Steering wheel angle sensor measuring structure

Abstract

The utility model relates to the technical field of automobile electronic stabilization systems, in particular to a steering wheel angle sensor measuring structure which comprises a large gear, a middle gear and a small gear. A hollow fixing groove matched with a steering wheel main shaft is reserved in the large gear. The middle gear and the small gear are independently meshed with the large gear. The large gear, the middle gear and the small gear are all distributed on the same horizontal plane, so that the gear transmission stability and accuracy are ensured, and transmission errors caused by dislocation or inclination of the gears are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of steering wheel angle sensor measurement structures of automobile electronic stability system technical field. BACKGROUND

[0002] With the high-speed development of new energy vehicles, and the development of automobile technology to integration, informationization, intelligent, steering wheel angle sensor as a basic, necessary vehicle sensor, plays a very important role in the field of modern automobile industry. Steering wheel angle sensor is equipped on basic every vehicle, for detecting the angle of vehicle steering, angular velocity, provides real-time steering data for vehicle ECU, judges vehicle state.

[0003] Steering wheel angle sensor requires stable and reliable steering data output, and reasonable design of gear tooth ratio can effectively improve the measurement range of steering angle, to ensure the stability of steering angle data output. However, the steering wheel angle sensor in the prior art still has deficiencies in the aspects of angle measurement range and angle data output stability. Specifically, the existing gear tooth ratio design often cannot simultaneously consider the width of the measurement angle range and the stability of the angle data output.

[0004] Narrow measurement angle range will result in the sensor being unable to accurately capture data when steering at a large angle, affecting the performance of the vehicle control system. Unstable angle data output may cause misjudgment of the vehicle electronic control unit, thereby affecting driving safety. In addition, the existing steering wheel angle sensor structure design also needs to be improved, and how to optimize the sensor structure to improve installation convenience and improve measurement accuracy needs to be solved. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of steering wheel angle sensor measurement structure and angle sensor to solve the above-mentioned technical problems of the gear tooth ratio design often cannot simultaneously consider the width of the measurement angle range and the stability of the angle data output in the prior art.

[0006] The technical scheme for solving the above technical problems of the utility model is as follows: a kind of steering wheel angle sensor measurement structure, including large gear, middle gear and pinion;The hollow fixing groove adapted to the steering wheel main shaft is reserved in the large gear;The middle gear and pinion are separately engaged with the large gear.

[0007] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0008] Further, the large gear, middle gear and pinion are distributed on the same horizontal plane.

[0009] Further, the gear tooth ratio of the large gear, middle gear and pinion is 46:26:24.

[0010] Further, the inner wall of the hollow fixing groove of the large gear is provided with a plurality of guide protrusions.

[0011] Further, the inner wall of the hollow fixing groove of the large gear is provided with a plurality of guide protrusions.

[0012] Further, the bottom surface of the middle gear and the pinion gear is formed with a circular protruding rib for limiting the rotation path, and the top surface is uniformly provided with a magnet and a magnet support.

[0013] Further, the inner wall of the hollow fixing groove of the large gear is provided with a plurality of guide protrusions.

[0014] Further, the transmission part is provided with a positioning groove reserved near the side of the steering wheel main shaft, and a positioning rib axially slidable relative to the steering wheel main shaft is further formed outside the transmission part.

[0015] Further, the large gear is further provided with a buckle for clamping the steering wheel main shaft.

[0016] The utility model also provides a kind of corner sensor, including main casing, steering wheel main shaft and as described steering wheel corner sensor measurement structure;

[0017] The large gear, the middle gear and the pinion gear are all installed in the main casing, and the steering wheel main shaft penetrates the hollow fixing groove and is in driving connection with the large gear.

[0018] And, the corner sensor provided by the utility model has at least the following beneficial effects compared with prior art:

[0019] Improve transmission stability and accuracy: the large gear, the middle gear and the pinion gear are all distributed on the same horizontal plane, which ensures the stability and accuracy of gear transmission, and reduces transmission error caused by misplacement or inclination between gears.

[0020] Broaden the measurement angle range and improve stability: through reasonable gear ratio design (46:26:24), the scheme effectively broadens the measurement range of steering wheel corner, and improves the stability of angle data output, so that the sensor can more accurately capture the change of steering wheel corner.

[0021] Enhance connection strength and positioning function: the guide protrusions and guide grooves provided on the inner wall of the hollow fixing groove of the large gear not only increase the contact area and connection strength with the steering wheel main shaft, but also provide additional positioning and guiding functions, to ensure the stability of the large gear during rotation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model.

[0023] Figure 2 For the utility model Figure 1 The enlarged view of A in the middle;

[0024] Figure 3 For the utility model another angle structure schematic view;

[0025] Figure 4 For the utility model corner sensor structure schematic view.

[0026] In the drawing, the component list represented by each sign is as follows:

[0027] 1, the gear wheel; 2, the gear; 3, the pinion; 4, the transmission part; 4.1, the positioning groove; 4.2, the positioning rib; 5, the buckle; 6, the circular protruding rib; 2.1, the circular protruding rib; 2.2, the magnet; 2.3, the magnet support; 1.1, the guide protrusion; 1.2, the guide slot; 100, the main shell; 200, the steering wheel main shaft. Specific implementation

[0028] The principles and features of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and not used to limit the scope of the utility model.

[0029] It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, it can also be detachably connected, and it can also be an integral structure. For ordinary skilled in the art, the specific meaning of such terms in this patent can be understood according to the specific circumstances.

[0030] As Figures 1-3 The utility model discloses a steering wheel corner sensor measurement structure, including gear wheel 1, gear 2 and pinion 3, the hollow fixed groove that is reserved in gear wheel 1 is adapted with the steering wheel main shaft, gear 2 and pinion 3 are engaged with gear wheel 1 separately.

[0031] The hollow fixed groove reserved in gear wheel 1 is adapted with the steering wheel main shaft and is connected, realizes the transmission of steering input, gear 2 and pinion 3 are separately engaged with gear wheel 1, form gear transmission system, and the rotation of gear is converted to the rotation movement of steering wheel's corner, and then the rotation angle or the number of turns of gear is measured to accurately calculate the rotation angle of steering wheel.

[0032] As an implementation mode, the gear wheel 1, the gear 2 and the pinion 3 are distributed with the same horizontal plane.

[0033] As an implementation mode, the gear number ratio of the gear wheel 1, the gear 2 and the pinion 3 is 46:26:24.

[0034] As an implementation form, the inner wall of the hollow fixing groove of the large gear 1 is provided with a plurality of guide protrusions 1.1.

[0035] Specifically, the inner wall of the hollow fixing groove of the large gear 1 is provided with a plurality of guide grooves 1.2; the guide protrusions 1.1 and the guide grooves 1.2 are uniformly distributed in cross.

[0036] The large gear 1, the medium gear 2 and the small gear 3 are all distributed on the same horizontal plane, ensuring the stability and accuracy of the gear transmission. At the same time, the gear number ratio of the large gear 1, the medium gear 2 and the small gear 3 is designed as 46:26:24, through reasonable gear number ratio distribution, the measurement angle range can be widened and the stability of angle data output can be improved. In addition, the inner wall of the hollow fixing groove of the large gear 1 is provided with a plurality of guide protrusions 1.1 and guide grooves 1.2, and the two are uniformly distributed in cross. This design not only increases the contact area and connection strength of the large gear 1 and the steering shaft, but also provides additional positioning and guiding functions, ensuring that the large gear 1 can remain stable during rotation, thereby improving the reliability and accuracy of the entire sensor measurement structure.

[0037] As an implementation form, the bottom surface of the medium gear 2 and the small gear 3 is formed with a circular protruding rib 2.1 for limiting the rotation path, and the top surface is provided with a magnet 2.2 and a magnet bracket 2.3.

[0038] This structure is used to limit the rotation path of the gear, ensuring that the gear can rotate smoothly along the predetermined trajectory during transmission, avoiding unnecessary shaking or deviation, thereby improving the accuracy and stability of the transmission. At the same time, the top surface of the medium gear 2 and the small gear 3 is provided with a magnet 2.2 and a magnet bracket 2.3. This design allows the gear to generate a changing magnetic field when rotating, which can non-contact measure the rotation angle or number of turns of the gear through interaction with the magnetic sensitive elements such as Hall elements inside the sensor, and then accurately calculate the steering angle. This non-contact measurement method not only improves the accuracy and reliability of the measurement, but also reduces mechanical wear and prolongs the service life of the sensor.

[0039] As an implementation form, the inner wall of the hollow fixing groove of the large gear 1 is also provided with a transmission part 4 for connecting with the steering shaft transmission.

[0040] Specifically, the transmission part 4 is provided with a positioning groove 4.1 near the steering shaft side, and the outer part of the transmission part 4 is also formed with a positioning rib 4.2 which can slide axially relative to the steering shaft.

[0041] Specifically, the large gear 1 is also provided with a buckle 5 for clamping the steering shaft.

[0042] In order to ensure that the transmission part 4 and the steering wheel main shaft can be accurately aligned and stably connected, the transmission part 4 is provided with a positioning groove 4.1 on the side close to the steering wheel main shaft, which makes the transmission part 4 easily match the positioning structure of the steering wheel main shaft during installation, achieving quick and accurate positioning. In addition, the transmission part 4 is also formed with a positioning rib 4.2 that can slide axially relative to the steering wheel main shaft, which not only provides additional connection stability, but also allows the transmission part 4 to slide axially to a certain extent during installation or disassembly to adapt to different installation requirements or tolerance ranges. At the same time, the large gear 1 is also provided with a buckle 5, which is used to further secure the steering wheel main shaft and ensure that the connection between the large gear 1 and the steering wheel main shaft is more stable and reliable. These designs work together to enable the steering wheel angle sensor measurement structure to achieve efficient and stable transmission connection with the steering wheel main shaft, thereby improving the accuracy and reliability of the measurement.

[0043] As shown in Figure 4 The utility model discloses also designs a kind of angle sensor, including main casing 100, steering wheel main shaft 200 and steering wheel angle sensor measurement structure.

[0044] The large gear 1, the gear 2 and the pinion 3 are all installed in the main casing 100, and the steering wheel main shaft 200 penetrates the hollow fixing groove and is in transmission connection with the large gear 1.

[0045] Ensure that the rotational movement of the steering wheel can be accurately and efficiently transmitted to the gear system in the measurement structure. Through this design, the angle sensor can measure the steering angle in real time and accurately, providing key data support for the steering control and electronic stability system of the vehicle.

[0046] It should be noted that in this paper, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0047] While the preferred embodiments of the application have been described, those skilled in the art will recognize that the application can be practiced with modification and alteration within the spirit and scope of the application. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive. The scope of the application is indicated by the appended claims, rather than by the foregoing description.

[0048] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims, the application can be practiced otherwise than as specifically described.

Claims

1. A steering wheel angle sensor measurement structure characterized by, It comprises a large gear (1), a middle gear (2) and a small gear (3); the large gear (1) is provided with a hollow fixing groove adapted to the steering wheel main shaft; the middle gear (2) and the small gear (3) are separately engaged with the large gear (1).

2. The steering wheel angle sensor measurement structure according to claim 1, characterized in that, The large gear (1), the middle gear (2) and the small gear (3) are distributed on the same horizontal plane.

3. The steering wheel angle sensor measurement structure according to claim 1, characterized in that, The gear number ratio of the large gear (1), the middle gear (2) and the small gear (3) is 46:26:

24.

4. The steering wheel angle sensor measurement structure according to claim 1, characterized by, The inner wall of the hollow fixing groove of the large gear (1) is provided with a plurality of guide protrusions (1.1).

5. The steering wheel angle sensor measurement structure according to claim 4, characterized in that, The inner wall of the hollow fixing groove of the large gear (1) is provided with a plurality of guide protrusions (1.1).

6. The steering wheel angle sensor measurement structure according to claim 1, characterized in that, The bottom surface of the middle gear (2) and the small gear (3) is formed with a circular protruding rib (2.1) for limiting the rotation path, and the top surface is provided with a magnet (2.2) and a magnet support (2.3).

7. The steering wheel angle sensor measurement structure according to claim 1, characterized in that, The inner wall of the hollow fixing groove of the large gear (1) is further provided with a transmission part (4) for transmission connection with the steering wheel main shaft.

8. The steering wheel angle sensor measurement structure according to claim 7, characterized in that The transmission part (4) is provided with a positioning groove (4.1) near the side of the steering wheel main shaft, and the outer part of the transmission part (4) is further formed with a positioning rib (4.2) which can slide axially relative to the steering wheel main shaft.

9. The steering wheel angle sensor measurement structure according to claim 1, characterized in that, The large gear (1) is further provided with a buckle (5) for clamping the steering wheel main shaft.

10. A corner sensor, characterized by It comprises a main shell (100), a steering wheel main shaft (200) and the steering wheel rotation angle sensor measuring structure as claimed in any one of claims 1-9. The large gear (1), the middle gear (2) and the small gear (3) are all installed in the main shell (100), and the steering wheel main shaft (200) penetrates through the hollow fixing groove and is in transmission connection with the large gear (1).

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