Height adjustment mechanism for a steering column and steering column assembly

Abstract

The utility model relates to height adjusting mechanism and steering column assembly for steering column. Height adjusting mechanism includes: height adjusting support, mounting support, guide cylinder and height adjusting driver. Height adjusting support includes first side plate, it includes first part, second part and intermediate part. The first part of first side plate is connected with mounting support in first pivot position in a pivotable manner and is connected with guide cylinder in second pivot position in a pivotable manner, and the second part of first side plate is connected with height adjusting driver in a pivotable manner. The intermediate part of first side plate protrudes in the direction away from guide cylinder relative to first part and second part to provide accommodation space for guide cylinder. In the height adjusting mechanism of the utility model, guide cylinder can carry out raw material pressure casting, the height adjusting function of height adjusting support is reserved, the packaging space is improved, the structural conflict is avoided and the manufacturability and mechanical firmness of guide cylinder are improved.

Description

Technical Field

[0001] This utility model relates to the automotive field, and in particular to a height adjustment mechanism for a steering column and a steering column assembly including a steering column and a height adjustment mechanism for the steering column. Background Technology

[0002] The steering column is a crucial component of a car's steering system, transmitting the driver's steering inputs (torque and rotational movements) to the steering gear to achieve vehicle steering. Typically, one end of the steering column connects to the input shaft of the steering gear, and the other end connects to the steering wheel. A height adjustment mechanism for the steering column (and steering wheel) is used to adjust the height to accommodate different driver sizes and driving habits.

[0003] A height adjustment mechanism for a steering column typically includes a height adjustment bracket, a mounting bracket, and a guide tube, with at least a portion of the height adjustment bracket usually positioned between the mounting bracket and the guide tube. The height adjustment bracket is operatively connected to a height adjustment actuator (e.g., a motor or similar actuator) that moves the height adjustment bracket relative to the mounting bracket about a corresponding pivot point, thereby causing vertical movement of the guide tube and enabling vertical adjustment of the steering column (i.e., adjusting the height of the steering column). In existing height adjustment mechanisms for steering columns, the height adjustment bracket functions mechanically similarly to a toggle link (i.e., a right-angled rod) and is mounted very close to the guide tube. Due to the spatial positioning of the height adjustment bracket, the wall thickness of the area of ​​the guide tube adjacent to the height adjustment bracket needs to be significantly reduced. The guide tube is typically made of aluminum, with the aluminum thickness reduced to 0.5-1 mm. From a manufacturing and structural perspective, this makes the guide tube unsuitable for die casting.

[0004] Therefore, improvements are needed to the existing height adjustment mechanism for the steering column in order to at least partially address the problems existing in the prior art. Utility Model Content

[0005] To address the aforementioned problems, one or more embodiments of this utility model aim to provide a height adjustment mechanism for a steering column and a steering column assembly including the height adjustment mechanism, enabling the guide cylinder to be die-cast from raw materials, retaining the height adjustment function of the height adjustment bracket, improving the packaging space, avoiding structural conflicts, and enhancing the manufacturability and mechanical robustness of the guide cylinder.

[0006] According to one aspect of the present invention, a height adjustment mechanism for a steering column is provided. The height adjustment mechanism includes: a height adjustment bracket, a mounting bracket, a guide cylinder, and a height adjustment actuator. The height adjustment bracket includes a first side plate, which includes a first portion, a second portion, and an intermediate portion connecting the first portion and the second portion. The first portion of the first side plate of the height adjustment bracket is pivotally connected to the mounting bracket at a first pivot position, and the first portion of the first side plate of the height adjustment bracket is pivotally connected to the guide cylinder at a second pivot position. The second portion of the first side plate of the height adjustment bracket is pivotally connected to the height adjustment actuator. The height adjustment actuator is fixed to one side of the guide cylinder and configured to drive the height adjustment bracket to move relative to the mounting bracket about the first pivot position. Adjacent first portions extend offset relative to the intermediate portion in a first direction, and adjacent second portions extend offset relative to the intermediate portion in a second direction opposite to the first direction. The intermediate portion protrudes away from the guide cylinder relative to both the first and second portions to provide accommodating space for the guide cylinder.

[0007] In the height adjustment mechanism for the steering column described above, the first direction and the second direction are orthogonal to the longitudinal axis of the guide cylinder.

[0008] In the height adjustment mechanism for the steering column described above, the intermediate portion includes a first transition portion, a second transition portion, and a straight portion located between the first transition portion and the second transition portion. The first transition portion connects the straight portion to the first portion and extends in a generally inclined manner, and the second transition portion connects the straight portion to the second portion and extends in a generally straight manner.

[0009] In the height adjustment mechanism for the steering column described above, the offset distance of the middle portion relative to the first portion is smaller than the offset distance of the middle portion relative to the second portion.

[0010] In the height adjustment mechanism for the steering column described above, the height adjustment bracket further includes a second side plate and a top plate connecting the first side plate and the second side plate. The second side plate is pivotally connected to the mounting bracket and pivotally connected to the guide cylinder.

[0011] In the height adjustment mechanism for the steering column described above, the first portion of the first side plate of the height adjustment bracket is pivotally connected to the mounting bracket by a first bolt, the first bolt passing sequentially through the mounting bracket and the first portion of the first side plate of the height adjustment bracket.

[0012] In the height adjustment mechanism for the steering column described above, the first portion of the first side plate of the height adjustment bracket is pivotally connected to the guide cylinder by a second bolt, the second bolt passing sequentially through the first portion of the first side plate of the height adjustment bracket and the guide cylinder.

[0013] In the height adjustment mechanism for the steering column described above, the height adjustment mechanism further includes a connecting bracket, which includes a first end and a second end opposite to the first end. The first end of the connecting bracket is fixed to the first side plate of the height adjustment bracket, and the second end of the connecting bracket is pivotally connected to the height adjustment driver.

[0014] In the height adjustment mechanism for the steering column described above, the height adjustment driver includes a motor, a screw connected to the output shaft of the motor, and a motor nut threadedly connected to the screw.

[0015] In the height adjustment mechanism for the steering column described above, the motor nut includes: a first nut mounting part and a second nut mounting part. The first nut mounting part is used to insert into the second part of the first side plate of the height adjustment bracket and to have an interference fit with it. The second nut mounting part is used to insert into the second end of the connecting bracket and to have an interference fit with it.

[0016] According to another aspect of the present invention, a steering column assembly is provided. The steering column assembly includes a steering column and a height adjustment mechanism for the steering column according to the above aspect, wherein the guide sleeve is sleeved on the outside of the steering column.

[0017] In the height adjustment mechanism for a steering column of this invention, the height adjustment bracket has a middle portion that protrudes away from the guide cylinder relative to both the first and second portions, providing accommodating space for the guide cylinder and allowing the height adjustment bracket to avoid or bypass structural interference areas with the guide cylinder. In other words, by removing a portion of the height adjustment bracket from the critical area of ​​the guide cylinder, the wall thickness of the guide cylinder can be significantly increased, enabling die casting of the raw material. Simultaneously, since the height adjustment bracket can still be driven by the height adjustment actuator, the adjustment action is retained, and the function of the height adjustment bracket as a height adjustment linkage is also preserved. Furthermore, by changing the geometry of the height adjustment bracket, it can be arranged around the sensitive structural areas of the guide cylinder, thereby improving the encapsulation space and avoiding structural conflicts. In addition, due to the increased design margin of the casting, tolerances and structural performance are better, thus improving the manufacturability and mechanical robustness of the guide cylinder. Attached Figure Description

[0018] The foregoing and other features and characteristics of this application will become clearer from the following detailed description with reference to the accompanying drawings, which are merely illustrative and not necessarily drawn to scale. The same reference numerals are used in the drawings to indicate the same parts, in which:

[0019] Figure 1 This is a perspective view of a steering column assembly according to the present invention, which includes a steering column and a height adjustment mechanism for the steering column.

[0020] Figure 2 This is a partially enlarged view of the steering column assembly according to the present invention, viewed from the side where the first side plate is provided;

[0021] Figure 3 This is a partially enlarged view of the steering column assembly according to the present invention, viewed from the side where the second side plate is provided;

[0022] Figure 4 This is an exploded view of the steering column assembly according to the present invention;

[0023] Figure 5 This is a side view of the steering column assembly according to the present invention;

[0024] Figure 6 This is a perspective view of the height-adjustable bracket according to the present invention; and

[0025] Figure 7 This is a side view of the height adjustment bracket according to the present invention. Detailed Implementation

[0026] The following description, in conjunction with the accompanying drawings, describes the height adjustment mechanism for the steering column of the present invention, as well as the steering column assembly including the steering column and the height adjustment mechanism for the steering column.

[0027] Although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another region, layer, or segment. Unless the context clearly indicates otherwise, terms such as “first,” “second,” and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as a second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0028] Figure 1 This is a perspective view of the steering column assembly 1 according to the present invention. The steering column assembly 1 includes a steering column 60 and a height adjustment mechanism for the steering column 60. Figure 2 This is a partially enlarged view of the steering column assembly 1 according to the present invention, viewed from the side where the first side plate 11 is provided. Figure 3 This is a partially enlarged view of the steering column assembly 1 according to the present invention, viewed from the side where the second side plate 12 is provided. Figure 4 This is an exploded view of the steering column assembly 1 according to the present invention. Figure 5 This is a side view of the steering column assembly 1 according to the present invention. Figure 6 This is a perspective view of the height adjustment bracket 10 according to the present invention. Figure 7 This is a side view of the height adjustment bracket 10 according to the present invention.

[0029] In one aspect of this invention, a height adjustment mechanism for a steering column 60 is provided. See also... Figures 1 to 7 The height adjustment mechanism for the steering column 60 of this utility model includes: a height adjustment bracket 10, a mounting bracket 20, a guide cylinder 30, and a height adjustment driver 40, wherein the mounting bracket 20 is fixed to the mounting part of the vehicle body.

[0030] like Figure 6 and Figure 7 As shown, the height adjustment bracket 10 includes a first side plate 11, a second side plate 12, and a top plate 13 connecting the first side plate 11 and the second side plate 12. The first side plate 11 includes a first part 111, a second part 112, and a middle part 113 connecting the first part 111 and the second part 112.

[0031] like Figure 1 and Figure 2As shown, the first portion 111 of the first side plate 11 of the height adjustment bracket 10 is pivotally connected to the mounting bracket 20 in a first pivot position. Specifically, the first portion 111 of the first side plate 11 of the height adjustment bracket 10 is pivotally connected to the mounting bracket 20 by a first bolt 14, which passes sequentially through the mounting bracket 20 and the first portion 111 of the first side plate 11 of the height adjustment bracket 10. Figure 4 As shown, the mounting bracket 20 includes two mounting bracket side plates 21, each of which is provided with a mounting hole 210. Figure 6 As shown, the first portion 111 of the first side plate 11 of the height adjustment bracket 10 is provided with a first mounting hole 10a. A first bolt 14 passes sequentially through the mounting holes 210 in the corresponding mounting bracket side plate 21 of the mounting bracket 20 and the first mounting holes 10a in the first portion 111 of the first side plate 11 of the height adjustment bracket 10, and is connected to a nut (not shown) but not fully tightened by the nut, thereby allowing the first portion 111 of the first side plate 11 of the height adjustment bracket 10 to move relative to the mounting bracket 20 about a first pivot position (i.e., the central axis of the first bolt 14). Similarly, the second side plate 12 of the height adjustment bracket 10 is also pivotally connected to the mounting bracket 20. Specifically, as... Figure 6 As shown, the second side plate 12 is also provided with a first mounting hole 10a, such as... Figure 3 and Figure 4 As shown, another first bolt 14 passes sequentially through the mounting hole 210 in the corresponding mounting bracket side plate 21 of the mounting bracket 20 and the first mounting hole 10a in the second side plate 12 of the height adjustment bracket 10, and is connected to a nut (not shown) but not fully locked by the nut, thereby allowing the second side plate 12 of the height adjustment bracket 10 to move relative to the mounting bracket 20 about the central axis of the first bolt 14. This arrangement ensures that the first side plate 11 and the second side plate 12 of the height adjustment bracket 10 move synchronously relative to the mounting bracket 20, which helps to improve the accuracy of the height adjustment operation of the height adjustment mechanism.

[0032] like Figure 1 and Figure 2 As shown, the first portion 111 of the first side plate 11 of the height adjustment bracket 10 is pivotally connected to the guide cylinder 30 in a second pivot position. Specifically, the first portion 111 of the first side plate 11 of the height adjustment bracket 10 is pivotally connected to the guide cylinder 30 by a second bolt 15, which passes sequentially through the first portion 111 of the first side plate 11 of the height adjustment bracket 10 and the guide cylinder 30. Figure 6As shown, the first portion 111 of the first side plate 11 of the height adjustment bracket 10 is provided with a second mounting hole 10b. A second bolt 15 passes sequentially through the second mounting hole 10b in the first portion 111 of the first side plate 11 of the height adjustment bracket 10 and a mounting hole (not shown) in the guide cylinder 30, and is connected to a nut (not shown) but not fully locked by the nut. This allows the first portion 111 of the first side plate 11 of the height adjustment bracket 10 to move relative to the guide cylinder 30 about a second pivot position (i.e., the central axis of the second bolt 15) to accommodate rotation during height adjustment. Similarly, the second side plate 12 of the height adjustment bracket 10 is also pivotally connected to the guide cylinder 30. Specifically, as... Figure 6 As shown, the second side plate 12 is also provided with a second mounting hole 10b, such as... Figure 3 and Figure 4 As shown, another second bolt 15 passes sequentially through the second mounting hole 10b in the second side plate 12 and the mounting hole (not shown) in the guide cylinder 30, and is connected to a nut (not shown) but not fully locked by the nut. This allows the second side plate 12 of the height adjustment bracket 10 to move relative to the guide cylinder 30 around the central axis of the second bolt 15 to accommodate rotation during height adjustment. This arrangement ensures that the first side plate 11 and the second side plate 12 of the height adjustment bracket 10 move synchronously relative to the guide cylinder 30, which helps improve the accuracy of the height adjustment operation of the height adjustment mechanism.

[0033] like Figures 1 to 5 As shown, when the height adjustment bracket 10 is installed on the guide cylinder 30, the first side plate 11 and the second side plate 12 of the height adjustment bracket 10 are located on both sides of the guide cylinder 30, and the top plate 13 of the height adjustment bracket 10 is located above the guide cylinder 30.

[0034] like Figure 1 and Figure 2 As shown, the second portion 112 of the first side plate 11 of the height adjustment bracket 10 is pivotally connected to the height adjustment actuator 40, which is fixed to one side of the guide cylinder 30 and configured to drive the height adjustment bracket 10 to move relative to the mounting bracket 20 about a first pivot position (i.e., the central axis of the first bolt 14). Figure 1 and Figure 2 as well as Figure 4 and Figure 5 As shown, the height adjustment mechanism also includes a connecting bracket 50, which includes a first end 51 and a second end 52 opposite to the first end 51. The first end 51 of the connecting bracket 50 is fixed to the first side plate 11 of the height adjustment bracket 10 (e.g., by bolts), specifically to the middle portion 113 of the first side plate 11 of the height adjustment bracket 10. The second end 52 of the connecting bracket 50 is pivotally connected to the height adjustment actuator 40. Specifically, as... Figure 1 , Figure 2 and Figure 4 As shown, the height adjustment driver 40 includes a motor 41, a screw 42 connected to the output shaft of the motor 41, and a motor nut 43 threadedly connected to the screw 42. Figure 4 and Figure 6 As shown, the second part 112 of the first side plate 11 of the height adjustment bracket 10 is provided with a third mounting hole 10c. (As indicated...) Figure 4 As shown, the second end 52 of the connecting bracket 50 has a mounting hole 521. (As indicated...) Figure 1 and Figure 2 as well as Figure 4 and Figure 5 As shown, the motor nut 43 includes a first nut mounting part 431 and a second nut mounting part 432. The first nut mounting part 431 is used to insert into the second part 112 of the first side plate 11 of the height adjustment bracket 10 (specifically, into the third mounting hole 10c in the second part 112) and to have an interference fit with it. The second nut mounting part 432 is used to insert into the second end 52 of the connecting bracket 50 (specifically, into the mounting hole 521 in the second end 52) and to have an interference fit with it.

[0035] like Figure 6 and Figure 7 As shown, in the height adjustment mechanism for the steering column 60 of this utility model, the adjacent first portion 111 extends offset relative to the middle portion 113 in a first direction D1, and the adjacent second portion 112 extends offset relative to the middle portion 113 in a second direction D2 opposite to the first direction D1; the middle portion 113 protrudes away from the guide cylinder 30 relative to the first portion 111 and relative to the second portion 112, to provide accommodating space for the guide cylinder 30. Preferably, the first direction D1 and the second direction D2 are orthogonal to the longitudinal axis of the guide cylinder 30 (i.e., the direction along the longitudinal length of the guide cylinder 30, which is coaxial or parallel to the central longitudinal axis of the steering column 60). The first direction D1 is... Figure 7 The direction shown is vertically upward, while the second direction D2 is... Figure 7 The direction shown is vertically downward. In this invention, by providing a height adjustment bracket 10 of this shape, i.e., the height adjustment bracket 10 has a middle portion 113, which protrudes away from the guide cylinder 30 relative to the first portion 111 and relative to the second portion 112, to provide accommodating space for the guide cylinder 30, the height adjustment bracket 10 can avoid or bypass areas that structurally interfere with the guide cylinder 30 (such as...). Figure 5The region shown is the middle portion 113 of the first side plate 11 adjacent to the height adjustment bracket 10 of the guide cylinder 30. That is, by removing a portion of the height adjustment bracket 10 from the critical area of ​​the guide cylinder 30, the wall thickness of the guide cylinder 30 can be significantly increased, thereby enabling die casting of the raw material; at the same time, since the height adjustment bracket 10 can still be driven by the height adjustment driver 40, the adjustment action is retained, and the function of the height adjustment bracket 10 as a height adjustment linkage is also retained; moreover, by changing the geometry of the height adjustment bracket 10, the height adjustment bracket 10 can be arranged around the sensitive structural area of ​​the guide cylinder 30, thereby improving the packaging space and avoiding structural conflicts; in addition, due to the increased casting design margin, the tolerances and structural performance are better, thereby improving the manufacturability and mechanical robustness of the guide cylinder 30.

[0036] In some implementations, such as Figure 6 and Figure 7 As shown, the intermediate portion 113 includes a first transition portion 1131, a second transition portion 1132, and a straight portion 1133 located between the first transition portion 1131 and the second transition portion 1132. The straight portion 1133 extends in a straight manner; the first transition portion 1131 connects the straight portion 1133 to the first portion 111 to achieve a transition between the first portion 111 and the straight portion 1133, and the first transition portion 1131 extends in a generally inclined manner; the second transition portion 1132 connects the straight portion 1133 to the second portion 112 to achieve a transition between the second portion 112 and the straight portion 1133, and the second transition portion 1132 extends in a generally straight manner. Since the height adjustment bracket 10 extends at the first transition portion 1131 in a generally inclined manner, the height adjustment bracket 10 can gradually avoid or bypass the structural interference area with the guide cylinder 30 at the first transition portion 1131. Furthermore, since the height adjustment bracket 10 extends directly and generally straight at the second transition portion 1132, installation space is provided for the height adjustment driver 40, thereby making the structure of the entire height adjustment mechanism more compact and further improving the packaging space.

[0037] In some implementations, such as Figure 7As shown, the offset distance S1 of the middle portion 113 relative to the first portion 111 (that is, the distance between the surface of the middle portion 113 furthest from the guide cylinder 30 and the surface of the first portion 111 furthest from the guide cylinder 30, specifically the distance between the surface of the straight portion 1133 furthest from the guide cylinder 30 and the surface of the first portion 111 furthest from the guide cylinder 30) is smaller than the offset distance S2 of the middle portion 113 relative to the second portion 112 (that is, the distance between the surface of the middle portion 113 furthest from the guide cylinder 30 and the surface of the second portion 112 furthest from the guide cylinder 30, specifically the distance between the surface of the straight portion 1133 furthest from the guide cylinder 30 and the surface of the second portion 112 furthest from the guide cylinder 30). Therefore, the middle portion 113 of the height adjustment bracket 10 can slightly avoid or bypass the structural interference area with the guide cylinder 30 near the first portion 111 without excessively increasing the size of the entire height adjustment mechanism along the thickness direction of the height adjustment bracket 10. Furthermore, the offset distance of the middle portion 11 relative to the second portion 112 is relatively large (i.e., the distance between the surface of the middle portion 11 furthest from the guide cylinder 30 and the surface of the second portion 112 furthest from the guide cylinder 30 is relatively large), thereby leaving installation space for the height adjustment driver 40. This makes the structure of the entire height adjustment mechanism more compact and further improves the packaging space.

[0038] In another aspect of this utility model, a steering column assembly 1 is provided, which includes a steering column 60 and the height adjustment mechanism for the steering column 60 described above, such as... Figures 1 to 5 As shown, the guide cylinder 30 is sleeved on the outside of the steering column 60.

[0039] The working principle of the height adjustment mechanism for the steering column 60 of this utility model is described below: In the technical solution of this utility model, the motor 41 of the height adjustment driver 40 drives the screw 42 to rotate, so that the motor nut 43, which is threadedly connected to the screw 42, can move along the axial direction of the screw 42, thereby driving the height adjustment bracket 10 to move relative to the mounting bracket 20 around the first pivot position (i.e., the central axis of the first bolt 14), and then driving the guide cylinder 30 to move vertically (i.e., to move up and down in the vertical direction perpendicular to the longitudinal extension direction (length extension direction) of the height adjustment mechanism), so that the steering column 60 can be vertically adjusted, that is, the height of the steering column 60 can be adjusted.

[0040] Exemplary embodiments of the height adjustment mechanism for the steering column and the steering column assembly according to the present invention have been described in detail herein. However, it should be understood that the present invention is not limited to the specific embodiments described and shown above. Various modifications and variations can be made to the present invention by those skilled in the art without departing from the spirit and scope of the present invention. All such modifications and variations fall within the scope of the present invention. Moreover, all components described herein can be replaced by other technically equivalent components.

Claims

1. A height adjustment mechanism for a steering column, the height adjustment mechanism comprising: The height adjustment bracket (10), mounting bracket (20), guide cylinder (30), and height adjustment driver (40) are provided. The height adjustment bracket (10) includes a first side plate (11), which includes a first part (111), a second part (112), and an intermediate part (113) connecting the first part (111) and the second part (112). The first part (111) of the first side plate (11) of the height adjustment bracket (10) is pivotally connected to the mounting bracket (20) at a first pivot position, and the first part (111) of the first side plate (11) of the height adjustment bracket (10) is pivotally connected to the guide cylinder (30) at a second pivot position. The second part (112) of the first side plate (11) of the height adjustment bracket (10) is pivotally connected to the height adjustment driver (40). The height adjustment actuator (40) is fixed to one side of the guide cylinder (30) and configured to drive the height adjustment bracket (10) to move relative to the mounting bracket (20) about the first pivot position. The first portion (111) of the adjacent arrangement extends offset in a first direction (D1) relative to the middle portion (113), and the second portion (112) of the adjacent arrangement extends offset in a second direction (D2) opposite to the first direction (D1) relative to the middle portion (113); the middle portion (113) protrudes in a direction away from the guide cylinder (30) relative to the first portion (111) and relative to the second portion (112) to provide accommodating space for the guide cylinder (30).

2. The height adjustment mechanism for a steering column according to claim 1, characterized in that, The first direction (D1) and the second direction (D2) are orthogonal to the longitudinal axis of the guide cylinder (30).

3. The height adjustment mechanism for a steering column according to claim 1, characterized in that, The intermediate portion (113) includes a first transition portion (1131), a second transition portion (1132), and a straight portion (1133) located between the first transition portion (1131) and the second transition portion (1132). The first transition portion (1131) connects the straight portion (1133) to the first portion (111) and extends in a generally inclined manner. The second transition portion (1132) connects the straight portion (1133) to the second portion (112) and extends in a generally straight manner.

4. The height adjustment mechanism for a steering column according to claim 1, characterized in that, The offset distance (S1) of the intermediate portion (113) relative to the first portion (111) is smaller than the offset distance (S2) of the intermediate portion (113) relative to the second portion (112).

5. The height adjustment mechanism for a steering column according to claim 1, characterized in that, The height adjustment bracket (10) further includes a second side plate (12) and a top plate (13) connecting the first side plate (11) and the second side plate (12). The second side plate (12) is pivotally connected to the mounting bracket (20) and pivotally connected to the guide cylinder (30).

6. The height adjustment mechanism for a steering column according to any one of claims 1 to 5, characterized in that, The first part (111) of the first side plate (11) of the height adjustment bracket (10) is pivotally connected to the mounting bracket (20) by a first bolt (14), the first bolt (14) passing through the mounting bracket (20) and the first part (111) of the first side plate (11) of the height adjustment bracket (10) in sequence.

7. The height adjustment mechanism for a steering column according to any one of claims 1 to 5, characterized in that, The first part (111) of the first side plate (11) of the height adjustment bracket (10) is pivotally connected to the guide cylinder (30) by a second bolt (15), the second bolt (15) passing through the first part (111) of the first side plate (11) of the height adjustment bracket (10) and the guide cylinder (30) in sequence.

8. The height adjustment mechanism for a steering column according to any one of claims 1 to 5, characterized in that, The height adjustment mechanism further includes a connecting bracket (50), which includes a first end (51) and a second end (52) opposite to the first end (51). The first end (51) of the connecting bracket (50) is fixed to the first side plate (11) of the height adjustment bracket (10), and the second end (52) of the connecting bracket (50) is pivotally connected to the height adjustment driver (40).

9. The height adjustment mechanism for a steering column according to claim 8, characterized in that, The height adjustment driver (40) includes a motor (41), a screw (42) connected to the output shaft of the motor (41), and a motor nut (43) threadedly connected to the screw (42).

10. The height adjustment mechanism for a steering column according to claim 9, characterized in that, The motor nut (43) includes a first nut mounting part (431) and a second nut mounting part (432). The first nut mounting part (431) is used to insert into the second part (112) of the first side plate (11) of the height adjustment bracket (10) and to have an interference fit with it. The second nut mounting part (432) is used to insert into the second end (52) of the connecting bracket (50) and to have an interference fit with it.

11. A steering column assembly (1), characterized in that, The steering column assembly (1) includes a steering column (60) and a height adjustment mechanism for the steering column according to any one of claims 1 to 10, wherein the guide cylinder (30) is sleeved on the outside of the steering column (60).

Images