CN211398581U - Sealing device for input shaft of steering gear - Google Patents
Sealing device for input shaft of steering gear Download PDFInfo
- Publication number
- CN211398581U CN211398581U CN201922175943.9U CN201922175943U CN211398581U CN 211398581 U CN211398581 U CN 211398581U CN 201922175943 U CN201922175943 U CN 201922175943U CN 211398581 U CN211398581 U CN 211398581U
- Authority
- CN
- China
- Prior art keywords
- steering gear
- input shaft
- dustproof
- dust
- inner ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 239000000428 dust Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 241000976416 Isatis tinctoria subsp. canescens Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Abstract
The utility model discloses a sealing device for an input shaft of a steering gear, which relates to the technical field of sealing of steering gears, comprising a dust cover sleeved on the input shaft of the steering gear, wherein a steering gear shell extends into the dust cover, the dust cover comprises a dust-proof inner ring, a dust-proof outer ring and a dust-proof retaining ring which is connected with the dust-proof inner ring and the dust-proof outer ring into a whole, the dust-proof inner ring extends between the steering gear shell and the input shaft of the steering gear, and the dust-proof inner ring is pressed on the input shaft of the steering gear; the dustproof outer ring is pressed into the steering gear box body and is in interference fit with the steering gear box body. The utility model provides a problem that current steering gear input shaft sealing device became invalid easily.
Description
Technical Field
The utility model belongs to the technical field of the direction machine technique of sealing and specifically relates to a direction machine input shaft sealing device.
Background
The steering machine, also known as steering machine and steering gear, is an important part in the steering system of the automobile. In order to prevent dust or impurities from entering the steering gear box, sealing elements are usually mounted on the steering gear box and the input shaft for sealing protection. The input shaft sealing device of the existing automobile steering gear comprises a dust cover sleeved on the input shaft and a steering gear shell, the dust cover is made of rubber, the dust cover and the input shaft are in interference fit, a positioning groove embedded in the dust cover is arranged on the input shaft, and the dust cover and the steering gear shell need to be in small clearance fit because the steering gear input shaft and the steering gear shell rotate relatively. This kind of seal structure has the following disadvantages: 1. when the automobile wades for a long time or runs for a long time in an environment with high concentration of muddy water and dust, the muddy water or the dust can enter the bearing of the input shaft through a small gap between the dustproof cover and the steering gear box body and gather on the end surface of a sealing ring of the bearing, after the time is long, the sealing ring is worn and loses the sealing effect, the muddy water can rust the bearing, and the steering gear rotates to generate abnormal sound; 2. the dust cover made of rubber can be aged and deformed after being used for a period of time, so that the fit clearance between the dust cover and the steering gear box shell is easy to change, and even interference abnormal sound is generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steering gear input shaft sealing device, the easy problem that became invalid of current steering gear input shaft sealing device can be solved to this kind of device.
In order to solve the above problem, the utility model discloses a technical scheme is: the sealing device for the input shaft of the steering gear comprises a dust cover sleeved on the input shaft of the steering gear, wherein a steering gear shell extends into the dust cover, the dust cover comprises a dust-proof inner ring, a dust-proof outer ring and a dust-proof retaining ring which is connected with the dust-proof inner ring and the dust-proof outer ring into a whole, the dust-proof inner ring extends into a space between the steering gear shell and the input shaft of the steering gear, and the dust-proof inner ring is pressed on the input shaft of the steering gear through a self-tightening spring; the dustproof outer ring is pressed into the steering gear box body, and the dustproof outer ring is in interference fit with the steering gear box body.
In the technical solution of the sealing device for the input shaft of the steering gear box, the more specific technical solution may be as follows: a supporting frame is embedded in the dust cover.
Furthermore, the dustproof inner ring is provided with a sealing lip and a dustproof lip which are attached to the steering gear input shaft.
Furthermore, the sealing lip is located the dust lip is inboard, the dust lip outwards protrudes from the outer end face of the dust baffle ring.
Furthermore, an oil seal between the steering gear input shaft and the steering gear shell is a three-lip framework oil seal.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
1. the dustproof cover is in elastic compression fit with the steering gear input shaft and is in interference fit with the steering gear shell, so that dust or muddy water can be effectively prevented from entering the steering gear, and meanwhile, the input shaft can rotate relative to the dustproof cover to realize steering operation; the sealing is not easy to lose efficacy, the phenomenon of abnormal sound when muddy water enters the steering gear is avoided, the performance of the steering gear adapting to severe service environment is improved, and the service life of the steering gear is prolonged.
2. The supporting frame is embedded in the dust cover, so that the strength of the dust cover can be improved, the shape and the tension of the dust cover can be kept, and the service life of the dust cover can be prolonged.
3. The dust cover is provided with a sealing lip and a dust lip, and a three-lip skeleton oil seal is arranged between the input shaft and the shell, so that the sealing performance can be improved.
Drawings
FIG. 1 is a schematic view of the assembled structure of the sealing device for the input shaft of the steering gear.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
the sealing device for the input shaft of the steering gear box shown in fig. 1 mainly comprises a dust cover 2 and an oil seal 3, wherein the dust cover 2 is sleeved on the input shaft 1 of the steering gear box, a steering gear box 5 extends into the dust cover 2, and the oil seal 3 of the embodiment is a three-lip framework oil seal arranged between the steering gear box 5 and the input shaft 1 of the steering gear box. The dustproof cover 2 comprises a dustproof inner ring 2-2, a dustproof outer ring 2-3 and a dustproof baffle ring 2-1 which is connected with the dustproof inner ring 2-2 and the dustproof outer ring 2-3 into a whole, the dustproof inner ring 2-2 and the dustproof outer ring 2-3 are perpendicular to the dustproof baffle ring 2-1, and the dustproof inner ring 2-2 and the dustproof outer ring 2-3 are coaxially arranged with the steering gear input shaft 1. The inner wall of the dustproof inner ring 2-2 is sleeved with a self-tightening spring 3, and the dustproof inner ring 2-2 is tightly pressed on the steering gear input shaft 1 under the elastic force action of the self-tightening spring 3, so that the dustproof cover 2 and the steering gear input shaft 1 are sealed; and a limiting lug 2-23 which protrudes outwards in the radial direction is arranged at the free end of the inner wall of the dustproof inner ring 2-2 and is used for limiting the position of the self-tightening spring 3. The outer wall of the dustproof inner ring 2-2 is provided with a dustproof lip 2-21 and a sealing lip 2-22, the dustproof lip 2-21 and the sealing lip 2-22 are in arc transition, the sealing lip 2-22 is positioned on the inner side of the dustproof lip 2-21 and close to a shoulder of the steering gear input shaft 1, and the dustproof lip 2-21 protrudes outwards from the outer end face of the dustproof baffle ring 2-1; the contact area of the sealing lips 2-22 and the steering gear input shaft 1 is larger than that of the dust-proof lips 2-21 and the steering gear input shaft 1. The dustproof inner ring 2-2 extends into the space between the steering gear case 5 and the steering gear input shaft 1, so that the dustproof inner ring 2-2 can be protected when the dustproof cover 2 is impacted, the dustproof inner ring 2-2 is always kept in a state of being attached to the steering gear input shaft 1, and the sealing performance is effectively improved. The dustproof outer ring 2-3 is pressed into the outer wall of the steering gear box body 5 and is in interference fit with the steering gear box body 5, and the sealing performance between the dustproof outer ring 2-3 and the steering gear box body 5 is guaranteed. The dust cover 2 of this embodiment is made of rubber or silica gel, and in order to improve the strength of the cover body, a support frame 6 is embedded in the dust cover 2, and the support frame 6 is bent from the near-free end of the dust-proof outer ring 2-3 along the axial direction to the corner of the dust-proof retainer ring 2-1, and extends inwards to the inside of the dust-proof inner ring 2-2 along the radial direction in the dust-proof retainer ring 2-1.
The sealing device for the input shaft of the steering gear changes the relative motion relation among the dust cover 2, the input shaft 1 of the steering gear and the steering gear shell 5, and the dust cover 2 and the steering gear shell 5 are in interference fit without relative motion, so that the sealing property is kept; the dustproof cover 2 is elastically connected with the steering gear input shaft 1, so that the sealing performance can be kept, the steering gear input shaft 1 can rotate relative to the dustproof cover 2, and the steering operation is realized. The multi-lip-shaped sealing structure effectively improves the sealing reliability, prolongs the service life and ensures the long-term normal working state of the steering gear box.
Claims (5)
1. The utility model provides a direction machine input shaft sealing device, includes the dust cover of suit on the direction machine input shaft, the direction machine casing stretches into in the dust cover, its characterized in that: the dustproof cover comprises a dustproof inner ring, a dustproof outer ring and a dustproof baffle ring which is connected with the dustproof inner ring and the dustproof outer ring into a whole, the dustproof inner ring extends into a position between the steering gear casing and the steering gear input shaft, and the dustproof inner ring is pressed against the steering gear input shaft through a self-tightening spring; the dustproof outer ring is pressed into the steering gear box body, and the dustproof outer ring is in interference fit with the steering gear box body.
2. The steering gear input shaft seal arrangement of claim 1, wherein: a supporting frame is embedded in the dust cover.
3. The steering gear input shaft seal arrangement of claim 2, wherein: the dustproof inner ring is provided with a sealing lip and a dustproof lip which are tightly attached to the input shaft of the steering gear box.
4. The steering gear box input shaft seal assembly of claim 3, wherein: the sealing lip is located the dust lip is inboard, the dust lip outwards protrudes in the outer terminal surface of dustproof fender ring.
5. The steering gear input shaft seal according to any one of claims 1 to 4, wherein: the oil seal between the steering gear input shaft and the steering gear shell is a three-lip framework oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922175943.9U CN211398581U (en) | 2019-12-06 | 2019-12-06 | Sealing device for input shaft of steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922175943.9U CN211398581U (en) | 2019-12-06 | 2019-12-06 | Sealing device for input shaft of steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398581U true CN211398581U (en) | 2020-09-01 |
Family
ID=72231005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922175943.9U Expired - Fee Related CN211398581U (en) | 2019-12-06 | 2019-12-06 | Sealing device for input shaft of steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398581U (en) |
-
2019
- 2019-12-06 CN CN201922175943.9U patent/CN211398581U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211398581U (en) | Sealing device for input shaft of steering gear | |
| CN113464564A (en) | High-performance labyrinth low-torque magnetic sealing assembly | |
| CN202048205U (en) | Oil seal with oil block structure | |
| CN202413342U (en) | Balanced suspension assembly | |
| CN211175029U (en) | Sealed dustproof combination formula bearing seal structure | |
| CN211082583U (en) | Bearing with sealing structure | |
| CN202228681U (en) | Combined oil seal | |
| CN202140575U (en) | Assembly type oil seal | |
| CN210129789U (en) | Rotary sealing element protection structure | |
| CN103075436A (en) | Universal joint of long-life wear-resisting stamping bearing structure | |
| CN201651324U (en) | Seal ring | |
| CN208198006U (en) | Drive axle wheel hub oil seal protects structure | |
| CN201496557U (en) | Ocv oil seal | |
| CN201818702U (en) | Dust-proof oil seal vibration damper | |
| CN209683339U (en) | The mounting structure of hub oil seal | |
| CN110886782A (en) | Sealed dustproof combined bearing sealing structure | |
| CN201110378Y (en) | Improved hub oil seal of drive bridge assembly | |
| CN209943519U (en) | Sealing structure for hub | |
| CN218440630U (en) | High-rotation-speed hub oil seal structure | |
| CN216975780U (en) | High-efficiency shaft surface oil seal | |
| CN213064619U (en) | High-protection shaft surface oil seal | |
| CN209856241U (en) | Sealing mechanism for cylindrical roller bearing | |
| CN210318440U (en) | Oil seal sealing structure and transmission | |
| CN215861353U (en) | High performance labyrinth low torque magnetic seal assembly | |
| CN220082058U (en) | Motor lead screw protection device and linear motor with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |