CN219452880U - High-rigidity combined end face sealing device - Google Patents
High-rigidity combined end face sealing device Download PDFInfo
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- CN219452880U CN219452880U CN202320795103.6U CN202320795103U CN219452880U CN 219452880 U CN219452880 U CN 219452880U CN 202320795103 U CN202320795103 U CN 202320795103U CN 219452880 U CN219452880 U CN 219452880U
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Abstract
The utility model relates to a high-rigidity combined end face sealing device, which relates to the technical field of sealing, and comprises an inner framework, an outer framework, a rubber body and a supporting ring, wherein the inner framework is opposite to the outer framework in left and right, the rubber body extends to the outer surface of the outer framework from between the inner framework and the outer framework, the supporting ring is connected with the rubber body, the inner framework is provided with a horizontal part extending along the axial direction and a vertical part extending along the radial direction, one end of the horizontal part is provided with a first bending part facing one side of the outer framework, the other end of the horizontal part is connected with one end of the vertical part, and the inner framework is further provided with a second bending part. The high-rigidity combined end face sealing device has the advantages that the rigidity of the inner framework is high, and the deformation resistance capability is high.
Description
Technical Field
The utility model relates to the technical field of sealing, in particular to a high-rigidity combined end face sealing device.
Background
The patent with publication number CN218326198U discloses a low friction crankshaft oil seal of a commercial vehicle engine, and the oil seal is generally horizontally assembled when assembled on an engine crankshaft and an engine shell, and is assembled through integral press fitting of a special press fitting tool. Because the oil seal inner framework is in interference fit with the crankshaft, in the oil seal press fitting process, the inner framework and the crankshaft are eccentric to a certain extent due to the self dimensional tolerance and horizontal assembly of the inner framework, so that the stress is uneven during assembly, and the framework is easy to deform to a certain extent. Fig. 1 is an ideal assembly state of the oil seal, and fig. 2 is an actual assembly state of the oil seal.
If the deformation is serious, the flange surface of the inner framework is warped, so that the flange surface is not perpendicular to the axis of the crankshaft. When the inner framework rotates along with the crankshaft in operation, the flange surface of the inner framework swings at high frequency, and the swing amplitude is related to the warping degree of the flange surface of the framework. In this state, the air cushion pressure between the main seal lip and the flange face of the outer oil seal may vary considerably, and the severely varying pressure may cause the lubricant in the spiral groove to splash, thereby causing seal failure.
Disclosure of Invention
The utility model aims to: in order to overcome the defects in the prior art, the utility model provides a high-rigidity combined end face sealing device.
The technical scheme is as follows: in order to achieve the above object, the utility model provides a high-rigidity combined end face sealing device, which comprises an inner framework, an outer framework, a rubber body and a supporting ring, wherein the inner framework is opposite to the outer framework in left and right, the rubber body extends to the outer surface of the outer framework from between the inner framework and the outer framework, the supporting ring is connected with the rubber body, the inner framework is provided with a horizontal part extending along the axial direction and a vertical part extending along the radial direction, one end of the horizontal part is provided with a first bending part facing one side of the outer framework, and the other end of the horizontal part is connected with one end of the vertical part.
Preferably, the second bending part is arranged at the joint of the vertical part and the horizontal part.
Preferably, the second bending parts are U-shaped reinforcing ribs, and at least two second bending parts are circumferentially distributed in an array mode by taking the center of the inner framework as the center of the array.
Preferably, the second bending portion is disposed at an end of the vertical portion away from the horizontal portion.
Preferably, the second bending portion extends toward a side having the rubber body.
Preferably, the second fold extends away from the side with the rubber body.
Preferably, the second bending part is bent away from the vertical part to be attached to the vertical part.
The utility model relates to a high-rigidity combined end face sealing device, which has at least the following technical effects:
(1) The improved inner framework and shaft interference assembly can effectively resist the deformation capacity of the flange surface of the end surface of the framework to a certain extent caused by the uneven stress of the framework due to the self dimensional tolerance and horizontal assembly eccentricity of the inner framework in the oil seal press-fitting process. The situation that the flange surface is not perpendicular to the axis of the crankshaft due to the warping of the flange surface of the inner framework is reduced. Therefore, when the inner framework rotates along with the crankshaft in operation, the phenomenon that the sealing failure occurs due to the fact that the lubricating oil in the spiral groove of the main lip is splashed due to the fact that the air cushion pressure between the main sealing lip of the outer oil seal and the flange surface is changed severely due to high-frequency swing of the flange surface of the inner framework is avoided, and the sealing reliability of the end face oil seal is improved.
(2) Because the improved framework only improves the end face structure of the framework, compared with other improved schemes, the manufacturing process complexity is reduced, the manufacturing cost is also reduced, and the reliability and the product competitiveness of the oil seal product are improved.
Drawings
FIG. 1 is an ideal installation state of a conventional oil seal;
FIG. 2 shows a conventional oil seal in an actual installation state;
fig. 3 is a schematic structural view of embodiment 1;
fig. 4 is a schematic structural view of embodiment 2;
fig. 5 is a schematic structural view of embodiment 3;
fig. 6 is a schematic structural diagram of embodiment 4.
In the figure, 1, an endoskeleton; 2. an outer skeleton; 3. a rubber body; 4. a support ring; 5. a horizontal portion; 6. a vertical portion; 7. a first bending part; 8. a second bending part; 9. a first horizontal segment; 10. a second horizontal segment; 11. a first vertical section; 12. a second vertical section; 13. a third horizontal segment; 14. a fourth horizontal segment; 15. a third vertical section; 16. a fourth vertical section; 17. an inclined section.
Detailed Description
The principles and features of the present utility model are described below with reference to fig. 1 through 6, the examples being provided for illustration only and not for limitation of the scope of the utility model.
A high-rigidity combined end face sealing device comprises an inner framework 1, an outer framework 2, a rubber body 3 and a supporting ring 4.
The inner frame 1 has an L-shape, and the inner frame 1 has a horizontal portion 5 extending in the axial direction and a vertical portion 6 extending in the radial direction. One end of the horizontal portion 5 has a first bending portion 7 extending toward the outer frame 2 side, and the first bending portion 7 is perpendicular to the horizontal portion 5. The horizontal part 5 is divided into two sections, of which the first horizontal section 9, which is adjacent to the first bending part 7, and the second horizontal section 10, which is distant from the first bending part 7. The diameter at the first horizontal segment 9 is d 1 The diameter at the second horizontal segment 10 is d 2 Wherein d is 1 ＜d 2 . Likewise, the vertical portion 6 is divided into two sections, of which the section close to the horizontal portion 5 is a first vertical section 11 and the section far from the horizontal portion 5 is a second vertical section 12. The first vertical section 11 is remote from the exoskeleton 2 and the second vertical section 12 is close to the exoskeleton 2. The second horizontal segment 10 rounded off the first vertical segment 11. The exoskeleton 2 includes an integrally formed third horizontal segment 13, a fourth horizontal segment 14, a third vertical segment 15, a fourth vertical segment 16, and an inclined segment 17, where the third horizontal segment 13, the fourth horizontal segment 14, the third vertical segment 15, the inclined segment 17, and the fourth vertical segment 16 are sequentially connected. The third horizontal segment 13 has a diameter d 3 The fourth horizontal segment 14 has a diameter d 4 Wherein d is 4 ＜d 3 . The third vertical segment 15 is far away from the inner skeleton 1, the fourth vertical segmentThe straight segment 16 is adjacent to the inner skeleton 1.
The rubber body 3 is attached to the outer frame 2 and extends between the inner frame 1 and the outer frame 2. Specifically, the rubber body 3 is attached to the outer surfaces of the fourth horizontal section 14, the third vertical section 15, the inclined section 17 and the fourth vertical section 16, and the tip of the rubber body 3 extends to the inner surface to which the second vertical section 12 is attached.
The support ring 4 is connected to the rubber body 3, the support ring 4 being parallel opposite to the fourth vertical section 16.
Stiffness is an indicator of the ability of a metal material to resist elastic deformation when subjected to a force. The amount of stiffness is primarily dependent on the geometry and type of material of the part. Based on this, the rigidity of the inner frame 1 can be improved by improving the structural form of the inner frame 1 without changing the material of the inner frame 1. The improved scheme ensures that the sealing flange surface is perpendicular to the axis of the crankshaft by adding a second bending part 8 on the inner framework 1 to resist the elastic deformation of the inner framework 1 caused by assembly.
The following four embodiments are listed according to the shape and position of the second bending portion 8.
Example 1
The second bending portion 8 is arranged at the end of the vertical portion 6 remote from the horizontal portion 5, i.e. at the end of the second vertical section 12. The second bending part 8 is bent to the side away from the rubber body 3 until the second bending part 8 is attached to the vertical part 6.
Example 2
The second bending portion 8 is arranged at the end of the vertical portion 6 remote from the horizontal portion 5, i.e. at the end of the second vertical section 12. The second bending part 8 extends to the side away from the rubber body 3, and the second bending part 8 is perpendicular to the vertical part 6.
Example 3
The second bending portion 8 is arranged at the end of the vertical portion 6 remote from the horizontal portion 5, i.e. at the end of the second vertical section 12. The second bending portion 8 extends toward the side having the rubber body 3, and the second bending portion 8 is disposed perpendicular to the vertical portion 6.
Example 4
The second bending parts 8 are arranged at the joint of the vertical parts 6 and the horizontal parts 5, the second bending parts 8 are U-shaped reinforcing ribs, and the second bending parts 8 are circumferentially distributed in an array mode by taking the circle center of the inner framework 1 as the center of the array.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (7)
1. The utility model provides a high rigidity combination formula end face sealing device, includes inner frame (1), exoskeleton (2), rubber body (3) and supporting ring (4), the inner frame (1) is relative about with exoskeleton (2), rubber body (3) extend to the surface of exoskeleton (2) between inner frame (1) and exoskeleton (2), supporting ring (4) are connected with rubber body (3), inner frame (1) have horizontal portion (5) and the vertical portion (6) of radial extension along the axial extension, the one end of horizontal portion (5) has first bending portion (7) towards exoskeleton (2) one side, the other end of horizontal portion (5) links to each other with the one end of vertical portion (6), a serial communication port, inner frame (1) still is provided with second bending portion (8).
2. The high-rigidity combined end face sealing device according to claim 1, wherein the second bending portion (8) is arranged at a junction of the vertical portion (6) and the horizontal portion (5).
3. The high-rigidity combined end face sealing device according to claim 2, wherein the second bending parts (8) are U-shaped reinforcing ribs, and at least two second bending parts (8) are circumferentially distributed in an array with the center of the inner skeleton (1) as the center of the array.
4. The high-rigidity combined end face sealing device according to claim 1, wherein the second bent portion (8) is provided at an end of the vertical portion (6) remote from the horizontal portion (5).
5. The high-rigidity combined end face seal device according to claim 4, characterized in that the second folded portion (8) extends toward the side having the rubber body (3).
6. The high-rigidity combined end face seal arrangement according to claim 4, characterized in that the second fold (8) extends away from the side with the rubber body (3).
7. The high stiffness combined end face sealing device according to claim 4, characterized in that the second fold (8) is folded away to fit the upright (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320795103.6U CN219452880U (en) | 2023-04-12 | 2023-04-12 | High-rigidity combined end face sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320795103.6U CN219452880U (en) | 2023-04-12 | 2023-04-12 | High-rigidity combined end face sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219452880U true CN219452880U (en) | 2023-08-01 |
Family
ID=87417200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320795103.6U Active CN219452880U (en) | 2023-04-12 | 2023-04-12 | High-rigidity combined end face sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219452880U (en) |
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2023
- 2023-04-12 CN CN202320795103.6U patent/CN219452880U/en active Active
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