Commercial vehicle large-angle adjusting steering column structure and vehicle

Abstract

The utility model discloses a kind of commercial vehicle large-angle adjusting steering column structure and vehicle, comprising: angle adjusting support is slidably set in height adjusting support and fixed support within along rotating fulcrum rotation;Wherein, lower adjusting component is set on angle adjusting slide way of height adjusting support and fixed support and height adjusting slide way on angle adjusting support, and the end of lower adjusting component is provided with ergonomics handle and torsion cam, by rotating the ergonomics handle can drive the relative setting of torsion cam Outer rotating cam and inner fixed cam cooperate, realize the locking and release of height adjusting support and fixed support and angle adjusting support, to carry out the position angle adjustment of angle adjusting support driving steering wheel.The utility model uses pure mechanical type outer pressure locking, replace complex pneumatic element by torsion cam and ergonomics handle, structure is greatly simplified, and the number of parts is less, low in cost, high reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of commercial vehicle steering systems, specifically, to a large-angle adjustable steering column structure and vehicle for commercial vehicles. Background Technology

[0002] As the requirements for driving comfort in commercial vehicles increase, the application of large-angle adjustable steering columns is becoming more and more widespread, in order to adapt to the driving posture of drivers of different heights and body types and to facilitate getting in and out of the vehicle.

[0003] Currently, large-angle adjustable steering columns in commercial vehicles mostly employ pneumatic adjustment. For example, Chinese patent CN117416406A discloses a pneumatically adjustable steering column, which uses an inward-pushing locking scheme. This requires a cylinder as the drive source and is accompanied by numerous components such as locking paddles, locking slider assemblies, height adjustment brackets, air hoses, and time-delay switches. This approach has the following inherent drawbacks:

[0004] (1) Complex structure and many parts: The pneumatic circuit and locking linkage mechanism result in a large number of parts and time-consuming assembly.

[0005] (2) High machining accuracy requirements and low yield: In order to achieve the linkage between the cylinder, locking paddle and locking slider assembly, the mating surface of the height adjustment bracket needs to be machined with high precision (such as turning or grinding), resulting in high manufacturing cost and difficulty in guaranteeing the yield.

[0006] (3) Limited room for optimization and cost reduction: For models that have already been equipped with this system, the cost of improving the original aerodynamic solution is high because the peripheral components are already fixed.

[0007] Therefore, there is an urgent need for a new type of steering column structure that is simplified, low in cost, and can achieve the same large-angle adjustment function. Utility Model Content

[0008] To address the aforementioned technical problems, the present invention aims to provide a large-angle adjustable steering column structure and vehicle for commercial vehicles. While ensuring the large-angle adjustment function, it adopts an external pressure locking scheme to replace the existing internal push locking scheme, and uses an ergonomic handle and torque cam structure to replace the locking cylinder, locking paddle, locking slider group, delay switch, etc. At the same time, it integrates the height adjustment bracket with the fixed support design to simplify the structure, reduce the number of parts and assembly time, reduce processing difficulty, and improve the yield rate.

[0009] The present invention solves the above problems through the following technical solution:

[0010] A large-angle adjustable steering column structure for commercial vehicles includes: an angle adjustment bracket for connecting to a steering wheel, a height adjustment bracket and fixing support for fixing to the vehicle body, a lower adjustment component, an ergonomic handle, and a torque cam.

[0011] An angle adjustment bracket is slidable up and down and rotates around a pivot point within a height adjustment bracket / fixed support. The angle adjustment bracket has at least one height adjustment track, and the height adjustment bracket / fixed support has an arc-shaped angle adjustment track. A lower adjustment component passes through both the angle and height adjustment tracks, and its end has an ergonomic handle and a torque cam. Rotating the ergonomic handle engages the opposing outer and inner fixed cams of the torque cam, locking and releasing the height adjustment bracket / fixed support and the angle adjustment bracket, thereby adjusting the position and angle of the steering wheel driven by the angle adjustment bracket.

[0012] As a further improvement, the ergonomic handle is fixedly connected to the outer rotating cam at an angle, and the inner fixed cam is fixedly connected to the height adjustment bracket / fixed support at an angle. When the ergonomic handle is operated, the outer rotating cam is driven to rotate relative to the inner fixed cam. The inclined mating part of the outer rotating cam and the inner fixed cam is driven to generate axial displacement, which presses or releases the height adjustment bracket / fixed support and the angle adjustment bracket, thereby achieving locking and releasing.

[0013] As a further improvement, the structure also includes a locking sleeve.

[0014] The locking sleeve is installed inside the angle adjustment bracket and is used to replace the height adjustment bracket and serve as a fixed support to achieve angle-fixed connection with the inner fixed cam.

[0015] As a further improvement, the outer rotating cam and the inner fixed cam have the same structure. One end of the outer rotating cam is provided with a limiting protrusion to achieve an angle-fixed connection with it. The other end is provided with a limiting boss and a limiting groove that cooperate with each other to limit the maximum relative rotation angle between the two. The other end has a number of inclined mating parts inside. When the two rotate relative to each other, the inclined mating parts squeeze each other to generate an axial clamping force, or they separate from each other to release the clamping force.

[0016] As a further improvement, the structure also includes: an upper adjustment component and another height adjustment slide that cooperates with the upper adjustment component and is disposed on the height adjustment bracket and fixed support; the upper adjustment component is disposed through the height adjustment slide and the angle adjustment bracket so that the upper adjustment component can slide up and down with the angle adjustment bracket relative to the height adjustment bracket and fixed support, and constitutes the rotation fulcrum for adjusting the steering wheel angle.

[0017] As a further improvement, the structure also includes a steering column tube and a steering spindle; the steering column tube is connected to the steering spindle via a bearing and fixed to the angle adjustment bracket via screws, thereby realizing the connection and installation of the steering spindle and the angle adjustment bracket.

[0018] As a further improvement, the length of the height adjustment slide is 60-70mm.

[0019] As a further improvement, the central angle corresponding to the arc trajectory of the angle adjustment slide is 27°-35°.

[0020] As a further improvement, the height adjustment bracket and fixed support is a U-shaped structure, with its closed part used to fix it to the vehicle body and the opening part provided with the height adjustment slide.

[0021] Furthermore, this utility model also solves the above problems through the following technical solutions:

[0022] A vehicle is equipped with a commercial vehicle large-angle adjustable steering column structure as described above.

[0023] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0024] (1) This utility model adopts a purely mechanical external pressure locking mechanism. It replaces complex pneumatic components with a torsion cam and an ergonomic handle, which greatly simplifies the structure, reduces the number of parts, lowers the cost, and increases the reliability.

[0025] (2) The height adjustment bracket and fixed support of this utility model are integrated into a U-shaped structure, which is compact, rigid, avoids high-precision processing, and has a high yield rate.

[0026] (3) This utility model achieves decoupled adjustment of height and angle through the ingenious cooperation of the upper and lower adjustment components and the height and angle adjustment slides, which is smooth to operate and has a large adjustment range. It is also compatible with the existing pneumatic adjustment column mounting interface and can be directly replaced, providing a flexible and low-cost solution for vehicle configuration. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a commercial vehicle large-angle adjustable steering column structure according to the present invention;

[0028] Figure 2 This is a schematic diagram of the ergonomic handle and torque cam of this utility model.

[0029] Figure label:

[0030] 1. Steering spindle; 2. Steering column tube; 3. Height adjustment bracket / fixed support; 4. Upper adjustment assembly; 5. Lower adjustment assembly; 6. Angle adjustment bracket; 7. Locking sleeve; 8. Ergonomic handle; 9. Torque cam; 91. External rotating cam; 92. Internal fixed cam; 93. Limiting protrusion; 94. Limiting boss; 95. Limiting groove; 96. Angled mating part; 10. Height adjustment slide; 11. Angle adjustment slide. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example:

[0033] Combined with appendix Figure 1-2 As shown, a large-angle adjustable steering column structure for commercial vehicles includes: a steering spindle 1, a steering column tube 2, an angle adjustment bracket 6, a height adjustment bracket / fixed support 3, an upper adjustment assembly 4, a lower adjustment assembly 5, a locking sleeve 7, an ergonomic handle 8, and a torque cam 9.

[0034] One end of the steering spindle 1 is used to connect to the steering wheel, and the other end is connected to the steering column tube 2 through a bearing; the steering column tube 2 is fixedly connected to one end of the angle adjustment bracket 6.

[0035] The height adjustment bracket and fixed support 3 has a "U" shaped structure. The closed part is used to fix it to the vehicle body, and the open part is provided with no less than two height adjustment slides 10 that are parallel to the axis of the steering spindle 1. These are the first height adjustment slide and the second height adjustment slide, respectively. The first height adjustment slide is located close to the steering column tube 2.

[0036] Angle adjustment bracket 6 is located inside the height adjustment bracket and fixed support 3;

[0037] Angle adjustment bracket 6 is provided with an angle adjustment slide 11 that is inclined relative to the axis of steering spindle 1; Angle adjustment bracket 6 and height adjustment bracket / fixed support 3 are provided with upper adjustment component 4 on the left and right sides, and upper adjustment component 4 is fixed to angle adjustment bracket 6 and can slide up and down along the first height adjustment slide on height adjustment bracket / fixed support 3.

[0038] The lower adjustment component 5 is installed through the second height adjustment slide and the angle adjustment slide 11, and is connected to the locking sleeve 7 installed in the angle adjustment bracket 6. It can slide up and down along the height adjustment slide 10 with the locking sleeve 7 to achieve height adjustment. With the presence of the angle adjustment slide 11, the angle adjustment bracket 6 achieves rotation fulcrum through the upper adjustment component 4, which allows the angle adjustment bracket 6 to rotate relative to the lower adjustment component 5 to achieve angle adjustment.

[0039] The ergonomic handle 8 and the torque cam 9 are mounted on the connecting rod of the lower adjustment component 5 and are located outside the height adjustment bracket and fixed support 3.

[0040] Specifically, the torsion cam 9 has an outer rotating cam 91 and an inner fixed cam 92 with identical structures. The outer rotating cam 91 and the inner fixed cam 92 are arranged opposite each other. The ergonomic handle 8 is angularly fixedly connected to the outer rotating cam 91 of the torsion cam 9. The height adjustment bracket / fixed support 3 is angularly fixedly connected to the inner fixed cam 92. The outer rotating cam 91 and the inner fixed cam 92 rotate and cooperate with each other to achieve pressing or releasing contact, so as to achieve pressing and unlocking of the height adjustment bracket / fixed support 3 and the angle adjustment bracket 6.

[0041] When the ergonomic handle 8 is operated, it can drive the torsion cam 9 to rotate relative to each other, and generate axial displacement through the change of its contour, thereby pressing or releasing the height adjustment bracket / fixed support 3 and the angle adjustment bracket 6, realizing the locking and releasing of the steering column structure.

[0042] Preferably, both the outer rotating cam 91 and the inner fixed cam 92 have through holes. One end is provided with a limiting protrusion 93 that can achieve radial limiting, which enables connection and installation with the ergonomic handle 8 or the height adjustment bracket / fixed support 3. The other end has several limiting bosses 94 and limiting grooves 95 that cooperate with the limiting bosses, so that when the outer rotating cam 91 and the inner fixed cam 92 are set opposite to each other, the limiting bosses 94 and the limiting grooves 95 cooperate with each other to limit the relative rotation distance of the outer rotating cam 91 and the inner fixed cam 92. The other end has several inclined mating parts 96, so that when the outer rotating cam 91 and the inner fixed cam 92 are set opposite to each other, the inclined mating parts 96 can cooperate with each other to achieve pressing or releasing contact.

[0043] In an optional embodiment, the inner fixing cam 92 can also cooperate with the locking sleeve 7 to achieve anti-rotation. That is, the limiting protrusion 93 of the inner fixing cam 92 cooperates with the locking sleeve 7.

[0044] Preferably, the height adjustment slide 10 has a length of 60~70mm, and the angle adjustment slide 11 has an angle of 27°~35° relative to the upper adjustment component 4, preferably 32°, so that the driver can make large-stroke and large-angle adjustments of 70mm up and down and 32° forward and backward as needed.

[0045] In one specific embodiment, a large-angle adjustable steering column structure comprises a steering spindle 1, a steering column tube 2, a height adjustment bracket / fixed support 3, an upper adjustment component 4, a lower adjustment component 5, an angle adjustment bracket 6, a locking sleeve 7, an ergonomic handle 8, and a torque cam 9.

[0046] One end of the steering spindle 1 is connected to the steering wheel to transmit the driver's steering intention. The integrated height adjustment bracket / fixed support 3 is fixed to the front of the vehicle via a bracket. The height adjustment bracket / fixed support 3 has at least two height adjustment slides 10. The angle adjustment bracket 6 has an angle adjustment slide 11. The other end of the steering spindle 1 is connected to the steering column tube 2 via a bearing. The steering column tube 2 is fixed to the angle adjustment bracket 6 with bolts. The upper adjustment component 4 is set on the height adjustment bracket / fixed support 3 and can slide up and down in the height adjustment slide 10. The lower adjustment component 5 can slide up and down in the height adjustment slide 10 synchronously with the locking sleeve 7, the ergonomic handle 8, and the torque cam 9. The torque cam 9 consists of two identical cams with special contours. The shape of the ergonomic handle 8 simulates the shape of human fingers, making it most convenient for the driver to operate.

[0047] When the driver needs to adjust the steering column posture, they manually lift the ergonomic handle 8 upwards. At this time, the left half of the torque cam 9 connected to the handle 8 rotates counterclockwise. Since the right half of the torque cam 9 is axially fixed to the height adjustment slide 10 and cannot rotate, the two specially contoured cams rotate relative to each other, releasing the previously pressed surfaces and thus releasing the handle. At this point, the driver can make a large-stroke, large-angle adjustment of 70mm up and down and 32° forward and backward as needed. Specifically, when vertical adjustment is required, the height adjustment bracket / fixed support 3... When stationary, the steering spindle 1, steering column tube 2, upper adjustment assembly 4, lower adjustment assembly 5, locking sleeve 7, ergonomic handle 8, and torque cam 9 all slide up and down synchronously along the height adjustment slide rail 10. When front and rear angle adjustment is required, the height adjustment bracket / fixed support 3, upper adjustment assembly 4, lower adjustment assembly 5, locking sleeve 7, ergonomic handle 8, and torque cam 9 remain stationary, while the steering spindle 1, steering column tube 2, and angle adjustment bracket 6 rotate synchronously around the center of the upper adjustment assembly 4, with the rotation trajectory defined by the angle adjustment slide rail 11. This achieves stepless smooth adjustment of the steering column.

[0048] After the steering column attitude adjustment is completed, manually press down the ergonomic handle 8. The left half of the torque cam 9 connected to the ergonomic handle 8 will rotate clockwise, tightly fitting the two cams with special contours to achieve a secure lock.

[0049] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A large-angle adjustable steering column structure for commercial vehicles, characterized in that, include: Angle adjustment bracket for connecting to the steering wheel, height adjustment bracket and fixing support for fixing to the vehicle body, as well as lower adjustment assembly, ergonomic handle and torque cam. An angle adjustment bracket is slidable up and down and rotates around a pivot point within a height adjustment bracket / fixed support. The angle adjustment bracket has at least one height adjustment track, and the height adjustment bracket / fixed support has an arc-shaped angle adjustment track. A lower adjustment component passes through both the angle and height adjustment tracks, and its end has an ergonomic handle and a torque cam. Rotating the ergonomic handle engages the opposing outer and inner fixed cams of the torque cam, locking and releasing the height adjustment bracket / fixed support and the angle adjustment bracket, thereby adjusting the position and angle of the steering wheel driven by the angle adjustment bracket.

2. The commercial vehicle large-angle adjustable steering column structure according to claim 1, characterized in that, The ergonomic handle is fixedly connected to the outer rotating cam at an angle, and the inner fixed cam is fixedly connected to the height adjustment bracket / fixed support at an angle. When the ergonomic handle is operated, the outer rotating cam is driven to rotate relative to the inner fixed cam. The inclined mating part of the outer rotating cam and the inner fixed cam is driven to generate axial displacement, which presses or releases the height adjustment bracket / fixed support and the angle adjustment bracket, thereby achieving locking and releasing.

3. The commercial vehicle large-angle adjustable steering column structure according to claim 2, characterized in that, The structure also includes a locking sleeve. The locking sleeve is installed inside the angle adjustment bracket and is used to replace the height adjustment bracket and serve as a fixed support to achieve angle-fixed connection with the inner fixed cam.

4. The commercial vehicle large-angle adjustable steering column structure according to claim 2 or 3, characterized in that, The outer rotating cam and the inner fixed cam have the same structure. One end of the outer rotating cam is provided with a limiting protrusion to achieve an angle-fixed connection with it. The other end is provided with a limiting boss and a limiting groove that cooperate with each other to limit the maximum relative rotation angle between the two. The other end has a number of inclined mating parts inside. When the two rotate relative to each other, the inclined mating parts squeeze each other to generate an axial clamping force, or they separate from each other to release the clamping force.

5. The commercial vehicle large-angle adjustable steering column structure according to claim 1, characterized in that, The structure further includes: an upper adjustment component and another height adjustment slide that cooperates with the upper adjustment component and is disposed on the height adjustment bracket and fixed support; the upper adjustment component is disposed through the height adjustment slide and the angle adjustment bracket so that the upper adjustment component can slide up and down with the angle adjustment bracket relative to the height adjustment bracket and fixed support, and constitutes the rotation fulcrum for adjusting the steering wheel angle.

6. The commercial vehicle large-angle adjustable steering column structure according to claim 1, characterized in that, The structure also includes: a steering column tube and a steering spindle; The steering column tube is connected to the steering spindle via a bearing and fixed to the angle adjustment bracket via screws, thereby achieving the connection and installation of the steering spindle and the angle adjustment bracket.

7. The commercial vehicle large-angle adjustable steering column structure according to claim 1, characterized in that, The length of the height adjustment slide is 60-70mm.

8. The commercial vehicle large-angle adjustable steering column structure according to claim 1, characterized in that, The central angle corresponding to the arc trajectory of the angle adjustment slide is 27°-35°.

9. The commercial vehicle large-angle adjustable steering column structure according to claim 1, characterized in that, The height adjustment bracket and fixed support is a U-shaped structure, with its closed part used to fix it to the vehicle body and its open part provided with the height adjustment slide.

10. A vehicle, characterized in that, The vehicle is equipped with a large-angle adjustable steering column structure as described in any one of claims 1-9.

Images