A low noise corner turner assembly

Abstract

The utility model discloses a low noise angle steering gear assembly relates to angle steering gear technical field, including box, be provided with two mutually perpendicular engagement nylon gear shaft in the box, the box adopts plastic material, the tooth part surface of nylon gear shaft is covered respectively with nylon layer, reduces the noise of angle steering gear assembly through the engagement transmission of gear nylon layer, one side of nylon gear shaft is fixed through the needle bearing, and the other side is fixed in the box through the deep -groove ball bearing, the one side of deep -groove ball bearing is provided with the washer, and after the press -fitting of deep -groove ball bearing, through the washer rivet fixing, to eliminate the axial clearance of gear shaft. The utility model discloses compact structure, reasonable in design, adopts the plastic box to replace the aluminum alloy box of traditional structure, can realize light weight, adopts washer rivet process fixed, eliminates the axial clearance of gear shaft, adopts the engagement transmission of nylon gear shaft, further reduces the running noise of assembly.

Description

Technical Field

[0001] This utility model relates to the field of angle steering technology, and in particular to a low-noise angle steering assembly. Background Technology

[0002] While existing angle steering systems (such as the Chinese patent with publication number CN204323467U) have advantages such as long service life and strong stability, they still have the following shortcomings: the use of aluminum alloy housing and all-steel gear shaft results in a large overall weight; abnormal noise occurs during the meshing of metal gears and the torsion of components, resulting in high noise levels; the assembly clearance between the bearing and the gear shaft can easily lead to vibration and wear; and the snap ring fixing method may loosen due to long-term use, affecting stability.

[0003] To address the aforementioned issues, those skilled in the art have achieved noise reduction, weight reduction, and gap elimination in steering gears through structural optimization and process improvements, thereby enhancing overall performance. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned technical problems and provide a low-noise angle steering assembly that reduces the operating noise of the angle steering, achieves lightweighting, enhances the shock absorption capacity, eliminates radial and axial clearances, and improves structural stability.

[0005] To achieve the above technical objectives and requirements, the technical solution adopted by this utility model is as follows: a low-noise angle steering assembly, including a housing, in which two mutually perpendicular meshing nylon gear shafts A and B are arranged. The housing is made of plastic, and the tooth surfaces of nylon gear shafts A and B are respectively covered with nylon layers. Through the meshing transmission of the gear nylon layers, the noise of the angle steering assembly is reduced. One side of the gear of nylon gear shaft A is fixed by a needle roller bearing A, and the other side is fixed in the housing by a deep groove ball bearing A. A washer A is provided on one side of the deep groove ball bearing A. One side of the gear of nylon gear shaft B is fixed by a needle roller bearing B, and the other side is fixed in the housing by a deep groove ball bearing B. A washer B is provided on one side of the deep groove ball bearing B. After the deep groove ball bearings are press-fitted, nylon gear shafts A and B are respectively riveted and fixed by washers A and B to eliminate the axial clearance of the gear shafts.

[0006] Preferably, the deep groove ball bearings A and B are thickened deep groove ball bearings, and the outer diameter of the deep groove ball bearings A and B is larger than the inner diameter of the housing at the corresponding position of the gear, so as to eliminate the radial clearance of the assembly.

[0007] Preferably, positioning steps are provided at the corresponding positions of the inner ring of the housing and the deep groove ball bearings A and B.

[0008] Preferably, both the nylon gear shaft A and the nylon gear shaft B are configured as an integrated structure of gear and shaft.

[0009] Preferably, a sealing component A is provided in the housing on one side of the gasket A. The sealing component A includes an oil seal A disposed at the end of the housing and a spacer A disposed between the oil seal A and the deep groove ball bearing A. A sealing component B is provided in the housing on one side of the gasket B. The sealing component B includes an oil seal B disposed at the end of the housing and a spacer B disposed between the oil seal B and the deep groove ball bearing B.

[0010] Preferably, dust covers are provided at both ends of the housing, and the dust covers are respectively fitted onto nylon gear shaft A and nylon gear shaft B. A cover is provided on the outside of the dust cover, and the cover is respectively fitted onto the top of nylon gear shaft A and nylon gear shaft B.

[0011] Compared with the traditional structure, the beneficial effects of this utility model are: 1. This utility model has a compact structure and reasonable design. It uses a plastic box to replace the traditional aluminum alloy box, which significantly reduces the overall weight and achieves lightweighting. The shock absorption characteristics of the material itself can reduce the operating vibration and noise of the steering gear assembly. 2. This utility model has good stability. It uses enlarged and thickened deep groove ball bearings and positions them through the positioning steps in the housing, eliminating the radial clearance of the assembly and improving the structural stability. 3. The traditional snap ring fixing method is replaced by a washer mortise and tenon process to eliminate the axial clearance of the gear shaft and avoid the risk of loosening; 4. The gear teeth are coated with a nylon layer to achieve meshing between nylons, reduce meshing transmission noise, and further reduce the noise of the assembly. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model; In the diagram: 1. Cover, 2. Nylon gear shaft A, 3. Dust cover, 4. Oil seal, 5. Housing, 5-1. Positioning step, 6. Washer A, 7. Deep groove ball bearing A, 8. Needle roller bearing A, 9. Spacer, 10. Nylon gear shaft B, 11. Washer B, 12. Deep groove ball bearing B, 13. Needle roller bearing B, 14. Spacer B, 15. Nylon layer. Detailed Implementation

[0013] The present invention will be further described below.

[0014] Example 1: A low-noise angle steering assembly includes a housing 5 made of plastic, which can achieve lightweighting and reduce operating noise. The housing 5 contains two mutually perpendicular meshing nylon gear shafts A2 and B10. Both nylon gear shafts A2 and B10 are configured as an integrated gear and shaft structure. The tooth surfaces of nylon gear shafts A2 and B10 are coated with a nylon layer 15. Through the meshing transmission of the gear nylon layers 15, the noise of the angle steering assembly is reduced.

[0015] One side of the nylon gear shaft A2 is fixed to the gear by a needle roller bearing A8, and the other side is fixed to the housing 5 by a deep groove ball bearing A7. A washer A6 is provided on one side of the deep groove ball bearing A7. One side of the nylon gear shaft B10 is fixed to the gear by a needle roller bearing B13, and the other side is fixed to the housing 1 by a deep groove ball bearing B12. The deep groove ball bearings A7 and B12 are thickened deep groove ball bearings. The outer diameter of the deep groove ball bearings A7 and B12 is larger than the inner diameter of the housing 5 at the corresponding position of the gear to eliminate the radial clearance of the assembly. Positioning steps 5-1 are respectively provided on the inner ring of the housing 5 at the corresponding positions of the deep groove ball bearings A7 and B12.

[0016] A washer B11 is provided on one side of the deep groove ball bearing B12. After the deep groove ball bearing is press-fitted, the nylon gear shafts A2 and B10 are riveted and fixed by washers A6 and B11 respectively to eliminate the axial clearance of the gear shafts.

[0017] A sealing assembly A is provided inside the housing 5 on one side of the gasket A6. The sealing assembly A includes an oil seal A4 located at the end of the housing 5 and a spacer A9 located between the oil seal A4 and the deep groove ball bearing A7. A sealing assembly B is provided inside the housing 5 on one side of the gasket B11. The sealing assembly B includes an oil seal B located at the end of the housing 5 and a spacer B14 located between the oil seal B and the deep groove ball bearing B12.

[0018] Dust covers 3 are provided at both ends of the housing 5. The dust covers 3 are respectively fitted onto the nylon gear shaft A2 and the nylon gear shaft B10. A cover 1 is provided on the outside of the dust covers. The cover 1 is respectively fitted onto the top of the nylon gear shaft A2 and the nylon gear shaft B10.

[0019] Example 2: A low-noise angle steering assembly includes a housing 5 made of aluminum alloy. Inside the housing 5 are two mutually perpendicular meshing nylon gear shafts A2 and B10. Both nylon gear shafts A2 and B10 are integrated gear and shaft structures. The tooth surfaces of nylon gear shafts A2 and B10 are coated with a nylon layer 15. Through the meshing transmission of the gear nylon layers 15, the noise of the angle steering assembly is reduced.

[0020] One side of the nylon gear shaft A2 is fixed by a needle roller bearing A8, and the other side is fixed in the housing 5 by a deep groove ball bearing A7. A washer A6 is provided on one side of the deep groove ball bearing A7. One side of the nylon gear shaft B10 is fixed by a needle roller bearing B13, and the other side is fixed in the housing 1 by a deep groove ball bearing B12. The deep groove ball bearings A7 and B12 are thickened deep groove ball bearings. The outer diameter of the deep groove ball bearings A7 and B12 is larger than the inner diameter of the housing 5 at the corresponding position of the gear to eliminate the radial clearance of the assembly. Positioning steps 5-1 are respectively provided on the inner ring of the housing 5 at the corresponding positions of the deep groove ball bearings A7 and B12. A washer B11 is provided on one side of the deep groove ball bearing B12. After the deep groove ball bearings are press-fitted, the nylon gear shafts A2 and B10 are riveted and fixed by washers A6 and B11 respectively to eliminate the axial clearance of the gear shafts. A sealing assembly A is provided in the housing 5 on the side of washer A6. The sealing assembly A includes an oil seal A4 at the end of the housing 5 and a spacer A9 between the oil seal A4 and the deep groove ball bearing A7. A sealing assembly B is provided in the housing 5 on the side of washer B11. The sealing assembly B includes an oil seal B at the end of the housing 5 and a spacer B14 between the oil seal B and the deep groove ball bearing B12. Dust covers 3 are provided at both ends of the housing 5. The dust covers 3 are respectively fitted onto the nylon gear shafts A2 and B10. A cover 1 is provided on the outside of the dust covers. The cover 1 is respectively fitted onto the top of the nylon gear shafts A2 and B10.

[0021] In practical implementation, a nylon gear shaft meshing transmission is adopted. The shaft body is steel, and the gear part is coated with a 0.3mm-1mm thick nylon coating, preferably 0.65mm, to ensure that the nylon layers are in contact during meshing, which can reduce the noise of the angular steering assembly and buffer shock absorption. The outer diameter of deep groove ball bearings A7 and B12 is increased from 55mm to 58mm, and the thickness is increased from 10mm to 13mm, eliminating the radial clearance of the assembly. Washers A6 and B11 are made of 1mm thick spring steel and are fixed by mortise and tenon joints to eliminate the axial clearance of the assembly, further improving the structural stability. According to customer requirements, the angular steering gear with nylon gear shaft structure can use an aluminum alloy housing or a plastic housing. Using a plastic housing can achieve weight reduction, reducing the overall weight by 30% compared to the original structure after assembly, and reducing the operating noise by more than 15dB.

[0022] The above embodiments of this utility model are merely examples to clearly illustrate this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent technical solutions also fall within the scope of this utility model, and the patent protection scope of this utility model should be defined by each claim.

Claims

1. A low-noise angle steering assembly, comprising a housing (5), characterized in that: The housing (5) contains two mutually perpendicular meshing nylon gear shafts A (2) and B (10). The housing (5) is made of plastic. The tooth surfaces of the nylon gear shafts A (2) and B (10) are respectively covered with nylon layers (15). Through the meshing transmission of the gear nylon layers (15), the noise of the angle steering assembly is reduced. One side of the gear of the nylon gear shaft A (2) is fixed by a needle roller bearing A (8), and the other side is fixed to the housing (5) by a deep groove ball bearing A (7). 5) Inside, a washer A (6) is provided on one side of the deep groove ball bearing A (7). One side of the nylon gear shaft B (10) is fixed by a needle roller bearing B (13), and the other side is fixed in the housing (5) by a deep groove ball bearing B (12). A washer B (11) is provided on one side of the deep groove ball bearing B (12). After the deep groove ball bearings are press-fitted, the nylon gear shaft A (2) and the nylon gear shaft B (10) are riveted and fixed by washers A (6) and B (11) respectively to eliminate the axial clearance of the gear shaft.

2. The low-noise angle steering assembly according to claim 1, characterized in that: The deep groove ball bearings A (7) and B (12) are configured as thickened deep groove ball bearings. The outer diameter of the deep groove ball bearings A (7) and B (12) is larger than the inner diameter of the housing (5) at the corresponding position of the gear, so as to eliminate the radial clearance of the assembly.

3. The low-noise angle steering assembly according to claim 1, characterized in that: Positioning steps (5-1) are respectively provided at the inner ring of the housing (5) and at the corresponding positions of the deep groove ball bearing A (7) and the deep groove ball bearing B (12).

4. The low-noise angle steering assembly according to claim 1, characterized in that: Both the nylon gear shaft A (2) and the nylon gear shaft B (10) are configured as an integrated structure of gear and shaft.

5. The low-noise angle steering assembly according to claim 1, characterized in that: A sealing assembly A is provided in the housing (5) on one side of the gasket A (6). The sealing assembly A includes an oil seal A (4) at the end of the housing (5) and a spacer A (9) between the oil seal A (4) and the deep groove ball bearing A (7). A sealing assembly B is provided in the housing (5) on one side of the gasket B (11). The sealing assembly B includes an oil seal B at the end of the housing (5) and a spacer B (14) between the oil seal B and the deep groove ball bearing B (12).

6. The low-noise angle steering assembly according to claim 1, characterized in that: Dust covers (3) are provided at both ends of the housing (5). The dust covers (3) are respectively fitted onto the nylon gear shaft A (2) and the nylon gear shaft B (10). A cover (1) is provided on the outside of the dust cover (3). The cover (1) is respectively fitted onto the top of the nylon gear shaft A (2) and the nylon gear shaft B (10).

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