A test system and its universal steering column position adjustment test bench

Abstract

This utility model discloses a testing system and its universal steering column position adjustment test bench, relating to the field of steering column adjustment testing technology. The universal steering column position adjustment test bench includes: a base frame with two symmetrically distributed fixed clamps and two symmetrically distributed slide rails, on which sliders slide; two motor drive units, each mounted on a fixed clamp, with the drive end of each motor drive unit parallel to the corresponding slide rail and connected to the corresponding slider; a limiting block mounted on the slide rail, used to limit the movement stroke of the slider; a displacement measurement system mounted on the base frame, with the detection ends of the two displacement measurement systems connected to the corresponding sliders to detect the displacement of the sliders in real time; and a control device. This device can achieve rapid adaptation of steering column stroke parameters for different vehicle models and accurately verify the smoothness and user adaptability of the steering column adjustment function.

Description

Technical Field

[0001] This utility model relates to the field of steering column adjustment testing technology, and more specifically, to a universal steering column position adjustment test bench. Furthermore, it also relates to a testing system comprising the aforementioned universal steering column position adjustment test bench. Background Technology

[0002] In existing technology, the steering column is a key component connecting the steering wheel and the steering gear. When the driver turns the steering wheel, the generated torque is transmitted to the steering gear through the steering column, thereby turning the wheels and controlling the vehicle's direction. Common types of steering columns include hydraulic power steering columns, electro-hydraulic power steering columns, and electric power steering columns. Different types have their own characteristics in performance and system design, but all can achieve this basic steering function. The steering column can be adjusted to meet the driver's comfort requirements. That is, the steering column can be adjusted vertically and horizontally, making it more comfortable for the driver to operate the steering wheel and find the position most suitable for the user's driving habits.

[0003] The drive motor unit plays a crucial role, serving not only as the core of power transmission but also directly impacting vehicle performance, energy efficiency, and driving experience. It primarily consists of an electric motor and a transmission system. The electric motor is the core component that converts electrical energy into mechanical energy; common types include permanent magnet motors, induction motors, and switched reluctance motors. Different types of motors have their own advantages and disadvantages, making them suitable for different application scenarios. The transmission system converts the power output from the motor into the vehicle's driving effect; its design affects the vehicle's acceleration performance and top speed.

[0004] With the upgrading of automobile consumption, users' demands for refined human-machine interaction in the cockpit are becoming increasingly prominent, making the steering column position adjustment function, as a core module of driving posture comfort, particularly crucial. However, existing test benches, due to their rigid mechanical structure and insufficient multi-dimensional adjustment capabilities, struggle to cover real-world driving comfort verification requirements. Specifically, traditional test benches mostly employ fixed installation structures, which cannot quickly adapt to differences in parameters such as steering column adjustment travel and tilt angle across different vehicle models. This results in low efficiency in verifying the human-machine matching degree corresponding to differences in driver height and body type during testing. Furthermore, existing equipment lacks dynamic response capabilities for new interactive functions such as electric memory adjustment and multi-level fine-tuning, making it difficult for test data to accurately reflect the user's actual driving experience. Insufficient test coverage may even lead to user experience flaws in mass-produced vehicles, such as adjustment stuttering and memory position misalignment.

[0005] In summary, how to quickly adapt the steering column travel parameters of different vehicle models, accurately verify the smoothness and user adaptability of the steering column adjustment function, and improve testing efficiency and equipment reusability are problems that urgently need to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a universal steering column position adjustment test bench, which can quickly adapt the steering column travel parameters of different vehicle models and accurately verify the smoothness and user adaptability of the steering column adjustment function.

[0007] Another objective of this invention is to provide a test system that includes the aforementioned universal steering column position adjustment test bench.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A universal steering column position adjustment test bench includes:

[0010] The base frame is provided with two symmetrically distributed fixing clamps and two symmetrically distributed slide rails, and a slider is slidably mounted on the slide rails;

[0011] Two motor drive units are respectively disposed on the fixed clamp, and the drive end of the motor drive unit is disposed parallel above the corresponding slide rail and the drive end is connected to the corresponding slider.

[0012] A limiting block is disposed on the slide rail, and the limiting block is used to limit the travel of the slider;

[0013] A displacement measurement system is installed on the base frame, and the detection ends of the two displacement measurement systems are respectively connected to the corresponding sliders to detect the displacement of the sliders in real time.

[0014] The control device is connected to both the motor drive unit and the displacement measurement system.

[0015] In one embodiment, the fixing clamp includes a column vertically disposed on the base frame, an upper clamping plate vertically disposed on one side of the column, and a lower clamping plate parallel to the lower part of the upper clamping plate. Both the upper clamping plate and the lower clamping plate are provided with arc-shaped grooves to cooperate in forming a circular groove for clamping the motor drive unit.

[0016] In one embodiment, the column is provided with a sliding groove, the upper clamping plate and the lower clamping plate both move along the sliding groove and are fixed on the sliding groove by locking members, and the ends of the upper clamping plate and the lower clamping plate are both inserted into the sliding groove by telescopic members.

[0017] In one embodiment, the limiting block and the slide rail are slidably connected, and the limiting block is provided with a first positioning hole, and the slide rail is provided with a plurality of second positioning holes along its length direction. The first positioning hole and the second positioning hole are fixedly connected by positioning bolts.

[0018] In one embodiment, a scale is provided on one side of the slide rail.

[0019] In one embodiment, the positioning bolt is provided with an anti-loosening structure.

[0020] In one embodiment, the displacement measurement system includes a displacement sensor, the detection end of which is connected to the slider to record displacement data in real time and generate an adjustment trajectory curve.

[0021] In one embodiment, the displacement sensor is fixed to the base frame by an aluminum alloy mounting bracket.

[0022] In one embodiment, the displacement sensor is connected to a shielded cable to transmit signals to the control device via the shielded cable.

[0023] A testing system comprising the universal steering column position adjustment test bench as described in any of the preceding claims.

[0024] When using the universal steering column position adjustment test bench provided by this utility model, two motor drive units are respectively mounted on two symmetrically distributed fixed fixtures. The drive ends of the motor drive units are parallel to the corresponding slide rails and connected to the corresponding sliders. Furthermore, each slide rail is equipped with a limit block to limit the movement stroke of the slider. Additionally, the detection ends of two displacement measurement systems are respectively connected to the corresponding sliders, and both the motor drive units and the displacement measurement systems are connected to the control device.

[0025] During operation, the control device controls the motor drive unit (a drive component used to control the movement of the steering column) to run. The drive motor unit may include a lead screw and nut structure or a worm gear structure. The lead screw or worm is arranged parallel above the slide rail, and the drive end of the drive motor unit is fixedly connected to the slide rail to drive the slider to reciprocate along the slide rail, thereby simulating the adjustment process of the steering column and the actual working conditions of the automotive steering column adjustment motor. Moreover, the movement range of the slider is limited by a limit block, and the detection end of the displacement measurement system moves synchronously with the slider, so that the displacement measurement system can detect the displacement of the slider in real time. The displacement measurement system can record the displacement data in real time and generate an adjustment trajectory curve, thereby realizing the controllable adjustment and precise measurement of the position of the drive motor unit.

[0026] This device achieves efficient test adaptation through functional decoupling and modular layout. The base frame not only simulates the steering column fixing and guiding functions, but also features an independent and detachable design for stroke limiting (i.e., limit blocks), drive control (drive motor unit), and data acquisition module (i.e., displacement measurement system). When conducting cross-vehicle model tests, only the limit blocks and displacement measurement system of the corresponding specifications need to be replaced or adjusted, without adjusting the main structure of the base frame. This significantly reduces the workload of equipment modification and helps to improve the reusability of the test bench.

[0027] In summary, the universal steering column position adjustment test bench provided by this utility model can quickly adapt the steering column travel parameters of different vehicle models and accurately verify the smoothness and user adaptability of the steering column adjustment function.

[0028] In addition, this utility model also provides a test system including the above-mentioned universal steering column position adjustment test bench. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the universal steering column position adjustment test bench provided by this utility model;

[0031] Figure 2 for Figure 1 Top view;

[0032] Figure 3 for Figure 1 Side view;

[0033] Figure 4 for Figure 1 The main view.

[0034] Figures 1-4 middle:

[0035] 1 is the base frame, 2 is the motor drive unit, 3 is the limit block, 4 is the displacement measurement system, 5 is the slider, 6 is the fixing fixture, 61 is the column, 62 is the upper clamping plate, 63 is the lower clamping plate, 7 is the slide rail, 8 is the scale, and 9 is the shielded cable. Detailed Implementation

[0036] 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.

[0037] The core of this invention is to provide a universal steering column position adjustment test bench, which can quickly adapt steering column travel parameters for different vehicle models and accurately verify the smoothness and user adaptability of the steering column adjustment function. Another core aspect of this invention is to provide a test system including the aforementioned universal steering column position adjustment test bench.

[0038] Please refer to Figures 1 to 4 This specific embodiment provides a universal steering column position adjustment test bench, including:

[0039] The base frame 1 is provided with two symmetrically distributed fixing clamps 6 and two symmetrically distributed slide rails 7, and a slider 5 is slidably provided on the slide rails 7;

[0040] Two motor drive units 2 are respectively installed on the fixed clamp 6. The drive end of the motor drive unit 2 is parallel to the corresponding slide rail 7 and is connected to the corresponding slider 5.

[0041] Limiting block 3 is provided on slide rail 7 and is used to limit the travel of slider 5.

[0042] The displacement measurement system 4 is installed on the base frame 1. The detection ends of the two displacement measurement systems 4 are respectively connected to the corresponding sliders 5 to detect the displacement of the sliders 5 in real time.

[0043] The control device, motor drive unit 2 and displacement measurement system 4 are all connected to the control device.

[0044] It should be noted that, as Figure 1 As shown, the two fixing clamps 6 are symmetrically distributed around the central axis of the base frame 1, and the two slide rails 7 are also symmetrically distributed around the central axis of the base frame 1. Dovetail-shaped slide rails 7 and L-shaped positioning brackets can be installed on the base frame 1. The L-shaped positioning brackets are used to fix the steering column assembly, and the length direction of the slide rails 7 is parallel to the steering column's telescopic movement axis. The motor drive unit 2 is connected to the transmission mechanism through the fixing clamps 6, and its output torque is adjustable, simulating the driving force of a human hand operating the steering column's telescopic movement. That is, the motor drive unit 2 is rigidly connected to the slider 5, and the motor drive unit 2 drives the slider 5 to reciprocate along the slide rails 7, thereby simulating the steering column adjustment process. Moreover, the movement range of the slider 5 is limited by the limit block 3, and the displacement measurement system 4 can detect the displacement of the slider 5 in real time.

[0045] In practical applications, the shape, structure, type, and position of the base frame 1, motor drive unit 2, limit block 3, displacement measurement system 4, and control device can be determined according to the actual situation and needs.

[0046] When using the universal steering column position adjustment test bench provided by this utility model, two motor drive units 2 are respectively mounted on two symmetrically distributed fixed clamps 6. The drive ends of the motor drive units 2 are parallel to the corresponding slide rails 7 and connected to the corresponding sliders 5. Furthermore, each slide rail 7 is provided with a limiting block 3, which limits the travel of the slider 5. Additionally, the detection ends of two displacement measurement systems 4 are respectively connected to the corresponding sliders 5, and both the motor drive units 2 and the displacement measurement systems 4 are connected to the control device.

[0047] During use, the control device controls the operation of the motor drive unit 2 (which is the drive component for controlling the movement of the steering column). The drive motor unit 2 may include a lead screw and nut structure or a worm gear structure. The lead screw or worm is arranged parallel above the slide rail 7, and the drive end of the drive motor unit 2 is fixedly connected to the slide rail 5 to drive the slider 5 to reciprocate on the slide rail 7, thereby simulating the adjustment process of the steering column and the actual working conditions of the car steering column adjustment motor. Moreover, the movement range of the slider 5 is limited by the limit block 3, and the detection end of the displacement measurement system 4 moves synchronously with the slider 5 so that the displacement measurement system 4 can detect the displacement of the slider 5 in real time. The displacement measurement system 4 can record the displacement data in real time and generate an adjustment trajectory curve, thereby realizing the controllable adjustment and precise measurement of the position of the drive motor unit 2.

[0048] This device achieves efficient test adaptation through functional decoupling and modular layout. The base frame 1 not only simulates the steering column fixing and guiding functions, but also features an independent and detachable design for the stroke limitation (i.e., limit block 3), drive control (drive motor unit 2), and data acquisition module (i.e., displacement measurement system 4). When conducting cross-vehicle tests, only the limit block 3 and displacement measurement system 4 of the corresponding specifications need to be replaced or adjusted, without adjusting the main structure of the base frame 1. This significantly reduces the workload of equipment modification and helps to improve the reusability of the test bench.

[0049] In summary, the universal steering column position adjustment test bench provided by this utility model can quickly adapt the steering column travel parameters of different vehicle models and accurately verify the smoothness and user adaptability of the steering column adjustment function.

[0050] In one embodiment, such as Figure 1 As shown, the fixing clamp 6 includes a column 61 vertically disposed on the base frame 1, an upper clamping plate 62 vertically disposed on one side of the column 61, and a lower clamping plate 63 parallel to the lower part of the upper clamping plate 62. Both the upper clamping plate 62 and the lower clamping plate 63 are provided with arc-shaped grooves to cooperate in forming a circular groove for clamping the motor drive unit 2, so as to ensure that the fixing clamp 6 effectively clamps and fixes the motor drive unit 2.

[0051] In one embodiment, the column 61 is provided with a sliding groove, and the upper clamping plate 62 and the lower clamping plate 63 both move along the sliding groove and are fixed on the sliding groove by locking members. The ends of the upper clamping plate 62 and the lower clamping plate 63 are inserted into the sliding groove by telescopic members.

[0052] It should be noted that the height of the fixing clamp 6 is adjustable; that is, the upper clamp 62 and the lower clamp 63 can move up and down along the column 61 and are fixed at a suitable height position by locking components (fixing bolts). Furthermore, the lateral position of the fixing clamp 6 relative to the column 61 is also adjustable; that is, the upper clamp 62 and the lower clamp 63 can move laterally relative to the column 61 under the action of the telescopic component. Therefore, the fixing clamp 6 of this device can flexibly adjust the range of clamping the drive motor unit 2, thereby adapting to the motor sizes of different vehicle models. In other words, by connecting the adjustable fixing clamp 6 to the base frame 1, quick assembly and disassembly of the drive motor unit 2 and multi-dimensional positional fine-tuning can be achieved, adapting to the testing compatibility requirements of different steering column models.

[0053] In one embodiment, such as Figure 1 As shown, the limiting block 3 and the slide rail 7 are slidably connected, and the limiting block 3 is provided with a first positioning hole. The slide rail 7 is provided with a plurality of second positioning holes along its length. The first positioning hole and the second positioning hole are fixedly connected by positioning bolts. That is, the position of the limiting block 3 can be adjusted on the slide rail 7 to change the movement stroke of the slider 5.

[0054] In one embodiment, such as Figure 2 As shown, a scale 8 is provided on one side of the slide rail 7.

[0055] It should be noted that the limiting block 3 can be machined from hard aluminum alloy, and the slide rail 7 is equipped with a quick-release slot and a scale 8 to enable the sliding installation of the limiting block 3 and the dovetail-shaped slide rail 7. When the limiting block 3 moves to the desired position, the first positioning hole and the second positioning hole are aligned. At this time, the positioning bolt is passed through the first positioning hole and the second positioning hole for fixation. The limiting block 3 can limit the running stroke of the drive motor unit 2 and mark the maximum extension and retraction position of the steering column. The limiting block 3 adopts a modular splicing structure and is fixed to the slide rail 7 by positioning bolts. The slide rail 7 is equipped with a millimeter-level scale 8 on its side to adapt to the steering column travel range of different vehicle models.

[0056] It should also be noted that the base frame 1 only serves to fix and guide the steering column, the limit block 3 restricts the movement stroke of the steering column, the drive motor unit 2 is used to drive and control the steering column, and the displacement measurement system 4 is used to detect the displacement of the slider 5 in real time, record the displacement data in real time, and generate an adjustment trajectory curve. When conducting cross-vehicle testing, only the limit block 3 and displacement measurement system 4 with the corresponding specifications need to be replaced, without adjusting the main structure of the base frame 1, which can significantly reduce the workload of equipment modification and improve the reusability of the test bench.

[0057] In one embodiment, the positioning bolt is equipped with an anti-loosening structure. That is, the positioning bolt adopts an anti-loosening design, which allows for quick adjustment of the stroke range of the slider 5 while ensuring reliable positioning of the limit block 3 during operation. Common anti-loosening structures include double-nut anti-loosening, self-locking nuts, and spring washers. Double-nut anti-loosening works by installing two opposing nuts on the bolt, creating mutual pressure between them and forming a frictional force that prevents the nuts from loosening. Even if the external load changes, the pressure between the opposing nuts remains, effectively preventing the nuts from loosening. Self-locking nuts have embossed teeth designed on them, pressed into pre-drilled holes in the sheet metal. The diameter of the pre-drilled holes is slightly smaller than the diameter of the embossed teeth. When the self-locking nut is tightened, the embossed teeth embed into the pre-drilled holes, generating friction and making the nut less prone to loosening. Spring washers are added between the nut and the bolt head, providing additional elastic deformation to maintain a stable tightening force and prevent the nut from loosening. Of course, other types of anti-loosening structures can also be used to protect the positioning bolts from loosening, depending on the actual situation and needs.

[0058] In one embodiment, the displacement measurement system 4 includes a displacement sensor, the detection end of which is connected to a slider 5 to record displacement data in real time and generate an adjustment trajectory curve. For example, the displacement measurement system 4 may include a laser displacement sensor and a magnetic encoder, responsible for monitoring the actual displacement of the steering column. The detection end of the laser displacement sensor is synchronously linked with the steering column moving component (slider 5) to record displacement data in real time and generate an adjustment trajectory curve. Moreover, the laser displacement sensor supports phase-mode and pulse-mode dual-mode ranging, and achieves flexible adaptation of high-precision distance measurement modes through physical switching or signal tuning, compatible with steering column displacement detection requirements under different operating conditions.

[0059] In one embodiment, the displacement sensor is fixed to the base frame 1 by an aluminum alloy mounting bracket to collect the displacement data of the slider 5 in real time.

[0060] In one embodiment, the displacement sensor is connected to the shielded cable 9 to transmit signals to the control device through the shielded cable 9, so as to ensure signal anti-interference capability and data acquisition synchronization.

[0061] It should also be noted that the device features rapid stroke adaptation, namely the modular limit block 3 and the millimeter-level scale 8, which significantly shortens the vehicle model switching time; the device quantifies clearance error, namely the angle-displacement curve recorded by the displacement measurement system 4, which can help operators analyze and identify minute-level wear or assembly deviations in transmission components; and the device effectively improves testing efficiency, namely, through actual testing, the device has achieved significant improvements in both the efficiency of steering column stroke accuracy verification and equipment reuse rate.

[0062] Furthermore, when changing projects, only the adjustment fixture 6 needs to be replaced to adapt to the steering column of the target vehicle model, and the coordinate parameters of the limit block 3 and the displacement measurement system 4 need to be adjusted. This design significantly improves the repeatability of steering column adjustment testing, greatly shortens the cross-vehicle transfer cycle of the test bench, and effectively reduces hardware modification costs.

[0063] In addition to the universal steering column position adjustment test bench mentioned above, this utility model also provides a test system that includes the universal steering column position adjustment test bench disclosed in the above embodiments. For the structure of other parts of the test system, please refer to the prior art, which will not be repeated here.

[0064] It should be noted that the first positioning hole and the second positioning hole mentioned in this application are only used to distinguish the different positions and do not have any order of precedence.

[0065] In addition, it should be noted that the orientation or positional relationship indicated by "upper" and "lower" in this application is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the purpose of simplifying the description and making it easier to understand, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Any combination of all embodiments provided by this utility model is within the protection scope of this utility model and will not be elaborated upon here.

[0067] The testing system and its universal steering column position adjustment test bench provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A universal steering column position adjustment test bench, characterized in that, include: The base frame (1) is provided with two symmetrically distributed fixing clamps (6) and two symmetrically distributed slide rails (7), and a slider (5) is slidably provided on the slide rails (7); Two motor drive units (2) are respectively disposed on the fixed clamp (6). The driving end of the motor drive unit (2) is disposed parallel above the corresponding slide rail (7) and the driving end is connected to the corresponding slider (5). A limiting block (3) is provided on the slide rail (7), and the limiting block (3) is used to limit the travel of the slider (5); A displacement measurement system (4) is provided on the base frame (1). The detection ends of the two displacement measurement systems (4) are respectively connected to the corresponding sliders (5) to detect the displacement of the sliders (5) in real time. The control device is connected to both the motor drive unit (2) and the displacement measurement system (4).

2. The universal steering column position adjustment test bench of claim 1, wherein, The fixing clamp (6) includes a column (61) vertically disposed on the base frame (1), an upper clamping plate (62) vertically disposed on one side of the column (61), and a lower clamping plate (63) parallel to the lower part of the upper clamping plate (62). Both the upper clamping plate (62) and the lower clamping plate (63) are provided with arc-shaped grooves to cooperate in forming a circular groove for clamping the motor drive unit (2).

3. The universal steering column position adjustment test bench of claim 2, wherein, The column (61) is provided with a sliding groove. The upper clamping plate (62) and the lower clamping plate (63) move along the sliding groove and are fixed on the sliding groove by locking members. The ends of the upper clamping plate (62) and the lower clamping plate (63) are inserted into the sliding groove by telescopic members.

4. The universal steering column position adjustment test bench according to any one of claims 1 to 3, characterized in that The limiting block (3) and the slide rail (7) are slidably connected, and the limiting block (3) is provided with a first positioning hole, and the slide rail (7) is provided with a plurality of second positioning holes along the length direction. The first positioning hole and the second positioning hole are fixedly connected by positioning bolts.

5. The universal steering column position adjustment test bench of claim 4, wherein, A scale (8) is provided on one side of the slide rail (7).

6. The universal steering column position adjustment test bench of claim 4, wherein, The positioning bolt is equipped with an anti-loosening structure.

7. The universal steering column position adjustment test bench according to any one of claims 1 to 3, characterized in that The displacement measurement system (4) includes a displacement sensor, the detection end of which is connected to the slider (5) to record displacement data in real time and generate an adjustment trajectory curve.

8. The universal steering column position adjustment test bench of claim 7, wherein, The displacement sensor is fixed to the base frame (1) by an aluminum alloy mounting base.

9. The universal steering column position adjustment test bench of claim 7, wherein, The displacement sensor is connected to the shielded cable (9) to transmit signals to the control device through the shielded cable (9).

10. A test system, characterized by The universal steering column position adjustment test bench as described in any one of claims 1 to 9 above.

Images