Method of measuring, control device and measuring apparatus for an electric toothbrush

Abstract

The application discloses a kind of electric toothbrush measuring method, control device and measuring equipment, it is related to electric toothbrush measuring technical field.Electric toothbrush includes brush handle and brush head with relative first side and second side;Measuring equipment includes pressure assembly and swing detection component, wherein swing detection component includes first swing detection piece and second swing detection piece;Pressure assembly has with the second side of brush head separation first position and abutting second position;Measuring method includes: control pressure assembly moves to second position, and first side of brush head is applied with preset analog brushing pressure;Control two swing detection pieces to brush head first side emit first, second laser with included angle;First, second reflection signals corresponding to first, second laser are acquired;According to first, second reflection signals, determine the swing of brush head under the pressure.The technical scheme provided by the application can improve the swing measurement accuracy and test reliability of the brush head of electric toothbrush.

Description

Technical Field

[0001] This invention relates to the field of electric toothbrush measurement technology, and particularly to a method, control device, and measuring equipment for measuring electric toothbrushes. Background Technology

[0002] In the research and development and performance evaluation of electric toothbrushes, accurately measuring the oscillation amplitude of the brush head under simulated actual brushing conditions is a crucial indicator for evaluating its cleaning effectiveness and user experience. However, current technologies for measuring the oscillation amplitude of electric toothbrush heads are typically performed under no-load or non-simulated real-world conditions, making it difficult to reflect the changes in brush head movement caused by pressure applied during actual brushing. Furthermore, due to the high-frequency vibration or oscillation of the brush head during operation and its complex motion trajectory, traditional contact measurement methods are prone to interfering with the normal movement of the brush head. Non-contact optical measurement methods, if using only a single-direction detection beam, struggle to accurately capture the true three-dimensional oscillation behavior of the brush head under pressure, thus affecting the accuracy of the oscillation amplitude data. Therefore, achieving high-precision measurement of the brush head oscillation amplitude while applying simulated brushing pressure has become a significant technical challenge in the field of electric toothbrush performance testing. Summary of the Invention

[0003] The main objective of this invention is to provide a measurement method, control device, and measuring equipment for electric toothbrushes, aiming to improve the measurement accuracy and testing reliability of the brush head swing amplitude of electric toothbrushes.

[0004] To achieve the above objectives, the present invention proposes a measurement method for an electric toothbrush, which is used in a measuring device for an electric toothbrush. The electric toothbrush includes a handle and a brush head having opposing first and second sides. The measuring device includes a pressure application component and a swing amplitude detection component, the swing amplitude detection component including a first swing amplitude detection element and a second swing amplitude detection element. The pressure application component has a first position separated from the second side of the brush head and a second position abutting against the second side of the brush head. The measurement method includes:

[0005] The pressure-applying component is controlled to move from the first position to the second position, so that the pressure-applying component abuts against the second side of the brush head and applies a preset simulated brushing pressure to the brush head; The first swing amplitude detection element is controlled to emit a first laser towards the first side of the brush head, and the second swing amplitude detection element is controlled to emit a second laser towards the first side of the brush head, wherein the emission direction of the first laser and the emission direction of the second laser are set at an angle. Acquire a first reflection signal generated by the brush head reflecting the first laser, and a second reflection signal generated by the brush head reflecting the second laser; Based on the first reflected signal and the second reflected signal, the brush head oscillation amplitude corresponding to the preset simulated brushing pressure is determined.

[0006] In one embodiment, the swing amplitude detection assembly further includes a detection ruler, which is configured to be positioned opposite to the second side of the brush head; The step of determining the brush head oscillation amplitude corresponding to the preset simulated brushing pressure based on the first reflected signal and the second reflected signal includes: Based on the first reflected signal, the first distance between the first side of the brush head and the detection ruler, and the first displacement of the first laser on the detection ruler are obtained; Based on the second reflected signal, a second distance between the first side of the brush head and the detection ruler, and a second displacement of the second laser on the detection ruler are obtained; The first brush head swing amplitude is calculated based on the first distance, the first displacement, and the length of the brush head bristles. The second brush head swing amplitude is calculated based on the second distance, the second displacement, and the length of the brush head bristles. The larger of the first and second brush head swing amplitudes is taken as the brush head swing amplitude corresponding to the preset simulated brushing pressure.

[0007] In one embodiment, the included angle is not less than 30 degrees and not greater than 60 degrees.

[0008] In one embodiment, the pressure application assembly includes a drive member, a pressure detection member, and a pressure head, wherein the pressure detection member connects the drive member and the pressure head; The step of controlling the pressure-applying component to move from the first position to the second position, so that the pressure-applying component abuts against the second side of the brush head and applies a preset simulated brushing pressure to the brush head includes: The driving component is controlled to drive the pressure head to move from the first position to the second position, so that the pressure head abuts against the second side of the brush head and applies a preset simulated brushing pressure to the brush head; The pressure value applied by the pressure-applying head to the second side of the brush head is obtained through the pressure detection device; The output power of the drive unit is adjusted according to the pressure value applied to the second side of the brush head by the pressure head until the pressure value applied to the second side of the brush head by the pressure head reaches the preset simulated brushing pressure.

[0009] In one embodiment, the pressure application assembly further includes a transparent element and a camera element; the pressure application head has a fixing groove, the transparent element is disposed in the fixing groove, and the position of the transparent element corresponds to the position of the pressure detection element; the pressure detection element has a detection groove, and the camera element is disposed facing the detection groove; The measurement method for the electric toothbrush also includes: The camera captures the oscillation trajectory of the brush head. The oscillation speed of the brush head is determined based on the obtained oscillation trajectory of the brush head.

[0010] In one embodiment, determining the oscillation speed of the brush head based on the acquired oscillation trajectory of the brush head includes: Extract the displacement sequence of preset feature points on the brush head within at least one oscillation cycle from the oscillation trajectory of the brush head; Based on the displacement sequence and the shooting frame rate of the camera, the average linear velocity of the preset feature points is calculated, and the average linear velocity is used as the oscillation speed of the brush head.

[0011] In one embodiment, the measurement method for the electric toothbrush further includes: The pressure application component is controlled to sequentially apply multiple different preset simulated brushing pressures; For each preset simulated brushing pressure, the following steps are executed: controlling the first amplitude detection element to emit a first laser towards the first side of the brush head, and controlling the second amplitude detection element to emit a second laser towards the first side of the brush head, wherein the emission direction of the first laser and the emission direction of the second laser are set at an angle; acquiring the first reflection signal generated by the brush head reflecting the first laser, and the second reflection signal generated by the brush head reflecting the second laser; determining the brush head amplitude corresponding to the preset simulated brushing pressure based on the first reflection signal and the second reflection signal, so as to obtain the pressure-amplitude relationship curve under different preset simulated brushing pressures.

[0012] In one embodiment, the measurement method for the electric toothbrush further includes: The pressure application component is controlled to alternately apply pressure between at least two different preset simulated brushing pressures; For each preset simulated brushing pressure, the following steps are executed: controlling the first amplitude detection element to emit a first laser towards the first side of the brush head, and controlling the second amplitude detection element to emit a second laser towards the first side of the brush head, wherein the emission direction of the first laser and the emission direction of the second laser are set at an angle; acquiring the first reflection signal generated by the brush head reflecting the first laser, and the second reflection signal generated by the brush head reflecting the second laser; determining the brush head amplitude corresponding to the preset simulated brushing pressure based on the first reflection signal and the second reflection signal, so as to obtain the pressure-amplitude relationship curve under different preset simulated brushing pressures.

[0013] The present invention also proposes a control device, including a processor and a memory, wherein the memory stores a measurement control program for an electric toothbrush, and when the processor executes the measurement control program for the electric toothbrush, the measurement method for the electric toothbrush as described above is implemented.

[0014] The present invention also proposes a measuring device for an electric toothbrush, the electric toothbrush comprising a handle and a brush head having opposing first and second sides, the measuring device for the electric toothbrush comprising: Support components; A first clamping member is disposed on the support assembly for clamping the brush handle; The swing amplitude detection component includes a first swing amplitude detection element and a second swing amplitude detection element, which are respectively disposed on the support component. The first swing amplitude detection element is used to emit a first laser towards a first side of the brush head, and the second swing amplitude detection element is used to emit a second laser towards the first side of the brush head to detect the swing amplitude of the brush head. The emission direction of the first laser and the emission direction of the second laser are set at an angle. A pressure-applying component is movably switchable between a first position and a second position on the support component; in the first position, the pressure-applying component is separated from the second side of the brush head, allowing the brush head to operate in an unloaded state; in the second position, the pressure-applying component abuts against the second side of the brush head and applies a preset simulated brushing pressure, allowing the brush head to operate in a loaded state. The control device described above is electrically connected to the first swing amplitude detection element, the second swing amplitude detection element, and the pressure application component, respectively.

[0015] The technical solution of this invention applies a preset simulated brushing pressure to the electric toothbrush head by setting a pressure-applying component, realistically reproducing the load state during actual use. Simultaneously, a first and a second amplitude detection component emit a first laser and a second laser to a first side of the brush head, respectively. Specifically, the emission directions of the first and second lasers are arranged at an angle, enabling the simultaneous acquisition of the first and second reflection signals formed by the brush head from two different spatial angles. This allows for a more comprehensive reflection of the surface motion characteristics under pressure during high-frequency vibration or complex oscillation of the brush head. Since a single-direction laser can only sense the displacement component along its optical axis, it is difficult to accurately characterize the actual oscillation amplitude of the brush head in three-dimensional space. The angled dual lasers create a non-parallel observation perspective. By analyzing the two reflection signals, the motion characteristics of the brush head in different directions are decoupled, improving the accuracy of amplitude calculation. Compared to existing technologies that suffer from amplitude distortion and data bias due to measurements under no-load conditions or using only a single laser beam, this invention, by applying simulated pressure and utilizing dual-laser angle detection, can achieve high-precision measurement of brush head amplitude under pressure, thereby improving the measurement accuracy and testing reliability of electric toothbrush brush head amplitude. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the measuring device for an electric toothbrush provided by the present invention; Figure 2 for Figure 1 A structural diagram from another angle; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 A flowchart of an embodiment of the measurement method for an electric toothbrush provided by the present invention; Figure 5 A flowchart of another embodiment of the measurement method for an electric toothbrush provided by the present invention; Figure 6 A flowchart of yet another embodiment of the measurement method for an electric toothbrush provided by the present invention; Figure 7 A flowchart of yet another embodiment of the measurement method for an electric toothbrush provided by the present invention; Figure 8 A flowchart of another embodiment of the measurement method for an electric toothbrush provided by the present invention; Figure 9 A flowchart of yet another embodiment of the measurement method for an electric toothbrush provided by the present invention; Figure 10 A flowchart of yet another embodiment of the measurement method for an electric toothbrush provided by the present invention; Figure 11 A schematic diagram of the circuit functional modules of an embodiment of the control device for an electric toothbrush provided by the present invention.

[0018] Explanation of icon numbers: 100. Measuring equipment; 10. Support assembly; 20. First clamping component; 30. Swing amplitude detection assembly; 31. First swing amplitude detection component; 32. Second swing amplitude detection component; 40. Pressure application assembly; 401. Fixing groove; 402. Detection groove; 41. Driving component; 42. Pressure detection component; 43. Pressure head; 44. Transparent component; 45. Clamping component; 46. Control device; 461. Processor; 462. Memory; 47. Display component; 50. First motion module; 51. Slide table; 511, guide protrusion; 512, first protrusion; 513, second protrusion; 52, slider; 60, second motion module; 61, first mounting component; 62, second mounting component; 63, lead screw; 64, slide rail; 70, locking module; 71, second clamping component; 72, locking component; 80, first guide component; 90, second guide component; 200, electric toothbrush; 210, brush handle; 220, brush head; x, first direction; y, second direction; z, third direction.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] In the research and development and performance evaluation of electric toothbrushes, accurately measuring the oscillation amplitude of the brush head under simulated actual brushing conditions is a crucial indicator for evaluating its cleaning effectiveness and user experience. However, current technologies for measuring the oscillation amplitude of electric toothbrush heads are typically performed under no-load or non-simulated real-world conditions, making it difficult to reflect the changes in brush head movement caused by pressure applied during actual brushing. Furthermore, due to the high-frequency vibration or oscillation of the brush head during operation and its complex motion trajectory, traditional contact measurement methods are prone to interfering with the normal movement of the brush head. Non-contact optical measurement methods, if using only a single-direction detection beam, struggle to accurately capture the true three-dimensional oscillation behavior of the brush head under pressure, thus affecting the accuracy of the oscillation amplitude data. Therefore, achieving high-precision measurement of the brush head oscillation amplitude while applying simulated brushing pressure has become a significant technical challenge in the field of electric toothbrush performance testing.

[0022] Therefore, the present invention proposes a measuring device 100 for an electric toothbrush 200, which aims to improve the measurement accuracy and testing reliability of the brush head 220 swing amplitude of the electric toothbrush 200.

[0023] Please see Figures 1 to 3 In one embodiment of the present invention, the electric toothbrush 200 includes a handle 210 and a brush head 220 having opposing first and second sides. The measuring device 100 of the electric toothbrush 200 includes: Support component 10; The first clamping member 20 is disposed on the support assembly 10 and is used to clamp the brush handle 210; The swing amplitude detection component 30 includes a first swing amplitude detection element 31 and a second swing amplitude detection element 32, which are respectively disposed on the support component 10. The first swing amplitude detection element 31 is used to emit a first laser towards the first side of the brush head 220, and the second swing amplitude detection element 32 is used to emit a second laser towards the first side of the brush head 220 to detect the swing amplitude of the brush head 220. The emission direction of the first laser and the emission direction of the second laser are set at an angle. The pressure application component 40 is movably switchable between a first position and a second position on the support component 10. In the first position, the pressure application component 40 is separated from the second side of the brush head 220, so that the brush head 220 operates in an unloaded state. In the second position, the pressure application component 40 abuts against the second side of the brush head 220 and applies a preset simulated brushing pressure, so that the brush head 220 operates in a loaded state.

[0024] In this embodiment, the measuring device 100 of the electric toothbrush 200 is mainly used to perform high-fidelity simulation and precise quantification of the swing amplitude of the brush head 220 of the electric toothbrush 200 in a laboratory or production line environment. The support component 10, as the basic structure of the entire measuring device, provides a stable mounting platform for the first clamping component 20, the swing amplitude detection component 30, and the pressure application component 40, ensuring that the relative positional relationship of each functional module remains unchanged during the test, thereby guaranteeing the consistency and repeatability of the measurement.

[0025] The first clamping member 20 is fixed to the support assembly 10 and is used to clamp the handle 210 of the electric toothbrush 200, so that the electric toothbrush 200 will not be displaced due to vibration or external force interference during the test, thereby avoiding interference with the swing amplitude test results. In one embodiment, as Figure 1 As shown, the first clamping member 20 may include clamping structures, and at least two clamping structures are provided. The at least two clamping structures are spaced apart to form clamping positions, which are suitable for clamping the handle 210 of the electric toothbrush 200.

[0026] The pressure application component 40 is movably switchable on the support component 10 and has two distinct working positions: when in the first position, the pressure application component 40 remains separated from the second side of the brush head 220, and the brush head 220 vibrates freely without any external resistance, making it easy to obtain the reference swing amplitude of the brush head 220; when switched to the second position, the pressure application component 40 abuts against the second side of the brush head 220 and applies a preset simulated brushing pressure, which corresponds to the reaction force generated by the teeth and gums on the bristles during the daily brushing process of a typical user, thereby reproducing the real usage load conditions in the test.

[0027] The amplitude detection component 30 includes a first amplitude detection element 31 and a second amplitude detection element 32, which are respectively disposed on the support component 10 and emit laser light towards the first side of the brush head 220 to detect the amplitude of the brush head 220. The first side of the brush head 220 is the side facing away from the bristles, and the second side is the side facing the bristles. The amplitude detection component 30 acquires the position change of the reflected light spot on the surface of the brush head 220 caused by the swing in real time through a non-contact optical method, thereby accurately reflecting its swing amplitude during operation. In one embodiment, the amplitude detection component 30 also includes a reflector and a detection ruler. The reflector is attached to the first side of the brush head 220. The first amplitude detection element 31 and the second amplitude detection element 32 are implemented using a laser emitter. The detection ruler is horizontally disposed between the reflector and the laser emitter, and has graduation lines and a perforation at a standard graduation position. In the detection state, the laser light emitted by the laser emitter passes through the perforation and illuminates the reflector, and after reflection, is projected onto the graduation lines of the detection ruler. As the brush head 220 swings, the reflector deflects accordingly, causing the position of the reflected light spot on the measuring scale to change. This change corresponds to the actual swing amplitude of the brush head 220. The swing amplitude of the brush head 220 can be indirectly obtained by reading the range of movement of the light spot on the scale line.

[0028] It is particularly important to note that the first amplitude detection element 31 emits a first laser beam towards the first side of the brush head 220, and controls the second amplitude detection element 32 to emit a second laser beam towards the first side of the brush head 220. The emission directions of the first and second laser beams are set at an angle. This is because when the brush head 220 swings under pressure, its movement includes not only reciprocating displacement along a fixed axis, but may also be accompanied by slight tilting or twisting. If only one direction of laser irradiation is used, the displacement of the reflected light spot on the detection scale can only reflect the projection change in that direction, and cannot fully characterize the overall swing of the brush head 220. By irradiating the same area of ​​the brush head 220 with two laser beams at an angle, the two reflected beams can form independent and interconnected light spot displacements on their respective detection scales. Combining the positional changes reflected by these two sets of light spot displacements, the actual swing amplitude of the brush head 220 under pressure can be more comprehensively restored, improving the accuracy and stability of the measurement results.

[0029] Through the above-mentioned structural integration, the same measuring device can switch between loaded and unloaded states and simultaneously acquire the oscillation amplitude of the brush head 220 under the corresponding working conditions. This solves the problem in the prior art that it is impossible to compare and analyze the load effect and the pressure is uncontrollable on the same testing device, and significantly improves the accuracy of the electric toothbrush 200 oscillation amplitude test and the realism of the load simulation.

[0030] like Figures 1 to 3 As shown, in one embodiment, the pressure application component 40 includes: Drive component 41 is provided on support component 10; The pressure head 43 is movably switchable between a first position and a second position on the drive member 41 for applying a preset simulated brushing pressure to the brush head 220; the drive member 41 is used to drive the pressure head 43 to separate from or abut against the second side.

[0031] In this embodiment, the driving component 41 serves as the power execution unit of the pressure application assembly 40. Its function is to drive the pressure head 43 to reciprocate along the third direction z, thereby achieving contact or separation with the second side of the brush head 220. The driving component 41 can be a linear drive mechanism such as a cylinder, electric push rod, or stepper motor with lead screw. Its installation position is fixed on the support assembly 10 to ensure stability and repeatability during operation. The pressure head 43 is integrated into the output end of the driving component 41 and directly faces the second side of the brush head 220, i.e., the side facing the bristles. When the drive unit 41 is in its initial state, the pressure head 43 is in the first position, maintaining a certain distance from the brush head 220. At this time, the brush head 220 can vibrate freely without external resistance, facilitating the acquisition of a reference swing amplitude under no-load conditions. When the drive unit 41 is activated and pushes the pressure head 43 forward to the second position, the pressure head 43 gently and stably abuts against the second side of the brush head 220 and applies a preset simulated brushing pressure. This preset simulated brushing pressure corresponds to the reaction force generated by the teeth and gums on the bristles during normal brushing by a typical user. Through the precise control of the stroke of the pressure head 43 by the drive unit 41, the pressure applied in each test can be kept consistent, thereby improving the repeatability and comparability of swing amplitude measurement under load conditions. At the same time, it avoids operational errors or pressure fluctuations caused by manual pressure application, making the load simulation closer to the real usage scenario.

[0032] like Figures 1 to 3 As shown, in one embodiment, the pressure application component 40 further includes: Pressure detection element 42 is disposed between drive element 41 and pressure head 43, and is used to detect the pressure applied to the second side by pressure head 43; Control device 46 is electrically connected to drive element 41 and pressure detection element 42; The display 47 is electrically connected to the control device 46, which controls the display 47 to display the pressure detected by the pressure detection element 42.

[0033] In this embodiment, the pressure detection element 42 is connected to both the drive element 41 and the pressure head 43. The pressure detection element 42 may integrate a force sensor or strain gauge, etc., to sense the transmitted force value in real time as the pressure head 43 abuts against the second side of the brush head 220 and applies a preset simulated brushing pressure. This force signal is then converted into an electrical signal and output to the control device 46. The control device 46 receives and processes this signal, and drives the display element 47 to visually present the currently applied pressure value in digital or graphical form. Operators can monitor and confirm in real time whether the applied load conforms to the preset simulated brushing pressure range, thereby ensuring the consistency and controllability of the load test conditions and further improving the comparability and reliability of the amplitude measurement results across different test batches or devices.

[0034] like Figures 1 to 3 As shown, in one embodiment, the pressure application component 40 further includes: Transparent component 44, pressure head 43 has a fixing groove 401, transparent component 44 is disposed in fixing groove 401, and the position of transparent component 44 corresponds to the position of pressure detection component 42; A camera is provided on the support assembly 10 and located on one side of the drive member 41. The camera is electrically connected to the control device 46. The pressure detection member 42 is provided with a detection groove 402. The camera is positioned facing the detection groove 402 and is used to capture the swing trajectory of the brush head 220 through the detection groove 402 and the transparent member 44.

[0035] In this embodiment, the pressure head 43, as the end-effector directly contacting the brush head 220, has a fixing groove 401 for mounting the transparent element 44. The transparent element 44 can be made of optical glass or a high-transmittance polymer material, possessing good light transmittance and mechanical stability. While withstanding the preset simulated brushing pressure, it will not obstruct the view or interfere with optical observation. The position of the transparent element 44 is aligned with the detection groove 402 inside the pressure detection element 42 in the optical path, allowing the camera arranged from one side of the support assembly 10 to pass sequentially through the detection groove 402 and the transparent element 44 along a straight field of view, clearly capturing the dynamic image above the transparent element 44, i.e., the area on the second side of the brush head 220. The camera can be a high-speed camera or other image acquisition device with high frame rate shooting capabilities, capable of continuously recording the movement of the brush head 220 during the high-frequency vibration of the electric toothbrush 200. Through post-processing image processing or real-time analysis software, the displacement change of the brush head 220 end within a unit of time can be extracted from the acquired continuous image sequence, thereby calculating its swing trajectory, swing amplitude range, and swing speed, among other parameters. This vision-based auxiliary measurement method not only complements the aforementioned amplitude detection component 30 with multi-source data, enhancing the reliability of test results, but also visually presents the deformation behavior and motion stability of the brush head 220 under load. It is particularly helpful in observing the coupling effect of bristle pressure on the motion characteristics of the brush head 220. Since the camera path passes through the detection slot 402 of the pressure detection component 42 and the transparent component 44 on the pressure application head 43, the entire optical path remains unobstructed under pressure. This allows for unobstructed observation of the brush head 220's true motion state even under simulated brushing pressure, effectively bridging the information gap between traditional contact loading and non-contact measurement, and providing more complete data support for dynamic performance evaluation under load conditions.

[0036] like Figures 1 to 3 As shown, in one embodiment, the pressure application component 40 further includes: Two clamping members 45 are arranged opposite each other along the second direction y on the side of the pressure head 43 away from the pressure detection member 42. One end of the two clamping members 45 along the first direction x is fixed to the pressure head 43, and the other end abuts against the transparent member 44 to lock the transparent member 44 in the fixing groove 401.

[0037] In this embodiment, a fixing groove 401 is formed on the side of the pressure head 43 facing the first direction x. This fixing groove 401 is used to embed the transparent part 44, so that its front face faces the second side of the brush head 220, providing a clear optical channel for camera observation. To ensure that the transparent part 44 remains stable during the test and does not shift or fall off due to device vibration or pressure action, two clamping members 45 are provided on the side of the pressure head 43 away from the pressure detection member 42. The two clamping members 45 are arranged opposite each other along the second direction y. One end of the two clamping members 45 along the first direction x is fixedly connected to the pressure head 43, and the other end abuts against the edge area of ​​the transparent part 44, thereby pressing the transparent part 44 and confining it within the fixing groove 401. In this way, the transparent part 44 can be prevented from loosening during high-frequency vibration or repeated pressure, and its central viewing window area used for imaging will not be obstructed, ensuring the reliability of the camera continuously and clearly capturing the swing trajectory of the brush head 220 through the transparent part 44. At the same time, since the clamping force is applied to the periphery of the transparent part 44 rather than its surface, the risk of optical distortion or material damage caused by local stress concentration can also be reduced.

[0038] like Figures 1 to 3 As shown, in one embodiment, the measuring device 100 of the electric toothbrush 200 further includes: A first motion module 50 is provided with a first clamping member 20 for driving the first clamping member 20 to reciprocate along a first direction x. The second motion module 60 is disposed on the support assembly 10. The second motion module 60 is provided with the first motion module 50, which is used to drive the first clamping member 20 to reciprocate along the second direction y.

[0039] In this embodiment, the first motion module 50 directly supports the first clamping member 20 and can drive it to move linearly back and forth along the first direction x; the second motion module 60 is fixed on the support component 10 and is used to install the entire first motion module 50, thereby driving the first clamping member 20 and the electric toothbrush 200 it clamps to move independently in a linear reciprocating motion along the second direction y. Through this hierarchical arrangement, the first clamping member 20 can achieve precise positioning at any position in the plane defined by the first direction x and the second direction y. This structural design allows the operator to flexibly adjust the position of the electric toothbrush 200 in the plane according to the relative layout of the swing detection component 30, the pressure application component 40 and the camera component, ensuring that the first side of the brush head 220 is accurately aligned with the laser incident point, while ensuring that the second side of the brush head 220 is precisely aligned with the force center located on the pressure application head 43 and the observation window of the transparent component 44. Especially when testing with different models or sizes of electric toothbrushes 200, this two-dimensional adjustment capability can effectively compensate for assembly deviations caused by differences in product shape, improving the versatility and repeatability of the testing device.

[0040] like Figures 1 to 3 As shown, in one embodiment, the first motion module 50 includes a slide table 51 and a slider 52 disposed on the slide table 51. The slide table 51 has two oppositely arranged guide protrusions 511 along the second direction y. The slider 52 has two first sliding grooves, which are slidably engaged with the two guide protrusions 511 respectively, so that the slider 52 can reciprocate relative to the slide table 51 along the first direction x. A first clamping member 20 is disposed on the slider 52. The second motion module 60 includes a first mounting member 61, a second mounting member 62, a lead screw 63, and two slide rails 64. The first mounting member 61 and the second mounting member 62 are spaced apart along the second direction y, and the two slide rails 64 are connected to the first mounting member 61 and the second mounting member 62. The second mounting members 62 are arranged between each other and extend along the first direction x. The lead screw 63 is connected between the first mounting member 61 and the second mounting member 62 and is located between the two slide rails 64 and is arranged opposite to the two slide rails 64. The slide table 51 has a first protrusion 512 and two second protrusions 513 on the side away from the sliding member 52. The first protrusion 512 has an internal thread that engages with the external thread of the lead screw 63. The two second protrusions 513 are respectively engaged with the two slide rails 64. When the lead screw 63 rotates, the slide table 51 moves along the second direction y through the engagement of the internal and external threads, driving the two second protrusions 513 to slide along the two slide rails 64, so that the slide table 51 reciprocates along the second direction y.

[0041] In this embodiment, the slider 52 in the first motion module 50 forms a sliding pair with two guide protrusions 511 extending along the second direction y on the slide table 51 through its first sliding groove, so that the slider 52 can slide along the first direction x on the surface of the slide table 51, and the first clamping member 20 fixed on the slider 52 moves synchronously, thereby driving the clamped electric toothbrush 200 to be finely adjusted along the first direction x. The second motion module 60 serves as the foundation platform supporting the entire first motion module 50. Through the coordinated action of the lead screw 63 and the slide rail 64, it achieves driving and guidance along the second direction y. The lead screw 63 is driven to rotate by an external motor or a manual knob. Its external thread engages with the internal thread of the first protrusion 512 at the bottom of the slide table 51, converting the rotational motion into linear displacement of the slide table 51 along the second direction y. The two second protrusions 513 on both sides of the slide table 51 slide in cooperation with two parallel slide rails 64, which not only provide stable support for the slide table 51, but also effectively limit its sway or shaking during the movement, ensuring the linearity of the overall movement trajectory and the repeatability of the positioning accuracy.

[0042] By integrating the first motion module 50 and the second motion module 60, the operator can independently control the position of the electric toothbrush 200 in the first x direction and the second y direction, aligning its brush head 220 with the laser incident point of the amplitude detection component 30, the force application center of the pressure application component 40, and the observation window of the transparent component 44. This is particularly suitable for testing electric toothbrushes 200 of different brands, models, or sizes, enabling rapid alignment calibration without changing the fixtures, thus improving the adaptability, testing efficiency, and data consistency of the testing device.

[0043] like Figures 1 to 3 As shown, in one embodiment, the measuring device 100 of the electric toothbrush 200 further includes: The locking module 70 includes a second clamping member 71 and a locking member 72. The second clamping member 71 is fixed to the side of the first mounting member 61 opposite to the second mounting member 62 and is arranged around the lead screw 63. The second clamping member 71 is provided with a threaded hole, and the locking member 72 passes through the threaded hole and is threadedly engaged with the threaded hole. The clamping force of the second clamping member 71 on the lead screw 63 increases with the depth of the locking member 72 screwed into the threaded hole, so as to restrict the rotation of the lead screw 63.

[0044] In this embodiment, the locking module 70 functions to lock the position of the lead screw 63, thereby preventing unexpected slight rotation due to device vibration, external disturbance, or reaction forces generated during testing after the position adjustment of the electric toothbrush 200 is completed. The second clamping member 71 is fixed to the side of the first mounting member 61 opposite to the second mounting member 62 and is arranged around the lead screw 63 in a wrapping manner. Its structure can be a split type or an elastic ring with an opening, and its internal contour is adapted to the outer peripheral surface of the lead screw 63. When the locking member 72 is screwed into the threaded hole, its end gradually applies radial pressure to the surface of the lead screw 63, causing the second clamping member 71 to elastically deform or tighten, thereby enhancing its clamping force on the lead screw 63. As the screwing depth of the locking member 72 increases, the clamping force gradually increases until it is sufficient to effectively suppress the free rotation of the lead screw 63. In this way, after the electric toothbrush 200 completes two-dimensional positioning, the entire first clamping member 20, together with the clamped electric toothbrush 200, can be stably maintained in the test position, avoiding the slide 51 from drifting in the second direction y due to the loosening of the lead screw 63, thereby ensuring that the brush head 220 is always accurately aligned with the laser incident point of the swing amplitude detection component 30, the force application center of the pressure application component 40, and the observation window of the transparent member 44 during the test.

[0045] like Figures 1 to 3 As shown, in one embodiment, the measuring device 100 of the electric toothbrush 200 further includes: A first guide member 80 is disposed on the support assembly 10 and extends along the first direction x. The first guide member 80 is slidably engaged with the swing amplitude detection assembly 30 to drive the swing amplitude detection assembly 30 to slide back and forth on the first guide member 80 along the first direction x.

[0046] In this embodiment, the first guide member 80 can be in the form of a guide rail, a slide groove, or parallel guide rods, and is fixedly installed on the support assembly 10, ensuring that its extension direction is consistent with the first direction x. The amplitude detection assembly 30 forms a sliding pair with the first guide member 80 through a slider, a sliding sleeve, or other adaptable structure, allowing it to move along the first direction x under the action of an external drive (such as a manual adjustment knob, a micro motor, or a lead screw mechanism). The operator can adjust the relative position of the amplitude detection assembly 30 in the first direction x according to the specific size of the electric toothbrush 200 being tested or the position of the brush head 220, thereby ensuring that the laser emitter is accurately aligned with the first side of the brush head 220 to obtain the optimal light path incident angle and reflected signal intensity.

[0047] like Figures 1 to 3 As shown, in one embodiment, the measuring device 100 of the electric toothbrush 200 further includes: The second guide member 90 extends along a third direction z. The second guide member 90 is slidably engaged with the first guide member 80 to drive the second guide member 90 to slide back and forth along the first direction x on the first guide member 80, and is slidably engaged with the swing amplitude detection component 30 to drive the swing amplitude detection component 30 to slide back and forth along the third direction z on the second guide member 90.

[0048] In this embodiment, the second guide member 90 serves as the motion carrier of the swing amplitude detection component 30 in the third direction z. Its overall structure can be in the form of a guide rail, a slide rod, or a support beam with a sliding groove, extending along the third direction z, which is perpendicular to the first direction x and the second direction y. The second guide member 90 forms a sliding connection with the first guide member 80 through its bottom, for example, through a slider, a sliding sleeve, or a fitting structure, allowing it to slide relative to the first guide member 80, thus enabling it to move as a whole in the first direction x under the guidance of the first guide member 80. Simultaneously, the swing amplitude detection component 30 is mounted on the second guide member 90, forming another set of sliding pairs, allowing the swing amplitude detection component 30 to be adjusted along the third direction z under the constraint of the second guide member 90. Through this cross-sliding structure, the swing amplitude detection component 30 obtains the ability to adjust its two-dimensional position within the plane defined by the first direction x and the third direction z. This design enhances the alignment flexibility of the laser emitter with the first side of the brush head 220: on the one hand, it can compensate for lateral offsets caused by different electric toothbrush 200 models along the first direction x; on the other hand, it can adjust the laser incident height along the third direction z to accommodate differences in the vertical installation position of the brush head 220, ensuring that the laser beam is always accurately projected onto the center area of ​​the reflector attached to the first side of the brush head 220. Especially when testing electric toothbrushes 200 with irregularly shaped handles 210, tilted brush necks, or non-standard brush head 220 layouts, this dual-degree-of-freedom adjustment mechanism can avoid the loss of reflected signals or measurement errors caused by optical path deviation, thereby ensuring the integrity and accuracy of amplitude data acquisition.

[0049] Based on the above hardware structure, the present invention also proposes a measurement method for an electric toothbrush 200.

[0050] Please see Figures 1 to 4 In one embodiment of the present invention, the measurement method of the electric toothbrush 200 includes: S100: Control the pressure application component to move from the first position to the second position, so that the pressure application component abuts against the second side of the brush head and applies a preset simulated brushing pressure to the brush head; S200: Control the first swing amplitude detection element to emit a first laser towards the first side of the brush head, and control the second swing amplitude detection element to emit a second laser towards the first side of the brush head, wherein the emission direction of the first laser and the emission direction of the second laser are set at an angle. S300: Acquire the first reflection signal generated by the brush head reflecting the first laser, and the second reflection signal generated by the brush head reflecting the second laser; S400. Determine the brush head oscillation amplitude corresponding to the preset simulated brushing pressure based on the first reflection signal and the second reflection signal.

[0051] In this embodiment, the above steps are executed by the control device 46 of the measuring device. The control device 46 first drives the drive component 41 in the pressure application assembly 40 to move the pressure head 43 from the first position to the second position until it abuts against the second side of the brush head 220. The control device 46 monitors the applied force in real time through the pressure detection component 42, ensuring that the drive stops once the preset simulated brushing pressure is reached, thus establishing a load condition during the test. Subsequently, the control device 46 activates the first amplitude detection component 31 and the second amplitude detection component 32, emitting a first laser and a second laser beam respectively towards the first side of the brush head 220. The emission directions of the two laser beams are set at an angle to form a non-collinear observation path. When the electric toothbrush 200 is running, the reflector attached to the first side of the brush head 220 deflects as the brush head 220 swings, causing the first and second laser beams to be reflected and form dynamically changing light spots on their respective detection scales. The control device 46 can obtain the position information of these two sets of reflected light spots, i.e., the first reflection signal and the second reflection signal, through an image sensor or a position-sensitive device. Because the two laser beams are incident at different angles, the displacement of their reflected light spots corresponds to the changes in the projection of the brush head 220 in different spatial directions. Based on the joint analysis of these two sets of reflected signals, the control device 46 calculates the actual swing amplitude of the brush head 220 under pressure. This method can avoid the underestimation or distortion of the swing amplitude caused by the angle limitation when measuring with lasers in a single direction, and improve the accuracy and reliability of the swing amplitude data under real-world load conditions.

[0052] like Figures 1 to 3 , Figure 5 As shown, in one embodiment, step S400 includes: S410. Based on the first reflected signal, obtain the first distance between the first side of the brush head and the detection ruler, and the first displacement of the first laser on the detection ruler; S420. Based on the second reflection signal, obtain the second distance between the first side of the brush head and the detection ruler, and the second displacement of the second laser on the detection ruler; S430. Calculate the first brush head amplitude based on the first distance, the first displacement, and the length of the brush head bristles, and calculate the second brush head amplitude based on the second distance, the second displacement, and the length of the brush head bristles, and take the larger of the first and second brush head amplitudes as the brush head amplitude corresponding to the preset simulated brushing pressure.

[0053] In this embodiment, the above sub-steps are executed by the control device 46 of the measuring device. The control device 46 first calculates the first distance between the first side of the brush head 220 and the detection ruler based on the position change of the light spot corresponding to the first reflected signal on the detection ruler, combined with the known geometric relationship between the laser emitter and the detection ruler. Simultaneously, it extracts the amount of movement of the light spot relative to the reference position as the first displacement. Similarly, based on the second reflected signal, the control device 46 obtains the second distance between the first side of the brush head 220 and the detection ruler, and the second displacement of the second laser on the detection ruler. Since the deflection of the first side of the brush head 220 during its swing affects the position of the reflected light spot through the reflector, and the actual moving end of the brush bristles is located on the second side of the brush head 220, the control device 46 needs to incorporate the length of the brush bristles into the geometric model when calculating the swing amplitude. Specifically, the control device 46 uses the first distance and the first displacement, combined with trigonometric relationships, to derive the equivalent swing amplitude of the brush bristle end in the first laser observation direction, denoted as the first brush head 220 swing amplitude. Similarly, it uses the second distance and the second displacement, combined with the brush bristle length, to derive the second brush head 220 swing amplitude. Considering that the brush head 220 may exhibit asymmetrical or tilted oscillations under pressure, and the oscillation amplitude measured in the two directions may differ, the control device 46 ultimately selects the larger value between the oscillation amplitude of the first brush head 220 and the oscillation amplitude of the second brush head 220 as the representative oscillation amplitude output of the brush head 220 under the preset simulated brushing pressure. This processing method helps to capture the maximum dynamic response of the brush head 220 under complex load conditions, avoids underestimation of the oscillation amplitude due to measurement from a single perspective, and thus more realistically reflects the actual performance of the electric toothbrush 200 under simulated usage conditions.

[0054] like Figures 1 to 3 , Figure 6 As shown, in one embodiment, step S100 includes: S110, The control drive unit drives the pressure head to move from the first position to the second position, so that the pressure head abuts against the second side of the brush head and applies a preset simulated brushing pressure to the brush head; S120. Obtain the pressure value applied by the pressure head to the second side of the brush head through the pressure detection element; S130. Adjust the output power of the drive unit according to the pressure value applied to the second side of the brush head by the pressure head until the pressure value applied to the second side of the brush head by the pressure head reaches the preset simulated brushing pressure.

[0055] In this embodiment, the above sub-steps are executed by the control device 46 of the measuring device. The control device 46 first sends a start command to the drive unit 41, driving the pressure head 43 to move from its initial first position toward the brush head 220 until it contacts the second side of the brush head 220 and begins to apply force. During the pressure application process, the pressure detection element 42, integrated between the drive unit 41 and the pressure head 43, senses the force transmitted from the pressure head 43 to the second side of the brush head 220 in real time and converts this force value into an electrical signal, feeding it back to the control device 46. Upon receiving this signal, the control device 46 compares it with a preset simulated brushing pressure. If the current pressure value does not reach the target value, it adjusts the output power of the drive unit 41, for example, by adjusting the air supply pressure of the cylinder, the current of the electric push rod, or the stepper motor's step size, to fine-tune the pushing force of the pressure head 43. This adjustment process can employ a closed-loop control strategy, continuously monitoring the pressure feedback and gradually correcting the drive output until the pressure value measured by the pressure detection element 42 stabilizes within the allowable error range of the preset simulated brushing pressure. This process ensures that the load conditions applied to the brush head 220 are consistent in each test, thus providing a repeatable and realistic force basis for subsequent swing amplitude measurements.

[0056] like Figures 1 to 3 , Figure 7 As shown, in one embodiment, the measurement method for the electric toothbrush 200 further includes: S500: Acquire the oscillation trajectory of the brush head captured by the camera; S600: Determine the oscillation speed of the brush head based on the obtained oscillation trajectory of the brush head.

[0057] In this embodiment, the above steps are performed by the control device 46 of the measuring device. When the pressure application component 40 is in the second position and the brush head 220 is in a pressurized operating state, the control device 46 activates the camera to continuously acquire images of the second side of the brush head 220 through the detection groove 402 of the pressure detection component 42 and the transparent part 44 on the pressure application head 43. Since the transparent part 44 and the detection groove 402 are aligned in the optical path, the camera can record the dynamic image of the brush head 220 during high-frequency vibration without obstruction. The control device 46 receives the image sequence output by the camera and identifies the spatial position changes of the brush head 220 end or preset feature points in continuous frames based on the image processing algorithm, thereby reconstructing the swing trajectory of the brush head 220 in the time dimension. Subsequently, the control device 46 calculates the instantaneous velocity of the brush head 220 at each moment or the average swing velocity within a complete cycle based on the displacement between adjacent time points in the trajectory and the corresponding time interval. This speed information can serve as supplementary data to the swing amplitude measured by the laser reflection method, enabling a more comprehensive evaluation of the dynamic performance of the brush head 220 under simulated brushing pressure.

[0058] like Figures 1 to 3 , Figure 8 As shown, in one embodiment, step S600 includes: S610. Extract the displacement sequence of preset feature points on the brush head within at least one oscillation cycle from the oscillation trajectory of the brush head. S620: Calculate the average linear velocity of preset feature points based on the displacement sequence and the shooting frame rate of the camera, and use the average linear velocity as the oscillation speed of the brush head.

[0059] In this embodiment, the above sub-steps are executed by the control device 46 of the measuring device. The control device 46 first processes the image sequence acquired by the camera, identifying and locking a fixed preset feature point on the brush head 220. This feature point can be a location with stable visual contrast, such as the edge of the brush head 220, the boundary of the reflector, or the root of the bristles. Subsequently, the control device 46 tracks the spatial coordinate changes of this preset feature point in consecutive image frames, extracting displacement data covering at least one complete oscillation cycle to form a displacement sequence arranged in chronological order. Each item in this displacement sequence corresponds to the position of a feature point in an image frame, and the Euclidean distance between adjacent positions is the actual movement path length within that time interval. Combining the known frame rate of the camera, the control device 46 can determine the time interval between adjacent frames and sum the path lengths of all adjacent displacement segments within the entire cycle, dividing by the total time to obtain the average linear velocity of the preset feature point within one oscillation cycle. This average linear velocity is used as a quantitative indicator characterizing the overall oscillation speed of the brush head 220, reflecting its response level under pressure. By introducing a speed calculation method based on visual trajectory, kinematic parameters that complement the swing amplitude data can be obtained without interfering with the movement of the brush head 220, thus enriching the dimensions of the electric toothbrush 200 performance evaluation.

[0060] like Figures 1 to 3 , Figure 9 As shown, in one embodiment, the measurement method for the electric toothbrush 200 further includes: S700, the pressure control component sequentially applies multiple different preset simulated brushing pressures; S800: For each preset simulated brushing pressure, execute the following steps: control the first amplitude detection element to emit a first laser towards the first side of the brush head, and control the second amplitude detection element to emit a second laser towards the first side of the brush head, with the emission direction of the first laser and the emission direction of the second laser forming an angle; acquire the first reflection signal generated by the brush head reflecting the first laser, and the second reflection signal generated by the brush head reflecting the second laser; determine the brush head amplitude corresponding to the preset simulated brushing pressure based on the first reflection signal and the second reflection signal, so as to obtain the pressure-amplitude relationship curve under different preset simulated brushing pressures.

[0061] In this embodiment, the above steps are executed by the control device 46 of the measuring device. The control device 46 first sets a set of incrementally or on-demand preset simulated brushing pressure values ​​as a test sequence. Then, for each pressure value in the sequence, the control device 46 sequentially drives the pressure application component 40 to adjust the force applied to the second side of the brush head 220, stabilizing it to the current target pressure. Under this pressure condition, the control device 46 simultaneously activates the first amplitude detection component 31 and the second amplitude detection component 32, emitting a first laser and a second laser at an angle to the first side of the brush head 220, and collecting two sets of reflected signals formed by the brush head 220. Based on these two sets of signals, the control device 46 calculates the amplitude of the brush head 220 corresponding to the current pressure according to the aforementioned amplitude calculation logic. After completing the measurement of one pressure point, the control device 46 automatically switches to the next preset simulated brushing pressure, repeating the complete process of pressure application, laser emission, signal acquisition, and amplitude calculation until all set pressure values ​​have been traversed. Finally, the control device 46 pairs and stores each pressure value with its corresponding amplitude result, and plots a pressure-amplitude relationship curve characterizing the dynamic response characteristics of the brush head 220. This curve can intuitively reflect the trend of the brush head 220's amplitude changing with external load, providing a quantitative basis for evaluating the cleaning performance stability of the electric toothbrush 200 under different user force application habits.

[0062] like Figures 1 to 3 , Figure 10 As shown, in one embodiment, the measurement method for the electric toothbrush 200 further includes: S900: The pressure application component alternates between at least two different preset simulated brushing pressures; S1000: For each preset simulated brushing pressure, execute the following steps: control the first amplitude detection element to emit a first laser towards the first side of the brush head, and control the second amplitude detection element to emit a second laser towards the first side of the brush head, with the emission direction of the first laser and the emission direction of the second laser forming an angle; acquire the first reflection signal generated by the brush head reflecting the first laser, and the second reflection signal generated by the brush head reflecting the second laser; determine the brush head amplitude corresponding to the preset simulated brushing pressure based on the first reflection signal and the second reflection signal, so as to obtain the pressure-amplitude relationship curve under different preset simulated brushing pressures.

[0063] In this embodiment, the above steps are executed by the control device 46 of the measuring device. The control device 46 first sets at least two different preset simulated brushing pressure values ​​and controls the pressure application component 40 to cycle between these pressure values. For example, it first applies a first pressure value and maintains it stably for a period of time, then switches to the second pressure value and maintains it stably as well. This process can be repeated multiple times if necessary. During each application of a specific preset simulated brushing pressure, the control device 46 simultaneously activates the first amplitude detection element 31 and the second amplitude detection element 32, causing them to emit a first laser and a second laser, respectively, at an angle, towards the first side of the brush head 220. Then, it collects two sets of reflected signals formed by the brush head 220 and calculates the amplitude of the brush head 220 corresponding to the current pressure based on these two sets of signals. By continuously executing the above detection and calculation process during alternating pressure application, the control device 46 can acquire amplitude data points under multiple pressure states. Finally, the control device 46 correlates and organizes each pressure value with its corresponding amplitude result, and generates a pressure-amplitude relationship curve reflecting the dynamic response characteristics of the brush head 220 under different load conditions. This alternating pressure method helps to verify the repeatability of the swing amplitude measurement and the stability of the system response. At the same time, it is closer to the dynamic pressure fluctuations caused by changes in hand movements during actual brushing, thereby improving the ability of the test results to map to real-world usage scenarios.

[0064] The present invention also proposes a control device 46, such as Figure 11 As shown, the control device 46 includes a processor 461 and a memory 462. The memory 462 stores the measurement control program of the electric toothbrush 200. When the processor 461 executes the measurement control program of the electric toothbrush 200, it implements the measurement method of the electric toothbrush 200 as described above. The specific structure of the measurement method of the electric toothbrush 200 refers to the above embodiments. Since this control device 46 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here.

[0065] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for measuring an electric toothbrush, characterized in that, A measuring device for an electric toothbrush, the electric toothbrush including a handle and a brush head having opposing first and second sides; the measuring device for the electric toothbrush including a pressure application assembly and an amplitude detection assembly, the amplitude detection assembly including a first amplitude detection element and a second amplitude detection element; the pressure application assembly having a first position separated from the second side of the brush head and a second position abutting against the second side of the brush head; the measuring method including: The pressure-applying component is controlled to move from the first position to the second position, so that the pressure-applying component abuts against the second side of the brush head and applies a preset simulated brushing pressure to the brush head; The first swing amplitude detection element is controlled to emit a first laser towards the first side of the brush head, and the second swing amplitude detection element is controlled to emit a second laser towards the first side of the brush head, wherein the emission direction of the first laser and the emission direction of the second laser are set at an angle. Acquire a first reflection signal generated by the brush head reflecting the first laser, and a second reflection signal generated by the brush head reflecting the second laser; Based on the first reflected signal and the second reflected signal, the brush head oscillation amplitude corresponding to the preset simulated brushing pressure is determined.

2. The measurement method for an electric toothbrush as described in claim 1, characterized in that, The swing amplitude detection component also includes a detection ruler, which is configured to be positioned opposite to the second side of the brush head; The step of determining the brush head oscillation amplitude corresponding to the preset simulated brushing pressure based on the first reflected signal and the second reflected signal includes: Based on the first reflected signal, the first distance between the first side of the brush head and the detection ruler, and the first displacement of the first laser on the detection ruler are obtained; Based on the second reflected signal, a second distance between the first side of the brush head and the detection ruler, and a second displacement of the second laser on the detection ruler are obtained; The first brush head swing amplitude is calculated based on the first distance, the first displacement, and the length of the brush head bristles. The second brush head swing amplitude is calculated based on the second distance, the second displacement, and the length of the brush head bristles. The larger of the first and second brush head swing amplitudes is taken as the brush head swing amplitude corresponding to the preset simulated brushing pressure.

3. The measurement method for an electric toothbrush as described in claim 1, characterized in that, The included angle is not less than 30 degrees and not greater than 60 degrees.

4. The measurement method for an electric toothbrush as described in claim 1, characterized in that, The pressure application assembly includes a driving component, a pressure detection component, and a pressure application head, wherein the pressure detection component connects the driving component and the pressure application head; The step of controlling the pressure-applying component to move from the first position to the second position, so that the pressure-applying component abuts against the second side of the brush head and applies a preset simulated brushing pressure to the brush head includes: The driving component is controlled to drive the pressure head to move from the first position to the second position, so that the pressure head abuts against the second side of the brush head and applies a preset simulated brushing pressure to the brush head; The pressure value applied by the pressure-applying head to the second side of the brush head is obtained through the pressure detection device; The output power of the drive unit is adjusted according to the pressure value applied to the second side of the brush head by the pressure head until the pressure value applied to the second side of the brush head by the pressure head reaches the preset simulated brushing pressure.

5. The measurement method for an electric toothbrush as described in claim 4, characterized in that, The pressure application assembly further includes a transparent component and a camera component; the pressure application head has a fixing groove, the transparent component is disposed in the fixing groove, and the position of the transparent component corresponds to the position of the pressure detection component; the pressure detection component has a detection groove, and the camera component is positioned facing the detection groove; The measurement method for the electric toothbrush also includes: The camera captures the oscillation trajectory of the brush head. The oscillation speed of the brush head is determined based on the obtained oscillation trajectory of the brush head.

6. The method for measuring an electric toothbrush as described in claim 5, characterized in that, Determining the oscillation speed of the brush head based on the obtained oscillation trajectory of the brush head includes: Extract the displacement sequence of preset feature points on the brush head within at least one oscillation cycle from the oscillation trajectory of the brush head; Based on the displacement sequence and the shooting frame rate of the camera, the average linear velocity of the preset feature points is calculated, and the average linear velocity is used as the oscillation speed of the brush head.

7. The measurement method for an electric toothbrush as described in claim 1, characterized in that, The measurement method for the electric toothbrush also includes: The pressure application component is controlled to sequentially apply multiple different preset simulated brushing pressures; For each preset simulated brushing pressure, the following steps are executed: controlling the first amplitude detection element to emit a first laser towards the first side of the brush head, and controlling the second amplitude detection element to emit a second laser towards the first side of the brush head, wherein the emission direction of the first laser and the emission direction of the second laser are set at an angle; acquiring the first reflection signal generated by the brush head reflecting the first laser, and the second reflection signal generated by the brush head reflecting the second laser; determining the brush head amplitude corresponding to the preset simulated brushing pressure based on the first reflection signal and the second reflection signal, so as to obtain the pressure-amplitude relationship curve under different preset simulated brushing pressures.

8. The method for measuring an electric toothbrush as described in claim 1, characterized in that, The measurement method for the electric toothbrush also includes: The pressure application component is controlled to alternately apply pressure between at least two different preset simulated brushing pressures; For each preset simulated brushing pressure, the following steps are executed: controlling the first amplitude detection element to emit a first laser towards the first side of the brush head, and controlling the second amplitude detection element to emit a second laser towards the first side of the brush head, wherein the emission direction of the first laser and the emission direction of the second laser are set at an angle; acquiring the first reflection signal generated by the brush head reflecting the first laser, and the second reflection signal generated by the brush head reflecting the second laser; determining the brush head amplitude corresponding to the preset simulated brushing pressure based on the first reflection signal and the second reflection signal, so as to obtain the pressure-amplitude relationship curve under different preset simulated brushing pressures.

9. A control device, characterized in that, The device includes a processor and a memory, wherein the memory stores a measurement control program for an electric toothbrush, and when the processor executes the measurement control program for the electric toothbrush, it implements the measurement method for the electric toothbrush as described in any one of claims 1 to 8.

10. A measuring device for an electric toothbrush, characterized in that, The electric toothbrush includes a handle and a brush head having opposing first and second sides. The measuring device for the electric toothbrush includes: Support components; A first clamping member is disposed on the support assembly for clamping the brush handle; The swing amplitude detection component includes a first swing amplitude detection element and a second swing amplitude detection element, which are respectively disposed on the support component. The first swing amplitude detection element is used to emit a first laser towards a first side of the brush head, and the second swing amplitude detection element is used to emit a second laser towards the first side of the brush head to detect the swing amplitude of the brush head. The emission direction of the first laser and the emission direction of the second laser are set at an angle. A pressure-applying component is movably switchable between a first position and a second position on the support component; in the first position, the pressure-applying component is separated from the second side of the brush head, allowing the brush head to operate in an unloaded state; in the second position, the pressure-applying component abuts against the second side of the brush head and applies a preset simulated brushing pressure, allowing the brush head to operate in a loaded state. The control device as described in claim 9 is electrically connected to the first swing amplitude detection element, the second swing amplitude detection element, and the pressure application component, respectively.

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