Steering column assembly and vehicle

Abstract

The utility model discloses a steering tubular column assembly and a vehicle. The steering tubular column assembly comprises a steering tubular column and a steering column, a steering shaft; the nut is in limiting fit with the steering shaft in the circumferential direction of the steering shaft and can move in the axial direction of the steering shaft; a threaded section is arranged on the periphery of the lead screw, and the threaded section is matched with the nut; the first limiting piece is fixed to the axial end of the lead screw, and when the nut is located at the first position relative to the lead screw, the first limiting piece is in axial limiting fit with the axial end of the nut; and the second limiting piece is fixed to the other axial end of the lead screw, the second limiting piece is connected with the steering column, and when the nut is located at the second position relative to the lead screw, the second limiting piece is in axial limiting fit with the other axial end of the nut. Therefore, by arranging the steering column assembly, the number of turns of rotation of the steering shaft can be limited, so that the angle sensor and the clock spring are protected, and the steering column assembly is simple and reliable in structure, low in cost and small in size.

Description

Technical Field

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

[0002] The steering system is one of the important systems of an automobile chassis. The function of the steering system is to convert the torque exerted by the driver on the steering wheel into the movement of the wheels through components such as the steering column and the intermediate shaft, so as to achieve the purpose of vehicle steering. As an important component of the steering system and an element connecting the steering wheel and the steering gear, the main function of the steering column is to transmit the steering wheel torque to the steering gear through the intermediate transmission shaft. With the development of steering technology, the steering system has developed in the direction of mechanical steering, hydraulic steering, electro-hydraulic, electric power steering, and steer-by-wire.

[0003] In the related art, compared with other steering methods, steer-by-wire cancels the mechanical connection in the traditional steering system. Only electrical signals are transmitted between the steering column and the steer-by-wire steering gear to achieve information interaction between the upper and lower structures. Therefore, the hard limit of the rack stroke of the steer-by-wire steering system steering gear cannot meet the purpose of mechanically hard-limiting the number of turns of the steering wheel. There are many physical buttons on the steering wheel in the whole vehicle. Currently, a clock spring needs to be added between the steering column and the steering wheel to solve the power supply and communication requirements. However, the clock spring has a limit on the number of turns. After exceeding the number of turns, the clock spring will be damaged, resulting in the failure of the steering wheel buttons. Moreover, the angle sensor also has requirements for the angle range limit. Therefore, the steering column cannot be rotated arbitrarily. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a steering column assembly, which can limit the number of turns of the rotation of the steering shaft, so as to achieve the protection effect on the angle sensor and the clock spring.

[0005] The utility model further provides a vehicle.

[0006] The steering column assembly according to the first aspect of the present utility model includes: a steering column; a steering shaft disposed within the steering column, with an installation groove provided at one end of the steering shaft; a nut disposed within the installation groove, the nut being in circumferential limit cooperation with the steering shaft and axially movable along the steering shaft; a lead screw having a threaded section on its outer periphery, the threaded section cooperating with the nut; a first limiting member fixed to one axial end of the lead screw and located within the installation groove, when the nut is in a first position relative to the lead screw, the first limiting member is in axial limit cooperation with one axial end of the nut; a second limiting member fixed to the other axial end of the lead screw, the second limiting member being connected to the steering column, when the nut is in a second position relative to the lead screw, the second limiting member is in axial limit cooperation with the other axial end of the nut.

[0007] In the above technical solution, when the steering wheel rotates (which can be a forward rotation), the steering wheel will control the rotation of the steering shaft, and the steering shaft will drive the nut to rotate synchronously. The nut rotates relative to the threaded section on the lead screw. Since the lead screw is circumferentially fixed, the nut converts its rotational motion relative to the lead screw into a linear motion along the axial direction of the lead screw. And when the nut is in the first position relative to the lead screw, at this time, the first limiting member establishes an axial limiting cooperation relationship with one axial end of the nut, that is, the first limiting member restricts the nut from continuing to move linearly along the axial direction of the lead screw with the threaded section on the lead screw, thereby restricting the continuous rotation of the steering shaft in the original rotation direction; when the steering wheel rotates (which can be a reverse rotation), the steering wheel will control the rotation of the steering shaft, and the steering shaft will drive the nut to rotate synchronously. The nut rotates relative to the threaded section on the lead screw. Since the lead screw is circumferentially fixed, the nut converts its rotational motion relative to the lead screw into a linear motion along the axial direction of the lead screw. And when the nut is in the second position relative to the lead screw, at this time, the second limiting member establishes an axial limiting cooperation relationship with the other axial end of the nut, that is, the second limiting member restricts the nut from continuing to move linearly along the axial direction of the lead screw with the threaded section on the lead screw, thereby restricting the continuous rotation of the steering shaft in the original rotation direction. In summary, the first position and the second position jointly define the limit positions where the nut can perform axial linear motion relative to the lead screw. Thus, the final set number of limited turns of the steering wheel can be determined by the pitch and the axial distance between the first position and the second position, and further the protection effect on the angle sensor and the clock spring can be achieved (for example, in a steer-by-wire system, compared with other steering systems, its layout form without an intermediate shaft enables only electrical signal transmission between the steering shaft and the steer-by-wire steering gear to achieve up and down information interaction. There are many physical buttons on the steering wheel in the whole vehicle, and a clock spring is set between the steering wheel and the column to solve the power supply and communication requirements. However, the clock spring has a limit on the number of turns. After exceeding the number of turns, the clock spring will be damaged, resulting in the failure of the steering wheel buttons. Moreover, the angle sensor also has a limit requirement on the angle range. Therefore, the steering shaft cannot rotate arbitrarily. And the embodiments in this case can effectively solve the problem of the number of turns limit of the steering shaft and achieve the protection effect on the angle sensor and the clock spring). In addition, the steering column assembly has a simple and reliable structure, low cost, and small volume, effectively improving its practicability.

[0008] Thus, by setting up this steering column assembly, it can limit the number of turns of the steering shaft, thereby achieving the protection effect on the angle sensor and the clock spring, and it has a simple and reliable structure, low cost, and small volume.

[0009] In some examples of the present utility model, external splines are provided on the outer circumference of the nut, and internal splines are provided on the inner circumference of the steering shaft, and the external splines are in meshing cooperation with the internal splines.

[0010] In some examples of the present utility model, the edge of the first limiting member is located between the inner wall of the mounting groove and the outer wall of the lead screw; and / or the edge of the second limiting member is located between the inner wall of the mounting groove and the outer wall of the lead screw.

[0011] In some examples of the present utility model, the second limiting member includes: a limiting plate fixed to the other axial end of the lead screw; a mounting portion provided on the surface of the limiting plate away from the lead screw, and the mounting portion is connected to the steering column.

[0012] In some examples of the present utility model, the mounting portion is provided at the edge of the steering column. The mounting portion is provided with a first mounting hole, and the outer peripheral surface of the steering column is provided with a second mounting hole. The first mounting hole and the second mounting hole are oppositely arranged and connected by a fastener.

[0013] In some examples of the present utility model, there are a plurality of mounting portions, and the plurality of mounting portions are spaced apart in the circumferential direction of the limiting plate, and the plurality of mounting portions are all connected to the steering column.

[0014] In some examples of the present utility model, a third mounting hole penetrating along the axial direction of the lead screw is formed at the center of the lead screw. A fourth mounting hole is provided at the center of the first limiting member, and a fifth mounting hole is provided at the center of the second limiting member. The third mounting hole and the fourth mounting hole are oppositely arranged and connected by a fastener, and the third mounting hole and the fifth mounting hole are oppositely arranged and connected by a fastener.

[0015] In some examples of the present utility model, the first limiting member is configured as a flat plate.

[0016] In some examples of the present utility model, the axial length of the nut is less than the axial length of the lead screw.

[0017] The vehicle according to the second aspect of the present utility model includes: the above-mentioned steering column assembly, so that the vehicle with the steering column assembly can mechanically limit the number of turns of the steering wheel (by adopting a steer-by-wire system), thereby achieving the protection effect on the angle sensor and the clock spring.

[0018] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is an exploded view of a steering column assembly according to an embodiment of the present utility model;

[0021] Figure 2 is a front view of a steering column assembly according to an embodiment of the present utility model;

[0022] Figure 3 is Figure 2 a cross-sectional view taken along the A-A direction in

[0023] Reference numerals:

[0024] 100, steering column assembly;

[0025] 1, steering column; 11, second mounting hole; 2, steering shaft; 21, mounting groove; 22, internal spline;

[0026] 3, nut; 31, external spline; 4, lead screw; 41, threaded section; 42, third mounting hole;

[0027] 5, first limiting member; 51, fourth mounting hole; 6, second limiting member; 61, limiting plate;

[0028] 62, mounting portion; 621, first mounting hole; 63, fifth mounting hole; 7, fastener. Detailed implementation manners

[0029] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary.

[0030] Next, reference is made to Figures 1-3 describe a steering column assembly 100 according to an embodiment of the present utility model, which can limit the number of rotation turns of the steering shaft 2, thereby achieving a protection effect on the angle sensor and the clock spring.

[0031] Combined with Figures 1-3 as shown, the steering column assembly 100 according to the first aspect embodiment of the present utility model includes a steering column 1, a steering shaft 2, a nut 3, a lead screw 4, a first limiting member 5 and a second limiting member 6.

[0032] Among them, the first limiting member 5 and the second limiting member 6 can limit the axial movement of the nut 3, and the lead screw 4 and the nut 3 can be in transmission cooperation, mainly used to convert rotational motion into linear motion, or vice versa. For example, the lead screw 4 is usually constructed as a cylindrical metal rod with threads, and there is one or more axially extending threads on its outer peripheral surface. The nut 3 is a part used in cooperation with the lead screw 4. When the lead screw 4 rotates, the nut 3 can move axially along the lead screw 4, and when the nut 3 rotates, the lead screw 4 can move axially along the nut 3, thereby realizing the transmission of force and motion between the two. In addition, the steering column 1 is circumferentially fixed, and the steering shaft 2 is fixedly connected to the steering wheel. When the steering wheel rotates, it drives the steering shaft 2 to rotate synchronously.

[0033] Specifically, the steering shaft 2 is arranged inside the steering column 1. One end of the steering shaft 2 is provided with an installation groove 21. The nut 3 is arranged inside the installation groove 21. The nut 3 and the steering shaft 2 are circumferentially limited and matched on the steering shaft 2, and the nut 3 is axially movable on the steering shaft 2. The outer periphery of the lead screw 4 is provided with a threaded section 41, and the threaded section 41 is matched with the nut 3. The first limiting member 5 is fixed to one axial end of the lead screw 4, and the first limiting member 5 is located inside the installation groove 21. When the nut 3 is in the first position relative to the lead screw 4, the first limiting member 5 and one axial end of the nut 3 are axially limited and matched. The second limiting member 6 is fixed to the other axial end of the lead screw 4, and the second limiting member 6 is connected to the steering column 1. When the nut 3 is in the second position relative to the lead screw 4, the second limiting member 6 and the other axial end of the nut 3 are axially limited and matched.

[0034] Specifically, the steering column 1 is sleeved on the steering shaft 2. One axial end of the steering shaft 2 forms an installation groove 21, which is convenient for installing the nut 3 inside the steering shaft 2. The nut 3 is also circumferentially limited and matched with the steering shaft 2, so that the steering shaft 2 can smoothly transmit torque and power to the nut 3, thereby driving the nut 3 to rotate synchronously. Among them, the nut 3 is sleeved on the outer periphery of the lead screw 4. The outer periphery of the lead screw 4 forms a threaded section 41 in the axial direction. The threaded section 41 can be matched with the internal threads of the nut 3, so as to ensure the connection tightness between the two on the one hand and the torque transmission effect between the two on the other hand.

[0035] For example, when the steering wheel is rotated, the steering wheel will drive the steering shaft 2 to rotate synchronously. At the same time, the steering shaft 2 will drive the nut 3 sleeved on its inner circumference to rotate synchronously. Moreover, while the nut 3 is performing a circumferential rotation action (that is, at this time the lead screw 4 is forced to be fixed, and the nut 3 moves linearly along the axis of the lead screw 4, realizing the conversion from rotational motion to linear motion), it can also move linearly along the axis of the steering shaft 2.

[0036] Further, along the axial direction of the lead screw 4, a first limiting member 5 and a second limiting member 6 are respectively and fixedly connected to opposite ends of the lead screw 4. The second limiting member 6 is fixedly connected to the steering column 1. In this way, the first limiting member 5, the lead screw 4, the second limiting member 6 and the steering column 1 can be connected as a whole, so as to achieve the effect of restricting the circumferential rotation of the lead screw 4. The nut 3 is movably connected to the lead screw 4, so that an adjustment interval for the axial linear movement of the nut 3 relative to the lead screw 4 is defined between the first limiting member 5 and the second limiting member 6.

[0037] For example, when the steering wheel rotates (it can be a forward rotation), the steering wheel will drive the steering shaft 2 to rotate, and the steering shaft 2 will then drive the nut 3 to rotate synchronously. The nut 3 rotates relative to the threaded section 41 of the lead screw 4. Since the lead screw 4 is circumferentially fixed, the nut 3 converts its rotational movement relative to the lead screw 4 into a linear movement along the axial direction of the lead screw 4. And when the nut 3 is in the first position relative to the lead screw 4, an axial limiting cooperation relationship is established between the first limiting member 5 and one axial end of the nut 3, that is, the first limiting member 5 restricts the nut 3 from continuing to move linearly along the axial direction of the lead screw 4 with the threaded section 41 of the lead screw 4, thereby restricting the continued rotation of the steering shaft 2 in the original rotation direction.

[0038] Another example, when the steering wheel rotates (it can be a reverse rotation), the steering wheel will drive the steering shaft 2 to rotate, and the steering shaft 2 will then drive the nut 3 to rotate synchronously. The nut 3 rotates relative to the threaded section 41 of the lead screw 4. Since the lead screw 4 is circumferentially fixed, the nut 3 converts its rotational movement relative to the lead screw 4 into a linear movement along the axial direction of the lead screw 4. And when the nut 3 is in the second position relative to the lead screw 4, an axial limiting cooperation relationship is established between the second limiting member 6 and the other axial end of the nut 3, that is, the second limiting member 6 restricts the nut 3 from continuing to move linearly along the axial direction of the lead screw 4 with the threaded section 41 of the lead screw 4, thereby restricting the continued rotation of the steering shaft 2 in the original rotation direction.

[0039] In summary, the first position and the second position jointly define the limit positions where the nut 3 can axially move linearly relative to the lead screw 4. Thus, the finally set number of turns of the steering wheel limit can be determined by the pitch and the axial distance between the first position and the second position, thereby achieving the protection effect on the angle sensor and the clock spring (for example, in a steer-by-wire system, compared with other steering systems, its layout form without an intermediate shaft enables only electrical signal transmission between the steering shaft and the steer-by-wire steering gear to achieve up and down information interaction. There are many physical buttons on the steering wheel in the whole vehicle, and a clock spring is arranged between the steering wheel and the column to solve the power supply and communication requirements. However, the clock spring has a limit on the number of turns. After exceeding the number of turns, the clock spring will be damaged, resulting in the failure of the steering wheel buttons. Moreover, the angle sensor also has a limit requirement on the angle range. Therefore, the steering shaft cannot rotate arbitrarily. The embodiments in this case can effectively solve the problem of the number of turns limit of the steering shaft and achieve the protection effect on the angle sensor and the clock spring). In addition, the steering column assembly 100 has a simple and reliable structure, low cost, and small volume, effectively improving its practicability.

[0040] Thus, by providing the steering column assembly 100, it can limit the number of turns of the steering shaft 2, thereby achieving the protection effect on the angle sensor and the clock spring, and it has a simple and reliable structure, low cost, and small volume.

[0041] According to some alternative embodiments of the present invention, in combination with Figure 1 and Figure 3 as shown, an external spline 31 is provided on the outer periphery of the nut 3, and an internal spline 22 is provided on the inner periphery of the steering shaft 2. The external spline 31 meshes and cooperates with the internal spline 22.

[0042] Specifically, the external spline 31 on the outer periphery of the nut 3 and the internal spline 22 on the inner periphery of the steering shaft 2 are in transmission cooperation with each other. In this way, the steering shaft 2 can smoothly transmit torque and power to the nut 3. Moreover, compared with key connections with a single contact surface such as flat keys, the characteristic of spline cooperation is multi-tooth contact, which can provide greater load-bearing capacity, higher coaxiality, and smoother operation, thereby ensuring the stability and accuracy of the transmission.

[0043] According to some alternative embodiments of the present invention, in combination with Figure 1 and Figure 3 as shown, the edge of the first limiting member 5 is located between the inner wall of the installation groove 21 and the outer wall of the lead screw 4. Arranged in this way, on the one hand, it can prevent the first limiting member 5 from interfering with the normal transmission of the steering shaft 2, and on the other hand, it can also have an axial limiting effect on the nut 3, thereby improving its design rationality.

[0044] Wherein, the first limiting member 5 is fixedly connected to one axial end of the lead screw 4. When the nut 3 moves axially to the first limiting member 5, the first limiting member 5 will block the nut 3 from continuing to move in the original direction of movement trend, thereby restricting the number of turns of the steering shaft 2 rotating continuously in a certain direction.

[0045] Optionally, the edge of the second limiting member 6 is located between the inner wall of the mounting groove 21 and the outer wall of the lead screw 4. With such an arrangement, on the one hand, it can prevent the second limiting member 6 from interfering with the normal transmission of the steering shaft 2, and on the other hand, it can also have an axial limiting effect on the nut 3, thereby improving the rationality of its design.

[0046] According to some alternative embodiments of the present utility model, in combination with Figure 1 and Figure 3 As shown, the second limiting member 6 includes a limiting plate 61 and a mounting portion 62. The limiting plate 61 is fixed to the other axial end of the lead screw 4, and the mounting portion 62 is arranged on the surface of the limiting plate 61 away from the lead screw 4, and the mounting portion 62 is connected to the steering column 1.

[0047] Wherein, the limiting plate 61 of the second limiting member 6 is fixedly connected axially to the other axial end of the lead screw 4. The limiting plate 61 can increase the contact area between the second limiting member 6 and the lead screw 4, thereby facilitating the firm connection of the second limiting member 6 to the lead screw 4. In addition, the mounting portion 62 is bent and connected to the surface of the limiting plate 61 away from the lead screw 4, so that the mounting portion 62 can be closer to the opening of the steering column 1, thereby improving the convenience and efficiency of installation and disassembly, and also facilitating the nut 3 to pre-contact the end face of the limiting plate 61, thereby ensuring the axial limiting effect between the nut 3 and the limiting plate 61.

[0048] Specifically, in combination with Figure 1 and Figure 3 As shown, the mounting portion 62 is arranged at the edge of the steering column 1. The mounting portion 62 is provided with a first mounting hole 621, and the outer peripheral surface of the steering column 1 is provided with a second mounting hole 11. The first mounting hole 621 and the second mounting hole 11 are arranged opposite to each other, and the first mounting hole 621 and the second mounting hole 11 are connected by a fastener 7.

[0049] It can be understood that the fastener 7 sequentially passes through the first mounting hole 621 on the outer peripheral surface of the steering column 1 and the second mounting hole 11 on the mounting portion 62 to tightly fix the second limiting member 6 to the steering column 1, so that the connection firmness and the convenience of installation and disassembly between the two can be improved.

[0050] Furthermore, in combination with Figure 1 and Figure 3As shown, there are multiple mounting parts 62. The multiple mounting parts 62 are arranged at intervals in the circumferential direction of the limit plate 61. The multiple mounting parts 62 are all connected to the steering column 1. Such an arrangement can increase the connection force transmission path between the second limiting member 6 and the steering column 1, thereby improving the force uniformity and connection strength between the two, and further enhancing the connection stability and firmness between the two.

[0051] According to some alternative embodiments of the present invention, in combination with Figure 1 and Figure 3 As shown, a third mounting hole 42 axially penetrating through the center of the lead screw 4 is formed. A fourth mounting hole 51 is provided at the center of the first limiting member 5, and a fifth mounting hole 63 is provided at the center of the second limiting member 6. The third mounting hole 42 and the fourth mounting hole 51 are arranged opposite to each other, and the third mounting hole 42 and the fourth mounting hole 51 are connected by a fastener 7. The third mounting hole 42 and the fifth mounting hole 63 are arranged opposite to each other, and the third mounting hole 42 and the fifth mounting hole 63 are connected by a fastener 7.

[0052] Among them, the fastener 7 axially passes through the third mounting hole 42 of the lead screw 4 and the fourth mounting hole 51 of the first limiting member 5 in sequence to connect the first limiting member 5 and the lead screw 4 into a closely integrated whole. In this way, the connection firmness and disassembly convenience between the two can be improved; the fastener 7 axially passes through the fifth mounting hole 63 of the second limiting member 6, the third mounting hole 42 of the lead screw 4 in sequence to connect the second limiting member 6 and the lead screw 4 into a closely integrated whole. In this way, the connection firmness and disassembly convenience between the two can be improved.

[0053] In addition, the third mounting hole 42 axially penetrates along the central axis of the lead screw 4. The fourth mounting hole 51 and the fifth mounting hole 63 are respectively located at the centers of the first limiting member 5 and the second limiting member 6. Such an arrangement can make the stress distribution more uniform, avoid local stress concentration, thereby enhancing the structural stability; it can also simplify the installation, facilitate alignment, and thus improve the assembly efficiency.

[0054] According to some alternative embodiments of the present invention, in combination with Figure 1 and Figure 3 As shown, the first limiting member 5 is configured in a flat plate shape. Such an arrangement can reduce the manufacturing difficulty, improve the manufacturing efficiency, and thus reduce the manufacturing cost.

[0055] According to some alternative embodiments of the present invention, in combination with Figure 1 and Figure 3 As shown, the axial length of the nut 3 is less than the axial length of the lead screw 4. Such an arrangement can enable the nut 3 to have a certain axial linear movement interval relative to the lead screw 4, thereby allowing the steering shaft 2 to rotate a certain number of turns, and further ensuring the normal steering operation of the vehicle.

[0056] A vehicle according to a second aspect embodiment of the present utility model includes the steering column assembly 100 of the above embodiment. Thus, the vehicle having the steering column assembly 100 can mechanically limit the number of turns of the steering wheel (by adopting a steer-by-wire system), thereby achieving the protection effect on the angle sensor and the clock spring.

[0057] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0058] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0060] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

[0061] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0062] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A steering column assembly, characterized in that: include: Steering column; A steering shaft, the steering shaft is arranged in the steering column, and one end of the steering shaft is provided with a mounting groove; A nut, the nut being arranged in the mounting groove, the nut being matched with the steering shaft at the circumferential upper limit position of the steering shaft and being movable in the axial direction of the steering shaft; A lead screw, wherein a threaded section is disposed on the outer periphery of the lead screw, and the threaded section cooperates with the nut; A first limiting member, the first limiting member is fixed to one axial end of the lead screw and is located in the mounting groove, and when the nut is in a first position relative to the lead screw, the first limiting member is axially limitedly matched with one axial end of the nut; A second limit member, the second limit member is fixed to the other axial end of the screw, the second limit member is connected to the steering column, and when the nut is in a second position relative to the screw, the second limit member cooperates with the other axial end of the nut in axial limiting manner.

2. The steering column assembly according to claim 1, characterized in that: The outer periphery of the nut is provided with an external spline, the inner periphery of the steering shaft is provided with an internal spline, and the external spline is meshed with the internal spline.

3. The steering column assembly according to claim 1, characterized in that: The edge of the first limiting member is located between the inner wall of the mounting groove and the outer wall of the lead screw; and / or The edge of the second limiting member is located between the inner wall of the mounting groove and the outer wall of the lead screw.

4. The steering column assembly according to claim 1, characterized in that: The second limiting member comprises: A limit plate, the limit plate being fixed to the other axial end of the lead screw; The mounting portion is arranged on a side surface of the limiting plate away from the lead screw, and the mounting portion is connected to the steering column.

5. The steering column assembly according to claim 4, characterized in that: The mounting portion is arranged at the edge of the steering column, the mounting portion is provided with a first mounting hole, the outer peripheral surface of the steering column is provided with a second mounting hole, the first mounting hole and the second mounting hole are arranged opposite to each other and connected by a fastener.

6. The steering column assembly according to claim 4, characterized in that: There are a plurality of mounting parts, and the plurality of mounting parts are arranged at intervals in the circumferential direction of the limiting plate, and the plurality of mounting parts are all connected to the steering column.

7. The steering column assembly according to claim 1, characterized in that: A third mounting hole is formed at the center of the lead screw and passes through the lead screw along the axial direction, a fourth mounting hole is provided at the center of the first limit member, a fifth mounting hole is provided at the center of the second limit member, the third mounting hole and the fourth mounting hole are arranged opposite to each other and connected by fasteners, and the third mounting hole and the fifth mounting hole are arranged opposite to each other and connected by fasteners.

8. The steering column assembly according to claim 1, characterized in that: The first limiting member is configured in a flat plate shape.

9. The steering column assembly according to claim 1, characterized in that: The axial length of the nut is smaller than the axial length of the lead screw.

10. A vehicle, characterized in that: include: The steering column assembly according to any one of claims 1 to 9.

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