Steering wheel corner torque measuring instrument

Abstract

The utility model provides a steering wheel corner torque measuring instrument, comprising an upper cover and a lower cover, the lower end face of the upper cover is provided with an outer ring and an inner ring; the outer side wall of the outer ring abuts against the inner wall of the lower cover. A torque sensor is arranged in the center of the upper cover; one end face of the bearing inner ring is connected with the inner ring, a bearing is arranged on the outer wall of the bearing inner ring, and the bearing inner ring is connected with the inner wall of the lower cover through the bearing; the upper cover and the lower cover are further provided with corner measuring assemblies, and the corner measuring assemblies are arranged on the upper cover and the lower cover respectively. The steering wheel is fixed by the upper cover through a clamp; the torque sensor and the rotation angle measuring assembly record the rotation state between the upper cover and the lower cover. According to the utility model, the upper cover and the lower cover move relative to each other to record corner data information in the test process, the effect of synchronous measurement of torque and corner is realized through structure optimization and integration, and the detection efficiency of equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steering wheel angle torque measurement, in particular to a steering wheel angle torque measuring instrument. Background Art

[0002] The basic operating principle of an electric power steering (EPS) system is that the EPS controller controls the motor to generate steering assistance based on signals collected by sensors, including steering wheel torque, steering wheel angle, and vehicle speed. Therefore, specialized equipment is required to measure and analyze the steering wheel angle and torque state to facilitate appropriate EPS controller calibration.

[0003] In the existing technology, the steering wheel angle and torque measurement structure layout is not easy to achieve synchronous measurement. Generally, data collection can only be achieved by separate detection of torque or angle equipment. The test process is cumbersome and is not conducive to improving test efficiency. Utility Model Content

[0004] The utility model provides a steering wheel angle torque measuring instrument, which aims to solve the problems that torque or angle equipment needs to be tested separately to realize data collection, the test process is cumbersome and not conducive to improving test efficiency, and the structural layout of the steering wheel angle torque measuring instrument is unreasonable.

[0005] The utility model is implemented as follows: a steering wheel angle torque measuring instrument, comprising:

[0006] An upper cover and a lower cover, wherein the lower end surface of the upper cover is provided with an outer ring and an inner ring; the outer wall of the outer ring abuts against the inner wall of the lower cover; a torque sensor is provided at the center of the upper cover; a conductive slip ring is provided between the upper cover and the lower cover;

[0007] A bearing inner ring, one end surface of which is connected to the inner ring, an outer wall of which is provided with a bearing, and the bearing inner ring is connected to the inner wall of the lower cover via the bearing;

[0008] The upper cover and the lower cover are further provided with a rotation angle measurement component, and the rotation angle measurement component is respectively arranged on the upper cover and the lower cover;

[0009] The upper cover fixes the steering wheel by a clamp. When the steering wheel rotates, the upper cover rotates along with the steering wheel, and the lower cover remains fixed; the torque sensor and the angle measurement component record the rotation state between the upper cover and the lower cover.

[0010] Preferably, the rotation angle measurement assembly includes a magnetic grid and a magnetic reading head;

[0011] The magnetic grid is located on the outer wall of the outer ring and abuts against the inner wall of the lower cover;

[0012] A junction box is also provided on the outer edge of the lower cover. The magnetic reading head is arranged in the junction box and extends into the inner wall of the lower cover to contact and connect with the magnetic grid.

[0013] Preferably, the conductive slip ring comprises a copper ring and a copper brush;

[0014] The copper ring is arranged on the end surface of the upper cover facing the lower cover, and the copper ring is located between the outer ring and the inner ring to form an independent chamber;

[0015] The copper brush is arranged on the end surface of the lower cover facing the upper cover, and the copper brush is located between the outer ring plate of the lower cover and the bearing;

[0016] When the upper cover and the lower cover are assembled together, the copper ring and the copper brush are in contact and connected with each other.

[0017] Preferably, the positions of the copper ring and the copper brush correspond to each other.

[0018] Preferably, the bearing inner ring is fixedly connected to the upper inner ring of the upper cover by bolts.

[0019] Preferably, a clamp for fixing the steering wheel is provided on the end surface of the upper cover away from the lower cover.

[0020] Preferably, the outer diameter of the outer ring is smaller than the diameter of the upper cover, and the end surface of the upper cover shields the contact area between the magnetic grid and the outer ring plate of the lower cover.

[0021] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0022] The steering wheel angle torque measuring instrument provided by the utility model can be respectively accommodated on the upper cover and the lower cover through the copper ring and the copper brush. When the upper cover and the lower cover rotate relative to each other, the copper ring and the copper brush can transmit the torque sensor data. At the same time, the angle data information during the test is recorded with the help of the relative movement of the upper cover and the lower cover. The effect of synchronous measurement of torque and angle is achieved by using structural optimization and integration, thereby improving the detection efficiency of the equipment and reducing the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a structural schematic diagram of a steering wheel angle torque measuring instrument provided by the present invention.

[0024] Figure 2 The utility model is a schematic diagram of the top view of the steering wheel angle torque measuring instrument.

[0025] Figure 3 The utility model provides a schematic structural diagram of the upper cover of a steering wheel angle torque measuring instrument facing the lower cover end surface.

[0026] Figure 4The utility model is a structural schematic diagram of a steering wheel angle torque measuring instrument provided by the present invention, with the middle lower cover facing the upper cover end surface.

[0027] Figure 5 The utility model provides a schematic diagram of the copper surface structure of a conductive slip ring of a steering wheel angle torque measuring instrument.

[0028] Figure 6 The utility model provides a schematic structural diagram of a conductive slip ring copper brush surface of a steering wheel angle torque measuring instrument.

[0029] Description of reference numerals:

[0030] 1. Torque sensor; 2. Upper cover; 21. Outer ring; 22. Inner ring; 3. Lower cover; 31. Magnetic read head; 32. Junction box; 4. Magnetic grid; 51. Copper ring; 52. Copper brush; 6. Bearing; 7. Bearing inner ring. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] The present invention provides a steering wheel angle torque measuring instrument. Figures 1-6 As shown, the steering wheel angle torque measuring instrument includes:

[0034] Upper cover 2 and lower cover 3. The lower end surface of the upper cover 2 is provided with an outer ring 21 and an inner ring 22. The outer wall of the outer ring 21 abuts against the inner wall of the lower cover 3. The torque sensor 1 is arranged at the center of the upper cover 2. The end surface of the upper cover 2 away from the lower cover 3 is provided with a clamp for fixing the steering wheel. Here, the torque sensor 1 and the clamp adopt existing technical equipment. The clamp is mainly connected to the upper cover 2 by a bolt structure. The inner ring 7 has one end surface connected to the inner ring 22. The outer wall of the inner ring 7 is provided with a bearing 6. The inner ring 7 is connected to the inner wall of the lower cover 3 via the bearing 6.

[0035] The lower cover 3 is fixed to a reference surface, which is configured according to the needs of the test environment to ensure that the lower cover 3 does not rotate synchronously with the upper cover 2. The upper cover 2 fixes the steering wheel with a clamp. When the steering wheel rotates, the conductive slip rings provided between the upper cover 2 and the lower cover 3 transmit power and signals.

[0036] In the present application, the lower cover 3 is fixed on the reference plane, and the steering wheel is assembled on the upper cover 2. The upper cover 2 slides relative to the lower cover 3 with the help of the bearing 6 and the bearing inner ring 7. The conductive slip ring includes a copper ring 51 and a copper brush 52. The copper brush 52 is set on the upper cover 2 and the copper brush 52 is set on the lower cover 3. During the rotation process, the copper ring 51 and the copper brush 52 come into contact with each other.

[0037] Here, the torque sensor 1 and the fixture are conventional devices. The fixture is connected to the upper cover 2 mainly by a bolt structure. The upper cover 2 acts as a device platform for the torque sensor 1. The copper brush 52 is electrically connected to the torque sensor 1. The torque information during the steering wheel rotation is obtained by the conductive slip ring in conjunction with the torque sensor 1. The conductive slip ring is used to power the torque sensor 1.

[0038] The outer wall of the outer ring 21 is also provided with a magnetic grating 4. The magnetic grating 4 is made of soft material with adhesive backing and is attached to the outer edge of the upper cover. The magnetic grating 4 moves with the upper cover 2. The circumference of the magnetic grating 4 is 352mm and the magnetic pitch is 5mm. It is equipped with a 5-100um resolution read head. The finished product is set to a 10um resolution, so each 10um represents 0.01°.

[0039] The outer edge of the lower cover 3 is provided with an outer ring plate, and the outer ring 21 is in contact with the outer ring plate on the outer edge of the lower cover 3 through the magnetic grid 4; the outer ring plate provides shielding for the outer ring 21;

[0040] The outer edge of the outer ring plate is provided with a junction box 32, and the junction box 32 is provided with a magnetic reading head 31. During the test, the driver turns the test steering wheel to drive the upper cover 2 to rotate together, and the upper cover 2 and the lower cover 3 generate relative motion. In this process, the magnetic reading head 31 and the magnetic grid 4 generate relative motion. The magnetic reading head 31 collects the changes in magnetic strength and converts the magnetic signal into a square wave electrical signal, and outputs the signal and inputs the power through the cable and the external socket. The angle data is obtained under the action of the magnetic reading head 31 and the magnetic grid 4. The junction box 32 and the magnetic reading head 31 are both existing technologies.

[0041] The above-mentioned angle measurement component and torque sensor 1 help the steering wheel angle torque measuring instrument to obtain the ability of simultaneous angle and torque measurement;

[0042] As a preferred implementation in this embodiment, the copper ring 51 is provided on the end surface of the upper cover 2 facing the lower cover 3 , and the copper ring 51 is located between the outer ring 21 and the inner ring 22 ;

[0043] The copper brush 52 is provided on the end surface of the lower cover 3 facing the upper cover 2, and the copper brush 52 is located between the outer ring plate of the lower cover 3 and the bearing 6;

[0044] The copper ring 51 and the copper brush 52 are in contact with each other, and the copper ring 51 is electrically connected to the torque sensor 1; the copper brush 52 is electrically connected to the junction box 32, and the junction box 32 collects all data in a centralized manner; this application is only a data acquisition device, and the back end of the junction box 32 is also connected to a computer for data analysis; the data display and analysis equipment is prior art and will not be described in detail here;

[0045] The bearing inner ring 7 is fixedly connected to the inner ring 22 of the upper cover 2 by bolts;

[0046] In this embodiment, the copper ring 51 and the copper brush 52 can be respectively accommodated on the upper cover 2 and the lower cover 3. When the upper cover 2 and the lower cover 3 rotate relative to each other, the copper ring 51 and the copper brush 52 can transmit the rotation data of the torque angle during the rotation process. By designing the outer ring 21 and the inner ring 22 of the upper cover 2, the copper ring 51 and the copper brush 52 provide a signal transmission function for the torque sensor 1.

[0047] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A steering wheel angle torque measuring instrument, characterized in that: include: An upper cover and a lower cover, wherein the lower end surface of the upper cover is provided with an outer ring and an inner ring; the outer wall of the outer ring abuts against the inner wall of the lower cover; a torque sensor is provided at the center of the upper cover, and a conductive slip ring is provided between the upper cover and the lower cover; A bearing inner ring, one end surface of which is connected to the inner ring, an outer wall of which is provided with a bearing, and the bearing inner ring is connected to the inner wall of the lower cover via the bearing; The upper cover and the lower cover are further provided with a rotation angle measurement component, and the rotation angle measurement component is respectively arranged on the upper cover and the lower cover; The upper cover fixes the steering wheel through a clamp. When the steering wheel rotates, the upper cover rotates along with the steering wheel, and the lower cover remains fixed. The torque sensor and the angle measurement component are used to record the rotation state between the upper cover and the lower cover.

2. A steering wheel angle torque measuring instrument according to claim 1, characterized in that: The rotation angle measurement assembly includes a magnetic grid and a magnetic reading head; The magnetic grid is located on the outer wall of the outer ring and abuts against the inner wall of the lower cover; A junction box is also provided on the outer edge of the lower cover. The magnetic reading head is arranged in the junction box and extends into the inner wall of the lower cover to contact and connect with the magnetic grid.

3. A steering wheel angle torque measuring instrument as claimed in claim 2, characterized in that: The conductive slip ring includes a copper ring and a copper brush; The copper ring is arranged on the end surface of the upper cover facing the lower cover, and the copper ring is located between the outer ring and the inner ring to form an independent chamber; The copper brush is arranged on the end surface of the lower cover facing the upper cover, and the copper brush is located between the outer ring plate of the lower cover and the bearing; When the upper cover and the lower cover are assembled together, the copper ring and the copper brush are in contact and connected with each other.

4. A steering wheel angle torque measuring instrument as claimed in claim 3, characterized in that: The positions of the copper ring and the copper brush correspond to each other.

5. The steering wheel angle torque measuring instrument according to claim 4, characterized in that: The bearing inner ring is fixedly connected to the upper inner ring of the upper cover by bolts.

6. The steering wheel angle torque measuring instrument according to claim 5, characterized in that: The end surface of the upper cover away from the lower cover is provided with a clamp for fixing the steering wheel.

7. The steering wheel angle torque measuring instrument according to claim 6, characterized in that: The outer diameter of the outer ring is smaller than the diameter of the upper cover, and the end surface of the upper cover shields the contact area between the magnetic grid and the outer ring plate of the lower cover.

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