CN217874177U - Steering gear, front steering system and vehicle - Google Patents
Steering gear, front steering system and vehicle Download PDFInfo
- Publication number
- CN217874177U CN217874177U CN202222184135.0U CN202222184135U CN217874177U CN 217874177 U CN217874177 U CN 217874177U CN 202222184135 U CN202222184135 U CN 202222184135U CN 217874177 U CN217874177 U CN 217874177U
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- Prior art keywords
- annular
- input shaft
- groove
- sensor cover
- annular groove
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- 239000004519 grease Substances 0.000 claims abstract description 29
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 abstract description 17
- 238000007789 sealing Methods 0.000 abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Abstract
The utility model relates to a vehicle technical field discloses a steering gear, leading a steering system and vehicle, and the steering gear includes: the device comprises an input shaft, a sensor cover, a protective sleeve and a dustproof seal; the input shaft penetrates through the sensor cover, and the protective sleeve is sleeved on the input shaft; the sensor cover is provided with an annular groove surrounding the input shaft, grease is filled in the annular groove, the protective sleeve is provided with an annular boss, and the annular boss is coaxially matched in the annular groove and is immersed in the grease. In the steering gear, the annular boss of the protective sleeve is matched in the annular groove and immersed in grease in the groove, the grease seals a gap between the annular boss and the annular groove, and external dust and moisture cannot enter the gap between the input shaft and the sensor cover; and because the annular boss is matched with the annular groove, grease is filled in the annular groove, and the annular boss cannot be blocked relative to the annular groove on the premise of keeping sealing.
Description
Technical Field
The utility model relates to a vehicle technical field, in particular to steering gear, leading a steering system and vehicle.
Background
Due to the limitation of the arrangement of the power and transmission systems of the automobile, particularly the arrangement of a motor of a new energy automobile and the influence of a longitudinally arranged engine, a steering gear needs to be arranged in front of a driving shaft (namely a front steering gear), so that a sealing cover of the steering system and a front panel of an automobile body needs to be assembled on a middle shaft of a steering column, the dust and water prevention of the steering gear can be guaranteed only by a sealing structure of the steering gear, and particularly the sealing of the input shaft part of the steering gear is particularly important.
Referring to fig. 1, a seal cover 01 of a dash panel of a steering system and a vehicle body is disposed on a steering column intermediate shaft 02, and cannot seal an input shaft portion of a steering gear 03. Therefore, the sealing of the input shaft of the steering gear 03 is mainly ensured by the sealing structure of the steering gear, and particularly under the severe working conditions such as wading and sand, the sealing structure of the input shaft is very important.
Referring to fig. 2, a seal cover 01 'of the rear steering gear may be fixed to an input shaft housing sensor cover of the steering gear 03' instead of the steering column intermediate shaft 02', and may be press-fitted to a dash panel of a vehicle body while ensuring sealing of the input shaft portion of the steering gear 03'.
With reference to fig. 3, for a front steering gear, the existing solution is described as follows: the plastic protecting sleeve 31 'is in interference fit with the steering gear input shaft 32', the plastic protecting sleeve 31 'rotates along with the steering gear input shaft 32' in the automobile steering process, the plastic protecting sleeve 31 'is in clearance fit with the sensor cover 34', the dustproof seal 33 'is in interference fit and pressed in the sensor cover 34', and the steering gear input shaft 32 'and the sensor cover 34' are in interference fit to play a role in sealing, dust prevention and water prevention.
The sealing of the input shaft 32' part of the front steering gear is mainly ensured by a dustproof seal 33' matched with the shell and the input shaft 32', meanwhile, a plastic protective sleeve 31' is added on the input shaft 32', the input shaft 32' part is further sealed by matching with the input shaft 32' and a sensor cover 34', and meanwhile, the input shaft 32' can be protected against collision and corrosion.
Although the existing scheme can also play a role in sealing, the existing scheme completely depends on the interference fit between the dustproof seal and the input shaft, and in the steering process of the vehicle, the dustproof seal and the input shaft can move relatively, and after long-term durability, dust and impurities enter the lip part of the dustproof seal, so that the sealing can be failed, and the steering gear is damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a steering gear and vehicle for avoid the vehicle to turn to sealed inefficacy of in-process.
In order to achieve the above purpose, the utility model provides the following technical scheme:
in a first aspect, there is provided a steering gear comprising: the device comprises an input shaft, a sensor cover, a protective sleeve and a dustproof seal; the input shaft penetrates through the sensor cover, and the protecting sleeve is sleeved on the input shaft; the sensor cover is provided with an annular groove surrounding the input shaft, grease is filled in the annular groove, the protective sleeve is provided with an annular boss, and the annular boss is coaxially matched in the annular groove and immersed in the grease.
In the steering gear, the annular boss of the protective sleeve is matched in the annular groove and immersed in grease in the groove, the grease seals a gap between the annular boss and the annular groove, and external dust and moisture cannot enter the gap between the input shaft and the sensor cover; and because the annular boss is matched with the annular groove, the grease is filled in the annular groove, and the annular boss cannot be blocked relative to the rotation of the annular groove on the premise of keeping sealing.
Optionally, a gap is formed between each inner wall of the annular boss and the annular groove, and the grease is filled in the gap.
Optionally, the sensor cover has an annular outer protrusion and an annular inner protrusion which are coaxial, and the annular outer protrusion and the annular inner protrusion enclose the annular groove.
Optionally, the annular outer protrusion has at least one drainage hole.
Optionally, the annular outer protrusion has two drainage holes, and the two drainage holes are respectively arranged on two sides of the axis of the annular outer protrusion.
Optionally, the protective sleeve further has an annular extension surrounding the outer side of the annular boss, and the annular outer protrusion is located between the annular extension and the annular boss and is in clearance fit with the annular extension.
Optionally, the circumferential edge of the sensor cover is formed with an annular step groove, and the annular extension is located in the annular step groove.
Optionally, the depth of the annular stepped groove is greater than the depth of the annular groove, and along the axial direction of the input shaft, the free end of the annular extension portion is located between the groove bottom of the annular stepped groove and the groove bottom of the annular groove.
Optionally, the boot is an interference fit with the input shaft; the dustproof seal is positioned on the inner side of the annular groove and is in interference fit between the input shaft and the sensor cover.
In a second aspect, a front steering system is provided, which includes the steering gear according to any one of the above technical solutions.
The advantages of the front steering system and the steering gear are the same as those of the prior art, and are not described in detail herein.
In a third aspect, a vehicle is provided, wherein the vehicle comprises the front steering system of any one of the above technical aspects.
The vehicle and the front steering system have the same advantages compared with the prior art, and the detailed description is omitted.
Drawings
FIG. 1 is a schematic structural diagram of a front steering system of the prior art;
FIG. 2 is a schematic diagram of a rear steering system of the prior art;
FIG. 3 is a schematic view of a prior art output shaft mated to a sensor cover;
FIG. 4 is a schematic view of a portion of a diverter according to an embodiment of the present application;
FIG. 5 shows a partial schematic view of the annular groove and annular boss of FIG. 4 engaged;
FIG. 6 shows a top view of the sensor cap of FIG. 4;
figure 7 shows a bottom view of the protective sleeve of figure 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
With reference to fig. 4 to 7, a steering gear provided in an embodiment of the present application includes: an input shaft 1, a sensor cover 4 (which can be made of metal or plastic), a protective sleeve 2 (which can be made of plastic) and a dust seal 3; the sensor cover 4 is provided with a through hole for the input shaft 1 to penetrate through, the input shaft 1 is matched in the through hole, a circle of step recesses are formed in the edge of the through hole of the sensor cover 4, the step recesses are filled with the dust seal 3, the dust seal 3 is in interference fit with the input shaft 1 and the sensor cover 4, primary sealing is achieved, and the dust seal 3 can be fixed in the step recesses of the sensor cover 4 in a press-fitting mode; the protective sleeve 2 is sleeved on the input shaft 1; the sensor cover 4 is provided with a circular annular groove U surrounding the input shaft 1, grease 24 is filled in the annular groove U, the protective sleeve 2 is provided with a circular annular boss 22, and the annular boss 22 is coaxially matched in the annular groove U and is immersed in the grease 24; grease 24 seals the gap between annular boss 22 and the annular groove U, in external dust and moisture can't get into the gap between input shaft 1 and the sensor lid 4, because the matching of annular boss 22 and annular groove U, grease 24 is filled in annular groove U, can not cause the rotation of annular boss 22 for annular groove U under the sealed prerequisite of keeping and block, it is sealed to be equivalent to having realized the activity, even if in long-term use, dust seal 3 is inefficacy, annular boss 22 passes through grease 24 and annular groove U's activity and seals the lip that still can effectively prevent dust and moisture invasion dust seal 3. The double sealing is realized, and the failure of the steering gear caused by the fact that water, dust and other foreign matters enter the interior of the dust seal can be effectively avoided.
Referring to fig. 5, a gap is maintained between each of the inner walls of the annular boss 22 and the annular groove U, so that the problems of direct friction between the annular boss 22 and the annular groove U and poor sealing performance are solved, the gap is further filled with grease 24, and the grease 24 can seal the gap and lubricate the gap between the annular boss 22 and the annular groove U. The distance between the two opposite side walls of the annular groove U in the radial direction of the annular projection 22 may be equal, so as to avoid the grease 24 on one side from overflowing due to the excessive pressing force of the grease 24. Also, the level of the grease 24 may be below the top edge of the annular groove U to avoid spilling the grease 24.
The annular groove U may be formed in various ways, for example, the annular groove U may be directly etched on the mesa of the sensor cover 4, or an annular outer protrusion 41 and an annular inner protrusion 42 which are coaxial may be disposed on the mesa of the sensor cover 4, and the annular outer protrusion 41 and the annular inner protrusion 42 enclose the annular groove U, so as to prevent the etched annular groove U from damaging the structural strength of the sensor cover 4. In order to avoid the water accumulation in the annular groove U and the influence on the sealing effect of the grease 24, a drain hole 411 may be formed in the annular outer protrusion 41, and the accumulated water is accumulated above the grease 24 and can flow out through the drain hole 411. The number of the drain holes 411 is not limited, and at least one may be reserved. However, in order to avoid water accumulation caused by untimely drainage on one side, two sides of the axis of the annular outer protrusion 41 can be respectively provided with one drainage hole 411, the two drainage holes 411 respectively drain water uniformly on two sides, which is beneficial to fully draining water, and simultaneously can prevent the grease 24 from running off, and more than three drainage holes 411 can be arranged at equal intervals, so that the water can be drained more quickly and fully, but the amount is proper, and the grease 24 is prevented from running off.
In addition, the protection sleeve 2 is also provided with an annular extension part 23 surrounding the outer side of the annular boss 22, the annular boss 22 and the annular extension part 23 are connected to the part of the protection sleeve 2 surrounding the input shaft 1 through a transverse connecting part 21, the annular extension part 23 and the annular boss 22 are respectively arranged at two sides of the annular outer protrusion 41, the annular outer protrusion 41 is equivalent to extend between the annular extension part 23 and the annular boss 22 and is in clearance fit with the annular extension part 23 to form a bent flow passage, and dust and moisture are more difficult to enter the lip of the dust seal 3.
The circumferential edge of the sensor cover 4 is formed with an annular stepped groove 43, and the annular extension 23 is located in the annular stepped groove 43; a gap is further formed between the bottom surface of the annular stepped groove 43 and the annular extension part 23, so that a flow passage is prolonged, and the dustproof and waterproof effects are better. The depth of the annular step groove 43 can be greater than that of the annular groove U, the free end of the annular extension portion 23 is located between the groove bottom of the annular step groove 43 and the groove bottom of the annular groove U in the axial direction of the input shaft 1, a certain gap can be kept between the annular extension portion 23 and the groove bottom of the annular step groove 43, meanwhile, the length of the gap between the annular extension portion 23 and the sensor cover 4 can be further increased, and the dustproof and waterproof effects are improved.
Based on the same inventive concept, the embodiment of the application further provides a front steering system, and the front steering system comprises the steering gear provided by the embodiment. The beneficial effects of the front steering system can be analyzed by referring to the effects of the steering gear provided by the foregoing embodiments.
Based on the same inventive concept, the embodiment of the application also provides a vehicle, and the vehicle comprises the front steering system provided by the embodiment. The beneficial effects of the vehicle can be analyzed with reference to the effects of the front steering system provided by the foregoing embodiment.
It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A diverter, comprising: the device comprises an input shaft, a sensor cover, a protective sleeve and a dustproof seal; wherein,
the input shaft penetrates through the sensor cover, and the protective sleeve is sleeved on the input shaft;
the sensor cover is provided with an annular groove surrounding the input shaft, grease is filled in the annular groove, the protective sleeve is provided with an annular boss, and the annular boss is coaxially matched in the annular groove and immersed in the grease.
2. The diverter according to claim 1 wherein there is a gap between the annular boss and each inner wall of the annular groove, the grease filling the gap.
3. The diverter according to claim 1, wherein the sensor cover has an outer annular projection and an inner annular projection that are coaxial, the outer annular projection and the inner annular projection enclosing the annular recess.
4. The diverter according to claim 3, wherein the annular outer protrusion has at least one drainage hole.
5. The diverter according to claim 4 wherein said annular outer protrusion has two drainage holes, two of said drainage holes being disposed on opposite sides of an axis of said annular outer protrusion.
6. The diverter according to claim 3, wherein the shield further has an annular extension surrounding the outer side of the annular boss, the annular outer projection being located between the annular extension and the annular boss and being in clearance fit with the annular extension.
7. The diverter according to claim 6, wherein a circumferential edge of the sensor cover is formed with an annular step groove, the annular extension being located within the annular step groove.
8. The steering gear according to claim 7, wherein the depth of the annular step groove is greater than the depth of the annular groove, and the free end of the annular extension is located between the groove bottom of the annular step groove and the groove bottom of the annular groove in the axial direction of the input shaft.
9. The steering gear of claim 1, wherein the boot has an interference fit with the input shaft;
the dustproof seal is positioned on the inner side of the annular groove and is in interference fit between the input shaft and the sensor cover.
10. A front steering system, characterized by comprising a steering gear according to any one of claims 1 to 9.
11. A vehicle characterized by comprising the front steering system of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222184135.0U CN217874177U (en) | 2022-08-18 | 2022-08-18 | Steering gear, front steering system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222184135.0U CN217874177U (en) | 2022-08-18 | 2022-08-18 | Steering gear, front steering system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217874177U true CN217874177U (en) | 2022-11-22 |
Family
ID=84078345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222184135.0U Active CN217874177U (en) | 2022-08-18 | 2022-08-18 | Steering gear, front steering system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217874177U (en) |
-
2022
- 2022-08-18 CN CN202222184135.0U patent/CN217874177U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |