An adjustable high-precision hall sensor rotation speed testing device

Abstract

The utility model relates to sensor testing equipment technical field discloses a kind of adjustable high-precision hall sensor rotating speed testing device, the device includes work shell, slidable workbench and rotator, its core is in setting adjustment mechanism and fixed mechanism;Adjustment mechanism is driven by motor one component linkage such as rotating disc, power transmission ring, driven plate and sliding rod, the linear motion of workbench is accurately converted to the rotary motion of motor, to realize the automatic high-precision adjustment of test interval between sensor one and rotator;Fixed mechanism is then through setting fixed ring, spring, arc plate, chuck and bidirectional circular table, realize clamping or separation using spring force driving arc plate and chuck, so as to be able to tool-free to sensor one Quick fixing and disassembly.The utility model solves the problem that the existing technology interval is inconvenient and sensor is cumbersome to assemble and disassemble by the above structure, with the effect of high adjustment precision, convenient assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of sensor testing equipment technology, and in particular to a high-precision Hall sensor rotation speed testing device with adjustable distance. Background Technology

[0002] Hall effect sensors, as a key speed measuring element, are widely used in many fields such as automobiles and industrial automation. The accuracy of their performance directly affects the stable operation of the entire system. To ensure their factory quality and operational reliability, rigorous speed testing is usually required during the manufacturing process.

[0003] During rotational speed testing, the test gap between the sensor probe and the rotating signal source (such as a magnet or gear) is a crucial parameter. The size of this gap directly affects the strength and signal-to-noise ratio of the magnetic field signal received by the sensor, thus determining its measurement accuracy and operational reliability. Different application scenarios have different requirements for the sensor's performance under different gaps; therefore, the ability to adjust this test gap is a fundamental function of the testing device.

[0004] However, existing testing equipment generally relies on manual operation when adjusting this testing gap. Operators usually need to first loosen the fixing bolts, manually push the clamp containing the sensor to roughly position it, then use measuring tools such as calipers to measure and confirm the position, and finally tighten the bolts again.

[0005] This purely manual adjustment method has obvious shortcomings: First, the adjustment process is cumbersome, requiring repeated steps of "loosening-moving-measuring-locking", resulting in low testing efficiency and failing to meet the needs of rapid testing in batches or under multiple operating conditions; Second, the manual positioning and locking process is difficult to guarantee high precision, and even small displacement errors and uneven locking forces will affect the accuracy and repeatability of the spacing, thereby directly affecting the reliability of the speed test results, making it very difficult to conduct high-precision performance evaluation of the sensor.

[0006] Therefore, this invention proposes a high-precision Hall sensor rotation speed testing device with adjustable distance to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems of existing adjustable-distance high-precision Hall sensor speed testing devices, such as the test gap relying on manual adjustment, cumbersome process, low accuracy, and difficulty in ensuring repeatability, this utility model aims to provide an adjustable-distance high-precision Hall sensor speed testing device with an improved structure that can effectively solve the above problems.

[0008] This utility model provides an adjustable distance high-precision Hall sensor speed testing device, including: a base plate, a working shell fixedly connected to the base plate, a worktable slidably connected inside the working shell, a second motor disposed on the base plate, a rotator drivenly connected to the second motor, and an adjustment mechanism.

[0009] The adjustment mechanism includes a drive assembly mounted on the working housing, as well as a turntable, a force transmission ring, a driven plate, and a sliding rod. The drive assembly includes a motor.

[0010] Furthermore, the output shaft of the first motor is fixedly connected to the turntable, the turntable is coaxially fixedly connected to the force transmission ring, the force transmission ring is driven to the driven plate to drive its movement, the driven plate is fixedly connected to one end of the sliding rod, and the other end of the sliding rod is fixedly connected to the worktable. Through this transmission structure combination, the rotational motion of the first motor is converted into the linear motion of the worktable, thereby driving the change in the distance between the sensor to be fixed and the rotator.

[0011] Preferably, the adjustment mechanism further includes a limiting plate, and the driven plate is slidably fitted within the limiting plate.

[0012] Preferably, the drive assembly further includes a support base, through which the motor is mounted, and the adjustment mechanism further includes a support frame, through which the drive assembly is fixed to the top of the working housing.

[0013] Preferably, the device further includes a fixing mechanism for detachably fixing a sensor to the worktable.

[0014] Preferably, the fixing mechanism includes a fixing ring, a spring, and an arc-shaped plate. The sensor is installed inside the fixing ring, the fixing ring is inserted into the worktable, and the spring and the arc-shaped plate are disposed between the inner wall of the worktable and the outer wall of the fixing ring. The spring is used to drive the arc-shaped plate to achieve locking of the fixing ring.

[0015] Preferably, the fixing mechanism further includes a locking head disposed on the outer wall of the fixing ring, and the arc-shaped plate is used to engage with the lower end face of the locking head to lock the fixing ring.

[0016] Preferably, the fixing mechanism further includes a bidirectional frustum disposed on the outer wall of the fixing ring, the bidirectional frustum being located below the locking head along the axial direction of the fixing ring, for pushing the arc-shaped plate open to release the locking when the fixing ring is pressed or pulled.

[0017] Preferably, the fixing mechanism further includes a support ring and a limiting ring, the support ring and the limiting ring being coaxially fixed to the inner wall of the worktable, and the spring ring being disposed on the outer periphery of the fixing ring, with its two ends respectively abutting against the support ring and the limiting ring.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problem in the prior art that the installation and removal of sensors requires tools, is cumbersome and time-consuming, by setting up a fixing mechanism that works in concert with a fixing ring, spring, arc plate, clamp, and bidirectional truncated cone. It achieves the technical effect of quickly fixing and removing sensors without tools, greatly improving the convenience and efficiency of testing work.

[0020] 2. This utility model, by setting up an adjustment mechanism that links a motor-driven turntable, a force transmission ring, a driven plate, and a sliding rod, accurately converts the rotational motion of the motor into the linear motion of the worktable. This solves the problems of manual adjustment of the test spacing, low precision, and difficulty in quantitative control in the prior art, and achieves the technical effect of automated and high-precision adjustment of the test spacing, which can meet the precision speed test requirements under different working conditions.

[0021] 3. This utility model integrates the adjustment mechanism and the quick-fixing mechanism into an integrated working shell and worktable, and is supplemented with a support frame, support base and other stable structures. This solves the problems of loose structure, poor component coordination and easy error caused by vibration during testing in existing testing devices. It achieves the technical effect of compact overall structure and stable and reliable operation, and provides a solid foundation for high-precision testing. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a high-precision Hall sensor rotation speed testing device with adjustable distance proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the motor of the adjustable-distance high-precision Hall sensor speed testing device proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the turntable structure of an adjustable-distance, high-precision Hall sensor rotation speed testing device proposed in this utility model;

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0026] Legend:

[0027] 1. Working shell; 2. Adjustment mechanism; 21. Support frame; 22. Drive assembly; 221. Support base; 222. Motor 1; 23. Turntable; 24. Force transmission ring; 25. Driven plate; 26. Limiting plate; 27. Sliding rod; 3. Worktable; 4. Fixing mechanism; 41. Support ring; 42. Limiting ring; 43. Spring; 44. Arc plate; 45. Fixing ring; 46. Clamp; 47. Double-sided frustum; 48. Sensor 1; 5. Base plate; 6. Motor 2; 7. Rotator. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example

[0030] Please refer to Figures 1 to 4 This utility model provides an adjustable-distance, high-precision Hall sensor rotation speed testing device, which aims to solve the problems of cumbersome sensor loading and unloading operations and difficulty in precisely adjusting the test spacing in existing Hall sensor rotation speed testing devices.

[0031] like Figure 1As shown, the adjustable-distance high-precision Hall sensor rotation speed testing device includes a base plate 5 and a working shell 1 fixedly connected to the base plate 5. The base plate 5 serves as a stable support for the entire device, while the working shell 1 houses and supports the internal moving components. A worktable 3 is slidably connected inside the working shell 1, and a fixing mechanism 4 for quickly loading and unloading the sensor 48 is provided on the worktable 3. A motor 6 is provided on the base plate 5, and a rotator 7 is driven to the output end of the motor 6. The device also includes an adjustment mechanism 2, which drives the worktable 3 to slide in a straight line inside the working shell 1, thereby achieving precise adjustment of the testing distance between the sensor 48 and the rotator 7. Specifically, the adjustment mechanism 2 includes components mounted on the working shell 1. The drive assembly 22 includes a motor 222 mounted on a support base 221. The drive assembly 22 is fixed to the top of the working shell 1 by a support frame 21. The adjustment mechanism 2 also includes a turntable 23, a force transmission ring 24, a driven plate 25, a limiting plate 26, and a sliding rod 27. The output shaft of the motor 222 is fixedly connected to the turntable 23. The turntable 23 is coaxially fixedly connected to the force transmission ring 24. The force transmission ring 24 is driven by the driven plate 25. The driven plate 25 is slidably fitted in the limiting plate 26. One end of the driven plate 25 is fixedly connected to the sliding rod 27, and the other end of the sliding rod 27 is fixedly connected to the worktable 3. Through this series of transmission relationships, the rotational motion of the motor 222 is finally converted into the linear reciprocating motion of the worktable 3.

[0032] To solve the above-mentioned technical problems, the core of the technical solution of this embodiment is that the adjustable distance high-precision Hall sensor rotation speed testing device also includes a fixing mechanism 4 for quickly fixing or removing the sensor 48, and the fixing mechanism 4 and the worktable 3 form a specific structural cooperation and connection relationship.

[0033] Please refer to the following carefully. Figure 1 , Figure 3 and Figure 4The core structure is described in detail below: The fixing mechanism 4 includes a fixing ring 45, a spring 43, an arc plate 44, a clamp 46, a bidirectional frustum 47, a support ring 41, and a limiting ring 42; the sensor 48 is installed inside the fixing ring 45, which is used to insert into the worktable 3; the outer wall of the fixing ring 45 is integrally formed with a clamp 46 and a bidirectional frustum 47 located below the clamp 46 along the axial direction of the fixing ring 45; the support ring 41 and the limiting ring 42 are coaxially fixed to the inner wall of the worktable 3, and the spring 43 and the arc plate 44 are disposed between the inner wall of the worktable 3 and the outer wall of the fixing ring 45. More specifically, the spring 43 is arranged around the outer periphery of the fixing ring 45, and its two ends abut against the support ring 41. Ring 41 and limiting ring 42 provide continuous elastic force and are effectively limited, while spring 43 also drives arc plate 44. In the assembled state, when fixing ring 45 is inserted into worktable 3, the clamp 46 on its outer wall will squeeze arc plate 44. After clamp 46 has completely passed arc plate 44, the rebound force of spring 43 pushes arc plate 44 back to its original position, so that it engages with the lower end face of clamp 46, thereby firmly locking fixing ring 45 together with sensor 48 inside it. When disassembling, pressing or pulling fixing ring 45 will cause bidirectional truncated cone 47 to push arc plate 44 open with its arc working surface to release the engagement state. This structure ensures that the installation and disassembly of sensor 48 can be carried out without any tools, which is convenient, efficient and reliable.

[0034] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0035] In one preferred embodiment, to ensure the stability and guiding accuracy of the driven plate 25, the adjusting mechanism 2 further includes a limiting plate 26, in which the driven plate 25 slides within the limiting plate 26. In another preferred embodiment, to achieve stable installation of the drive assembly 22, the drive assembly 22 further includes a support base 221, through which the motor 222 is mounted. The adjusting mechanism 2 also includes a support frame 21, through which the drive assembly 22 is fixed to the top of the working housing 1. In yet another preferred embodiment, to achieve reliable locking and convenient unlocking of the fixing ring 45, a locking head 4 is provided on the outer wall of the fixing ring 45 of the fixing mechanism 4. 6. The arc-shaped plate 44 is used to engage with the lower end face of the clamp 46 to lock the fixing ring 45. The outer wall of the fixing ring 45 is also provided with a bidirectional frustum 47. The bidirectional frustum 47 is located below the clamp 46 along the axial direction of the fixing ring 45 and is used to push the arc-shaped plate 44 open to release the engagement when the fixing ring 45 is pressed or pulled. As another preferred embodiment, in order to provide stable support and effective stroke limitation for the spring 43, the fixing mechanism 4 also includes a support ring 41 and a limiting ring 42. The support ring 41 and the limiting ring 42 are coaxially fixed to the inner wall of the worktable 3. The spring 43 is arranged around the outer periphery of the fixing ring 45, and its two ends abut against the support ring 41 and the limiting ring 42 respectively.

[0036] The implementation principle of this application embodiment is as follows: When adjusting the test spacing, the motor 222 in the drive assembly 22 is started. The motor 222 drives the turntable 23 and the force transmission ring 24, which is fixedly connected to it on the same axis, to rotate synchronously through its output shaft. The support frame 21 provides connection and support for the entire adjustment mechanism 2, and the support base 221 provides a stable installation foundation for the motor 222. When the force transmission ring 24 rotates, it drives the driven plate 25 to slide inside the limit plate 26. The sliding of the driven plate 25 is transmitted to the worktable 3 through the sliding rod 27 fixedly connected to it, thereby driving the worktable 3 and the sensor 48 fixed on it to perform precise linear motion inside the working shell 1. By controlling the rotation amount of the motor 222, the test spacing between the sensor 48 and the rotator 7 can be accurately adjusted, which solves the problem of inconvenient spacing adjustment and low accuracy in the prior art.

[0037] When fixing sensor 48, the fixing ring 45 containing sensor 48 is inserted into the worktable 3. The clamp 46 on the outer wall of the fixing ring 45 will squeeze the arc plate 44 to slide inside the worktable 3 and press the spring 43. During this process, the limiting ring 42 limits the sliding of the spring 43 to prevent it from being over-deformed. The support ring 41 is used to fix the position of the spring 43. When the clamp 46 slides past the lower end of the arc plate 44, the spring 43 returns to its original position and drives the arc plate 44 to clamp the fixing ring 45, thereby achieving stable fixing of sensor 48. When disassembling, press the fixing ring 45 down, and the bidirectional truncated cone 47 on its outer wall will squeeze the arc plate 44. Then, pull the fixing ring 45 up. The bidirectional truncated cone 47 will continue to squeeze the arc plate 44 through its own arc-shaped working surface, pushing the arc plate 44 out of the clamp 46, so that sensor 48 can be quickly removed. The entire fixing and disassembly process does not require additional tools, which solves the problem of cumbersome sensor loading and unloading in the prior art.

Claims

1. A high-precision Hall sensor rotation speed testing device with adjustable distance, comprising a base plate (5) and a working shell (1) fixedly connected to the base plate (5); a worktable (3) is slidably connected inside the working shell (1); the device further comprises a second motor (6) disposed on the base plate (5) and a rotator (7) drivenly connected to the second motor (6); characterized in that, The device further includes an adjustment mechanism (2), which is used to drive the worktable (3) to slide within the working shell (1) to adjust the distance between the sensor (48) to be fixed on the worktable (3) and the rotator (7); the adjustment mechanism (2) includes a drive assembly (22) mounted on the working shell (1), as well as a turntable (23), a force transmission ring (24), a driven plate (25) and a sliding rod (27); the drive assembly (22) includes a motor (222); the output shaft of the motor (222) is fixedly connected to the turntable (23), the turntable (23) is coaxially fixedly connected to the force transmission ring (24), the force transmission ring (24) is drivenly connected to the driven plate (25) to drive its movement, the driven plate (25) is fixedly connected to one end of the sliding rod (27), and the other end of the sliding rod (27) is fixedly connected to the worktable (3).

2. The adjustable-distance high-precision Hall sensor rotation speed testing device according to claim 1, characterized in that, The adjustment mechanism (2) further includes a limiting plate (26), and the driven plate (25) is slidably fitted within the limiting plate (26).

3. The adjustable-distance high-precision Hall sensor rotation speed testing device according to claim 1, characterized in that, The drive assembly (22) further includes a support base (221), through which the motor (222) is mounted; the adjustment mechanism (2) further includes a support frame (21), through which the drive assembly (22) is fixed to the top of the working shell (1).

4. The adjustable-distance high-precision Hall sensor rotation speed testing device according to claim 1, characterized in that, The device also includes a fixing mechanism (4) for detachably fixing the sensor (48) to the worktable (3).

5. The adjustable-distance high-precision Hall sensor rotation speed testing device according to claim 4, characterized in that, The fixing mechanism (4) includes a fixing ring (45), a spring (43) and an arc plate (44); the sensor (48) is installed in the fixing ring (45); the fixing ring (45) is inserted into the worktable (3); the spring (43) and the arc plate (44) are disposed between the inner wall of the worktable (3) and the outer wall of the fixing ring (45); the spring (43) is used to drive the arc plate (44) to achieve the snapping of the fixing ring (45).

6. The adjustable-distance high-precision Hall sensor rotation speed testing device according to claim 5, characterized in that, The fixing mechanism (4) further includes a locking head (46) disposed on the outer wall of the fixing ring (45); the arc plate (44) is used to engage with the lower end face of the locking head (46) to lock the fixing ring (45).

7. The adjustable-distance high-precision Hall sensor rotation speed testing device according to claim 6, characterized in that, The fixing mechanism (4) further includes a bidirectional frustum (47) disposed on the outer wall of the fixing ring (45). The bidirectional frustum (47) is located below the clamp head (46) along the axial direction of the fixing ring (45) and is used to push open the arc plate (44) to release the clamp when the fixing ring (45) is pressed or pulled.

8. The adjustable-distance high-precision Hall sensor rotation speed testing device according to claim 5, characterized in that, The fixing mechanism (4) further includes a support ring (41) and a limiting ring (42); the support ring (41) and the limiting ring (42) are coaxially fixed to the inner wall of the worktable (3), and the spring (43) is arranged around the outer periphery of the fixing ring (45), and its two ends abut against the support ring (41) and the limiting ring (42) respectively.

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