sleeve-shaped double-sliding-surface sealing body and a single-sliding-surface supporting assembly, wherein the inner peripheral surface and the outer peripheral surface of the round sleeve-shaped double-sliding-surface sealing body can slide, the single-sliding-surface supporting assembly is sleeved on the outer peripheral surface of the double-sliding-surface sealing body, the double-sliding-surface sealing body is sleeved on a rotating shaft, and the outer peripheral surface of the single-sliding-surface supporting assembly is sleeved on the inner wall of a transmission shaft hole, is attached to and; the rotating shaft can rotate in the double-sliding-surface sealing body; the dual sliding surface seal body is capable of rotating with the shaft within the single sliding surface support assembly.
Furthermore, the double-sliding-surface sealing body is provided with a sealing sliding sleeve and a flange-shaped supporting edge arranged on the outer peripheral surface of the front end of the sealing sliding sleeve; the inner peripheral surface of sealed sliding sleeve front end is the dust cover with the pivot laminating, the inner peripheral surface of sealed sliding sleeve rear end is the oil blanket face with the pivot laminating, between dust cover and oil blanket face for with the pivot between gapped concave surface.
Furthermore, the single-sliding-surface supporting component comprises an elastic sealing outer ring which is positioned on the periphery of the single-sliding-surface supporting component, and the outer peripheral surface of the single-sliding-surface supporting component is sleeved on the inner wall of the transmission shaft hole and is in fit sealing with the inner wall of the transmission, namely the outer peripheral surface of the sealing outer ring is sleeved on the inner wall of the transmission shaft hole and is in fit sealing with the inner wall of the transmission.
Furthermore, the single-sliding-surface supporting assembly also comprises a rigid supporting edge, wherein the supporting edge comprises a rigid ring and an inner limiting edge which is radially and inwardly turned at the front end of the rigid ring and is integrally formed with the rigid ring; the supporting edge is sleeved at the front end in the sealing outer ring and keeps relatively static with the sealing outer ring, the inner peripheral surface of the rigid ring of the supporting edge is attached to the outer peripheral surface of the supporting edge of the double-sliding-surface sealing body, the rear end surface of the supporting edge, which is an inner limiting edge, is attached to the outer front end surface of the supporting edge of the double-sliding-surface sealing body, and the supporting edge of the double-sliding-surface sealing body can rotate in the supporting edge.
Furthermore, the front end of the sealing outer ring is provided with a radially outward protruding limiting flange which is integrally formed with the sealing outer ring, and the limiting flange is provided with an embedding groove which is opened on the inner circumferential surface of the limiting flange; the supporting edge also comprises a limiting outer edge which is radially and outwards folded at the front end of the rigid ring and is integrally formed with the rigid ring; and the limiting outer edge of the supporting edge is embedded into the caulking groove of the limiting flange of the sealing outer ring.
Furthermore, the single-sliding-surface support assembly also comprises an elastic retainer, and the retainer is positioned between the sealing outer ring and the sealing sliding sleeve of the double-sliding-surface sealing body; the retainer is provided with an annular split groove with an opening at the rear end face, an outer supporting ring is arranged outside the split groove, the outer peripheral face of the outer supporting ring is attached to the inner peripheral face of the sealing outer ring, an inner supporting ring is arranged inside the split groove, the inner peripheral face of the inner supporting ring is attached to the outer peripheral face of the sealing sliding sleeve of the double-sliding-face sealing body, and the sealing sliding sleeve of the double-sliding-face sealing body can slide on the inner peripheral face of the inner supporting ring of the retainer.
Furthermore, a tension spring is arranged in the retainer. The setting position is positioned on the outer peripheral surface of an inner support ring which can hold the oil seal surface of the double-sliding-surface sealing body tightly on the rotating shaft.
Furthermore, a gap is formed between the retainer and the supporting edge of the double-sliding-surface sealing body, a grease storage cavity for filling lubricating grease is formed, and grease filled in the grease storage cavity forms a grease sealing ring for sealing the outer ring and the sealing sliding sleeve of the double-sliding-surface sealing body.
Furthermore, an annular embedding groove is formed in the outer peripheral face of the sealing sliding sleeve between the inner support ring of the retainer and the sealing sliding sleeve of the double-sliding-surface sealing body, a friction-resistant annular grease-impregnated pad is arranged in the embedding groove, the front end of the grease-impregnated pad is in contact with the grease sealing ring, and the grease-impregnated pad rotates along with the double-sliding-surface sealing body.
The utility model has the advantages that: the service life of the oil seal is obviously prolonged; allowing deflection of the output member to within 5 deg..
Drawings
FIG. 1 is a schematic cross-sectional perspective view of the process oil seal;
FIG. 2 is a schematic axial cross-sectional view of the process oil seal;
FIG. 3 is a schematic cross-sectional view of the dual sliding surface seal body;
FIG. 4 is a schematic cross-sectional view of the seal outer ring;
FIG. 5 is a schematic cross-sectional view of the support edge;
fig. 6 is a schematic cross-sectional view of the cage.
In the figure: 1. a process oil seal; 2. a double-sliding-surface sealing body; 21. sealing the sliding sleeve; 22. a supporting edge; 23. a dust-proof surface; 24. oil-covered surfaces; 25. embedding a cushion groove; 3. sealing the outer ring; 31. a limiting flange; 32. caulking grooves; 4. a support edge; 41. a rigid ring; 42. limiting the edge inwards; 43. limiting the outer edge; 5. a holder; 51. dividing a groove; 52. an outer support ring; 53. an inner support ring; 6. a tension spring; 7. a fat storage cavity; 8. a grease seal ring; 9. soaking a fat pad; 10. a rotating shaft; 11. and the shaft hole.
Detailed Description
The invention is described in one step with reference to the following examples and figures:
as shown in fig. 1 and 2, a rotatable process oil seal 1 of a transmission comprises a round sleeve-shaped double-sliding-surface sealing body 2 with both the inner circumferential surface and the outer circumferential surface capable of sliding, and a single-sliding-surface supporting assembly sleeved on the outer circumferential surface of the double-sliding-surface sealing body 2, wherein the double-sliding-surface sealing body 2 is sleeved on a rotating shaft 10, the outer circumferential surface of the single-sliding-surface supporting assembly is sleeved on the inner wall of a transmission shaft hole 11, is attached to and sealed with the inner wall of the transmission, and keeps relatively static with the inner wall of the; the rotating shaft 10 can rotate in the double-sliding-surface sealing body 2; the double-sliding surface seal body 2 is capable of rotating with the shaft 10 within a single-sliding surface support assembly. The basic operation principle of the above arrangement is as follows: when the rotating shaft 10 rotates, the rotating shaft 10 rotates in the double-sliding-surface sealing body 2, when the frictional resistance between the rotating shaft 10 and the double-sliding-surface sealing body 2 is slightly increased, the double-sliding-surface sealing body 2 rotates in the single-sliding-surface supporting assembly along with the rotating shaft 10, and at the moment, although the rotating speed of the rotating shaft 10 is not reduced, the rotating speed of the rotating shaft 10 in the double-sliding-surface sealing body 2 is reduced or even completely stopped; on the contrary, when the frictional resistance between the double-sliding-surface sealing body 2 and the single-sliding-surface supporting component is slightly increased, the rotating shaft can rotate in the double-sliding-surface sealing body 2, and at this time, although the rotating speed of the rotating shaft 10 is not reduced, the rotating speed of the double-sliding-surface sealing body 2 in the single-sliding-surface supporting component is reduced or even completely stopped; the arrangement is that the total rotation amount of the rotating shaft 10 in the double-sliding-surface sealing body 2 is shared by the rotation of the double-sliding-surface sealing body 2 in the single-sliding-surface supporting assembly, so that the abrasion of the rotating shaft 10 to the double-sliding-surface sealing body 2 when the rotating shaft rotates completely in the double-sliding-surface sealing body 2 can be obviously reduced, and the service life of the whole sealing element is prolonged.
The following is a further improvement that,
as shown in fig. 2 and 3, the double sliding surface sealing body 2 has a flange-shaped support edge 22 provided on the outer peripheral surface of the front end of the sealing sliding sleeve 21; the inner peripheral surface of the front end of the sealing sliding sleeve 21 is a dustproof surface 23 attached to the rotating shaft 10, the inner peripheral surface of the rear end of the sealing sliding sleeve 21 is an oil cover 24 attached to the rotating shaft 10, and a concave surface which is spaced from the rotating shaft 10 is arranged between the dustproof surface 23 and the oil cover 24. The actual longitudinal length of the sealing sliding sleeve 21 is obviously increased compared with the conventional oil seal, which is the requirement of the overall arrangement of the utility model, and the requirement can be embodied in the later further arrangement. Based on the increase of the longitudinal length, the width of the dustproof surface 23 can be larger than the width of a dustproof lip of a traditional oil seal, and a better dustproof effect can be obtained. Meanwhile, the width of the oil seal surface 24 is larger than that of the traditional oil seal lip, and better oil seal effect can be obtained.
As shown in fig. 2 and 4, the single-sliding-surface support assembly includes an elastic sealing outer ring 3 located at the periphery of the single-sliding-surface support assembly, and the outer peripheral surface of the single-sliding-surface support assembly is sleeved on the inner wall of the transmission shaft hole 11 and is in fit sealing with the inner wall of the transmission, that is, the outer peripheral surface of the sealing outer ring 3 is sleeved on the inner wall of the transmission shaft hole 11 and is in fit sealing with the inner wall of the transmission. The sealing outer ring 3 is a fixed sealing member arranged between the single-sliding-surface support assembly and the shaft hole 11, and the main purpose of the sealing outer ring is to make the inner circumferential surface of the sealing outer ring 3 a good sealing contact surface, so as to facilitate the contact of components in the sealing outer ring 3 and obtain a reliable sealing effect.
As shown in fig. 2, 3 and 5, the single-sliding-surface support assembly further comprises a rigid support edge 4, wherein the support edge 4 comprises a rigid ring 41 and an inner limiting edge 42 which is turned radially inwards at the front end of the rigid ring 41 and is integrally formed with the rigid ring 41; the supporting edge 4 is sleeved at the front end in the sealing outer ring 3 and keeps relatively static with the sealing outer ring 3, so that the supporting edge 4 is mainly limited to axially slide in the sealing outer ring 3; the inner peripheral surface of the rigid ring 41 of the supporting edge is attached to the outer peripheral surface of the supporting edge 22 of the double-sliding-surface sealing body, and the rear end surface of the inner limiting edge 42 of the supporting edge is attached to the outer front end surface of the supporting edge 22 of the double-sliding-surface sealing body; the double-sliding-surface sealing body can be limited in the single-sliding-surface supporting assembly by the arrangement, and the double-sliding-surface sealing body is prevented from being forwards separated from the single-sliding-surface supporting assembly; the support edge 22 of the double-slide seal body can rotate in the support edge 4. The dual slide seal body 2 is rotatable with the shaft 10 in the single slide support assembly to include the rotation of the support edge 22 of the dual slide seal body in the support edge 4 of the single slide support assembly.
As shown in fig. 4 and 5, the front end of the seal outer ring 3 is provided with a radially outward protruding limit flange 31 integrally formed with the seal outer ring 3, and the limit flange 31 is provided with a caulking groove 32 opened on the inner peripheral surface of the limit flange 31; the supporting edge 4 further comprises a limiting outer edge 43 which is radially and outwardly folded at the front end of the rigid ring 41 and is integrally formed with the rigid ring 41; the limiting outer edge 43 of the supporting edge 4 is embedded in the embedding groove 32 of the limiting flange 31 of the sealing outer ring 3. In order to firmly limit the whole oil seal at a position between the rotating shaft 10 and the shaft hole 11 of the reducer housing, a limit groove is provided on the reducer housing at the periphery of the shaft hole 11, and the limit flange 31 is installed in the limit groove.
As shown in fig. 3 and 6, the single-sliding-surface support assembly further comprises an elastic retainer 5, and the retainer 5 is located between the seal outer ring 3 and the seal sliding sleeve 21 of the double-sliding-surface seal body 2; the retainer 5 is provided with an annular split slot 51 opened at the rear end face, an outer support ring 52 is arranged outside the split slot 51, the outer peripheral surface of the outer support ring 52 is attached to the inner peripheral surface of the sealing outer ring 3, an inner support ring 53 is arranged inside the split slot 51, the inner peripheral surface of the inner support ring 53 is attached to the outer peripheral surface of the sealing sliding sleeve 21 of the double-sliding-surface sealing body 2, and the sealing sliding sleeve 21 of the double-sliding-surface sealing body 2 can slide on the inner peripheral surface of the retainer inner support ring 53. The double-sliding-surface sealing body 2 can rotate along with the rotating shaft 10 in the single-sliding-surface supporting assembly, so that the sealing sliding sleeve 21 comprising the double-sliding-surface sealing body can slide on the inner circumferential surface of the supporting ring 53 in the holder 5. The main function of the retainer 5 is to keep the inherent distance between the sealing outer ring 3 and the sealing sliding sleeve 21 all the time so as to ensure the sealing effect of the whole oil seal.
As shown in fig. 2 and 6, a tension spring 6 is provided in the holder 5. The installation position is located on the outer circumferential surface of the inner support ring 53 which can tightly hold the oil seal surface 24 of the double-sliding-surface sealing body on the rotating shaft 10. The function is to keep the oil cover 24 of the double-sliding-surface sealing body tightly holding the rotating shaft 10 through the tension spring 6 to prevent oil leakage.
As shown in fig. 1, 2, 3 and 6, a space is formed between the retainer 5 and the support edge 22 of the double sliding surface sealing body to form a grease storage cavity 7 for filling lubricating grease, and the grease filled in the grease storage cavity 7 forms a grease seal 8 located on the sealing outer ring 3 and the sealing sliding sleeve 21 of the double sliding surface sealing body 2. The grease seal ring 8 is not only lubricating grease stored in the whole oil seal, but also a good oil-blocking leakproof seal body, and an oil-blocking barrier is directly formed between the seal outer ring 3 and the double-sliding-surface seal body 2.
The outer peripheral face of the sealing sliding sleeve 21 between the inner supporting ring 53 of the retainer 5 and the sealing sliding sleeve 21 of the double-sliding-surface sealing body is provided with an annular embedding groove 25, a friction-resistant annular grease-impregnated pad 9 is arranged in the embedding groove 25, the front end of the grease-impregnated pad 9 is in contact with the grease sealing ring 8, and the grease-impregnated pad 9 rotates along with the double-sliding-surface sealing body. The grease-impregnated pad 9 is a sealing pad and a lubricating pad, can continuously obtain grease compensation from the grease sealing ring 8, and keeps the grease-impregnated pad 9 and the oil cover 24 of the rear double-sliding-surface sealing body to have good lubricating performance.
As shown in fig. 1, 2 and 5, in the whole process oil seal 1, except that the supporting edge 4 is a rigid component, the rest are elastic components, and the thickness of the overlapped elastic components (the distance between the outer peripheral surface of the rotating shaft 10 and the inner peripheral surface of the shaft hole 11) is much larger than that of a traditional single elastic component, so that the output shaft can reach a deflection angle of 5 degrees in the process oil seal, and in practical application, after a contact gap is generated due to abrasion, the two rotating shafts in spline fit butt joint can still keep good contact fit, and normal power transmission is maintained.
The above embodiments are only for the purpose of more clearly describing the invention and should not be considered as limiting the scope of protection covered by the invention, any modification of the equivalent should be considered as falling within the scope of protection covered by the invention.
Claims (9)
1. A rotatable technology oil blanket of derailleur which characterized in that: the double-sliding-surface sealing structure comprises a round sleeve-shaped double-sliding-surface sealing body (2) with an inner circumferential surface and an outer circumferential surface capable of sliding, and a single-sliding-surface supporting assembly sleeved on the outer circumferential surface of the double-sliding-surface sealing body (2), wherein the double-sliding-surface sealing body (2) is sleeved on a rotating shaft (10), and the outer circumferential surface of the single-sliding-surface supporting assembly is sleeved on the inner wall of a transmission shaft hole (11), is attached and sealed with the inner wall of a transmission, and keeps relatively static with the inner wall of; the rotating shaft (10) can rotate in the double-sliding-surface sealing body (2); the double-sliding-surface sealing body (2) can rotate together with the rotating shaft (10) in the single-sliding-surface supporting assembly.
2. The rotatable process oil seal of a transmission of claim 1, wherein: the double-sliding-surface sealing body (2) is provided with a sealing sliding sleeve (21) and a flange-shaped supporting edge (22) arranged on the outer peripheral surface of the front end of the sealing sliding sleeve (21); the inner peripheral surface of sealed sliding sleeve (21) front end is dustproof face (23) with pivot (10) laminating, the inner peripheral surface of sealed sliding sleeve (21) rear end is oil cover (24) with pivot (10) laminating, be between dustproof face (23) and oil cover (24) and pivot (10) between gapped concave face.
3. The rotatable process oil seal of a transmission of claim 2, wherein: the single-sliding-surface supporting component comprises an elastic sealing outer ring (3) which is arranged on the periphery of the single-sliding-surface supporting component, and the outer peripheral surface of the single-sliding-surface supporting component is sleeved on the inner wall of the transmission shaft hole (11) and is in fit sealing with the inner wall of the transmission, namely the outer peripheral surface of the sealing outer ring (3) is sleeved on the inner wall of the transmission shaft hole (11) and is in fit sealing with the inner wall of the transmission.
4. The rotatable process oil seal of a transmission of claim 3, wherein: the single-sliding-surface supporting assembly further comprises a rigid supporting edge (4), wherein the supporting edge (4) comprises a rigid ring (41) and an inner limiting edge (42) which is radially and inwardly turned at the front end of the rigid ring (41) and is integrally formed with the rigid ring (41); the supporting edge (4) is sleeved at the front end in the sealing outer ring (3) and keeps relatively static with the sealing outer ring (3), the inner peripheral surface of a rigid ring (41) of the supporting edge is attached to the outer peripheral surface of the supporting edge (22) of the double-sliding-surface sealing body, the rear end surface of an inner limiting edge (42) of the supporting edge is attached to the outer front end surface of the supporting edge (22) of the double-sliding-surface sealing body, and the supporting edge (22) of the double-sliding-surface sealing body can rotate in the supporting edge (4).
5. The rotatable process oil seal of a transmission of claim 4, wherein: the front end of the sealing outer ring (3) is provided with a radially outward protruding limit flange (31) which is integrally formed with the sealing outer ring (3), and the limit flange (31) is provided with an embedding groove (32) which is opened on the inner circumferential surface of the limit flange (31); the supporting edge (4) also comprises a limiting outer edge (43) which is radially and outwards folded at the front end of the rigid ring (41) and is integrally formed with the rigid ring (41); the limiting outer edge (43) of the supporting edge (4) is embedded into the embedding groove (32) of the limiting flange (31) of the sealing outer ring (3).
6. The rotatable process oil seal of a transmission of claim 4, wherein: the single-sliding-surface supporting assembly further comprises an elastic retainer (5), and the retainer (5) is positioned between the sealing outer ring (3) and the sealing sliding sleeve (21) of the double-sliding-surface sealing body (2); the retainer (5) is provided with an annular dividing groove (51) with an opening at the rear end face, an outer supporting ring (52) is arranged outside the dividing groove (51), the outer peripheral face of the outer supporting ring (52) is attached to the inner peripheral face of the sealing outer ring (3), an inner supporting ring (53) is arranged inside the dividing groove (51), the inner peripheral face of the inner supporting ring (53) is attached to the outer peripheral face of the sealing sliding sleeve (21) of the double-sliding-face sealing body (2), and the sealing sliding sleeve (21) of the double-sliding-face sealing body (2) can slide on the inner peripheral face of the supporting ring (53) in the retainer.
7. The rotatable process oil seal of a transmission of claim 6, wherein: the oil seal structure is characterized in that a tension spring is arranged in the retainer (5), and the arrangement position of the tension spring is located on the outer peripheral surface of an inner support ring (53) which can hold the oil seal surface (24) of the double-sliding-surface sealing body tightly on the rotating shaft (10).
8. The rotatable process oil seal of a transmission of claim 7, wherein: and a space is reserved between the retainer (5) and the supporting edge (22) of the double-sliding-surface sealing body to form a grease storage cavity (7) for filling lubricating grease, and grease filled in the grease storage cavity (7) forms a grease sealing ring (8) for sealing the outer ring (3) and the sealing sliding sleeve (21) of the double-sliding-surface sealing body (2).
9. The rotatable process oil seal of a transmission of claim 8, wherein: the outer peripheral face of a sealing sliding sleeve (21) between an inner supporting ring (53) of the retainer (5) and the sealing sliding sleeve (21) of the double-sliding-surface sealing body is provided with an annular embedding groove (25), a friction-resistant annular grease-impregnated pad (9) is arranged in the embedding groove (25), the front end of the grease-impregnated pad (9) is in contact with a grease sealing ring (8), and the grease-impregnated pad (9) rotates along with the double-sliding-surface sealing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021044274.8U CN212690777U (en) | 2020-06-09 | 2020-06-09 | Rotatable technological oil seal of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021044274.8U CN212690777U (en) | 2020-06-09 | 2020-06-09 | Rotatable technological oil seal of transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212690777U true CN212690777U (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021044274.8U Active CN212690777U (en) | 2020-06-09 | 2020-06-09 | Rotatable technological oil seal of transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212690777U (en) |
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2020
- 2020-06-09 CN CN202021044274.8U patent/CN212690777U/en active Active
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