Motor reciprocating frequency measuring device and motor testing system

Abstract

The present disclosure provides a motor reciprocating frequency measuring device and a motor testing system. The motor reciprocating frequency measuring device comprises a rotating module capable of being circumscribed by a motor and reciprocating rotation under the driving of the motor; a swinging module with a fixed end and a swinging end, wherein the swinging end is in contact with an initial position on the notch of the rotating module in the initial state, and the swinging end is driven to reciprocate around the fixed end when the rotating module rotates and triggers the counting module when swinging to a predetermined position, and the swinging end returns to the initial position and stops swinging after the rotating module stops rotating; the counting module can count when triggered by the swinging module to obtain the number of swings of the swinging module, so as to obtain the reciprocating frequency of the motor through the number of swings of the swinging module.

Description

Technical Field

[0001] This disclosure relates to a motor reciprocating frequency measuring device and a motor testing system. Background Technology

[0002] With the development of medical technology and the widespread application of endoscopic technology, hysteroscopic surgery has also evolved, with the overall trend towards greater safety, non-invasive or minimally invasive procedures, and higher efficiency. Endoscopic power systems used in hysteroscopic surgery are suitable for trained gynecologists to perform procedures with the assistance of instruments such as hysteroscopes to remove lesions in uterine tissue, including submucosal fibroids and endometrial polyps.

[0003] In surgical resection of diseased soft tissue, the procedure primarily relies on a high-speed reciprocating shaving blade to remove the diseased soft tissue. Simultaneously, a negative pressure device suctions the removed soft tissue out through internal channels of the shaving blade and the shaving handpiece. The rotation of the shaving blade is driven by the shaving handpiece. The shaving handpiece includes a handle, with a shaving blade mounted at the front end of the handle. The shaving blade consists of a tubular outer blade and a tubular inner blade, located inside the tubular outer blade. The inner blade rotates at high speed, its hollow interior forming a suction channel. The handle is connected to a negative pressure suction source, thereby breaking up diseased soft tissues such as fibroids and endometrial polyps and suctioning them into an external storage bottle. The inner blade moves by reciprocating rotation at a certain frequency, driven by a motor. Because the motor can affect the resection effect of the shaving blade, relevant regulations require testing of the motor's reciprocating frequency, no-load reciprocating frequency, no-load speed, speed during the process of loading from no-load to rated load, and overload speed.

[0004] Chinese patent CN115824553 discloses a device and method for testing the impact resistance of an ultrasonic scissor bar, which measures the amplitude and reciprocating frequency of the working part of the ultrasonic scissor bar using a laser vibrometer. Chinese patent CN215180286U discloses a handheld magnetic induction speed and reciprocating frequency integrated tester, which receives the speed parameters of a low-voltage electric motor through a magnetic induction sensor to measure the rotational speed of the low-voltage electric motor. However, neither of these technologies can test whether the motor meets the relevant regulatory requirements. Summary of the Invention

[0005] To address at least one of the aforementioned technical problems, this disclosure provides a motor reciprocating frequency measuring device and a motor testing system.

[0006] According to a first aspect of this disclosure, a motor reciprocating frequency measuring device is provided, comprising:

[0007] The rotating module has a notch, which allows it to be connected to an external motor and rotate back and forth under the drive of the motor;

[0008] The swing module includes a swing end and a fixed end. The fixed end is fixed. In the initial state, the swing end is in contact with the initial position on the notch of the rotating module. When the rotating module rotates, the swing end is driven to swing back and forth around the fixed end and triggers the counting module when it swings to a predetermined position. After the rotating module stops rotating, the swing end returns to the initial position and stops swinging.

[0009] The counting module is capable of counting when triggered by the swing module to obtain the number of swings of the swing module, so as to obtain the reciprocating frequency of the motor through the number of swings of the swing module.

[0010] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the rotating module is a wheel, with a notch on one side and a motor connecting shaft at the center, which can be connected to the drive shaft of the motor to reciprocate and rotate with the reciprocating motion of the motor.

[0011] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the notch is an arc shape concave to the interior of the rotating module.

[0012] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the swing module includes: a telescopic rod, a fixed base, and a reset part. One end of the telescopic rod is formed as the swing end of the swing module, and the other end of the telescopic rod is movably fixedly disposed through the fixed base to form the fixed end of the swing module. The reset part is fixed on the fixed base and connected to the other end of the telescopic rod to drive the telescopic rod to reciprocate around the fixed base under the drive of the rotating module and control the telescopic rod to return to the initial position and stop swinging after the rotating module stops rotating.

[0013] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the telescopic rod is capable of extending and retracting perpendicular to the swing direction so that one end of the telescopic rod remains in contact with the surface of the rotating module during the reciprocating swing and after the swing stops.

[0014] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, one end of the telescopic rod is provided with a roller, and the roller is rotatably fixed to one end of the telescopic rod.

[0015] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the telescopic rod is provided with a protrusion for triggering the counting module when the telescopic rod swings to a predetermined position.

[0016] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the telescopic rod includes a rocker arm and a telescopic spring. The telescopic spring is fitted outside the rocker arm and can extend and retract along the length direction of the rocker arm to drive one end of the rocker arm to move in its length direction, thereby ensuring that one end of the rocker arm is always in contact with the rotating module.

[0017] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the reset part is a reset spring, which is installed in a fixed base and connected to the other end of the telescopic rod.

[0018] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the fixed base is an origin rotating base so that the other end of the telescopic rod can be rotatably fixed.

[0019] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the counting module includes a photoelectric sensor and a counter, the photoelectric sensor and the counter being electrically connected, the photoelectric sensor generating a switch control signal when it senses that the oscillating module has passed the predetermined position and providing it to the counter, the counter updating the count value in response to the switch control signal, the count value representing the number of oscillations of the oscillating module.

[0020] In some embodiments of the motor reciprocating frequency measuring device disclosed herein, the predetermined position includes a first position and a second position; the motor reciprocating frequency measuring device includes two counting modules, namely a first counting module and a second counting module, wherein the first counting module can be triggered when the swing module passes through the first position to count the number of swings of the swing module in the first direction, and the second counting module can be triggered when the swing module passes through the second position to count the number of swings of the swing module in the second direction.

[0021] According to a second aspect of this disclosure, a motor testing system is provided, comprising: a speed measuring device for measuring the motor speed and the aforementioned reciprocating frequency measuring device.

[0022] In some embodiments of the motor testing system disclosed herein, the speed measuring device includes: a turntable with a notch, capable of connecting to a motor and rotating under the drive of the motor; and a detection module for detecting the number of times the notch appears on the turntable to obtain the number of rotations of the turntable, thereby obtaining the motor speed through the number of rotations.

[0023] In some embodiments of the motor testing system disclosed herein, the load application device is further comprising: the load application device being used to adjust the load applied to the motor.

[0024] In some embodiments of the motor testing system disclosed herein, the upper limit of the load application device is adjustable.

[0025] In some embodiments of the motor testing system disclosed herein, the load application device includes a belt and a pulley; the belt is subjected to a constant force, the pulley is connected to the motor shaft of the motor and rotates as the motor rotates, and when the pulley rotates, the belt wraps around the pulley, causing the lever arm to increase, thereby increasing the load applied to the motor.

[0026] In some embodiments of the motor testing system disclosed herein, the load application device includes: a conical wheel connected to the motor shaft of the motor and rotating as the motor rotates; a pull rope, one end of which is fixed to the tip of the conical wheel, the pull rope being subjected to a constant force and winding around the conical wheel as it rotates, thereby increasing the lever arm and thus increasing the load applied to the motor.

[0027] In some embodiments of the motor testing system disclosed herein, the other end of the pull rope is connected to a slider, and the maximum load applied to the motor is adjusted by adjusting the position of the slider.

[0028] In some embodiments of the motor testing system disclosed herein, a current measuring device is further included, at least for measuring the load current of the motor at maximum load.

[0029] The motor reciprocating frequency measuring device provided in this disclosure can efficiently and accurately test the reciprocating frequency of motors used in applications such as endoscopic power systems for hysteroscopic surgery.

[0030] The motor testing system provided in this disclosure can efficiently and accurately test the reciprocating frequency and speed of motors used in endoscopic power systems for hysteroscopic surgery under various load conditions, such as no-load, no-load loaded to rated load, and overload. Attached Figure Description

[0031] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0032] Figure 1 This is a schematic diagram of the structure of a motor reciprocating frequency measuring device according to some embodiments of the present disclosure.

[0033] Figure 2 This is a structural schematic diagram of a motor reciprocating frequency measuring device in a non-operating state according to some embodiments of this disclosure.

[0034] Figure 3 This is a structural schematic diagram of the motor reciprocating frequency measuring device under working conditions according to some embodiments of this disclosure.

[0035] Figure 4 This is a schematic diagram of the structure of a motor testing system according to some embodiments of the present disclosure.

[0036] Figure 5 This is a schematic diagram of the structure of a motor testing system according to some embodiments of the present disclosure.

[0037] Figure 6 This is a schematic diagram of the structure of a motor testing system according to some other embodiments of the present disclosure.

[0038] Explanation of reference numerals in the attached figures

[0039] 10 Motor Measurement System

[0040] 20 motors

[0041] 100 Motor reciprocating frequency measuring device

[0042] 110 Rotating Module / Wheel

[0043] 120 Swing Module

[0044] 130 Counting Module

[0045] 130A First Counting Module

[0046] 130B Second Counting Module

[0047] 111 Notch

[0048] 112 Motor connecting shaft

[0049] 121 Telescopic pole

[0050] 1211 Joystick

[0051] 1212 Telescopic Spring

[0052] 1213 Protrusion

[0053] 122 Fixed base / origin rotating base

[0054] 123 Reset Part / Reset Spring

[0055] 124 rollers

[0056] 131 Photoelectric Counter

[0057] 132 counter

[0058] Speed ​​measuring device for 200 motor

[0059] 210 Detection Module

[0060] 220 turntable

[0061] Load application device for 300 motor

[0062] 300A load application device

[0063] 310A driver module

[0064] 320A slider

[0065] 330A pull rope

[0066] 340A conical wheel

[0067] 300B Load Application Device

[0068] 310B pulley

[0069] 320B with Detailed Implementation

[0070] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0071] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0072] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.

[0073] The use of crosshairs and / or shading in the accompanying drawings is generally used to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0074] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0075] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0076] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0077] Figure 1 This is a schematic diagram of the structure of a motor reciprocating frequency measuring device 100 according to one embodiment of this disclosure. Figure 1 As shown, the motor reciprocating frequency measuring device 100 of this embodiment may include: a rotation module 110, an oscillation module 120 and a counting module 130.

[0078] The rotating module 110 has a notch, and can be connected to an external motor 10 to reciprocate under the drive of the motor 10. The swing module 120 includes a swing end and a fixed end. The fixed end of the swing module 120 is fixed. In the initial state, the swing end of the swing module 120 abuts against the initial position on the notch of the rotating module 110. When the rotating module 110 rotates, the swing end of the swing module 120 is driven to reciprocate around its fixed end and triggers the counting module 130 when it swings to a predetermined position. After the rotating module 110 stops rotating, the swing end of the swing module 120 returns to the initial position and stops swinging. The counting module 130 can count when triggered by the swing module 120 to obtain the number of swings of the swing module 120, so as to obtain the reciprocating frequency of the motor 10 through the number of swings of the swing module 120.

[0079] Specifically, the rotation module 110 is connected to the motor 10 to be tested. The reciprocating motion of the motor 10 drives the rotation module 110 to reciprocate at the same frequency. When the rotation module 110 starts to rotate, the notch applies a force to the swing end of the swing module 120. The swing end of the swing module 120 will start to move under the drive of this force. Subsequently, under the combined action of the internal force of the swing module 120 (e.g., the buffer force provided by the reset part 123 and the internal stress generated by the extension and retraction of the telescopic rod 121) and the force provided by the rotation module 110, the swing end of the swing module 120 will reciprocate synchronously around its fixed end as the rotation module 110 reciprocates. During this reciprocating swing process, whenever the swing module 120 swings to a predetermined position, it will trigger the counting module 130 to count, thereby obtaining the number of swings of the swing module 120. The number of swings of the swing module 120 is the number of reciprocating rotations of the rotation module 110. The number of reciprocating rotations of the rotation module 110 can be used to directly obtain the number of reciprocating motions of the motor. In this way, the reciprocating frequency of the motor can be measured accurately and efficiently.

[0080] The motor reciprocating frequency measuring device 100 of this disclosure is applicable to various types of motors. Regardless of the amplitude of the motor's reciprocating motion or the high or low frequency of the motor, this disclosure embodiment can accurately and efficiently measure the frequency. In particular, this disclosure embodiment is especially suitable for testing the reciprocating frequency of high-frequency, low-amplitude motors used in endoscopic power systems for hysteroscopic surgery.

[0081] Figure 2 A schematic diagram of the structure of the motor reciprocating frequency measuring device 100 according to an embodiment of the present disclosure is shown. Figure 3 A schematic diagram of the working state of the motor reciprocating frequency measuring device 100 according to an embodiment of the present disclosure is shown.

[0082] See Figure 2 and Figure 3The rotating module 110 can be a rotating wheel 110. A notch 111 is provided on one side of the rotating wheel 110. A selected position on the surface of the notch 111 (e.g., the center or near the center of the notch 111) can be set as the initial position of the swing end of the swing module 120. A motor connecting shaft 112 is provided at the center of the rotating wheel 110. The motor connecting shaft 112 of the rotating wheel 110 can be connected to the drive shaft of a motor via, for example, a coupling. This allows for more accurate synchronization between the reciprocating motion of the motor and the reciprocating rotation of the rotating wheel 110, while minimizing energy loss and component wear during high-frequency motion. The reciprocating frequency of the rotating wheel 110 and the reciprocating frequency of the motor can be equal or in a fixed ratio, so that the reciprocating frequency of the motor can be accurately obtained by measuring the reciprocating frequency of the rotating wheel 110.

[0083] The notch 111 on one side of the rotating wheel 110 allows power to be supplied to the swing end of the swing module 120 through the interaction between the surface of the notch 111 and the swing end of the swing module 120 when the rotating wheel 110 starts to rotate. This drives the swing end of the swing module 120 to move, allowing it to oscillate back and forth around its fixed end as the rotating wheel 110 reciprocates. In specific applications, the notch 111 can be arc-shaped, square, or other various shapes. Preferably, the notch 111 can be made of... Figure 2 and Figure 3 The concave inner arc shape of the wheel 110 shown is designed to minimize friction between the rotating module 110 and the oscillating module 120 during movement, so that the reciprocating frequency can still be accurately and efficiently measured even when the motor is in high-frequency reciprocating motion. At the same time, it can also avoid problems such as heat generation and wear caused by frequent friction in high-frequency motion.

[0084] It should be noted that the size, dimensions, and specific position of the notch 111 on the rotating wheel 110 can be flexibly set as needed, as long as the notch 111 can drive the swing module 120 to swing back and forth with the reciprocating rotation of the rotating wheel 110.

[0085] See Figure 2 and Figure 3 The swing module 120 may include: a telescopic rod 121, a fixed base 122, and a reset part 123. One end of the telescopic rod is formed as the swing end of the swing module 120, and the other end of the telescopic rod is movably fixedly disposed through the fixed base 122 to form the fixed end of the swing module 120. The reset part 123 is fixed on the fixed base 122 and connected to the other end of the telescopic rod to drive the telescopic rod to swing back to the initial position.

[0086] In some embodiments, the fixed seat 122 may be, but is not limited to, a rotating seat at the origin. The other end of the telescopic rod can be rotatably fixed by the rotating seat at the origin, which reduces the friction between the other end of the telescopic rod and the fixed seat 122 during high-frequency reciprocating oscillation, thereby avoiding issues such as overheating and wear, improving the accuracy and sensitivity of the reciprocating frequency measuring device in measuring the reciprocating frequency of the high-frequency motor, and extending its service life.

[0087] In some embodiments, the reset part 123 may be, but is not limited to, a reset spring. The reset spring is installed in the fixed base 122 and connected to the other end of the telescopic rod to drive one end of the telescopic rod to reciprocate around its other end under the drive of the rotating module 110, and to control one end of the telescopic rod to return to its initial position and stop swinging after the rotating module 110 stops rotating. By using a reset spring as the reset part 123, a buffer force can be provided to the telescopic rod in the opposite direction to its swing direction and in magnitude that is positively correlated with its swing amplitude, so that one end of the telescopic rod can reciprocate around its other end under the drive of the rotating module 110 and automatically return to its initial position and stop swinging after the rotating module 110 stops rotating.

[0088] The swing amplitude of a telescopic pole refers to the distance between the current position of one end and the center position of the swing (e.g., the initial position of one end) during the reciprocating swing of one end around the other end.

[0089] Preferably, the return spring can be, but is not limited to, a spring capable of providing circumferential force to the telescopic rod, in order to further reduce friction between the return spring and the other end of the telescopic rod.

[0090] See Figure 2 and Figure 3 The telescopic rod 121 can extend and retract perpendicular to the swing direction so that one end of the telescopic rod 121 is always in contact with the surface of the rotating module 110, that is, one end of the telescopic rod 121 never detaches from the rotating wheel 110. The fact that one end of the telescopic rod 121 is always in contact with the surface of the rotating module 110 can mean that one end of the telescopic rod 121 can be in contact with the surface of the rotating module 110 under various conditions, such as during the swing of the telescopic rod 121, after the telescopic rod 121 stops swinging, when there is relative motion between the telescopic rod 121 and the rotating module 110, and when the telescopic rod 121 and the rotating module 110 are relatively stationary.

[0091] See Figure 2 and Figure 3The telescopic rod 121 can extend and retract along its length. Driven by the rotating wheel 110, the telescopic rod 121 reciprocates around the fixed base 122 along its width, simultaneously extending and retracting along its length, ensuring that one end of the telescopic rod 121 remains in contact with the surface of the rotating wheel 110. After the telescopic rod 121 stops swinging, one end returns to its initial position on the recess 111, and the telescopic rod 121 is compressed. The internal stress generated by this compression presses one end of the telescopic rod 121 against the surface of the recess 111. Thus, by extending and retracting along its length, the telescopic rod 121 ensures that one end remains in contact with the surface of the rotating module 110 during and after its reciprocating swing, without detaching from the rotating module 110.

[0092] See Figure 2 and Figure 3 As shown, the telescopic rod 121 may include a rocker arm 1211 and a telescopic spring 1212. The telescopic spring 1212 is fitted outside the rocker arm 1211 and can extend and retract along the length direction of the rocker arm 1211 to drive one end of the rocker arm 1211 to move in its length direction, so that one end of the rocker arm 1211 can always be in contact with the rotating module 110. One end of the rocker arm 1211 is one end of the telescopic rod 121, and the other end of the rocker arm 1211 is the other end of the telescopic rod 121.

[0093] See Figure 2 and Figure 3 A roller 124 can be installed at one end of the telescopic rod 121. The roller 124 can be rotatably fixed to one end of the telescopic rod 121. One end of the telescopic rod 121 and the roller 124 thereon form one end of the swing module 120. Thus, when the rotating wheel 110 starts to rotate, the interaction between its concave surface 111 and the roller 124 drives the roller 124. The roller 124 drives one end of the telescopic rod, and then the telescopic rod and the roller 124 at one end will swing back and forth around its other end as the rotating wheel 110 reciprocates. The rotatable roller 124 not only improves the flexibility of the swing module 120, but also further reduces the friction between the swing end of the swing module 120 and the rotating module 110 during high-speed movement.

[0094] For example, see Figure 2 and Figure 3 The roller 124 can be fixed to one end of the telescopic rod 121 by, for example, a bearing and bearing housing mating structure. The telescopic rod can apply pressure to the roller 124 so that the roller 124 abuts against the surface of the recess 111 of the rotating module 110.

[0095] Alternatively, roller 124 can be omitted, and one end of telescopic rod 121 can be made into a smooth circle, which can also reduce the friction between the swing end of swing module 120 and rotation module 110.

[0096] See Figure 2 and Figure 3 The telescopic rod 121 (e.g., rocker arm 1211) is also provided with a protrusion 1213, which can be used to trigger the counting module 130 when the telescopic rod 121 swings to a predetermined position. Thus, the sensitivity of the reciprocating frequency measuring device 100 can be further improved even when the installation position of the counting module 130 is limited, the sensing performance of the counting module 130 is limited, and the swing amplitude of the swing module 120 is limited.

[0097] See Figure 2 and Figure 3 As shown, the initial position of the telescopic rod 121 can be the center position O on the surface of the notch 111 or another position close to the center O. The predetermined position (i.e., the position where the swing module 120 triggers the counting module 130) can be the upper position C and / or the lower position D of the notch 111 on the rotating wheel 110. In specific applications, the initial position and the predetermined position can be flexibly selected as needed, as long as the telescopic rod 121 can swing back and forth synchronously with the reciprocating rotation of the rotating wheel 110 and can effectively trigger the counting module 130 during the reciprocating swing.

[0098] See Figure 2 and Figure 3 The motor reciprocating frequency measuring device 100 includes two counting modules 130, namely a first counting module 130A and a second counting module 130B. The predetermined positions of the swing module 120 may include a first position (e.g., position C) and a second position (e.g., position D). The first counting module 130A can be triggered when the swing module 120 passes through the first position to count the number of swings of the swing module 120 in the first direction. The second counting module 130B can be triggered when the swing module 120 passes through the second position to count the number of swings of the swing module 120 in the second direction. By setting two counting modules 130, the reciprocating frequency of the motor in both directions can be measured separately. This also prevents inaccurate measurement of the motor's reciprocating frequency due to situations such as the rotating module 110 not rotating to its designated position on one side or the counting module 130 on one side making a counting error.

[0099] See Figure 2 and Figure 3 A single counting module 130 may include a photoelectric sensor 131 and a counter 132, which are electrically connected. When the photoelectric sensor 131 senses that the swing module 120 has passed a predetermined position (e.g., position C, position D), it generates a switch control signal and provides it to the counter 132. The counter 132 updates the count value in response to the switch control signal. The count value represents the number of swings of the swing module 120.

[0100] See Figure 3 The initial position O of the roller 124 is within the recess 111 of the rotating wheel 110. The photoelectric sensor 131 of the first counting module 130A can be fixedly set at the upper left position of the rotating wheel 110 so that the sensing area of ​​the photoelectric sensor 131 always covers position C. The photoelectric sensor 131 of the second counting module 130B can be fixedly set at the lower left position of the rotating wheel 110 so that the sensing area of ​​the photoelectric sensor 131 always covers position D. During the test, the shaft of the rotating wheel 110 is connected to the drive shaft of the motor under test. The motor drives the rotating wheel 110 to rotate back and forth. The reciprocating rotation of the rotating wheel 110 drives the roller 124, which in turn drives the rocker arm 1211 to swing back and forth. When the rocker arm 1211 swings to position D below the recess 111 (i.e., the second direction mentioned above), it triggers the photoelectric sensor 131 of the second counting module 130B. The counter 132 of the second counting module 130B increments the count value by 1. When the rocker arm 1211 swings to position C above the notch 111 (i.e., the first direction mentioned above), it triggers the photoelectric sensor 131 of the first counting module 130A, and the counter 132 of the first counting module 130A increments the count value by 1. After the test is completed, the rotating wheel 110 stops rotating, and the in-situ spring allows the rocker arm 1211 to return to its initial position O. Thus, the rocker arm 1211 is driven to swing back and forth by the rotating wheel 110, and the counting module 130 records the number of swings of the rocker arm 1211, thereby testing and obtaining the reciprocating frequency of the motor.

[0101] Figure 4 A schematic diagram of the structure of an electric motor testing system 10 according to some embodiments of the present disclosure is shown.

[0102] Figure 5 A schematic diagram of an exemplary structure of a motor testing system 10 according to an embodiment of the present disclosure is shown.

[0103] Figure 6 Another exemplary structural schematic diagram of the motor testing system 10 according to an embodiment of the present disclosure is shown.

[0104] like Figure 4 As shown, the motor testing system 10 of this embodiment may include the aforementioned reciprocating frequency measuring device 100. Furthermore, the motor testing system 10 may also include a speed measuring device 200 and / or a load applying device 300. The speed measuring device 200 can be used to measure the motor speed, and the load applying device 300 can be used to adjust the load applied to the motor, so that the reciprocating frequency measuring device 100 can measure the reciprocating frequency of the motor under different loads and / or the speed measuring device 200 (hereinafter referred to as the speed measuring device 200) can measure the motor speed under different loads.

[0105] See Figure 5 and Figure 6The speed measuring device 200 may include a turntable 220 and a detection module 210. The turntable 220 has a notch and can be connected to a motor and rotate under the drive of the motor. The detection module 210 can be used to detect the number of times the notch appears on the turntable to obtain the number of rotations of the turntable 220, thereby obtaining the speed of the motor by the number of rotations.

[0106] See Figure 5 The detection module 210 may include a photoelectric sensor and a base. The photoelectric sensor is installed in the base and can detect the number of times the turntable notch appears at a certain position to obtain the number of rotations of the turntable 220.

[0107] It should be noted that, Figure 5 and Figure 6 This is merely an example; in actual applications, the structure and connection method of the speed measuring device are not limited to this.

[0108] The load application device 300 can apply a gradually increasing load to the motor under test. The upper limit of the load application device 300 is adjustable. Specifically, the upper limit of the load application device 300 can be adjusted to the rated load of the motor, N times the maximum load of the motor, where N is a value specified in the motor test specification, for example, N can be 1.6. Thus, the load applied to the motor by the load application module can gradually increase from 0 to the rated load, from 0 to N times the rated load, or from 0 to other values.

[0109] The specific structure of the load application device 300 is not limited. Exemplarily, the structure of the load application device 300 may adopt... Figure 5 The load application device 300A shown or Figure 6 The load application device 300B shown is an example.

[0110] The load application device 300A may include: a conical wheel connected to the motor shaft of the motor and rotating with the rotation of the motor; a pull rope, one end of which is fixed to the tip of the conical wheel, the pull rope being subjected to a constant force and winding around the conical wheel as it rotates, thereby increasing the lever arm and thus increasing the load applied to the motor.

[0111] In the load application device 300A, the other end of the pull rope can be connected to a slider, and the maximum load applied to the motor can be adjusted by adjusting the position of the slider.

[0112] See Figure 5As shown, in one implementation, the load application device 300A may include: a drive module 310A, a slider 320A, a pull rope 330A, and a conical wheel 340A. The drive module 310A can be used to drive the slider to slide along a direction parallel to the axial direction of the conical wheel 340A. The slider 320A can be connected to the drive module 310A and fix the pull rope 330A. Under the drive of the drive module 310A, the slider slides along a direction parallel to the axial direction of the motor to keep the angle between the pull rope 330A and the axial direction of the conical wheel 340A unchanged, so that the pull rope 330A is subjected to a constant force during the rotation of the conical wheel 340A. One end of the pull rope 330A is fixed by the slider 320A and subjected to a constant force, and the other end is fixed to the tip of the conical wheel 340A. The conical wheel 340A can be connected to the motor and rotates under the drive of the motor to drive the pull rope 330A to gradually wind around the conical wheel 340A.

[0113] During testing, after the load application device 300A is connected to the motor, the motor's drive shaft is connected to the conical wheel 340A. One end of the pull rope 330A is fixed to the tip of the conical wheel 340A, and the other end is fixed by the slider 320A and subjected to a constant force. Driven by the motor, the slider 320A slides in a direction parallel to the axial direction of the conical wheel 340A to maintain a constant angle between the pull rope 330A and the axial direction of the conical wheel 340A. The load connected to the pull rope 330A is constant in weight, and the pull rope 330A and the conical wheel... The constant axial angle of 340A allows the pull rope 330A to apply a constant force. The rotation of the motor drives the conical wheel 340A to rotate. As the conical wheel 340A rotates, the pull rope 330A gradually winds around the conical wheel 340A, and the lever arm gradually increases. The torque is equal to the product of the lever arm and the force. When the load application module provides a constant force, the torque gradually increases as the lever arm gradually increases, thereby increasing the load from 0 to the upper limit of the load, which is the rated load of the motor or N times the rated load.

[0114] The load limit of the load application device 300A can be adjusted by adjusting the position of the slider 320A to meet the testing requirements of the motor. Specifically, the drive module 310A can also be used to drive the slider 320A to slide in a direction parallel to the axial direction of the conical wheel 340A to set the initial position of the slider 320A, thereby setting the load limit of the load application device to a predetermined value, which can be the rated load of the motor or N times the rated load.

[0115] See Figure 5 The drive module 310A can be, but is not limited to, a motor.

[0116] The load application device 300B may include a belt 320B and a pulley 310B; the belt 320B is subjected to a constant force, the pulley 310B is connected to the motor shaft of the motor and rotates with the rotation of the motor, and when the pulley 310B rotates, the belt 320B winds around the pulley 310B, thereby increasing the lever arm and thus increasing the load applied to the motor.

[0117] See Figure 6 In one implementation, the load application device 300B may include a belt 320B and a pulley 310B. One end of the belt 320B is subjected to a constant force, and the other end is connected to the end of the pulley 310B. The pulley 310B can be connected to a motor and rotates under the drive of the motor, causing the belt to gradually wind around the pulley 310B. After the pulley 310B of the load application device 300B is connected to the motor, the rotation of the motor drives the pulley 310B to rotate. Since the belt 320B can be subjected to a constant force, as the pulley 310B rotates, the belt 320B will gradually wind around the pulley 310B, increasing the thickness and the lever arm. The torque is equal to the product of the lever arm and the force. When the load application module provides a constant force, as the lever arm gradually increases, the torque gradually increases, thereby increasing the load from 0 to the upper limit of the load, that is, the rated load of the motor or N times the rated load.

[0118] The load application device 300B can adjust the upper limit of the load by adjusting the thickness, width and / or length of the belt 320B, so that the upper limit of the load application device 300B is the rated load of the motor or N times the rated load.

[0119] See Figure 6 The pulley 310B can be, but is not limited to, cylindrical.

[0120] In other embodiments, the motor testing system 10 may further include a current measuring device connected to the load application module for measuring the motor's load current. In some embodiments, the current measuring device may at least be used to measure the motor's load current at maximum load. Of course, the current measuring device may also be used to measure the motor's load current under overload (e.g., N times the rated load), and to measure the motor's load current as the load gradually increases from 0 to the rated load or N times the rated load. Exemplarily, the current measuring device may be, but is not limited to, an ammeter or other similar current sensing element.

[0121] See Figure 5 and Figure 6During testing, the speed measurement module 200, reciprocating frequency measurement module 100, and load application module 300 can be connected to the motor's drive shaft via the motor linkage shaft. This allows for the measurement of the motor's reciprocating frequency, speed gradually increasing from 0 to rated load, rated load speed, and overload speed. To measure the motor's reciprocating frequency and speed under no-load conditions, the load application module 300 can be unloaded.

[0122] The motor reciprocating frequency measuring device 100 and testing system provided in this disclosure can test whether the motion performance of the motor used to drive the shaving blade in the power system of an endoscope used in hysteroscopic surgery meets the requirements of the regulations. Specifically, the testing system of this disclosure can accurately and efficiently measure the motor's no-load speed, no-load reciprocating frequency, speed from no-load to rated load range, speed under overload (i.e., 1.6 times the rated load), load current, and other performance indicators.

[0123] It should be noted that the motor reciprocating frequency measuring device 100 and testing system provided in this disclosure are not only applicable to the motor used to drive the shaving blade in the power system of an endoscope used for hysteroscopic surgery, but also applicable to various other types of motors, especially motors in medical systems. Furthermore, those skilled in the art should understand that this disclosure can also be applied to testing the reciprocating frequency, speed, current, and other indicators of unidirectional motion motors.

[0124] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0125] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0126] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. An electrical machine reciprocating frequency measuring device, characterized by, include: The rotating module has a notch, which allows it to be connected to an external motor and rotate back and forth under the drive of the motor; The swing module includes a fixed end and a swing end, wherein the fixed end is fixed, and in the initial state the swing end abuts against the initial position on the notch of the rotating module. When the rotating module rotates, the swing end is driven to swing back and forth around the fixed end and triggers the counting module when it swings to a predetermined position. After the rotating module stops rotating, the swing end returns to the initial position and stops swinging. The counting module is capable of counting when triggered by the swing module to obtain the number of swings of the swing module, so as to obtain the reciprocating frequency of the motor through the number of swings of the swing module; The swing module includes a telescopic rod, a fixed base, and a reset part. One end of the telescopic rod forms the swing end of the swing module, and the other end of the telescopic rod is movably fixed to the fixed base to form the fixed end of the swing module. The reset part is fixed to the fixed base and connected to the other end of the telescopic rod to drive the telescopic rod to swing back to the initial position. The predetermined positions include a first position and a second position; The motor reciprocating frequency measuring device includes two counting modules, namely a first counting module and a second counting module. The first counting module can be triggered when the swing module passes through the first position to count the number of swings of the swing module in the first direction. The second counting module can be triggered when the swing module passes through the second position to count the number of swings of the swing module in the second direction.

2. The motor reciprocating frequency measuring device according to claim 1, characterized by The rotating module is a rotating wheel with a notch on one side and a motor connecting shaft at the center. It can be connected to the drive shaft of the motor to rotate back and forth with the reciprocating motion of the motor.

3. The motor reciprocating frequency measuring device according to claim 1, characterized by The notch is an arc shape that is concave into the interior of the rotating module.

4. The motor reciprocating frequency measuring device according to claim 1, characterized by The telescopic rod can extend and retract in a direction perpendicular to the swing direction so that one end of the telescopic rod is always in contact with the surface of the rotating module during the reciprocating swing and after the swing stops.

5. The motor reciprocating frequency measuring device according to claim 1, characterized by One end of the telescopic rod is equipped with a roller, which is rotatably fixed to one end of the telescopic rod.

6. The motor reciprocating frequency measuring device according to claim 1, wherein The telescopic rod is provided with a protrusion, which is used to trigger the counting module when the telescopic rod swings to a predetermined position.

7. The motor reciprocating frequency measuring device according to claim 1, characterized by The telescopic rod includes a rocker arm and a telescopic spring. The telescopic spring is fitted around the rocker arm and can extend and retract along the length of the rocker arm to drive one end of the rocker arm to move in its length direction, so that one end of the rocker arm can always be in contact with the rotating module.

8. The motor reciprocating frequency measuring device according to claim 1, characterized by, The reset part is a reset spring, which is installed in the fixed base and connected to the other end of the telescopic rod.

9. The motor reciprocating frequency measuring device according to claim 1, characterized by, The fixed base is a pivot base that allows the other end of the telescopic rod to be fixed in a rotatable manner.

10. The motor reciprocating frequency measuring device according to claim 1, characterized by, The counting module includes a photoelectric sensor and a counter, which are electrically connected. When the photoelectric sensor senses that the swing module has passed the predetermined position, it generates a switch control signal and provides it to the counter. The counter updates its count value in response to the switch control signal. The count value represents the number of swings of the swing module.

11. An electrical machine testing system characterised in that, include: A speed measuring device for measuring motor speed and a motor reciprocating frequency measuring device as described in any one of claims 1 to 10.

12. The motor testing system of claim 11, wherein, The rotational speed measuring device includes: A turntable with a notch is used to connect to a motor and rotate under the drive of the motor; The detection module is used to detect the number of times the turntable notch appears to obtain the number of times the turntable rotates, and then obtain the motor speed from the number of rotations.

13. The motor testing system of claim 11, wherein, Also includes: A load application device for adjusting the load applied to the motor.

14. The motor testing system of claim 13, wherein, The load limit of the load application device is adjustable.

15. The motor testing system of claim 13, wherein, The load application device includes a belt and a pulley; the belt is subjected to a constant force, the pulley is connected to the motor shaft of the motor and rotates with the rotation of the motor, and when the pulley rotates, the belt wraps around the pulley, increasing the lever arm and thus increasing the load applied to the motor.

16. The motor testing system of claim 13, wherein, The load application device includes: The conical wheel is connected to the motor shaft and rotates as the motor rotates; A pull rope, one end of which is fixed to the tip of the conical wheel, is subjected to a constant force and winds around the conical wheel as it rotates, thereby increasing the lever arm and thus increasing the load applied to the motor.

17. The motor testing system of claim 16, wherein, The other end of the pull rope is connected to a slider, and the maximum load applied to the motor can be adjusted by adjusting the position of the slider.

18. The motor testing system of claim 11, wherein, Also includes: A current measuring device, at least for measuring the load current of the motor at maximum load.

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