WO2021233425A1

WO2021233425A1 - Pressure-sensing electric toothbrush

Info

Publication number: WO2021233425A1
Application number: PCT/CN2021/095185
Authority: WO
Inventors: 廖嘉业; 姚志坚; 陈思远; 李双双; 黄李祥
Original assignee: 美家智能科技(广州)有限公司
Priority date: 2020-05-22
Filing date: 2021-05-21
Publication date: 2021-11-25
Also published as: CN111494049A

Abstract

Disclosed is a pressure-sensing electric toothbrush, comprising a brush handle housing (11), a circuit board (12), a connecting bracket (13), a driver member (14) and a toothbrush head (15). The circuit board (12) is in the brush handle housing (11) and is arranged close to a first side portion (111) of the brush handle housing (11). The connecting bracket (13) and the driver member (14) are in the brush handle housing (11) and are arranged close to the top end of the brush handle housing (11). The driver member (14) is in driving connection with the toothbrush head (15). A pressure-sensing element (16) on the inner side of the circuit board (12) is connected to a controller, and a pressing gap is reserved between the pressure-sensing element (16) and the driver element (14). A protrusion (113) is arranged on the inner side of a second side portion (112) of the brush handle housing (11), and the protrusion (113) passes through a slot in the connecting bracket (13). The outer side of the driver member (14) is provided with a revolution matching part (1423) on a side close to the second side portion (112) of the brush handle housing (11), and the revolution matching part (1423) and the protrusion (113) match in terms of revolution. When the pressure-sensing element (16) is triggered, the controller controls a predetermined element to perform a preset protection operation. When there is a large amount of stress on the toothbrush head (15), the pressure-sensing electric toothbrush can reduce the probability of the gum and the oral cavity of a user being damaged.

Description

Pressure induction electric toothbrush

Cross-references to related applications

This application claims the priority of the Chinese patent application with the application number 202010443861.2 and the title "a pressure-sensitive electric toothbrush" filed with the Chinese Patent Office on May 22, 2020. The entire content of the above application is incorporated into this application by reference. .

Technical field

This application relates to the technical field of electric toothbrushes, in particular to a pressure-sensitive electric toothbrush.

Background technique

The electric toothbrush is a tooth cleaning appliance that uses the rapid rotation or vibration of the motor core to cause the brush head to produce high-frequency vibration, which instantly decomposes toothpaste into fine foam, and cleans the teeth deeply. Because of its convenient use and good cleaning effect, people are right The use of electric toothbrushes is becoming more and more common.

At present, when an electric toothbrush is in use, people mainly adjust the force of the toothbrush head. When most electric toothbrushes are under greater force on the toothbrush head, the bristles of the toothbrush head will shift toward the gums of the user’s mouth. The greater force is likely to cause damage to the user's gums and oral cavity.

Summary of the invention

The purpose of the embodiments of the present application includes at least providing a pressure-sensitive electric toothbrush, which reduces the chances of the user's gums and oral cavity being damaged when the toothbrush head is stressed.

The embodiment of the application provides a pressure-sensitive electric toothbrush, which may include a handle housing, a circuit board, a connecting bracket, a driving mechanism, and a toothbrush head,

The brush handle housing may have opposite first and second sides;

The circuit board may be arranged in the brush handle housing close to the first side of the brush handle housing along the length direction of the brush handle housing;

The connecting bracket may be arranged in the handle housing close to the top end of the handle housing;

The driving mechanism may be arranged in the handle housing close to the top end of the handle housing, and the driving mechanism may be drivingly connected with the toothbrush head;

A pressure sensing element may be provided on the inner side of the circuit board or on a side of the driving mechanism close to the circuit board, and the pressure sensing element may be connected to a controller on the circuit board;

When the pressure sensing element is arranged on the inner side of the circuit board, the pressure sensing element may leave a pressing gap with the driving mechanism; when the pressure sensing element is arranged on the driving mechanism close to When on one side of the circuit board, the pressure sensing element may leave a pressing gap with the circuit board;

A protrusion may be provided on the inner side of the second side portion of the brush handle housing, and the end surface of the protrusion may be arc-shaped;

A through groove may be provided on the connecting bracket, and the protrusion on the second side of the brush handle housing may pass through the through groove;

The outer side of the driving mechanism may be provided with a revolving matching portion on a side close to the second side portion of the brush handle housing, and the revolving matching portion and the protruding portion are revolvingly matched;

When the pressure sensing element is triggered, the controller controls the predetermined element to perform a preset protection operation.

In the foregoing implementation process, in the pressure-sensitive electric toothbrush of the embodiment of the present application, the circuit board is arranged in the handle housing close to the first side of the handle housing, and the connecting bracket and the driving mechanism are close to the handle in the handle housing. The top part of the housing is provided, and the driving mechanism is drivingly connected to the toothbrush head; the pressure sensing element arranged on the inner side of the circuit board or on the side of the driving mechanism close to the circuit board is connected to the controller, and the pressure sensing element is connected to the driving mechanism There is a pressing gap left on the component or circuit board. The inner side of the second side of the brush handle housing is provided with a convex part with an arc-shaped end surface. The convex part passes through the through groove on the connecting bracket, A revolving mating part is provided on one side of the second side part of the brush handle housing, and the revolving mating part is revolvingly matched with the protruding part. In the larger case, the toothbrush head will be offset relative to the handle due to greater compression. When the toothbrush head is offset, the toothbrush head will drive the driving mechanism through the rotation of the revolving mating part and the protruding part. Revolving deviation, the driving mechanism generates revolving deviation and then triggers the pressure sensing element. When the pressure sensing element is triggered, the controller controls the predetermined element to perform the preset protection operation. The preset protection operation performed by the predetermined element can be Reduce the chances of the user's gums and oral cavity being damaged.

Optionally, the driving mechanism includes a driving motor and a motor housing,

The driving motor may be arranged on the motor housing;

The driving motor may be drivingly connected with the toothbrush head;

When the pressure sensing element is arranged on the inner side of the circuit board, the pressure sensing element may leave a pressing gap with the motor housing of the driving mechanism;

When the pressure sensing element is disposed on the side of the driving mechanism close to the circuit board, the pressure sensing element may be disposed on the motor housing of the driving mechanism close to the circuit On one side of the board;

The revolving matching portion may be provided on the motor housing of the driving mechanism.

In the above realization process, when the toothbrush head shifts, the toothbrush head drives the drive motor to shift, and the drive motor shifts, which drives the motor housing to revolve and shift through the revolving cooperation between the revolving fitting part and the protruding part. , So that the pressure sensing element can be triggered, the structure of the driving mechanism and the setting of the revolving matching part are more reasonable and scientific, avoiding the direct setting of the revolving matching part on the driving motor, and better guaranteeing the revolving cooperation on the driving part The part is matched with the rotation of the protruding part on the shell of the brush handle.

Optionally, the motor housing may include a motor housing main body and a pressing plate,

The pressure sensing element may be disposed on the inner side of the circuit board close to the bottom end of the motor housing main body, and the pressing plate may be disposed on the bottom end of the motor housing main body;

When the pressure sensing element is arranged on the inner side of the circuit board, the pressing plate may be close to the pressure sensing element and leave the pressing gap with the pressure sensing element;

When the pressure sensing element is disposed on the side of the driving mechanism close to the circuit board, the pressure sensing element may be disposed on the pressing board of the motor housing close to the circuit board On one side

The revolving matching portion may be provided on the motor housing main body of the driving mechanism.

In the above implementation process, the pressing plate can be arranged at the bottom end of the motor housing body. When the drive motor drives the motor housing body to revolve and deviate, the pressing plate can also follow the motor housing body to revolve and deviate, thereby triggering pressure. The arrangement of the sensing element and the pressing plate better guarantees the triggering of the pressure sensing element, and further guarantees the pressure sensing of the pressure-sensitive electric toothbrush in the embodiment of the present application.

Optionally, the driving motor may be an ultrasonic vibration motor.

In the foregoing implementation process, the ultrasonic vibration motor can make the pressure-sensitive electric toothbrush of the embodiment of the present application have a better cleaning effect.

Optionally, the revolving matching portion may be a recessed portion, and the recessed portion may be arc-shaped.

In the above-mentioned realization process, the arc-shaped concave portion can better revolve and cooperate with the arc-shaped convex portion on the end surface.

Optionally, the protruding part may be a protruding pillar, the end surface of the protruding pillar may be arc-shaped, and the protruding pillar may pass through a through slot on the connecting bracket;

The concave portion may be a concave arc surface, and the concave arc surface may revolve and cooperate with the convex column.

In the above-mentioned realization process, through the cooperation of the concave arc surface and the convex column, the driving mechanism can have a better revolving and deflection effect.

In the embodiment of the present application, optionally, the protruding part is a protrusion, the end surface of the protrusion is arc-shaped, and the recessed part is an arc-shaped groove.

In the embodiment of the present application, optionally, the revolving matching portion is a hemispherical convex portion.

In the embodiment of the present application, optionally, the revolving matching portion is a straight contact portion.

Optionally, the pressure sensing element is a Hall sensor.

Optionally, the through groove is an elongated through groove.

Optionally, the predetermined element is the driving mechanism;

When the pressure sensing element is triggered, the controller may control the output power of the driving mechanism to decrease, or control the driving mechanism to stop outputting power.

In the above-mentioned realization process, by controlling the output power of the driving mechanism to decrease, or controlling the driving mechanism to stop the output power, the probability of damage to the user's gums and oral cavity can be better reduced.

Optionally, a buzzer may be provided on the circuit board, and the predetermined element may be a buzzer;

When the pressure sensing element is triggered, the controller can control the buzzer to emit a warning protection sound.

In the above implementation process, by controlling the buzzer to emit a warning protection sound, the user can be prompted, so that the probability of damage to the user's gums and oral cavity can be better reduced.

Optionally, the pressure sensing element may be a mechanical limit switch.

In the foregoing implementation process, the mechanical travel switch is easier to trigger, which can better guarantee the pressure sensing effect of the pressure-sensitive electric toothbrush in the embodiment of the present application.

In addition, the embodiments of the present application provide a pressure-sensitive electric toothbrush, which may include a handle housing, a circuit board, a connecting bracket, a driving mechanism, and a toothbrush head.

The brush handle housing may have opposite first and second sides;

The circuit board may be arranged in the handle housing close to the first side of the handle housing along the length direction of the handle housing;

The outer side of the driving mechanism may be provided with a protruding part on a side close to the second side of the brush handle housing, and the end surface of the protruding part may be arc-shaped;

A through groove may be provided on the connecting bracket, and the protrusion on the outer side of the driving mechanism may pass through the through groove;

The inner side of the second side portion of the brush handle housing may be provided with a revolving matching portion, and the protruding portion may be revolvingly engaged with the revolving matching portion;

When the pressure sensing element is triggered, the controller may control a predetermined element to perform a preset protection operation.

In the foregoing implementation process, in the pressure-sensitive electric toothbrush of the embodiment of the present application, the circuit board is arranged in the handle housing close to the first side of the handle housing, and the connecting bracket and the driving mechanism are close to the handle in the handle housing. The top part of the housing is provided, and the driving mechanism is drivingly connected to the toothbrush head; the pressure sensing element arranged on the inner side of the circuit board or on the side of the driving mechanism close to the circuit board is connected to the controller, and the pressure sensing element is connected to the driving mechanism A pressing gap is left on the component or the circuit board, and the outer side of the driving component is provided with a convex part with an arc-shaped end surface on the side close to the second side part of the brush handle housing, and the convex part passes through the connecting bracket. The groove, the inner side of the second side of the handle housing is provided with a revolving cooperating portion, and the protruding portion revolves with the revolving cooperating portion. In the larger case, the toothbrush head will be offset relative to the handle due to greater compression. When the toothbrush head is offset, the toothbrush head will drive the driving mechanism through the rotation of the revolving mating part and the protruding part. Revolving deviation, the driving mechanism generates revolving deviation and then triggers the pressure sensing element. When the pressure sensing element is triggered, the controller controls the predetermined element to perform the preset protection operation. The preset protection operation performed by the predetermined element can be Reduce the chances of the user's gums and oral cavity being damaged.

In the embodiment of the present application, the driving mechanism may include a driving motor and a motor housing, and the motor housing may include a motor housing main body,

The driving motor may be arranged on the motor housing;

The driving motor may be drivingly connected with the toothbrush head;

When the pressure sensing element is arranged on the inner side of the circuit board, a pressing gap may be left between the pressure sensing element and the motor housing of the driving mechanism;

In the embodiment of the present application, the driving motor may be an ultrasonic vibration motor.

In the embodiment of the present application, the revolving matching portion may be a recessed portion, and the recessed portion may be arc-shaped.

In the embodiment of the present application, the protruding part may be a protruding pillar, the end surface of the protruding pillar may be arc-shaped, and the protruding pillar may pass through the through groove on the connecting bracket;

In the embodiment of the present application, the predetermined element may be the driving mechanism;

Description of the drawings

In order to more clearly describe the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application. Therefore, It should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other relevant drawings can be obtained from these drawings without creative work.

Figure 1 is a schematic partial cross-sectional view of a pressure-sensitive electric toothbrush provided by an alternative embodiment of the application;

Figure 2 is a partial enlarged view of Figure 1;

Fig. 3 is a schematic structural diagram of a motor housing provided by an alternative embodiment of the application.

Icon: 11-Brush handle housing; 111-first side; 112-second side; 113-projection; 12-circuit board; 13-connection bracket; 14-drive mechanism; 141-drive motor; 142 -Motor housing; 1421-Motor housing main body; 1422-Press plate; 1423-Revolving fitting part; 15-Toothbrush head; 16-Pressure sensing element.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present application.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", The orientation or positional relationship indicated by "vertical", "horizontal", "horizontal", "longitudinal" and the like is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element, or component must have a specific orientation, or be constructed and operated in a specific orientation.

In addition, some of the above terms may be used to indicate other meanings in addition to the orientation or position relationship. For example, the term "shang" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

In addition, the terms "installed", "set", "provided", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or a point connection; it can be directly connected, or indirectly connected through an intermediary, or between two devices, elements or components. The internal communication between. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.

In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the indicated device or element Or the relative importance and number of components. Unless otherwise specified, "plurality" means two or more.

1 and FIG. 2, wherein FIG. 1 is a schematic partial cross-sectional structure diagram of a pressure-sensitive electric toothbrush provided by an embodiment of the application, and FIG. 2 is a partial enlarged view of FIG. 1.

The pressure-sensitive electric toothbrush of the embodiment of the present application includes a handle housing 11, a circuit board 12, a connecting bracket 13, a driving mechanism 14 and a toothbrush head 15.

The handle housing 11 has a first side 111 and a second side 112 opposite to each other;

The circuit board 12 is arranged in the handle housing 11 close to the first side 111 of the handle housing 11 along the length direction of the handle housing 11;

The connecting bracket 13 is arranged in the handle housing 11 close to the top end of the handle housing 11;

The driving mechanism 14 is arranged in the handle housing 11 close to the top end of the handle housing 11, and the driving mechanism 14 is drivingly connected with the toothbrush head 15;

A pressure sensing element 16 is provided on the inner side of the circuit board 12 or on the side of the driving mechanism 14 close to the circuit board 12, and the pressure sensing element 16 is connected to a controller (not shown in the drawings) on the circuit board 12;

When the pressure sensing element 16 is arranged on the inner side of the circuit board 12, there is a pressing gap between the pressure sensing element 16 and the driving mechanism 14; when the pressure sensing element 16 is arranged on the driving mechanism 14 on the side close to the circuit board 12 When there is a pressing gap between the pressure sensing element 16 and the circuit board 12;

A protrusion 113 is provided on the inner side of the second side 112 of the handle housing 11, and the end surface of the protrusion 113 is arc-shaped;

The connecting bracket 13 is provided with a through groove, and the protrusion 113 on the second side 112 of the handle housing 11 passes through the through groove;

The outer side of the driving mechanism 14 is provided with a revolving fitting portion 1423 on the side close to the second side portion 112 of the handle housing 11, and the revolving fitting portion 1423 is revolving to cooperate with the protruding portion 113;

When the pressure sensing element 16 is triggered, the controller controls the predetermined element to perform a preset protection operation.

In this embodiment, when the toothbrush head 15 in FIG. 1 receives a large force, the toothbrush head 15 will shift upward relative to the handle. Because the driving mechanism 14 is drivingly connected to the toothbrush head 15, the driving mechanism 14 will also be The revolving offset occurs under the revolving cooperation of the revolving matching portion 1423 and the protruding portion 113.

In the pressure-sensitive electric toothbrush of the embodiment of the present application, the circuit board 12 is arranged in the handle housing 11 close to the first side 111 of the handle housing 11, and the connecting bracket 13 and the driving mechanism 14 are located close to the brush in the handle housing 11 The top end of the handle housing 11 is provided, and the driving mechanism 14 is drivingly connected to the toothbrush head 15; the pressure sensing element 16 and the controller ( The drawings are not shown) are connected, and the pressure sensing element 16 is left with a pressing gap with the driving mechanism 14 or the circuit board 12. The inner side of the second side 112 of the handle housing 11 is provided with a convex part with an arc-shaped end surface. 113. The protruding portion 113 passes through the through slot on the connecting bracket 13, and the outer side of the driving mechanism 14 is provided with a revolving fitting portion 1423 on the side close to the second side 112 of the handle housing 11, which revolves to fit The portion 1423 and the protruding portion 113 revolve and cooperate. When the pressure-sensitive electric toothbrush of the embodiment of the present application is in use, when the toothbrush head 15 is subjected to a large force, the toothbrush head 15 will be relatively squeezed against the handle. When the toothbrush head 15 deviates, the toothbrush head 15 drives the driving member 14 to rotate and deviate through the rotation cooperation of the revolving cooperating portion 1423 and the protrusion 113, and the driving member 14 revolves and deviates Then the pressure sensing element 16 is triggered. When the pressure sensing element 16 is triggered, the controller controls the predetermined element to perform a preset protection operation. The preset protection operation performed by the predetermined element can reduce the chance of the user's gums and oral cavity being damaged. .

See FIG. 1, FIG. 2 and FIG. 3, where FIG. 3 is a schematic structural diagram of a motor housing 142 provided by an embodiment of the application.

In this embodiment, the driving mechanism 14 includes a driving motor 141 and a motor housing 142,

The driving motor 141 is arranged on the motor housing 142;

The driving motor 141 is drivingly connected with the toothbrush head 15;

When the pressure sensing element 16 is disposed on the inner side of the circuit board 12, there is a pressing gap between the pressure sensing element 16 and the motor housing 142 of the driving mechanism 14;

When the pressure sensing element 16 is disposed on the side of the driving mechanism 14 that is close to the circuit board 12, the pressure sensing element 16 is disposed on the side of the motor housing 142 of the driving mechanism 14 that is close to the circuit board 12;

The revolving matching portion 1423 is disposed on the motor housing 142 of the driving component 14.

When the toothbrush head 15 deviates, the toothbrush head 15 drives the drive motor 141 to deviate, and the drive motor 141 deviates and drives the motor housing 142 to revolve through the revolving cooperation of the revolving matching portion 1423 and the protruding portion 113. Therefore, the pressure sensing element 16 is triggered, the structure of the driving mechanism 14 and the setting of the revolving cooperating portion 1423 are more reasonable and scientific, which avoids the revolving cooperating portion 1423 being directly arranged on the driving motor 141, which better guarantees the driving mechanism The upper revolving mating portion 1423 is revolvingly matched with the protruding portion 113 on the handle housing 11.

Specifically, the motor housing 142 includes a motor housing main body 1421 and a pressing plate 1422,

The pressure sensing element 16 is disposed on the inner side of the circuit board 12 close to the bottom end of the motor housing main body 1421, and the pressing plate 1422 is disposed on the bottom end of the motor housing main body 1421;

When the pressure sensing element 16 is disposed on the inner side of the circuit board 12, the pressing plate 1422 is close to the pressure sensing element 16, and there is a pressing gap with the pressure sensing element 16;

When the pressure sensing element 16 is disposed on the side of the driving mechanism 14 close to the circuit board 12, the pressure sensing element 16 is disposed on the pressing plate 1422 of the motor housing 142 on the side close to the circuit board 12;

The revolving matching portion 1423 is disposed on the motor housing main body 1421 of the driving mechanism 14.

The pressing plate 1422 is disposed at the bottom end of the motor housing main body 1421. When the driving motor 141 drives the motor housing main body 1421 to revolve and deviate, the press plate 1422 also follows the motor housing main body 1421 to revolve and deviate, thereby triggering the pressure sensing element 16. The arrangement of the pressing plate 1422 better guarantees the triggering of the pressure-sensing element 16, thereby better guaranteeing the pressure-sensing of the pressure-sensing electric toothbrush in the embodiment of the present application.

It should be noted that in other embodiments, the motor housing 142 may only include the motor housing main body 1421 without the pressing plate 1422. In this case, the pressure sensing element 16 may be located on the circuit board 12 at the bottom of the driving motor 141. Ends.

Referring to Figures 1 and 2, optionally, the predetermined element may be the driving mechanism 14;

When the pressure sensing element 16 is triggered, the controller controls the output power of the driving mechanism 14 to decrease, or controls the driving mechanism 14 to stop outputting power.

By controlling the output power of the driving mechanism 14 to decrease, or controlling the driving mechanism 14 to stop the output power, the probability of damage to the user's gums and oral cavity can be better reduced.

Optionally, a buzzer (not shown in the figure) is provided on the circuit board 12, and the predetermined component may also be a buzzer;

When the pressure sensing element 16 is triggered, the controller controls the buzzer to emit a warning and protection sound.

By controlling the buzzer to emit a warning and protection sound, the user can be prompted, which can better reduce the chance of the user's gums and oral cavity being damaged.

Referring to FIG. 1, in this embodiment, the driving motor 141 is an ultrasonic vibration motor.

The ultrasonic vibration motor can make the cleaning effect of the pressure-sensitive electric toothbrush of the embodiment of the present application better.

1 and 2, in this embodiment, the revolving mating portion 1423 is a recessed portion, and the recessed portion is arc-shaped.

The arc-shaped concave part can better revolve and cooperate with the arc-shaped convex part 113 on the end surface.

Specifically, the protruding part 113 is a protruding pillar, the end surface of the protruding pillar is arc-shaped, and the protruding pillar passes through the through slot on the connecting bracket 13;

The concave part is a concave arc surface, and the concave arc surface is revolvingly matched with the convex column.

Through the cooperation of the concave arc surface and the convex column, the driving mechanism 14 can have a better revolving and deflection effect.

It should be noted that in other embodiments, the revolving mating portion 1423 may also be a hemispherical protrusion, or the revolving mating portion 1423 may also be a straight contact portion.

In other embodiments, the protrusion 113 may also be a protrusion, and the end surface of the protrusion is arc-shaped. When the protrusion 113 is a protrusion, the recess is a groove, and the groove is an arc-shaped groove.

Referring to Fig. 1, in this embodiment, the pressure sensing element 16 is a mechanical limit switch.

The mechanical travel switch is easier to trigger, and can better guarantee the pressure sensing effect of the pressure-sensitive electric toothbrush in the embodiment of the present application.

It should be noted that in other embodiments, the pressure sensing element 16 may also be other components, such as a Hall sensor. Here, other components that may be used by the pressure sensing element 16 are not listed here.

Referring to Fig. 1, in this embodiment, the through slot is an elongated through slot.

The elongated through groove can facilitate the arrangement of the structure in the pressure-sensitive electric toothbrush of the embodiment of the present application.

It should be noted that the improvement of the pressure-sensitive electric toothbrush in the embodiment of the present application at least includes the above content. For the remaining content of the pressure-sensitive electric toothbrush in the embodiment of the present application, please refer to the electric toothbrush in the related art. In this embodiment, Do not repeat it.

1 and FIG. 2, wherein FIG. 1 is a schematic partial cross-sectional structure diagram of the pressure-sensitive electric toothbrush provided by the foregoing embodiment of the application, and FIG. 2 is a partial enlarged view of FIG. 1.

The outer side of the driving mechanism 14 is provided with a protruding part on the side close to the second side 112 of the handle housing 11, and the end surface of the protruding part is arc-shaped;

The connecting bracket 13 is provided with a through slot, and the protruding part on the outer side of the driving mechanism 14 passes through the through slot;

The inner side of the second side 112 of the handle housing 11 is provided with a revolving fitting part, and the protruding part is revolvingly matched with the revolving fitting part;

The main difference between the pressure-sensitive electric toothbrush of the embodiment of the present application and the pressure-sensitive electric toothbrush of the previous embodiment includes the interchange of the positions of the protruding part and the revolving matching part.

In this embodiment, when the toothbrush head 15 in FIG. 1 receives a large force, the toothbrush head 15 will shift upward relative to the handle. Because the driving mechanism 14 is drivingly connected to the toothbrush head 15, the driving mechanism 14 will also be The revolving offset occurs under the revolving cooperation of the revolving mating part and the protruding part.

In the pressure-sensitive electric toothbrush of the embodiment of the present application, the circuit board 12 is arranged in the handle housing 11 close to the first side 111 of the handle housing 11, and the connecting bracket 13 and the driving mechanism 14 are located close to the brush in the handle housing 11 The top part of the handle housing 11 is provided, and the driving mechanism 14 is drivingly connected with the toothbrush head 15; the pressure sensing element 16 and the controller ( The drawing is not shown) is connected, and the pressure sensing element 16 is left with a pressing gap with the driving mechanism 14 or the circuit board 12. The outer side of the driving mechanism 14 is on the side close to the second side 112 of the handle housing 11. A protruding part with an arc-shaped end surface is provided, and the protruding part passes through the through groove on the connecting bracket 13, and the inner side of the second side 112 of the handle housing 11 is provided with a revolving matching part. The mating part rotates and cooperates. When the pressure-sensing electric toothbrush of the embodiment of the present application is in use, when the toothbrush head 15 is subjected to a large force, the toothbrush head 15 will be offset relative to the handle due to a large compression. When the toothbrush head 15 is offset, the toothbrush head 15 drives the driving member 14 to rotate and deviate through the rotation cooperation of the revolving matching part and the protruding part, and the driving member 14 rotates and deviates to trigger the pressure sensing element 16. When the pressure sensing element 16 is triggered, the controller controls the predetermined element to perform a preset protection operation. The preset protection operation performed by the predetermined element can reduce the chance of the user's gums and oral cavity being damaged.

For the rest of the content of the pressure-sensitive electric toothbrush in the embodiments of the present application, reference may be made to the specific content of the foregoing embodiments, which will not be repeated here.

Refer to FIG. 1, FIG. 2 and FIG. 3, where FIG. 3 is a schematic diagram of the structure of the motor housing provided by the foregoing embodiment of the application.

In this embodiment, the protruding portion provided on the driving mechanism 14 is provided on the motor housing main body 1421 of the driving mechanism 14.

In all the above embodiments, "big" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The way of expression of terms will not be repeated in the embodiment of this application.

It should be understood that the “in this embodiment”, “in the embodiment of this application” or “as an optional implementation” mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments include In at least one embodiment of the application. Therefore, the appearances of "in this embodiment", "in the embodiment of this application" or "as an optional implementation" appearing in various places throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily required by the application.

In the various embodiments of the present application, it should be understood that the size of the sequence number of the foregoing processes does not mean the necessary sequence of the execution sequence. The execution sequence of each process should be determined by its function and internal logic, and should not be implemented in this application. The implementation process of the example constitutes any limitation.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Industrial applicability

The present application provides a pressure-sensitive electric toothbrush, which reduces the chance of the user's gums and oral cavity being damaged when the toothbrush head is subjected to greater force, and improves the user's use experience.

In addition, it can be understood that the pressure-sensitive electric toothbrush of the present application is reproducible and can be widely used in the field of sanitary appliances.

Claims

A pressure-sensitive electric toothbrush, which is characterized by comprising a handle housing, a circuit board, a connecting bracket, a driving mechanism and a toothbrush head,

The brush handle housing has a first side and a second side opposite to each other;

The circuit board is arranged in the brush handle housing close to the first side of the brush handle housing along the length direction of the brush handle housing;

The connecting bracket is arranged in the handle housing close to the top end of the handle housing;

The driving mechanism is arranged in the handle housing close to the top end of the handle housing, and the driving mechanism is drivingly connected with the toothbrush head;

A pressure sensing element is provided on the inner side of the circuit board or on the side of the driving mechanism close to the circuit board, and the pressure sensing element is connected to the controller on the circuit board;

When the pressure sensing element is arranged on the inner side of the circuit board, there is a pressing gap between the pressure sensing element and the driving mechanism; when the pressure sensing element is arranged on the driving mechanism close to the When on one side of the circuit board, a pressing gap is left between the pressure sensing element and the circuit board;

A protruding part is provided on the inner side of the second side part of the brush handle housing, and the end surface of the protruding part is arc-shaped;

A through groove is provided on the connecting bracket, and the protruding part on the second side of the brush handle housing passes through the through groove;

The outer side of the driving mechanism is provided with a revolving matching portion on a side close to the second side portion of the brush handle housing, and the revolving matching portion is revolving to cooperate with the protruding portion;

When the pressure sensing element is triggered, the controller controls the predetermined element to perform a preset protection operation.
The pressure-sensitive electric toothbrush according to claim 1, wherein the driving mechanism includes a driving motor and a motor housing,

The driving motor is arranged on the motor housing;

The driving motor is drivingly connected with the toothbrush head;

When the pressure sensing element is arranged on the inner side of the circuit board, a pressing gap is left between the pressure sensing element and the motor housing of the driving mechanism;

When the pressure sensing element is disposed on the side of the driving mechanism close to the circuit board, the pressure sensing element is disposed on the motor housing of the driving mechanism close to the circuit board On one side

The revolving matching portion is arranged on the motor housing of the driving mechanism.
The pressure-sensitive electric toothbrush according to claim 2, wherein the motor housing includes a motor housing main body and a pressing plate,

The pressure sensing element is disposed on the inner side of the circuit board close to the bottom end of the motor housing body, and the pressing plate is disposed on the bottom end of the motor housing body;

When the pressure sensing element is arranged on the inner side of the circuit board, the pressing plate is close to the pressure sensing element and leaves the pressing gap with the pressure sensing element;

When the pressure sensing element is disposed on the side of the driving mechanism close to the circuit board, the pressure sensing element is disposed on the pressing plate of the motor housing close to the circuit board. On one side

The revolving matching portion is arranged on the motor housing main body of the driving mechanism.
The pressure-sensitive electric toothbrush according to claim 2 or 3, wherein the driving motor is an ultrasonic vibration motor.
The pressure-sensitive electric toothbrush according to any one of claims 1 to 4, wherein the revolving matching portion is a recessed portion, and the recessed portion is arc-shaped.
The pressure-sensing electric toothbrush according to claim 5, wherein the protruding portion is a protruding column, the end surface of the protruding column is arc-shaped, and the protruding column passes through the connecting bracket on the connecting bracket. groove;

The concave portion is a concave arc surface, and the concave arc surface is revolvingly matched with the convex column.
The pressure-sensitive electric toothbrush according to claim 5, wherein the protruding part is a convex block, the end surface of the convex block is arc-shaped, and the recessed part is an arc-shaped groove.
The pressure-sensitive electric toothbrush according to any one of claims 1 to 4, wherein the revolving matching portion is a hemispherical convex portion.
The pressure-sensitive electric toothbrush according to any one of claims 1 to 4, wherein the revolving matching portion is a straight contact portion.
The pressure-sensitive electric toothbrush according to any one of claims 1-9, wherein the pressure-sensitive element is a Hall sensor.
The pressure-sensitive electric toothbrush according to any one of claims 1-10, wherein the through groove is an elongated through groove.
The pressure-sensitive electric toothbrush according to any one of claims 1-11, wherein the predetermined element is the driving mechanism;

When the pressure sensing element is triggered, the controller controls the output power of the driving mechanism to decrease, or controls the driving mechanism to stop outputting power.
The pressure-sensitive electric toothbrush according to any one of claims 1-12, wherein a buzzer is provided on the circuit board, and the predetermined element is a buzzer;

When the pressure sensing element is triggered, the controller controls the buzzer to emit a warning protection sound.
The pressure-sensitive electric toothbrush according to any one of claims 1-13, wherein the pressure-sensitive element is a mechanical limit switch.
A pressure-sensitive electric toothbrush, which is characterized by comprising a handle housing, a circuit board, a connecting bracket, a driving mechanism and a toothbrush head,

The brush handle housing has a first side and a second side opposite to each other;

The circuit board is arranged in the brush handle housing close to the first side of the brush handle housing along the length direction of the brush handle housing;

The connecting bracket is arranged in the handle housing close to the top end of the handle housing;

The driving mechanism is arranged in the handle housing close to the top end of the handle housing, and the driving mechanism is drivingly connected with the toothbrush head;

A pressure sensing element is provided on the inner side of the circuit board or on the side of the driving mechanism close to the circuit board, and the pressure sensing element is connected to the controller on the circuit board;

When the pressure sensing element is arranged on the inner side of the circuit board, there is a pressing gap between the pressure sensing element and the driving mechanism; when the pressure sensing element is arranged on the driving mechanism close to the When on one side of the circuit board, a pressing gap is left between the pressure sensing element and the circuit board;

The outer side of the driving mechanism is provided with a protruding part on the side close to the second side of the brush handle housing, and the end surface of the protruding part is arc-shaped;

A through groove is provided on the connecting bracket, and the protruding part on the outer side of the driving mechanism passes through the through groove;

A revolving fitting portion is provided on the inner side of the second side portion of the brush handle housing, and the protruding portion is revolvingly engaged with the revolving fitting portion;

When the pressure sensing element is triggered, the controller controls the predetermined element to perform a preset protection operation.
The pressure-sensitive electric toothbrush according to claim 15, wherein the driving mechanism includes a driving motor and a motor housing, and the motor housing includes a motor housing main body,

The driving motor is arranged on the motor housing;

The driving motor is drivingly connected with the toothbrush head;

When the pressure sensing element is arranged on the inner side of the circuit board, a pressing gap is left between the pressure sensing element and the motor housing of the driving mechanism;

When the pressure sensing element is disposed on the side of the driving mechanism close to the circuit board, the pressure sensing element is disposed on the motor housing of the driving mechanism close to the circuit board On one side

The revolving matching portion is arranged on the motor housing main body of the driving mechanism.
The pressure-sensitive electric toothbrush according to claim 15 or 16, wherein the driving motor is an ultrasonic vibration motor.
The pressure-sensitive electric toothbrush according to any one of claims 15-17, wherein the revolving matching portion is a recessed portion, and the recessed portion is arc-shaped.
The pressure-sensitive electric toothbrush according to claim 18, wherein the protruding part is a protruding column, the end surface of the protruding column is arc-shaped, and the protruding column passes through the connecting bracket on the connecting bracket. groove;

The concave portion is a concave arc surface, and the concave arc surface is revolvingly matched with the convex column.
The pressure-sensitive electric toothbrush according to any one of claims 15-19, wherein the predetermined element is the driving mechanism;

When the pressure sensing element is triggered, the controller controls the output power of the driving mechanism to decrease, or controls the driving mechanism to stop outputting power.