Eddy current angle sensor signal testing device for motor

Abstract

An eddy current angle sensor signal testing device for a motor comprises a mounting rack I, a lifting assembly, a buffer assembly, a probe quick-release assembly, a sensor fixing assembly and a rotation driving assembly, the lifting assembly is arranged at the upper end of the mounting rack I, and the lifting end is provided with the probe quick-release assembly through the buffer assembly; the sensor fixing assembly is arranged on the mounting rack I and located below the probe quick-release assembly, and the rotation driving assembly is arranged below the sensor fixing assembly. During working, due to the fact that the buffer assembly is arranged, when the probe is in contact with a welding spot, the probe is prevented from being damaged due to excessive force under the action of a spring in the buffer assembly, and when the probe is damaged, due to the fact that the probe quick disassembly assembly is arranged, the probe is convenient to disassemble and assemble, and the probe is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the field of eddy current sensor debugging, in particular to an eddy current angle sensor signal testing device for a motor. Background Art

[0002] An eddy-current angle sensor uses the eddy current effect to measure rotational angles. By generating an alternating magnetic field around the sensor coil, eddy currents are generated in the conductor when it comes into close proximity with the object being measured (typically a conductive material). These eddy currents in turn affect the sensor's magnetic field. By detecting these changes in the magnetic field, the sensor can accurately calculate the object's rotational angle. With its high precision, non-contact nature, and fast response, it is widely used in industrial automation, robotics, aerospace, and other fields.

[0003] Publication No. CN106404533A discloses a solder joint detection method. The solder joint detection system includes a housing, a front cover, a rear cover, a probe, a pressure sensor, an alarm, a control system, a transmission rod, and a pressure block. The pressure sensor and the alarm are respectively connected to the control system for communication.

[0004] The above-mentioned prior art detects the quality of solder joints by using a probe. However, when the probe contacts the solder joint, it is easy to damage the probe due to excessive force. At the same time, when the probe is damaged, the assembly relationship between the probe and the mounting component is not convenient for replacement. Utility Model Content

[0005] The purpose of the present utility model is to provide a signal testing device for an eddy current angle sensor for a motor, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A signal testing device for an eddy current angle sensor for a motor, comprising a mounting frame I, a lifting assembly, a buffer assembly, a probe quick-release assembly, a sensor fixing assembly, and a rotation drive assembly, wherein:

[0008] The lifting assembly is arranged at the upper end of the mounting frame I and a probe quick-release assembly is provided at the lifting end through a buffer assembly. The sensor fixing assembly is arranged on the mounting frame I and is located below the probe quick-release assembly. A rotation drive assembly is provided below the sensor fixing assembly.

[0009] Preferably, the buffer assembly includes a fixed sleeve, a spring, a movable sleeve and a mounting plate, the fixed sleeve is arranged on the lifting part of the lifting assembly, the movable sleeve is arranged inside the fixed sleeve through the spring, and the other end of the fixed sleeve is provided with a mounting plate.

[0010] Preferably, the probe quick-release assembly includes a mounting sleeve, a nut switch, a fastening part and a probe, the mounting sleeve is fixedly mounted on the mounting plate and passes through the mounting plate, one end of the nut switch is provided with an internal thread and the other end is provided with a blocking part, the outer cylindrical surface of the mounting sleeve is provided with an external thread and is threadedly connected to the nut switch, the fastening part is an elastic sleeve, the fastening part is movably arranged inside the mounting sleeve through a limit key, and the other end is a locking part, the locking part is arranged inside the nut switch and the outer diameter of the locking part is larger than the inner diameter of the through hole of the nut switch blocking part, the probe passes through the mounting sleeve, the nut switch and the fastening part and is locked by the fastening part.

[0011] Preferably, the lifting assembly includes a cylinder and a movable plate, the cylinder is arranged on the mounting frame I and is provided with a movable plate at the telescopic end, the movable plate is movably arranged on the mounting frame I, and the end of the movable sleeve is connected to the movable plate.

[0012] Preferably, the sensor fixing assembly includes a mounting frame II, a limit key and a limit baffle. The mounting frame II is arranged on the mounting frame I. The mounting frame II is provided with a limit key and a limit baffle.

[0013] Preferably, the rotary drive assembly is a motor, and the motor is arranged on the mounting frame I.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model discloses a signal testing device for an eddy current angle sensor for a motor. During operation, a buffer component is provided so that when the probe contacts a welding point, the spring in the buffer component can prevent the probe from being damaged due to excessive force. When the probe is damaged, the probe quick-release component is provided to facilitate disassembly and installation of the probe, thereby facilitating replacement of the probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the buffer assembly in the present utility model;

[0018] Figure 3 It is a partial three-dimensional schematic diagram of the probe quick-release assembly in the present utility model;

[0019] Figure 4 for Figure 1 Schematic diagram of the middle section A;

[0020] Figure 5 for Figure 1 Schematic diagram of part B in the middle.

[0021] In the figure: 1 mounting frame I, 2 lifting assembly, 3 buffer assembly, 4 probe quick release assembly, 5 sensor fixing assembly, 6 rotation drive assembly, 21 cylinder, 22 movable plate, 31 fixed sleeve, 32 spring, 33 movable sleeve, 34 mounting plate, 41 mounting sleeve, 42 nut switch, 43 fastening part, 44 probe, 51 mounting frame II, 52 limit key, 53 limit baffle, 61 motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example:

[0024] See also Figures 1 to 5 , the utility model provides a technical solution:

[0025] A signal testing device for an eddy current angle sensor for a motor includes a mounting frame 1, a lifting assembly 2, a buffer assembly 3, a probe quick-release assembly 4, a sensor fixing assembly 5, and a rotation drive assembly 6, wherein:

[0026] The lifting assembly 2 is arranged at the upper end of the mounting frame Ⅰ1 and is provided with a probe quick-release assembly 4 at the lifting end through a buffer assembly 3. The probe quick-release assembly 4 is used to secure the probe. The sensor fixing assembly 5 is arranged on the mounting frame Ⅰ1 and is located below the probe quick-release assembly 4. The sensor fixing assembly 5 is used to secure the sensor. A rotation drive assembly 6 is provided below the sensor fixing assembly 5. The rotation drive assembly 6 is used to drive the rotor in the eddy current angle sensor to rotate.

[0027] As a preferred embodiment, the buffer assembly 3 includes a fixed sleeve 31, a spring 32, a movable sleeve 33, and a mounting plate 34. The fixed sleeve 31 is mounted on the lifting portion of the lifting assembly 2. The movable sleeve 33 is movably mounted within the fixed sleeve 31 by the spring 32. The mounting plate 34 is mounted on the other end of the fixed sleeve 31. When the mounting plate 34 is subjected to an upward compressive force, the mounting plate 34 drives the fixed sleeve 31 toward the upper end of the movable sleeve 33. Since the movable sleeve 33 is movably mounted within the fixed sleeve 31 by the spring 32, the upward pressure exerted by the mounting plate 34 is buffered.

[0028] As a preferred embodiment, the probe quick-release assembly 4 includes a mounting sleeve 41, a nut switch 42, a fastening portion 43 and a probe 44. The mounting sleeve 41 is fixedly mounted on the mounting plate 34 and passes through the mounting plate 34. The nut switch 42 is provided with an internal thread at one end and a blocking portion at the other end. The outer cylindrical surface of the mounting sleeve 41 is provided with an external thread and is threadedly connected to the nut switch 42. The fastening portion 43 is an elastic sleeve and the inner hole diameter of the elastic sleeve when not under force is the same as the outer diameter of the probe 44. The fastening portion 43 is movably arranged inside the mounting sleeve 41 through a limit key, and the other end is a locking portion. The locking portion is arranged inside the nut switch 42 and the outer diameter of the locking portion is larger than the inner diameter of the through hole of the blocking portion of the nut switch 42. When the nut switch 42 moves it close to the mounting sleeve 41, the inside of the blocking portion contacts the fastening portion 43, which is used to push the fastening portion 43 to shrink toward the inside of the mounting sleeve 41. The probe 44 passes through the mounting sleeve 41, the nut switch 42 and the fastening portion 43 and is locked by the fastening portion 43. The outer diameter of one end of the fastening portion 43 is the same as the inner diameter of the mounting sleeve 41, and the other end is a locking portion. The locking portion has a circumferential array of through holes on its circular surface, allowing the inner diameter of the locking portion to shrink. Rotating the nut switch 42 causes it to approach the mounting sleeve 41, while the nut switch 42 pushes the fastening portion 43 into the mounting sleeve 41. Under the action of pressure, the elastic portion of the fastening portion 43 within the nut switch 42 shrinks and continuously approaches the probe 44. The friction between the fastening portion 43 and the probe 44 achieves the purpose of locking the probe 44. When the probe 44 is locked, the nut switch 42 presses against the end of the fastening portion 43, continuously securing the probe 44. One end of the probe 44 is used to contact the solder joint on the stator PCB board, and the other end is connected to a signal line to transmit detection information to the host computer.

[0029] As a preferred embodiment, the lifting assembly 2 includes a cylinder 21 and a movable plate 22. Cylinder 21 is mounted on mounting frame Ⅰ1 and has movable plate 22 at its telescopic end. Movable plate 22 is movably mounted on mounting frame Ⅰ1 via a linear bearing. The end of a movable sleeve 33 is connected to movable plate 22. Lifting assembly 2 is used to raise and lower probe 44 on probe quick-release assembly 4 via movable plate 22.

[0030] As a preferred embodiment, the sensor fixing assembly 5 includes a mounting bracket II 51, a mounting key 52, and a limit baffle 53. The mounting bracket II 51 is mounted on the mounting bracket I 1, and is provided with the mounting key 52 and the limit baffle 53. The limit baffle 53 is rotatably mounted on the mounting bracket II 51 to press the eddy current angle sensor 100.

[0031] As a preferred embodiment, Figure 5As shown, the eddy current angle sensor 100 is fixed inside the mounting frame II 51 through the mounting key 52 , and the eddy current angle sensor 100 fixed inside the mounting frame II 51 is pressed by the limiting baffle 53 .

[0032] As a preferred embodiment, the rotary drive assembly 6 is a motor 61, which is mounted on the mounting frame Ⅰ 1. The motor 61 is used to drive the rotor in the eddy current angle sensor to rotate, so that the induction coil on the stator of the eddy current angle sensor generates an induced voltage under the action of electromagnetic induction.

[0033] The working principle of the present invention is as follows: when working, first the probe 44 is passed through the mounting sleeve 41, the nut switch 42 and the fastening portion 43, and then the nut switch 42 is rotated to make it close to the mounting sleeve 41. At the same time, the nut switch 42 pushes the fastening portion 43 into the mounting sleeve 41. Under the action of pressure, the fastening portion 43 in the nut switch 42 causes the elastic portion of the fastening portion 43 to contract and continuously approach the probe 44. Under the action of friction between the fastening portion 43 and the probe 44, the probe 44 is locked to achieve the purpose of fixing the probe 44. Then, the electric key 52 is used to fix the probe 44. The eddy current angle sensor is fixed to the inside of mounting bracket II 51. The limit baffle 53 is then moved to press the eddy current angle sensor. The motor 61 is then started to rotate the rotor of the eddy current angle sensor, causing the induction coil on the stator of the eddy current angle sensor to generate an induced voltage under the action of electromagnetic induction. The cylinder 21 is then started. Cylinder 21 drives probe 44 toward the solder point on the PCB of the eddy current angle sensor stator through movable plate 22 and buffer assembly 3. The induction signal generated by the eddy current rotor and PCB stator is transmitted to the host computer via the signal line connected to probe 44. The host computer determines whether the sensor is faulty based on the induction signal output by the host computer.

[0034] When the probe 44 contacts the solder joint on the stator PCB board, if the force is not well controlled, the probe 44 continues to press down. At this time, the fixed sleeve 31 will shrink toward the upper end of the movable sleeve 33. Since the movable sleeve 33 is movably arranged inside the fixed sleeve 31 by the spring 32, the downward force of the probe 44 will be buffered, which can avoid damage to the probe due to excessive force.

[0035] When the probe needs to be replaced, rotate the nut switch 42, and the nut switch 42 will move away from the installation sleeve 41. The fastening part 43 in the nut switch 42 will pop out of the installation sleeve 41 under the action of the elastic restoring force. At this time, the friction between the fastening part 43 and the probe 44 will decrease. At this time, the probe 44 can be pulled out, and the above process of installing the probe 44 is repeated to achieve the purpose of replacing the probe 44.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A signal testing device for an eddy current angle sensor for a motor, comprising a mounting frame I (1), a lifting assembly (2), a buffer assembly (3), a probe quick-release assembly (4), a sensor fixing assembly (5) and a rotation drive assembly (6), characterized in that: The lifting assembly (2) is arranged on the upper end of the mounting frame I (1), and a probe quick-release assembly (4) is provided at the lifting end through a buffer assembly (3); the sensor fixing assembly (5) is arranged on the mounting frame I (1) and is located below the probe quick-release assembly (4); and a rotation drive assembly (6) is provided below the sensor fixing assembly (5).

2. The eddy current angle sensor signal testing device for a motor according to claim 1, characterized in that: The buffer assembly (3) comprises a fixed sleeve (31), a spring (32), a movable sleeve (33) and a mounting plate (34); the fixed sleeve (31) is arranged at the lifting portion of the lifting assembly (2); the movable sleeve (33) is movably arranged inside the fixed sleeve (31) by means of the spring (32); and the other end of the fixed sleeve (31) is provided with a mounting plate (34).

3. The eddy current angle sensor signal testing device for a motor according to claim 2, characterized in that: The probe quick-release assembly (4) comprises a mounting sleeve (41), a nut switch (42), a fastening portion (43) and a probe (44); the mounting sleeve (41) is fixedly mounted on the mounting plate (34) and passes through the mounting plate (34); one end of the nut switch (42) is provided with an internal thread and the other end is provided with a blocking portion; the outer circumferential surface of the mounting sleeve (41) is provided with an external thread and is threadedly connected to the nut switch (42); the fastening portion (43) is an elastic sleeve; the fastening portion (43) is movably arranged inside the mounting sleeve (41) through a limit key; the other end is a locking portion; the locking portion is arranged inside the nut switch (42) and the outer diameter of the locking portion is larger than the inner diameter of the through hole of the blocking portion of the nut switch (42); the probe (44) passes through the mounting sleeve (41), the nut switch (42) and the fastening portion (43) and is locked by the fastening portion (43).

4. The signal testing device for an eddy current angle sensor for a motor according to claim 2, characterized in that: The lifting assembly (2) comprises a cylinder (21) and a movable plate (22). The cylinder (21) is arranged on the mounting frame I (1) and is provided with a movable plate (22) at the telescopic end. The movable plate (22) is movably arranged on the mounting frame I (1), and the end of the movable sleeve (33) is connected to the movable plate (22).

5. The signal testing device for an eddy current angle sensor for a motor according to claim 4, characterized in that: The sensor fixing assembly (5) comprises a mounting frame II (51), a mounting key (52) and a limit baffle (53); the mounting frame II (51) is arranged on the mounting frame I (1); the mounting frame II (51) is provided with a mounting key (52); and the mounting frame II (51) is provided with a limit baffle (53).

6. The signal testing device for an eddy current angle sensor for a motor according to claim 5, characterized in that: The rotary drive assembly (6) is a motor (61), and the motor (61) is arranged on the mounting frame I (1).

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