CN212672249U - Spline hub bearing with high sealing performance - Google Patents
Spline hub bearing with high sealing performance Download PDFInfo
- Publication number
- CN212672249U CN212672249U CN202021245246.2U CN202021245246U CN212672249U CN 212672249 U CN212672249 U CN 212672249U CN 202021245246 U CN202021245246 U CN 202021245246U CN 212672249 U CN212672249 U CN 212672249U
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- spline
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- interference fit
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 238000010030 laminating Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 239000011499 joint compound Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004519 grease Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a spline hub bearing of high leakproofness, including wheel hub, the outer lane, left side inner circle, right side inner circle and connector, the inboard both ends of outer lane are equipped with first step and second step respectively, the inboard fixed mounting of first step has left sealing washer, left sealing washer includes first skeleton and fixed mounting in the first seal lip and the arc seal lip of first skeleton, the axial surface interference fit of the first skeleton outside and first step, the radial face of the first step of right side laminating of first skeleton, first seal lip left side and wheel hub's right side interference fit, the left side of protruding portion forms the shoulder along radially extending to the outside, the shoulder axial surface outside is equipped with a plurality of arc walls that equal and the position corresponds with arc seal lip quantity, arc seal lip forms labyrinth seal with the arc wall cooperation. The utility model discloses a labyrinth seal does not need the lubrication, and no friction has good sealing performance under high-speed condition.
Description
Technical Field
The utility model relates to a wheel hub bearing technical field especially relates to a spline wheel hub bearing of high leakproofness.
Background
The main function of the hub bearing is to bear load and provide precise guidance for the rotation of the hub, and the hub bearing bears axial load and radial load and is a very important part. The hub bearing is very close to the ground and parts such as a brake disc with high temperature and the like, so that the hub bearing is required to adapt to various complex road conditions and severe driving environments. Therefore, the bearing sealing ring must have good grease leakage resistance, and must also have good heat resistance, mud resistance and sewage resistance. At present, most of sealing rings of hub bearings are used for a long time, the rubber sealing lips are easily abraded due to long-time friction, the sealing performance is reduced, and impurities such as water, dust, mud and the like can enter the inside of the bearing, so that the service life of the hub bearing is influenced.
In addition, the hub bearing and the connecting body of the driving shaft are in smooth surface contact, so that the hub bearing may not have time to rotate synchronously with the driving shaft when the vehicle is accelerated suddenly, and the slip risk exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a spline wheel hub bearing of high leakproofness, adopt labyrinth seal, do not need the lubrication, have good sealing performance under high-speed condition, the connector of drive shaft passes through spline fit with wheel hub and is connected, ensures wheel hub and drive shaft synchronous revolution.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a spline hub bearing with high sealing performance comprises a hub, an outer ring, a left inner ring, a right inner ring and a connector, wherein the middle level of the hub extends rightwards to form a protruding portion, the protruding portion is in a hollow cylindrical shape, the connector is fixedly installed on the right side of the protruding portion through bolts, the left inner ring and the right inner ring are in interference fit with the outer side of the protruding portion, the outer ring is arranged on the outer side of the left inner ring and the outer side of the right inner ring, a circle of rolling bodies are respectively arranged between the outer ring and the left inner ring and between the outer ring and the right inner ring, the two ends of the inner side of the outer ring are respectively provided with a first step and a second step, the first step is located on the left side of the outer ring, the second step is located on the right side of the outer ring, a left sealing ring is fixedly installed on the inner side of the first step, a right sealing, the outer side of the first framework is in interference fit with the axial surface of the first step, the right side of the first framework is attached to the radial surface of the first step, the left side of the first sealing lip is in interference fit with the right side of the hub, the left side of the protruding part extends outwards along the radial direction to form a shoulder part, a plurality of arc grooves which are equal to the arc sealing lips in number and correspond to the arc sealing lips in position are arranged on the outer side of the axial surface of the shoulder part, the arc-shaped sealing lip is matched with the arc-shaped groove to form labyrinth seal, the right sealing ring comprises a second framework, a second sealing lip and a third sealing lip which are fixedly arranged on the second framework, the left side of the second framework is attached to the radial surface of the second step, the outer side of the second framework is in interference fit with the axial surface of the second step, the inner side of the second sealing lip is in interference fit with the outer side of the right inner ring, the middle of the left side of the connector horizontally extends leftwards to form a first end face, and the right side of the third sealing lip is in interference fit with the first end face.
The middle of the left side of the first end face horizontally extends leftwards to form a second end face, the middle of the left side of the second end face horizontally extends leftwards to form a third end face, the third end face is attached to the right end face of the protruding portion, the middle of the third end face extends leftwards to form a boss, a spline is circumferentially arranged on the outer side of the boss, a reverse spline is circumferentially arranged on the inner side of the right end of the protruding portion, and the spline is in matched connection with the reverse spline.
And a second protrusion extending leftwards is arranged on the left side of the second end face, a second groove matched with the second protrusion is arranged on the right side of the right inner ring, and the second protrusion is matched with and extends into the second groove.
The right side face of the shoulder is provided with a first protrusion extending rightwards, the left side of the left inner ring is provided with a first groove matched with the first protrusion, and the first protrusion is matched with the first groove to extend into the first groove.
The middle of the boss is provided with a fixing hole, and one end of the bolt penetrates through the hub and extends into the fixing hole to be in threaded connection with the boss.
The utility model has the advantages that: the spline and the reverse spline are meshed to synchronize the rotation of the connector and the hub, so that the circumferential fixation of the connector and the hub is realized; the labyrinth seal is adopted between the hub and the outer ring, so that the lubrication is not needed, the sealing effect is good, and the service life of the bearing is long; the first bulges enable the rotation of the hub and the left inner ring to be synchronized, and the second bulges enable the rotation of the connecting body and the right inner ring to be synchronized, so that the stability of the bearing during operation is ensured.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is a side view of the connector;
fig. 5 is a side view of the hub.
In the figure: the sealing structure comprises a hub 1, a shoulder 11, a first protrusion 12, an arc-shaped groove 13, a protruding part 14, a reverse spline 15, an outer ring 2, a first step 21, a second step 22, a left inner ring 3, a groove 31, a right inner ring 4, a second groove 41, a rolling body 5, a bolt 6, a left sealing ring 7, a first framework 71, a first sealing lip 72, an arc-shaped sealing lip 73, a right sealing ring 8, a second framework 81, a second sealing lip 82, a third sealing lip 83, a connecting body 9, a first end face 91, a second end face 92, a third end face 93, a boss 94, a fixing hole 95, a second protrusion 96 and a spline 97.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1 to 5, a spline hub bearing with high sealing performance comprises a hub 1, an outer ring 2, a left inner ring 3, a right inner ring 4 and a connector 9, wherein the middle of the hub 1 horizontally extends to the right to form a protrusion 14, the protrusion 14 is in a hollow cylindrical shape, the connector 9 is fixedly mounted on the right side of the protrusion 14 through a bolt 6, the right side of the connector 9 is connected with a driving shaft, the middle of the left side of the connector 9 horizontally extends to the left to form a first end surface 91, the middle of the left side of the first end surface 91 horizontally extends to the left to form a second end surface 92, the middle of the left side of the second end surface 92 horizontally extends to the left to form a third end surface 93, the third end surface 93 is attached to the right end surface of the protrusion 14, the middle of the third end surface 93 horizontally extends to form a boss 94, a spline 97 is circumferentially arranged on the outer side of, the spline 97 is connected with the reverse spline 15 in a matching mode, the spline 97 can transmit torque, the rotation of the connecting body 9 and the hub 1 can be synchronized through meshing of the reverse spline 15 and the spline 97, the right side of the connecting body 9 is connected with the driving shaft, and therefore when the driving shaft rotates, the hub 1 can also rotate synchronously.
The middle of the boss 94 is provided with a fixing hole 95, and one end of the bolt 6 penetrates through the hub 1 and extends into the fixing hole 95 to be in threaded connection with the boss 94.
The left inner ring 3 and the right inner ring 4 are in interference fit with the outer sides of the protruding portions 14, the outer ring 2 is arranged on the outer sides of the left inner ring 3 and the right inner ring 4, and a circle of rolling body 5 is arranged between the outer ring 2 and each of the left inner ring 3 and the right inner ring 4.
The inboard both ends of outer lane 2 are equipped with first step 21 and second step 22 respectively, first step 21 is located the outer lane 2 left side, second step 22 is located the outer lane 2 right side, the inboard fixed mounting of first step 21 has left sealing washer 7, the inboard fixed mounting of second step 22 has right sealing washer 8, left sealing washer 7 includes first skeleton 71 and fixed mounting in the first seal lip 72 and the arc seal lip 73 of first skeleton 71, the axial face interference fit of the first skeleton 71 outside and first step 21, the radial face of the first step 21 of the right side laminating of first skeleton 71, the right side interference fit of first seal lip 72 left side and wheel hub 1, first seal lip 72 is as first protection, blocks inside impurity such as external water, dust and mud gets into the bearing, the left side of protruding portion 14 extends radially outwards to form shoulder 11, the outer side of the axial surface of the shoulder part 11 is provided with a plurality of arc-shaped grooves 13 which are equal in number and correspond to the arc-shaped sealing lips 73 in position, the arc-shaped sealing lips 73 are matched with the arc-shaped grooves 13 to form labyrinth seal, the labyrinth seal has no friction, no lubrication is needed, and the labyrinth seal has good sealing performance under a high-speed condition.
Right side sealing washer 8 includes second skeleton 81 and fixed mounting in second seal lip 82 and the third seal lip 83 of second skeleton 81, second skeleton 81 is the L type, second seal lip 82 and third seal lip 83 are the Y type, second skeleton 81 left side laminating second step 22 radial face, the second skeleton 81 outside and the interference fit of second step 22 axial face, the inboard and 4 outside interference fit of right inner circle of second seal lip 82, the right side of third seal lip 83 with first terminal surface 91 interference fit, the lower extreme of third seal lip 83 is equipped with a recess, and the existence of this recess makes third seal lip 83 take place deformation more easily, has increased sealed effect.
The left side of the second end face 92 is provided with a second protrusion 96 extending leftwards, the right side of the right inner ring 4 is provided with a second groove 41 matched with the second protrusion 96, the second protrusion 96 and the second groove 41 are respectively provided with two and symmetrically arranged, the second protrusion 96 is matched with and extends into the second groove 41, the design can synchronize the rotation of the connector 9 and the right inner ring 4, and the connector 9 and the right inner ring 4 are not easy to slide relatively.
During assembly, the rolling bodies 5 are firstly installed on the inner side of the outer ring 2, then the left inner ring 3 is installed from the left side, the right inner ring 4 is installed from the right side, then the left sealing ring 7 and the right sealing ring 8 are respectively installed from the left side and the right side of the bearing until the right side of the first framework 71 is attached to the radial surface of the first step 21, the left side of the second framework 81 is attached to the radial surface of the second step 22, then the first protrusion 12 of the hub 1 is aligned to the first groove 31 and installed from the left side, the second protrusion 96 of the connecting body 9 is aligned to the second groove 41 and installed from the right side until the third end surface 93 is attached to the right end surface of the protruding portion 14, finally the bolt 6 penetrates through the hub 1 from the left side to be in threaded connection with.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a spline hub bearing of high leakproofness, includes wheel hub (1), outer lane (2), left inner circle (3), right inner circle (4) and connector (9), its characterized in that: the middle level of the wheel hub (1) extends rightwards to form a protruding part (14), the protruding part (14) is in a hollow cylindrical shape, the connecting body (9) is fixedly installed on the right side of the protruding part (14) through a bolt (6), a left inner ring (3), a right inner ring (4) and the protruding part (14) are in interference fit, the outer ring (2) is arranged on the outer side of the left inner ring (3) and the right inner ring (4), a circle of rolling bodies (5) are respectively arranged between the outer ring (2) and the left inner ring (3) and between the right inner ring (4), a first step (21) and a second step (22) are respectively arranged at two ends of the inner side of the outer ring (2), the first step (21) is located on the left side of the outer ring (2), the second step (22) is located on the right side of the outer ring (2), a left sealing ring (7) is fixedly installed on the inner side of the first step (21), and a right sealing ring, the left sealing ring (7) comprises a first framework (71) and a first sealing lip (72) and an arc-shaped sealing lip (73) which are fixedly installed on the first framework (71), the outer side of the first framework (71) is in interference fit with the axial surface of the first step (21), the right side of the first framework (71) is attached to the radial surface of the first step (21), the left side of the first sealing lip (72) is in interference fit with the right side of the hub (1), the left side of the protruding part (14) extends to the outer side to form a shoulder part (11), the outer side of the axial surface of the shoulder part (11) is provided with a plurality of arc grooves (13) which are equal in number and correspond to the positions of the arc-shaped sealing lips (73), the arc-shaped sealing lips (73) are matched with the arc grooves (13) to form labyrinth sealing, the right sealing ring (8) comprises a second framework (81) and a second sealing lip (82) and a third sealing lip (83) which are fixedly installed on the second framework (81), second skeleton (81) left side laminating second step (22) radial face, second skeleton (81) outside and second step (22) axial face interference fit, second seal lip (82) inboard and right inner circle (4) outside interference fit, horizontal extension forms first terminal surface (91) to the left in the middle of the left side of connector (9), the right side of third seal lip (83) with first terminal surface (91) interference fit.
2. The high sealability spline hub bearing of claim 1 wherein: horizontal extension left in the middle of first terminal surface (91) left side forms second terminal surface (92), horizontal extension left in the middle of second terminal surface (92) left side forms third terminal surface (93), third terminal surface (93) laminating protruding portion (14) right-hand member face, extend left in the middle of third terminal surface (93) and form boss (94), boss (94) outside circumference is equipped with spline (97), protruding portion (14) right-hand member inboard circumference is equipped with reverse spline (15), spline (97) with reverse spline (15) cooperation is connected.
3. A high-sealability spline hub bearing according to claim 2, wherein: the left side of the second end face (92) is provided with a second protrusion (96) extending leftwards, the right side of the right inner ring (4) is provided with a second groove (41) matched with the second protrusion (96), and the second protrusion (96) is matched with and extends into the second groove (41).
4. The high sealability spline hub bearing of claim 1 wherein: shoulder (11) right flank is equipped with first arch (12) that extend right, the left side of left side inner circle (3) be equipped with first recess (31) of first arch (12) looks adaptation, first protruding (12) cooperation is stretched into first recess (31).
5. A high-sealability spline hub bearing according to claim 2, wherein: the middle of the boss (94) is provided with a fixing hole (95), and one end of the bolt (6) penetrates through the hub (1) and extends into the fixing hole (95) to be in threaded connection with the boss (94).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021245246.2U CN212672249U (en) | 2020-06-30 | 2020-06-30 | Spline hub bearing with high sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021245246.2U CN212672249U (en) | 2020-06-30 | 2020-06-30 | Spline hub bearing with high sealing performance |
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| Publication Number | Publication Date |
|---|---|
| CN212672249U true CN212672249U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021245246.2U Active CN212672249U (en) | 2020-06-30 | 2020-06-30 | Spline hub bearing with high sealing performance |
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| Country | Link |
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| CN (1) | CN212672249U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115479086A (en) * | 2022-08-29 | 2022-12-16 | 人本股份有限公司 | Labyrinth combination seal |
| WO2024193240A1 (en) * | 2023-03-23 | 2024-09-26 | 人本股份有限公司 | Bearing device having end surface teeth |
-
2020
- 2020-06-30 CN CN202021245246.2U patent/CN212672249U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115479086A (en) * | 2022-08-29 | 2022-12-16 | 人本股份有限公司 | Labyrinth combination seal |
| WO2024193240A1 (en) * | 2023-03-23 | 2024-09-26 | 人本股份有限公司 | Bearing device having end surface teeth |
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