Column sleeve and steering column

Abstract

The utility model discloses a column sleeve which comprises a hollow column body and a crumple strip, the crumple strip is installed on the outer wall of the hollow column body, an installation groove is formed in the inner wall of one end of the hollow column body, and the inner surface of the installation groove protrudes towards the outer side of the hollow column body compared with the inner wall face of the hollow column body. The hollow column body is connected with the crumple strip through a fixed connecting piece, and the fixed connecting piece is installed at the position of the installation groove. The utility model further discloses a steering column. The mounting groove is formed in the column sleeve and used for mounting the fixed connecting piece, and the fixed connecting piece is located in the mounting groove, so that interference with the bearing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of steering columns, in particular to a column sleeve and a steering column. Background Art

[0002] In the prior art, the steering shaft is supported by bearings in the column sleeve. Generally speaking, the first bearing is arranged at the rear end close to the steering wheel, and the second bearing is arranged at the front end away from the steering wheel to support the steering shaft in the column sleeve. However, in order to obtain a better support effect and meet the parameter requirements, an additional third bearing is added to the middle part of the column sleeve. Therefore, the first bearing is at the rear end, the third bearing is in the middle part and the second bearing is at the front end. If a larger bearing is used for the third bearing, there is a risk of interference between the column sleeve and the bearing during assembly.

[0003] Therefore, it is necessary to design a column sleeve and a steering column that avoid interference with the bearing. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a column sleeve and a steering column which can avoid interference with bearings.

[0005] The technical solution of the utility model provides a column sleeve, comprising a hollow cylinder and a crush strip, wherein the crush strip is installed on the outer wall of the hollow cylinder, and an installation groove is provided on the inner wall of one end of the hollow cylinder, and the inner surface of the installation groove protrudes toward the outer side of the hollow cylinder compared to the inner wall surface of the hollow cylinder, and the hollow cylinder is connected to the crush strip by a fixing member, and the fixing member is installed at the installation groove.

[0006] Furthermore, the inner surface of the fastening member is located outside the inner wall surface of the hollow cylinder.

[0007] Furthermore, the mounting groove includes an opening portion, and the opening portion is located at the end of the hollow cylinder.

[0008] Furthermore, the mounting groove also includes an arc-shaped edge.

[0009] Furthermore, the outer surface of the mounting groove protrudes from the outer wall surface of the hollow cylinder.

[0010] The utility model also provides a steering column, comprising a steering shaft and a bearing, and also comprising any one of the column sleeves described above, wherein the steering shaft is located inside the column sleeve, and the bearing is installed between the column sleeve and the steering shaft.

[0011] Furthermore, the steering shaft comprises an inner shaft tube and an outer shaft tube, the outer shaft tube is sleeved on the outer side of the inner shaft tube, and two bearings are installed between the outer shaft tube and the column sleeve.

[0012] Furthermore, the steering column also includes a guide cylinder, and a bearing is also provided between the inner shaft tube and the guide cylinder.

[0013] Furthermore, one of the bearings is installed at a position close to the installation groove.

[0014] After adopting the above technical solution, the following beneficial effects are achieved:

[0015] The utility model provides a mounting groove on the column sleeve for mounting a fixing part, and the fixing part is located in the mounting groove to avoid interference with the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of a column sleeve in one embodiment of the utility model;

[0018] Figure 2 It is a top view of a column sleeve in one embodiment of the utility model;

[0019] Figure 3 yes Figure 1 A partial enlarged view of

[0020] Figure 4 is a three-dimensional diagram of a steering column in one embodiment of the utility model;

[0021] Figure 5 is a cross-sectional view of a steering column in one embodiment of the utility model;

[0022] Figure 6 yes Figure 5 A partial enlarged view of .

[0023] Reference table of reference numerals:

[0024] Hollow cylinder 1: mounting groove 11, opening 111, arc-shaped edge 112;

[0025] Collapse strip 2, fastening member 3;

[0026] Steering shaft 10: inner shaft tube 101, outer shaft tube 102;

[0027] Bearing 20 , guide cylinder 30 , column sleeve 40 . DETAILED DESCRIPTION

[0028] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0029] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a variety of structural modes and implementation modes can be replaced by those skilled in the art. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0030] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0031] In some embodiments of the present invention, Figure 1-2 As shown, the column sleeve includes a hollow cylinder 1 and a crush strip 2, the crush strip 2 is installed on the outer wall of the hollow cylinder 1, and a mounting groove 11 is provided on the inner wall of one end of the hollow cylinder 1. The inner surface of the mounting groove 11 protrudes toward the outer side of the hollow cylinder 1 compared to the inner wall of the hollow cylinder 1, and the hollow cylinder 1 is connected to the crush strip 2 by a fixing member 3, and the fixing member 3 is installed at the mounting groove 11.

[0032] Specifically, Figure 1 As shown, the hollow cylinder 1 is a cylindrical hollow cylinder, and the hollow cylinder 1 includes an inner wall surface and an outer wall surface. The inner wall surface of the hollow cylinder 1 needs to be installed with a bearing 20 (such as Figure 5 As shown), a collapse strip 2 is installed on the outer wall of the hollow cylinder 1.

[0033] like Figure 2 As shown, the crush bar 2 is a long strip of plate, and the crush bar 2 is connected to the hollow column 1 through the fixing member 3 and other connecting members (such as screws, etc.).

[0034] The existing hollow cylinder is not provided with a mounting groove. After the fixing member is connected to the collapse strip, part of the structure protrudes from the inner wall surface of the hollow cylinder. When the bearing is installed with the hollow cylinder, interference is likely to occur.

[0035] like Figure 3 As shown, a mounting groove 11 is provided on the inner wall of the hollow cylinder 1 in this embodiment, and the inner surface of the mounting groove 11 is convex toward the outer side of the hollow cylinder 1 compared with the inner wall surface of the hollow cylinder 1, that is, the mounting groove 11 forms a concave surface on the inner wall surface of the hollow cylinder 1. When the fixing member 3 is installed in the mounting groove 11, the fixing member 3 will not protrude from the inner wall surface of the hollow cylinder 1. Therefore, when the bearing 20 is installed in the hollow cylinder 1, it will not interfere with the fixing member 3.

[0036] Preferably, the fastener 3 may be a rivet, a bolt, a screw or the like.

[0037] Furthermore, if Figure 3 As shown, the inner surface of the fixing part 3 is outside the inner wall surface of the hollow cylinder 1, that is, there is a certain distance between the inner surface of the fixing part 3 and the inner surface of the hollow cylinder 1, and the inner surface of the fixing part 3 is recessed outward relative to the inner wall surface of the hollow cylinder 1 to avoid interference with the bearing.

[0038] Optionally, the inner surface of the fastening member 3 may also be flush with the inner wall surface of the hollow cylinder 1 as long as it does not interfere with the bearing.

[0039] Furthermore, if Figure 3 As shown, the mounting groove 11 includes an opening portion 111 , and the opening portion 111 is located at the end of the hollow cylinder 1 .

[0040] The opening 111 of the mounting groove 11 is aligned with the end of the hollow cylinder 1 , which facilitates the processing of the mounting groove 11 .

[0041] Preferably, the installation groove 11 may not include the opening portion 111 , and the edge of the installation groove 11 is continuous and located at the inner side of the end of the hollow cylinder 1 .

[0042] Furthermore, if Figure 3 As shown, the installation groove 11 also includes an arc-shaped edge 112. The edge of the installation groove 11 is an arc-shaped edge, which is convenient for processing the installation groove 11.

[0043] Optionally, the edge of the installation groove 11 may also be composed of a plurality of straight edges to form a rectangular installation groove.

[0044] Furthermore, if Figure 3 As shown, the outer surface of the mounting groove 11 protrudes from the outer wall of the hollow cylinder 1. The mounting groove 11 is stamped, and the outer surface of the mounting groove 11 protrudes from the outer wall of the hollow cylinder 1, while the inner surface of the mounting groove 11 is recessed relative to the inner wall of the hollow cylinder 1.

[0045] The outer surface of the mounting groove 11 protrudes from the platform formed by the hollow cylinder 1 to facilitate contact and connection with the crush strip 2 .

[0046] In other embodiments of the present invention, Figure 4-6 As shown, the steering column includes a steering shaft 10 and a bearing 20 , and also includes a column sleeve 40 in any of the above embodiments. The steering shaft 10 is located inside the column sleeve 40 , and the bearing 20 is installed between the column sleeve 40 and the steering shaft 10 .

[0047] Specifically, Figure 5As shown, two bearings 20 are installed between the column sleeve 40 and the steering shaft 10 , wherein one bearing 20 is located near the mounting groove 11 and at one end of the column sleeve 40 , and the other bearing 20 is located at the other end of the column sleeve 40 .

[0048] Since the fastening member 3 is located inside the mounting groove 11 , interference between the bearing 20 and the fastening member 3 is avoided.

[0049] Furthermore, if Figure 5 As shown, the steering shaft 10 includes an inner shaft tube 101 and an outer shaft tube 102 . The outer shaft tube 102 is sleeved on the outer side of the inner shaft tube 101 , wherein two bearings 20 are installed between the outer shaft tube 102 and the column sleeve 40 .

[0050] Furthermore, if Figure 5 As shown, the steering column further includes a guide tube 30 , and a bearing 20 is also provided between the inner shaft tube 101 and the guide tube 30 .

[0051] In the utility model, a mounting groove is arranged on the column sleeve for mounting the fixing member, and the fixing member is located in the mounting groove to avoid interference with the bearing.

[0052] The above description is only the principle and preferred embodiment of the utility model. It should be pointed out that for ordinary technicians in this field, on the basis of the principle of the utility model, several other variations can be made, which should also be regarded as the protection scope of the utility model.

Claims

1. A column sleeve, comprising a hollow cylinder and a collapse strip, wherein the collapse strip is mounted on the outer wall of the hollow cylinder, characterized in that: A mounting groove is provided on the inner wall of one end of the hollow cylinder, and the inner surface of the mounting groove protrudes toward the outer side of the hollow cylinder compared to the inner wall surface of the hollow cylinder. The hollow cylinder is connected to the collapse strip through a fixing member, and the fixing member is installed at the mounting groove.

2. The column sleeve according to claim 1, characterized in that: The inner surface of the fixing member is located outside the inner wall surface of the hollow cylinder.

3. The column sleeve according to claim 1, characterized in that: The mounting groove comprises an opening portion, and the opening portion is located at the end of the hollow cylinder.

4. The column sleeve according to claim 2, characterized in that: The mounting slot also includes an arc-shaped edge.

5. The column sleeve according to claim 1, characterized in that: The outer surface of the mounting groove protrudes from the outer wall surface of the hollow cylinder.

6. A steering column, comprising a steering shaft and a bearing, characterized in that: It also includes the column sleeve according to any one of claims 1 to 5, wherein the steering shaft is located inside the column sleeve, and the bearing is installed between the column sleeve and the steering shaft.

7. The steering column according to claim 6, characterized in that: The steering shaft comprises an inner shaft tube and an outer shaft tube, wherein the outer shaft tube is sleeved on the outer side of the inner shaft tube, and two bearings are installed between the outer shaft tube and the column sleeve.

8. The steering column according to claim 7, characterized in that: The steering column also includes a guide cylinder, and a bearing is also provided between the inner shaft tube and the guide cylinder.

9. The steering column according to claim 7, characterized in that: One of the bearings is installed at a position close to the installation groove.

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