Toothbrush

Abstract

The utility model discloses a toothbrush which comprises a pressure sensing assembly, a brush head, a brush rod and a handle, wherein the brush head, the brush rod and the handle are sequentially connected. The pressure sensing assembly comprises a strain gauge and a force transmission plate which are arranged in the brush rod. Wherein the force transmission plate is configured to transmit deformation from the brush rod to the strain gauge; and the strain gauge deforms and outputs a corresponding electric signal. The toothbrush is simple and compact in structure and beneficial to improving the accuracy of pressure sensing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of personal hygiene products, and particularly relates to a toothbrush. BACKGROUND

[0002] With the social progress, more and more people begin to pay attention to physical health, and at the same time, due to the fast pace of city life and bad living habits, oral diseases have become one of the highest incidence of diseases in people's daily life.

[0003] When the user uses the toothbrush, since the brush head needs to be close to the tooth surface, when the user presses the toothbrush tightly, the excessive pressure and the high-frequency friction of the bristles may cause damage to the teeth, and easily cause gum bleeding and tooth wedge wear and other harmful health problems. Therefore, a toothbrush with pressure reminding and protection function is needed. SUMMARY

[0004] The utility model provides a kind of toothbrush, the toothbrush includes pressure sensing component and sequentially connected brush head, brush rod and handle;The pressure sensing component includes strain gauge and force transmission plate piece arranged in the brush rod interior;Wherein, the force transmission plate piece is configured as the deformation from the brush rod is transmitted to the strain gauge;The strain gauge generates deformation and outputs corresponding electrical signal.

[0005] The setting of force transmission plate piece makes there be relatively stable deformation transmission medium between brush rod and strain gauge, and the structure is simple and compact, and is conducive to improving the accuracy of pressure sensing.

[0006] According to an aspect of the utility model, the brush head includes tooth cleaning element;The strain gauge and the force transmission plate piece are stacked along the extension direction of the tooth cleaning element. Since the stress direction of brush head when brushing teeth is basically the extension direction of tooth cleaning element, the strain gauge and the force transmission plate piece are stacked along the extension direction, so that the transmission path of deformation is shortest.

[0007] According to an aspect of the utility model, the brush rod is provided with first accommodating space for accommodating the strain gauge and the force transmission plate piece;The toothbrush is provided with cover plate covering the first accommodating space. Thus, when assembling, the pressure sensing component is placed first, and then the above-mentioned cover plate is covered, which is simple and efficient.

[0008] According to an aspect of the utility model, the side of the cover plate towards the first accommodating space is provided with pressing block;The pressing block is used for pressing the strain gauge and the force transmission plate piece in the first accommodating space. No space is left in the stress direction, which is conducive to better transmission of deformation to the strain gauge.

[0009] According to one aspect of the present application, the toothbrush comprises a front surface provided with the tooth cleaning elements and a rear surface opposite to the front surface; the opening of the first accommodating space faces the rear surface; the strain gauge is closer to the rear surface relative to the force transmission plate. On one hand, the overall aesthetics of the toothbrush is improved, and on the other hand, the cover plate is arranged on the rear surface structure and is more stable and not easy to fall off since the stress direction of the toothbrush during tooth brushing is from the front surface to the rear surface.

[0010] According to one aspect of the present application, the force transmission plate is made of rigid material. Thus, the deformation of the brush rod cannot be absorbed or reduced by the force transmission plate.

[0011] According to still another aspect of the present application, the force transmission plate and the strain gauge are bonded by a colloid. Thus, the connection between the two is more stable.

[0012] According to one aspect of the present application, the toothbrush further comprises a microprocessor and an alarm; the microprocessor is electrically connected with the strain gauge to receive the electrical signal from the strain gauge and notify the alarm to alarm when the electrical signal reaches a preset value. Thus, when the pressure is too large, the user can be notified by the alarm.

[0013] According to one aspect of the present application, the handle is provided with a second accommodating space for accommodating the microprocessor; the microprocessor and the strain gauge are electrically connected by wires. Thus, the microprocessor can be accommodated in the toothbrush and realize stable electrical connection with the strain gauge.

[0014] According to one aspect of the present application, the toothbrush further comprises a power supply electrically connected with the microprocessor and the alarm; the handle is provided with a third accommodating space for accommodating the power supply. Thus, the power supply can be accommodated in the toothbrush and provide power support.

[0015] According to one aspect of the present application, the power supply is a dry battery. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will also be explained in more detail with the help of the following drawings. These should be understood as merely exemplary and are not intended to limit the present application to the examples of the illustrated embodiments.

[0017] Figure 1 An exploded view of the toothbrush according to the preferred embodiment of the present application is shown;

[0018] Figure 2 A perspective view of the toothbrush according to the preferred embodiment of the present application is shown; Figure 1 A perspective view of the pressure sensing assembly according to the preferred embodiment of the present application is shown.

[0019] LIST OF REFERENCE NUMBERS

[0020] 1 Pressure sensor component

[0021] 11 Strain gauge

[0022] 12 force transmission plate

[0023] 2 brush heads

[0024] 21 tooth cleaning elements

[0025] 3 brush rods

[0026] 31 First storage space

[0027] 4 handles

[0028] 41 Second storage space

[0029] 42 Third storage space

[0030] 5 Cover

[0031] 51 Compression block

[0032] 6 Microprocessor

[0033] 7 wires DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with specific embodiments and accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0035] Figure 1 Shows an exploded view of a toothbrush according to a preferred embodiment of the present invention, and Figure 2 Shown Figure 1 A perspective view of the pressure sensing component in the figure.

[0036] like Figure 1 The toothbrush shown includes a pressure-sensing component 1, a brush head 2, a brush rod 3, and a handle 4 connected in sequence. The brush head 2 is inserted into the mouth to clean the teeth, and the handle 4 is convenient for the user to hold. The brush rod 3 is located between the brush head 2 and the handle 4. The three components can be either integrally formed or detachably connected. Similarly, the toothbrush in this application can be either a conventional toothbrush or an electric toothbrush, without limitation.

[0037] The pressure sensing assembly 1 comprises a strain gauge 11 and a force transmission plate 12 arranged inside the brush rod 3. During tooth brushing, the brush head 2 is subjected to pressure from the teeth, and the handle 4 is subjected to the gripping force of the user, so the brush rod 3 located between the two is often the most obvious position of deformation. Arranging the strain gauge 11 and the force transmission plate 12 in the brush rod 3 is conducive to improving the sensitivity of pressure sensing. The force transmission plate 12 is configured to transmit the deformation from the brush rod 3 to the strain gauge 11, and the strain gauge 11 generates deformation and outputs a corresponding electrical signal. The arrangement of the force transmission plate 12 makes the brush rod 3 and the strain gauge 11 have a relatively stable medium for transmitting deformation, which is compact in structure and conducive to improving the accuracy of pressure sensing. It should be understood that the position design of the strain gauge 11 and the force transmission plate 12 should make the force transmission plate 12 receive the deformation of the brush rod 3 preferentially to the strain gauge 11, which will be described in subsequent embodiments.

[0038] According to an exemplary embodiment of the present application, as shown in Figure 1 The brush head 2 comprises tooth cleaning elements 21, which are generally composed of a plurality of groups of bristles and are planted substantially perpendicularly on the surface of the brush head 2, and are in contact with the teeth to clean the tooth surface. Figure 2 As shown in Figure 2 The strain gauge 11 and the force transmission plate 12 are stacked along the extension direction of the tooth cleaning elements 21. Since the force direction of the brush head 2 during tooth brushing is generally the extension direction of the tooth cleaning elements 21, the deformation will be transmitted to the strain gauge 11 along the thickness direction of the force transmission plate 12, and the transmission path is the shortest.

[0039] According to an exemplary embodiment of the present application, as shown in Figure 1 The brush rod 3 is provided with a first accommodating space 31 for accommodating the strain gauge 11 and the force transmission plate 12, and the toothbrush is provided with a cover plate 5 for covering the accommodating space. Thus, during assembly, the strain gauge 11 and the force transmission plate 12 are first placed in the first accommodating space 31, and then covered with the cover plate 5, which is simple and efficient.

[0040] In other alternative embodiments, the brush rod 3 and the handle 4 can be detachably connected, and the bottom of the brush rod 3 is provided with a channel for inserting the strain gauge 11 and the force transmission plate 12, and the channel can be closed by connecting with the handle 4, which will not be described here.

[0041] According to an exemplary embodiment of the present application, as shown in Figure 1 The side of the cover plate 5 facing the first accommodating space 31 is provided with a pressing block 51; the pressing block 51 is used to press the strain gauge 11 and the force transmission plate 12 in the first accommodating space 31. The thickness of the pressing block 51 should be designed to make the pressing block 51, the strain gauge 11 and the force transmission plate 12 just fill the first accommodating space 31 in the force direction, which is compact in structure and does not leave space for displacement, avoiding the possibility of displacement of the strain gauge 11, and conducive to better transmission of deformation to the strain gauge 51.

[0042] In other alternative embodiments, the pressing block 51 can also be located at other positions such as the inner wall of the brush rod 3, which can press the strain gauge 11 and the force transmission plate 12 to the first accommodating space 31, and details are not repeated here.

[0043] According to an exemplary embodiment of the present utility model, as shown in Figure 1 The toothbrush includes a front surface planted with tooth cleaning elements 21 and a rear surface opposite to the front surface; the opening of the first accommodating space 31 faces the rear surface, so that on the one hand, the cover plate 5 is covered on the rear surface of the toothbrush, improving the overall aesthetics of the toothbrush, and on the other hand, since the stress direction of the toothbrush during brushing is from the front surface to the rear surface, the cover plate 5 is more stable in structure on the rear surface and is not easy to fall off. Preferably, the strain gauge 11 is closer to the rear surface relative to the force transmission plate 12, that is, the strain gauge 11 is arranged between the cover plate 5 and the force transmission plate 12.

[0044] According to an exemplary embodiment of the present utility model, the force transmission plate 12 is made of a rigid material. Thus, the deformation of the brush rod 3 will not be absorbed or reduced by the force transmission plate 12, ensuring the accuracy of the deformation amount transmitted to the strain gauge 11.

[0045] According to an exemplary embodiment of the present utility model, the force transmission plate 12 and the strain gauge 11 are bonded by a colloid. The colloid can be double-sided tape, VHB acrylic foam tape, AB glue, epoxy resin or other similar materials. The material selection and thickness of these glue materials are determined according to the material of the force transmission plate 12 and the strain gauge 11. Thus, the connection between the two is more stable.

[0046] According to an exemplary embodiment of the present utility model, the toothbrush further includes a microprocessor 6 and an alarm (not shown); the microprocessor 6 is electrically connected to the strain gauge 11 to receive an electrical signal from the strain gauge 11 and notify the alarm when the electrical signal exceeds a preset value. Optionally, the electrical signal can be a resistance value that changes with the deformation amount, the carrier of the microprocessor 6 is a circuit board, the alarm has a reminding mode including but not limited to light and sound, and the microprocessor 6 will notify the alarm to issue a reminder when the resistance value reaches the preset value, so that the user can perceive.

[0047] According to an exemplary embodiment of the present utility model, as shown in Figure 1 The handle 4 is provided with a second accommodating space 41 for accommodating the microprocessor 6; as shown in Figure 2 The microprocessor 6 and the strain gauge 11 are electrically connected through a wire 7. Thus, the microprocessor 6 can be accommodated in the toothbrush and stably electrically connected to the strain gauge 11.

[0048] According to one exemplary embodiment of the present application, the toothbrush further comprises a power supply (not shown) electrically connected to the microprocessor 6 and the alarm; the handle 4 is provided with a third accommodating space 42 for accommodating the power supply. Thus, the power supply is accommodated in the toothbrush and provides power support.

[0049] According to one exemplary embodiment of the present application, the power supply is a dry battery.

[0050] Although the present application is disclosed with preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not deviate from the technical solutions of the present application, falls within the protection scope defined by the claims of the present application.

Claims

1.A toothbrush, characterized in that: the toothbrush comprises a pressure sensing assembly and a brush head, a brush stem and a handle connected in sequence; the pressure sensing assembly comprises a strain gauge and a force transmission plate arranged inside the brush stem; wherein, the force transmission plate is configured to transmit deformation from the brush stem to the strain gauge; the strain gauge generates deformation and outputs corresponding electrical signals. 2.The toothbrush of claim 1, characterized in that: the brush head comprises tooth cleaning elements; the strain gauge and the force transmission plate are stacked along the extension direction of the tooth cleaning elements. 3.The toothbrush of claim 2, characterized in that: the brush stem is provided with a first accommodating space for accommodating the strain gauge and the force transmission plate; the toothbrush is provided with a cover plate covering the first accommodating space. 4.The toothbrush of claim 3, characterized in that: a side of the cover plate facing the first accommodating space is provided with a pressing block; the pressing block is used to press the strain gauge and the force transmission plate in the first accommodating space. 5.The toothbrush of claim 3, characterized in that: the toothbrush comprises a front surface provided with the tooth cleaning elements and a back surface opposite to the front surface; an opening of the first accommodating space faces the back surface; the strain gauge is closer to the back surface than the force transmission plate. 6.The toothbrush of any one of claims 1 to 5, characterized in that: the force transmission plate is made of rigid material; and / or, the force transmission plate and the strain gauge are bonded by colloid. 7.The toothbrush of any one of claims 1 to 5, characterized in that, the toothbrush further comprises a microprocessor and an alarm; the microprocessor is electrically connected to the strain gauge to receive electrical signals from the strain gauge and notify the alarm when the electrical signals reach a preset value. 8.The toothbrush of claim 7, characterized in that: the handle is provided with a second accommodating space for accommodating the microprocessor; the microprocessor and the strain gauge are electrically connected by wires. 9.The toothbrush of claim 7, characterized in that: the toothbrush further comprises a power supply electrically connected to the microprocessor and the alarm; the handle is provided with a third accommodating space for accommodating the power supply. 10.The toothbrush of claim 9, characterized in that: the power supply is a dry battery.

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