Torsion testing device and system and electric toothbrush

Abstract

The utility model discloses a torsion testing device and system and an electric toothbrush, and relates to the technical field of torsion testing devices, and the device comprises a workbench, a fixing structure, a laser emission structure and a traction structure. A fixing structure, an opening and a traction structure are arranged on the upper portion of the workbench, a cavity communicated with the opening is formed in the workbench, and a laser generating structure is arranged in the cavity. The fixing structure is used for fixing a to-be-measured object, so that the to-be-measured part falls on the upper part of the opening. The laser generating structure emits laser to the center of the to-be-measured part of the to-be-measured object through the opening, and the laser is reflected to the upper portion of the workbench through the bottom of the to-be-measured part to form a swing track when the to-be-measured object is started. The traction structure is connected with a to-be-measured part of the to-be-measured object and used for pulling the to-be-measured part to enable the swing track to deviate and displaying the current traction force value as the torsion value when the end point of the swing track moves to the axis of the to-be-measured object. The torque measuring device is simple in structure, convenient to operate and capable of accurately measuring the torque value of small electric equipment such as an electric toothbrush.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of torsion testing devices, in particular to a torsion testing device, system and electric toothbrush. BACKGROUND

[0002] With the increasing emphasis on oral health, electric toothbrushes, as an efficient oral cleaning tool, are accepted and used by more and more consumers. Electric toothbrushes can effectively remove dental plaque and food residues and improve oral cleaning effect by driving the brush head to vibrate or rotate at high frequency through a motor. In the design and production process of electric toothbrushes, torsion is an important performance indicator, which directly affects the cleaning effect and service life of electric toothbrushes.

[0003] However, the existing torsion testing devices have the following problems when applied to electric toothbrush torsion testing: most of the existing torsion testing devices are designed for general use and are not optimized for the special structure and working characteristics of electric toothbrushes, resulting in low testing result accuracy. Moreover, most torsion testing devices use a direct connection of torsion sensors for measurement, lack dynamic monitoring capability of torsion changes under actual working conditions of electric toothbrushes, can only display numerical results and cannot intuitively show the torsion change process, and are difficult to adapt to electric toothbrushes of different models and structures, requiring adjustment of equipment parameters and connection methods every time different products are tested, which is not conducive to technical personnel to analyze and improve product design.

[0004] Therefore, there is an urgent need for a torsion testing device specially designed for small-torque output equipment such as electric toothbrushes, which can accurately, intuitively and conveniently measure the torsion of the motor or handle of an electric toothbrush to obtain the torque value, thereby providing reliable technical support for the research and development, production and quality control of electric toothbrushes. CONTENT OF THE INVENTION

[0005] The main purpose of the present application is to provide a torsion testing device, system and electric toothbrush, which aims to solve the technical problem of the existing torsion testing device for small-torque equipment such as electric toothbrushes being not accurate enough.

[0006] To achieve the above object, the application provides a torsion testing device, which comprises a workbench, a fixing structure, a laser emitting structure and a traction structure; the upper portion of the workbench is provided with the fixing structure, an opening and the traction structure; the fixing structure is aligned with the horizontal axis of the opening, and the traction structure is perpendicular to the horizontal axis of the opening; the inside of the workbench is provided with a cavity, which is communicated with the opening; the laser emitting structure is arranged in the cavity; the fixing structure is used for fixing the object to be tested, so that the testing part of the object to be tested falls on the upper portion of the opening; the laser emitting structure is used for emitting laser to the central position of the testing part of the object to be tested through the opening; when the object to be tested is started, the laser is reflected to the upper portion of the workbench through the bottom of the testing part of the object to be tested to form a swing track, and the center of the swing track is located on the axis of the object to be tested; the traction structure is connected to the testing part of the object to be tested and is used for pulling the testing part of the object to be tested to make the swing track deviate; the traction structure is also used for moving the end point of the swing track to the axis of the object to be tested to display the current pulling force value as the torsion value.

[0007] In an embodiment, the torsion testing device further comprises a scale display disc; the scale display disc is arranged on the upper portion of the workbench; the scale display disc is provided with a scale, and the zero scale line of the scale display disc is aligned with the horizontal axis of the opening; the scale display disc is used for receiving the swing track.

[0008] In an embodiment, the traction structure comprises a traction line, a tension gauge, a moving body and a power device; the tension gauge is fixedly connected to the upper portion of the moving body; the moving body is arranged on the upper portion of the workbench and is connected to the power device; the first end of the traction line is connected to the tension gauge, and the second end of the traction line is connected to the testing part of the object to be tested; the power device controls the moving body to move, and the moving body is used for pulling the testing part of the object to be tested by the tension gauge to make the swing track deviate; the tension gauge is used for moving the end point of the swing track to the axis of the object to be tested to display the current pulling force value as the torsion value.

[0009] In an embodiment, the moving body comprises a sliding block and a sliding rail; the tension gauge is fixedly connected to the sliding block; the sliding block is slidingly connected to the sliding rail; the sliding block is also connected to the power device; the sliding rail is arranged perpendicularly to the horizontal axis of the opening and is fixedly connected to the upper portion of the workbench.

[0010] In an embodiment, the power device comprises a hand crank or a motor.

[0011] In an embodiment, the fixing structure comprises a fixing body and a pad; the fixing body is fixedly connected with the pad; the pad is fixedly connected with the upper portion of the workbench; the pad is used to change the height of the object to be tested fixed to the fixing structure; the fixing body is used to fix the holding portion of the object to be tested.

[0012] In an embodiment, the fixing body comprises a bracket, a gasket and a fastening screw; the bracket is fixedly connected with the pad and is arranged on the transverse axis of the opening; the gasket is arranged on both sides of the bracket, and the gasket and the fastening screw are combined to fix the object to be tested on the upper portion of the bracket.

[0013] In addition, in order to achieve the above-mentioned purpose, the application further provides an electric toothbrush, which is applied to the torsion test device as described above, and the electric toothbrush comprises a holding portion, a connecting portion and a brush head; the power shaft of the holding portion is connected with the brush head through the test site; the connecting portion is externally provided with a screw hole, and a screw is arranged at the screw hole to lock the power shaft; the connecting portion is externally provided with an annular groove; the annular groove is used to connect the traction structure of the torsion test device.

[0014] In an embodiment, the bottom of the connecting portion is provided with a reflecting plane; the reflecting plane is pasted with reflecting material.

[0015] In addition, in order to achieve the above-mentioned purpose, the application further provides a torsion test system, which comprises the torsion test device as described above and the electric toothbrush as described above. The electric toothbrush is arranged on the torsion test device.

[0016] The one or more technical solutions provided by the application have at least the following technical effects: the laser emitting structure is arranged inside the workbench, and the laser is emitted to the test site of the object to be tested through the opening; the swing track is formed by using the reflecting principle; the traction structure is combined to apply the pulling force to the test site; when the end point of the swing track moves to the axis of the object to be tested, the value displayed by the tension meter is the torsion value, so that the accurate measurement of the torque value of the motor or handle of the electric toothbrush is realized; the design of the scale display disc makes the measurement process more intuitive and visual; the adjustable fixing structure facilitates the adjustment of the position of the object to be tested, and ensures the accuracy of the measurement; the traction line is fixed in the pulling direction, so that the accuracy and reliability of the test are ensured. Compared with the prior art, the torsion test device provided by the application has the advantages of simple structure, convenient operation, high measurement precision and the like, and can meet the accurate measurement requirement of the torque value of the motor or handle of the electric toothbrush. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0019] Figure 1 The structural schematic diagram provided for the first embodiment of the torque testing device of the present application is shown in the figure.

[0020] Figure 2 The specific selection schematic diagram provided for the first embodiment of the torque testing device of the present application is shown in the figure.

[0021] Figure 3 The partial structural schematic diagram of the electric toothbrush provided for the second embodiment of the present application is shown in the figure.

[0022] Explanation of reference numerals:

[0023] Reference numerals Description Reference numerals Description 01 Object to be tested 22 Pad block 10 Workbench 41 Tow line 20 Fixing structure 42 Tension meter 30 Laser emitting structure 43 Moving body 40 Tow structure 44 Power device 50 Connection part 51 Screw hole 11 Opening 52 Annular groove 12 Scale display disc 53 Reflective plane 21 Fixed body

[0024] The purpose realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application, and are not used to limit the present application.

[0026] In order to better understand the technical solutions of the present application, the following will be described in detail in combination with the drawings of the specification and specific embodiments.

[0027] The existing torque testing device has the following problems when applied to the torque testing of electric toothbrushes: the existing torque testing device is mostly designed for general use, and is not optimized for the special structure and working characteristics of electric toothbrushes, resulting in low accuracy of test results. Moreover, most torque testing devices use the method of directly connecting torque sensors for measurement, lack the dynamic monitoring capability of torque changes under the actual working state of electric toothbrushes, can only display numerical results, and cannot intuitively show the torque change process, making it difficult to adapt to electric toothbrushes of different models and structures, and requiring the adjustment of equipment parameters and connection methods every time different products are tested, which is not conducive to the analysis and improvement of product design by technical personnel.

[0028] Based on this, a torque testing device is provided in the present application, please refer to Figure 1 , Figure 1 The structural schematic diagram provided for the first embodiment of the torque testing device of the present application is shown in the figure. In this embodiment, a torque testing device is provided, which comprises a workbench 10, a fixing structure 20, a laser emitting structure 30 and a traction structure 40.

[0029] It should be noted that the upper part of the workbench 10 is provided with a fixed structure 20, an opening 11 and a traction structure 40. The fixed structure 20 is aligned with the horizontal axis of the opening 11, and the traction structure 40 is perpendicular to the horizontal axis of the opening 11. The inside of the workbench 10 is provided with a cavity, which is in communication with the opening 11. The laser generating structure 30 is arranged in the cavity.

[0030] It should be noted that the fixed structure 20 is used to fix the object to be tested 01, so that the part to be tested of the object to be tested 01 falls on the upper part of the opening 11. The laser generating structure 30 is used to emit laser through the opening 11 to the center position of the part to be tested of the object to be tested 01. When the laser is started in the object to be tested 01, it is reflected to the upper part of the workbench 10 through the bottom of the part to be tested of the object to be tested 01 to form a swing track, and the center of the swing track is located on the axis of the object to be tested 01.

[0031] It can be understood that the object to be tested 01 refers to a kind of mechanical equipment or device specially designed to output small torque. Torque, as a physical quantity to measure the effect of force on the rotation of an object around a point or an axis, is precisely controlled at a low level in the object to be tested 01 to adapt to a series of application scenarios that require fine and specific torque.

[0032] It can be understood that the specific value range of small torque will vary depending on different equipment types and application requirements. For example, in some precision instrument driving devices, the torque may be only a few newton-meters or even smaller; while in personal care devices such as electric toothbrushes, the torque size is precisely calculated to ensure that the working parts (such as the brush head) can be effectively driven to operate, and the use of objects (such as teeth and gums) will not be damaged due to excessive torque. In order to obtain accurate torque, it is necessary to test the torque.

[0033] It should be noted that the traction structure 40 is connected to the part to be tested of the object to be tested 01, and is used to pull the part to be tested of the object to be tested 01 to make the swing track deviate. The traction structure 40 is also used to move the end point of the swing track to the axis of the object to be tested 01, and display the current traction force value as the torque value.

[0034] It should be noted that the workbench 10 is made of metal material, which has sufficient stability and bearing capacity, and the upper surface is smooth, which is convenient for observing the swing track formed by the reflection of laser. The size of the workbench 10 can be designed according to actual needs, for example, the length is 80 centimeters, the width is 60 centimeters, and the height is 75 centimeters. The workbench 10 is provided with an opening 11 on the upper part, which can be designed as a circular or long and narrow strip with a diameter of 5 centimeters, located at the center position of the upper part of the workbench 10. The internal cavity of the workbench 10 is in communication with the opening 11, and the laser emitting structure 30 is arranged in the cavity.

[0035] It should be noted that the laser emitting structure 30 includes a laser generator and a support frame, the laser generator is fixed on the support frame, and the support frame is fixed in the internal cavity of the workbench 10. The laser beam emitted by the laser generator is vertically upward and is emitted to the center position of the to-be-measured part of the to-be-measured object 01 through the opening 11. The laser generator adopts a low-power laser, which can be selected as 5 milliwatts, 650 nanometers, and emits red visible light, which is convenient for observation.

[0036] It should be noted that the fixing structure 20 is arranged at the upper part of the workbench 10 and is aligned with the horizontal axis of the opening 11. The fixing structure 20 is used to fix the to-be-measured object 01, so that the to-be-measured part of the to-be-measured object 01 is just located above the opening 11. The fixing structure 20 can contain clamping mechanisms, locking devices or other fixing means inside, and the fixing structure can firmly hold the to-be-measured object to prevent it from moving or deviating during measurement or detection. Such stability is crucial for obtaining accurate measurement results.

[0037] In addition, in order to adapt to to-be-measured objects 01 of different sizes, the height of the fixing structure 20 can be adjusted. This adjustment function enables the fixing structure to flexibly adapt to objects of different sizes, thereby expanding its application range and applicability. By adjusting the height of the fixing structure, we can ensure that the to-be-measured part of the to-be-measured object is always located directly above the opening 11, thereby further improving the accuracy and efficiency of the measurement.

[0038] It should be noted that the traction structure 40 is arranged at the upper part of the workbench 10 and is perpendicular to the horizontal axis of the opening 11, ensuring that the direction of the traction force is orthogonal to the torque output plane of the to-be-measured object 01, forming a moment effect. The traction structure 40 is used to connect the to-be-measured part of the to-be-measured object 01 and apply a traction force to the to-be-measured object 01 when the to-be-measured object 01 outputs a small torque, so as to offset the swing trajectory of the to-be-measured object 01 when the to-be-measured object 01 outputs a torque. A linear actuator (such as a servo motor + ball screw or a pneumatic device) can be used to connect the to-be-measured part through an adjustable rigid connecting rod to achieve precise torque control.

[0039] In addition, the traction structure 40 can be internally provided with a high-precision force sensor to monitor the traction force in real time, and the data is fed back to the control system to form a closed-loop regulation. When the end point of the swing trajectory moves to the axis of the to-be-measured object 01, that is, when the limit position (end point) of the swing trajectory is detected to return to the axis, it indicates that the traction torque and the to-be-measured torque reach static force balance, and the current traction force value is displayed as the torque value.

[0040] Further, the embodiment also gives a specific implementation of the above structure. Please refer to Figure 2 , Figure 2 The specific selection diagram provided for the first embodiment of the torque testing device of the present application.

[0041] The torsion testing device of the embodiment further comprises a scale display disc 12. The scale display disc 12 is arranged on the upper portion of the workbench 10 and is used to receive the swing trajectory. The scale display disc 12 is provided with a scale, and the zero scale line of the scale display disc 12 is aligned with the horizontal axis of the opening 11. The shape of the scale display disc 12 is not limited, which can be a square display length or a circular display angle, and the center is aligned with the center of the opening 11. The scale display disc 12 is engraved with an angle scale from 0 degrees to 360 degrees, one scale per 1 degree, and a numerical mark every 5 degrees, which is convenient for reading the angle value.

[0042] It should be noted that the first end of the traction line 41 in the traction structure 40 is connected to the tension gauge 42, and the second end of the traction line 41 is connected to the to-be-tested part of the to-be-tested object 01. The tension gauge 42 is fixedly connected to the upper portion of the moving body 43. The moving body 43 is arranged on the upper portion of the workbench 10 and is connected to the power device 44. The power device 44 controls the movement of the moving body 43, and the moving body 43 is used to drive the tension gauge 42 to pull the to-be-tested part of the to-be-tested object 01 to offset the swing trajectory. The tension gauge 42 is used to move the end point of the swing trajectory to the axis of the to-be-tested object 01, and display the current pulling force value as the torsion value.

[0043] It should be noted that the traction line 41 is made of high-strength nylon wire with a diameter of 0.5 mm, and the length can be adjusted according to actual needs. The tension gauge 42 is a digital tension gauge with a range of 0-10 Newton and an accuracy of 0.01 Newton, and has a digital display screen that can display the pulling force value in real time.

[0044] It should be noted that the moving body 43 includes a sliding block and a sliding rail. The tension gauge 42 is fixedly connected to the sliding block. The sliding block is slidingly connected to the sliding rail. The sliding block is also connected to the power device 44. The sliding rail is arranged perpendicularly to the horizontal axis of the opening 11 and is fixedly connected to the upper portion of the workbench 10. The length of the sliding rail can be designed as needed, and the sliding rail is made of metal material with a smooth surface to reduce friction. The sliding block is made of polytetrafluoroethylene material, and the friction coefficient between the sliding block and the sliding rail is small, so that the sliding is stable.

[0045] It should be noted that the power device 44 includes a hand crank or a motor. When the hand crank is used, the operator can rotate the hand crank to drive the sliding block to move on the sliding rail, thereby controlling the size of the pulling force. When the motor is used, the motor is connected to a lead screw through a speed reducer, and the lead screw is connected to the sliding block. The motor rotates to drive the lead screw to rotate, and the lead screw rotates to drive the sliding block to move. The motor is a stepping motor with adjustable rotating speed, which is convenient for accurately controlling the size of the pulling force.

[0046] It should be noted that the fixing structure 20 includes a fixing body 21 and a pad 22. The fixing body 21 is fixedly connected to the pad 22. The pad 22 is fixedly connected to the upper portion of the workbench 10. The pad 22 is used to change the height at which the to-be-tested object 01 is fixed to the fixing structure 20. The fixing body 21 is used to fix the holding portion of the to-be-tested object 01.

[0047] It should be noted that the cushion block 22 is made of metal or hard plastic material, and the height can be 5 cm, 10 cm or 15 cm, and the appropriate height is selected according to the size of the object to be measured 01. The cushion block 22 is fixedly connected with the workbench 10 by bolts, and different height cushion blocks 22 can be replaced as needed.

[0048] It should be noted that the fixed body 21 includes a bracket, a gasket and a fastening screw. The bracket is fixedly connected with the cushion block 22 and is arranged on the horizontal axis of the opening 11. The gasket is arranged on both sides of the bracket, and the gasket and the fastening screw are combined to fix the object to be measured 01 on the upper part of the bracket. The bracket adopts a U-shaped structure, and the inner side is provided with a rubber pad to prevent damage to the object to be measured 01. The gasket is made of soft material, which can protect the object to be measured 01 from being damaged by the fastening screw. The fastening screw is designed to be hand-tightened, which is convenient to operate.

[0049] The working process of the torque testing device of the embodiment is as follows:

[0050] First, the object to be measured 01 is fixed on the fixed structure 20, so that the measured part of the object to be measured 01 is located above the opening 11. Then, the laser emitting structure 30 is started, and the laser is emitted through the opening 11 to the center position of the measured part of the object to be measured 01. Then, the object to be measured 01 is started, and the measured part of the object to be measured 01 starts to rotate, and the laser is reflected through the bottom of the measured part of the object to be measured 01 to the scale display disc 12 on the upper part of the workbench 10, forming a swing track. The center of the swing track is located on the axis of the object to be measured 01.

[0051] Then, the measured part of the object to be measured 01 is connected through the traction structure 40, one end of the traction line 41 is connected with the tension gauge 42, and the other end is connected with the measured part of the object to be measured 01. The moving body 43 is controlled to move through the power equipment 44, driving the tension gauge 42 to pull the measured part of the object to be measured 01, so that the swing track is deviated. When the end point of the swing track moves to the axis of the object to be measured 01, the current pulling force value displayed by the tension gauge 42 is the torque value of the object to be measured 01.

[0052] In the embodiment, the laser emitting structure is arranged inside the workbench, and the laser is emitted to the measured part of the object to be measured through the opening, the swing track is formed by using the reflection principle, the tension is applied to the measured part by the traction structure, when the end point of the swing track moves to the axis of the object to be measured, the value displayed by the tension gauge is the torque value, so that the torque value of the motor or handle of the electric toothbrush is accurately measured; through the design of the scale display disc, the measurement process is more intuitive and visual; through the adjustable fixed structure, the position of the object to be measured is adjusted, and the accuracy of the measurement is ensured; the traction line is fixed in the pulling direction, and the accuracy and reliability of the test are ensured.

[0053] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as the above embodiment one can refer to the above introduction, and the subsequent will not be described. On this basis, the present application provides a torque testing system, comprising the torque testing device and the electric toothbrush as described in embodiment 1. The electric toothbrush is arranged on the torque testing device. Specifically, please refer to Figure 3 , Figure 3 The partial structure schematic diagram of the electric toothbrush provided in the second embodiment of the present application.

[0054] It should be noted that the electric toothbrush includes a holding part, a connecting part 50 and a brush head. The holding part is the main part of the electric toothbrush, and the user grasps and controls the electric toothbrush through it. The connecting part 50 is one of the core components of the electric toothbrush, which connects the holding part and the brush head. The brush head is the cleaning part of the electric toothbrush, and its design is directly related to the cleaning effect and user experience. The holding part of the electric toothbrush is provided with a motor and a battery, and the motor drives the brush head to swing through a power shaft.

[0055] It should be noted that the power shaft of the holding part is connected to the brush head through the connecting part 50. The connecting part 50 is externally provided with a screw hole 51, and a screw is arranged at the screw hole 51 for locking the power shaft. The connecting part 50 is externally provided with an annular groove 52. The annular groove 52 is used to connect the traction structure 40 of the torque testing device.

[0056] It can be understood that the connecting part 50 is externally designed with a screw hole 51, which is designed to lock the power shaft inside the connecting part 50 through a screw, to ensure the stability and reliability of power transmission. The arrangement of the screw hole 51 not only enhances the structural strength of the connecting part 50, but also facilitates the user to disassemble and maintain the power shaft when necessary.

[0057] It can be understood that the design of the annular groove 52 has multiple functions. On the one hand, it can be used as an interface for connecting the traction structure 40 of the torque testing device, facilitating the connection of the testing device and the electric toothbrush; on the other hand, the annular groove 52 can also play a positioning and limiting role, to ensure that the traction structure 40 can stably exert traction force during testing, avoiding errors in test results. Specifically, an annular groove 52 with a ring width of 3mm and a depth of 2mm can be selected to facilitate stable connection of the traction line 41.

[0058] It should be noted that the connecting part 50 is provided with a reflection plane 53 at the bottom. The reflection plane 53 is an important feature of the bottom of the connecting part 50, which is made by means of a planing process, that is, using professional tools to accurately smooth the bottom of the connecting part, to ensure the flatness of the reflection plane.

[0059] It should be noted that the reflective plane 53 is pasted with a reflective material. The reflective material is a mirror material with high reflectivity, which can effectively reflect the laser and form a clear swing trajectory. The thickness of the reflective plane 53 is about 1mm. The reflective plane 53 is fixed on the bottom of the connecting part 50 by an adhesive. This fixing method is not only simple and convenient, but also can ensure that the reflective plane will not fall off or shift during use.

[0060] The working process of the torque testing system of the embodiment is as follows:

[0061] First, fix the holding part of the electric toothbrush on the fixing structure 20 of the torque testing device, so that the connecting part 50 is located above the opening 11. The reflective plane 53 at the bottom of the connecting part 50 faces the opening 11. Start the laser emitting structure 30, and the laser is emitted through the opening 11 to the center position of the reflective plane 53. Start the electric toothbrush, and the power shaft of the electric toothbrush drives the connecting part 50 to rotate. The laser is reflected by the reflective plane 53 to the scale display disc 12 on the upper part of the workbench 10, forming a swing trajectory.

[0062] Then, connect the traction line 41 of the traction structure 40 with the annular groove 52 of the connecting part 50, control the movement of the moving body 43 through the power equipment 44, drive the tensile meter 42 to pull the connecting part 50, and make the swing trajectory deviate. When the end point of the swing trajectory moves to the axis of the electric toothbrush, the current pulling force value displayed by the tensile meter 42 is the torque value of the electric toothbrush.

[0063] Through the torque testing system of the embodiment, the torque value of the electric toothbrush in the working state can be accurately measured, which provides important reference data for the design and quality control of the electric toothbrush.

[0064] Exemplarily, in order to help understand the torque testing system obtained by combining the above embodiments. The embodiment provides a specific application process of a torque testing device for accurately testing the torque value of an electric toothbrush.

[0065] First, prepare the torque testing device and the electric toothbrush. The torque testing device includes a workbench 10, a fixing structure 20, a laser emitting structure 30 and a traction structure 40. The electric toothbrush includes a holding part, a connecting part 50 and a brush head.

[0066] Then, fix the holding part of the electric toothbrush on the fixing structure 20. The fixing structure 20 includes a fixed body 21 and a pad 22. According to the size of the electric toothbrush, select a pad 22 with appropriate height, so that the connecting part 50 is just located above the opening 11. The fixed body 21 includes a bracket, a gasket and a fastening screw. Place the holding part of the electric toothbrush on the bracket, place the gasket on both sides, and fix the electric toothbrush on the bracket by the fastening screw.

[0067] Then, the laser emitting structure 30 is started. The laser emitting structure 30 emits laser through the opening 11, and the laser is reflected by the reflecting plane 53 at the center of the bottom of the connecting part 50.

[0068] Then, the electric toothbrush is started. The power shaft of the electric toothbrush drives the connecting part 50 to swing, and the laser is reflected by the reflecting plane 53 to the scale display disc 12 at the upper part of the workbench 10, forming a swing track. The center of the swing track is located on the axis of the electric toothbrush.

[0069] Next, the connecting part 50 of the electric toothbrush is connected through the traction structure 40. The traction structure 40 includes a traction line 41, a tension gauge 42, a moving body 43, and a power device 44. One end of the traction line 41 is connected to the tension gauge 42, and the other end is connected to the annular groove 52 of the connecting part 50.

[0070] Then, the moving body 43 is controlled to move through the power device 44. The moving body 43 includes a sliding block and a sliding rail, and the tension gauge 42 is fixedly connected to the sliding block. The power device 44 can be a hand crank or a motor. By controlling the power device 44, the moving body 43 drives the tension gauge 42 to move, thereby pulling the connecting part 50 and offsetting the swing track.

[0071] Finally, when the end point of the swing track moves to the axis of the electric toothbrush, the current traction force value displayed by the tension gauge 42 is read, which is the torsion value of the electric toothbrush.

[0072] Through the method of the embodiment, the torsion value of the electric toothbrush in the working state can be accurately measured, and the measurement process is simple, intuitive, and accurate, which provides important reference data for the design and quality control of the electric toothbrush.

[0073] The above only describes some embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the technical concept of the present application, and the contents of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A torsion testing device, characterized by, The torsion testing device comprises a workbench, a fixing structure, a laser emitting structure and a traction structure; The upper part of the workbench is provided with the fixing structure, an opening and the traction structure; the fixing structure is aligned with the horizontal axis of the opening, and the traction structure is perpendicular to the horizontal axis of the opening; the inside of the workbench is provided with a cavity, which is communicated with the opening; the laser emitting structure is arranged in the cavity; The fixing structure is used for fixing the object to be tested, so that the part to be tested of the object to be tested falls on the upper part of the opening; The laser emitting structure is used for emitting laser to the center position of the part to be tested of the object to be tested through the opening; when the object to be tested is started, the laser is reflected to the upper part of the workbench through the bottom of the part to be tested of the object to be tested to form a swing track, and the center of the swing track is located on the axis of the object to be tested; The traction structure is connected to the part to be tested of the object to be tested, and is used for pulling the part to be tested of the object to be tested to offset the swing track; The traction structure is also used for moving the end point of the swing track to the axis of the object to be tested, and displaying the current traction force value as the torsion value.

2. The torsion testing device of claim 1, wherein, The torsion testing device further comprises a scale display disc; The scale display disc is arranged on the upper part of the workbench; The scale display disc is provided with a scale, and the zero scale line of the scale display disc is aligned with the horizontal axis of the opening; The scale display disc is used for receiving the swing track.

3. The torsion testing device of claim 1, wherein, The traction structure comprises a traction line, a tension gauge, a moving body and a power device; The tension gauge is fixedly connected to the upper part of the moving body; The moving body is arranged on the upper part of the workbench and connected to the power device; The first end of the traction line is connected to the tension gauge, and the second end of the traction line is connected to the part to be tested of the object to be tested; The power device controls the movement of the moving body, and the moving body is used to pull the part to be tested of the object to be tested by the tension gauge to offset the swing track; The tension gauge is used for moving the end point of the swing track to the axis of the object to be tested, and displaying the current traction force value as the torsion value.

4. The torsion testing device of claim 3, wherein, The moving body comprises a sliding block and a sliding rail; the tension gauge is fixedly connected to the sliding block; the sliding block is slidingly connected to the sliding rail; and the sliding block is further connected to the power device; The sliding rail is arranged perpendicularly to the horizontal axis of the opening and is fixedly connected to the upper part of the workbench.

5. The torsion testing device of claim 3, wherein, The power device comprises a hand crank or a motor.

6. The torsion testing device of claim 1, wherein The fixing structure comprises a fixing body and a pad; The fixing body is fixedly connected to the pad, and the pad is fixedly connected to the upper part of the workbench; The pad is used for changing the height of the object to be tested fixed to the fixing structure; The fixing body is used for fixing the holding part of the object to be tested.

7. The torsion testing device of claim 6, wherein, The fixing body comprises a bracket, a gasket and a fastening screw; The bracket is fixedly connected to the pad and arranged on the horizontal axis of the opening; The gasket is arranged on both sides of the bracket, and the gasket and the fastening screw are combined to fix the object to be tested on the upper part of the bracket.

8. An electric toothbrush characterized by comprising: The electric toothbrush is applied to the torsion testing device according to any one of claims 1 to 6, and the electric toothbrush comprises a holding part, a connecting part and a brush head. The power shaft of the holding part is connected to the brush head through the part to be tested; The connecting part is externally provided with a screw hole, and a screw is arranged at the screw hole to lock the power shaft; The connecting part is externally provided with an annular groove; the annular groove is used to connect a traction structure of the torsion test device.

9. The electric toothbrush of claim 8, wherein the head is pivotally mounted to the handle. The bottom of the connecting part is provided with a reflecting plane; the reflecting plane is pasted with reflecting material.

10. A torsion testing system characterized by, The torsion test system comprises the torsion test device according to any one of claims 1 to 6 and the electric toothbrush according to any one of claims 8 to 9. The electric toothbrush is arranged on the torsion test device.

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