Electric toothbrush

Abstract

The invention discloses an electric toothbrush. The electric toothbrush comprises a brush head and a brush handle, the brush handle comprises a testing plate and a light reflecting plate, the testing plate is connected with the brush head, and the light reflecting plate and the testing plate are arranged in parallel; the test plate deforms in a first direction pointing to the light reflecting plate along the test plate under the stress action of the brush head; the first direction intersects with the test board; a light source emitting end and a light source receiving end are arranged on the test plate, are both positioned on one side, facing the light reflecting plate, of the test plate, and are respectively positioned on two sides of a deformation center line of the test plate; the light source reflecting plate is used for reflecting light beams emitted by the light source emitting end to the test plate; the test plate is configured to control the light source transmitting end to emit light beams to the light reflecting plate at the first time, control the light source receiving end to receive the light beams, obtain the second time when the light source receiving end receives the light beams, and determine the current stress value of the electric toothbrush according to the first time and the second time.

Description

Technical Field

[0001] The present invention relates to the technical field of daily necessities, and in particular to an electric toothbrush. Background Art

[0002] Currently, toothbrushes on the market are divided into ordinary toothbrushes and electric toothbrushes. Ordinary toothbrushes are composed of a brush head, a brush handle, and bristles, while electric toothbrushes are composed of batteries, motors, toothbrush heads, control circuits, and shells. Currently, most high-end electric toothbrushes use built-in travel switches to achieve pressure sensing, which can help avoid excessive brushing force and damage to teeth. However, this method cannot obtain accurate data on the brushing force itself. Summary of the invention

[0003] The present invention provides an electric toothbrush which can improve the accuracy and reliability of determining the current force value.

[0004] The present invention provides an electric toothbrush, comprising:

[0005] Brush head;

[0006] The brush handle comprises a test plate and a light reflecting plate, wherein the test plate is connected to the brush head, and the light reflecting plate is arranged parallel to the test plate; under the force applied to the brush head, the test plate is deformed in a first direction from the test plate to the light reflecting plate; the first direction intersects with the test plate;

[0007] The test board is provided with a light source transmitting end and a light source receiving end, both of which are located on the side of the test board facing the light reflecting plate, and the light source transmitting end and the light source receiving end are respectively located on both sides of the deformation center line of the test board; the light source reflecting plate is used to reflect the light beam emitted by the light source transmitting end to the test board;

[0008] The test board is configured to: control the light source emitting end to emit the light beam to the light reflecting plate at a first time, and control the light source receiving end to receive the light beam, and obtain a second time when the light source receiving end receives the light beam, and determine the current force value of the electric toothbrush according to the first time and the second time.

[0009] Optionally, the test board is specifically configured as:

[0010] Calculate the difference between the second time and the first time, and use the difference as the current duration;

[0011] Determine the current transmission distance of the light beam from the light source transmitting end to the light source receiving end according to the current duration and the transmission speed of the light beam between the test plate and the light reflecting plate;

[0012] The current force value of the electric toothbrush is determined according to the current transmission distance.

[0013] Optionally, the test board is specifically configured to take the product of the current duration and the transmission speed as the current transmission distance.

[0014] Optionally, the test board is specifically configured to: based on a mapping relationship between distance and set force value, determine the set force value corresponding to the current transmission distance as the current force value.

[0015] Optionally, the electric toothbrush also includes:

[0016] An alarm module is electrically connected to the test board; the test board is also used to control the working state of the alarm module according to the current force value.

[0017] Optionally, the test board is specifically configured as:

[0018] After determining the current force value, determining whether the current force value is greater than a preset force value;

[0019] If the current force value is greater than the preset force value, the alarm module is controlled to sound an alarm.

[0020] Optionally, the alarm module includes an indicator light.

[0021] Optionally, the electric toothbrush also includes:

[0022] A display module is electrically connected to the test board; the test board is also used to transmit the current force value to the display module for display after determining the current force value.

[0023] The technical solution provided by the present invention is as follows: a light reflecting plate and a test plate connected to a brush head are arranged in an electric toothbrush; during the use of the electric toothbrush, the test plate produces different degrees of deformation under the action of the force on the brush head; a light source emitting end in the test plate is controlled to emit a light beam to the light reflecting plate at a first time, the light beam is reflected between the light reflecting plate and the test plate, and is finally received by a light source receiving end in the test plate, and a second time when the light source receiving end receives the light beam is obtained, and the degree of deformation of the test plate under the force on the brush head is determined based on the second time and the first time, thereby determining the current force value of the electric toothbrush, thereby improving the accuracy and reliability of determining the current force value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of the structure of an electric toothbrush provided by an embodiment of the present invention;

[0026] Figure 2 A top view of a test board provided by an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of a deformation structure of a test board provided by an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of the structure of another electric toothbrush provided by an embodiment of the present invention;

[0029] Figure 5 A schematic structural diagram of another electric toothbrush provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] Figure 1 A schematic diagram of the structure of an electric toothbrush provided by an embodiment of the present invention, Figure 2 A top view of a test board provided in an embodiment of the present invention, see Figure 1 and Figure 2, the electric toothbrush comprises a brush head 1 and a brush handle 2. The brush handle 2 comprises a test plate 21 and a light reflecting plate 22, the test plate 21 is connected to the brush head 1, and the light reflecting plate 22 is arranged parallel to the test plate 21; under the force of the brush head 1, the test plate 21 is deformed in a first direction X from the test plate 21 to the light reflecting plate 22; the first direction X intersects with the test plate 21. A light source emitting end A and a light source receiving end B are arranged on the test plate 21, the light source emitting end A and the light source receiving end B are respectively located on the side of the test plate 21 facing the light reflecting plate 22, and the light source emitting end A and the light source receiving end B are respectively located on both sides of the deformation center line O-O' of the test plate 21; the light reflecting plate is used to reflect the light beam emitted by the light source emitting end A to the test plate 21. The test board 21 is configured to: control the light source emitting end A to emit a light beam to the light reflecting plate 22 at a first time, and control the light source receiving end B to receive the light beam, and obtain the second time when the light source receiving end B receives the light beam, and determine the current force value of the electric toothbrush based on the first time and the second time.

[0032] It should be noted that the connection method between the test plate 21 and the brush head 1 can be set according to actual needs. On the basis that the test plate 21 can be deformed under the force transmitted by the brush head 1, the embodiment of the present invention does not limit the connection method between the test plate 21 and the brush head 1. In an exemplary embodiment, the brush handle 2 also includes a motor 3 and a transmission shaft 31. The motor 3 drives the brush head 1 to vibrate or rotate through the transmission shaft 31, thereby achieving the effect of cleaning teeth. The test plate 21 can be fixedly connected to the motor 3. When the brush head 1 contacts the teeth, the force pressing the brush head 1 can be reversely transmitted to the test plate 21 through the transmission shaft 31 and the motor 3. Under this force, the test plate 21 will produce different degrees of deformation.

[0033] Among them, the light source emitting end A may include a first light emitting diode or other device that can emit a light beam, the light source receiving end B may include a second light emitting diode or other device that can receive a light beam, the light reflecting plate 22 includes materials such as an aluminum plate, the test board 21 may be a circuit board, etc., and can be set according to actual needs, and no specific limitation is made here.

[0034] Specifically, under the force transmitted from the brush head 1 to the test plate 21, the deformation of the area located at the deformation center line O-O' in the test plate 21 is greater than the deformation of other areas. When the light source emitting end A emits a light beam, the light beam reflects back and forth between the test plate 21 and the light reflecting plate 22, that is, the light beam emitted from the light source emitting end A first enters the surface of the light reflecting plate 22, and then is reflected from the light reflecting plate 22 to the surface of the test plate 21, and finally reflects to the light source receiving end B. Since the deformation amount of the deformation center line O-O' under the force value of the brush head 1 is large or the largest, by arranging the light source emitting end A and the light source receiving end B on both sides of the deformation center line O-O', respectively, so that the light beam emitted from the light source emitting end A can pass through the area where the deformation center line O-O' is located, when the current force value is determined according to the first time and the second time, the calculation accuracy of the current force value can be improved.

[0035] The test board 21 is provided with a control circuit, which can control the light source transmitting end A to emit a light beam to the light reflecting plate 22 at a first time, and then obtain the second time when the light source receiving end B receives the light beam, and the current time difference between the second time and the first time can be calculated. Based on the mapping relationship between the time difference and the force value, the force value corresponding to the current time difference is used as the current force value to improve the reliability and accuracy of the determination of the current force value. Among them, the mapping relationship between the time difference and the force value can be a curve chart or a table, which can be measured according to the experiment. Alternatively, the current time difference can be substituted into the calculation formula of the force value for calculation, and then the current force value can be determined. When the test board 21 is not deformed, the time difference between the second time and the first time is a fixed value. When the test board 21 is deformed to different degrees, the time difference between the second time and the first time is different. Therefore, the current force value of the electric toothbrush can be determined according to the difference between the first time and the second time. The greater the deformation degree of the test plate 21 toward the light reflecting plate 22, the shorter the transmission distance of the light beam from the light source emitting end A to the light source receiving end B, the smaller the difference between the second time and the first time, and the greater the current force value.

[0036] The technical solution of the embodiment of the present invention is as follows: a light reflecting plate and a test plate connected to the brush head are arranged in the electric toothbrush. During the use of the electric toothbrush, the test plate produces different degrees of deformation under the action of the force on the brush head; the light source emitting end in the test plate is controlled to emit a light beam to the light reflecting plate at a first time, the light beam is reflected between the light reflecting plate and the test plate, and is finally received by the light source receiving end in the test plate, and the second time when the light source receiving end receives the light beam is obtained. According to the second time and the first time, the deformation degree of the test plate under the force on the brush head is determined, and then the current force value of the electric toothbrush is determined, thereby improving the accuracy and reliability of determining the current force value.

[0037] It is understandable that the above only shows a method for determining the current force value based on the first time and the second time. The method for determining the current force value based on the first time and the second time may be other. In an optional embodiment, the test board 21 is specifically configured to: calculate the difference between the second time and the first time, and use the difference as the current duration; determine the current transmission distance of the light beam from the light source transmitting end A to the light source receiving end B based on the current duration and the transmission speed of the light beam between the test board 21 and the light reflecting plate 22; and determine the current force value of the electric toothbrush based on the current transmission distance.

[0038] The current duration indicates the duration of the light beam provided by the light source transmitting end A being transmitted from the light source transmitting end A to the light source receiving end B. The medium between the test board 21 and the light reflecting plate 22 may be air or other transmission medium, which may be set according to actual needs. To simplify the structure, the medium between the test board 21 and the light reflecting plate 22 may be set to air, and the transmission rate of the light beam in the air may be approximately equal to the speed of light.

[0039] Specifically, Figure 3 A schematic diagram of a deformation structure of a test board provided in an embodiment of the present invention, referring to Figure 1 and Figure 3 , Figure 1 The test plate 21 in the figure did not deform. Figure 3 The test board 21 in the image is deformed toward the light reflecting surface 22, and the light beam is Figure 1 The transmission distance from the light source transmitting end A to the light source receiving end B is greater than the light beam in Figure 3 The transmission distance from the light source transmitting end A to the light source receiving end B in the transmission distance can be calculated. Therefore, the deformation of the test plate 21 can be determined by calculating the current transmission distance, and then the current force value can be determined. Since the distance is equal to the speed multiplied by the time, the product of the current duration and the transmission speed is used as the current transmission distance to improve the calculation accuracy of the current transmission distance. After that, based on the corresponding relationship between the transmission distance and the force value, the current force value of the electric toothbrush can be determined according to the current transmission distance, thereby improving the reliability of determining the current force value.

[0040] Optionally, the test board 21 is specifically configured to: based on a mapping relationship between the distance and the set force value, determine the set force value corresponding to the current transmission distance as the current force value.

[0041] The mapping relationship may be a curve diagram of the distance and the set force value or a corresponding table of the distance and the set force value, etc., which may be obtained through experiments or experience.

[0042] Specifically, when the mapping relationship is a curve graph of distance and set force value, after obtaining the current transmission distance, the curve graph of distance and set force value can be directly compared to determine the set force value on the curve graph corresponding to the current transmission distance as the current force value. Alternatively, when the mapping relationship is a corresponding table of distance and set force value, after obtaining the current transmission distance, the table can be directly looked up to obtain the set force value corresponding to the current transmission distance, and the set force value can be determined as the current force value.

[0043] Optional, Figure 4 A schematic diagram of the structure of another electric toothbrush provided in an embodiment of the present invention is shown in FIG. Figure 4 As shown, the electric toothbrush further includes an alarm module 23, which is electrically connected to the test board 21; the test board 21 is also used to control the working state of the alarm module 23 according to the current force value.

[0044] The alarm module 23 may include a light emitting element or a buzzer, etc., which may be set according to actual needs. Optionally, the alarm module 23 includes an indicator light, which may be arranged around the central axis of the brush handle 2 and be a part of the brush handle 2, so that the user can observe the flashing of the indicator light.

[0045] Specifically, after determining the current force value, the test board 21 can control the alarm module 23 to be in an alarm state according to the magnitude of the current force value to remind the user of the current force condition of the brush head, and then allow the user to adjust the force applied to the brush head according to the alarm, thereby improving the user's usage experience.

[0046] Optionally, the test board 21 is specifically configured to: after determining the current force value, determine whether the current force value is greater than a preset force value; if the current force value is greater than the preset force value, control the alarm module 23 to sound an alarm.

[0047] The preset force value may be a fixed value, which may be set according to the type or parameter of the electric toothbrush, and is not specifically limited here. For example, the preset force value of a children's electric toothbrush is smaller than the preset force value of an adult electric toothbrush.

[0048] Specifically, if the current force value is greater than the preset force value, it means that the force applied by the current user to the brush head 1 is large, and the brush head 1 may damage the teeth, or the cleaning effect on the teeth is poor. At this time, the alarm module 23 can be controlled to alarm to remind the user to reduce the force and improve the cleaning effect of the electric toothbrush.

[0049] Optional, Figure 5 A schematic diagram of the structure of another electric toothbrush provided by an embodiment of the present invention is shown in FIG. Figure 5As shown, the electric toothbrush also includes a display module 24, which is electrically connected to the test board 21; the test board 21 is also used to transmit the current force value to the display module 24 for display after determining the current force value.

[0050] The display module 24 includes devices for display such as a display panel, which can be configured according to actual needs and is not specifically limited here.

[0051] Specifically, by setting up a display module 24, after determining the current force value, the test board 21 can transmit the current force value to the display module 24, so that the display module 24 can display it, which is convenient for the user to observe and determine the current force situation, and then adjust the force applied to the brush head 1 according to the current force value, thereby improving the cleaning effect.

[0052] It should be noted that the electric toothbrush has an optimal force value. When the brush head receives the optimal force value, the cleaning effect on the teeth is the best. By setting the display module 24, the user can determine the difference between the current force value and the optimal force value according to the displayed value, and then increase or decrease the force applied to the brush head. For example, if the current force value is less than the optimal force value, the user can increase the force applied to the brush head to maintain the currently applied force when the adjusted current force value is close to or equal to the optimal force value. If the current force value is greater than the optimal force value, the user can reduce the force applied to the brush head to maintain the currently applied force when the adjusted current force value is close to or equal to the optimal force value.

[0053] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An electric toothbrush, characterized in that: include: Brush head; The brush handle comprises a test plate and a light reflecting plate, wherein the test plate is connected to the brush head, and the light reflecting plate is arranged parallel to the test plate; under the force applied to the brush head, the test plate is deformed in a first direction from the test plate to the light reflecting plate; the first direction intersects with the test plate; The test board is provided with a light source transmitting end and a light source receiving end, both of which are located on the side of the test board facing the light reflecting plate, and the light source transmitting end and the light source receiving end are respectively located on both sides of the deformation center line of the test board; the light source reflecting plate is used to reflect the light beam emitted by the light source transmitting end to the test board; The test board is configured to: control the light source emitting end to emit the light beam to the light reflecting plate at a first time, and control the light source receiving end to receive the light beam, and obtain a second time when the light source receiving end receives the light beam, and determine the current force value of the electric toothbrush according to the first time and the second time.

2. The electric toothbrush according to claim 1, characterized in that: The test board is specifically configured as follows: Calculate the difference between the second time and the first time, and use the difference as the current duration; Determine the current transmission distance of the light beam from the light source transmitting end to the light source receiving end according to the current duration and the transmission speed of the light beam between the test plate and the light reflecting plate; The current force value of the electric toothbrush is determined according to the current transmission distance.

3. The electric toothbrush according to claim 2, characterized in that: The test board is specifically configured to use the product of the current duration and the transmission speed as the current transmission distance.

4. The electric toothbrush according to claim 2, characterized in that: The test board is specifically configured to: based on a mapping relationship between distance and set force value, determine the set force value corresponding to the current transmission distance as the current force value.

5. The electric toothbrush according to claim 1, characterized in that: Also includes: An alarm module is electrically connected to the test board; the test board is also used to control the working state of the alarm module according to the current force value.

6. The electric toothbrush according to claim 5, characterized in that: The test board is specifically configured as follows: After determining the current force value, determining whether the current force value is greater than a preset force value; If the current force value is greater than the preset force value, the alarm module is controlled to sound an alarm.

7. The electric toothbrush according to claim 5, characterized in that: The alarm module includes an indicator light.

8. The electric toothbrush according to claim 1, characterized in that: Also includes: A display module is electrically connected to the test board; the test board is also used to transmit the current force value to the display module for display after determining the current force value.

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