Automobile steering wheel turning angle sensing device

Abstract

The utility model provides an automobile steering wheel turning angle sensing device, and relates to the technical field of automobile accessories. A transmission frame is arranged above the rear end of the limiting frame, a transmission shaft is rotationally connected to the upper portion of the front end of the transmission frame, the middle front end of the transmission shaft is rotationally connected to the front end of the interior of the limiting frame, and the middle front end of the transmission shaft is sleeved with a sensing wheel. Through meshing transmission among the transmission belt B, the sensing wheel and the auxiliary wheel, the maintenance frequency and difficulty are greatly reduced, frequent oil injection is not needed, the use cost and the maintenance workload are reduced, time and cost are saved for a user, and meanwhile the risk of precision reduction caused by the problems of load concentration, tooth clamping gaps and the like in the gear meshing process is effectively avoided. The problems that in the actual transmission process of an existing steering wheel angle sensor, oil injection needs to be maintained when multiple gears are meshed, transmission loads exist in the meshing process, meanwhile, tooth clamping gaps are likely to exist in gear meshing, and precision is insufficient after long time are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, more specifically, especially relates to a steering wheel steering angle sensing device. BACKGROUND

[0002] In the current flourishing development of modern automobile industry, the control performance and safety of automobile are always the key attention field of research and development, and the accurate perception of steering wheel steering angle plays a decisive role in realizing the two key performance indicators.

[0003] The application number CN201720894393.4 discloses a kind of automobile steering wheel steering angle sensor, by sensor box, CPU connecting port and fixed shaft constitute, the sensor box includes box cover and box body, the box cover is equipped with shaft sleeve ring, fixed column, the fixed column is equipped with stabilizing ring, the box body is equipped with main gear, first gear and second gear, the main gear is embedded in shaft sleeve ring, main gear is connected with first gear and second gear with meshing tooth, first gear and second gear are connected with meshing tooth.The fixed shaft is cross-shaped, and one end of the fixed shaft is fixedly connected with the box cover, a screw hole is formed in the outer edge of the box cover, and the screw hole is fixed with the box body by a screw.The setting of the stabilizing ring of steel material, due to steel material, high temperature resistance, friction resistance, etc., the damage caused by the shaking looseness of the steering wheel steering angle sensor is stabilized, the rotating shaft of the steering wheel is stabilized, and the accuracy of the steering wheel rotation is ensured.

[0004] Based on the above patent search and the understanding of the application of the existing automobile steering wheel steering angle sensing, the current steering wheel steering angle sensor usually adopts a mechanical structure of three gears to measure the steering angle and the number of turns, the large gear rotates with the steering column, and the two small gears are fixed on the vehicle body with the sensor shell and do not rotate with the steering wheel. The two small gears collect the steering angle of the steering wheel, and the absolute steering angle of the steering wheel is obtained by calculation. However, in the actual transmission process, multiple gear meshing needs to be maintained and oiled, and there is transmission load in the meshing process. At the same time, the gear meshing is easy to have tooth clashing gap, which will cause insufficient precision after a long time. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of automobile steering wheel steering angle sensing device to solve the problem that the existing steering wheel steering angle sensor needs to be maintained and oiled in the actual transmission process of multiple gear meshing, and there is transmission load in the meshing process. At the same time, the gear meshing is easy to have tooth clashing gap, which will cause insufficient precision after a long time.

[0006] The technical scheme adopted by the utility model is:

[0007] The utility model provides a kind of automobile steering wheel angle sensing device, including limiting frame;The rear end of the limiting frame is provided with transmission frame above position, the front end of transmission frame is rotatably connected with transmission shaft, the middle front end of transmission shaft is rotatably connected in the inside front end of limiting frame, transmission shaft's middle front end position is sleeved with sensing wheel, sensing wheel is engaged in the inside upper end position of transmission belt B, the inside lower end of limiting frame is fixedly installed with mounting bracket, torque sensor is installed in the inside of mounting bracket, the front end of torque sensor is rotatably provided with auxiliary wheel, auxiliary wheel is engaged in the inside lower end position of transmission belt B, and the rear end of torque sensor is provided with integrated circuit board.

[0008] According to an embodiment of the utility model, the front end of the transmission frame is provided with a booster, and the front end of the booster is sleeved with a transmission belt A inside the lower position.

[0009] According to an embodiment of the utility model, the inside upper position of the transmission belt A is sleeved with a transmission shaft, and the booster is located in the inside position of the transmission shaft.

[0010] According to an embodiment of the utility model, the booster is located above the integrated circuit board, and the bottom of the integrated circuit board is fixedly installed in the inside lower position of the limiting frame.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the transmission structure, the multi-tooth gear engagement design prone to problems is abandoned, the engagement transmission between the transmission belt B and the sensing wheel and the auxiliary wheel of the device greatly reduces the maintenance frequency and difficulty, frequent oiling is not required, the use cost and maintenance workload are reduced, the user saves time and cost, and the precision decline risk caused by load concentration, tooth gap and other problems in the gear engagement process is effectively avoided.

[0013] 2. The transmission belt B transmission has better flexibility, can adapt to a certain degree of installation error and running impact, ensures the stability and durability of transmission, ensures that the sensing precision of steering wheel angle can be reliably guaranteed from the beginning, and maintains stability in the long-term use process, and lays a solid foundation for accurate vehicle control.

[0014] 2. The transmission shaft drives the sensing wheel to rotate, the rotation state of the sensing wheel is transmitted to the auxiliary wheel through the transmission belt B, the torque sensor senses the torque change of the auxiliary wheel in real time, converts it into an electrical signal and transmits it to the integrated circuit board, so the integrated circuit board only needs to set up an area receiving the torque sensor progressive unit, saving space. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the automobile steering wheel angle sensing device of the utility model overhead structure schematic view.

[0016] Figure 2 Figure 1 is a left view structural schematic diagram of the automobile steering wheel rotation angle sensing device of the present application.

[0017] Figure 3 Figure 1 is a left view structural schematic diagram of the automobile steering wheel rotation angle sensing device of the present application.

[0018] Figure 4 Figure 1 is a left view structural schematic diagram of the automobile steering wheel rotation angle sensing device of the present application.

[0019] In the figure, the correspondence between the component names and the figure numbers is as follows:

[0020] 1, limit frame; 101, transmission frame; 102, booster; 103, transmission shaft; 104, transmission belt A; 105, sensing wheel; 106, transmission belt B; 2, mounting frame; 201, torque sensor; 202, integrated circuit board; 203, auxiliary wheel. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of the present application.

[0022] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the common meanings thereof by those of ordinary skill in the art to which the present application belongs. The similar words such as "one", "an" or "the" and the like used in the patent application specification and claims of the present application do not represent the quantity limitation, but represent the existence of at least one. The similar words such as "include" or "contain" and the like mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents. The similar words such as "connect" or "connected" and the like are not limited to the physical or mechanical connection, but can include the electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object is changed, the relative positional relationship can also be changed accordingly.

[0023] The implementation manners of the present application will be described in further detail below in combination with the drawings and embodiments.

[0024] Embodiment:

[0025] As shown in the accompanying drawings Figure 1 to the accompanying drawingsFigure 4 As shown:

[0026] The utility model provides a kind of automobile steering wheel rotation angle sensing device, including limit frame 1;The rear end upper position of limit frame 1 is provided with transmission frame 101, the front end upper position of transmission frame 101 is rotatably connected with transmission shaft 103, the middle front end position of transmission shaft 103 is rotatably connected in the inside front end position of limit frame 1, the middle front end position of transmission shaft 103 is sleeved with sensing wheel 105, sensing wheel 105 is engaged in the inside upper end position of transmission belt B 106, the inside lower position of limit frame 1 is fixedly installed with mounting frame 2, torque sensor 201 is installed in mounting frame 2, the front end of torque sensor 201 is rotatably provided with auxiliary wheel 203, auxiliary wheel 203 is engaged in the inside lower position of transmission belt B 106, the rear end position of torque sensor 201 is provided with integrated circuit board 202.

[0027] Wherein, the front end middle position of transmission frame 101 is provided with booster 102, the front end pivot sleeve of booster 102 is in the inside lower position of transmission belt A 104, the inside upper position of transmission belt A 104 is sleeved with transmission shaft 103, booster 102 is located in the inside position of transmission shaft 103, booster 102 is located in the upper position of integrated circuit board 202, and integrated circuit board 202 is fixedly installed in the inside lower position of limit frame 1, the application of booster 102 is transmitted to transmission shaft 103 by transmission belt A 104, and it is convenient to pass through transmission belt A 104 to transmission shaft 103 Action force transmission steering wheel action reduces weight.

[0028] When using:

[0029] When driver rotates steering wheel, the rotation of steering wheel is transmitted to transmission shaft 103 by a series of transmission, transmission shaft 103 drives sensing wheel 105 to rotate, the rotation state of sensing wheel 105 is transmitted to auxiliary wheel 203 by transmission belt B 106, and torque sensor 201 senses the torque change of auxiliary wheel 203 in real time, and converts it into electrical signal transmission to integrated circuit board 202.

[0030] Integrated circuit board 202 amplifies, filters, analog-digital converts and processes the received signal, calculates the accurate rotation angle of steering wheel, and transmits data to the electronic control unit of vehicle, and the electronic control unit adjusts the related parameters such as vehicle steering assist size and wheel steering angle according to steering wheel rotation angle information, to realize accurate steering control.

[0031] While the application has been described with reference to the above embodiment, it will be understood by those skilled in the art that various changes can be made and equivalents can be substituted for elements thereof without departing from the scope of the application as defined in the appended claims. Although the specification contains many specific implementation details, these should not be construed as limiting the scope of the application but merely as illustrating particular features. The scope of the application should be limited by the appended claims and their equivalents, rather than by the description preceding them.

Claims

1. A steering wheel angle sensing device for a vehicle, characterized by: The application relates to a torque sensor, which comprises a limiting frame (1), a transmission frame (101) arranged above the rear end of the limiting frame (1), a transmission shaft (103) rotatably connected to the front end of the transmission frame (101), the middle front end of the transmission shaft (103) being rotatably connected to the inner front end of the limiting frame (1), a sensing wheel (105) sleeved with the middle front end of the transmission shaft (103), the sensing wheel (105) being engaged with the inner upper end of a transmission belt B (106), a mounting frame (2) fixedly arranged at the inner lower end of the limiting frame (1), a torque sensor (201) arranged in the mounting frame (2), an auxiliary wheel (203) arranged at the front end of the torque sensor (201), the auxiliary wheel (203) being engaged with the inner lower end of the transmission belt B (106), and an integrated circuit board (202) arranged at the rear end of the torque sensor (201).

2. The steering wheel angle sensing device of claim 1, wherein: A booster (102) is arranged at the front end of the transmission frame (101) and the front end rotating shaft of the booster (102) is sleeved with the inner lower end of a transmission belt A (104).

3. The steering wheel angle sensing device of claim 2, wherein: The transmission shaft (103) is sleeved with the inner upper end of the transmission belt A (104) and the booster (102) is arranged in the inner position of the transmission shaft (103).

4. The steering wheel angle sensing device of claim 3, wherein: The booster (102) is arranged above the integrated circuit board (202) and the bottom of the integrated circuit board (202) is fixedly arranged at the inner lower end of the limiting frame (1).

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