Electric toothbrush

Abstract

The utility model belongs to the technical field of articles for daily use, and discloses an electric toothbrush which comprises a brush handle and a brush head, and the brush handle comprises a shell, a brush head and a handle, the main bracket is mounted in the accommodating cavity; the motor is provided with a mounting part and a driving shaft, the mounting part is movably or flexibly connected with the main support, and the driving shaft penetrates out of the shell to be connected with the brush head; the PCBA is provided with a rigid part and a non-rigid part, the rigid part is fixed to the main support, the non-rigid part is connected with the motor, and a deformation detection piece is arranged on the non-rigid part; when the driving shaft is subjected to transverse acting force F, the motor swings and drives the non-rigid part to deform, and the deformation detection piece is used for detecting the deformation quantity of the non-rigid part. The electric toothbrush provided by the utility model has a pressure sensing function, and can be automatically started and measure the pressure of the brush head pressing against the teeth of a user.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of daily necessities, especially to an electric toothbrush. BACKGROUND

[0002] The electric toothbrush is a kind of through the quick rotation or vibration of motor core, make brush head produce high frequency vibration, toothpaste is decomposed into fine foam, in-depth cleaning tooth gap, simultaneously, the tremor of bristle can promote the blood circulation of oral cavity, has the massage effect to gingival tissue.Compared with ordinary toothbrush, electric toothbrush has the advantages such as strong cleaning power, convenient to use, high efficiency of tooth brushing.

[0003] At present, intelligentization is the development trend of household appliances, for electric toothbrush, how to automatically start or detect the size of brushing pressure is an important research direction of intelligentization.

[0004] Therefore, an electric toothbrush is needed to solve the above technical problems. INVENTION CONTENTS

[0005] The utility model discloses a kind of electric toothbrush, with pressure sensing function, can automatically start electric toothbrush and measure the size of the pressure of brush head pressing against user's teeth.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Provide a kind of electric toothbrush, including brush handle and brush head, the brush handle includes:

[0008] Shell, form accommodating cavity in it;

[0009] Main support, installation in the accommodating cavity;

[0010] Motor, with installation part and drive shaft, the installation part is movably connected or flexibly connected with the main support, the drive shaft passes out the shell to connect the brush head;

[0011] PCBA, with rigid part and non-rigid part, the rigid part is fixed to the main support, the non-rigid part is connected with the motor, and the non-rigid part is equipped with deformation detection piece;

[0012] When the drive shaft is subjected to lateral force F, the motor swings and drives the non-rigid part to deform, and the deformation detection piece is used to detect the deformation amount of the non-rigid part.

[0013] As a preferred scheme, the brush handle further includes:

[0014] Soft rubber piece, the installation part is flexibly connected with the main support through the soft rubber piece, when the drive shaft is subjected to lateral force F, the soft rubber piece is extruded and stretched to deform.

[0015] As a preferred solution, the brush handle further comprises:

[0016] A rotating shaft is provided with a connecting through hole, the rotating shaft is arranged in the connecting through hole, and two ends of the rotating shaft are connected to the main support.

[0017] As a preferred solution, the main support is provided with a mounting groove at one end close to the motor, the mounting portion penetrates and is mounted in the mounting groove, and the soft rubber member is filled in a gap between an outer periphery of the mounting portion and the mounting groove.

[0018] As a preferred solution, the mounting portion is arranged on the motor and away from the tail end of the driving shaft.

[0019] As a preferred solution, the non-rigid portion is located on a side of the motor, and the non-rigid portion is connected to a point on the motor away from the mounting portion.

[0020] As a preferred solution, the brush handle further comprises:

[0021] A head support is arranged on the motor, and one end of the non-rigid portion away from the rigid portion is connected to the head support.

[0022] As a preferred solution, the non-rigid portion is buckled or overlapped with the head support.

[0023] As a preferred solution, one side of the driving shaft corresponding to a side of the brush head provided with bristles is a force receiving surface, the head support is provided with a force transmitting surface, and the force transmitting surface is in abutment or connection with the non-rigid portion.

[0024] The force transmitting surface is located on a side of the motor close to the force receiving surface, and the force transmitting surface and the force receiving surface are oppositely arranged.

[0025] The force transmitting surface is located on a side of the motor away from the force receiving surface, and the force transmitting surface and the force receiving surface are oppositely arranged.

[0026] As a preferred solution, the brush handle further comprises:

[0027] A battery is arranged on the main support, and the battery is electrically connected with the motor and the PCBA to supply power to the motor and the PCBA.

[0028] The utility model discloses the beneficial effects of:

[0029] The electric toothbrush provided by the utility model has a containing cavity formed in the shell of the brush handle, the main support, the motor and the PCBA are all arranged in the containing cavity, the driving shaft of the motor penetrates through the shell to connect the brush head, the motor drives the brush head to vibrate at high speed to realize the function of automatically cleaning teeth. The non-rigid part of the PCBA is connected with the motor, the motor is installed on the main support through the mounting part, the mounting part is movably connected or flexibly connected with the main support, when the user presses the brush head against the teeth, the driving shaft is subjected to the lateral force F, the motor swings relative to the main support around the mounting part, and simultaneously drives the non-rigid part to deform, the deformation detection piece on the non-rigid part detects the deformation amount of the non-rigid part, when the deformation amount detected by the deformation detection piece exceeds the preset value, the pressure sensing function is triggered and the electric toothbrush is turned on, and according to the deformation amount detected by the deformation detection piece, the lateral force F borne by the driving shaft is converted, that is, the pressure of the brush head pressed against the teeth of the user is indirectly measured. In conclusion, the electric toothbrush provided by the utility model has the pressure sensing function, can automatically turn on the electric toothbrush and measure the pressure of the brush head pressed against the teeth of the user. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a partial structure schematic view of the electric toothbrush provided by the utility model embodiment one;

[0031] Figure 2 is Figure 1 is an enlarged schematic view of the region A in

[0032] Figure 3 is a partial structure schematic view of the electric toothbrush provided by the utility model embodiment two.

[0033] In the drawings:

[0034] 1, shell; 11, containing cavity; 2, main support; 21, mounting groove; 3, motor; 31, mounting part; 32, driving shaft; 321, stress surface; 4, PCBA; 41, rigid part; 42, non-rigid part; 43, deformation detection piece; 5, soft glue piece; 6, rotating shaft piece; 7, head support; 71, force transmission surface; 8, battery. DETAILED DESCRIPTION

[0035] The utility model will be further explained in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all structures.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] Example 1:

[0040] like Figure 1 As shown, this embodiment provides an electric toothbrush, including a handle and a brush head. The handle includes a housing 1, a main support 2, a motor 3, a PCBA 4, and a battery 8. A receiving cavity 11 is formed inside the housing 1. The main support 2, the motor 3, and the PCBA 4 are all installed in the receiving cavity 11. The motor 3 has a drive shaft 32 that extends out of the housing 1. The drive shaft 32 is used to connect the brush head. The motor 3 is a high-speed vibration motor 3. The PCBA 4 is electrically connected to the motor 3 to control the operation of the motor 3. The battery 8 is installed in the main support 2 and is electrically connected to the motor 3 and the PCBA 4 to supply power to the motor 3 and the PCBA 4.

[0041] Furthermore, such as Figure 1As shown, the motor 3 also has a mounting portion 31 which is flexibly connected with the main support 2, the PCBA 4 has a rigid portion 41 and a non-rigid portion 42, the rigid portion 41 is fixed to the main support 2 by buckling or screwing, the non-rigid portion 42 is connected with the motor 3, and the non-rigid portion 42 is provided with a deformation detection member 43. When the driving shaft 32 is subjected to the lateral force F, the motor 3 swings and drives the non-rigid portion 42 to deform, and the deformation detection member 43 is used to detect the deformation amount of the non-rigid portion 42.

[0042] Specifically, the electric toothbrush provided in the embodiment has a receiving cavity 11 formed in the shell 1 of the handle, the main support 2, the motor 3 and the PCBA 4 are all arranged in the receiving cavity 11, the driving shaft 32 of the motor 3 penetrates through the shell 1 to connect the brush head, and the motor 3 drives the brush head to vibrate at high speed to realize the function of automatically cleaning teeth. The non-rigid portion 42 of the PCBA 4 is connected with the motor 3, the motor 3 is mounted on the main support 2 through the mounting portion 31, the mounting portion 31 is movably or flexibly connected with the main support 2, when the user presses the brush head against the teeth, the driving shaft 32 is subjected to the lateral force F, the motor 3 swings relative to the main support 2 around the mounting portion 31, and simultaneously drives the non-rigid portion 42 to deform, the deformation detection member 43 on the non-rigid portion 42 detects the deformation amount of the non-rigid portion 42, when the deformation amount detected by the deformation detection member 43 exceeds a preset value, the pressure sensing function is triggered and the electric toothbrush is turned on, and according to the deformation amount detected by the deformation detection member 43, the lateral force F acting on the driving shaft 32 is converted, that is, the pressure of the brush head pressing against the teeth of the user is indirectly measured. In summary, the electric toothbrush provided in the embodiment has the pressure sensing function, can automatically turn on the electric toothbrush and measure the pressure of the brush head pressing against the teeth of the user.

[0043] As shown in the figure, Figure 1 As shown, the handle further comprises a soft rubber member 5, the mounting portion 31 is flexibly connected with the main support 2 through the soft rubber member 5, and when the driving shaft 32 is subjected to the lateral force F, the soft rubber member 5 is subjected to extrusion and tensile deformation. Specifically, the soft rubber member 5 is filled between the peripheral portion and the end portion of the mounting portion 31 and the main support 2, which not only has the function of connection and fixation, but also can elastically deform to allow the motor 3 to swing, when the motor 3 is pressed to swing, the soft rubber structure in the direction of the swing portion is extruded, and the soft rubber structure away from the swing portion is stretched.

[0044] As shown in the figure, Figure 1 As shown, the main support 2 is provided with a mounting groove 21 at one end close to the motor 3, the mounting portion 31 penetrates into and is mounted in the mounting groove 21, and the soft rubber member 5 is filled in the gap between the outer periphery of the mounting portion 31 and the mounting groove 21, the area of the soft rubber member 5 far away from the driving shaft 32 deforms relatively less, and the area forms a fulcrum and an axis of the swing action of the motor 3, and the motor 3 swings around the area.

[0045] In the embodiment, as shown in the figure, Figure 1As shown, the mounting portion 31 is arranged on the motor 3 away from the tail end of the driving shaft 32. Specifically, the driving shaft 32 and the mounting portion 31 are respectively located at the front and rear ends of the motor 3, the non-rigid portion 42 of the PCBA 4 is located at the side of the motor 3, and the connection point of the non-rigid portion 42 and the motor 3 is located at the end of the body of the motor 3 away from the mounting portion 31 and close to the driving shaft 32. When the driving shaft 32 receives the lateral force F, the axis of the swinging movement of the motor 3 is located at the mounting portion 31, and the distance between the driving shaft 32 and the mounting portion 31 is large enough, so that the swinging range of the motor 3 is larger, the deformation amount of the non-rigid portion 42 of the PCBA 4 is also larger, and the deformation detection member 43 can more easily detect the deformation amount of the non-rigid portion 42 and more accurately reflect the size of the lateral force F received by the driving shaft 32.

[0046] As shown in Figure 1 and Figure 2 , the brush handle further comprises a head support 7, the head support 7 is mounted on the motor 3, and the end of the non-rigid portion 42 away from the rigid portion 41 is connected to the head support 7. When the motor 3 swings under the action of the lateral force F, the head support 7 is driven to move, and the head support 7 pulls the non-rigid portion 42 of the PCBA 4 to deform.

[0047] As shown in Figure 1 and Figure 2 , the non-rigid portion 42 is buckled or overlapped with the head support 7. Specifically, a groove structure can be provided on the head support 7 to insert the end of the non-rigid portion 42, which not only plays a limiting installation role, but also can transmit the driving force to drive the non-rigid portion 42 to deform. In some embodiments, the non-rigid portion 42 can also be directly overlapped on the head support 7, and the head support 7 pushes the non-rigid portion 42 of the PCBA 4 to deform when the head support 7 moves.

[0048] As shown in Figure 1 and Figure 2 , the side of the driving shaft 32 corresponding to the side of the brush head provided with the bristles is the force receiving surface 321, which receives the lateral force F transmitted when the side of the brush head provided with the bristles is pressed. The head support 7 is provided with a force transmission surface 71, the force transmission surface 71 abuts against or is connected with the non-rigid portion 42, and the head support 7 transmits the driving force to the PCBA 4 through the force transmission surface 71, which can drive the non-rigid portion 42 to deform. In this embodiment, the force transmission surface 71 is located on the side of the motor 3 close to the force receiving surface 321, and the force transmission surface 71 and the force receiving surface 321 are oppositely arranged, the head support 7 is buckled with the non-rigid portion 42, the head support 7 is provided with a groove structure, and the force receiving surface 321 is arranged on the inner wall of the groove structure.

[0049] In some embodiments, the force transmission surface 71 can also be located on the side of the motor 3 away from the force receiving surface 321, and the force transmission surface 71 is arranged in the same direction as the force receiving surface 321, in which case the non-rigid part 42 can also be directly lapped on the head support 7, and the force receiving surface 321 is the plane on the head support 7 where the non-rigid part 42 is lapped, and the structure is simpler.

[0050] For example, the head support 7 can be made of soft rubber material, so as to transmit a flexible force to the PCBA 4 and avoid damaging the PCBA 4.

[0051] For example, the deformation detection member 43 can be selected from strain gauge sensors, piezoelectric sensors, and resistance displacement sensors.

[0052] Embodiment Two:

[0053] As shown in Figure 3 the embodiment one, the embodiment provides another electric toothbrush, which is different from the electric toothbrush provided in the embodiment one in that:

[0054] The mounting part 31 is movably connected with the main support 2, and in the embodiment, the mounting part 31 is rotatably connected with the main support 2. The brush handle further comprises a rotating shaft member 6, the mounting part 31 is provided with a connecting through hole, the rotating shaft member 6 is arranged in the connecting through hole, and both ends of the rotating shaft member 6 are connected with the main support 2. When the driving shaft 32 is subjected to the transverse force F, the motor 3 can swing around the rotating shaft member 6.

[0055] Specifically, when the motor 3 swings under the transverse force F, the motor 3 rotates around the driving shaft 32, the motor 3 is more easily swung, the deformation detection member 43 can more sensitively detect the deformation amount of the PCBA 4, that is, more sensitively measure the pressure of the brush head pressing against the teeth of the user. The soft rubber member 5 plays a role of connecting and fixing the mounting part 31 in the embodiment, and when the motor 3 rotates around the driving shaft 32, the soft rubber member 5 can play a damping role and can protect the mounting part 31 from being damaged by collision with the mounting groove 21.

[0056] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An electric toothbrush comprising a handle and a head, characterized in that, The brush handle comprises: a shell (1) in which a receiving cavity (11) is formed; a main support (2) installed in the receiving cavity (11); a motor (3) having a mounting portion (31) and a driving shaft (32), the mounting portion (31) being movably or flexibly connected with the main support (2), and the driving shaft (32) penetrating through the shell (1) to connect the brush head; a PCBA (4) having a rigid portion (41) and a non-rigid portion (42), the rigid portion (41) being fixed to the main support (2), and the non-rigid portion (42) being connected with the motor (3), and the non-rigid portion (42) being provided with a deformation detection member (43); when the driving shaft (32) is subjected to a transverse force F, the motor (3) swings and drives the non-rigid portion (42) to deform, and the deformation detection member (43) is used to detect the deformation amount of the non-rigid portion (42).

2. The electric toothbrush according to claim 1, characterized in that The brush handle further comprises: a soft rubber member (5), the mounting portion (31) and the main support (2) being flexibly connected through the soft rubber member (5), and when the driving shaft (32) is subjected to a transverse force F, the soft rubber member (5) is subjected to extrusion and tensile deformation.

3. The electric toothbrush according to claim 2, wherein The brush handle further comprises: a rotating shaft member (6), the mounting portion (31) being provided with a connecting through hole, and the rotating shaft member (6) being arranged in the connecting through hole, and both ends of the rotating shaft member (6) being connected with the main support (2), and when the driving shaft (32) is subjected to a transverse force F, the motor (3) can swing around the rotating shaft member (6).

4. The electric toothbrush according to claim 2, wherein The main support (2) is provided with a mounting groove (21) at one end close to the motor (3), the mounting portion (31) penetrates into and is installed in the mounting groove (21), and the soft rubber member (5) is filled in the gap between the outer periphery of the mounting portion (31) and the mounting groove (21).

5. The electric toothbrush according to claim 1, wherein The mounting portion (31) is arranged on the tail end of the motor (3) away from the driving shaft (32).

6. The electric toothbrush according to claim 1, wherein The non-rigid portion (42) is located beside the motor (3), and the non-rigid portion (42) is connected to a point on the motor (3) away from the mounting portion (31).

7. The electric toothbrush according to claim 6, wherein The brush handle further comprises: a head support (7) installed on the motor (3), and one end of the non-rigid portion (42) away from the rigid portion (41) being connected to the head support (7).

8. The electric toothbrush according to claim 7, characterized in that The non-rigid portion (42) is buckled or overlapped with the head support (7).

9. The electric toothbrush according to claim 8, wherein One side of the driving shaft (32) corresponding to the side on which bristles are arranged on the brush head is a force receiving surface (321), the head support (7) is provided with a force transmitting surface (71), the force transmitting surface (71) abuts against or is connected with the non-rigid portion (42); the force transmitting surface (71) is located on the side of the motor (3) close to the force receiving surface (321), and the force transmitting surface (71) and the force receiving surface (321) are oppositely arranged; or the force transmitting surface (71) is located on the side of the motor (3) away from the force receiving surface (321), and the force transmitting surface (71) and the force receiving surface (321) are arranged in the same direction.

10. The electric toothbrush according to any one of claims 1-9, characterized in that The brush handle further comprises: A battery (8) is mounted to the main bracket (2), and the battery (8) is electrically connected with the motor (3) and the PCBA (4) to supply power to the motor (3) and the PCBA.

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