A driver for steering wheel column adjustment of a vehicle

Abstract

This utility model discloses a driver for adjusting an automotive steering column, comprising a gearbox, a transmission assembly, and a drive assembly. The transmission assembly includes a lead screw rotatably disposed at one end within the gearbox and a transmission component mounted on the portion of the lead screw located within the gearbox. The drive assembly includes a worm gear disposed within the gearbox and meshing with the transmission component, and a drive motor disposed on the side of the gearbox and connected to the worm gear via a main shaft. This driver for adjusting an automotive steering column uses a single drive motor as a power source, is compact in size, and uses only the worm gear and transmission component as power transmission elements. On the one hand, this shortens the power transmission path and improves the response speed of the driver; on the other hand, it helps to reduce the overall size of the driver, thereby achieving miniaturization and weight reduction.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and specifically to a drive for adjusting the steering column of an automobile. Background Technology

[0002] The automotive industry has played a vital role in human production and daily life for over a century. With the development of human society, people's definition of automobiles has also changed significantly. China's automotive industry has gone through a process of joint ventures and cooperation, imitation, and finally, leapfrogging development. Especially in recent years, the development of new energy vehicles has made China's automotive industry shine on the global stage. The rapid rise of new energy vehicles has also forced the entire automotive industry to continuously upgrade the functional configurations of vehicles. Traditional car steering columns are mostly mechanically adjustable, but many cars now have electrically adjustable steering columns, and some even have a welcome function. When the driver enters the car, the steering wheel automatically adjusts to provide more space for the driver to sit down; after the driver is seated, the steering wheel will return to its original position. Behind this series of actions is the steering column actuator.

[0003] The gaps between the spindle and gearbox of traditional motors, as well as between the lead screw and gearbox, cannot be adjusted automatically according to usage needs, and existing drives do not have the function of automatically resetting according to the user's usage habits. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, the purpose of this utility model is to invent a compact actuator for adjusting the steering column of an automobile.

[0005] The present invention aims to achieve the following technical solution:

[0006] A drive for adjusting an automotive steering column, comprising,

[0007] Gearbox;

[0008] A transmission assembly includes a transmission component and a lead screw. One end of the lead screw is rotatably disposed inside the gearbox. The transmission component is installed on the portion of the lead screw disposed inside the gearbox. A lead screw nut, which is connected to the steering column, is installed on the portion of the lead screw disposed outside the gearbox. The lead screw nut is threadedly connected to the lead screw.

[0009] The drive assembly includes a drive motor, a spindle, and a worm gear. The worm gear is disposed inside the gearbox and meshes with the transmission component. The drive motor is disposed on the side of the gearbox, and the power output end of the drive motor is in contact with the gearbox. The spindle is drivenly connected to the power output end of the drive motor, and the end of the spindle penetrates the gearbox wall and is placed inside the gearbox. The portion of the spindle placed inside the gearbox is fixedly connected to the worm gear.

[0010] Furthermore, the transmission component is a helical gear or a turbine, and the module of the helical gear or turbine is less than 1.

[0011] Furthermore, the transmission component is integrally formed with the lead screw.

[0012] Furthermore, the actuator for adjusting the steering column of an automobile also includes an adjustment assembly, which includes an adjustment screw. The gearbox has a mounting hole extending through the gearbox wall on the side away from the drive motor. The end of the main shaft is placed in the mounting hole and rotatably connected to the mounting hole. The worm gear is fixed to the outside of the portion of the main shaft located inside the gearbox. The adjustment screw is installed in the mounting hole and is adapted to move toward the main shaft under the action of an external force until it fits against the end face of the end of the main shaft.

[0013] Furthermore, the adjusting assembly also includes an elastic element disposed inside the gearbox, with one end of the elastic element abutting against the transmission member and the other end abutting against the gearbox wall, so as to adapt the transmission member to abut against the gearbox wall.

[0014] Furthermore, the transmission component includes a sleeve and teeth. The sleeve is fixedly sleeved on the outer side of the portion of the lead screw located inside the gearbox. The teeth are formed on the outer side of the sleeve and near the middle of the sleeve, and the teeth mesh with the transmission component.

[0015] Furthermore, the sleeve surface is uniformly provided with a plurality of oil storage grooves for storing lubricating grease in the radial direction, and the oil storage grooves extend along the length direction of the sleeve.

[0016] Furthermore, the actuator for adjusting the automotive steering column also includes a limiting assembly, which includes a limiting sleeve, a limiting washer, and a retaining ring. The end of the lead screw away from the gearbox is sequentially provided with a limiting washer mounting position and a retaining ring mounting groove. The limiting washer is installed in the limiting washer mounting position, and the retaining ring is installed in the retaining ring mounting groove. The retaining ring is adapted to cooperate with the limiting washer mounting position to hold the limiting washer. The limiting washer is adapted to abut against the lead screw nut when the lead screw nut moves to a preset highest position. The limiting sleeve is sleeved on the outside of the portion of the lead screw located outside the gearbox, with one end of the limiting sleeve abutting against the gearbox and the other end of the limiting sleeve adapted to abut against the lead screw nut when the lead screw nut moves to a preset lowest position, thereby restricting the lead screw nut from continuing to move downwards along the axial direction of the lead screw.

[0017] Furthermore, the driver for adjusting the steering column of an automobile also includes a positioning assembly, which includes a positioning post disposed on the contact surface between the motor and the gearbox, a plurality of positioning arc blocks and a plurality of positioning grooves, and a plurality of arc-shaped bosses, a plurality of positioning bosses and a plurality of circumferential positioning ribs disposed on the contact surface between the gearbox and the motor. The plurality of positioning arc blocks are evenly arranged along the radial direction of the motor, the positioning grooves are disposed between adjacent positioning arc blocks, and the positioning post is disposed on the outside of the connection part between the main shaft and the motor and is coaxially disposed with the main shaft.

[0018] The arc-shaped bosses are provided one-to-one with the positioning arc blocks, and the arc-shaped bosses form an arc-shaped surface that adapts to the outer side of the positioning arc blocks. The arc-shaped surface is adapted to fit with the outer side of the positioning arc blocks when the motor and the gearbox are attached and fixed. The positioning bosses are provided one-to-one with the positioning grooves. The positioning bosses are adapted to insert into the positioning grooves when the motor and the gearbox are attached and fixed. The contact surface between the gearbox and the motor is provided with a positioning hole corresponding to the position of the main shaft. One end of the main shaft passes through the positioning hole and is placed inside the gearbox. The positioning post is adapted to be inserted into the positioning hole when the motor and the gearbox are attached and fixed. A plurality of circumferential positioning ribs are evenly arranged in the positioning hole along the radial direction and abut against the outer side of the positioning post.

[0019] Furthermore, the drive motor integrates a Hall circuit board.

[0020] Beneficial effects:

[0021] This invention uses a single drive motor as the power source, resulting in a compact size. Furthermore, it employs only a worm gear and transmission components as the power transmission elements, which shortens the power transmission path, improves the response speed of the driver, and helps reduce the overall size of the driver, thereby achieving miniaturization and weight reduction. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a drive unit for adjusting the steering column of an automobile according to the present invention;

[0023] Figure 2 This is a cross-sectional view along the lead screw axis of a driver for adjusting an automotive steering column according to the present invention.

[0024] Figure 3 This is a cross-sectional view of the driver for adjusting the steering column of an automobile according to the present invention, along the center line of the drive motor.

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is an exploded view of a drive unit for adjusting a car steering column according to the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of a drive screw for adjusting an automotive steering column according to the present invention;

[0028] Figure 7 This is a schematic diagram of the drive assembly for adjusting the steering column of an automobile according to the present invention.

[0029] Figure 8 This is a schematic diagram of the structure of a drive gearbox for adjusting the steering column of an automobile according to the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of a drive screw nut for adjusting the steering column of an automobile according to the present invention.

[0031] Figure label:

[0032] 10. Gearbox; 101. Mounting hole; 102. Positioning hole; 20. Transmission assembly; 201. Transmission component; 2011. Sleeve; 2012. Gear; 2013. Oil reservoir; 202. Lead screw; 2021. Limiting washer mounting position; 2022. Snap ring mounting slot; 203. Lead screw nut; 30. Drive assembly; 301. Drive motor; 302. Spindle; 303. Worm gear; 40. Adjustment assembly; 401. Adjusting screw; 402. Elastic element; 50. Limiting assembly; 501. Limiting bushing; 502. Limiting washer; 503. Snap ring; 60. Positioning assembly; 601. Positioning pin; 602. Positioning arc block; 603. Positioning groove; 604. Arc-shaped boss; 605. Positioning boss; 606. Circumferential positioning rib. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0034] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] like Figure 1-9 As shown, a drive for adjusting a car steering column includes,

[0038] Gearbox 10;

[0039] The transmission assembly 20 includes a transmission component 201 and a lead screw 202. One end of the lead screw 202 is rotatably disposed inside the gearbox 10. The transmission component 201 is installed on the portion of the lead screw 202 disposed inside the gearbox 10. A lead screw nut 203, which is connected to the steering column, is installed on the portion of the lead screw 202 disposed outside the gearbox 10. The lead screw nut 203 is threadedly connected to the lead screw 202.

[0040] The drive assembly 30 includes a drive motor 301, a spindle 302, and a worm gear 303. The worm gear 303 is disposed inside the gearbox 10 and is connected to the transmission component 201. The drive motor 301 is disposed on the side of the gearbox 10, and the power output end of the drive motor 301 is in contact with the gearbox 10. The spindle 302 is connected to the power output end of the drive motor 301, and the end of the spindle 302 penetrates the gearbox wall and is placed inside the gearbox 10. The portion of the spindle 302 placed inside the gearbox 10 is fixedly connected to the worm gear 303.

[0041] This utility model uses a single drive motor 301 as the power source, which is compact in size. In addition, it uses only a worm gear 303 and a transmission component 201 as the power transmission elements, which shortens the power transmission path and improves the response speed of the driver. On the other hand, it helps to reduce the overall size of the driver, so as to achieve miniaturization and weight reduction of the driver.

[0042] Preferably, in this embodiment, the transmission component 201 adopts a helical gear or a turbine, and the module of the helical gear is less than 1, that is, a small module design is adopted to reduce the diameter of the helical gear and further reduce the size of the driver.

[0043] Meanwhile, by integrally forming the transmission component 201 and the lead screw 202, on the one hand, the number of fasteners such as bolts and nuts can be reduced, which facilitates the quick installation of the lead screw 202 and the transmission component 201. On the other hand, while ensuring the connection strength between the transmission component 201 and the lead screw 202, the weight of the transmission component 201 can be reduced, thereby achieving the lightweighting of the driver.

[0044] In addition, to facilitate user adjustment of the spindle speed 302 according to usage needs, the driver also includes an adjustment component 40 in this embodiment. The adjustment component 40 includes an adjustment screw 401. The gearbox 10 has a mounting hole 101 that penetrates the gearbox wall on the side away from the drive motor 301. The end of the spindle 302 is placed in the mounting hole 101 and rotatably connected to the mounting hole 101. The worm gear 303 is fixed to the outside of the part of the spindle 302 that is placed inside the gearbox 10. The adjustment screw 401 is installed in the mounting hole 101 and is adapted to move toward the spindle 302 under the action of external force until it is in contact with the end face of the end of the spindle 302.

[0045] During operation, the user can use a specific tool, such as a hex wrench, to insert into the mounting hole 101 and connect it to the adjusting nut. By rotating the hex wrench, the adjusting nut is driven to move axially along the mounting hole 101 to tighten or loosen the spindle 302, thereby adjusting the friction between the spindle 302 and the adjusting nut to control the spindle speed. Specifically, when the spindle 302 requires a higher speed, the adjusting nut is loosened to reduce the friction between the spindle 302 and the adjusting nut; when the spindle 302 requires a lower speed, the adjusting nut is tightened to increase the friction between the spindle 302 and the adjusting nut. The adjusting screw 401 also restricts the axial movement of the spindle 302, preventing it from shifting when the rotation direction changes, thus avoiding impact sounds or other noises.

[0046] In addition, to prevent the contact surface between the spindle 302 and the adjusting nut from deforming due to compression, a shim is provided between the spindle 302 and the adjusting nut. This increases the contact surface between the adjusting nut and the spindle 302, thus preventing the pressure exerted by the adjusting nut on the spindle 302 from becoming too concentrated and deforming.

[0047] Preferably, when the lead screw 202 changes its rotation direction during rotation, it will move axially. To prevent the transmission component 201 from colliding with the gearbox 10 wall when the lead screw 202 moves axially, in this embodiment, the adjustment component 40 further includes an elastic element 402. The elastic element 402 is disposed inside the gearbox 10, with one end abutting against the transmission component 201 and the other end abutting against the gearbox 10 wall. This is suitable for pressing the transmission component 201 against the inner wall of the gearbox, thereby preventing the transmission component 201 from moving axially and colliding with the gearbox 10 wall when the lead screw 202 rotates, thus preventing damage. At the same time, it allows the operator to adjust the elastic force applied by the elastic element 402 to the rotating component by adjusting the compression amount of the elastic element 402, so as to avoid excessive axial movement of the transmission component 201 and vibration during the rotation of the lead screw 202.

[0048] Specifically, in this embodiment, the elastic element 402 may be a silicone gasket, a compression spring, a wave-shaped gasket, etc.

[0049] Furthermore, to facilitate the maintenance and replacement of the transmission component 201, in this embodiment, the transmission component 201 can also be configured separately from the lead screw 202. Specifically, the transmission component 201 includes a sleeve 2011 and a toothed portion 2012. The sleeve 2011 is fixedly sleeved on the outer side of the portion of the lead screw 202 located inside the gearbox 10. The toothed portion 2012 is formed on the outer side of the sleeve 2011 and close to the middle of the sleeve 2011. The toothed portion 2012 meshes with the transmission component 201.

[0050] Meanwhile, in order to facilitate the rotation of the transmission component 201 in the gearbox 10, in this embodiment, a plurality of oil storage grooves 2013 for storing lubricating grease are uniformly arranged on the surface of the sleeve 2011 in the radial direction. The oil storage grooves 2013 extend along the length direction of the sleeve 2011, and the lubricating oil can improve the rotation effect of the transmission component 201 in the gearbox 10.

[0051] Preferably, to prevent the lead screw nut 203 from separating from the lead screw 202 during use, the driver further includes a limiting component 50 in this embodiment. The limiting component 50 includes a limiting bushing 501, a limiting washer 502, and a retaining ring 503. A limiting washer mounting position 2021 and a retaining ring mounting groove 2022 are sequentially provided at the end of the lead screw 202 away from the gearbox 10. The limiting washer 502 is installed in the limiting washer mounting position 2021, and the retaining ring 503 is installed in the retaining ring mounting groove 2022. The retaining ring 503 is adapted to cooperate with the limiting washer mounting position 2021 to hold the limiting washer 502. The limiting washer 502 is adapted to... When the screw reaches the preset highest position, it abuts against the lead screw nut 203. The limiting sleeve 501 is sleeved on the outside of the portion of the lead screw 202 located outside the gearbox 10, and one end of the limiting sleeve 501 abuts against the gearbox 10. The other end of the limiting sleeve 501 is adapted to abut against the lead screw nut 203 when the lead screw nut 203 moves to the preset lowest position, so as to restrict the lead screw nut 203 from continuing to move downward along the axial direction of the lead screw 202. With this arrangement, the limiting washer 502 and the limiting sleeve 501 can block the lead screw nut 203 from the upper and lower ends of the lead screw 202, thereby preventing the lead screw nut 203 from separating from the lead screw 202 during operation.

[0052] In addition, to facilitate the installation and positioning of the motor and gearbox 10, the driver also includes a positioning component 60 in this embodiment. The positioning component 60 includes a positioning post 601, a plurality of positioning arc blocks 602 and a plurality of positioning grooves 603 disposed on the contact surface between the motor and the gearbox 10, and a plurality of arc-shaped bosses 604, a plurality of positioning bosses 605 and a plurality of circumferential positioning ribs 606 disposed on the contact surface between the gearbox 10 and the motor. The plurality of positioning arc blocks 602 are evenly arranged along the radial direction of the motor. The positioning grooves 603 are disposed between adjacent positioning arc blocks 602. The positioning post 601 is disposed on the outside of the connection part between the main shaft 302 and the motor and is coaxially disposed with the main shaft 302.

[0053] The arc-shaped boss 604 is provided in a one-to-one correspondence with the positioning arc block 602, and the arc-shaped boss 604 forms an arc-shaped surface that adapts to the outer side of the positioning arc block 602. The arc-shaped surface is adapted to fit with the outer side of the positioning arc block 602 when the motor and the gearbox 10 are attached and fixed. The positioning boss 605 is provided in a one-to-one correspondence with the positioning groove 603. The positioning boss 605 is adapted to be inserted into the positioning groove 603 when the motor and the gearbox 10 are attached and fixed. The contact surface between the gearbox 10 and the motor is provided with a positioning hole 102 at the position corresponding to the position of the main shaft 302. One end of the main shaft 302 passes through the positioning hole 102 and is placed inside the gearbox 10. The positioning post 601 is adapted to be inserted into the positioning hole 102 when the motor and the gearbox 10 are attached and fixed. A plurality of circumferential positioning ribs 606 are evenly arranged in the positioning hole 102 in the radial direction and abut against the outer side of the positioning post 601.

[0054] The above settings are used to achieve multiple positioning of the motor and gearbox 10, so as to effectively avoid installation errors between the motor and gearbox 10 during the installation process.

[0055] In addition, in order to enable the steering wheel to automatically reset according to the preset position, in this embodiment, the drive motor 301 integrates a Hall circuit board. The Hall circuit board can memorize the working position of the motor so that when working, the motor can control the lead screw nut 203 to move to the preset position under the operation of the Hall circuit board, thereby causing the steering wheel, which is connected to the lead screw nut 203, to move to the preset position for reset.

[0056] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A drive for adjusting an automotive steering column, characterized in that: include, Gearbox; A transmission assembly includes a transmission component and a lead screw. One end of the lead screw is rotatably disposed inside the gearbox. The transmission component is installed on the portion of the lead screw disposed inside the gearbox. A lead screw nut, which is connected to the steering column, is installed on the portion of the lead screw disposed outside the gearbox. The lead screw nut is threadedly connected to the lead screw. The drive assembly includes a drive motor, a spindle, and a worm gear. The worm gear is disposed inside the gearbox and meshes with the transmission component. The drive motor is disposed on the side of the gearbox, and the power output end of the drive motor is in contact with the gearbox. The spindle is drivenly connected to the power output end of the drive motor, and the end of the spindle penetrates the gearbox wall and is placed inside the gearbox. The portion of the spindle placed inside the gearbox is fixedly connected to the worm gear.

2. The actuator for adjusting an automotive steering column according to claim 1, characterized in that: The transmission component is a helical gear or a turbine, and the module of the helical gear or turbine is less than 1.

3. The actuator for adjusting an automotive steering column according to claim 1 or 2, characterized in that: The transmission component is integrally formed with the lead screw.

4. The actuator for adjusting an automotive steering column according to claim 1, characterized in that: It also includes an adjustment assembly, which includes an adjustment screw. The gearbox has a mounting hole that penetrates the gearbox wall on the side away from the drive motor. The end of the spindle is placed in the mounting hole and rotatably connected to the mounting hole. The worm gear is fixed to the outside of the part of the spindle that is located inside the gearbox. The adjustment screw is installed in the mounting hole and is adapted to move toward the spindle under the action of external force until it is in contact with the end face of the end of the spindle.

5. The actuator for adjusting an automotive steering column according to claim 4, characterized in that: The adjustment assembly further includes an elastic element disposed inside the gearbox, with one end of the elastic element abutting against the transmission member and the other end abutting against the gearbox wall, so as to adapt the transmission member to abut against the gearbox wall.

6. The actuator for adjusting an automotive steering column according to claim 1 or 2, characterized in that: The transmission component includes a sleeve and teeth. The sleeve is fixedly sleeved on the outer side of the portion of the lead screw located inside the gearbox. The teeth are formed on the outer side of the sleeve and near the middle of the sleeve, and the teeth mesh with the transmission component.

7. The actuator for adjusting an automotive steering column according to claim 6, characterized in that: The sleeve surface is uniformly provided with a plurality of oil storage grooves for storing lubricating grease in the radial direction, and the oil storage grooves extend along the length direction of the sleeve.

8. The actuator for adjusting an automotive steering column according to claim 1, characterized in that: It also includes a limiting component, which includes a limiting bushing, a limiting washer, and a retaining ring. A limiting washer mounting position and a retaining ring mounting groove are sequentially provided at the end of the lead screw away from the gearbox. The limiting washer is installed in the limiting washer mounting position, and the retaining ring is installed in the retaining ring mounting groove. The retaining ring is adapted to cooperate with the limiting washer mounting position to hold the limiting washer. The limiting washer is adapted to abut against the lead screw nut when the lead screw nut moves to a preset highest position. The limiting bushing is sleeved on the outside of the portion of the lead screw located outside the gearbox, with one end of the limiting bushing abutting against the gearbox and the other end of the limiting bushing adapted to abut against the lead screw nut when the lead screw nut moves to a preset lowest position, thereby restricting the lead screw nut from continuing to move downwards along the axial direction of the lead screw.

9. The actuator for adjusting an automotive steering column according to claim 1, characterized in that: It also includes a positioning component, which includes a positioning post, a plurality of positioning arc blocks and a plurality of positioning grooves disposed on the contact surface between the motor and the gearbox, and a plurality of arc-shaped bosses, a plurality of positioning bosses and a plurality of circumferential positioning ribs disposed on the contact surface between the gearbox and the motor. The plurality of positioning arc blocks are evenly arranged along the radial direction of the motor. The positioning grooves are disposed between adjacent positioning arc blocks. The positioning post is disposed on the outside of the connection part between the main shaft and the motor and is coaxially disposed with the main shaft. The arc-shaped bosses are provided one-to-one with the positioning arc blocks, and the arc-shaped bosses form an arc-shaped surface that adapts to the outer side of the positioning arc blocks. The arc-shaped surface is adapted to fit with the outer side of the positioning arc blocks when the motor and the gearbox are fitted and fixed. The positioning bosses are provided one-to-one with the positioning grooves. The positioning bosses are adapted to insert into the positioning grooves when the motor and the gearbox are fitted and fixed. The contact surface between the gearbox and the motor is provided with a positioning hole corresponding to the position of the main shaft. One end of the main shaft passes through the positioning hole and is placed inside the gearbox. The positioning post is adapted to be inserted into the positioning hole when the motor and the gearbox are fitted and fixed. A plurality of circumferential positioning ribs are evenly arranged in the positioning hole along the radial direction and abut against the outer side of the positioning post.

10. The actuator for adjusting an automotive steering column according to claim 1, characterized in that: The drive motor integrates a Hall circuit board.

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