CN218128841U

CN218128841U - Electric toothbrush with pressure control

Info

Publication number: CN218128841U
Application number: CN202222257671.9U
Authority: CN
Inventors: 杨桧; 杨坤; 付丰鸿; 黄朝禹
Original assignee: Tai Shen Technology Shenzhen Co ltd
Current assignee: Tai Shen Technology Shenzhen Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-12-27
Anticipated expiration: 2032-08-26

Abstract

The utility model provides an electric toothbrush with pressure control, which comprises a cleaning part, a shell, a driving part, a control part and a pressure detection part; the pressure detection part is electrically connected with the control part, the control part is electrically connected with the driving part, and the driving part is in transmission connection with the cleaning part; the pressure detection part comprises a pressure sensor and an elastic piece; the pressure sensor is arranged opposite to the elastic piece, and is abutted against the elastic piece in an initial state to form extrusion; the pressure sensor outputs corresponding pressure signal variation based on the variation of the pressure; the control part is used for acquiring the pressure signal variation and controlling the driving part to correspondingly execute the starting operation, the rotating speed adjustment or the pause operation when the pressure signal variation reaches a preset starting threshold, an adjustment threshold or a pause threshold. The utility model discloses the size of the pressure variation volume that the accessible setting sensed at the inside pressure sensor of electric toothbrush, automatic control electric toothbrush's start-up, speed governing and stop.

Description

Electric toothbrush with pressure control

Technical Field

The utility model relates to an electric toothbrush technical field, in particular to electric toothbrush with pressure control.

Background

With the development of science and technology, electric toothbrushes gradually replace conventional manual toothbrushes due to the advantages of strong cleaning ability, easy use and the like, and become necessities of daily life of people. The electric toothbrush is mainly controlled to start and stop and cleaning strength through a control button arranged outside, and a user selects the cleaning strength of different gears according to own use requirements. However, in many cases, when the user uses the electric toothbrush, the user often exerts force unconsciously, and the excessive force often causes gum damage.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an electric toothbrush of area pressure-sensitive control, the accessible sets up the size at the pressure variation volume that electric toothbrush inside pressure sensor sensed, automatic control electric toothbrush's start-up, speed governing and stop.

The technical scheme of the utility model as follows:

an electric toothbrush with pressure control comprises a cleaning part, a shell, a driving part, a control part and a pressure detection part; the shell is provided with an accommodating cavity, and the driving part, the control part and the pressure detection part are accommodated in the accommodating cavity; the pressure detection part is electrically connected with the control part, the control part is electrically connected with the driving part, and the driving part is in transmission connection with the cleaning part; the pressure detection part comprises a pressure sensor and an elastic piece; the pressure sensor is arranged opposite to the elastic piece, and is abutted against the elastic piece in an initial state to form extrusion; the pressure sensor outputs corresponding pressure signal variation based on the variation of the pressure; the cleaning part comprises a toothbrush head and a connecting shaft; the pressure detection part is clamped between the connecting shaft and the shell; the control part is used for acquiring the pressure signal variation and controlling the driving part to correspondingly execute the starting, rotating speed adjusting or suspending operation when the pressure signal variation reaches a preset starting threshold, a preset adjusting threshold or a preset suspending threshold.

Alternatively, one of the pressure sensor and the elastic member is provided on a side close to the connecting shaft, and the other is provided on a side close to the housing.

As an alternative, when the elastic element is arranged at one side close to the shell, a limit groove for accommodating the elastic element is arranged on the shell; or when the elastic piece is arranged at one side close to the connecting shaft, the connecting shaft is provided with a limit groove for accommodating the elastic piece; the inner contour of the limiting groove is matched with the outer contour of the elastic piece.

As an alternative, an interference fit is adopted between the elastic piece and the limiting groove; or, the elastic piece and the limiting groove are in clearance fit, and the elastic piece is fixed in the limiting groove in a bonding mode.

As an alternative, the elastic member is any one of a silica gel elastic member, a metal elastic sheet and a foam elastic member.

As an alternative, the pressure-sensitive detection portion further includes a signal transmission portion; the signal transmission part is arranged on one side, away from the elastic part, of the pressure sensor and is electrically connected with the pressure sensor and the control part respectively.

Alternatively, the signal transmission portion is provided on the connecting shaft, the pressure sensor is provided on the signal transmission portion, and the elastic member is provided on the housing.

Alternatively, the signal transmission portion is a rigid PCB board, or an FPC provided with a reinforcing board.

As an alternative, one side of the toothbrush head is provided with a brush; one end of the connecting shaft is arranged in the shell and connected with the driving part, and the other end of the connecting shaft penetrates out of the shell and is connected with the toothbrush head.

As an alternative, the pressure sensor is arranged at the same side of the brush of the toothbrush head, and the pressure signal variable quantity is adjusted by releasing the extrusion force between the pressure sensor and the elastic piece.

As an alternative, the pressure sensor is arranged away from the brush of the toothbrush head, and the pressure signal variable quantity is adjusted by increasing the extrusion force between the pressure sensor and the elastic piece.

Has the beneficial effects that:

the utility model discloses an electric toothbrush sets up pressure sensor in electric toothbrush, uses through the cooperation of structures such as pressure sensor and elastic component, makes the pressure sensor can the sensitive size of the pressure variation of sensing to and based on this automatic control electric toothbrush's start-up, speed governing and stop, realize intelligent control, in order to avoid electric toothbrush to cause the harm to user's gum; meanwhile, the starting of the electric toothbrush is controlled by the pressure change value sensed by the pressure sensor, so that the problem that toothpaste splashes when the toothbrush is started when the toothbrush is not placed in the mouth of a user can be avoided.

Drawings

FIG. 1 is a schematic view of a pressure-sensitive controlled electric toothbrush;

FIG. 2 is a cross-sectional view of an electric toothbrush with pressure-sensitive control;

FIG. 3 is a cross-sectional view of another powered toothbrush with pressure control;

FIG. 4 is an enlarged partial view of region D of FIG. 3;

fig. 5 is a cross-sectional view of yet another powered toothbrush with pressure sensitive controls.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and specific embodiments, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides an electric toothbrush 1 with pressure control, the electric toothbrush 1 with pressure control mainly includes a cleaning portion 11, a housing 12, a driving portion 13, a control portion (not shown), and a pressure detection portion 14, the housing 12 has a containing cavity, and the driving portion 13, the control portion, and the pressure detection portion 14 are all contained in the containing cavity of the housing 12. The driving part 13 is connected with the cleaning part 11 in a transmission way to drive the cleaning part 11 to vibrate, the pressure sensing part 14 is electrically connected with the control part to transmit the detected pressure to the control part, and the control part is electrically connected with the driving part 13 and controls the operation of the driving part 13 according to the pressure detected by the pressure sensing part.

Referring to fig. 2 to 4, specifically, the cleaning unit 11 includes a toothbrush head 111 and a connecting shaft 112, one end of the connecting shaft 112 is connected to the driving unit 13, the other end of the connecting shaft 112 penetrates out of the housing 12 and is connected to the toothbrush head 111, and the pressure-sensitive detecting unit 14 is interposed between the connecting shaft 112 and the housing 12. More specifically, the pressure-sensitive detecting portion 14 includes a pressure sensor 142, an elastic member 141, and a signal transmitting portion 143, the pressure sensor 142 is disposed opposite to the elastic member 141, the signal transmitting portion 143 is disposed on a side of the pressure sensor 142 away from the elastic member 141 and electrically connected to the pressure sensor 142, and the signal transmitting portion 143 is also electrically connected to the control portion through a conductive wire.

In the present invention, one of the pressure sensor 142 and the elastic member 141 is disposed at a side close to the connecting shaft 112, and the other is disposed at a side close to the housing 12. As shown in fig. 2, as an embodiment, a signal transmitting portion 143 is provided on the housing 12, a pressure sensor 142 is provided on the signal transmitting portion 143, and an elastic member 141 is provided on the connecting shaft 112; as another embodiment, as shown in fig. 3, a signal transmitting portion 143 is provided on the connecting shaft 112, a pressure sensor 142 is provided on the signal transmitting portion 143, and an elastic member 141 is provided on the housing 12.

With reference to fig. 4, when the elastic element 141 is disposed near one side of the housing 12, the housing 12 is provided with a limiting groove 121 for accommodating the elastic element 141, and an inner contour of the limiting groove 121 is adapted to an outer contour of the elastic element 141 to limit the elastic element 141, so as to facilitate the early installation and assembly of the elastic element 141. The elastic part 141 and the limiting groove 121 can be in interference fit, so that the elastic part 141 can be directly clamped in the limiting groove 121, and the overall structure is simpler; the elastic member 141 and the limiting groove 121 may also be in clearance fit, and the elastic member 141 is fixed in the limiting groove 121 by adhesion. It is understood that when the elastic member 141 is disposed at a side close to the connection shaft 112, the same stopper groove 121 may be disposed on the connection shaft 112. Of course, in other embodiments, the limiting groove 121 may not be provided, and the elastic element 141 is directly positioned on the housing 12 or the connecting shaft 112 by adhesion.

The utility model discloses in, signal transmission portion 143 can be the PCB board of stereoplasm, also can be for being provided with the FPC of reinforcing plate. In other embodiments, the signal transmission unit 143 may not be provided, and the control unit is directly electrically connected to the pressure sensor 142, and directly obtains the pressure signal change of the pressure sensor 142 and converts the pressure parameter into the electrical parameter.

The utility model discloses do not do specific restriction to elastic component 141's material, elastic component 141 can be for adopting the silica gel elastic component that the silica gel preparation formed, and elastic component 141 also can be for adopting the cotton preparation of bubble cotton elastic component that forms of bubble, and elastic component 141 still can be for adopting the metal shrapnel that the metal preparation formed. Preferably, the elastic member 141 according to the embodiment of the present invention is a silicone elastic member. Adopt the silica gel elastic component as elastic component 141 can be better transmission pressure, and silica gel chemical property is stable, can be high temperature and low temperature resistant, difficult emergence damage has further improved elastic component 141's life.

In the present invention, in the initial state, the elastic member 141 is inconsistent with the pressure sensor 142, i.e. the elastic member 141 extrudes the pressure sensor 142 in the initial state, and the pressure sensor 142 is extruded to generate an initial signal. The pressure sensor 142 is configured to detect a change in a pressure parameter when the pressure sensor is pressed, the signal transmission unit 143 is configured to acquire the change in the pressure parameter and convert the changed pressure parameter into an electrical parameter to transmit the electrical parameter to the control unit, and the control unit determines whether to send a control signal according to the magnitude of the electrical parameter. That is, whether the control section outputs the control signal is derived from the amount of change in the pressure parameter of the pressure sensor 142. When the extrusion force applied to the pressure sensor 142 is changed, the pressure parameter output by the pressure sensor 142 is changed, and when the change amount reaches a set value, the control part outputs a control signal. Therefore, in the initial state, the problem of poor consistency due to mounting errors can be avoided by applying a certain initial pressure to the pressure sensor 142 by the elastic member 141, and the accuracy of the detection result of the pressure-sensitive detection unit 14 can be further improved in a mass production process.

In the utility model, because the pressure sensor 142 and the elastic member 141 are arranged relatively, the elastic member 141 and the pressure sensor 142 are in contact with each other and extrude the sensing area 131 in the initial state, therefore, when the pressure sensor 142 and the elastic member 141 are close to each other, the elastic member 141 can continuously extrude the pressure sensor 142, and the pressure applied to the pressure sensor 142 is increased, so that the pressure parameter is changed; similarly, when the pressure sensor 142 and the elastic element 141 are away from each other, the elastic element 141 releases the pressing force of the pressure sensor 142, and the pressing force applied to the pressure sensor 142 is reduced, so that the magnitude of the pressure parameter can be changed.

It will be appreciated that the user will primarily position the brush of the toothbrush head 111 against the teeth when the user is using the electric toothbrush, and when the user squeezes the brush hard, the force will be transmitted through the toothbrush head 111 to the shaft 112, and the shaft 112 will be forced to deflect in a direction which is primarily opposite to the direction of the brush of the toothbrush head 111 (as shown in direction a in fig. 1-3), so that the shaft 112 will deflect in a direction which is opposite to the direction of the brush (as shown in direction a in fig. 1-3). The utility model discloses in, in order to be more effectual the size of control toothbrush head 111 atress in order to in time adjust the running state of drive division 13 according to the atress size, pressure sensor 142 accomplishes its atress direction parallel with the orientation of toothbrush head 111's brush after the installation. That is, the force direction of the pressure sensor 142 may be the same as the direction of the brush head 111, and the force direction of the pressure sensor 142 may be opposite to the direction of the brush head 111. That is, the pressure sensor 142 may be installed at the same side as the brush or at a side away from the brush.

With continued reference to fig. 2 and 3, as an embodiment, the pressure sensor 142 is mounted on the same side as the brush. In the present embodiment, different control is achieved by releasing the pressing force between the pressure sensor 142 and the elastic member 141. It can be understood that, when the user squeezes the brush with force, the connecting shaft 112 is forced to deflect in the direction opposite to the direction of the brush, and since either the pressure sensor 142 or the elastic member 141 is disposed on the connecting shaft 112 and the other one is disposed on the housing 12, the deflection of the connecting shaft 112 will cause the pressure sensor 142 and the elastic member 141 to be far away from each other, and the elastic member 141 will reduce the squeezing force applied to the pressure sensor 142, so that the squeezing force applied to the pressure sensor 142 changes.

Referring to fig. 5, as another embodiment, a pressure sensor 142 is installed at a side of the connection shaft 112 facing away from the brush. In the present embodiment, different control is realized by increasing the pressing force between the pressure sensor 142 and the elastic member 141. It can be understood that, when the user presses the brush with force, the connection shaft 112 is forced to deflect in the direction opposite to the direction of the brush, and since either the pressure sensor 142 or the elastic member 141 is disposed on the connection shaft 112 and the other one is disposed on the housing 12, the deflection of the connection shaft 112 will cause the pressure sensor 142 and the elastic member 141 to approach each other, and the elastic member 141 will increase the pressing force applied to the pressure sensor 142, so that the pressing force applied to the pressure sensor 142 changes.

In the present invention, the control of the driving portion 13 mainly includes the following aspects:

when the amount of change in the signal of the pressure sensor 142 reaches the activation threshold, the control section controls the driving section 13 to activate. The purpose of this is to avoid that the driving part 13 is already started when the toothbrush head 111 is not put into the oral cavity, and the started driving part 13 will drive the toothbrush head 111 to vibrate and further cause the toothpaste to splash. It can be understood, when toothbrush head 111 put into the oral cavity, the brush can contact with the tooth and produce the extrusion force, and the extrusion force can transmit to connecting axle 112 through toothbrush head 111, by last can, connecting axle 112 atress can take place to deflect and then lead to the extrusion force that pressure sensor 142 received to change, and when the change volume reached the start threshold value of settlement, control part control drive division 13 started, and toothbrush head 111 was in user's oral cavity this moment, and then can avoid splashing of toothpaste.

When the amount of change in the signal of the pressure sensor 142 reaches the adjustment threshold, the control unit adjusts the rotation speed of the driving unit 13. This is to prevent excessive squeezing force between the brush head 111 and the teeth and damage to the gums. It can be understood that the brush contacts with the teeth to generate an extrusion force during the tooth brushing process, when the extrusion force is large, if the rotation speed of the driving part 13 is kept unchanged, the superimposed vibration force can cause damage to the gums, and in order to avoid this phenomenon, when the extrusion force between the brush and the teeth is too large, the rotation speed of the driving part 13 can be reduced to reduce the damage to the gums. Therefore, when the variation of the pressing force applied to the pressure sensor 142 reaches the set adjustment threshold, the control unit controls the rotation speed of the driving unit 13, so as to reduce the damage of the brush to the gum.

When the amount of change in the signal of the pressure sensor 142 reaches the pause threshold, the control section controls the driving section 13 to pause. It can be understood that when the squeezing force between the brush and the teeth is too large, the gum may be damaged even if the rotation speed of the driving part 13 is reduced, and at this time, the driving part 13 should be controlled to stop rotating to remind the user to control the brushing force.

It will be appreciated that the start threshold is less than the adjustment threshold, which is less than the pause threshold.

The utility model discloses a whole control process all comes automatic the control through the size of the pressure variation volume that pressure sensor 142 sensed, and the change of pressure sensor 142 pressure size derives from the size of toothbrush head 111 atress, therefore whole control process is more intelligent and high-efficient.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An electric toothbrush with pressure control is characterized by comprising a cleaning part, a shell, a driving part, a control part and a pressure detection part; the shell is provided with an accommodating cavity, and the driving part, the control part and the pressure detection part are accommodated in the accommodating cavity; the pressure detection part is electrically connected with the control part, the control part is electrically connected with the driving part, and the driving part is in transmission connection with the cleaning part;

the pressure detection part comprises a pressure sensor and an elastic piece; the pressure sensor and the elastic piece are oppositely arranged and are abutted to each other under an initial state to form extrusion; the pressure sensor outputs corresponding pressure signal variation based on the variation of the pressure;

the cleaning part comprises a toothbrush head and a connecting shaft, and the pressure-sensitive detection part is clamped between the connecting shaft and the shell;

the control part is used for acquiring the pressure signal variation and controlling the driving part to correspondingly execute the starting, rotating speed adjusting or suspending operation when the pressure signal variation reaches a preset starting threshold, a preset adjusting threshold or a preset suspending threshold.

2. The electric toothbrush according to claim 1, wherein one of the pressure sensor and the elastic member is disposed at a side close to the connection shaft, and the other is disposed at a side close to the housing.

3. The electric toothbrush according to claim 2, wherein the housing is provided with a stopper groove for receiving the elastic member when the elastic member is disposed at a side close to the housing; or when the elastic piece is arranged at one side close to the connecting shaft, the connecting shaft is provided with a limit groove for accommodating the elastic piece; the inner contour of the limiting groove is matched with the outer contour of the elastic piece.

4. The powered toothbrush as defined in claim 3, wherein the resilient member is in interference fit with the retaining groove; or, the elastic piece and the limiting groove are in clearance fit, and the elastic piece is fixed in the limiting groove in a bonding mode.

5. The electric toothbrush according to claim 1, wherein the elastic member is any one of a silicone elastic member, a metal dome, and a foam elastic member.

6. The electric toothbrush according to claim 1, wherein the pressure-sensitive detection part further comprises a signal transmission part; the signal transmission part is arranged on one side, away from the elastic part, of the pressure sensor and is electrically connected with the pressure sensor and the control part respectively.

7. The electric toothbrush according to claim 6, wherein the signal transmission part is provided on the connection shaft, the pressure sensor is provided on the signal transmission part, and the elastic member is provided on the housing.

8. The electric toothbrush according to claim 6, wherein the signal transmission part is a rigid PCB board or an FPC provided with a reinforcing board.

9. The electric toothbrush according to any one of claims 1 to 8, wherein a brush is provided to one side of the toothbrush head; one end of the connecting shaft is arranged in the shell and connected with the driving part, and the other end of the connecting shaft penetrates out of the shell and is connected with the toothbrush head.

10. The electric toothbrush according to claim 9, wherein the pressure sensor is provided on the same side as a brush of the toothbrush head, and the pressure signal variation is adjusted by releasing the pressing force between the pressure sensor and the elastic member; alternatively, the first and second electrodes may be,

pressure sensor deviates from the setting with the brush of toothbrush head, adjusts through the extrusion force that increases between pressure sensor and the elastic component pressure signal variation.