Electric toothbrush head pressure detection structure and electric toothbrush

Abstract

The embodiment of the utility model provides an electric toothbrush head pressure detection structure and an electric toothbrush. The pressure detection structure comprises a support, a control circuit board and a pressure sensor. The support is used for being arranged in a shell of the electric toothbrush, the first end of the support is used for containing a battery, and the second end of the support is used for containing a driving piece. The control circuit board is used for being fixed to the side, deviating from the brush head stress direction, of the support. The pressure sensor is fixed on the control circuit board; when the brush head is pressed, the support deforms under the action of pressure, so that the control circuit board is driven to deform correspondingly, and the sensor is used for detecting a pressure signal of the control circuit board. According to the pressure detection structure for the brush head of the electric toothbrush, the pressure detection function of the brush head of the electric toothbrush can be realized without adding a top pressure structure and other complex structures, modifying the motor design and pasting a sensor, and the pressure detection structure has the advantages of being simple in structure and convenient to maintain.

Description

Technical Field

[0001] The disclosed embodiments belong to the technical field of pressure detection, and specifically relate to an electric toothbrush head pressure detection structure and an electric toothbrush. Background Art

[0002] Electric toothbrushes are becoming more and more popular, and they are very effective in cleaning teeth. The working principle of electric toothbrushes is: relying on the motor to drive the toothbrush head to vibrate and sweep back and forth to clean teeth. At present, most brands of electric toothbrushes do not have a pressure detection function. The pressure detection function is used to remind users when they brush their teeth too hard to prevent wear. Only a few high-end brands have a pressure detection function.

[0003] At present, the general solution for detecting the pressure of electric toothbrush heads is to process a plane on the shaft of the electric toothbrush motor, paste a pressure sensor on it, and the brush head is subjected to force. The deformation of the brush handle and the motor shaft is transmitted to the pressure sensor, generating a pressure signal to detect the pressure of the brush head. In this solution, the motor needs to be processed, and the bonding process has high requirements. According to different electric toothbrush structures, the sensor needs to be customized and difficult to standardize; the overall cost of the solution is high. There are also some solutions that design a fulcrum at the front or middle of the motor bracket, and press the sensor at the tail or other areas of the motor to detect the pressure of the brush head. This solution has a complex structure and also has high requirements for assembly accuracy.

[0004] In view of the above problems, it is necessary to propose an electric toothbrush head pressure detection structure and an electric toothbrush that are reasonably designed and can effectively improve the above problems. Utility Model Content

[0005] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide an electric toothbrush head pressure detection structure and an electric toothbrush.

[0006] One aspect of an embodiment of the present disclosure provides a pressure detection structure for an electric toothbrush head, characterized in that it includes a bracket, a control circuit board and a pressure sensor;

[0007] The bracket is used to be arranged in the housing of the electric toothbrush, the first end of the bracket is used to accommodate the battery, and the second end of the bracket is used to accommodate the driving member;

[0008] The control circuit board is used to be fixed to a side of the bracket away from the force direction of the brush head;

[0009] The pressure sensor is fixed to the control circuit board; wherein,

[0010] When the brush head is subjected to pressure, the bracket is deformed under the pressure, thereby driving the control circuit board to deform accordingly. The sensor is used to detect the pressure signal of the control circuit board.

[0011] Optionally, the pressure sensor is soldered to the control circuit board through a surface mounting process.

[0012] Optionally, the pressure sensor is arranged in the maximum deformation area of ​​the control circuit board.

[0013] Optionally, the first end of the bracket is fixedly connected to the second end of the bracket on a side away from the force direction of the brush head to form a connection area;

[0014] The first end of the bracket and the second end of the bracket are disconnected on the side facing the force direction of the brush head to form a gap area corresponding to the connection area; wherein,

[0015] The maximum deformation area is the connection area.

[0016] Optionally, it is characterized in that a first fixing rib is provided at the first end of the bracket, a first slot corresponding to the first fixing rib is provided on the inner side of the shell, and the first fixing rib is fixed in the first slot.

[0017] Optionally, a second fixing rib is provided at the second end of the bracket, a second slot corresponding to the second fixing rib is provided on the inner side of the shell, and the second fixing rib is fixed in the second slot; wherein,

[0018] The second fixed rib position is reused as a force bearing fulcrum.

[0019] Optionally, the second fixing ribs are located on both sides of the bracket along the length direction of the driving member.

[0020] Optionally, the control circuit board is adhered to the bracket; or, the control circuit board is fixed to the bracket by fasteners.

[0021] Optionally, the control circuit board is a printed circuit board.

[0022] Another aspect of the embodiments of the present disclosure provides an electric toothbrush that adopts the electric toothbrush head pressure detection structure described above.

[0023] The electric toothbrush head pressure detection structure and electric toothbrush of the disclosed embodiment include a bracket, a control circuit board and a pressure sensor, wherein the control circuit board is used to be fixed to the side of the bracket away from the force direction of the brush head; the pressure sensor is fixed to the control circuit board; wherein, when the brush head is subjected to pressure, the bracket deforms under the pressure, thereby driving the control circuit board to deform accordingly, and the sensor is used to detect the pressure signal of the control circuit board. The electric toothbrush head pressure detection structure of the disclosed embodiment can realize the brush head pressure detection function of the electric toothbrush without adding complex structures such as top pressure, without modifying the motor design, and without pasting sensors, and has the advantages of simple structure and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a pressure detection structure of an electric toothbrush head according to an embodiment of the present disclosure;

[0025] Figure 2 This is a structural schematic diagram of a pressure detection structure for an electric toothbrush head according to another embodiment of the present disclosure;

[0026] Figure 3 It is a schematic structural diagram of a bracket of another embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] like Figure 1 and Figure 2 As shown, the embodiment of the present disclosure provides an electric toothbrush head pressure detection structure 100, including a bracket 110, a control circuit board 120 and a pressure sensor 130. Figure 1 and Figure 2 As shown, the electric toothbrush includes a housing 210, a driving member 220, a transmission shaft 230 and a brush head. The first end of the transmission shaft 230 is connected to the driving member 220, and the second end of the transmission shaft 230 is connected to the brush head. In this embodiment, the driving member 220 can be a motor, and more preferably, the driving member 220 can be a linear motor or a rotary motor. The driving member 220 drives the brush head to vibrate and sweep back and forth to clean the teeth.

[0029] The bracket 110 is used to be arranged in the housing 210 and fixedly connected to the housing 210. The first end of the bracket 110 accommodates a battery, and the second end of the bracket 110 accommodates a driving member 220. Specifically, a first accommodating chamber and a second accommodating chamber are formed in the bracket 110. The battery can be accommodated in the first accommodating chamber, and the driving member 220 can be accommodated in the second accommodating chamber.

[0030] The control circuit board 120 is used to be fixed on the side of the bracket 110 away from the force direction of the brush head. Among them, in this embodiment, the control circuit board 120 covers the top area of the bracket 110. Specifically, in this embodiment, as Figure 1 shown, F is the downward pressure received by the brush head, and the control circuit board 120 is fixed on the top of the bracket 110.

[0031] The pressure sensor 130 is fixed on the control circuit board 120. Specifically, when the brush head is under pressure, the bracket 110 deforms under the action of the pressure, thereby driving the control circuit board 120 to deform correspondingly, so that the pressure sensor 130 generates an electrical signal and transmits it to the signal processing chip on the control circuit board 120 for processing. The pressure sensor 130 is used to detect the pressure signal of the control circuit board, and finally the detection function of the brush head pressure of the pressure sensor is realized.

[0032] In the brush head pressure detection structure of the embodiment of the present disclosure, when the brush head is under pressure, the bracket deforms under the action of the pressure, thereby driving the control circuit board to deform correspondingly. The pressure sensor is used to detect the pressure signal of the control circuit board. This brush head pressure detection structure can realize the brush head pressure detection function of the electric toothbrush without adding complex structures such as top pressure, without modifying the motor design, and without pasting sensors. It has the advantages of simple structure and easy maintenance, and can be applied to sonic motors, servo motors with 360-degree rotating shafts, and other types of motors.

[0033] Exemplarily, the pressure sensor 130 is welded to the control circuit board 120 by a surface mount process, and can detect the deformation pressure signal of the control circuit board 120, thereby realizing the detection of the pressure of the brush head. Without adding complex structures such as top pressure, without modifying the motor design, and without pasting sensors, the brush head pressure detection function of the electric toothbrush can be realized, and it has the advantages of simple structure and easy maintenance

[0034] Exemplarily, the pressure sensor 130 is arranged in the maximum deformation area of the control circuit board 120 so that the pressure signal sensed by the pressure sensor 130 is the largest, increasing the sensitivity of the pressure sensor.

[0035] Exemplarily, as Figure 1 shown, the first end of the bracket 110 and the second end of the bracket 110 are fixedly connected on the side away from the force direction of the brush head, forming a connection area A. Specifically, as Figure 3 shown, in this embodiment, the first end of the bracket 110 and the second end of the bracket 110 are fixedly connected on the top side of the bracket 110, forming a connection area A.

[0036] The first end of the bracket 110 and the second end of the bracket 110 are disconnected on the side facing the force direction of the brush head, forming a gap region B corresponding to the connection region A. Specifically, as Figure 3 shown, in this embodiment, the first end of the bracket 110 and the second end of the bracket 110 are disconnected at the bottom side of the bracket 110, forming a gap region B corresponding to the connection region A.

[0037] Among them, the maximum deformation region is the connection region A. That is to say, when the brush head is under pressure, the bracket 110 deforms the most at the connection region A, and correspondingly, the control circuit board 120 deforms the most at the connection region A, so that the pressure signal sensed by the pressure sensor 130 is the largest, increasing the sensitivity of the pressure sensor.

[0038] It should be noted that there is no specific limitation on the maximum deformation region of the bracket 110, and it can be adjusted according to the actual structure of the bracket 110.

[0039] Exemplarily, in one embodiment, the first end of the bracket 110 is provided with a first fixing rib position, and the inner side of the housing 210 is provided with a first slot corresponding to the first fixing rib position, and the first fixing rib position is fixed in the first slot. That is to say, the second end of the bracket 110 is not provided with a fixing rib position, and the bracket 110 is fixed in the first slot of the housing 210 through the first fixing rib position provided at the first end, thereby fixing the bracket 110 to the housing 210.

[0040] In this embodiment, as Figure 1 shown, the second end of the bracket 110 has no force-bearing fulcrum. When the brush head is under a downward pressure, the second end of the bracket 110 is pressed and deformed downward, driving the control circuit board 120 to deform, and the pressure sensor 130 generates a pressure signal, realizing the function of detecting the brush head pressure.

[0041] Exemplarily, in another embodiment, the second end of the bracket 110 is provided with a second fixing rib position, and the inner side of the housing 210 is provided with a second slot corresponding to the second fixing rib position, and the second fixing rib position is fixed in the second slot to fix the bracket 110 in the housing 210.

[0042] Among them, the second fixing rib position is reused as the force-bearing fulcrum C. Specifically, in the embodiment, the second fixing rib is located on both sides of the bracket 110 along the length direction of the driving member 220. As Figure 1 shown, the second fixing rib position is located on the front and rear sides of the second end of the bracket 110.

[0043] In this embodiment, as Figure 2As shown in the figure, the second end of the bracket 110 is provided with a second fixed rib position as a force-bearing fulcrum. When a downward pressure is applied to the brush head, the second end portion of the bracket 110 is compressed and deformed downward. Under the action of the force-bearing fulcrum C, the bracket 110 in the rear section of the force-bearing fulcrum C is deformed upward, driving the control circuit board 120 to deform, and the pressure sensor 130 generates a pressure signal, realizing the function of detecting the pressure of the brush head.

[0044] Exemplarily, in this embodiment, the control circuit board 120 can be adhered to the bracket 110 through an adhesive layer. Alternatively, the control circuit board 120 can also be fixed to the bracket 110 through fasteners, that is to say, the control circuit board 120 can be fixed to the bracket 110 by screws.

[0045] It should be noted that the fixing method of the control circuit board 120 is not specifically limited in this embodiment and can be selected according to actual needs.

[0046] Exemplarily, in this embodiment, the control circuit board 120 is a printed circuit board. Of course, the control circuit board 120 can be other types of circuit boards and can be selected according to actual needs.

[0047] Exemplarily, in this embodiment, the pressure sensor 130 can be a piezoresistive sensor and can have a single-bridge, half-bridge or full-bridge Wheatstone bridge structure. The pressure sensor 130 can also be a piezoelectric sensor or a strain gauge sensor or other pressure sensors.

[0048] It should be noted that the type of the pressure sensor 130 is not limited in this embodiment and can be selected according to actual needs.

[0049] Another aspect of the embodiments of the present disclosure provides an electric toothbrush that adopts the electric toothbrush head pressure detection structure 100 described above. The specific structure of the electric toothbrush head pressure detection structure 100 has been described in detail above and will not be repeated here. It can be selected according to actual needs.

[0050] The electric toothbrush of the embodiments of the present disclosure adopts the electric toothbrush head pressure detection structure described above. Without adding complex structures such as top pressure, without modifying the motor design, and without pasting sensors, the function of detecting the pressure of the electric toothbrush head can be realized, and it has the advantages of simple structure and easy maintenance.

[0051] It is understandable that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the embodiments of the present disclosure. However, the embodiments of the present disclosure are not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the embodiments of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the embodiments of the present disclosure.

Claims

1. An electric toothbrush head pressure detection structure, characterized in that, Includes bracket, control circuit board and pressure sensor; The bracket is used to be arranged in the housing of the electric toothbrush, the first end of the bracket is used to accommodate the battery, and the second end of the bracket is used to accommodate the driving member; The control circuit board is used to be fixed to a side of the bracket away from the force direction of the brush head; The pressure sensor is soldered to the control circuit board by surface mounting technology; wherein, When the brush head is subjected to pressure, the bracket is deformed under the pressure, thereby driving the control circuit board to deform accordingly. The sensor is used to detect the pressure signal of the control circuit board.

2. The electric toothbrush head pressure detection structure according to claim 1, characterized in that, The pressure sensor is arranged in the maximum deformation area of ​​the control circuit board.

3. The electric toothbrush head pressure detection structure according to claim 2, wherein, The first end of the bracket is fixedly connected to the second end of the bracket on a side away from the force direction of the brush head to form a connection area; The first end of the bracket and the second end of the bracket are disconnected on the side facing the force direction of the brush head to form a gap area corresponding to the connection area; wherein, The maximum deformation area is the connection area.

4. The electric toothbrush head pressure detection structure according to any one of claims 1 to 3, characterized in that, A first fixing rib is disposed at the first end of the bracket, and a first slot corresponding to the first fixing rib is disposed on the inner side of the shell, and the first fixing rib is fixed in the first slot.

5. The electric toothbrush head pressure detection structure according to claim 4, wherein The second end of the bracket is provided with a second fixing rib, the inner side of the shell is provided with a second slot corresponding to the second fixing rib, and the second fixing rib is fixed in the second slot; wherein, The second fixed rib position is reused as a force bearing fulcrum.

6. The electric toothbrush head pressure detection structure according to claim 5, characterized in that The second fixing ribs are located on both sides of the bracket along the length direction of the driving member.

7. The electric toothbrush head pressure detection structure according to any one of claims 1 to 3, characterized in that, The control circuit board is adhered to the bracket; or, the control circuit board is fixed to the bracket by a fastener.

8. The electric toothbrush head pressure detection structure according to any one of claims 1 to 3, characterized in that The control circuit board is a printed circuit board.

9. An electric toothbrush, characterized in that, The electric toothbrush head pressure detection structure according to any one of claims 1 to 8 is adopted.

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