CN220816318U - Cross joint assembly - Google Patents
Cross joint assembly Download PDFInfo
- Publication number
- CN220816318U CN220816318U CN202322513933.8U CN202322513933U CN220816318U CN 220816318 U CN220816318 U CN 220816318U CN 202322513933 U CN202322513933 U CN 202322513933U CN 220816318 U CN220816318 U CN 220816318U
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- China
- Prior art keywords
- cross
- sealing ring
- seal ring
- ring
- abutting
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- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 24
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model provides a cross joint assembly, which comprises a cross shaft, a sealing ring and a needle roller bearing, wherein the cross shaft is provided with 4 connecting shafts, and an abutting part is formed on each connecting shaft; the sealing ring is sleeved on the connecting shaft and is in abutting connection with the abutting part, and a sheet-shaped reinforcing bracket is arranged inside the sealing ring along the abutting surface of the sealing ring and the abutting part; the needle roller bearing is sleeved on the connecting shaft and is abutted with the sealing ring, and the needle roller bearing is sealed by the sealing ring.
Description
Technical Field
The utility model relates to a cross joint assembly.
Background
With the continuous development of the automobile industry and the continuous improvement of the automobile quality in China, the requirements of people on the performance and the cost of automobile parts are also higher and higher. Among them, the steering column assembly of the automobile is an important component for transmitting torque as a component connecting a steering wheel and a steering mechanism.
Conventionally, a vehicle steering device includes a steering column, a universal joint, an intermediate shaft, an output shaft, a steering mechanism on a vehicle side, and the like. The steering wheel connected to the steering column is connected with the steering mechanism on the vehicle side through the steering column, the universal joint, the intermediate shaft and the output shaft, and the steering mechanism is driven by operating the steering wheel, so that the wheels connected with the steering mechanism swing left and right to realize the steering of the automobile.
The two ends of the intermediate shaft are respectively connected with the lower shaft of the steering column and the output shaft through universal joints. Typically, the universal joint is formed from a cross assembly that includes a cross and needle bearings mounted on the cross. For example, a yoke connected to a lower shaft of the steering column is connected to a yoke of an intermediate shaft via a needle bearing on a cross and the cross.
In the cross joint assembly, a plurality of needle bearings are sleeved on each shaft of the cross shaft, and sealing rings are needed to be used for sealing between the needle bearings and the cross shaft so as to prevent dust from entering the needle bearings.
In order to strengthen the rigidity of the seal ring, it is generally necessary to provide a rigidity reinforcing member in the seal ring. In the prior art, as shown in fig. 7, a metal ring having an L-shaped metal skeleton S, i.e., a metal ring having an L-shaped cross section along the axial direction of the seal ring is incorporated in the seal ring 1, and such a seal ring can satisfy the seal requirement, but it is detected that the torque requirement cannot be satisfied when an idling torque experiment is performed on such a mechanism. Namely, when the cross joint assembly is stressed, the L-shaped metal framework in the sealing ring can deform, so that the sealing ring can deform, the friction force among the sealing ring, the cross shaft and the needle roller bearing is increased, the torque during rotation is increased, the design standard is not met, and the steering wheel is hard to rotate.
Disclosure of utility model
The present utility model has been made in view of the above-mentioned problems, and an object of the present utility model is to provide a joint cross assembly that ensures smooth steering without increasing friction.
In order to achieve the above-mentioned purpose, the utility model provides a cross joint assembly, including the cross, seal ring and needle bearing, the cross has 4 connecting shafts, there are abutting parts in the connecting shaft; the sealing ring is sleeved on the connecting shaft and is in abutting connection with the abutting part, and a sheet-shaped reinforcing bracket along the abutting surface of the sealing ring and the abutting part is arranged inside the sealing ring; the needle roller bearing is sleeved on the connecting shaft and is abutted with the sealing ring, and the needle roller bearing is sealed by the sealing ring.
The cross joint assembly comprises a cross shaft, a sealing ring and a needle bearing, wherein the cross shaft is provided with 4 connecting shafts, and an abutting part is formed on each connecting shaft; the sealing ring is sleeved on the connecting shaft and is in abutting connection with the abutting part, and a sheet-shaped reinforcing bracket along the abutting surface of the sealing ring and the abutting part is arranged inside the sealing ring; the needle roller bearing is sleeved on the connecting shaft and is abutted with the sealing ring, and the needle roller bearing is sealed by the sealing ring. In this way, in the utility model, the I-shaped framework which is the sheet-shaped reinforcing bracket along the abutting surface of the sealing ring and the abutting part is arranged in the sealing ring, so that when the cross joint assembly is stressed and the needle bearing rotates, the sheet-shaped reinforcing bracket in the sealing ring cannot deform, the friction force among the sealing ring, the cross shaft and the needle bearing cannot be increased, the torque during the rotation of the steering wheel is kept within the standard torque, and the steering smoothness is ensured.
In the joint assembly described above, the needle bearing includes an outer race and a plurality of rollers mounted on an inner surface of the outer race.
In the joint cross assembly described above, the seal ring includes the fitting portion, the outer seal ring portion formed on the outer peripheral side of the fitting portion, and the inner seal ring portion formed on the inner peripheral side of the fitting portion, and the fitting portion is in contact with the contact portion.
In addition, in the joint cross assembly described above, the sheet-like reinforcing bracket is formed in the fitting portion.
In the cross joint assembly described above, the outer seal ring portion is in contact with the outer peripheral surface of the outer ring of the needle bearing, and the inner seal ring portion is in contact with the end surface of the outer ring of the needle bearing, with the needle bearing sealed by the seal ring.
In addition, in the cross joint assembly, the sheet-shaped reinforcing support is a steel ring sheet.
In the cross joint assembly, the sheet-like reinforcing bracket is formed of a plurality of steel sheets which are arranged in a ring shape at intervals and are provided inside the seal ring.
In summary, in the utility model, the I-shaped skeleton is built in the seal ring, which is a sheet-shaped reinforcing bracket along the contact surface between the seal ring and the contact portion, so that when the joint cross assembly is stressed and the needle bearing rotates, the sheet-shaped reinforcing bracket in the seal ring is not deformed, and the friction force among the seal ring, the cross shaft and the needle bearing is not increased, thereby keeping the torque during the rotation of the steering wheel within the standard torque and ensuring the steering smoothness.
Drawings
Fig. 1 is a schematic diagram showing the overall structure of a vehicle steering device of the present embodiment.
Fig. 2 is a perspective view showing a structure to which the joint cross assembly of the present utility model is attached.
Fig. 3 is a perspective view showing the structure of the joint cross assembly of the present utility model.
Fig. 4 is a perspective view showing a state in which a cross and a seal ring of the present utility model are mounted.
Fig. 5 is a schematic perspective view showing the needle bearing of the present utility model.
FIG. 6 is a partial cross-sectional view showing the construction of the cross-joint assembly of the present utility model.
Fig. 7 is a schematic view showing the structure of a conventional joint cross assembly.
Detailed Description
Hereinafter, embodiments of the present utility model will be described with reference to the drawings. However, the joint assemblies disclosed in the following embodiments are merely examples, and the present utility model is not limited to the following embodiments as long as the effects of the present utility model can be achieved.
Fig. 1 is a schematic diagram showing the overall structure of a vehicle steering device of the present embodiment. Fig. 2 is a perspective view showing a structure to which the joint cross assembly of the present utility model is attached. Fig. 3 is a perspective view showing the structure of the joint cross assembly of the present utility model. Fig. 4 is a perspective view showing a state in which a cross and a seal ring of the present utility model are mounted. Fig. 5 is a schematic perspective view showing the needle bearing of the present utility model. FIG. 6 is a partial cross-sectional view showing the construction of the cross-joint assembly of the present utility model.
As shown in fig. 1, the vehicle steering device includes a steering column 1, a knuckle assembly 2, an intermediate shaft 3, an output shaft 4, and a vehicle-side steering mechanism 5, and the steering column 1 is connected to the steering mechanism 5 via the knuckle assembly 2, the intermediate shaft 3, and the output shaft 4 in this order. The intermediate shaft 3 and the output shaft 4 may be connected by the joint assembly 2. In fig. 2, the knuckle assembly 2 connects a yoke at one end of the intermediate shaft 3 with a yoke of a lower shaft of the steering column 1.
As shown in fig. 3 to 6, the joint cross assembly 2 includes a cross 210, a seal ring 220, and a needle bearing 230. As shown in fig. 4, the cross 210 has 4 connecting shafts 211, and the connecting shafts 211 are formed with abutting portions 212. The seal ring 220 is sleeved on the connecting shaft 211 and abuts against the abutting portion 212. As shown in fig. 6, a sheet-like reinforcing bracket 240 is provided inside the seal ring 220 along the contact surface between the seal ring 220 and the contact portion 212. As shown in fig. 3, the needle bearing 230 is sleeved on the connecting shaft 211 and abuts against the seal ring 220, and the needle bearing 230 is sealed by the seal ring 220.
Specifically, as shown in fig. 4, the cross 210 is formed in a cross shape, and has 4 connecting shafts 211, and an abutting portion 212 is formed on each connecting shaft 211. The abutting portion 212 is a flange having an outer diameter larger than that of the connection shaft 211, and is configured to abut against the seal ring 220 to fix the seal ring 220. Of course, the abutting portion 211 is not limited to this, and may be constituted by a plurality of abutting projections formed on the outer peripheral surface of the connecting shaft 211 as long as it can abut against the seal ring.
As shown in fig. 6, the seal ring 220 includes a fitting portion 221, an outer seal ring portion 222 formed on the outer peripheral side of the fitting portion 221, and an inner seal ring portion 223 formed on the inner peripheral side of the fitting portion 221, and the fitting portion 221 is in contact with the contact portion 212. The sheet-like reinforcing bracket 240 is formed in the fitting portion 221.
In the present utility model, the sheet-shaped reinforcing bracket 240 is a steel ring sheet, but is not limited thereto, and may be a ring sheet of other materials, such as a copper sheet, an iron sheet, or other metal alloy sheet. The sheet-like reinforcing bracket 240 is formed in a ring shape, but the sheet-like reinforcing bracket 240 is not limited thereto, and may be formed of a plurality of steel sheets arranged in a ring shape at intervals and provided inside the seal ring, and may be provided in the fitting portion 221 so as to extend along the contact surface. In the present utility model, the sheet-like reinforcing brace 240 extends along the abutment surface including extending parallel to the abutment surface and extending slightly obliquely to the abutment surface.
In addition, the needle bearing 230 has an outer race 231 and a plurality of rollers 232 mounted on the inner surface of the outer race 231. Needle bearing 230 is a commercially available component and is not described in detail herein.
In a state where the needle bearing 230 is mounted on the connecting shaft 211 and sealed by the seal ring 220, the outer seal ring portion 222 abuts against the outer peripheral surface of the outer ring 231 of the needle bearing 230, and the inner seal ring portion 223 abuts against the end surface of the outer ring 231 of the needle bearing 230. In this way, the needle bearing 230 can be double-sealed by the outer seal ring portion 222 and the inner seal ring portion 223, and the sealing performance of the seal ring 220 can be ensured.
Next, the assembly of the joint cross assembly 2 will be briefly described. First, the seal ring 220 is fitted over the connecting shaft 211 of the manufactured cross 210, then the needle bearing 230 is fitted over the end portion of the connecting shaft 211, the needle bearing 230 is pressed to bring the end portion of the needle bearing 230 into contact with the seal ring 220 until the fitting portion 221 of the seal ring 220 abuts against the abutting portion 212, and the needle bearing 230 is pressed to press the seal ring 220, whereby the cross joint assembly 2 is assembled.
In such a joint assembly 2, the steering column 1 and the intermediate shaft are connected by connecting the opposite two push needle bearings 230 to the fork of the steering column 1 and connecting the other two push needle bearings 230 to the fork of the intermediate shaft.
The cross joint assembly comprises a cross shaft, a sealing ring and a needle bearing, wherein the cross shaft is provided with 4 connecting shafts, and an abutting part is formed on each connecting shaft; the sealing ring is sleeved on the connecting shaft and is in abutting connection with the abutting part, and a sheet-shaped reinforcing bracket along the abutting surface of the sealing ring and the abutting part is arranged inside the sealing ring; the needle roller bearing is sleeved on the connecting shaft and is abutted with the sealing ring, and the needle roller bearing is sealed by the sealing ring. In this way, in the utility model, the I-shaped framework which is the sheet-shaped reinforcing bracket along the abutting surface of the sealing ring and the abutting part is arranged in the sealing ring, so that when the cross joint assembly is stressed and the needle bearing rotates, the sheet-shaped reinforcing bracket in the sealing ring cannot deform, the friction force among the sealing ring, the cross shaft and the needle bearing cannot be increased, the torque during the rotation of the steering wheel is kept within the standard torque, and the steering smoothness is ensured.
Finally, it should be noted that: the above embodiments are merely specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications and variations of the embodiments described herein will be apparent to those skilled in the art, and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (7)
1. A cross joint assembly is characterized in that,
Comprises a cross shaft, a sealing ring and a needle roller bearing,
The cross shaft is provided with 4 connecting shafts, and an abutting part is formed on the connecting shafts;
The sealing ring is sleeved on the connecting shaft and is in abutting connection with the abutting part, and a sheet-shaped reinforcing bracket is arranged inside the sealing ring along the abutting surface of the sealing ring and the abutting part;
The needle roller bearing is sleeved on the connecting shaft and is abutted with the sealing ring, and the needle roller bearing is sealed by the sealing ring.
2. The joint assembly of claim 1, wherein the needle bearing has an outer race and a plurality of rollers mounted on an inner surface of the outer race.
3. The joint cross assembly according to claim 2, wherein the seal ring has a fitting portion, an outer seal ring portion formed on an outer peripheral side of the fitting portion, and an inner seal ring portion formed on an inner peripheral side of the fitting portion, the fitting portion abutting the abutting portion.
4. A joint assembly according to claim 3, wherein the sheet-like reinforcing bracket is formed within the mounting portion.
5. The joint cross assembly according to claim 3, wherein the outer seal ring portion abuts against an outer peripheral surface of the outer ring of the needle bearing, and the inner seal ring portion abuts against an end surface of the outer ring of the needle bearing in a state where the needle bearing is sealed by the seal ring.
6. The joint cross assembly of any one of claims 1 to 5 wherein the sheet-like reinforcing brackets are steel ring sheets.
7. The joint cross assembly according to any one of claims 1 to 5, wherein the sheet-like reinforcing bracket is constituted by a plurality of steel sheets which are arranged in a ring shape at intervals and are provided inside the seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322513933.8U CN220816318U (en) | 2023-09-14 | 2023-09-14 | Cross joint assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322513933.8U CN220816318U (en) | 2023-09-14 | 2023-09-14 | Cross joint assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220816318U true CN220816318U (en) | 2024-04-19 |
Family
ID=90701733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322513933.8U Active CN220816318U (en) | 2023-09-14 | 2023-09-14 | Cross joint assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220816318U (en) |
-
2023
- 2023-09-14 CN CN202322513933.8U patent/CN220816318U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |