CN208611021U - Photosensitive pressure warning unit for electric cleaning care appliance - Google Patents
Photosensitive pressure warning unit for electric cleaning care appliance Download PDFInfo
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- CN208611021U CN208611021U CN201721518708.1U CN201721518708U CN208611021U CN 208611021 U CN208611021 U CN 208611021U CN 201721518708 U CN201721518708 U CN 201721518708U CN 208611021 U CN208611021 U CN 208611021U
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Abstract
For the photosensitive pressure warning unit of electric cleaning care appliance, including be made of at least one light source and at least one photosensitive unit light sensing part, in face of the light reflecting surface, detection circuit and alarm portion of the light source and photosensitive unit.Light source and photosensitive unit are disposed relative on the moveable movable member of handle casing or the stationary parts motionless relative to handle casing and in ipsilateral, light reflecting surface is arranged on the stationary parts or movable member of light source and that side of photosensitive unit, substantially face light source and photosensitive unit.Under the collective effect of the elastic force for the resistance external force that external force and the elastic component being built in handle generate, light source on movable member and photosensitive unit are set or light reflecting surface can be mobile with movable member, pass through the variation of the incidence angle and angle of reflection of the light that is issued by light source in light reflecting surface, the light-receiving area for making it possible to receive the photosensitive unit of light changes, and then the electric property of photosensitive unit is caused to change.
Description
Technical field
The utility model relates to a kind of for electric cleaning care appliance, particularly for the pressure alarm dress of electric toothbrush
It sets more particularly to a kind of photosensitive pressure warning unit for electric cleaning care appliance.
Background technique
It is well known that dividing by driving type, existing electric cleaning care appliance is broadly divided into two seed types: the first kind
Electric cleaning care appliance uses the driver including micromotor, pinion unit, so that head drive shaft is driven with by motor
The movement of dynamic shank drive shaft and move (hereinafter referred to as driving type electric cleaning-nursing utensil)；The nursing of second class electric cleaning
Utensil is using the driver for including energy converter, driving coil, the driving coil iron core of setting in the drive coil, will input
Electric energy be converted to mechanical energy (hereinafter referred to as mode of resonance electric cleaning care appliance).
One kind is disclosed in the Chinese invention patent that the Authorization Notice No. that the applicant enjoys is CN102813558B to be used for
The pressure warning unit of electric cleaning care appliance has different operating electric under different loads using AC permanent magnet micro machine
The characteristic of stream, voltage sensor measure voltage value under use state and brush head rotation respectively but bristle not with will be clean
The voltage value of the original state of teeth contact obtains the difference of described two voltage values, when user is applied to the power on brush head
When being greater than the set value, detection module detects that the voltage difference on voltage sensor is greater than the set value, and IC issues signal, indicates mould
For reflecting that the corresponding indicator elment of pressure issues instruction in block, user is reminded to impose on the power on brush head excessive.
Though above scheme is able to achieve pressure alarm function, there are it is many interference AC permanent magnet micro machine operating currents because
Element, such as the harmonic wave that bristle and the frictional force of tooth, the shape of bristle, AC permanent magnet micro-motor commutator generate, to influence
The accuracy of pressure alarm.
Application publication number discloses for the Chinese invention patent application of 104619212A to be had using hall effect sensor
The electric toothbrush of the resonant drive of pressure-sensing capabilities.Wherein, magnet is positioned to the movement with brush head assembly and moved, Hall
Effect sensor is installed in the magnetic field generated by magnet, which has the phase shift relative to driving signal phase,
The phase shift that the Hall sensor as caused by brush element exports during brushing operation is determined using processor, and according in utensil
Make the information of phase-shift value storage relevant to load, generates the signal for indicating the load.
Utility model content
The purpose of this utility model is to provide a kind of photosensitive pressure warning unit for electric cleaning care appliance,
It can overcome the disadvantages that the deficiency of existing cleaning-nursing utensil warning device, improve the accuracy of pressure detecting and alarm.
Cleaning-nursing utensil provided by the utility model includes handle casing, driving assembly, the cleaning including cleaning element
Component and photosensitive pressure warning unit.The photosensitive pressure warning unit includes by least one light source and at least one photosensitive unit
The light sensing part of composition, light reflecting surface, detection circuit and alarm portion in face of the light source and photosensitive unit.The light
Source and photosensitive unit are disposed relative to the moveable movable member of handle casing or the stationary part motionless relative to handle casing
On part and it is in ipsilateral, stationary parts or movable member in face of light source and that side of photosensitive unit is arranged in the light reflecting surface
On, substantially face light source and photosensitive unit.On being applied to cleaning element, direction be approximately along or be parallel to cleaning element edge
The external force F of the axis of length direction1The resistance external force F generated with the elastic component being built in handle1Elastic component elastic force F2's
Under collective effect, keep the light source being disposed relative on the moveable movable member of handle casing and photosensitive unit or light anti-
Face is penetrated with movable member movement, incidence angle and angle of reflection of the light issued by light source in light reflecting surface become
Change, the light-receiving area for making it possible to receive the photosensitive unit of the light from light source changes, and then leads to photosensitive unit
Electric property changes.
Light source can be actively luminous stabilized light source, and it is aobvious that photosensitive unit can be resistance value or electric conductivity after light irradiates
Write the electronic device of variation.Preferred light source is light emitting diode (LED), and photosensitive unit is photo resistance.
For driving type electric cleaning-nursing utensil, driving assembly includes micromotor, gear-box, drive shaft, is driven
Dynamic component can be integrally around the rotating shaft axis L of brush head mouthpiece3Rotation；Handle casing includes under handle upper casing and handle
Shell, elastic component are arranged in handle lower shell, play reset role；Elastic component upper end directly or indirectly couples the handle of handle portion
Lower casing, elastic component upper end is constant relative to handle casing position, and elastic component lower end couples micromotor.Without external force on cleaning element
When effect, elastic component is in Pre strained state, the pretightning force F of elastic component3It acts on micromotor, makes micromotor and handle lower shell
Keep relatively fixed position；When cleaning element is applied external force F1When, micromotor movement tends to close to or far from elastic component
Upper end, in external force F1Act on deformation of the lower elastic member lower end generation relative to handle casing.Light source and photosensitive unit setting are online
Towards on that side of gear-box, wiring board is fixed on motor rack road plate, and light reflecting surface is arranged on gear-box；Otherwise also
So.
It is preferred that rotating shaft axis L of the position for the elastic force that elastic component generates to brush head mouthpiece3Distance be greater than it is outer
Power F1Rotating shaft axis L of the position to brush head mouthpiece30.35 times of distance.
It is preferred that the photosensitive pressure warning unit of the utility model further includes the recess portion being arranged on gear-box, this recess portion includes
Light reflecting surface, the recess side of gear-box, gear-box recess portion top surface.The recess side of the gear-box and gear-box it is recessed
Portion top surface constitutes light sensing shielded segment.
In another embodiment, closely photosensitive unit is arranged light source, and light source and/or photosensitive unit partly or entirely enter
The light sensing shielded segment, light source, photosensitive unit and light reflecting surface keep gap each other, which is greater than 0.1mm.
For mode of resonance electric cleaning care appliance, the driving component includes the driver fixed by handle casing
Bracket, drive shaft, the longitudinal axis L along drive shaft5Symmetrical two transducer drive arms pass through elastic component fixing piece point
It is not fixed on the elastic component of the upper end in close cleaning element direction on two transducer drive arms, is arranged in two transducer drives
The arm permanent magnet contrary far from two internal magnetic field lines below cleaning element, is arranged in the driving between two permanent magnets
Coil.Drive shaft, transducer drive arm, permanent magnet are movable member, and the line in stationary parts is arranged in light source and photosensitive unit
On the plate of road, light reflecting surface is arranged on the transducer drive arm in movable member, and the light of light source transmitting is through light reflecting surface
It is reflected into photosensitive unit.
It is preferred that the elastic component is sheet shape piece, elastic component is along drive shaft longitudinal axis L5Symmetrical, elastic component is along bullet
Property part is directed toward the length in corresponding transducer drive arm direction from elastic component fixing piece and elastic component along elastic component is parallel to drive
Moving axis longitudinal axis L5The width in direction is greater than 5 times of thickness or more of elastic component.
It is further preferred that the elastic component is perpendicular to drive shaft longitudinal axis L5And perpendicular to elastic component length side
To elastic component stiffness factor much smaller than elastic component along drive shaft longitudinal axis L5The stiffness factor in direction, and elastic component is hanging down
Directly in drive shaft longitudinal axis L5And perpendicular to elastic component length direction elastic component stiffness factor much smaller than elastic component along
Elastic component stiffness factor on cleaning element length direction, it is described much smaller than for less than 10 times or more.
In the another embodiment of the utility model, cleaning-nursing utensil is driving type comprising handle casing, driving group
Part, the cleaning assemblies including cleaning element.The driving component includes micromotor, gear-box, drive shaft, and driving assembly can be with
Integrally around the rotating shaft axis L of brush head mouthpiece3Rotation；Handle casing includes handle upper casing and handle lower shell, and elastic component is set
It sets in handle lower shell, plays reset role；Elastic component upper end directly or indirectly couples the handle lower shell of handle portion, elastic component
Upper end is constant relative to handle casing position, and elastic component lower end couples micromotor.When on cleaning element without external force, elasticity
Part is in Pre strained state, the pretightning force F of elastic component3It acts on micromotor, micromotor and handle lower shell is made to keep relatively solid
Fixed position；When cleaning element is applied external force F1When, micromotor movement tends to close to or far from elastic component upper end, in external force
F1Act on deformation of the lower elastic member lower end generation relative to handle casing.Light source is disposed relative to the static route of handle lower shell
Plate or in external force F1With elastic component elastic force F2Under collective effect on the movable member mobile relative to handle lower shell, photosensitive unit
It is disposed relative to be issued on the mobile movable member of handle lower shell or on the wiring board static relative to handle lower shell by light source
Light shine directly on photosensitive unit.
Relative to existing pressure warning unit, the pressure warning unit accuracy of the utility model can be improved 20 times.
Detailed description of the invention
The hereafter typical example of the electric cleaning care appliance using electric toothbrush as the utility model, and more in conjunction with attached drawing
Describe the exemplary embodiment of the utility model in detail.
Fig. 1 is the front view of electric cleaning care implement；
Fig. 2 is the internal component front view of handle；
Fig. 3 is the side sectional view of electric cleaning care implement when cleaning element is not affected by external force；
Fig. 4 be cleaning element by external force when electric cleaning care implement side sectional view；
Fig. 5 is the part schematic diagram at the intermediate position of handle inner when cleaning element is not affected by external force；
Fig. 6 is handle upper casing schematic diagram；
Fig. 7 is the schematic diagram of gear-box and light source and photosensitive unit；
Fig. 8 is the schematic diagram of gear-box and motor rack；
Fig. 9 is the schematic diagram at another visual angle shown in fig. 5；
Figure 10 be cleaning element by external force when, the part schematic diagram at the intermediate position of handle inner；
Figure 11 is the detection circuit of photosensitive unit voltage value；
Figure 12 a, Figure 12 b, Figure 12 c are respectively the different configuration of schematic diagram of photosensitive unit and light source in light sensing part；
Figure 13 is the decomposition diagram of the second class electric cleaning care implement；
Figure 14, Figure 15 are the part combination diagram in the second class cleaning-nursing apparatus.
The description of symbols of main component
1 is handle
3,203 be respectively the cleaning assemblies being arranged on the first and second class cleaning-nursing apparatus
101 be handle upper casing
102 be handle lower shell
104 be the recess portion on handle upper casing
110 be brush head mouthpiece
111 be the interface for brush head mouthpiece
112 be the rotary shaft of brush head mouthpiece
120 be gear-box fastener
130 is are gear-box for the bottom cover 140 of brush head mouthpiece
141 be light reflecting surface
142 be the bottom face of gear-box
143 be the recess side of gear-box
144 be the recess portion top surface of gear-box
150,223,224 be respectively the elastic component being arranged on the first and second class cleaning-nursing apparatus
151 be elastic component upper end
152 be elastic component lower end
160 be motor rack
161 be micromotor
162 be the front end face of motor rack
163 be motor fastener
170 be wiring board
171,571 be photosensitive unit
172,572 be light source
173,175,576 light issued for light source
174,176 be reflection light
141,541,241 be respectively the light reflecting surface being arranged on the first and second class cleaning-nursing apparatus
177 be the light-receiving surface of photosensitive unit
577 be the initial light-receiving surface of photosensitive unit
578 be the process light-receiving surface of photosensitive unit
180 be battery
190,220 be respectively the drive shaft of the first and second class cleaning-nursing apparatus
201 be handle casing
221,222 be driver rack
225,226 be permanent magnet
227 be driving coil
230,330 be respectively the cleaning element being arranged on the first and second class cleaning-nursing apparatus
235,236 be transducer drive arm
237 be elastic component fixing piece
228,229 be driving coil bracket
310 be cleaning assemblies shell
320 be cleaning assemblies connector
331 be cleaning element carrier
L1, L5The respectively drive shaft longitudinal axis of the first and second class cleaning-nursing apparatus
L2For the rotation axis of cleaning element carrier, it is approximately parallel to the axis of cleaning element along its length
L3For the rotating shaft axis of brush head mouthpiece
L4For along the axis of cleaning element length direction
F1To be applied on cleaning element, direction be approximately along or be parallel to the axis of cleaning element along its length
Pressure or partial pressure, be referred to as external force in this specification
F2The elastic component elastic force generated for elastic component
F3The elastic component pretightning force generated for elastic component
R is photo resistance
R0For initial photosensitive resistance value
R1For the photosensitive resistance value of process
R2、R4For fixed resistance
α 1 is reflecting surface initial incidence angle of the light in light reflecting surface
β 1 is reflecting surface initial reflectance angle of the light in light reflecting surface
α 2 is reflecting surface process incidence angle of the light in light reflecting surface
β 2 is reflecting surface process angle of reflection of the light in light reflecting surface
α 3 is initial light-receiving surface incidence angle of the light on the initial light-receiving surface of photosensitive unit
α 4 is process light-receiving surface incidence angle of the light on photosensitive unit process light-receiving surface
LED is light emitting diode
I/O1 is the input/output detection mouth I/O of MCU
Specific embodiment
Although being explained by taking electric toothbrush as an example below, the utility model is without being limited thereto.The utility model
Electric shaver, electronic razor, Electrical Shower etc. are applicable to for personal electric cleaning care appliance.
For the sake of clarity, in the present specification use statement relative space position word such as "upper", "lower", " on
Portion ", " lower part " etc. come be briefly described elements or features as shown in the figure and another element (one or more) or feature (one or
It is multiple) correlation, wherein "upper", "lower", " top ", " lower part " are the faces for along drive shaft longitudinal axis
It is defined as "upper", " top " along the upward direction of drive shaft longitudinal axis to corresponding views, edge is parallel to cleaning device axis
It is defined as "lower", " lower part " in downward direction.Element is described as " ... on " or when " being connected to " another element, can be
Located immediately at or be connected on another element, or there may be the elements occupy therebetween；And element is described as " directly
... on " or when " being directly coupled to " another element, then exist therebetween without element.
In addition, vocabulary "and/or" used herein includes appointing in one or more listed associated vocabulary
One and all combinations.
Fig. 1-Figure 10 shows the first embodiment of the utility model, and the electric cleaning that this is suitable for the first kind is nursed
Apparatus, i.e. driving type electric cleaning-nursing apparatus.As Figure 1-Figure 4, the electric cleaning care appliance (such as toothbrush) includes
Cleaning assemblies 3 and handle 1.Handle 1 includes the handle casing being made of handle upper casing 101 and handle lower shell 102, in handle casing
Equipped with to the various pieces of cleaning-nursing apparatus provide electric power power unit 180, to control cleaning-nursing apparatus
The control section of various operating modes and cleaning-nursing apparatus, to start or close the trigger unit of cleaning-nursing apparatus operating
Point, driving assembly that the electric energy of input is converted to mechanical energy output, detection be applied to cleaning element (for example, in the present embodiment
In be electric toothbrush bristle) external force F on 3301Light sensing part and detection circuit.Cleaning assemblies 3 includes cleaning assemblies
Shell 310, cleaning assemblies connector 320, cleaning element carrier (for example, being in the present embodiment the brush of electric toothbrush) 331
And cleaning element 330.Cleaning assemblies 3 is removably coupled on handle 1, in the present embodiment, the cleaning group in cleaning assemblies 3
Drive shaft 190 in part connector 320 and handle 1 in a manner of relative rotation can not couple.Cleaning assemblies in cleaning assemblies 3
Brush head mouthpiece 110 in shell 310 and handle 1 in a manner of relative rotation can not couple.Cleaning assemblies 3 can be along drive shaft
Longitudinal axis L1It is mobile relative to drive shaft 190 and brush head mouthpiece 110, to realize that cleaning assemblies 3 is removably coupled to hand
On handle 1.The present embodiment merely illustrates a kind of mode that cleaning assemblies removably couples with handle, and certainly, the utility model is not
It is confined to the connecting mode.
- Fig. 5 referring to fig. 2, the driving assembly in the present embodiment include micromotor 161, gear-box 140, connect for brush head
The bottom cover 130 of mouthful part, brush head mouthpiece 110, drive shaft 190, the gear in gear-box 140 and link mechanism, gear-box
Fastener 120, motor fastener 163, brush head mouthpiece rotary shaft 112.Micromotor 161, the tooth in gear-box 140
Wheel and link mechanism, drive shaft 190 couple each other, and drive shaft 190 is realized under the drive of micromotor 161 around its driving
Axis longitudinal axis L1Reciprocating rotary, to drive rotation axis L of the cleaning element 330 around cleaning element carrier 3312Reciprocating rotary
Turn.Brush head mouthpiece 110, the bottom cover 130 for brush head mouthpiece, gear-box 140 are connected firmly by gear-box fastener 120, micro-
Type motor 161, gear-box 140 are connected firmly by motor fastener 163, the rotary shaft 112 and brush head mouthpiece 110 of brush head mouthpiece
Connection.By the combination of above structure, driving assembly can be integrally around the rotating shaft axis L of brush head mouthpiece3Rotation.
According to the utility model, as shown in fig. 6, being set in handle upper casing 101 there are two the recess portion 104 on handle upper casing, use
To accommodate the rotary shaft 112 of brush head mouthpiece, the recess portion 104 on handle upper casing constrains the rotary shaft 112 of brush head mouthpiece along drive
Moving axis longitudinal axis L1Towards the movement in cleaning element direction.Motor rack 160 is fixed in handle lower shell 102, motor rack 160 exists
Along drive shaft longitudinal axis L1There are a concave-shaped openings to accommodate micromotor 161 towards the front end in cleaning element direction, it is described
Concave opening can be without the micromotor 161 interferingly accommodated under various positions state.As shown in Figs. 7-8, motor rack 160 wraps
It includes along drive shaft longitudinal axis L1Towards the front end face 162 of the motor rack in cleaning element direction, gear-box 140 includes along drive shaft
Longitudinal axis L1The bottom face 142 of gear-box far from cleaning element direction.- Fig. 8 referring to fig. 2, motor rack 160 are fixed on hand
In handle lower casing 102, the front end face 162 of motor rack and the bottom face 142 of gear-box are contacted, and motor rack 160 is along drive shaft longitudinal axis
Line L1Direction supports gear-box 140.Motor rack 160 constrains gear-box 140, the bottom cover 130 for brush head mouthpiece, brush head interface
Part 110, brush head mouthpiece rotary shaft 112 etc. along drive shaft longitudinal axis L1Movement far from cleaning element, on handle upper casing
Recess portion 104 constrain brush head mouthpiece rotary shaft 112 along drive shaft longitudinal axis L1The movement of close cleaning element, and brush head
The rotary shaft 112 of mouthpiece, brush head mouthpiece 110, bottom cover 130, gear-box 140 and micromotor for brush head mouthpiece
161 connect firmly, and there are gaps between the rotary shaft 112 of the recess portion 104 on handle upper casing and brush head mouthpiece so as to relative rotation.This
In embodiment, the front end face 162 of motor rack and the bottom face 142 of gear-box are the rotating shaft axis L with brush head mouthpiece3As
The partial cylindrical surface of axis, thus driving assembly by handle upper casing recess portion 104 and motor rack 160 constrain, driving assembly is logical
The cooperation for crossing the front end face 162 of motor rack and the bottom face 142 of gear-box can be around the rotating shaft axis L of brush head mouthpiece3It is past
Multiple rotation, and driving assembly is made by limitation along drive shaft longitudinal axis L1Movement, cleaning assemblies 3 is connected to driving assembly,
Cleaning assemblies 3 can also be around the rotating shaft axis L of brush head mouthpiece3Reciprocating rotary.
Referring to Fig. 3-Fig. 5, handle 1 is specifically disposed with the elastic component 150 played reset role, bullet in handle lower shell 102
Property part 150 can be any structure spring, in the present embodiment, elastic component 150 be column type spring.Elastic component 150 passes through electricity
Rack 160,160 accommodating portion elastic component of motor rack.The elastic component upper end 151 of elastic component 150 couples handle lower shell 102, elasticity
The elastic component upper end 151 of part 150 is constant relative to handle casing position.The elastic component lower end 152 of elastic component 150 couples micro electric
Machine 161, when cleaning element is applied external force F1When, the movement of micromotor 161 tends to close to elastic component upper end 151, elastic component 150
Elastic component lower end 152 in external force F1Under the action of generate deformation relative to handle casing, elastic component 150 is in confined state
Or compression aggravation state.When on cleaning element 330 without external force, elastic component 150 is in pre-compressed state, and elastic component 150 is pre-
Clamp force F3It acts on micromotor 161, micromotor 161 and handle lower shell 102 is made to keep relatively fixed position.This implementation
In example, when setting cleaning element 330 not by external force, elastic component 150 is in pre-compressed state, at micromotor 161
In initial position, driving assembly and cleaning assemblies 3 are also at initial position.Elastic component 150 resists external force F1Effect, outside handle
Shell or the static component of opposite handle shell support and fix one end of elastic component 150.Outside due to handle casing or opposite handle
The static component of shell is plastic part, and mechanical strength is less than normal and can not bear biggish power, otherwise handle casing or opposite hand
There may be additional harmful deformation for the static component of handle shell；Additionally, due to the narrow of space, elastic component is small size bullet
Property part, therefore elastic component cannot be born more energetically, and otherwise elastic component is easily surrendered and fatigue.External force F1Position is to brush head mouthpiece
Rotating shaft axis L3Distance be known as external force F1The arm of force, the resilient force point that elastic component 150 generates is to brush head mouthpiece
Rotating shaft axis L3Distance be known as the elastic component arm of force.By to external force F1Size and elastic component position influence the elastic component service life with
And a large number of experiments of handle casing deformation confirms, the elastic component arm of force is greater than external force F10.35 times of the arm of force can lack to avoid above-mentioned
Point.In the utility model, preferably the elastic component arm of force is greater than external force F10.35 times of the arm of force.The Pre strained state of above-mentioned elastic component is pre-
Compressive state, elastic component is in external force F1Under the action of generate deformation relative to handle casing, elastic component 150 is in confined state
Or compression aggravation state.Obviously, elastic component also can be set into around drive shaft longitudinal axis L1Rotate 180 degree, in this position, bullet
Property part Pre strained state be pretensioned state, elastic component is in external force F1Under the action of generate deformation relative to handle casing, bullet
Property part 150 in be stretched state or stretch aggravation state.
Light sensing part includes light source 172 and photosensitive unit 171, and the light that light source 172 issues is at least partly through reflecting
After be irradiated on photosensitive unit 171.Light source 172 can be actively luminous electronic device, such as light emitting diode (LED), light
Quick unit 171 can be the electronic device of resistance value or electric conductivity significant changes after light irradiation, such as photo resistance or photosensitive
Diode or phototriode etc..As shown in Fig. 9-Figure 10, light source 172 and photosensitive unit 171 arrange assist side 170 towards tooth
That side of roller box 140, wiring board 170 are fixed on motor rack 160.Gear-box 140 is equipped with light reflecting surface 141.Light source 172
The light of sending is at least partly reflected on photosensitive unit 171 via light reflecting surface 141.In the present embodiment, photosensitive unit
171 be photo resistance R.In this specification, the light that light source 172 issues is reflected into photosensitive unit through light reflecting surface 141
Area on light-receiving surface 177 is known as the light-receiving area of photosensitive unit, and the light that light source 172 is issued is anti-through light reflecting surface 141
The light beam being mapped on the light-receiving surface 177 of photosensitive unit is known as light-receiving surface light beam, the light spoke of the unit time of the light-receiving surface light beam
The light radiant flux that energy is light-receiving surface is penetrated, according to photo resistance electrical characteristic it is found that the light radiation of the light-receiving surface on photo resistance R
Flux is bigger, and the resistance value of photo resistance R is smaller.The light radiant flux of light-receiving surface on photo resistance R is smaller, photo resistance R
Resistance value it is bigger.If the light on the light-receiving surface 177 of photosensitive unit all is from light source 172, the resistance on photo resistance R
Variation is only influenced by the light radiant flux of the light-receiving surface from light source 172 received on photo resistance R, therefore, in order to the greatest extent
Rotating shaft axis L of the photo resistance R resistance value with gear-box 140 around brush head mouthpiece may be improved3Rotation angle change
Sensitivity, i.e., as far as possible improve photo resistance R on resistance value with external force F1The sensitivity of variation, in light sensing part week in this example
It encloses and is provided with shielded segment.As shown in fig. 7, closely photosensitive unit 171 is arranged light source 172, it is recessed that gear-box 140 is provided with gear-box
Portion, the recess portion are made of the recess portion top surface 144 of light reflecting surface 141, the recess side of gear-box 143, gear-box.Gear-box
The recess portion top surface 144 of recess side 143 and gear-box constitutes light sensing shielded segment.The substantially face light source of light reflecting surface 141
172 and photosensitive unit 171, the recess side 143 of gear-box and the recess portion top surface 144 of gear-box are distributed in light source 172 and photosensitive
Three sides of unit 171.Light reflecting surface 141, the recess side of gear-box 143, the recess portion top surface 144 of gear-box and light source 172
And there are movement clearances between photosensitive unit 171.Preferably, light source 172 and/or photosensitive unit 171 partly or entirely enter light
Shielded segment is sensed, light source 172, photosensitive unit 171 and light reflecting surface 141 keep gap each other, and the gap can be greater than
0.1mm。
Fig. 3 and Fig. 9 is shown when being in initial position without external force, driving assembly on cleaning element 330, light source 172, light
The state of quick unit 171 and gear-box recess portion.Fig. 4 and Figure 10, which is shown, is applied with external force F on cleaning element 3301And micro electric
Machine 161 is by elastic component elastic force F2When effect, the state of light source 172, photosensitive unit 171 and gear-box recess portion.Comprehensive front
The narration of internal structure and connecting mode to handle internal structure and cleaning assemblies 3, without outer masterpiece on cleaning element 330
Used time, elastic component pretightning force F3Driving assembly is set to be in initial position, Fig. 9 schematically shows the light of the sending of light source 172
173,175 reflection light 174,176 is reflected to form through light reflecting surface 141 and is irradiated on the light-receiving surface 177 of photosensitive unit
Situation.As previously mentioned, in the utility model, light source 172 and photosensitive unit 171 can be it is any can stabilized illumination component and
Any photosensitive component, for example, photosensitive unit 171 can be photo resistance R, light source 172 can be LED.Assuming that light
Quick resistance 171 its corresponding resistance value after receiving the light from light source 172 is R0, R0Referred to as driving assembly is in just
The corresponding initial photosensitive resistance value of photo resistance 171 when beginning position.The light 173 issued relative to light source 172 is reflected through light
Face 141 is reflected into for the optical path of photosensitive unit 171, incidence of the light 173 that light source 172 issues in light reflecting surface 141
Angle and angle of reflection are respectively α 1 and β 1, and α 1 is referred to as reflecting surface initial incidence angle, and β 1 is referred to as reflecting surface initial reflectance angle, light source
At the beginning of 172 light-receiving areas being reflected on the light-receiving surface 177 of photosensitive unit through light reflecting surface 141 issued are referred to as photosensitive unit
Beginning light-receiving area, the light beam being reflected on the light-receiving surface 177 of photosensitive unit through light reflecting surface 141 that light source 172 issues are claimed
Optical radiation energy for initial light-receiving surface light beam, the unit time of the initial light-receiving surface light beam is referred to as the light of initial light-receiving surface
Radiation flux.
Comprehensive front is to the internal structure of handle internal structure and cleaning assemblies 3 and the narration of connecting mode and referring to figure
4, apply external force F on cleaning element 3301When, the rotating shaft axis L of driving assembly and cleaning assemblies 3 around brush head mouthpiece3It is suitable
Hour hands rotation, elastic component 150 are further compressed, and elastic component 150 generates the elasticity rotated clockwise to resist driving assembly
Part elastic force F2, as elastic component elastic force F2The rotating shaft axis L of opposite brush head mouthpiece3The torque and external force F of formation1Relatively
The rotating shaft axis L of brush head mouthpiece3When the torque of formation is equal in magnitude, contrary, driving assembly and cleaning assemblies 3 are in
Equilbrium position, the equilbrium position are referred to as driving assembly course location.As shown in Figure 10, compare in external force F1And elastic component bullet
Property power F2Collective effect under situation and cleaning element 330 on without 150 generation elastic component pretightning force F of external force and elastic component3
Situation, for the light reflecting surface 141 of the latter closer to photo resistance R, the light 173,175 emitted by light source 171 is anti-through light
Penetrating the reflection light that face 141 is reflected on photosensitive unit 172 is 174,176.If setting photo resistance R receiving from light source
Its corresponding resistance value is R after 172 light1, R1When as driving assembly is in driving assembly course location, R pairs of photo resistance
The photosensitive resistance value of the process answered.As shown in Figure 10, the light 173 issued relative to light source 172 is reflected into through light reflecting surface 141
For the optical path of photosensitive unit 171, the light 173 that light source 172 the issues incidence angle and angle of reflection in light reflecting surface 141 point
Not Wei α 2 and β 2, α 2 be reflecting surface process incidence angle, β 2 is reflecting surface process angle of reflection, and the light that light source 172 issues is through light
Reflecting surface 141 is reflected into the process light-receiving area that the light-receiving area on the light-receiving surface 177 of photosensitive unit is photosensitive unit, light source
It is process light-receiving surface light that 172 light issued, which are reflected into the light beam on the light-receiving surface 177 of photosensitive unit through light reflecting surface 141,
Beam, the optical radiation energy of the unit time of the process light-receiving surface light beam are the light radiant flux of process light-receiving surface.According to photosensitive electricity
The light radiant flux of the characteristic of resistance, the light-receiving surface on photo resistance R is bigger, then the resistance value of photo resistance R is smaller.Figure 10 is shown
Be the case where driving assembly is in course location.Fig. 9 shows the case where driving assembly is in initial position.Comparison diagram 9
And Figure 10, i.e. comparison driving assembly are in initial position and course location, reflecting surface initial incidence angle α 1 and reflecting surface are initially anti-
Firing angle β 1 is respectively greater than reflecting surface process incident angle α 2 and reflecting surface process angle of reflection β 2, thus the initial light-receiving surface of photosensitive unit
Product is greater than the process light-receiving area of photosensitive unit.Light source is stabilized illumination unit in this example, and the voltage on light source is burning voltage,
The electric current for flowing through light source remains unchanged, and the light that light source issues has stable light radiant flux, the initial light of photosensitive unit
Area is big, and the light radiation that photosensitive unit receiving is issued from light source is big, and the process light-receiving area of photosensitive unit is small, photosensitive unit
It is small to receive the light radiation issued from light source, correspondingly initial photosensitive resistance value R0Resistance value R photosensitive less than process1。
Figure 11 shows a kind of detection circuit for detecting detected voltage change caused by photosensitive resistance change.Setting
The external force F born on cleaning element 3301Upper limit value, if, external force F1More than or equal to the upper limit value, then electronic nursing is Clean-
Tool can be known as force threshold of alarming with the excessive information of modes output pressure such as sounding and/or luminous and/or vibration, the upper limit value.
Referring to Figure 11, VDDFor the voltage source that voltage value is stable, starting from scratch on cleaning element 330 by 20 gram forces is that ladder is unidirectionally incremented by
Ground applies external force F1, until preset alarm force threshold, due to VDDFor burning voltage, R3For fixed resistance, the electricity of photo resistance R
Resistance value is with external force F1Variation and change, therefore, I/O1 can collect different force F1Relevant voltage on lower photo resistance R
Value, by different force F1And the voltage value on corresponding photo resistance R is stored into MCU.MCU can prestore different photo resistance
Voltage value and different force F on R1Corresponding relationship.User applies different external force to cleaning element 330 using electric toothbrush
F1When, I/O1 detects the relevant voltage value on photo resistance R, and MCU can be calculated by the pressure and voltage value table that prestore
The external force F that active user applies1, so that MCU can show the external force F that user applies1, can also be in user to cleaning element
The 330 external force F applied1When meeting or exceeding alarm force threshold, alarm portion is in a manner of sound and/or light and/or vibration etc.
Prompt pressure excessive.
The utility model creatively the light of light source via be arranged in can be mobile relative to handle casing driving group
Light is reflected on photosensitive unit 171 by the reflecting surface on part, the external force F of application1With elastic component elastic force F2Collective effect make
Driving assembly generates the movement relative to handle upper casing 101, handle lower shell 102, and the movement of driving assembly issues light source 172
Incidence angle and angle of reflection of the light in light reflecting surface 141 change, so that enabled receive the light from light source 172
The light-receiving area of photosensitive unit change, cause the variation of the corresponding electric property of photosensitive unit 171 specifically to cause
Resistance value on photo resistance R changes, and then can detecte the voltage change on photo resistance R in the I/O1 of MCU mouth,
To realize to external force F1Identification, and can be in external force F1When being more than or reaching alarm force threshold, alarm portion is made a sound
And/or bright and/or vibration reminding information.
In first embodiment, on light source 172 and the fixed assist side 170 of photosensitive unit 171, the light of the sending of light source 172
Light reflecting surface 141 through gear-box recess portion is reflected into photosensitive unit 171, and light reflecting surface 141 is in external force F1With elastic component bullet
Property power F2Collective effect under can be around the rotating shaft axis L of brush head mouthpiece3Reciprocating rotary.
Figure 12 a- Figure 12 b has shown second embodiment of the utility model suitable for driving type cleaning-nursing apparatus out.Herein
Define handle 1 in relative to the fixed component of handle lower shell 102 be stationary parts；It defines in handle 1 relative under handle
The moveable component of shell 102 is movable member.As figure 12 a shows, it is static to be disposed relative to handle lower shell 102 for light source 572
On wiring board 170, the setting of photosensitive unit 571 is can be in external force F1With elastic component elastic force F2Relative under handle under collective effect
On the mobile movable member of shell 102.In Figure 12 b, the static wiring board of opposite handle lower casing 102 is arranged in photosensitive unit 571
On 170, the setting of light source 572 is can be in external force F1With elastomeric resilient power F2Relative to the movement of handle lower shell 102 under collective effect
On movable member, shone directly on photosensitive unit 571 by the light that light source 572 issues.Figure 12 a and Figure 12 b working condition class
Seemingly, it is analyzed by taking Figure 12 a as an example below.
As figure 12 a shows, light source 572 is disposed relative on the static wiring board 170 of handle lower shell 102, photosensitive unit
571 settings are can be in external force F1With elastic component elastic force F2The movable member mobile relative to handle lower shell 102 under collective effect
On.577 be the initial light-receiving surface without photosensitive unit when receiving light on external force, photosensitive unit 571 on cleaning element 330,
578 be photosensitive unit 571 in external force F1With elastic component elastic force F2Around the rotating shaft axis L of brush head mouthpiece under collective effect3Rotation
The process light-receiving surface of photosensitive unit after turning.The initial light-receiving surface 577 of photosensitive unit is lower than light source 572, the transmitting light of light source 572
Line 576 shines directly on the initial light-receiving surface 577 of photosensitive unit, and the process light-receiving surface 578 of photosensitive unit is closer to light source
572, the light 576 that light source 572 issues is unable in direct projection to the process light-receiving surface 578 of photosensitive unit.The light that light source 572 issues
576 incidence angle on the initial light-receiving surface 577 of photosensitive unit is initial light-receiving surface incident angle α 3, the light that light source 572 issues
576 incidence angle on the process light-receiving surface 578 of photosensitive unit is process light-receiving surface incident angle α 4, process light-receiving surface incident angle α 4
Greater than initial light-receiving surface incident angle α 3, it is clear that the light 576 that the movement of movable member issues light source 572 is in photosensitive unit
Incidence angle on light-receiving surface is changed, thus the light-receiving surface of the enabled photosensitive unit for receiving the light 576 from light source 572
Product changes.Specifically, the light-receiving area on the initial light-receiving surface 577 of photosensitive unit is greater than the process light-receiving surface of photosensitive unit
Light-receiving area on 578.In the utility model, light source 572 is stabilized light source, and the light issued is logical with stable light radiation
Amount, so that the light radiation received on the initial light-receiving surface 577 of relatively large photosensitive unit is greater than relatively small photosensitive unit
Process light-receiving surface 578 on the light radiation that receives, therefore, photosensitive electricity corresponding with the process light-receiving surface 578 of photosensitive unit
The resistance value of resistance is much larger than the resistance value of photo resistance corresponding with the initial light-receiving surface 577 of photosensitive unit, photosensitive so as to pass through
Ohmically voltage value variation reflection external force F1Variation.
Obviously, Figure 12 a is an example, can also there is many transformation, for example, the process light-receiving surface 578 of photosensitive unit is right
Than the initial light-receiving surface in photosensitive unit far from light source 572 etc..
Figure 12 C shows the 3rd embodiment of the utility model, this is also applied for the electric cleaning nursing of the first kind
Apparatus, i.e. driving type electric cleaning-nursing apparatus.Unlike Fig. 1-10 illustrated embodiment, light source 572, photosensitive unit 571
It is arranged on moveable actuator assembly, light reflecting surface 241 is disposed relative to the stationary wiring board of handle casing
On.Light source 572, photosensitive unit 571 can be in external force F1With elastic component elastic force F2It is moved under collective effect relative to handle lower shell 102
Dynamic, the light that light source 572 emits is reflected into light through the wiring board or other stationary parts stationary relative to handle lower shell 102
Quick unit 571.
The analysis of Figure 12 C working condition is similar to first embodiment, and details are not described herein.
As shown in Fig. 1-10 and Figure 12 c, light source 172,572 and photosensitive unit 171,571 are in ipsilateral and are arranged simultaneously
On movable member or stationary parts, photosensitive unit 171,571 is equipped with the light-receiving surface 177 (Fig. 9) or 577 (figures of photosensitive unit
12c), it is set on the stationary parts (such as wiring board) or movable member of that side of light source 172,572 and photosensitive unit 171,571
It is equipped with light reflecting surface 141,541, light reflecting surface 141,541 can be reflected into the light that light source 172,572 emits photosensitive
On unit 171,571, movable member is in external force F1And elastic component elastic force F2It can be relative to handle lower shell under collective effect
102 is mobile.Creatively movable member or stationary part is arranged in simultaneously and ipsilaterally in photosensitive unit and light source by the utility model
On part, by the setting of light reflecting surface 141,541 in the stationary part in face of light source 172,572 and that side of photosensitive unit 171,571
On part (such as wiring board) or movable member, external force F1When starting from scratch unidirectional incremental, the light-receiving surface of light source and/or photosensitive unit is arrived
The distance of light reflecting surface unidirectionally changes, so as to cause the voltage value variation in photo resistance.
As illustrated by Figure 12 a-12b (second embodiment), light source 572 and photosensitive unit 571 are respectively distributed to movably
On component or stationary parts, the light that light source 572 issues is shone directly on the light-receiving surface of photosensitive unit.In the present embodiment,
The light-receiving surface of photosensitive unit when by cleaning element 330 without external force on movable member be known as photosensitive unit it is initial by
Smooth surface；It will be in external force F1And elastic component elastic force F2Collective effect under, the light-receiving surface of the photosensitive unit on movable member
The referred to as process light-receiving surface of photosensitive unit.According to the utility model, the light-receiving surface of photosensitive unit can be arranged in movable member
On, light source 572 is arranged on stationary parts, in external force F1Start from scratch unidirectional increase when, the process light-receiving surface of photosensitive unit
578 originate unidirectional approach light source from the initial light-receiving surface 577 of photosensitive unit or even cross light source, or from photosensitive unit it is initial by
Smooth surface 577 originates unidirectional far from light source；Or light source 572 can be arranged on movable member, by the light-receiving surface of photosensitive unit
It is arranged on stationary parts, the light direct irradiation that light source issues is on the light-receiving surface of photosensitive unit, in external force F1Start from scratch
When unidirectional increase, light source 572 unidirectionally tends to the light-receiving surface of photosensitive unit or even crosses the light-receiving surface or unidirectional separate of photosensitive unit
The light-receiving surface of photosensitive unit.
In the present invention, due to by light sensing partial circuit current path and power device (such as miniature DC motor)
Current path separate, only external force F1Movable member can just generated mobile relative to handle casing, can effectively avoid power
Interference of the device to light sensing part electric signal in detection circuit, and due to perpendicular to external force F1Power (such as the electric tooth in direction
The frictional force of bristle and dental surface in brush) movable member movement cannot be made, thus the present apparatus can accurately identify external force F1, improve
Identification to pressure, and then improve the accuracy of pressure detecting and alarm.
In existing mode of resonance electric cleaning care appliance, power unit includes driving coil (motor stator part)
And the spring assembly of driven line circle driving, magnet is disposed in spring assembly.Magnetic line of force direction and driving inside magnet
The magnetic line of force direction that coil generates is substantially parallel, magnet face driving coil, to realize that electromagnetic energy is converted into machine in higher efficiency
Tool energy.Magnet responds the electromagnetic force driving spring component movement that driving coil alternating current generates.In order to realize pressure alarm,
It is applied under the action of the external force on cleaning element, it is often desired to which magnet has foot on the direction perpendicular to magnet internal magnetic field lines
Enough big displacements, but driving coil itself is not mobile with the external force, therefore in the external force for being applied to cleaning element
Under, the angle in the magnetic line of force direction that magnetic line of force direction and driving coil inside magnet generate will increase with external force and be become larger, from
And it may be decreased the efficiency that electromagnetic energy is mechanical energy, the additional electromagnetism harmonic wave of formation and additional harmonic noise and handle
Vibration on shell.
In the utility model, (this is suitable for the electric cleaning of Second Type to the fourth embodiment as shown in Figure 13-Figure 15
Care implement is suitable for the mode of resonance electric cleaning care implement) shown in, cleaning assemblies 203 removably couples driving
Axis 220, cleaning assemblies 203 are non-rotatable relative to drive shaft 220.Cleaning element 230 is distributed in the cleaning assemblies 203, clearly
The axis of clean element 230 along its length is L4, in drive shaft 220 far from being disposed with ball bearing on 230 direction of cleaning element
290, ball bearing 290 is fixed by driver rack 221,222, and driver rack 221,222 is fixed by handle casing 201, drives
Moving axis 220 is along drive shaft longitudinal axis L5It is connected firmly on direction far from ball bearing 290 with transducer drive arm 235,236,
Two transducer drive arms are along drive shaft longitudinal axis L5It is symmetrical, close to cleaning element 230 on two transducer drive arms
The upper end in direction connects firmly elastic component 223,224 respectively, and the other end of elastic component 223,224 is fixed on elastic component fixing piece 237, bullet
Property part 223,224 is along drive shaft longitudinal axis L5Symmetrical, elastic component fixing piece 237 is fastened by driver rack 221,222,
Driver rack 221,222 is fastened by handle casing 201.Elastic component 223,224 be sheet shape piece, along elastic component 223,224 from
The direction that elastic component fixing piece 237 is directed toward corresponding transducer drive arm 235,236 is elastic component length direction, along elastic component
223,224 it is parallel to drive shaft longitudinal axis L5Direction be elastic component width direction, another direction of elastic component 223,224
For elastic component thickness direction.Elastic component 223,224 length directions and elastic component thickness direction are perpendicular to drive shaft longitudinal axis L5。
It is contrary that two internal magnetic field lines are respectively arranged two 235,236 lower sections far from cleaning element 230 of transducer drive arm
Permanent magnet 225,226, be disposed with driving coil 227, the inner magnet of permanent magnet 225,226 between two permanent magnets 225,226
The internal magnetic field lines direction that line of force direction is generated approximately perpendicular to driving coil 227, the internal magnetic field lines that driving coil 227 generates
Perpendicular to drive shaft longitudinal axis L5, the internal magnetic field lines of permanent magnet 225,226 are perpendicular to drive shaft longitudinal axis L 5, permanent magnet
225,226 internal magnetic field lines direction is approximately parallel to elastic component length direction.227 driven line coil support 228 of driving coil,
229 fastenings, driving coil bracket 228,229 are fastened by handle casing 201.When driving coil 227 passes through alternating current, permanent magnetism
Body 225,226 is driven drive shaft 220 around drive shaft longitudinal axis L by alternating electromagnetic force5Reciprocating rotary, 220 band of drive shaft
Cleaning assemblies 203 is moved around drive shaft longitudinal axis L5Reciprocating rotary, the alternating electromagnetic force that the permanent magnet 225,226 is subject to are approximate
It is parallel to the external force along cleaning element length-wise axis L4 being applied on cleaning element 230.In conjunction with above-mentioned suitable bullet
Property part structure, wherein the length and width of elastic component 223,224 is both greater than 5 times or more of the elastic component thickness, elastic component
223,224 perpendicular to drive shaft longitudinal axis L5And it is much smaller than perpendicular to the elastic component stiffness factor of elastic component length direction
Elastic component is along drive shaft longitudinal axis L5The stiffness factor in direction, elastic component 223,224 is perpendicular to drive shaft longitudinal axis L5
And elastic component is much smaller than along the stiffness of elastic component length direction perpendicular to the elastic component stiffness factor of elastic component length direction
Coefficient.Permanent magnet 225,226 by the electromagnetic force of the alternation from driving coil be approximately parallel to elastic component thickness direction and
It is approximately parallel to the external force along cleaning element length-wise axis L4 being applied on cleaning element 230, the elastic component 223,
224 along or parallel to cleaning element length-wise axis L4Elastic component stiffness factor on direction is much smaller than the elastic component
Along the length-wise axis L perpendicular to cleaning element 2304Elastic component stiffness factor on direction, it is described much smaller than for less than
10 times or more.In the present embodiment, drive shaft 220, transducer drive arm 235,236 permanent magnets 225,226 form movable member.?
Along the length-wise axis L of cleaning element 2304External force and elastic component elastic force collective effect under, the movable member phase
It is mobile for handle casing 201, specifically, movable member using ball-bearing center as fulcrum around external force to rolling bearing center
The torque direction formed for fulcrum is mobile.In the present embodiment, elastic component 223,224 is dexterously utilized along drive shaft longitudinal axis
L5Symmetrical structure；Elastic component 223,224 is perpendicular to drive shaft longitudinal axis L5And perpendicular to elastic component length direction
Elastic component stiffness factor much smaller than elastic component along drive shaft longitudinal axis L5The characteristic of the stiffness factor in direction, and elasticity
Part 223,224 is along or parallel to cleaning element length-wise axis L4Elastic component stiffness factor on direction is much smaller than elasticity
Part is along perpendicular to cleaning element length-wise axis L4The characteristic of elastic component stiffness factor on direction；Permanent magnet 225,226
The alternating electromagnetic force being subject to be approximately parallel to be applied on cleaning element along cleaning element length-wise axis L4External force
Characteristic；Elastic component 223,224 can and be the reset spring of movable member, without increasing the spies such as additional reset spring
Point is effectively saved material cost and cost of labor and realizes electric toothbrush miniaturization.Energy converter transmission arm in movable member
235, light reflecting surface 241 is disposed on 236, light source 272 and photosensitive unit 271 are disposed on the wiring board in stationary parts,
Source emissioning light line is reflected into photosensitive unit 271 through light reflecting surface 241.Along cleaning element length-wise axis L4External force
Under the collective effect of elastic component elastic force, the light source that is arranged on stationary parts, photosensitive unit and it is arranged on movable member
Light reflecting surface relationship, especially three is on cleaning element without the relationship having under external force in external force and cleaning element
Analysis be similar to first embodiment in analysis, details are not described herein.The stationary parts is static relative to handle casing.This
In embodiment, elastic component 223,224 is dexterously utilized along drive shaft longitudinal axis L5Symmetrical structure；Elastic component is hanging down
Directly in drive shaft longitudinal axis L5And perpendicular to elastic component length direction elastic component stiffness factor much smaller than elastic component along
Drive shaft longitudinal axis L5The stiffness factor and elastic component in direction are along or parallel to cleaning element length-wise axis L4
Elastic component stiffness factor on direction is much smaller than elastic component along perpendicular to the bullet on the direction cleaning element length-wise axis L4
The alternating electromagnetic force that the characteristic and permanent magnet 225,226 of property part stiffness factor are subject to, which is approximately parallel to, to be applied on cleaning element
Along cleaning element length-wise axis L4External force characteristic, and the light reflecting surface being arranged on movable member, and adopting
With light sensing part, when applying on cleaning element along external force on the direction cleaning element length-wise axis L4, permanent magnet
225,226 opposite directions for being intended to external force move, but the internal magnetic field lines direction still near normal of permanent magnet 225,226
In the internal magnetic field lines direction that driving coil 227 generates, i.e. the two angle is constant, and the width of driving coil is greater than the fortune of magnet
Dynamic range, thus in the present embodiment, even if driving coil opposite handle shell is fixed, and permanent magnet 225,226 is opposite
Driving coil movement, it is mechanical energy that the external force, which does not still influence electromagnetic energy to the movement that permanent magnet 225,226 generates,
Efficiency, and additional electromagnetism harmonic wave is not generated, to efficiently avoid on additional harmonic noise and handle casing
Vibration.
In conclusion in the utility model, for driving type electric cleaning-nursing apparatus, including micromotor 161
Driving assembly in external force F1Effect is lower can be integrally around the rotating shaft axis L of brush head mouthpiece3Rotation, i.e. motor stator portion
Divide in external force F1It can also be therewith integrally around the rotating shaft axis L of brush head mouthpiece under effect3Rotation, to overcome existing
Driving type moves the defect of cleaning-nursing utensil；For mode of resonance electric cleaning care implement, external force is to permanent magnet 225,226
The movement of generation will not influence electromagnetic energy and be the efficiency of mechanical energy, and not generate additional electromagnetism harmonic wave, thus effectively
Ground avoids the vibration on additional harmonic noise and handle casing.
Test proves that Photosensitive pressure warning unit described in the utility model can greatly improve the accurate of pressure alarm
Property.Through carrying out actual pressure ann test to the test sample of extraction it is found that relative to existing pressure warning unit, this is practical
Novel pressure warning unit accuracy can be improved 20 times.
Claims (12)
1. a kind of photosensitive pressure warning unit for electric cleaning care appliance, the cleaning-nursing utensil includes outside handle
Shell, driving assembly, the cleaning assemblies including cleaning element, wherein the photosensitive pressure warning unit includes by least one light
Source (172,272,572) and the light sensing part of at least one photosensitive unit (171,271,571) composition face the light source
Light reflecting surface (141,241,541), detection circuit and the alarm of (172,272,572) and photosensitive unit (171,271,571)
It is moveable that part, the light source (172,272,572) and photosensitive unit (171,271,571) are disposed relative to handle casing
On movable member or the stationary parts motionless relative to handle casing and in ipsilateral, the light reflecting surface (141,241,
541) it is arranged in the stationary parts or movable part for facing that side of light source (172,272,572) and photosensitive unit (171,271,571)
On part, substantially face light source (172,272,572) and photosensitive unit (171,271,571), be applied to cleaning element (230,
330) on, direction be approximately along or be parallel to the external force (F of the axis of cleaning element along its length1) and be built in handle
Elastic component (150,223,224) generate resistance external force (F1) elastic component elastic force (F2) collective effect under, make setting exist
Relative on the moveable movable member of handle casing light source (172,272,572) and photosensitive unit (171,271,571) or
Person's light reflecting surface (141,241,541) is mobile with the movable member, is existed by the light that light source (172,272,572) issue
Incidence angle and angle of reflection in light reflecting surface (141,241,541) change, make it possible to receive from light source (172,
272,572) light-receiving area of the photosensitive unit of light changes, and then leads to the electricity of photosensitive unit (171,271,571)
Gas performance changes.
2. photosensitive pressure warning unit as described in claim 1, wherein the light source (172,272,572) is actively to shine
Stabilized light source, the photosensitive unit (171,271,571) be light irradiation after the electronics of resistance value or electric conductivity significant changes
Device.
3. photosensitive pressure warning unit as claimed in claim 2, wherein the light source (172,272,572) is LED, described
Photosensitive unit (171,271,571) is photo resistance.
4. photosensitive pressure warning unit as claimed any one in claims 1 to 3, wherein the driving component includes miniature
Motor, gear-box, drive shaft, the driving assembly can be integrally around the rotating shaft axis (L of brush head mouthpiece3) rotation；It is described
Handle casing includes handle upper casing (101) and handle lower shell (102), and the elastic component (150) is arranged in handle lower shell (102)
In, it plays reset role, elastic component upper end (151) directly or indirectly couple the handle lower shell (102) of handle portion, on elastic component
Hold (151) constant relative to handle casing position, elastic component lower end (152) couple micromotor (161), cleaning element (330)
On without external force when, elastic component (150) be in Pre strained state, the pretightning force (F of elastic component (150)3) act on micromotor
(161) on, micromotor (161) and handle lower shell (102) is made to keep relatively fixed position, when cleaning element is applied external force
(F1) when, micromotor (161) movement tends to close to or far from elastic component upper end (151), in external force (F1) act under lower elastic member
(152) are held to generate the deformation relative to handle casing, the light source (172) and photosensitive unit (171) setting assist side (170)
Towards on that side of gear-box (140), wiring board (170) is fixed on motor rack (160), the light reflecting surface (141)
It is arranged on gear-box (140).
5. photosensitive pressure warning unit as claimed in claim 4, wherein the resilient force that the elastic component (150) generates
Point arrives the rotating shaft axis (L of brush head mouthpiece3) distance be greater than external force (F1) position to brush head mouthpiece rotating shaft axis
(L3) 0.35 times of distance.
6. photosensitive pressure warning unit as claimed in claim 4, wherein the device further include be arranged in it is recessed on gear-box
Portion, this recess portion include light reflecting surface (141), the recess side (143) of gear-box, gear-box recess portion top surface (144), it is described
The recess side (143) of gear-box and the recess portion top surface (144) of gear-box constitute light sensing shielded segment.
7. photosensitive pressure warning unit as claimed in claim 6, wherein closely photosensitive unit (171) is set the light source (172)
It sets, light source (172) and/or photosensitive unit (171) partly or entirely enter the light sensing shielded segment, light source (172), light
Quick unit (171) and light reflecting surface (141) keep gap each other, which is greater than 0.1mm.
8. photosensitive pressure warning unit as claimed any one in claims 1 to 3, wherein the light source (572) and photosensitive list
First (571) are arranged on moveable actuator assembly, and it is static that the light reflecting surface (541) is disposed relative to handle casing
On motionless wiring board.
9. photosensitive pressure warning unit as claimed any one in claims 1 to 3, wherein the driving component includes by hand
The fixed driver rack (221,222) of handle shell, drive shaft (220), along the longitudinal axis (L of drive shaft (220)5) symmetrical point
Two transducer drive arms of cloth are fixed on two transducer drive arms by elastic component fixing piece (237) close to clear respectively
The elastic component (223,224) of the upper end in clean element (230) direction, setting are separate clear in two transducer drive arms (235,236)
The contrary permanent magnet (225,226) of two internal magnetic field lines below clean element (230), is arranged in two permanent magnets
Driving coil (227) between (225,226), drive shaft (220), transducer drive arm (235,236), permanent magnet (225,
It 226) is movable member, the light source (272) and photosensitive unit (271) are arranged on the wiring board in stationary parts, and light is anti-
It penetrates on the transducer drive arm (235,236) that face (241) is arranged in movable member, the light of light source (272) transmitting is through light
Reflecting surface (241) is reflected into photosensitive unit (271).
10. photosensitive pressure warning unit as claimed in claim 9, wherein the elastic component (223,224) is sheet shape piece, bullet
Property part (223,224) is along drive shaft longitudinal axis (L5) symmetrical, elastic component (223,224) is along elastic component (223,224)
The length and elastic component for being directed toward corresponding transducer drive arm (235,236) direction from elastic component fixing piece (237) are along elasticity
Part (223,224) is parallel to drive shaft longitudinal axis (L5) direction width be greater than elastic component (223,224) thickness 5 again with
On.
11. photosensitive pressure warning unit as claimed in claim 10, wherein the elastic component (223,224) is perpendicular to drive
Moving axis longitudinal axis (L5) and perpendicular to elastic component length direction elastic component stiffness factor much smaller than elastic component along driving
Axis longitudinal axis (L5) direction stiffness factor, and elastic component (223,224) is perpendicular to drive shaft longitudinal axis (L5) and hang down
Directly elastic component is much smaller than along the elastic component on cleaning element length direction in the elastic component stiffness factor of elastic component length direction
Stiffness factor, it is described much smaller than for less than 10 times or more.
12. a kind of photosensitive pressure warning unit for electric cleaning care appliance, the cleaning-nursing utensil includes outside handle
Shell, driving assembly, the cleaning assemblies including cleaning element, wherein the driving component includes micromotor, gear-box, driving
Axis, the driving assembly can be integrally around the rotating shaft axis (L of brush head mouthpiece3) rotation；The handle casing includes handle
Upper casing (101) and handle lower shell (102), the elastic component (150) are arranged in handle lower shell (102), play reset role, elasticity
Part upper end (151) directly or indirectly couples the handle lower shell (102) of handle portion, and elastic component upper end (151) are relative to handle
Enclosure location is constant, and elastic component lower end (152) couple micromotor (161), when on cleaning element (330) without external force, bullet
Property part (150) be in Pre strained state, the pretightning force (F of elastic component (150)3) act on micromotor (161), make micromotor
(161) and handle lower shell (102) keeps relatively fixed position, when cleaning element is applied external force (F1) when, micromotor
(161) movement tends to close to or far from elastic component upper end (151), in external force (F1) effect lower elastic member lower end (152) generation phase
Deformation for handle casing, the light source (572) be disposed relative to the static wiring board (170) of handle lower shell (102) or
In external force (F1) and elastic component elastic force (F2) on movable member mobile relative to handle lower shell (102) under collective effect, it is described
Photosensitive unit (571) is disposed relative on handle lower shell (102) mobile movable member or quiet relative to handle lower shell (102)
On wiring board (170) only, shone directly on photosensitive unit (571) by the light that light source (572) issue.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721518708.1U CN208611021U (en) | 2017-11-14 | 2017-11-14 | Photosensitive pressure warning unit for electric cleaning care appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721518708.1U CN208611021U (en) | 2017-11-14 | 2017-11-14 | Photosensitive pressure warning unit for electric cleaning care appliance |
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| CN208611021U true CN208611021U (en) | 2019-03-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107753134A (en) * | 2017-11-14 | 2018-03-06 | 上海携福电器有限公司 | Photosensitive pressure warning unit for electric cleaning care appliance |
| WO2020224148A1 (en) * | 2019-05-09 | 2020-11-12 | 中山市新活力智能家居电器有限公司 | Prompt device of electric toothbrush, and electric toothbrush |
| WO2020238421A1 (en) * | 2019-05-29 | 2020-12-03 | 上海携福电器有限公司 | Acoustic wave type electric cleaning and care tool and pressure warning device for such tool |
| WO2021233423A1 (en) * | 2020-05-22 | 2021-11-25 | 美家智能科技(广州)有限公司 | Electric toothbrush |
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2017
- 2017-11-14 CN CN201721518708.1U patent/CN208611021U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107753134A (en) * | 2017-11-14 | 2018-03-06 | 上海携福电器有限公司 | Photosensitive pressure warning unit for electric cleaning care appliance |
| CN107753134B (en) * | 2017-11-14 | 2023-12-08 | 上海携福电器有限公司 | Photosensitive pressure alarm device for electric cleaning and nursing appliance |
| WO2020224148A1 (en) * | 2019-05-09 | 2020-11-12 | 中山市新活力智能家居电器有限公司 | Prompt device of electric toothbrush, and electric toothbrush |
| WO2020238421A1 (en) * | 2019-05-29 | 2020-12-03 | 上海携福电器有限公司 | Acoustic wave type electric cleaning and care tool and pressure warning device for such tool |
| EP3960124A4 (en) * | 2019-05-29 | 2022-06-08 | Shanghai Shift Electrics Co., Ltd. | Acoustic wave type electric cleaning and care tool and pressure warning device for such tool |
| WO2021233423A1 (en) * | 2020-05-22 | 2021-11-25 | 美家智能科技(广州)有限公司 | Electric toothbrush |
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