Steering column structure with large-stroke manual adjusting function

Abstract

The utility model discloses a steering column structure with a large-stroke manual adjusting function, and relates to the technical field of automobile steering columns, the steering column structure comprises a main body structure, an upper support, a first side plate, a second side plate, a column outer sleeve and an adjusting piece, the first side plate is fixedly connected to one side of the bottom of the upper support, and the second side plate is fixedly connected to the other side of the bottom of the upper support; the second side plate is fixedly connected to the other side of the bottom of the upper support, and the tubular column outer sleeve is located between the first side plate and the second side plate. By lengthening the axial sliding rail and additionally arranging the limiting piece, the increase of the axial adjusting stroke and the distinguishing of the adjusting stages are successfully achieved, during daily driving, a driver can utilize short-stroke adjustment to meet common driving requirements, and when a driver needs to enter and exit a driving position, the limiting block can be made to be far away from the adjusting rod through swinging of the limiting support, so that the driver can enter and exit the driving position. Therefore, large-stroke adjustment is achieved, the steering wheel moves for a longer distance towards the front of the vehicle, and convenience of entering and exiting a driving position is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile steering column, especially a steering column structure with long-stroke manual adjustment function. BACKGROUND

[0002] In the steering system of the automobile, the steering column is an important component connecting the steering wheel and the steering gear, and the rationality of its structure and the adjustment performance directly affect the operation comfort and safety of the driver, the technical scheme discloses a steering column structure with long-stroke manual adjustment function, which is mainly composed of a main body structure and a stroke adjustment assembly, the main body structure comprises an upper support, a side plate, a column outer sleeve and an adjusting part and the like, the stroke adjustment assembly is provided with a lengthened axial sliding track and a limiting part and the like, and the long-stroke manual adjustment of the steering column is realized through the cooperation between the components.

[0003] The axial adjustment stroke of the existing manual adjustment steering column is generally short, and such short-stroke adjustment limits the distance of the steering wheel moving to the front direction of the vehicle after axial adjustment, which directly affects the convenience of the driver getting in and out of the driving position, and the driver with a large body size or special needs may feel inconvenient when getting in and out of the driving position due to the limitation of the position of the steering wheel, and the expansion of the interior space of the vehicle is also limited due to the fact that the steering wheel cannot move to the front direction of the vehicle sufficiently, so the demand of the user for a more spacious interior space of the vehicle cannot be met. SUMMARY

[0004] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above and / or existing problems in the steering column structure, the utility model is proposed.

[0006] Therefore, the problem to be solved by the utility model is how to solve the problem that the axial adjustment stroke of the existing manual adjustment steering column is generally short, which affects the convenience of the driver getting in and out of the driving position and limits the expansion of the interior space of the vehicle.

[0007] To solve the above technical problems, the utility model provides the following technical scheme: a steering column structure with long-stroke manual adjustment function, comprising,

[0008] The main body structure comprises an upper support, a first side plate, a second side plate, a tube column outer sleeve and an adjusting piece, one side of the first side plate is fixedly connected to one side of the bottom of the upper support, the second side plate is fixedly connected to the other side of the bottom of the upper support, the tube column outer sleeve is located between the first side plate and the second side plate, and the adjusting piece is arranged on one side of the tube column outer sleeve.

[0009] The stroke adjusting assembly is arranged on one side of the adjusting piece and comprises a lengthening shaft sliding track and a limiting piece, the lengthening shaft sliding track is arranged on both sides of the tube column outer sleeve and is matched with the adjusting piece, and the limiting piece is fixedly connected to the bottom of the tube column outer sleeve and is matched with the adjusting piece.

[0010] As a preferred scheme of the steering column structure with the large-stroke manual adjusting function, the adjusting piece comprises an adjusting handle arranged on one side of the first side plate, one side of the adjusting handle is fixedly connected with a driving cam, one side of the driving cam is provided with a driven cam matched with the driving cam, one side of the driving cam is fixedly connected with an adjusting rod, one side of the adjusting rod penetrates through the driven cam, the first side plate, the lengthening shaft sliding track and the second side plate, and is fixedly connected with a pressing plate.

[0011] As a preferred scheme of the steering column structure with the large-stroke manual adjusting function, one side of the driving cam and the driven cam is fixedly connected with a protruding part, and one side of the driven cam is fixedly connected with the first side plate.

[0012] As a preferred scheme of the steering column structure with the large-stroke manual adjusting function, the adjusting piece further comprises a handle sleeve fixedly connected to the surface of the adjusting handle, and the handle sleeve is located at the end of the adjusting handle.

[0013] As a preferred scheme of the steering column structure with the large-stroke manual adjusting function, the pressing plate is circular and is in contact with the second side plate.

[0014] As a preferred scheme of the steering column structure with the large-stroke manual adjusting function, the limiting piece comprises a limiting support arranged on the bottom of the tube column outer sleeve, and a limiting block is fixedly connected to the top of the limiting support and matched with the adjusting rod.

[0015] As a preferred scheme of the steering column structure with the large-stroke manual adjusting function, the limiting piece further comprises a vertical part fixedly connected to both sides of the limiting support, and one side of the vertical part is respectively in contact with both sides of the tube column outer sleeve.

[0016] As a preferred scheme of the steering column structure with long-stroke manual adjustment function, the vertical part further comprises fixing holes formed on both sides of the outer sleeve pipe, and fixing bolts are arranged on one side of the vertical part.

[0017] As a preferred scheme of the steering column structure with long-stroke manual adjustment function, the vertical part further comprises fixing holes formed on both sides of the outer sleeve pipe, and fixing bolts are arranged on one side of the vertical part.

[0018] As a preferred scheme of the steering column structure with long-stroke manual adjustment function, the vertical part further comprises fixing holes formed on both sides of the outer sleeve pipe, and fixing bolts are arranged on one side of the vertical part.

[0019] The utility model discloses beneficial effect is: through the lengthening axle direction sliding track and the additional limit piece, successfully realized the increase of axle direction adjustment stroke and the division of adjustment stage, when daily driving, the driver can utilize short -stroke adjustment, satisfies general driving demand, the limit block is positioned to the adjusting rod at this time, guarantees the stability of steering column, when needing to enter and exit the driving position, can swing through the limit support, makes the limit block away from the adjusting rod, thereby realizes long -stroke adjustment, lets steering wheel move more distance to the front direction of car, greatly improves the convenience of entering and exiting the driving position, in addition, this structure design can also effectively expand the space in the car, satisfies the demand of user to more spacious driving environment, improves the use experience of user and the competitiveness of product. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for the person skilled in the art comes, under the premise of not paying the creative labor intensity, can also obtain other drawings according to these drawings. Wherein:

[0021] Figure 1 It is the structure diagram of the steering column structure with long-stroke manual adjustment function.

[0022] Figure 2 It is the bottom structure diagram of the steering column structure with long-stroke manual adjustment function.

[0023] Figure 3 It is the adjusting piece split structure diagram of the steering column structure with long-stroke manual adjustment function.

[0024] Figure 4The application discloses a split structure diagram of a limiting piece of a steering column structure with a long-stroke manual adjusting function.

[0025] Figure 5 The application discloses a structure change diagram of a limiting piece of a steering column structure with a long-stroke manual adjusting function.

[0026] In the figure: 100, main body structure; 101, upper support; 102, first side plate; 103, second side plate; 104, column outer sleeve; 105, adjusting piece; 200, stroke adjusting assembly; 201, lengthened shaft sliding track; 202, limiting piece; 105a, adjusting handle; 105b, driving cam; 105c, driven cam; 105d, adjusting rod; 105e, pressing plate; 105f, protruding part; 105g, handle sleeve; 202a, limiting support; 202b, limiting block; 202c, vertical part; 202d, guiding clamping rod; 202e, guiding clamping hole; 202f, supporting spring; 202c-1, fixing hole; 202c-2, fixing bolt. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purpose, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail in combination with the drawings in the specification.

[0028] In the following description, many specific details are set forth in order to provide a thorough understanding of the application, but the application can be practiced by other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the application, therefore, the application is not limited by the specific embodiments disclosed below.

[0029] Secondly, the "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0030] Reference Figures 1-5 The application discloses a steering column structure with a long-stroke manual adjusting function, which comprises a stroke adjusting assembly 200, and the stroke adjusting assembly 200 is used for realizing the increase of the axial adjusting stroke and the distinction of the adjusting stages.

[0031] Specifically, the main body structure 100 includes an upper support 101, a first side plate 102, a second side plate 103, a column sleeve 104, and an adjusting member 105. The first side plate 102 is fixedly connected to one side of the bottom of the upper support 101. The second side plate 103 is fixedly connected to the other side of the bottom of the upper support 101. The column sleeve 104 is located between the first side plate 102 and the second side plate 103. The adjusting member 105 is arranged on one side of the column sleeve 104. And,

[0032] The stroke adjustment assembly 200 is arranged on one side of the adjusting member 105 and includes an elongated axial sliding rail 201 and a limiting member 202. The elongated axial sliding rail 201 is opened on both sides of the column sleeve 104 and cooperates with the adjusting member 105. The limiting member 202 is fixedly connected to the bottom of the column sleeve 104 and cooperates with the adjusting member 105.

[0033] In the main body structure 100, the upper support 101 serves as a basic support component and is connected to the vehicle body and other parts to provide a mounting base for the entire steering column structure. The first side plate 102 and the second side plate 103 are fixedly connected to the bottom of the upper support 101 on both sides, respectively, to form a containing space for installing the column sleeve 104. The column sleeve 104 is located between the first side plate 102 and the second side plate 103 to protect the key components of the internal steering column. The adjusting member 105 is arranged on one side of the column sleeve 104 to control the adjustment operation of the steering column. The main body structure 100 constructs the basic framework of the steering column and provides a stable mounting and support structure for each component.

[0034] In the stroke adjustment assembly 200, the elongated axial sliding rail 201 is opened on both sides of the column sleeve 104 to provide a path for the axial movement of the column sleeve 104. When the adjusting member 105 is operated, the column sleeve 104 can move axially along the elongated axial sliding rail 201. The limiting member 202 is fixedly connected to the bottom of the column sleeve 104 and cooperates with the adjusting member 105. According to different driving needs, the movement of the adjusting rod 105d is limited to distinguish the adjustment stages, realize short-stroke or long-stroke adjustment, and realize the axial long-stroke adjustment of the steering column through the elongated axial sliding rail 201 in the stroke adjustment assembly 200 to meet the diversified needs of different drivers for the position of the steering column. The limiting member 202 is a key component for distinguishing the adjustment stages.

[0035] Specifically, the adjusting member 105 includes an adjusting handle 105a arranged on one side of the first side plate 102, one side of the adjusting handle 105a is fixedly connected with a driving cam 105b, one side of the driving cam 105b is arranged with a driven cam 105c which cooperates with the driving cam 105b, one side of the driving cam 105b is fixedly connected with an adjusting rod 105d, one side of the adjusting rod 105d penetrates the driven cam 105c, the first side plate 102, the elongated axial sliding rail 201 and the second side plate 103, and is fixedly connected with a pressing plate 105e.

[0036] When the driver operates the adjusting handle 105a, the adjusting handle 105a rotates around its fixed point, driving the driving cam 105b fixedly connected thereto to rotate synchronously, the driving cam 105b cooperates with the driven cam 105c, the rotation of the driving cam 105b causes the driven cam 105c to move correspondingly, since one side of the driven cam 105c is fixedly connected with the first side plate 102, when the driving cam 105b rotates, the relative position of the driving cam 105b and the driven cam 105c changes, thereby generating an axial force.

[0037] When the driving cam 105b rotates, the axial force is transmitted through the adjusting rod 105d fixedly connected on one side of the driving cam 105b, the adjusting rod 105d penetrates the driven cam 105c, the first side plate 102, the elongated axial sliding rail 201 and the second side plate 103 in sequence, and is fixedly connected with the pressing plate 105e at the end, as the relative position of the driving cam 105b and the driven cam 105c changes, the adjusting rod 105d moves in the axial direction, driving the pressing plate 105e to move closer to or away from the second side plate 103, when it is necessary to fix the steering column, the pressing plate 105e moves closer to the second side plate 103 and exerts pressure, the outer sleeve tube 104 of the steering column is clamped by the friction force; when it is necessary to adjust the steering column, the pressing plate 105e moves away from the second side plate 103, and the outer sleeve tube 104 of the steering column can slide freely.

[0038] The driver is provided with a convenient operation entrance through the adjusting handle 105a, so that the driver can easily adjust and operate the steering column.

[0039] The adjusting mechanism composed of the driving cam 105b, the driven cam 105c, the adjusting rod 105d and the pressing plate 105e realizes the clamping and loosening control of the outer sleeve tube 104 of the steering column, so that the driver can flexibly adjust the position of the steering column according to the own needs, and lock it firmly after adjustment, ensuring the stability of the steering column during driving.

[0040] Specifically, one side of the driving cam 105b and the driven cam 105c is fixedly connected with a protruding part 105f, one side of the driven cam 105c is fixedly connected with the first side plate 102.

[0041] The protrusions 105f on the driving cam 105b and the driven cam 105c play a key role in the cooperation between the two, and the relative position between the protrusions 105f of the driving cam 105b and the driven cam 105c changes constantly as the driving cam 105b rotates, and since the driven cam 105c is fixed on the first side plate 102, the interaction between the protrusions 105f generates an axial thrust or pull force as the driving cam 105b rotates.

[0042] This axial force is transmitted to the adjusting rod 105d through the driving cam 105b, causing the adjusting rod 105d to move precisely in the axial direction, and when the protrusions 105f are in the protruding or recessed position, the adjusting rod 105d drives the pressing plate 105e to exert appropriate pressure on the second side plate 103, achieving clamping or loosening of the pipe string outer sleeve 104.

[0043] The cooperation between the driving cam 105b and the driven cam 105c is enhanced by the protrusions 105f, and the force transmission effect is improved, so that the rotation of the driving cam 105b can be more effectively converted into the axial movement of the adjusting rod 105d, improving the sensitivity and accuracy of the adjustment.

[0044] Specifically, the adjusting member 105 further comprises a handle sleeve 105g fixedly connected to the surface of the adjusting handle 105a, and the handle sleeve 105g is located at the end of the adjusting handle 105a.

[0045] The handle sleeve 105g is tightly fixed at the end of the adjusting handle 105a, and when the driver needs to adjust the steering column, the hand holds the handle sleeve 105g, which is usually made of materials with good friction and comfortable touch, which can increase the friction between the hand and the adjusting handle 105a, and at the same time provide a soft and comfortable holding experience.

[0046] The driver applies force to the adjusting handle 105a through the handle sleeve 105g, causing the adjusting handle 105a to rotate and in turn driving the driving cam 105b and subsequent components to act, achieving the adjustment operation of the steering column, and in the operation process, the handle sleeve 105g can effectively reduce hand fatigue and improve the comfort and stability of the operation.

[0047] Specifically, the pressing plate 105e is circular and in contact with the second side plate 103.

[0048] When the adjusting rod 105d moves axially, it drives the pressing plate 105e to move together, and due to the circular structure of the pressing plate 105e, it can uniformly contact the surface of the second side plate 103 during movement.

[0049] When the adjusting rod 105d drives the pressing plate 105e to approach the second side plate 103, the pressing plate 105e exerts uniform pressure on the second side plate 103, and firmly clamps the pipe column outer sleeve 104 by the friction therebetween, so as to fix the position of the steering column, and when the adjusting rod 105d drives the pressing plate 105e to move away from the second side plate 103, the clamping force on the pipe column outer sleeve 104 disappears, so that the pipe column outer sleeve 104 can be axially moved along the lengthening axial sliding track 201 freely, and the adjustment of the steering column is realized.

[0050] Specifically, the limiting piece 202 includes a limiting support 202a arranged at the bottom of the pipe column outer sleeve 104, and a limiting block 202b fixedly connected to the top of the limiting support 202a and matched with the adjusting rod 105d.

[0051] The limiting support 202a is stably arranged at the bottom of the pipe column outer sleeve 104, and the limiting block 202b is fixedly connected to the top of the limiting support 202a, in the adjustment process of the steering column, the adjusting rod 105d will move axially along with the adjustment operation, when in the short stroke adjustment mode of daily driving, the adjusting rod 105d will contact with the limiting block 202b after moving to a certain position.

[0052] Since the limiting block 202b is fixed on the limiting support 202a, and the limiting support 202a is relatively fixed with the pipe column outer sleeve 104, when the adjusting rod 105d contacts with the limiting block 202b, the limiting block 202b will prevent the adjusting rod 105d from continuing to move, thereby limiting the axial movement range of the pipe column outer sleeve 104, and realizing the short stroke adjustment, when long stroke adjustment is needed, by operating other components of the limiting piece 202, the limiting block 202b is separated from the adjusting rod 105d, and the adjusting rod 105d can move freely in the lengthening axial sliding track 201.

[0053] The cooperation between the limiting block 202b and the adjusting rod 105d is an important part to realize the division of adjustment stages, in the short stroke adjustment of daily driving, the limiting block 202b effectively limits the adjustment stroke of the steering column, ensures the movement of the steering column within a suitable range, meets the general driving requirements, and guarantees the stability and safety of the position of the steering column during driving, meanwhile, by cooperating with other components, the switching from short stroke adjustment to long stroke adjustment can be realized, and more flexible adjustment options are provided for the driver.

[0054] Specifically, the limiting piece 202 further includes vertical portions 202c fixedly connected to the two sides of the limiting support 202a, and one side of each of the vertical portions 202c is in contact with the two sides of the pipe column outer sleeve 104 respectively.

[0055] The vertical part 202c plays a key role in connecting and positioning during the movement of the limiting support 202a. It contacts the pipe string outer sleeve 104 to ensure the position stability of the limiting support 202a during movement and prevent the limiting support 202a from deviating or shaking.

[0056] Specifically, the vertical part 202c further includes fixing holes 202c-1 opened on both sides of the pipe string outer sleeve 104, and a fixing bolt 202c-2 is arranged through one side of the vertical part 202c and cooperates with the fixing hole 202c-1.

[0057] The fixing holes 202c-1 are respectively opened on both sides of the pipe string outer sleeve 104, the fixing bolt 202c-2 is arranged through the corresponding hole position on the vertical part 202c and cooperates with the fixing hole 202c-1. When installing the limiting support 202a, the fixing bolt 202c-2 is inserted into the hole of the vertical part 202c, then aligned with the fixing hole 202c-1, and the fixing bolt 202c-2 is inserted into the fixing hole 202c-1 and tightened.

[0058] Through this connection mode, the vertical part 202c is firmly connected with the pipe string outer sleeve 104, so that the limiting support 202a and the pipe string outer sleeve 104 form a stable whole. During the adjustment of the steering pipe string, the firm connection can ensure the position fixation of the limiting support 202a, so that it can effectively limit the adjusting rod 105d. It can work normally in both short stroke adjustment mode and long stroke adjustment mode.

[0059] Specifically, the limiting part 202 further includes a guide clamping rod 202d arranged through the bottom of the limiting support 202a, and the bottom of the pipe string outer sleeve 104 is provided with a guide clamping hole 202e which cooperates with the guide clamping rod 202d.

[0060] In the short stroke adjustment mode, the supporting spring 202f applies a force to the limiting support 202a. At this time, the limiting block 202b can accurately limit the adjusting rod 105d to realize short stroke adjustment.

[0061] The guide clamping rod 202d and the guide clamping hole 202e are screw-connected and cooperated. In the normal short stroke adjustment state, the guide clamping rod 202d passes through the bottom of the limiting support 202a and partially extends into the guide clamping hole 202e to stably fix the limiting support 202a at the bottom of the pipe string outer sleeve 104. At this time, the limiting block 202b fixed at the top of the limiting support 202a limits the adjusting rod 105d. When the adjusting rod 105d moves to contact the limiting block 202b during adjustment, the limiting block 202b prevents the adjusting rod 105d from continuing to move, thereby limiting the axial movement range of the pipe string outer sleeve 104 to realize short stroke adjustment.

[0062] Specifically, the surface of the guide clamping rod 202d is sleeved with a supporting spring 202f, the top of the supporting spring 202f is fixedly connected with the limiting support 202a, and the bottom of the supporting spring 202f is fixedly connected with the guide clamping rod 202d.

[0063] When the large stroke adjustment operation is performed by pressing the flange at the tail of the limiting support 202a, the limiting support 202a swings around the fixed bolt 202c-2, and in this process, the supporting spring 202f is compressed to store elastic potential energy. When the adjustment is completed, the pressing on the flange at the tail of the limiting support 202a is released, the supporting spring 202f restores the deformation to release the stored elastic potential energy, and the limiting support 202a is reset.

[0064] In use, when the driver needs to adjust the steering column, the adjustment handle 105a is first operated, the adjustment handle 105a rotates to drive the fixedly connected driving cam 105b to rotate. Since the driving cam 105b cooperates with the driven cam 105c, and the side of the driven cam 105c is fixed on the first side plate 102, when the driving cam 105b rotates, the protrusions 105f of the two cams interact to generate an axial force. This force is transmitted to the adjustment rod 105d through the driving cam 105b. The adjustment rod 105d penetrates through the driven cam 105c, the first side plate 102, the lengthened axial sliding track 201, and the second side plate 103 and is connected with the pressing plate 105e. With the change of the relative position of the driving cam 105b and the driven cam 105c, the adjustment rod 105d moves axially to drive the pressing plate 105e to move close to or away from the second side plate 103, so as to loosen and fix the sleeve pipe 104 of the column.

[0065] In the short stroke adjustment mode in daily driving, the limiting piece 202 plays a role, and the supporting spring 202f is in a specific state to exert a force on the limiting support 202a. At this time, the limiting block 202b fixed at the top of the limiting support 202a limits the adjustment rod 105d. When the adjustment rod 105d moves to contact the limiting block 202b, it cannot continue to move, thereby limiting the axial movement range of the sleeve pipe 104 of the column, and short stroke adjustment is achieved.

[0066] When large stroke adjustment is needed, the driver presses the flange at the tail of the limiting support 202a to make the limiting support 202a swing around the fixed bolt 202c-2. In the swinging process of the limiting support 202a, the guide clamping rod 202d does not rotate out of the guide clamping hole 202e, but acts as a limiting part to limit the amplitude and direction of the swing of the limiting support 202a. With the swing of the limiting support 202a, the limiting block 202b gradually moves away from the adjustment rod 105d. At this time, the adjustment rod 105d is no longer limited by the limiting block 202b and can freely slide in the lengthened axial sliding track 201, thereby achieving large stroke adjustment.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A steering column structure having a large stroke manual adjustment function, characterized by: The utility model relates to a kind of adjustable telescopic pipe column, including, Main body structure (100), including upper support (101), first side plate (102), second side plate (103), pipe column outer sleeve (104) and adjusting part (105), the first side plate (102) is fixedly connected to the one side of upper support (101) bottom, the second side plate (103) is fixedly connected to the other side of upper support (101) bottom, the pipe column outer sleeve (104) is between first side plate (102) and second side plate (103), and adjusting part (105) is arranged in one side of pipe column outer sleeve (104);And, Stroke adjustment assembly (200) is arranged in one side of adjusting part (105), including lengthening shaft sliding rail (201) and limit part (202), the lengthening shaft sliding rail (201) is opened in both sides of pipe column outer sleeve (104), and is cooperated with adjusting part (105), the limit part (202) is fixedly connected to the bottom of pipe column outer sleeve (104), and is cooperated with adjusting part (105).

2. The steering column structure with a large stroke manual adjustment function according to claim 1, characterized in that: The adjusting part (105) includes adjusting handle (105a) arranged in one side of the first side plate (102), one side of the adjusting handle (105a) is fixedly connected with driving cam (105b), one side of the driving cam (105b) is provided with driven cam (105c), and is cooperated with driving cam (105b), one side of the driving cam (105b) is fixedly connected with adjusting rod (105d), one side of the adjusting rod (105d) penetrates driven cam (105c), first side plate (102), lengthening shaft sliding rail (201) and second side plate (103), and is fixedly connected with pressing plate (105e).

3. The steering column structure with a large stroke manual adjustment function according to claim 2, characterized in that: One side of the driving cam (105b) and the driven cam (105c) is fixedly connected with protruding portion (105f), and one side of the driven cam (105c) is fixedly connected with the first side plate (102).

4. The steering column structure with a large stroke manual adjustment function according to claim 3, characterized in that: The adjusting part (105) further includes handle sleeve (105g) fixedly connected to the surface of adjusting handle (105a), and the handle sleeve (105g) is located at the end of the adjusting handle (105a).

5. The steering column structure with a large stroke manual adjustment function according to claim 4, characterized in that: The pressing plate (105e) is circular, and is in contact with the second side plate (103).

6. The steering column structure with a large stroke manual adjustment function according to claim 1, characterized in that: The limit part (202) includes limit support (202a) arranged in the bottom of the pipe column outer sleeve (104), and the limit block (202b) is fixedly connected to the top of the limit support (202a) and cooperated with the adjusting rod (105d).

7. The steering column structure with a large stroke manual adjustment function according to claim 6, characterized in that: The limit part (202) further includes vertical portion (202c) fixedly connected to both sides of the limit support (202a), and one side of the vertical portion (202c) is respectively in contact with both sides of the pipe column outer sleeve (104).

8. The steering column structure with a large stroke manual adjustment function according to claim 7, characterized in that: The vertical portion (202c) further includes fixing hole (202c-1) opened in both sides of the pipe column outer sleeve (104), and fixing bolt (202c-2) is arranged in one side of the vertical portion (202c) and cooperated with the fixing hole (202c-1).

9. The steering column structure with a large stroke manual adjustment function according to claim 8, characterized in that: The limiting piece (202) further comprises a guide clamping rod (202d) penetratingly arranged at the bottom of the limiting support (202a), and the bottom of the pipe column outer sleeve (104) is provided with a guide clamping hole (202e) matched with the guide clamping rod (202d).

10. The steering column structure with a large stroke manual adjustment function according to claim 9, characterized in that: The surface of the guide clamping rod (202d) is sleeved with a supporting spring (202f), the top of the supporting spring (202f) is fixedly connected with the limiting support (202a), and the bottom of the supporting spring (202f) is fixedly connected with the guide clamping rod (202d).

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