Angle sensor checking device

Abstract

The utility model discloses an angle sensor checking device which comprises a power-assisted motor, an angle sensor, a first gear, a second gear and a precision graduator, an output shaft of the power-assisted motor is fixedly connected with the axis of the first gear, and the output shaft of the power-assisted motor penetrates out of the first gear to be connected with the angle sensor. The first gear is meshed with the second gear, and the precision graduator is fixedly connected with the axis of the second gear. The angle sensor collects the rotation angle of the power-assisted motor, and the power-assisted motor drives the first gear and the second gear to rotate synchronously, so that the precision graduator connected with the second gear rotates, and the scale value of the precision graduator is read. And comparing whether a difference value between an angle value corresponding to the scale value and a display value of the angle sensor is within an expected required range, and if the difference value is within the expected required range, indicating that the angle sensor meets the expected use requirement. The angle sensor checking device is simple in structure, low in cost and convenient to use, and can conveniently and quickly check and verify the angle sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of steering gears, in particular to an angle sensor verification device. Background Art

[0002] An electric power steering system (EPS) drives a motor by using an electronic control unit according to driving states detected by a vehicle speed sensor, an angle sensor and a torque sensor, thereby ensuring stability during steering and providing a quick return force, and thus allowing a driver to drive a vehicle safely. An angle sensor is a device that outputs an electrical signal in proportion to the rotation angle of a steering shaft. Its derived functions (such as soft stop protection, active return, automatic parking, etc.) require identifying the limit position of the steering angle and actively limiting and precisely controlling it. Therefore, verifying the accuracy of the angle sensor has become an urgent problem to be solved. Summary of the Utility Model

[0003] Aiming at the technical problem that the accuracy of the angle sensor needs to be verified, the utility model provides an angle sensor verification device, which has a simple structure, low cost and convenient use, effectively verifies the credibility of the angle sensor, and can quickly and conveniently verify the angle sensor.

[0004] The technical solution adopted by the utility model is as follows: an angle sensor verification device includes an assist motor, an angle sensor, a first gear, a second gear and a precision scale. The output shaft of the assist motor is fixedly connected to the axis center of the first gear, and the output shaft of the assist motor passes through the first gear and is connected to the angle sensor. The first gear meshes with the second gear, and the precision scale is fixedly connected to the axis center of the second gear.

[0005] Optionally, it further includes a base. The housing of the assist motor is installed inside the base. The precision scale includes a transmission rod, a housing and a scale disk. One end of the transmission rod is fixedly connected to the second gear coaxially, the other end of the transmission rod is fixedly connected to the scale disk, the scale disk rotates and is rotatably connected to the housing, and the housing is fixedly connected to the base.

[0006] Optionally, the base includes a top plate, a support plate and a bottom plate. One end of the support plate is connected to the top plate, the other end of the support plate is connected to the bottom plate. The housing of the assist motor is installed on the side of the top plate facing the bottom plate, and the output shaft of the assist motor passes through the top plate and is sequentially connected to the first gear and the angle sensor, or the housing of the assist motor is connected to the bottom plate.

[0007] Optionally, the base is provided with a first through hole and a second through hole. The output shaft of the assist motor passes through the first through hole and is connected to the first gear, and the transmission rod passes through the second through hole and is connected to the scale disk.

[0008] Optionally, a magnifying glass is mounted on the base, and the magnifying glass is arranged corresponding to the dial.

[0009] Optionally, the base is provided with a mounting plate, the mounting plate is provided with a third through hole arranged corresponding to the dial, and the magnifying glass is mounted inside the third through hole.

[0010] Optionally, the mounting plate is provided with a first screw hole for a screw to pass through, and the base is provided with a second screw hole for a screw to pass through.

[0011] Optionally, the second screw hole communicates with the second through hole, the housing is provided with a limiting block extending into the second through hole, and the screw abuts against the limiting block.

[0012] The beneficial effects of the present utility model are as follows: The rotation ratio of the second gear to the first gear is 10:1 (that is, when the second gear rotates 10 circles, it drives the first gear to rotate 1 circle), and the resolution of the conversion angle is such that each scale is 0.72 degrees / grid, which is converted to 0.072 degrees / grid through the ratio. The angle sensor collects the rotation angle of the assist motor. The assist motor drives the first gear and the second gear to rotate synchronously, causing the precision scale connected to the second gear to rotate. Read the scale value of the precision scale, and compare whether the difference between the angle value corresponding to the scale value and the display value of the angle sensor is within the expected requirement range. For example, when it is 10 scales on the angle scale, check whether the device angle display value is 0.72 degrees (when the dial rotates 10 grids, it is 7.2 degrees, which is converted to 0.72 degrees through the 10:1 gear). If the difference is within the expected requirement range, it indicates that the angle sensor meets the expected usage requirements. This angle sensor verification device has a simple structure, low cost, and is easy to use, effectively verifying the credibility of the angle sensor and being able to quickly and conveniently verify the angle sensor. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the angle sensor verification device proposed by an embodiment of the present utility model;

[0014] Figure 2 It is an exploded view of the angle sensor verification device proposed by an embodiment of the present utility model.

[0015] The marks in each drawing are: 1, assist motor; 2, angle sensor; 3, first gear; 4, second gear; 5, precision scale; 6, base; 7, transmission rod; 8, housing; 9, dial; 10, top plate; 11, support plate; 12, bottom plate; 13, magnifying glass; 14, mounting plate; 15, first screw hole; 16, second screw hole; 17, second through hole; 18, limiting block; Detailed Embodiment

[0016] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] As Figure 1 and 2 shown, this embodiment discloses an angle sensor verification device, which includes a boosting motor 1, an angle sensor 2, a first gear 3, a second gear 4, and a precision scale 5. The output shaft of the boosting motor 1 is fixedly connected to the axis center of the first gear 3, and the output shaft of the boosting motor 1 passes through the first gear 3 and is connected to the angle sensor 2. The first gear 3 meshes with the second gear 4, and the precision scale 5 is fixedly connected to the axis center of the second gear 4. The rotation ratio of the second gear 4 to the first gear 3 is 10:1 (that is, when the second gear 4 rotates 10 circles, it drives the first gear 3 to rotate 1 circle), and the resolution of the converted angle is such that each scale is 0.72 degrees / grid, which is converted to 0.072 degrees / grid through the ratio. The angle sensor 2 collects the rotation angle of the boosting motor 1. The boosting motor 1 drives the first gear 3 and the second gear 4 to rotate synchronously, causing the precision scale 5 connected to the second gear 4 to rotate. Read the scale value of the precision scale 5, and compare whether the difference between the angle value corresponding to this scale value and the displayed value of the angle sensor is within the expected requirement range. For example, if it is 10 scales on the angle scale, check whether the device angle display value is 0.72 degrees (when the scale disk 9 rotates 10 grids, it is 7.2 degrees, which is converted to 0.72 degrees through the 10:1 gear). If the difference is within the expected requirement range, it indicates that the angle sensor 2 meets the expected usage requirements. This angle sensor 2 verification device has a simple structure, low cost, and is easy to use, effectively verifying the credibility of the angle sensor 2 and being able to quickly and conveniently verify the angle sensor 2.

[0018] In this embodiment, as Figure 1 shown, it further includes a base 6. The housing 8 of the boosting motor 1 is installed inside the base 6. The precision scale 5 includes a transmission rod 7, a housing 8, and a scale disk 9. One end of the transmission rod 7 is fixedly connected to the second gear 4 coaxially, and the other end of the transmission rod 7 is fixedly connected to the scale disk 9. The scale disk 9 rotates and is rotationally connected to the housing 8, and the housing 8 is fixedly connected to the base 6. There is a gapless connection between the output shaft of the boosting motor 1 and the angle sensor 2. The first gear 3 drives the scale disk 9 to rotate through the second gear 4 and the transmission rod 7. The precision scale 5 is a prior art.

[0019] As Figure 1As shown, the base 6 includes a top plate 10, a support plate 11 and a bottom plate 12. One end of the support plate 11 is connected to the top plate 10, and the other end of the support plate 11 is connected to the bottom plate 12. The housing 8 of the assist motor 1 is mounted on the side of the top plate 10 facing the bottom plate 12. The output shaft of the assist motor 1 passes through the top plate 10 and is sequentially connected to the first gear 3 and the angle sensor 2, or the housing 8 of the assist motor 1 is connected to the bottom plate 12.

[0020] As Figure 2 shown, the base 6 is provided with a first through hole and a second through hole 17. The output shaft of the assist motor 1 passes out of the first through hole and is connected to the first gear 3. The transmission rod 7 passes through the second through hole 17 and is connected to the dial 9. The first through hole and the second through hole 17 are both provided on the top plate 10.

[0021] As Figure 1 shown, the base 6 is mounted with a magnifying glass 13, and the magnifying glass 13 is arranged corresponding to the dial 9. By magnifying the reading scale value of the dial 9 through the magnifying glass 13, the human reading error is reduced. The base 6 is provided with a mounting plate 14, and the mounting plate 14 is provided with a third through hole corresponding to the dial 9. The magnifying glass 13 is mounted inside the third through hole.

[0022] As Figure 2 shown, the mounting plate 14 is provided with a first screw hole 15 for a screw to pass through, and the base 6 is provided with a second screw hole 16 for a screw to pass through. The second screw hole 16 and the second through hole 17 are both provided on the top plate 10. The mounting plate 14 is mounted on the top plate 10 of the base 6 by screws sequentially passing through the first screw and the second screw hole 16. The second screw hole 16 communicates with the second through hole 17. The housing 8 is provided with a limiting block 18 extending into the second through hole 17, and the screw abuts against the limiting block 18. The transmission rod 7 passes through the limiting block 18 and is connected to the dial 9. The screw abuts the limiting block 18 inside the second through hole 17, and the precision scale 5 is mounted on the base 6.

[0023] It can be understood that the specific embodiments described above are only used to explain the relevant utility model, rather than limiting the utility model. In addition, it should be noted that for the convenience of description, only the parts related to the utility model are shown in the drawings. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradiction or conflict. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, directly or indirectly applied in other related technical fields, is equally included in the protection scope of the present utility model.

Claims

1. An angle sensor verification device, characterized in that, It includes an assist motor, an angle sensor, a first gear, a second gear and a precision scale. The output shaft of the assist motor is fixedly connected to the axis center of the first gear, and the output shaft of the assist motor passes through the first gear and is connected to the angle sensor. The first gear meshes with the second gear, and the precision scale is fixedly connected to the axis center of the second gear.

2. The angle sensor verification device according to claim 1, characterized in that It further includes a base. The housing of the assist motor is installed inside the base. The precision scale includes a transmission rod, a housing and a scale disk. One end of the transmission rod is fixedly connected to the second gear coaxially, and the other end of the transmission rod is fixedly connected to the scale disk. The scale disk rotates and is rotationally connected to the housing, and the housing is fixedly connected to the base.

3. The angular sensor verification device according to claim 2, wherein The base includes a top plate, a support plate and a bottom plate. One end of the support plate is connected to the top plate, and the other end of the support plate is connected to the bottom plate. The housing of the assist motor is installed on the side of the top plate facing the bottom plate, and the output shaft of the assist motor passes through the top plate and is sequentially connected to the first gear and the angle sensor, or the housing of the assist motor is connected to the bottom plate.

4. The angle sensor verification device according to claim 2, characterized in that The base is provided with a first through hole and a second through hole. The output shaft of the assist motor passes out through the first through hole and is connected to the first gear, and the transmission rod passes through the second through hole and is connected to the scale disk.

5. The angle sensor verification device according to claim 4, characterized in that, A magnifying glass is installed on the base, and the magnifying glass is arranged corresponding to the scale disk.

6. The angle sensor verification device according to claim 5, wherein The base is provided with a mounting plate, and the mounting plate is provided with a third through hole corresponding to the scale disk, and the magnifying glass is installed inside the third through hole.

7. The angle sensor verification device according to claim 6, wherein The mounting plate is provided with a first screw hole for a screw to pass through, and the base is provided with a second screw hole for a screw to pass through.

8. The angle sensor verification device according to claim 7, characterized in that The second screw hole communicates with the second through hole, and the housing is provided with a limiting block extending into the second through hole, and the screw abuts against the limiting block.

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