High-rigidity steering column

Abstract

The utility model discloses a high-rigidity steering column and belongs to the technical field of automobile steering columns. The transmission device comprises a tubular column assembly, a first transmission shaft, a second transmission shaft and a third transmission shaft which are connected through splines at a time, the second transmission shaft is of a ball telescopic structure, and a dust cover assembly is arranged on the third transmission shaft and is in small interference fit with a sealing ring in the dust cover assembly. The end, connected with the tubular column assembly, of the first transmission shaft is fixed through a deep groove ball bearing, the outer side of the deep groove ball bearing is clamped and fixed through a bearing support and a bearing pressing plate which are connected with each other, and the bearing support is connected to the tubular column assembly. The integral rigidity of the steering column and transmission shaft assembly can be improved, and the transmission shaft can be prevented from swinging during rotation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile steering column, specifically relates to a high rigidity steering column. BACKGROUND

[0002] The steering system is an important component of the automobile, the steering column assembly is the connecting part installed between the steering wheel and the steering gear, and is mainly used for controlling the advancing direction of the automobile and transmitting the torque. With the development of the automobile industry, the internal parts of the automobile are arranged more and more compactly, and the number of transmission shafts is increased from two sections to three sections. When the steering wheel is rotated, the three-section transmission shafts will swing, the rotating torque range of the steering wheel is enlarged, and the dust cover produces abnormal sound and other fault phenomena, therefore, the transmission shaft needs to be axially positioned to prevent swinging. UTILITARY MODEL

[0003] The utility model is just in view of the above problem, make up the deficiency of prior art, provide a kind of high rigidity steering column;The utility model can improve the overall rigidity of steering column with transmission shaft assembly, can prevent transmission shaft from swinging when rotating.

[0004] To achieve the above object, the utility model adopts the following technical scheme.

[0005] The utility model provides a kind of high rigidity steering column, including sequentially through spline connection's pipe column assembly, first transmission shaft, second transmission shaft and third transmission shaft, the second transmission shaft is ball telescopic structure, the third transmission shaft is provided with dust cover assembly and with the small interference fit of sealing ring in the dust cover assembly, it is characterized in that, the first transmission shaft is fixed using deep groove ball bearing on the end connected with the pipe column assembly, the deep groove ball bearing outside is clamped and fixed by bearing support and bearing pressing plate connected with each other, and the bearing support is connected on the pipe column assembly.

[0006] Further, the deep groove ball bearing is provided with rubber sleeve outside, the bearing support and the bearing pressing plate are correspondingly provided with half annular groove inside, the rubber sleeve and the deep groove ball bearing are integrally fixed in the annular mounting groove formed by the bearing support and the bearing pressing plate.

[0007] More further, annular assembly groove for assembling the deep groove ball bearing is provided in the hole of the rubber sleeve.

[0008] Still more further, one side of the rubber sleeve is provided with chamfer, the chamfer is convenient for assembling the deep groove ball bearing into the annular assembly groove.

[0009] Still more further, the material of the rubber sleeve is nitrile rubber.

[0010] Further, the bearing support is provided with two waist-shaped holes and a round hole on both sides correspondingly, and the bearing support is connected to the pipe column assembly through bolts penetrating the waist-shaped holes and the round hole.

[0011] Further, the bearing support and the bearing pressing plate are connected through bolts and spring washers.

[0012] The utility model discloses a high rigidity steering column assembly structure can further fix the position of first transmission shaft, prevent swing, reduce the fluctuation of steering wheel rotation moment, simultaneously, prevent the generation of the problem such as dust cover abnormal sound of rotation due to the third transmission shaft position deviation.

[0013] The utility model provides a high rigidity steering column assembly structure can further fix the position of first transmission shaft, prevent swing, reduce the fluctuation of steering wheel rotation moment, simultaneously, prevent the generation of the problem such as dust cover abnormal sound of rotation due to the third transmission shaft position deviation. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to make the technical problem, technical scheme and beneficial effect solved by the utility model more clearly, the following is in combination with the specific embodiment, and the utility model is further detailed.The specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0015] Figure 1 It is the whole structure schematic diagram of the utility model.

[0016] Figure 2 It is the explosion structure schematic diagram of the first transmission shaft and pipe column assembly connecting place of the utility model.

[0017] Figure 3 It is the structure schematic diagram of the bearing support of the utility model.

[0018] Figure 4 It is the structure schematic diagram of the bearing pressing plate of the utility model.

[0019] Figure 5 It is the half cut structure schematic diagram of the rubber sleeve of the utility model.

[0020] Marked in the drawing: 1 is upper pipe column assembly, 2 is first transmission shaft, 3 is second transmission shaft, 4 is third transmission shaft, 5 is dust cover, 6 is deep groove ball bearing, 7 is bearing support, 8 is bearing pressing plate, 9 is rubber sleeve, 10 is half ring-shaped groove, 11 is ring-shaped assembly groove, 12 is chamfer, 13 is waist-shaped hole, 14 is round hole, 15 is bolt, 16 is spring washer. SPECIFIC EMBODIMENT

[0021] In combination with the drawings, the embodiment provides a high-rigidity steering column, which comprises a tube column assembly, a first transmission shaft 2, a second transmission shaft 3 and a third transmission shaft 4 connected in sequence by means of spline connection. The second transmission shaft 3 is of a ball bearing telescopic structure, and can be adjusted in length to meet the requirements of vehicle installation and shock absorption. The third transmission shaft 4 is provided with a dust cover 5 assembly and is in small interference fit with a sealing ring in the dust cover 5 assembly.

[0022] The first transmission shaft 2 is fixed at one end connected with the tube column assembly by using a deep groove ball bearing 6. Specifically, the first transmission shaft 2 passes through the deep groove ball bearing 6 to form axial fixation, and the first transmission shaft 2 cannot swing when rotating. An outer side of the deep groove ball bearing 6 is provided with a rubber sleeve 9, a hole of the rubber sleeve 9 is provided with an annular assembly groove 11 for assembling the deep groove ball bearing 6, and one side of the rubber sleeve 9 is provided with a chamfer 12, which facilitates assembly of the deep groove ball bearing 6 into the annular assembly groove 11.

[0023] The material of the rubber sleeve 9 is nitrile rubber (NBR), which can produce slight deformation under stress, and can adjust the eccentricity problem caused by the deep groove ball bearing 6 and the first transmission shaft 2 to prevent the first transmission shaft 2 from rotating and being stuck.

[0024] The outer side of the deep groove ball bearing 6 and the rubber sleeve 9 is clamped and fixed by a bearing support 7 and a bearing pressing plate 8. The bearing support 7 and the bearing pressing plate 8 are connected by bolts 15 and spring washers 16. The bearing support 7 and the bearing pressing plate 8 are correspondingly provided with a semi-annular groove 10. The deep groove ball bearing 6 and the rubber sleeve 9 are fixed in the annular mounting groove formed by the bearing support 7 and the bearing pressing plate 8.

[0025] The bearing support 7 is correspondingly provided with two waist-shaped holes 13 and a circular hole 14 on both sides. The circular hole 14 is used for positioning, and the waist-shaped hole 13 is used for adjusting the position. The bearing support 7 is connected to the tube column assembly by the bolts 15 passing through the waist-shaped holes 13 and the circular hole 14, thereby realizing radial positioning of the first transmission shaft 2.

[0026] It can be understood that the above specific description of the present application is only used to illustrate the present application and is not limited to the technical solutions described in the embodiment of the present application. Those skilled in the art should understand that the present application can still be modified or replaced equivalently to achieve the same technical effect. As long as it meets the use requirements, it is within the protection scope of the present application.

Claims

1. A high-rigidity steering column comprising a tube column assembly, a first transmission shaft (2), a second transmission shaft (3) and a third transmission shaft (4) connected in sequence by spline, the second transmission shaft (3) being a ball telescopic structure, the third transmission shaft (4) being provided with a dust cover (5) assembly and being in small interference fit with a sealing ring in the dust cover (5) assembly, characterized in that, The first transmission shaft (2) is fixed by a deep groove ball bearing (6) at one end connected with the pipe column assembly, the deep groove ball bearing (6) is clamped and fixed by bearing support (7) and bearing pressing plate (8) connected with each other outside the deep groove ball bearing (6), and the bearing support (7) is connected on the pipe column assembly.

2. A high stiffness steering column according to claim 1, characterised in that The deep groove ball bearing (6) is provided with a rubber sleeve (9) outside, the bearing support (7) and the bearing pressing plate (8) are correspondingly provided with a semi-annular groove (10) inside, the rubber sleeve (9) and the deep groove ball bearing (6) are integrally fixed in the annular mounting groove formed by the bearing support (7) and the bearing pressing plate (8) together.

3. A high stiffness steering column according to claim 2, wherein The rubber sleeve (9) is provided with an annular assembly groove (11) in the hole for assembling the deep groove ball bearing (6).

4. A high stiffness steering column according to claim 3, wherein The rubber sleeve (9) is provided with a chamfer (12) on one side, which facilitates the assembly of the deep groove ball bearing (6) into the annular assembly groove (11).

5. A high stiffness steering column according to claim 3, wherein The material of the rubber sleeve (9) is nitrile rubber.

6. A high stiffness steering column according to claim 1, wherein The bearing support (7) is correspondingly provided with two waist-shaped holes (13) and a circular hole (14) on both sides, and the bearing support (7) is connected on the pipe column assembly by bolts (15) passing through the waist-shaped holes (13) and the circular hole (14).

7. A high stiffness steering column according to claim 1, wherein The bearing support (7) and the bearing pressing plate (8) are connected by bolts (15) and spring washers (16) from top to bottom.

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