A kind of testing tool and testing method of automobile steering force

Abstract

The invention discloses a testing tool for automobile steering force and a testing method thereof, comprising a conical surface flange, a spline hole flange and a spline shaft, wherein a conical boss structure is arranged at the center of the upper surface of the conical surface flange, the lower end of the spline shaft is connected with the upper end of the conical boss structure, a threaded hole is arranged inside the spline shaft, a countersunk hole is arranged at the center of the lower surface of the conical boss structure, a bolt corresponding to the threaded hole is arranged in the countersunk hole, a spline hole is arranged at the center of the upper surface of the spline hole flange, a conical hole is arranged on the lower surface of the spline hole flange, the conical hole is connected with the spline hole, circular boss structures are arranged at the centers of corresponding surfaces of the spline hole flange and the conical surface flange, and the circular boss structure is convenient for matching and connecting with a sensor; the invention connects a sensor for testing steering force and steering wheel angle in series in a steering system, ensures axis coincidence, eliminates the influence of sensor eccentricity on test results, and improves test accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of automobile steering force testing, in particular to an automobile steering force testing tool and a testing method thereof. Background Art

[0002] At present, in the automobile steering force test, there are two common installation methods for the force measuring steering wheel used for the actual vehicle steering force test: one is to use three claws to directly fix it on the original vehicle steering wheel. This type of sensor will have a small amount of eccentricity. Although it does not affect the torque test, it is difficult to identify smaller torque fluctuations. The second is to use a quick-release spline sleeve structure. This structure can effectively eliminate eccentricity, but in order to ensure easy disassembly and assembly, a clearance fit will be used, which affects the test accuracy. The existing automobile steering force test tooling and test methods cannot meet the needs of actual use, so there is an urgent need for improved technology on the market to solve the above problems. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects, provide a test tool for automobile steering force and a test method thereof, connect sensors for testing steering force and steering wheel angle in series in the steering system, ensure axis coincidence, eliminate the influence of sensor eccentricity on test results, improve test accuracy, use the original vehicle steering wheel, and keep the feel in the test consistent with the feel of the original vehicle adjustment, achieve a one-to-one correspondence effect between subjective evaluation and objective data, which is beneficial to steering system adjustment and calibration, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a kind of testing tool and testing method of automobile steering force, comprising a conical flange, a spline hole flange and a spline shaft, a conical boss structure is arranged at the center of the upper surface of the conical flange, the lower end of the spline shaft is connected to the upper end of the conical boss structure, a threaded hole is arranged inside the spline shaft, a countersunk hole is arranged at the center of the lower surface of the conical boss structure, a bolt corresponding to the threaded hole is arranged in the countersunk hole, a spline hole is arranged at the center of the upper surface of the spline hole flange, a conical hole is arranged on the lower surface of the spline hole flange, the conical hole is connected with the spline hole, circular boss structures are arranged at the centers of the corresponding surfaces of the spline hole flange and the conical flange, the circular boss structure is convenient for matching and connecting with the sensor to ensure the coaxiality of the sensor and the steering shaft.

[0005] Furthermore, the mating surface between the lower end of the spline shaft and the upper end of the conical boss structure is set to a square structure, and the square structure increases the torque of the connecting surface to withstand the steering torque, making the structure more solid.

[0006] Furthermore, corresponding fixing holes are provided at the edge of the conical flange and the edge of the spline hole flange, which facilitate connection and fixation with the sensor, while ensuring the coaxiality of the conical flange, the spline hole flange and the sensor, thereby improving the accuracy of the test.

[0007] Furthermore, the diameter of the upper end of the tapered hole is smaller than the diameter of the spline hole, and the spline hole matches the spline shaft, and the tapered hole matches the tapered boss structure.

[0008] Furthermore, a method for testing the steering force of an automobile is characterized by comprising the following steps:

[0009] S1: First remove the original steering wheel, align the tapered hole on the spline hole flange with the upper end of the original steering column, install the spline hole flange on the original steering column, and use nuts to firmly fix the spline hole flange and the original steering column;

[0010] S2: Install the sensor on the spline hole flange so that the center of the sensor corresponds to the circular boss structure, ensure the coaxiality of the steering shaft and the sensor, and then use screws to firmly fix the spline hole flange and the sensor;

[0011] S3: Align the circular boss structure on the lower surface of the conical flange with the center of the sensor, and then fix the conical flange to the upper surface of the sensor with screws;

[0012] S4: Finally, install the original vehicle steering wheel on the spline shaft on the conical flange and secure it with bolts.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the testing tool for automobile steering force has the following advantages:

[0014] 1. The present invention is provided with bolts, which facilitate the connection and fixation of the conical flange and the spline shaft, and the assembly is convenient. The square structure increases the torque of the connecting surface to withstand the steering torque, making the structure more solid. The modular design of the conical flange and the spline shaft facilitates the processing of the spline shaft, making the processing convenient.

[0015] 2. The present invention is provided with a boss structure, and the circular boss structure is convenient for connection with the sensor to ensure the coaxiality of the sensor and the steering shaft. It is convenient for connection and fixation with the sensor through the fixing hole, and at the same time ensures the coaxiality of the conical flange, the spline hole flange and the sensor, thereby improving the accuracy of the test. The spline hole and the spline shaft facilitate the connection of the conical flange with the spline hole flange.

[0016] 3. The present invention connects the sensors for testing steering force and steering wheel angle in series in the steering system to ensure axis coincidence, eliminate the influence of sensor eccentricity on test results, improve test accuracy, use the original vehicle steering wheel, and keep the hand feel consistent with the hand feel of the original vehicle adjustment during the test, achieving a one-to-one correspondence effect between subjective evaluation and objective data, which is beneficial to steering system adjustment and calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the conical flange of the present invention;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the spline hole flange of the present invention;

[0020] Figure 4 This is a schematic diagram of the test structure for installing the present invention;

[0021] Figure 5 It is a schematic diagram of the connection structure between the conical flange and the spline hole flange of the present invention.

[0022] In the figure: 1 conical flange, 2 spline shaft, 3 conical boss structure, 4 circular boss structure, 5 spline hole flange, 6 spline hole, 7 fixing hole, 8 countersunk hole, 9 square structure, 10 threaded hole, 11 bolt, 12 conical hole, 13 sensor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1

[0025] See also Figure 1-2The present invention provides a technical solution: a test fixture for automobile steering force and a test method thereof, comprising a conical flange 1, a spline hole flange 5 and a spline shaft 2, a conical boss structure 3 is arranged at the center of the upper surface of the conical flange 1, the lower end of the spline shaft 2 is connected to the upper end of the conical boss structure 3, the matching surface between the lower end of the spline shaft 2 and the upper end of the conical boss structure 3 is arranged as a square structure 9, the square structure 9 increases the torque of the connecting surface to bear the steering torque, so that the structure is more firm, and the spline shaft 2 is A threaded hole 10 is provided inside, a countersunk hole 8 is provided at the center of the lower surface of the tapered boss structure 3, a bolt 11 corresponding to the threaded hole 10 is provided in the countersunk hole 8, and the bolt 11 is convenient for the conical flange 1 to be connected and fixed with the spline shaft 2, and the assembly is convenient. A spline hole 6 is provided at the center of the upper surface of the spline hole flange 5, and a tapered hole 12 is provided on the lower surface of the spline hole flange 5. The tapered hole 12 is connected to the spline hole 6, and the diameter of the upper end of the tapered hole 12 is smaller than the diameter of the spline hole 6, and the spline hole 6 is connected to the spline shaft 2. The spline hole 6 and the spline shaft 2 cooperate with each other to facilitate the connection of the conical flange 1 and the spline hole flange 5. The conical hole 12 cooperates with the conical boss structure 3. The centers of the corresponding surfaces of the spline hole flange 5 and the conical flange 1 are provided with circular boss structures 4. The circular boss structure 4 is convenient for cooperation and connection with the sensor 13 to ensure the coaxiality of the sensor 13 and the steering shaft. Corresponding fixing holes 7 are provided at the edges of the conical flange 1 and the edges of the spline hole flange 5. The fixing holes 7 are convenient for connection and fixation with the sensor 13, and at the same time, the coaxiality of the conical flange 1, the spline hole flange 5 and the sensor 13 is ensured, thereby improving the accuracy of the test. The present invention connects the sensor for testing the steering force and the steering wheel angle in series in the steering system to ensure the coincidence of the axis lines, eliminate the influence of the sensor eccentricity on the test results, improve the test accuracy, use the original vehicle steering wheel, the feel in the test is consistent with the feel of the original vehicle adjustment, achieves a one-to-one correspondence effect between the subjective evaluation and the objective data, and is beneficial to the adjustment and calibration of the steering system.

[0026] A method for testing the steering force of an automobile, characterized in that it comprises the following steps:

[0027] S1: First, remove the original vehicle steering wheel, align the tapered hole 12 on the spline hole flange 5 with the upper end of the original vehicle steering column, install the spline hole flange 5 on the original vehicle steering column, and use nuts to firmly fix the spline hole flange 5 and the original vehicle steering column;

[0028] S2: Install the sensor 13 on the spline hole flange 5 so that the center of the sensor 13 corresponds to the circular boss structure 4, ensure the coaxiality of the steering shaft and the sensor 13, and then use screws to firmly fix the spline hole flange 5 and the sensor 13;

[0029] S3: Align the circular boss structure 4 on the lower surface of the conical flange 1 with the center of the sensor 13, and then fix the conical flange 1 to the upper surface of the sensor 13 with screws;

[0030] S4: Finally, install the original vehicle steering wheel on the spline shaft 2 on the conical flange 1 and fix it with bolts.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test fixture for automobile steering force, comprising a conical flange (1), a spline hole flange (5) and a spline shaft (2), characterized in that: A conical boss structure (3) is provided at the center of the upper surface of the conical flange (1); the lower end of the spline shaft (2) is connected to the upper end of the conical boss structure (3); a threaded hole (10) is provided inside the spline shaft (2); a countersunk hole (8) is provided at the center of the lower surface of the conical boss structure (3); a bolt (11) corresponding to the threaded hole (10) is provided in the countersunk hole (8); a spline hole (6) is provided at the center of the upper surface of the spline hole flange (5); and a spline hole (6) is provided on the lower surface of the spline hole flange (5). A conical hole (12) is provided, the conical hole (12) is connected to the spline hole (6), and the centers of the corresponding surfaces of the spline hole flange (5) and the conical surface flange (1) are both provided with a circular boss structure (4); the mating surface between the lower end of the spline shaft (2) and the upper end of the conical boss structure (3) is provided with a square structure (9); the diameter of the upper end of the conical hole (12) is smaller than the diameter of the spline hole (6), and the spline hole (6) is mated with the spline shaft (2), and the conical hole (12) is mated with the conical boss structure (3).

2. The vehicle steering force testing tool according to claim 1, characterized in that: Corresponding fixing holes (7) are provided at the edge of the conical flange (1) and at the edge of the spline hole flange (5).

3. A method for testing automobile steering force, the method being applicable to the automobile steering force testing tool as claimed in claim 1, characterized in that: The following steps are involved: S1: First remove the original steering wheel, align the tapered hole on the spline hole flange with the upper end of the original steering column, install the spline hole flange on the original steering column, and use nuts to firmly fix the spline hole flange and the original steering column; S2: Install the sensor on the spline hole flange so that the center of the sensor corresponds to the circular boss structure, ensure the coaxiality of the steering shaft and the sensor, and then use screws to firmly fix the spline hole flange and the sensor; S3: Align the circular boss structure on the lower surface of the conical flange with the center of the sensor, and then fix the conical flange to the upper surface of the sensor with screws; S4: Finally, install the original vehicle steering wheel on the spline shaft on the conical flange and secure it with bolts.

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