CN209888551U - Structure for accommodating wheel speed sensor and driving shaft for vehicle - Google Patents
Structure for accommodating wheel speed sensor and driving shaft for vehicle Download PDFInfo
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- CN209888551U CN209888551U CN201920235756.2U CN201920235756U CN209888551U CN 209888551 U CN209888551 U CN 209888551U CN 201920235756 U CN201920235756 U CN 201920235756U CN 209888551 U CN209888551 U CN 209888551U
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- protective cover
- wheel speed
- speed sensor
- hub bearing
- drive shaft
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Abstract
A structure for accommodating a wheel speed sensor and a drive shaft for a vehicle, wherein the structure for accommodating a wheel speed sensor comprises: a drive shaft, a hub bearing, a knuckle and a protective cover; the driving shaft is connected with the inner ring of the hub bearing; the steering knuckle is connected with the outer ring of the hub bearing; the protective cover is annular and is sleeved outside the driving shaft, and the distance between the protective cover and the steering knuckle is smaller than a first preset distance; the drive shaft, the hub bearing, the knuckle, and the protective cover collectively form a space that accommodates the wheel speed sensor. Through being provided with the visor between drive shaft and knuckle to prevent magnetic substance such as iron fillings from getting into the fast sensor sensing range of wheel, influence the electromotive force of the fast sensor sensing of wheel, guarantee the accuracy of the speed of a motor vehicle of test. Meanwhile, the arrangement also prevents foreign matters from entering the common space of the driving shaft, the hub bearing, the steering knuckle and the protective cover 4 to influence the mutual movement between the driving shaft and the inner ring of the hub bearing and between the inner ring and the outer ring of the hub bearing, thereby prolonging the service life of the components.
Description
Technical Field
The utility model relates to an automobile parts field, a drive shaft for holding structure of fast sensor of wheel and being used for vehicle of special design.
Background
The hub bearing is one of the key parts of the automobile, and the main functions of the hub bearing are to bear the weight and provide accurate guidance for the rotation of the hub. With the development of technology, the hub unit of the car is widely used by the car, the range of use and the amount of use of the hub unit are increasing, and the third generation is developed at present. The first generation is composed of double-row angular contact bearings, the second generation is provided with a flange for fixing the bearing on an outer raceway, the bearing can be simply sleeved on a wheel shaft and fixed by a nut; the third generation wheel hub bearing adopts the bearing unit and prevents that the locking system of stopping (ABS) cooperatees, and wherein the fast information of wheel is indispensable, and the fast information of wheel is all required to car dynamic control system (VDC), car Electronic Stability Program (ESP), anti-lock brake system (ABS), automatic gearbox's control system etc..
In the prior art, wheel speed information is detected through a wheel speed sensor, the principle is that the wheel speed information is detected through electromagnetic induction, but magnetic substances such as iron scraps and the like can enter a sensor sensing range in the running process of a vehicle, and the accuracy of wheel speed information detection is influenced.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
The utility model aims at providing a can be used to hold the structure of fast sensor of wheel and be used for the drive shaft of vehicle.
(II) technical scheme
To achieve the above object, an aspect of the present invention provides a structure for accommodating a wheel speed sensor, including: a drive shaft, a hub bearing, a knuckle and a protective cover; the driving shaft is connected with the inner ring of the hub bearing; the steering knuckle is connected with the outer ring of the hub bearing; the protective cover is annular and is sleeved outside the driving shaft, and the distance between the protective cover and the steering knuckle is smaller than a first preset distance; the drive shaft, the hub bearing, the knuckle, and the protective cover collectively form a space that accommodates the wheel speed sensor.
Further, the protective cover is connected with the drive shaft by interference fit.
Further, the protective cover is a flange, and the flange surface of the flange faces to the side opposite to the wheel speed sensor.
Further, the protective cover is made of a sheet metal.
Further, the thickness of the protective cover ranges from 1 mm to 2 mm.
Further, the protective cover is made of rubber.
Further, a boss is arranged at the position, close to the protective cover, of the steering knuckle.
Further, the first preset distance is 0.5 mm to 1.5 mm.
Furthermore, external teeth are arranged at the joint of the driving shaft and the inner ring; the joint of the inner ring and the driving shaft is provided with inner teeth matched with the outer teeth.
Further, the magnetic ring is also included; the magnetic ring is arranged on one side of the hub bearing close to the wheel speed sensor.
Another aspect of the present invention provides a driving shaft for a vehicle, wherein a protective cover is sleeved outside the driving shaft; the protective cover is annular and is sleeved at a position corresponding to the steering knuckle when the driving shaft is assembled on the vehicle chassis.
Further, the protective cover is arranged to be at a distance from the steering knuckle that is less than a first preset distance when mounted to the vehicle.
(III) advantageous effects
The above technical scheme of the utility model has following profitable technological effect:
(1) the protective cover is arranged between the driving shaft and the steering knuckle, so that magnetic substances such as scrap iron and the like are prevented from entering a sensing range of the wheel speed sensor, and the accuracy of the tested vehicle speed is ensured;
(2) the protective cover is connected with the driving shaft in an interference fit manner, is tightly connected and is not easy to fall off or move due to shaking of the vehicle, so that external substances are prevented from entering a sensing range of the sensor, and the protective cover is ensured to work stably;
(3) through being provided with the boss on the knuckle, the clearance is less than 0.5 millimeter between boss and the visor to prevent magnetic material such as iron fillings from getting into sensor sensing range, guarantee the accuracy of the speed of a motor vehicle of test.
Drawings
FIG. 1 is a schematic cross-sectional view of a structure for housing a wheel speed sensor of the present invention;
FIG. 2 is a schematic view of a protective cover of the present invention for accommodating a wheel speed sensor;
fig. 3 is a schematic diagram of the magnetic ring for accommodating the structure of the wheel speed sensor according to the present invention, which is disposed on the outer ring.
Reference numerals:
1: a drive shaft; 2: a hub bearing; 21: an inner ring; 211: internal teeth; 22: an outer ring; 3: a knuckle; 31: a boss; 4: a protective cover; 5: a wheel speed sensor; 6: a magnetic coil; 7: a dust cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
FIG. 1 is a schematic cross-sectional view of a structure for housing a wheel speed sensor of the present invention; fig. 2 is a schematic diagram of a protective cover of the structure for accommodating a wheel speed sensor according to the present invention.
As shown in fig. 1, the structure for accommodating wheel speed sensor of the present invention includes: a drive shaft 1, a hub bearing 2, a knuckle 3 and a protective cover 4; the driving shaft 1 is connected with an inner ring 21 of the hub bearing 2; the knuckle 3 is connected with the outer ring 22 of the hub bearing 2; the protective cover 4 is annular and is sleeved outside the driving shaft 1, and the distance between the protective cover and the steering knuckle 3 is smaller than a first preset distance; the drive shaft 1, the hub bearing 2, the knuckle 3, and the protective cover 4 together form a space that accommodates the wheel speed sensor 5. The drive shaft 1 is provided with a dust cover 7. External teeth are arranged at the joint of the driving shaft 1 and the inner ring 21; the joint of the inner ring 21 and the drive shaft 1 is provided with internal teeth 211 matched with the external teeth. When the automobile runs, the driving shaft 1 rotates to drive the inner ring 21 of the hub bearing 2 to rotate, the inner ring 21 of the hub bearing 2 drives the wheel to rotate, the protective cover 4 rotates along with the driving shaft 1, and the steering knuckle 3, the outer ring 22 of the hub bearing 2 and the sensor 5 do not rotate. When the car moves, because the external tooth of drive shaft 1 and the internal tooth 211 rotation of inner circle 21, the tooth root of external tooth and internal tooth 211 and the tooth top can constantly change with the distance of fast sensor 5 of wheel, so the electromotive force in the fast space of fast sensor 5 of wheel can constantly change, and fast sensor 5 sensing of wheel is this changes to send to the treater, the treater receives fast sensor 5 of wheel and reachs fast information of wheel through calculating, thereby the realization is to the detection and the analysis of wheel motion state. Through being provided with visor 4 between drive shaft 1 and knuckle 3 to prevent magnetic substance such as iron fillings from getting into the fast sensor 5 sensing range of wheel, influencing the electromotive force of the fast sensor 5 sensing of wheel, guarantee the accuracy of the speed of a motor vehicle of test. Meanwhile, the arrangement also prevents foreign matters from entering a common space of the driving shaft 1, the hub bearing 2, the steering knuckle 3 and the protective cover 4, and influences the mutual movement between the driving shaft 1 and the inner ring 21 of the hub bearing 2 and between the inner ring 21 and the outer ring 22 of the hub bearing 2, so that the service life of the components is prolonged. Wherein the foreign matter includes, but is not limited to, sand, dust, iron filings.
Preferably, the protective cover 4 is connected with the drive shaft 1 by interference fit. The protective cover 4 is tightly connected with the driving shaft 1, and is not easy to fall off or move due to vehicle shaking, so that external substances are prevented from entering a sensing range of the sensor, and the protective cover 4 is ensured to work stably.
Preferably, the protective cover 4 is a flange, and a flange surface of the flange faces a side opposite to the wheel speed sensor 5. Can block foreign matters to the maximum extent.
Further preferably, the protective cover 4 is made of sheet metal. The sheet metal has the characteristics of light weight, high strength, low cost, good large-scale mass production performance and the like, the sheet metal is used for manufacturing the protective cover 4, the influence of the weight of the protective cover 4 on the driving shaft 1 can be reduced, and the service life is long.
Specifically, the thickness of the protective cover 4 ranges from 1 mm to 2 mm, preferably 1 mm.
Optionally, the protective cover 4 is made of rubber.
Alternatively, the wheel speed sensor 5 is a magneto-electric wheel speed sensor or a hall wheel speed sensor.
Preferably, the steering knuckle 3 is provided with a boss 31 near the protective cover 4. The gap between the boss 31 and the protective cover 4 is smaller than a first preset distance, so that magnetic substances such as scrap iron and the like are prevented from entering a sensing range of the sensor, and the accuracy of the tested vehicle speed is ensured.
Alternatively, the inner diameter of the inner ring 21 of the hub bearing 2 is 104.25 mm, while the inner diameter of the boss 31 is 85mm, since the knuckle 3 is machined on a casting, the material of the cast blank can be utilized to the maximum extent, the boss 31 is located immediately above the hole of the wheel speed sensor 5, is 29.5mm away from the mounting surface of the hub bearing 2, and has a wall thickness of 2.38mm, and the whole considers the effectiveness of the mounting process of the drive shaft 1 and the matching of the protective cover.
Alternatively, the first predetermined distance is such that there is a gap between the protective cover 4 and the boss 31 so that the protective cover 4 and the boss 31 do not rub against each other and the gap is ensured to be small enough so that foreign substances do not affect the operation of the wheel speed sensor 5 and other components, and is 0.5 mm to 1.5 mm, preferably 0.5 mm, and the smaller the gap, the less likely the foreign substances affect the operation of the wheel speed sensor 5 and other components.
Fig. 3 is a schematic diagram of the magnetic ring for accommodating the structure of the wheel speed sensor according to the present invention, which is disposed on the outer ring.
As shown in fig. 3, the structure for housing the wheel speed sensor further includes a magnetic coil 6; the magnetic ring 6 is disposed on a side of the hub bearing 2 close to the wheel speed sensor 5.
The utility model also provides a driving shaft for the vehicle, wherein the outer side of the driving shaft 1 is sleeved with a protective cover 4; the protective cover 4 is annular and is fitted in a position corresponding to the knuckle 3 when the drive shaft 1 is fitted to the vehicle chassis. The protective cover 4 is arranged to be at a distance from the knuckle 3 that is less than a first preset distance when mounted to the vehicle. When the driving shaft 1 and the components connected with the driving shaft do relative movement, the protective cover 4 can prevent foreign matters such as sand, dust, scrap iron and the like from entering the protective cover to influence the relative movement, and the service life of the components is prolonged. The first predetermined distance is 0.5 mm to 1.5 mm, preferably 0.5 mm, and the smaller the gap, the less likely the foreign matter will affect the operation of the component.
The utility model discloses aim at protecting a drive shaft for holding the structure of fast sensor of wheel and being used for the vehicle for the structure that holds fast sensor of wheel includes drive shaft 1, wheel hub bearing 2, knuckle 3 and visor 4, and drive shaft 1, wheel hub bearing 2, knuckle 3 and visor 4 form the space that holds fast sensor of wheel 5 jointly. Through being provided with visor 4 between drive shaft 1 and knuckle 3 to prevent magnetic substance such as iron fillings from getting into the fast sensor 5 sensing range of wheel, guarantee the accuracy of the speed of a motor vehicle of test. The protective cover 4 is connected with the driving shaft 1 in an interference fit manner, is tightly connected and is not easy to fall off or move due to vehicle shaking, so that external substances are prevented from entering a sensing range of the sensor, and the protective cover 4 is ensured to work stably. Through being provided with boss 31 on knuckle 3, the clearance is less than 0.5 millimeter between boss 31 and the visor 4 to prevent magnetic substance such as iron fillings from getting into sensor sensing range, guarantee the accuracy of the speed of a motor vehicle of test.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (12)
1. A structure for housing a wheel speed sensor, comprising: the device comprises a driving shaft (1), a hub bearing (2), a steering knuckle (3) and a protective cover (4);
the drive shaft (1) is connected with an inner ring (21) of the hub bearing (2);
the steering knuckle (3) is connected with an outer ring (22) of the hub bearing (2);
the protective cover (4) is annular and is sleeved outside the driving shaft (1), and the distance between the protective cover and the steering knuckle (3) is smaller than a first preset distance;
the drive shaft (1), the hub bearing (2), the knuckle (3) and the protective cover (4) together form a space for accommodating a wheel speed sensor (5).
2. The structure for housing a wheel speed sensor according to claim 1, characterized in that the protective cover (4) is connected with the drive shaft (1) by interference fit.
3. The structure for housing a wheel speed sensor as claimed in claim 1, wherein the protective cover (4) is a flange plate, a flange face of which faces a side opposite to the wheel speed sensor (5).
4. The structure for housing a wheel speed sensor according to claim 1, characterized in that the protective cover (4) is made of sheet metal.
5. The structure for housing a wheel speed sensor according to any one of claims 1 to 4, wherein the thickness of the protective cover (4) is in a range of 1 mm to 2 mm.
6. The structure for housing a wheel speed sensor according to claim 1, wherein the protective cover (4) is made of rubber.
7. The structure for housing a wheel speed sensor according to any one of claims 1 to 4, wherein the knuckle (3) is provided with a boss (31) near the protective cover (4).
8. The structure for housing a wheel speed sensor of any of claims 1-4, wherein the first predetermined distance is 0.5 mm to 1.5 mm.
9. The structure for housing a wheel speed sensor according to claim 1, wherein external teeth are provided at the junction of the drive shaft (1) and the inner race (21);
and an inner tooth (211) matched with the outer tooth is arranged at the joint of the inner ring (21) and the driving shaft (1).
10. The structure for housing a wheel speed sensor according to claim 1, further comprising a magnetic coil (6);
the magnetic ring (6) is arranged on one side, close to the wheel speed sensor (5), of the hub bearing (2).
11. A drive shaft for a vehicle is characterized in that a protective cover (4) is sleeved on the outer side of the drive shaft (1);
the protective cover (4) is annular and is sleeved at a position corresponding to the steering knuckle (3) when the driving shaft (1) is assembled on the chassis of the vehicle.
12. The drive shaft for a vehicle according to claim 11, characterized in that the protective cover (4) is arranged to be at a distance from the steering knuckle (3) that is smaller than a first preset distance when fitted to a vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920235756.2U CN209888551U (en) | 2019-02-25 | 2019-02-25 | Structure for accommodating wheel speed sensor and driving shaft for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920235756.2U CN209888551U (en) | 2019-02-25 | 2019-02-25 | Structure for accommodating wheel speed sensor and driving shaft for vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN209888551U true CN209888551U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920235756.2U Active CN209888551U (en) | 2019-02-25 | 2019-02-25 | Structure for accommodating wheel speed sensor and driving shaft for vehicle |
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| CN (1) | CN209888551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774377A (en) * | 2019-02-25 | 2019-05-21 | 上海蔚来汽车有限公司 | A kind of structure for accommodating wheel speed sensors and the drive shaft for vehicle |
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2019
- 2019-02-25 CN CN201920235756.2U patent/CN209888551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774377A (en) * | 2019-02-25 | 2019-05-21 | 上海蔚来汽车有限公司 | A kind of structure for accommodating wheel speed sensors and the drive shaft for vehicle |
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