Self-adaptive bearing and vehicle steering column

Abstract

The utility model discloses a self-adaptive bearing and a vehicle steering column. The self-adaptive bearing comprises an outer ring and an inner ring which are coaxial, a plurality of rolling pieces are contained between the outer ring and the inner ring, the axial section of the inner wall of the outer ring is an arc-shaped face, a groove used for containing the rolling pieces is formed in the face, facing the outer ring, of the inner ring in the circumferential direction, the inner wall of the outer ring abuts against the rolling pieces, and the space between the groove and the rolling pieces is filled with elastic supporting pieces. The self-adaptive bearing comprises an outer ring, an inner ring and a rolling piece, the axial section of the inner wall of the outer ring is an arc-shaped surface, and a groove used for containing the rolling piece is formed in the surface, facing the outer ring, of the inner ring in the circumferential direction. According to the self-adaptive bearing disclosed by the utility model, the axial section of the inner wall of the outer ring is the arc-shaped surface, so that the outer ring can slightly move relative to the inner ring while abutting against a rolling piece, and after the self-adaptive bearing is assembled on a main shaft, the concentricity deviation between the main shaft and a tubular column shell can be reduced by adjusting a gap between the inner ring and the outer ring of the self-adaptive bearing.

Description

Technical Field

[0001] The utility model relates to the technical field related to vehicles, in particular to an adaptive bearing and a vehicle steering column. Background Art

[0002] like Figure 1 and Figure 2 As shown, the existing vehicle steering column needs to use three bearings to support the main shaft 11' in the steering column 1'. Specifically, the first bearing 2', the second bearing 3' and the third bearing 4' are respectively arranged from the steering wheel end (right end) to the intermediate shaft end (left end) along the axial direction. The first bearing 2' and the second bearing 3' are arranged between the main shaft 11' and the column housing 12', and the third bearing 4' is arranged between the main shaft 11' and the guide cylinder 5'.

[0003] However, since the third bearing 4' is a stamping part, its precision is low. Therefore, after all three bearings between the main shaft 11', the column housing 12' and the guide cylinder 5' are assembled, the inner ring and the outer ring of the third bearing 4' have different axial positions, so there is a concentricity deviation between the main shaft 11' and the column housing 12', and this concentricity deviation exceeds the allowable value. Moreover, the third bearing 4' is necessary to support the main shaft 11' and cannot be removed, resulting in poor concentricity of the existing steering column 1'.

[0004] The reason for the poor concentricity of the steering column 1' is that the third bearing 4' cannot be adjusted adaptively. Figure 3 As shown, the existing third bearing 4', its ball 41' receives pressure F' in four directions, which causes the outer ring 42' and the inner ring 43' of the third bearing 4' to lack freedom. When the third bearing 4' is assembled with the steering column 1', the positions of the outer ring 42' and the inner ring 43' are restricted and fixed by the ball 41' and cannot be adjusted. After the third bearing 4' is assembled with the steering column 1', the third bearing 4' is supported and fixed between the main shaft 11' and the guide cylinder 5'. When the accuracy of the third bearing 4' is low, the concentricity deviation between the main shaft 11' and the column housing 12' will increase. Utility Model Content

[0005] Based on this, it is necessary to provide an adaptive bearing and a vehicle steering column to address the technical problem that the bearings in the prior art cannot be adaptively adjusted, thereby increasing the concentricity deviation between the assembled main shaft and the column housing.

[0006] The utility model provides an adaptive bearing, comprising: a coaxial outer ring and an inner ring, a plurality of rolling elements are accommodated between the outer ring and the inner ring, the axial cross-section of the inner wall of the outer ring is an arc-shaped surface, the surface of the inner ring facing the outer ring is provided with grooves for accommodating the rolling elements along the circumferential direction, the inner wall of the outer ring abuts against the rolling elements, and an elastic support element is filled between the groove and the rolling elements.

[0007] Furthermore, the elastic support member is two first support members, and the two first support members are respectively filled between the rolling member and the two side walls of the groove.

[0008] Furthermore, the first supporting member is a rubber supporting member.

[0009] Furthermore, it also includes two second support members, the two second support members are respectively filled between the two first support members and the rolling member, and the second support members are rigid support members.

[0010] Furthermore, the second support member is a metal support member.

[0011] Furthermore, the two second support members form an inner groove with a trapezoidal axial cross section.

[0012] Furthermore, the inner ring includes two inner sub-rings, and the groove is provided at the joint of the two inner sub-rings.

[0013] Furthermore, the inner ring also includes a snap ring, and the snap ring is snap-connected with the two inner sub-rings respectively.

[0014] Furthermore, the two inner sub-rings are provided with protruding structures on surfaces away from the outer ring, and the clamping ring is clamped with the protruding structures.

[0015] The utility model provides a vehicle steering column, comprising a steering column, a guide cylinder and the adaptive bearing as described above, wherein the guide cylinder is sleeved outside the steering column, the steering column comprises a main shaft and a column shell sleeved outside the main shaft, the adaptive bearing is arranged between the guide cylinder and the steering column, the inner ring of the adaptive bearing sleeves the main shaft, and the outer ring of the adaptive bearing abuts against the guide cylinder.

[0016] The adaptive bearing of the utility model comprises an outer ring, an inner ring and a rolling element, the axial section of the inner wall of the outer ring is an arcuate surface, and the surface of the inner ring facing the outer ring is provided with a groove for accommodating the rolling element along the circumferential direction. In the utility model, since the axial section of the inner wall of the outer ring is an arcuate surface, the outer ring can slightly move relative to the inner ring while resisting the rolling element. After the adaptive bearing is assembled on the main shaft, the concentricity deviation between the main shaft and the column housing can be reduced by adjusting the gap between the inner ring and the outer ring of the adaptive bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of a conventional vehicle steering column;

[0018] Figure 2 for Figure 1 A partial enlarged schematic diagram of

[0019] Figure 3 is a cross-sectional view of an existing bearing;

[0020] Figure 4 A cross-sectional view of an adaptive bearing according to an embodiment of the utility model;

[0021] Figure 5 A cross-sectional view of a vehicle steering column according to an embodiment of the present utility model;

[0022] Figure 6 for Figure 5 A partial enlarged schematic diagram of .

[0023] Marking Description

[0024] 1', steering column; 11', main shaft; 12', column housing; 2', first bearing; 3', second bearing; 4', third bearing; 41', ball; 42', outer ring; 43', inner ring; 5', guide cylinder; 1, adaptive bearing; 11, outer ring; 111, inner wall of outer ring; 12, inner ring; 121, groove; 122, inner sub-ring; 123, snap ring; 13, rolling element; 14, first support member; 15, second support member; 16, inner groove; 2, steering column; 21, main shaft; 22, column housing; 3, guide cylinder; 4, first bearing; 5, second bearing. DETAILED DESCRIPTION

[0025] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] like Figure 4The figure is a schematic structural diagram of an adaptive bearing 1 according to an embodiment of the utility model, comprising: a coaxial outer ring 11 and an inner ring 12, a plurality of rolling elements 13 are accommodated between the outer ring 11 and the inner ring 12, an axial cross-section of an outer ring inner wall 111 of the outer ring 11 is an arc-shaped surface, a surface of the inner ring 12 facing the outer ring 11 is provided with an accommodating groove 121 for accommodating the rolling element 13 along the circumferential direction, the outer ring inner wall 111 abuts against the rolling element 13, and an elastic support member is filled between the accommodating groove 121 and the rolling element 13.

[0027] Specifically, Figure 4 : is an axial cross-sectional view of the adaptive bearing 1. The outer ring 11 and the inner ring 12 are coaxial, and a rolling element 13 is accommodated in the middle. The rolling element 13 is preferably a ball. There are multiple rolling elements 13 and they are distributed along the circumference of the inner ring 12. The surface of the inner ring 12 facing the outer ring 11 is provided with an accommodating groove 121 for accommodating the rolling element 13 along the circumferential direction, and the inner wall 111 of the outer ring contacts the rolling element 13.

[0028] Since the axial cross-section of the inner wall 111 of the outer ring is an arc-shaped surface, the outer ring 11 can move relative to the inner ring 12 along the arc-shaped surface, approaching or moving away from the inner ring 12, while resisting the rolling element 13, so as to adjust the gap between the outer ring 11 and the inner ring 12. When the outer ring 11 and the inner ring 12 move relative to each other, the force F1 applied by the inner wall 111 of the outer ring to the rolling element 13 will be converted into a force F2 applied by the rolling element 13 to the receiving groove 121. Since an elastic support member is filled between the receiving groove 121 and the rolling element 13, the rolling element 13 can compress the elastic support member and make a certain movement in the direction of the receiving groove 121. Therefore, if Figure 5 and Figure 6 As shown, after the adaptive bearing 1 is assembled on the main shaft 21 , the concentricity deviation between the main shaft 21 and the column housing 22 can be reduced by adjusting the gap between the outer ring 11 and the inner ring 12 of the adaptive bearing 1 .

[0029] The adaptive bearing of the utility model comprises an outer ring, an inner ring and a rolling element, the axial section of the inner wall of the outer ring is an arcuate surface, and the surface of the inner ring facing the outer ring is provided with a groove for accommodating the rolling element along the circumferential direction. In the utility model, since the axial section of the inner wall of the outer ring is an arcuate surface, the outer ring can slightly move relative to the inner ring while resisting the rolling element. After the adaptive bearing is assembled on the main shaft, the concentricity deviation between the main shaft and the column housing can be reduced by adjusting the gap between the inner ring and the outer ring of the adaptive bearing.

[0030] like Figure 4Another embodiment of the utility model is shown as an adaptive bearing 1, comprising: a coaxial outer ring 11 and an inner ring 12, a plurality of rolling elements 13 are accommodated between the outer ring 11 and the inner ring 12, the axial cross section of the outer ring inner wall 111 of the outer ring 11 is an arcuate surface, the surface of the inner ring 12 facing the outer ring 11 is provided with a receiving groove 121 for accommodating the rolling element 13 along the circumferential direction, and the outer ring inner wall 111 abuts against the rolling element 13, and an elastic support member is filled between the receiving groove 121 and the rolling element 13, and the elastic support member is two first support members 14, and the two first support members 14 are respectively filled between the rolling element 13 and the groove walls on both sides of the receiving groove 121;

[0031] It also includes two second support members 15, the two second support members 15 are respectively filled between the two first support members 14 and the rolling member 13, and the second support members 15 are rigid support members;

[0032] The two second support members 15 form an inner groove 16 with a trapezoidal axial cross section;

[0033] The inner ring 12 includes two inner sub-rings 122, and the receiving groove 121 is set at the joint of the two inner sub-rings 122. The snap ring 123 is snapped with the two inner sub-rings 122 respectively. The two inner sub-rings 122 are provided with protruding structures on the surface away from the outer ring 11, and the snap ring 123 is snapped with the protruding structures.

[0034] Specifically, if Figure 4 The figure shows an axial cross-sectional view of the adaptive bearing 1. The outer ring 11 and the inner ring 12 are coaxial, and a rolling element 13 is accommodated in the middle. The rolling element 13 is preferably a ball. There are multiple rolling elements 13 and they are distributed along the circumference of the inner ring 12. The surface of the inner ring 12 facing the outer ring 11 is provided with an accommodating groove 121 for accommodating the rolling element 13 along the circumferential direction, and the inner wall 111 of the outer ring contacts the rolling element 13.

[0035] The inner ring 12 includes two inner sub-rings 122, and the snap rings 123 are snapped with the two inner sub-rings 122 respectively. The two inner sub-rings 122 are provided with protruding structures on the surfaces away from the outer ring 11, and the snap rings 123 are snapped with the protruding structures, so as to snap and fix the two inner sub-rings 122. A receiving groove 121 is provided at the joint of the two inner sub-rings 122.

[0036] An elastic support member is filled between the accommodating groove 121 and the rolling member 13 . The elastic support member is two first support members 14 . The two first support members 14 are respectively filled between the rolling member 13 and the two side walls of the accommodating groove 121 .

[0037] When the outer ring 11 and the inner ring 12 move relative to each other, the force F1 exerted by the inner wall 111 of the outer ring on the rolling element 13 will be converted into a force F2 exerted by the rolling element 13 on the receiving groove 121. Two first support members 14 are arranged in the receiving groove 121. Since the first support members 14 are filled between the rolling element 13 and the groove walls on both sides of the receiving groove 121, and the first support members 14 are elastic support members, the rolling element 13 can compress the elastic support members and make a certain movement toward the receiving groove 121.

[0038] In one embodiment, the first support member 14 is a rubber support member.

[0039] This embodiment provides a better deformation effect through rubber.

[0040] Meanwhile, the accommodating groove 121 also accommodates the second supporting member 15 , which is respectively filled between the two first supporting members 14 and the rolling member 13 , and is a rigid supporting member, providing rigid support for the rolling member 13 .

[0041] In one embodiment, the second support member 15 is a metal support member.

[0042] This embodiment provides good rigid support for the rolling element through the metal support element.

[0043] In addition, the two second support members 15 form an inner groove 16 with a trapezoidal axial cross-section. The inner groove 16 gradually increases in opening from the inner ring 12 to the outer ring 11. The rolling member 13 is clamped from both sides of the rolling member 13 through the inner groove 16 to ensure the reliability of the rotation of the rolling member 13.

[0044] In this embodiment, two inner sub-rings are clamped with a clamping ring to form an inner ring, and an elastic first support member is filled in the groove of the inner ring to provide the inner ring and the outer ring with freedom of movement, and a second support member is used to provide rigid support for the rolling element. In this embodiment, the concentricity deviation between the column housing and the main shaft is reduced by adjusting the gap between the inner and outer rings, and the structure is simple to assemble.

[0045] like Figure 5 and Figure 6 The figure shows a vehicle steering column of the utility model, comprising a steering column 2, a guide cylinder 3 and the adaptive bearing 1 as described above, wherein the guide cylinder 3 is sleeved outside the steering column 2, the steering column 2 comprises a main shaft 21 and a column housing 22 sleeved outside the main shaft 21, the adaptive bearing 1 is arranged between the guide cylinder 3 and the steering column 2, and the inner ring 12 of the adaptive bearing 1 sleeves the main shaft 21, and the outer ring 11 of the adaptive bearing 1 contacts the guide cylinder 3.

[0046] Specifically, the main shaft 21 and the column housing 22 are supported by the first bearing 4 and the second bearing 5, and the first and second bearings 4 and 5 can be existing ordinary rolling bearings. The adaptive bearing 1 as described above is arranged between the guide cylinder 3 and the steering column 2. The inner ring 12 of the adaptive bearing 1 covers the main shaft 21, and the outer ring 11 of the adaptive bearing 1 contacts the guide cylinder 3. Since the gap between the outer ring 11 and the inner ring 12 of the adaptive bearing 1 is adjustable, after the main shaft 21 and the column housing 22 are fixed, when the adaptive bearing 1 is put on, if the guide cylinder 3 and the main shaft 21 are not concentric, the outer ring 11 of the adaptive bearing 1 is subjected to force, thereby adjusting the gap between the inner ring 12, so that the guide cylinder 3 is adjusted to be concentric with the main shaft 21, thereby avoiding interference with the main shaft 21 and ensuring the concentricity of the main shaft 21 and the column housing 22.

[0047] This embodiment can reduce the concentricity deviation between the main shaft and the column housing by adjusting the gap between the inner ring and the outer ring of the adaptive bearing, and the structure is simple to assemble.

[0048] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An adaptive bearing (1), characterized in that: include: A coaxial outer ring (11) and an inner ring (12), wherein a plurality of rolling elements (13) are accommodated between the outer ring (11) and the inner ring (12), wherein the axial cross-section of the outer ring inner wall (111) of the outer ring (11) is an arc-shaped surface, and the surface of the inner ring (12) facing the outer ring (11) is provided with a receiving groove (121) for accommodating the rolling element (13) along the circumferential direction, the outer ring inner wall (111) abuts against the rolling element (13), and an elastic support member is filled between the receiving groove (121) and the rolling element (13).

2. The adaptive bearing (1) according to claim 1, characterized in that The elastic support members are two first support members (14), and the two first support members (14) are respectively filled between the rolling member (13) and the two side groove walls of the accommodating groove (121).

3. The adaptive bearing (1) according to claim 2, characterized in that The first support member (14) is a rubber support member.

4. The adaptive bearing (1) according to claim 2, characterized in that It also comprises two second support members (15), wherein the two second support members (15) are respectively filled between the two first support members (14) and the rolling member (13), and the second support members (15) are rigid support members.

5. The adaptive bearing (1) according to claim 4, characterized in that The second support member (15) is a metal support member.

6. The adaptive bearing (1) according to claim 4, characterized in that The two second support members (15) form an inner groove (16) with a trapezoidal axial cross section.

7. The adaptive bearing (1) according to any one of claims 1 to 6, characterized in that The inner ring (12) comprises two inner sub-rings (122), and the receiving groove (121) is provided at the joint of the two inner sub-rings (122).

8. The adaptive bearing (1) according to claim 7, characterized in that The inner ring (12) further comprises a snap ring (123), and the snap ring (123) is snap-connected with the two inner sub-rings (122) respectively.

9. The adaptive bearing (1) according to claim 8, characterized in that The two inner sub-rings (122) are provided with protruding structures on the surfaces away from the outer ring (11), and the clamping ring (123) is clamped with the protruding structures.

10. A vehicle steering column, characterized in that: The invention comprises a steering column (2), a guide cylinder (3) and an adaptive bearing (1) as claimed in any one of claims 1 to 9, wherein the guide cylinder (3) is sleeved on the outside of the steering column (2), the steering column (2) comprises a main shaft (21) and a column housing (22) sleeved on the outside of the main shaft (21), the adaptive bearing (1) is arranged between the guide cylinder (3) and the steering column (2), and the inner ring (12) of the adaptive bearing (1) sleeves the main shaft (21), and the outer ring (11) of the adaptive bearing (1) contacts the guide cylinder (3).

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