WO2018000448A1 - 用于电动清洁用具驱动装置的固定结构 - Google Patents

用于电动清洁用具驱动装置的固定结构 Download PDF

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Publication number
WO2018000448A1
WO2018000448A1 PCT/CN2016/089090 CN2016089090W WO2018000448A1 WO 2018000448 A1 WO2018000448 A1 WO 2018000448A1 CN 2016089090 W CN2016089090 W CN 2016089090W WO 2018000448 A1 WO2018000448 A1 WO 2018000448A1
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WO
WIPO (PCT)
Prior art keywords
transducer
bracket
drive coil
coil
drive
Prior art date
Application number
PCT/CN2016/089090
Other languages
English (en)
French (fr)
Inventor
戴晓国
徐振武
Original Assignee
上海携福电器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海携福电器有限公司 filed Critical 上海携福电器有限公司
Priority to ES16906847T priority Critical patent/ES2877723T3/es
Priority to EP16906847.5A priority patent/EP3476364B1/en
Priority to JP2018568308A priority patent/JP6816169B2/ja
Priority to US16/314,231 priority patent/US10786338B2/en
Priority to CA3029078A priority patent/CA3029078C/en
Publication of WO2018000448A1 publication Critical patent/WO2018000448A1/zh

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/225Handles or details thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/222Brush body details, e.g. the shape thereof or connection to handle
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/24Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
    • A61C17/26Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K33/00Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B2200/00Brushes characterized by their functions, uses or applications
    • A46B2200/10For human or animal care
    • A46B2200/1066Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to a fixing structure for an electric cleaning appliance driving device, and more particularly to an electric cleaning appliance driving device for an electric toothbrush, an electric shaver, an electric cleansing device, an electric shower, and the like Fixed structure.
  • a personal cleansing appliance which includes a handle and a cleaning assembly detachably coupled to the drive shaft.
  • the handle includes a handle housing having a power supply portion, a control portion, a trigger portion, and a driver for converting the input electrical energy into a mechanical energy output.
  • the driver includes a transducer, a drive coil, a drive coil core disposed in the drive coil, and a driver bracket for supporting the driver.
  • the transducer includes a drive shaft inserted into the cleaning assembly, a transducer elastic member fixed to the driver, permanent magnets disposed on the left and right sides with respect to the longitudinal axis of the drive shaft, a permanent magnet bracket for fixing the permanent magnet, A transducer transmission arm fixed to the permanent magnet bracket and fixed to the drive shaft, and a transducer elastic member disposed on the left and right sides of the longitudinal axis of the drive shaft.
  • the cleaning elements tend to exhibit high speed reciprocating motion.
  • it should have sufficient torque to maintain a high-speed reciprocating state under load.
  • the driving device mounted inside the handle housing provides a driving torque to the cleaning member so that the cleaning member moves at a high speed, the user can often feel the vibration on the handle housing. The greater the driving torque on the cleaning member, the greater the vibration on the handle housing. .
  • CN101801308B discloses a vibration-eliminating secondary resonator for use in a personal care device comprising a handle portion, a workpiece fitting, mounted on a handle for driving a motor component of a primary resonator of the workpiece assembly and a secondary resonator connected to the motor component or handle portion, the secondary resonator comprising a spring mass fitting, wherein the resonant frequency and operation of the spring mass fitting are caused during operation of the device The vibration from the motor fitting to the handle portion is reduced.
  • An object of the present invention is to provide a fixing structure for an electric cleaning appliance driving apparatus which reduces the vibration of the handle housing by rationally arranging the existing parts without increasing the number of parts.
  • the electric cleaning implement of the present invention includes a handle including a handle housing having a power supply portion for supplying power to various portions of the cleaning appliance, various operating modes for controlling the electric cleaning appliance, and opening or closing the cleaning appliance.
  • the assembly includes a transducer, a transducer holder and a transducer assembly fixing portion
  • the driving coil assembly includes a driving coil, a driving coil bracket and a driving coil assembly fixing portion
  • the transducer includes a transducer driving shaft inserted into the cleaning assembly, at least a transducer elastic member, at least one transducer elastic member fixing member for fastening the transducer elastic member, and at least two permanent magnets having opposite polarities in a direction toward the driving coil, and the permanent magnets are opposite
  • the movement of the transducer elastic member can also be moved relative to the drive coil when the drive coil When the frequency f through an alternating current, the permanent magnet by a frequency of 0 and the electromagnetic force generated between the driving coil f 0 of
  • drive coil left bracket and drive coil right bracket are respectively arranged with drive coil left bracket hollow area and drive coil right bracket hollow area, drive coil left and right bracket hollow area allows moving parts in the transducer in the drive coil assembly Reciprocally rotating about the longitudinal axis of the transducer drive shaft or about a line parallel to the longitudinal axis of the transducer drive shaft without interference; the handle housing and the transducer assembly are fastened to each other by relative movement relative to each other by the first structural feature, the handle The housing and the drive coil assembly are fastened to each other by relative movement of the second structural feature; the transducer assembly and drive line Assembly may face contact with each other or separately coupled by relative movement of the third structural feature.
  • the first structural feature is at least one mating surface respectively disposed on the transducer left bracket and/or the transducer right bracket at an angle to the transducer drive shaft longitudinal axis L 1 and driven along the transducer
  • the direction of the longitudinal axis L 1 of the shaft corresponds to the mating mating surface provided on the handle housing.
  • the second constituting portion may also be at least one mating surface respectively disposed on the drive coil left bracket and/or the drive coil right bracket at an angle with the transducer drive shaft longitudinal axis L 1 , and along the transducer a drive shaft with matching mating surface corresponding to the longitudinal direction of the axis L 1 in the housing provided on the handle.
  • each portion in the driving coil the left and right along the transducer holder longitudinal axis L of the drive shaft at least one engagement surface disposed adjacent the top of the head 1 and a transducer disposed on the left and right bracket and Matching mating surfaces.
  • the transducer left bracket and the transducer right bracket can be symmetrically separated.
  • the drive coil left bracket and the drive coil right bracket can also be symmetrically separated.
  • the angle of engagement of the mating face with the longitudinal axis of the transducer drive shaft is greater than -45° and less than 45°. More preferably, the included angle is greater than -5° and less than 5°.
  • the mating surface is a flat surface.
  • the utility model reduces the vibration of the handle by rationally arranging the existing parts without increasing the number of parts, the utility model has the advantages of low cost, simple process and small volume.
  • the vibration on the handle housing can be effectively reduced by the fixing structure of the present invention.
  • FIG. 1 is a partial cross-sectional view of an embodiment of a drive device in accordance with the present invention showing the assembled relationship of the handle housing, the transducer assembly and the drive coil assembly;
  • Figure 2 is a schematic exploded view of the transducer assembly of Figure 1;
  • Figure 3 is a schematic exploded view of the drive coil assembly of Figure 1;
  • Figure 4 is an assembly view of the drive coil assembly and the transducer assembly
  • Figure 5 is a partial cross-sectional view showing the assembled relationship of the handle housing and the transducer assembly with the transducer concealed;
  • Figure 6 is a partial cross-sectional view showing the assembled relationship of the handle housing and the drive coil assembly
  • Figure 7 is a left side perspective view of the transducer assembly showing the first mating face and the third mating face of the respective handle housing;
  • Figure 8 is a left side view of the drive coil assembly showing the fifth and sixth mating faces of the respective handle housing;
  • Figure 9 is a right side view of the transducer assembly showing the second mating face and the fourth mating face of the respective handle housing;
  • Figure 10 is a right side view of the drive coil assembly showing the sixth mating surface of the corresponding handle housing and the eighth mating surface of the handle housing;
  • Figure 11 is a bottom view of the handle housing
  • Figure 12 is a schematic view of the torque acting on the handle housing
  • Figure 13 is a schematic view of a second comparative example showing the transducer assembly after removal of the handle housing and Assembly of the drive coil assembly;
  • Figure 14 shows the left bracket of the driving device shown in Figure 13;
  • Figure 15 shows the right bracket of the drive unit of Figure 13.
  • 16 is a permanent magnet bracket on the left side of the transducer
  • 17 is the permanent magnet bracket on the right side of the transducer
  • 21 is a transducer assembly fixture
  • 25 is the third mating surface of the left bracket of the transducer
  • 26 is a fourth mating surface of the left bracket of the transducer
  • 35 is the third mating surface of the right bracket of the transducer
  • 41 is a driving coil assembly fixing member
  • 61 is a drive bobbin
  • 63 is a drive coil core
  • 71 is the first mating surface of the handle housing
  • 73 is the third mating surface of the handle shell
  • L 1 is the longitudinal axis of the transducer drive shaft
  • M 4 is an elastic member fixing member torque
  • M 5 is the drive coil torque.
  • a cleaning appliance such as an electric toothbrush includes a handle and a cleaning assembly (not shown) detachably mounted on the handle.
  • the handle includes a handle housing 7, a transducer assembly, a drive coil assembly, a control circuit board (not shown), a battery (not shown), and the like.
  • the transducer assembly includes a transducer 1, separate transducer left and right brackets 2 and 3, and transducer assembly fixture 21.
  • the drive coil assembly includes a drive coil 6, separate drive coil left and right brackets 4 and 5, and a drive coil assembly fixture 41.
  • the transducer left bracket 2 and the transducer right bracket 3 are collectively referred to as a transducer rack; the combined driving coil left bracket 4 and the driving coil right bracket 5 are collectively referred to as To drive the coil frame.
  • the cleaning appliance supplies electric energy by means of a battery built in the handle housing 7, and an alternating voltage is applied to the driving coil 6 in a specific manner by the control circuit board, an alternating current flows through the driving coil 6, and a driving coil through which the alternating current flows 6 interacting with the transducer 1 to effect reciprocal rotation of the transducer drive shaft 11 about the transducer drive shaft longitudinal axis L 1 or about a line approximately parallel to the transducer drive shaft longitudinal axis L 1 (approximately parallel means The angle between the two straight lines is no more than 20 degrees), thereby driving the brush head coupled to the transducer drive shaft 11 about the transducer drive shaft longitudinal axis L 1 or about approximately parallel to the transducer drive shaft longitudinal axis L 1
  • the linear reciprocating rotation realizes the reciproc
  • the left and right brackets 2, 3 of the transducer are separately disposed, and the left and right brackets 4, 5 of the drive coil are separately disposed. More preferably, they are arranged symmetrically apart from each other.
  • the transducer 1 includes a transducer drive shaft 11, a transducer left side transmission arm 12, a transducer right side transmission arm 13, and a transducer Elastic member fixing member 14, transducer elastic member 15, transducer left permanent magnet bracket 16, transducer right permanent magnet bracket 17, transducer left permanent magnet 18, transducer right permanent magnet 19.
  • the transducer components are fixed together to form the transducer 1.
  • the transducer 1 and the transducer left and right brackets 2, 3 are secured together by a transducer assembly fixture 21 to form a transducer assembly.
  • a transducer left bracket hollow region 24 is disposed on the transducer left bracket 2, and a transducer right bracket hollow region 34 is disposed on the transducer right bracket 3.
  • the transducer left actuator arm 12 and the transducer right actuator arm 13 pass through the transducer left bracket hollow region 24 and the transducer right bracket hollow region 34, respectively, and the transducer left bracket
  • the hollow region 24 and the transducer right stent hollow region 34 allow the moving components in the transducer 1 to reciprocally rotate in the transducer assembly about the transducer drive shaft longitudinal axis L1 without interference.
  • the transducer elastic member fixing member 14 has a shape similar to, for example, a rectangular parallelepiped, and a corresponding shape is disposed on the transducer left bracket 2 and the transducer right bracket 3 for accommodating the transducer elastic member fixing member 14, the transducer left And the right brackets 2 and 3 and the transducer spring fasteners 14 are fastened to each other by the transducer assembly fixing member 21, that is, the three are fixed together without relative movement.
  • the transducer spring fasteners 14 are in contact with the transducer left bracket 2 and the transducer right bracket 3, respectively.
  • the handle housing 7 and the transducer assembly are fastened to each other by a relative movement of the first structural feature.
  • the first structural feature on a portion of the transducer holder 2 and the left / right stand or transducer 3 are provided with the transducer longitudinal axis L 1 of the drive shaft forms an angle of at least one of mating surfaces 22,23,32, 33, and the transducer along the shaft mating surface mated to the longitudinal direction of the axis L 1 corresponding to the housing 7 is provided on the handle 71-74.
  • the drive coil 6 includes a drive bobbin 61, a drive coil winding 62, and a drive coil core 63.
  • the drive coil core 63 is inserted into the hollow region of the drive bobbin 61, and the drive coil winding 62 is composed of an enameled wire wound around the drive coil core 63.
  • the driving coil 6 and the driving coil left and right brackets 4, 5 are fixed together by the driving coil assembly fixing member 41 to constitute a driving coil assembly, and the driving coil left bracket 4 is arranged with a driving coil left bracket hollow region 44, at the driving coil right
  • a drive coil right bracket hollow region 54 is disposed on the bracket 5.
  • the drive coil left and right bracket hollow regions 44 and 54 allow the moving components in the transducer 1 to reciprocally rotate in the drive coil assembly about the transducer drive shaft longitudinal axis L1 without interference.
  • the left and right brackets 4, 5 of the drive coil are respectively arranged to accommodate the shape of the drive bobbin 61.
  • the drive coil left and right brackets 4, 5 and the drive coil 6 are fastened to each other by the drive coil assembly fixing member 41, that is, the three have no relative The moving ground is fixed together.
  • the drive bobbins 61 are in contact with the drive coil left and right brackets 4, 5, respectively.
  • the handle housing 7 and the drive coil assembly are fastened to each other in a non-relative movement by means of the second structural feature.
  • the second structural feature is at least one mating surface 42 , 43 , 52 , 53 respectively disposed on the drive coil left bracket 4 and/or the drive coil right bracket 5 at an angle with the transducer drive shaft longitudinal axis L 1 . and matching a mating surface of the transducer along the longitudinal axis L of the drive shaft 1 in a corresponding housing 7 is provided on the handle 75-78.
  • the left transducer in the transducer holder 2 is arranged on the shaft remote from the head end L 1 of the fourth longitudinal axis of the transducer with a third mating surface 25 of the left stand and transducers in the left bracket Face 26.
  • Right bracket transducer 3 along a fourth mating surface of the transducer shaft is arranged transducer the third right frame 35 and the mating surface of the transducer on the right stand away from the head end L 1 of the longitudinal axis 36.
  • the fourth mating surface 46 of the drive coil left bracket and the fourth mating surface 26 of the left bracket of the transducer are matched, and the third mating surface 55 of the right coil of the driving coil is matched with the third mating surface 35 of the right bracket of the transducer, and the driving coil is right.
  • the bracket fourth mating face 56 mates with the transducer right bracket fourth mating face 36, and it is apparent that the third structural feature allows the transducer assembly and the drive coil assembly to be coupled in a relatively movable manner.
  • the left side bracket 2 of the transducer is arranged with a first matching surface 22 of the left bracket of the transducer (corresponding to the first mating surface 71 of the handle housing) and a left bracket of the transducer.
  • the second mating surface 23 (corresponding to the third mating surface 73 of the handle housing), the transducer left bracket first mating surface 22 or the transducer left bracket second mating surface 23 is distributed around the transducer drive shaft longitudinal axis L 1
  • the angle formed by the longitudinal axis L 1 of the transducer drive shaft is greater than -45° and less than 45°, preferably greater than -5° and less than 5°.
  • the transducer right bracket 3 is disposed with a transducer right bracket first mating surface 32 (corresponding to the handle housing second mating surface 72) and a transducer right bracket second mating surface 33 (corresponding to the fourth mating surface of the handle shell) 74)
  • the transducer right bracket first mating face 32 and the transducer right bracket second mating face 33 are distributed around the transducer drive shaft longitudinal axis L 1 and are formed with the transducer drive shaft longitudinal axis L 1
  • the included angles are all greater than -45° and less than 45°, preferably greater than -5° and less than 5°.
  • a driving coil left bracket 4 is disposed with a driving coil left bracket first mating surface 42 (corresponding to the handle housing fifth mating surface 75) and a driving coil left bracket second mating surface 43 (corresponding to the handle housing seventh mating surface 77),
  • the drive coil left bracket first mating surface 42 or the drive coil left bracket second mating surface 43 is distributed around the transducer drive shaft longitudinal axis L 1 and forms an angle greater than the transducer drive shaft longitudinal axis L 1 . 45° and less than 45°, preferably more than -5° and less than 5°.
  • a driving coil right bracket 5 is disposed with a driving coil right bracket first mating surface 52 (corresponding to the handle housing sixth mating surface 76) and a driving coil right bracket second mating surface 53 (corresponding to the handle housing eighth mating surface 78),
  • the drive coil right bracket first mating surface 52 and the drive coil right bracket second mating surface 53 are distributed around the transducer drive shaft longitudinal axis L 1 and form an angle greater than the transducer drive shaft longitudinal axis L 1 . 45° and less than 45°, preferably more than -5° and less than 5°.
  • the handle housing 7 along the shaft of the transducer arrangement of Figure 1 the direction of the longitudinal axis 11 of eight L handle housing mating surfaces, respectively, a first mating surface 71 of the handle housing, the first handle housing 2 mating surface 72, handle shell third mating surface 73, handle shell fourth mating surface 74, handle shell fifth mating surface 75, handle shell sixth mating surface 76, handle shell seventh mating surface 77, handle shell eighth fit Face 78.
  • the handle housing mating faces 71 to 78 are distributed around the transducer drive shaft longitudinal axis L 1 and form an angle with the transducer drive shaft longitudinal axis L 1 that is greater than -45° and less than 45°, preferably greater than -5°. And less than 5 °.
  • the first mating surface 71 of the handle shell matches the first mating surface 22 of the left bracket of the transducer
  • the second mating surface 72 of the handle shell matches the right bracket of the transducer.
  • the first mating surface 32, the third mating surface 73 of the handle shell matches the second mating surface 23 of the left bracket of the transducer, the fourth mating surface 74 of the handle shell matches the second mating surface 33 of the right bracket of the transducer, and the fifth mating surface of the handle shell 75 matching drive coil left bracket first mating surface 42, handle housing sixth mating surface 76 matching drive coil right bracket first mating surface 52, handle shell seventh mating surface 77 matching drive coil left bracket second mating surface 43, handle housing The eighth mating surface 78 matches the second mating surface 53 of the drive coil right bracket.
  • the handle housing 7 is constrained by its own mechanical strength to the above-mentioned mating mating surfaces, so that the handle housing 7 and the transducer left bracket 2 are coupled to each other in a relatively movable manner, and the handle housing 7 and the transducer right bracket 3 are not movable relative to each other. Coupled together, the handle housing 7 and the drive coil left bracket 4 are coupled together in a non-movable manner, and the handle housing 7 and the drive coil right bracket 5 are coupled to each other in a relatively movable manner.
  • the transducer elastic member fixing member 14 and the transducer left and right brackets 2, 3 are fixed by the transducer assembly fixing member 21, and the transducer left bracket 2 and the transducer right bracket 3 are respectively respectively respectively
  • a transducer left bracket hollow region 24 and a transducer right bracket hollow region 34 are disposed.
  • the transducer left bracket hollow region 24 and the transducer right bracket hollow region 34 allow the moving component in the transducer 1 to be wound around the transducer drive shaft longitudinal axis L 1 without interference in the transducer assembly or about approximately parallel to linear transducer shaft longitudinal axis L 1 of the reciprocal rotation.
  • the drive bobbin 61 and the drive coil left and right brackets 4, 5 are fixed by the drive coil assembly fixing member 41.
  • a drive coil left bracket hollow region 44 and a drive coil right bracket hollow region 54 are disposed on the drive coil left bracket 4 and the drive coil right bracket 5, respectively.
  • Driving coil left bracket hollow region 44 and drive coil right bracket hollow region 54 allows moving components in transducer 1 to wrap around the transducer drive shaft longitudinal axis L 1 without interference in the drive coil assembly or about approximately parallel to the transducer The linear rotation of the longitudinal axis L 1 of the drive shaft reciprocates.
  • the fixed transducer 1 and the transducer left and right brackets 2, 3 constitute a transducer assembly
  • the fixed drive bobbin 61 and the drive coil left and right brackets 4, 5 constitute a drive coil assembly
  • the transducer assemblies are coupled in a relatively movable manner.
  • transducer left bracket 2 and the transducer right bracket 3 and the drive coil left bracket 4 and the drive coil right bracket 5 are distributed along the transducer drive shaft longitudinal axis L 1 and around the transducer drive shaft longitudinal axis L 1
  • a plurality of mating faces, such as eight mating faces 22, 23, 32, 33, 42, 43, 52, 53. 7 on the handle housing along the longitudinal axis of the transducer shaft L 1 and surrounds the transducer shaft longitudinal axis L 1 are disposed a plurality of mating surfaces, for example, eight mating surfaces 71,72,73,74,75, 76, 77, 78.
  • the actuator elastic fixing member 14 and the driving coil left bracket 4, the driving coil right bracket 5, and the driving bobbin 61 are fixed in a non-relatively movable manner.
  • the transducer left bracket 2 and/or the transducer right bracket 3 are arranged with only one surround transducer drive shaft longitudinal axis L 1 and formed with the transducer drive shaft longitudinal axis L 1
  • the mating faces of the angles greater than -45° and less than 45° are correspondingly arranged on the handle housing 7 with a matching surface of the left bracket of the transducer and/or a matching surface of the right bracket of the transducer.
  • the handle shell fits the face.
  • the drive coil left bracket 4 and/or the drive coil right bracket 5 are disposed only around the transducer drive shaft longitudinal axis L 1 and form an angle greater than -45° with the transducer drive shaft longitudinal axis L 1 and A mating surface of less than 45° is correspondingly disposed on the handle housing 7 with a handle housing mating surface that fits snugly with a drive coil left bracket mating surface and/or a drive coil right bracket mating surface.
  • the handle housing 7 and the transducer left and right brackets 2, 3 and the drive coil left and right brackets 4, 5 are coupled to each other in a relatively movable manner.
  • the left and right permanent magnets 18 and 19 of the transducer and the energized drive coil 6 act together, the transducer is left
  • the side permanent magnets 18 and the transducer right permanent magnets 19 respectively produce forces F 1 , F 2 of approximately the same magnitude and opposite directions.
  • the transducer 1 is properly configured, such as by properly configuring the moment of inertia of the transducer 1 and the transducer elastic member 15 such that the transducer 1 responds resonantly to the driving forces F 1 , F 2 having a frequency f 0 , transducer 11 can drive the transducer about the shaft longitudinal axis L 1 reciprocal rotation so as to drive the cleaning elements on the head reciprocally rotated.
  • the forces F 1 and F 2 acting on the left permanent magnet 18 on the left side of the transducer and the permanent magnet 19 on the right side of the transducer respectively form a transducer driving torque M 1
  • the definition J is a transducing
  • the definition C is the angular acceleration of the moving part and the brush head in the transducer 1
  • the definition M 2 is the moving part of the transducer 1 and the brush head during the movement
  • the transducer damping torque, defined as M 3 is the transducer elastic torque produced by the transducer spring 15 .
  • the transducer elastic member fixing member 14 is fixedly coupled to the transducer left bracket 2 and the transducer right bracket 3, and the handle housing is 7
  • the handle housing 7 and the transducer left bracket 2 and the transducer are realized by mating the mating faces 71, 72, 73, 74 with the mating faces 22, 32, 23, 33 on the left and right brackets 2, 3 of the transducer, respectively.
  • the right bracket 3 is fixed, and it is obvious that the handle housing 7 is subjected to the torque M 4 from the elastic member fixing member.
  • the drive bobbin 61 is fixedly coupled to the drive coil left bracket 4 and the drive coil right bracket 5, and the handle housing 7 passes through the mating faces 75, 76, 77, 78 and the drive coil left and right brackets 4, 5, respectively.
  • the elastic member fixing member torque M 4 and the driving coil torque M 5 are opposite in direction.
  • a cleaning tool for driving a brush head by, for example, a DC permanent magnet micromotor, a rotor of a DC permanent magnet micromotor (corresponding to a transducer assembly in the present invention) and a stator (corresponding to a driving coil component in the present invention) by coupling with the housing
  • the resultant torque on the motor housing is CJ motor
  • the motor is secured by a series of structures linked to the handle housing, thus subject to a torque on the motor size CJ handle housing, the motor of the cleaning appliance CJ Output torque related.
  • the transducer left bracket (2) and the transducer right bracket (3) divide the driving coil bracket for fastening the driving coil (6) into a driving coil left bracket (4) and a driving coil right bracket (5), And they are respectively fixed by the handle housing 7 as a transducer assembly and a drive coil assembly, the drive coil assembly and the transducer assembly being coupled in a relatively movable manner such that the resultant torque on the handle housing 7 of the present invention is relative to the resultant torque on said conventional cleaning implement handle housing is reduced, reducing the transducer is about equal to the damping torque M 2, which can effectively reduce vibration in the handle housing 7.
  • the resultant torque on the handle housing 7 is CJ-M 1 , which is the resultant torque in the handle housing 7 when there is no load on the brush head.
  • the CJ becomes smaller, M 1 becomes larger, and CJ is larger than M 1 . Therefore, the combined torque CJ-M 1 when there is a load on the brush head is much smaller than the combined torque when there is no load on the brush head.
  • the combined torque on the handle housing 7 when the load is applied to the brush head is only the CJ motor reduction of the combined torque on the handle housing 7 when the brush head is unloaded. The amount of reduction.
  • the vibration of the handle housing 7 can also be reduced by the relatively movable coupling of the drive coil assembly and the transducer assembly.
  • Figures 13 to 15 show a second comparative example (e.g., Chinese Patent Application No. 201510042433.8).
  • the transducer and the driving coil are collectively referred to as a driving device, and the left bracket of the transducer and the left bracket of the driving coil are fixedly coupled together in a non-relative manner or both.
  • the structure is called the left bracket 8 of the driving device, and the structure in which the right bracket of the transducer and the right bracket of the driving coil are not fixedly movable together or the two are integrally formed is called a right bracket 9 of the driving device, and is defined by driving.
  • the combination of the drive left bracket 8 and the drive right bracket 9 to which the device holder 81 is fastened is the drive frame.
  • the handle housing 7 passes through the mating faces 71, 72, 73, 74, 75, 76, 77, 78 and corresponding mating faces 82, 93, 83, 92, 84 on the left and right brackets 8, 9 of the drive, respectively.
  • the 95, 85, and 94 are tightly fitted to realize that the handle housing 7 and the driving device frame are fixed, and the handle housing and the driving device frame are coupled to each other in a relatively movable manner.
  • the first mating surface 82 of the left bracket of the driving device and the third mating surface 84 of the left bracket of the driving device are in the same plane, and the second mating surface 83 of the left bracket of the driving device and the fourth mating surface 85 of the left bracket of the driving device are in the same plane.
  • the first mating surface 92 of the right bracket of the driving device and the third mating surface 94 of the right bracket of the driving device are in the same plane, and the second mating surface 93 of the right bracket of the driving device and the fourth mating surface 95 of the right bracket of the driving device are in the same plane.
  • the drive frame has only a plurality of points or a plurality of mating areas. It is fixed by the handle housing.
  • the drive frame fixed by the handle housing creates additional deformation under static external forces or static applied moments.
  • the same force couple is applied to a hollow rectangular parallelepiped or a cylinder or a torus having the same cross-sectional shape, and the torsion angle of the hollow rectangular parallelepiped or the cylinder or the torus is in the form of a hollow rectangular parallelepiped or a cylinder or a torus.
  • the length of the force couple vector direction is proportional. That is, the larger the length of the hollow rectangular parallelepiped or the cylinder or the toroid in the direction of the coupler vector, the larger the twist angle.
  • the larger the torsion angle of the hollow cuboid or the cylinder or the torus the larger the vibration amplitude of the hollow cuboid or the cylinder or the torus is transmitted to the vibration of their respective fixing members. The amplitude is also larger.
  • the transducer 1 is in a resonant state under the action of the alternating transducer drive torque M 1 having a frequency f 0 .
  • the shape of the drive coil frame and the transducer frame in the embodiment of the present invention is similar to that of the drive device frame in the second comparative example, and is generally a hollow rectangular parallelepiped.
  • the drive in the embodiment of the present invention and the second comparative example The coil frame, the transducer frame, and the drive frame are all subjected to alternating torque at a frequency f 0 .
  • the driving coil frame comprises a fixed driving coil left bracket 4 and a driving coil right bracket 5, and the driving coil frame is used for fixing the driving coil 6, so that the driving coil 6 does not act when subjected to alternating external force and/or external force couple. Produce displacement.
  • the natural frequency of the drive coil frame should be much larger than the alternating external force. And / or the frequency of the applied couple.
  • the amplitude is greater than the amplification of the amplitude of the static force.
  • the vector direction of the primary couple applied to the drive coil frame is approximately parallel to the transducer drive shaft longitudinal axis L 1 , thus driving the coil frame along the transducer drive shaft longitudinal axis L 1
  • the shorter the length in the direction the larger the natural frequency of the drive coil frame, and the smaller the magnification of the ratio of the amplitude of the dynamic force on the coil frame to the amplitude of the static force, and the amplitude of the dynamic force of the drive coil frame.
  • the transducer is perpendicular to the rack shaft the transducer cross-sectional shape of the longitudinal axis L 1 is almost constant, the transducer along the rack shaft 1 in the direction of the longitudinal axis L
  • the shorter the length the larger the natural frequency of the transducer frame, the smaller the magnification of the ratio of the amplitude of the dynamic force of the transducer frame to the amplitude of the static force, and the smaller the amplitude of the dynamic force of the transducer frame.
  • the amplitude of the dynamic force on the handle housing 7 is also smaller.
  • the vector direction of the dynamic couple applied to the drive frame or the transducer frame or the drive coil frame is substantially parallel to the longitudinal axis L 1 of the transducer drive shaft, and the angle between the two is -10°. Up to 10°, preferably 0°.
  • the drive coil assembly and the transducer assembly are coupled in a relatively movable manner, the drive coil assembly and the transducer assembly being similar to a hollow rectangular parallelepiped, but the length of the drive coil assembly or the transducer assembly in the direction of the force couple vector is less than The length of the drive coil assembly and the transducer assembly that are fixed together in the direction of the coupler vector (ie, the structure of the second aspect), and thus the couple of the same alternating
  • the amplitude of the drive coil assembly or the transducer assembly is much smaller than the amplitude of the drive coil assembly and the transducer assembly (driver frame) that are fixed together, so that the amplitude of the handle housing is also small, so the inventive inventive
  • the drive coil assembly and the transducer assembly are coupled to each other, and the handle housing and the drive coil assembly are fixed, and the handle housing and the transducer assembly are fixed to effectively reduce the vibration of the handle housing.
  • the transducer in the present invention is not limited to the above structure.
  • the transducer may comprise at least one permanent magnet having different poles on the same end face.
  • the mating surface can be any shape suitable for a tight fit, preferably a flat surface.

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Abstract

一种用于电动清洁用具驱动装置的固定结构,驱动装置置于手柄外壳(7)内,其包括换能器组件和驱动线圈组件,换能器组件包括换能器(1)、换能器支架及换能器组件固定件(21),驱动线圈组件包括驱动线圈(6)、驱动线圈支架及驱动线圈组件固定件(41),换能器支架和驱动线圈支架各自包括彼此分离设置的左、右支架(2,3;4,5);驱动线圈左、右支架(4,5)上分别布置有允许换能器运动部件在驱动线圈组件中无干涉地绕换能器驱动轴(11)纵向轴线往复旋转的支架中空区域(44,54);手柄外壳(7)分别与换能器组件或驱动线圈组件通过第一或第二结构特征部彼此不可相对运动地紧固;换能器组件和驱动线圈组件通过第三结构特征部可相对运动地联结。所述固定结构可有效减小手柄外壳(7)上的振动。

Description

用于电动清洁用具驱动装置的固定结构 技术领域
本发明涉及一种用于电动清洁用具驱动装置的固定结构,更具体地说,涉及一种用于如电动牙刷、电动剃须刀、电动洁面器、电动沐浴器之类的电动清洁用具驱动装置的固定结构。
背景技术
在本申请人提交的申请号为201510042433.8的中国专利申请中,披露了一种个人清洁护理用具,其包括手柄和与驱动轴可拆卸地联接在一起的清洁组件。手柄包括手柄外壳,手柄外壳内部装有电源部分、控制部分、触发部分和将输入的电能转换为机械能输出的驱动器。驱动器包括换能器、驱动线圈、设置在驱动线圈中的驱动线圈铁芯、用于支承驱动器的驱动器支架。换能器包括插入清洁组件的驱动轴、紧固于驱动器的换能器弹性件固定件、相对于驱动轴纵向轴线布置在左右两侧的永磁体、用于固联永磁体的永磁体支架、与永磁体支架固联并与驱动轴固联的换能器传动臂以及设置在驱动轴纵向轴线左右两侧的换能器弹性件。
对于上述类型的电动清洁用具而言,清洁元件往往呈现高速往复运动。为实现清洁元件的高速往复运动,其应具备足够的力矩,以便在负载状态下保持高速往复运动状态。在装于手柄外壳内部的驱动装置向清洁元件提供驱动力矩致使清洁元件高速运动时,使用者往往能感觉到手柄外壳上的振动,清洁元件上的驱动力矩越大,手柄外壳上的振动越大。
为补偿和/或减小由主谐振器运行产生的振动,CN101801308B公开了一种在个人护理设备中使用的振动消除次级谐振器,其包括手柄部分、工件配件、安装在手柄上用于驱动工件配件的主谐振器的电机配件以及连接至电机配件或手柄部分的次级谐振器,该次级谐振器包括弹簧质量配件,其中在所述设备操作时,弹簧质量配件的谐振频率和操作导致从所述电机配件到所述手柄部分的振动减小。
发明内容
本发明的任务是提供一种用于电动清洁用具驱动装置的固定结构,其在 不增加零件数的前提下,利用现有零件的合理配置来减小手柄外壳的振动。本发明的电动清洁用具包括手柄,手柄包括手柄外壳,手柄外壳内装有用以向清洁用具的各个部分提供电力的电源部分、用以控制电动清洁用具的各种工作模式以及开启或关闭该清洁用具的控制部分、用以启动或关闭清洁用具运转的触发部分和将输入的电能转换为机械能输出的驱动装置,驱动装置置于手柄外壳内,驱动装置包括换能器组件和驱动线圈组件,换能器组件包括换能器、换能器支架及换能器组件固定部,驱动线圈组件包括驱动线圈、驱动线圈支架及驱动线圈组件固定部,换能器包括插入清洁组件的换能器驱动轴、至少一个换能器弹性件、至少一个紧固换能器弹性件的换能器弹性件固定件、以及至少两个永磁体,永磁体在朝向驱动线圈方向的磁极极性相反,永磁体既可相对于换能器弹性件固定件移动也可相对于驱动线圈移动,当驱动线圈通过频率为f0的交变电流时,所述永磁体和通过频率为f0的交变电流的驱动线圈之间产生的电磁力驱动换能器谐振,其中,换能器支架包括彼此分离设置的换能器左、右支架,换能器与换能器左、右支架相互固定连接,驱动线圈支架包括彼此分离设置的驱动线圈左、右支架,驱动线圈与驱动线圈左、右支架相互固定连接,驱动线圈左支架和驱动线圈右支架上分别布置有驱动线圈左支架中空区域和驱动线圈右支架中空区域,驱动线圈左、右支架中空区域允许换能器中的运动部件在驱动线圈组件中无干涉地绕换能器驱动轴纵向轴线或绕近似平行于换能器驱动轴纵向轴线的直线往复旋转;手柄外壳和换能器组件通过第一结构特征部彼此不可相对运动地紧固,手柄外壳和驱动线圈组件通过第二结构特征部彼此不可相对运动地紧固;所述换能器组件和驱动线圈组件通过第三结构特征部可以彼此面向地接触或分离地相对运动地联结。
优选第一结构特征部为在换能器左支架和/或换能器右支架上分别设置的与换能器驱动轴纵向轴线L1形成夹角的至少一个配合面,以及沿换能器驱动轴纵向轴线L1方向对应地在手柄外壳上设置的与之相配的配合面。
所述第二构特征部也可以为在驱动线圈左支架和/或驱动线圈右支架上分别设置的与换能器驱动轴纵向轴线L1形成夹角的至少一个配合面,以及沿换能器驱动轴纵向轴线L1方向对应地在手柄外壳上设置的与之相配的配合面。
优选第三结构特征部为分别在驱动线圈左、右支架上沿换能器驱动轴 纵向轴线L1靠近刷头的顶端布置的至少一个配合面以及在换能器左、右支架上设置的与之相配的配合面。
换能器左支架和换能器右支架可以对称地分离设置。驱动线圈左支架和驱动线圈右支架也可以对称地分离设置。
优选配合面与换能器驱动轴纵向轴线形成的夹角大于-45°且小于45°。更为优选的是,所述夹角大于-5°且小于5°。
优选所述配合面为平面。
由于本实用新型是在不增加零件数的前提下通过现有零件的合理配置来减小手柄的振动,因此本实用新型具备低成本、工艺简单以及体积小的优点。利用本发明的固定结构可以有效减小手柄外壳上的振动。
附图说明
图1为根据本发明的驱动装置实施例的局部剖视图,其示出了手柄外壳、换能器组件和驱动线圈组件的装配关系;
图2为图1所示换能器组件的示意性分解图;
图3为图1所示驱动线圈组件的示意性分解图;
图4为驱动线圈组件和换能器组件装配图;
图5的局部剖视图示出了手柄外壳和隐匿了换能器的换能器组件的装配关系;
图6的局部剖视图示出了手柄外壳和驱动线圈组件的装配关系;
图7为换能器组件左侧立体图,其示出了相应的手柄外壳第一配合面和第三配合面;
图8为驱动线圈组件左侧视图,其示出了相应的手柄外壳第五配合面和第七配合面;
图9为换能器组件右侧视图,其示出了相应的手柄外壳第二配合面和第四配合面;
图10为驱动线圈组件右侧视图,其示出了相应的手柄外壳第六配合面和手柄外壳第八配合面;
图11为手柄外壳仰视图;
图12为作用于手柄外壳上的转矩示意图;
图13为第二对比例的示意图,其示出了拆除手柄外壳后换能器组件和 驱动线圈组件的装配情况;
图14示出了图13所示驱动装置的左支架;
图15示出了图13所示驱动装置的右支架。
主要附图标记说明
1为换能器;
2为换能器左支架;
3为换能器右支架;
4为驱动线圈左支架;
5为驱动线圈右支架;
6为驱动线圈;
7为手柄外壳;
8为第二对比例中驱动装置左支架;
9为第二对比例中的驱动装置右支架;
11为换能器驱动轴;
12为换能器左侧传动臂;
13为换能器右侧传动臂;
14为换能器弹性件固定件;
15为换能器弹性件;
16为换能器左侧永磁体支架;
17为换能器右侧永磁体支架;
18为换能器左侧永磁体;
19为换能器右侧永磁体;
21为换能器组件固定件;
22为换能器左支架第一配合面;
23为换能器左支架第二配合面;
24为换能器左支架中空区域;
25为换能器左支架第三配合面;
26为换能器左支架第四配合面;
32为换能器右支架第一配合面;
33为换能器右支架第二配合面;
34为换能器右支架中空区域;
35为换能器右支架第三配合面;
36为换能器右支架第四配合面;
41为驱动线圈组件固定件;
42为驱动线圈左支架第一配合面;
43为驱动线圈左支架第二配合面;
44为驱动线圈左支架中空区域;
45为驱动线圈左支架第三配合面;
46为驱动线圈左支架第四配合面;
52为驱动线圈右支架第一配合面;
53为驱动线圈右支架第二配合面;
54为驱动线圈右支架中空区域;
55为驱动线圈右支架第三配合面;
56为驱动线圈右支架第四配合面;
61为驱动线圈架;
62为驱动线圈绕组;
63为驱动线圈铁芯;
71为手柄外壳第一配合面;
72为手柄外壳第二配合面;
73为手柄外壳第三配合面;
74为手柄外壳第四配合面;
75为手柄外壳第五配合面;
76为手柄外壳第六配合面;
77为手柄外壳第七配合面;
78为手柄外壳第八配合面;
81为第二对比例中的驱动装置固定件;
82为第二对比例中的驱动装置左支架第一配合面;
83为第二对比例中的驱动装置左支架第二配合面;
84为第二对比例中的驱动装置左支架第三配合面;
85为第二对比例中的驱动装置左支架第四配合面;
92为第二对比例中的驱动装置右支架第一配合面;
93为第二对比例中的驱动装置右支架第二配合面;
94为第二对比例中的驱动装置右支架第三配合面;
95为第二对比例中的驱动装置右支架第四配合面;
L1为换能器驱动轴纵向轴线;
M4为弹性件固定件转矩;
M5为驱动线圈转矩。
具体实施方式
下文以电动牙刷为例并结合附图更详细地描述本发明的示例性实施例。如前所述,虽然下面仅以电动牙刷为例进行解释说明,但本发明不限于此。本发明也可适用于电动剃须刀、电动洁面器、电动沐浴器等。
在全部附图中,类似的附图标记表示相似的部件。
为了清楚起见,在本说明书中采用了表述空间相对位置的词语如“左”、“右”等来简单描述如图所示的一个元件或特征与另一元件(一或多个)或特征(一或多个)的相互关系,其中,“左”和“右”是相对于换能器驱动轴纵向轴线而言的,面向相应视图沿垂直于驱动轴纵向轴线的方向在驱动轴纵向轴线的左侧定义为“左”,其右侧定义为“右”。
此外,本申请中使用的词汇“和/或”包括所列出的一或多个相关联的词汇中的任一个和所有组合。
尽管本说明书中使用了词语“第一”、“第二”、“第三”等来描述多个元件或构成部分,这些元件或构成部分不应受这些词语的限制。这些词语仅用于区分一个元件或构成部分和另一元件或构成部分,而不包含“顺序”。因此,将下面讨论的那些元件或构成部分的序数词相互变换也没有超出本发明的构思和范围。
作为一个示例,如图1至图4所示,如电动牙刷之类的清洁用具包括手柄和可拆卸地安装在手柄上的清洁组件(图中未示出)。手柄包括手柄外壳7、换能器组件、驱动线圈组件、控制线路板(未示出)、电池(未示出)等。换能器组件包括换能器1、分离设置的换能器左和右支架2和3、换能器组件固定件21。驱动线圈组件包括驱动线圈6、分离设置的驱动线圈左和右支架4和5、驱动线圈组件固定件41。在本说明书中,将组合在一起的换能器左支架2以及换能器右支架3统称之为换能器机架;将组合在一起的驱 动线圈左支架4以及驱动线圈右支架5统称之为驱动线圈机架。清洁用具依靠内置于手柄外壳7的电池提供电能,通过控制线路板以特定的方式在驱动线圈6上施加交变电压,在驱动线圈6上流过交变的电流,流过交变电流的驱动线圈6和换能器1相互作用,从而实现换能器驱动轴11绕换能器驱动轴纵向轴线L1或绕近似平行于换能器驱动轴纵向轴线L1的直线往复旋转(近似平行是指两条直线的夹角不大于20度),从而驱动联接在换能器驱动轴11上的刷头绕换能器驱动轴纵向轴线L1或绕近似平行于换能器驱动轴纵向轴线L1的直线往复旋转,进而实现刷头上清洁元件的往复运动而达到清洁效果。
优选换能器左、右支架2、3分离设置,驱动线圈左、右支架4、5分离设置。更可取的是它们彼此对称地分离设置。
如图2、图5、图7、图9、图11所示,换能器1包括换能器驱动轴11、换能器左侧传动臂12、换能器右侧传动臂13、换能器弹性件固定件14、换能器弹性件15、换能器左侧永磁体支架16、换能器右侧永磁体支架17、换能器左侧永磁体18、换能器右侧永磁体19。上述换能器各配件固联在一起构成换能器1。换能器1和换能器左、右支架2、3通过换能器组件固定件21固联在一起构成换能器组件。在换能器左支架2上布置有换能器左支架中空区域24,在换能器右支架3上布置有换能器右支架中空区域34。在换能器组件中,换能器左侧传动臂12和换能器右侧传动臂13分别穿过换能器左支架中空区域24和换能器右支架中空区域34,换能器左支架中空区域24和换能器右支架中空区域34允许换能器1中的运动部件在换能器组件中无干涉地绕换能器驱动轴纵向轴线L1往复旋转。换能器弹性件固定件14的形状例如近似于长方体,在换能器左支架2和换能器右支架3上布置对应的形状用以容纳换能器弹性件固定件14,换能器左和右支架2和3与换能器弹性件固定件14通过换能器组件固定件21相互紧固,即三者无相对运动地固联在一起。换能器弹性件固定件14分别和换能器左支架2以及换能器右支架3接触。而手柄外壳7和换能器组件通过第一结构特征部彼此不可相对运动地紧固。第一结构特征部为在换能器左支架2和/或换能器右支架3上分别设置的与换能器驱动轴纵向轴线L1形成夹角的至少一个配合面22、23、32、33,以及沿换能器驱动轴纵向轴线L1方向对应地在手柄外壳7上设置的与之相配的配合面71-74。
如图3、图6、图8、图10、图11所示,驱动线圈6包括驱动线圈架61、驱动线圈绕组62、驱动线圈铁芯63。驱动线圈铁芯63插入驱动线圈架61的中空区域,驱动线圈绕组62由漆包线环绕驱动线圈铁芯63绕制组成。驱动线圈6和驱动线圈左、右支架4、5通过驱动线圈组件固定件41固联在一起构成驱动线圈组件,在驱动线圈左支架4上布置有驱动线圈左支架中空区域44,在驱动线圈右支架5上布置有驱动线圈右支架中空区域54。驱动线圈左和右支架中空区域44和54允许换能器1中的运动部件在驱动线圈组件中无干涉地绕换能器驱动轴纵向轴线L1往复旋转。在驱动线圈左右支架4、5上分别布置有用以容纳驱动线圈架61的形状,驱动线圈左、右支架4、5和驱动线圈6通过驱动线圈组件固定件41相互紧固,即三者无相对运动地固联在一起。驱动线圈架61分别和驱动线圈左、右支架4、5接触。而手柄外壳7和驱动线圈组件通过第二结构特征部彼此不可相对运动地紧固。第二结构特征部为在驱动线圈左支架4和/或驱动线圈右支架5上分别设置的与换能器驱动轴纵向轴线L1形成夹角的至少一个配合面42、43、52、53,以及沿换能器驱动轴纵向轴线L1方向对应地在手柄外壳7上设置的与之相配的配合面75-78。
如图5所示,换能器左支架2在沿换能器驱动轴纵向轴线L1远离刷头的末端上布置有换能器左支架第三配合面25和换能器左支架第四配合面26。换能器右支架3在沿换能器驱动轴纵向轴线L1远离刷头的末端上布置有换能器右支架第三配合面35和换能器右支架第四配合面36。
如图6所示,在驱动线圈左支架4上沿换能器驱动轴纵向轴线L1靠近刷头的顶端布置有驱动线圈左支架第三配合面45和驱动线圈左支架第四配合面46。在驱动线圈右支架5上沿换能器驱动轴纵向轴线L1靠近刷头的顶端布置有驱动线圈右支架第三配合面55和驱动线圈右支架第四配合面56。如图1至4所示,将驱动线圈组件和换能器组件与手柄外壳7装配在一起时,驱动线圈左支架第三配合面45和换能器左支架第三配合面25可以彼此面向地接触也可以彼此面向地分离。同理,驱动线圈左支架第四配合面46和换能器左支架第四配合面26匹配,驱动线圈右支架第三配合面55和换能器右支架第三配合面35匹配,驱动线圈右支架第四配合面56和换能器右支架第四配合面36匹配,显而易见,通过上述第三结构特征部允许换能器组件和驱动线圈组件可以相对运动地联结。
参见图2、图3、图7至图10,换能器左支架2上布置有换能器左支架第一配合面22(对应于手柄外壳第一配合面71)和换能器左支架第二配合面23(对应于手柄外壳第三配合面73),所述换能器左支架第一配合面22或换能器左支架第二配合面23环绕换能器驱动轴纵向轴线L1分布且同换能器驱动轴纵向轴线L1形成的夹角均大于-45°且小于45°,优选大于-5°且小于5°。换能器右支架3上布置有换能器右支架第一配合面32(对应于手柄外壳第二配合面72)和换能器右支架第二配合面33(对应于手柄外壳第四配合面74),所述换能器右支架第一配合面32和换能器右支架第二配合面33环绕换能器驱动轴纵向轴线L1分布且同换能器驱动轴纵向轴线L1形成的夹角均大于-45°且小于45°,优选大于-5°且小于5°。驱动线圈左支架4上布置有驱动线圈左支架第一配合面42(对应于手柄外壳第五配合面75)和驱动线圈左支架第二配合面43(对应于手柄外壳第七配合面77),所述驱动线圈左支架第一配合面42或驱动线圈左支架第二配合面43环绕换能器驱动轴纵向轴线L1分布且同换能器驱动轴纵向轴线L1形成的夹角均大于-45°且小于45°,优选大于-5°且小于5°。驱动线圈右支架5上布置有驱动线圈右支架第一配合面52(对应于手柄外壳第六配合面76)和驱动线圈右支架第二配合面53(对应于手柄外壳第八配合面78),所述驱动线圈右支架第一配合面52和驱动线圈右支架第二配合面53环绕换能器驱动轴纵向轴线L1分布且同换能器驱动轴纵向轴线L1形成的夹角均大于-45°且小于45°,优选大于-5°且小于5°。
如图5、图6、图11所示,手柄外壳7在沿换能器驱动轴纵向轴线L1方向上布置有八个手柄外壳配合面,分别为手柄外壳第一配合面71、手柄外壳第二配合面72、手柄外壳第三配合面73、手柄外壳第四配合面74、手柄外壳第五配合面75、手柄外壳第六配合面76、手柄外壳第七配合面77、手柄外壳第八配合面78。所述手柄外壳配合面71至78环绕换能器驱动轴纵向轴线L1分布且同换能器驱动轴纵向轴线L1形成的夹角均大于-45°且小于45°,优选大于-5°且小于5°。
如图1、图2、图5、图6、图11所示,手柄外壳第一配合面71匹配换能器左支架第一配合面22,手柄外壳第二配合面72匹配换能器右支架第一配合面32,手柄外壳第三配合面73匹配换能器左支架第二配合面23,手柄外壳第四配合面74匹配换能器右支架第二配合面33,手柄外壳第五配合面 75匹配驱动线圈左支架第一配合面42,手柄外壳第六配合面76匹配驱动线圈右支架第一配合面52,手柄外壳第七配合面77匹配驱动线圈左支架第二配合面43,手柄外壳第八配合面78匹配驱动线圈右支架第二配合面53。手柄外壳7通过自身的机械强度约束上述相互匹配的配合面紧配,致使手柄外壳7和换能器左支架2不可相对运动地联接在一起,手柄外壳7和换能器右支架3不可相对运动地联接在一起,手柄外壳7和驱动线圈左支架4不可相对运动地联接在一起,手柄外壳7和驱动线圈右支架5不可相对运动地联接在一起。综上所述,换能器弹性件固定件14和换能器左、右支架2、3通过换能器组件固定件21固联,换能器左支架2和换能器右支架3上分别布置有换能器左支架中空区域24和换能器右支架中空区域34。换能器左支架中空区域24和换能器右支架中空区域34允许换能器1中的运动部件在换能器组件中无干涉地绕换能器驱动轴纵向轴线L1或绕近似平行于换能器驱动轴纵向轴线L1的直线往复旋转。驱动线圈架61和驱动线圈左、右支架4、5通过驱动线圈组件固定件41固联。驱动线圈左支架4和驱动线圈右支架5上分别布置驱动线圈左支架中空区域44和驱动线圈右支架中空区域54。驱动线圈左支架中空区域44和驱动线圈右支架中空区域54允许换能器1中的运动部件在驱动线圈组件中无干涉地绕换能器驱动轴纵向轴线L1或绕近似平行于换能器驱动轴纵向轴线L1的直线往复旋转。固联的换能器1和换能器左、右支架2、3构成换能器组件,固联的驱动线圈架61和驱动线圈左、右支架4、5构成驱动线圈组件,驱动线圈组件和换能器组件以可相对运动的方式联接。在换能器左支架2和换能器右支架3及驱动线圈左支架4和驱动线圈右支架5上沿换能器驱动轴纵向轴线L1且环绕换能器驱动轴纵向轴线L1分布有多个配合面,例如八个配合面22、23、32、33、42、43、52、53。在手柄外壳7上沿换能器驱动轴纵向轴线L1且环绕换能器驱动轴纵向轴线L1方向分别布置有多个配合面,例如八个配合面71、72、73、74、75、76、77、78。手柄外壳7上的多个配合面,例如八个配合面71、72、73、74、75、76、77、78和换能器组件以及驱动线圈组件上的相应配合面22、32、23、33、42、52、43、53相互配合,使得手柄外壳7分别与换能器组件、驱动线圈组件紧固,因而,手柄外壳7与换能器左支架2、换能器右支架3和换能器弹性固定件14及驱动线圈左支架4、驱动线圈右支架5和驱动线圈架61以不可相对运动的方式固联。
在本发明的另一示例中,换能器左支架2和/或换能器右支架3只布置有一个环绕换能器驱动轴纵向轴线L1且同换能器驱动轴纵向轴线L1形成的夹角均大于-45°且小于45°的配合面,在手柄外壳7上对应地布置有一个和所述一个换能器左支架配合面和/或一个换能器右支架配合面紧配的手柄外壳配合面。同理,驱动线圈左支架4和/或驱动线圈右支架5只布置一个环绕换能器驱动轴纵向轴线L1且同换能器驱动轴纵向轴线L1形成的夹角均大于-45°且小于45°的配合面,在手柄外壳7上对应地布置有一个和所述的一个驱动线圈左支架配合面和/或一个驱动线圈右支架配合面紧配的手柄外壳配合面。从而可使手柄外壳7和换能器左右支架2、3及驱动线圈左右支架4、5不可相对运动地联接在一起。
下面进行动态分析。
当内置于手柄外壳7的电池在驱动线圈6上施加频率为f0的电流时,在换能器左侧和右侧永磁体18和19及通电的驱动线圈6共同作用下,换能器左侧永磁体18和换能器右侧永磁体19上分别产生大小近似相同且方向相反的力F1、F2。合理配置换能器1,比如合理配置换能器1的转动惯量和换能器弹性件15,使得换能器1以谐振方式响应频率为f0的驱动力F1、F2的作用,则可使换能器驱动轴11绕换能器驱动轴纵向轴线L1往复旋转,进而带动刷头上的清洁元件往复旋转。分别作用在换能器左侧永磁体18和换能器右侧永磁体19上的大小近似相等而方向相反的力F1、F2形成换能器驱动转矩M1,定义J为换能器1中运动部件和刷头的等效转动惯量,定义C为换能器1中运动部件和刷头的角加速度,定义M2为换能器1中运动部件和刷头在运动过程中的换能器阻尼转矩,定义M3为换能器弹性件15产生的换能器弹性转矩。由于换能器1中运动部件和刷头在由频率为f0的驱动力F1、F2形成的换能器驱动转矩M1作用下处于谐振或共振状态,依据固体力学原理知:M1=M2+M3+CJ,由于换能器1运动部件和刷头处于共振或谐振状态,则M1≈M2,所以M3≈-CJ,即换能器弹性转矩M3和转动惯性转矩CJ大小近似相等且方向相反。依据牛顿第三定理,换能器弹性件固定件14上承受来自换能器弹性件15的弹性件固定件转矩M4(图12),弹性件固定件转矩M4和换能器弹性转矩M3大小相等且方向相反,所以M4≈CJ,本实施例中,换能器弹性件固定件14与换能器左支架2和换能器右支架3固联在一起,手柄外壳7通过配合面71、72、73、74分别和换能器左右支架2、3上 的配合面22、32、23、33紧配,实现手柄外壳7与换能器左支架2和换能器右支架3固联,显然手柄外壳7受到来自弹性件固定件转矩M4的作用。
依据牛顿第三定理,驱动线圈6受到和换能器驱动转矩M1大小相等且方向相反的驱动线圈转矩M5(图12)。本实施例中,驱动线圈架61与驱动线圈左支架4和驱动线圈右支架5固联在一起,手柄外壳7通过配合面75、76、77、78分别和驱动线圈左右支架4、5上的配合面42、52、43、53紧配,实现手柄外壳7与驱动线圈左支架4和驱动线圈右支架5固联,显然手柄外壳7受到来自驱动线圈转矩M5的作用,M5=-M1。弹性件固定件转矩M4和驱动线圈转矩M5的方向相反。
如图12所示,本实施例中,手柄外壳7上的合成转矩M4+M5,即手柄外壳7上的合成转矩约为M4+M5=CJ-M1
与第一对比例的比较
在例如利用直流永磁微型电机驱动刷头的现有清洁用具中,直流永磁微型电机的转子(相当于本发明中的换能器组件)和定子(相当于本发明中的驱动线圈组件)通过机壳联接一起,电机机壳上的合成转矩为CJ电机,电机通过一系列结构被固联到手柄外壳上,因此手柄外壳上受到大小为CJ电机的转矩,CJ电机与清洁用具的输出转矩相关。假设本发明清洁用具的转矩与所述现有清洁用具的转矩相同,即CJ=CJ电机,由于本发明中创造性地将用于紧固换能器(1)的换能器支架分设为换能器左支架(2)和换能器右支架(3),将用于紧固驱动线圈(6)的驱动线圈支架分设为驱动线圈左支架(4)和驱动线圈右支架(5),并通过手柄外壳7将它们分别固联为换能器组件和驱动线圈组件,驱动线圈组件和换能器组件采用可相对运动的方式联接,使得本发明手柄外壳7上的合成转矩相对于所述现有清洁用具的手柄外壳上的合成转矩减小,减小量约等于换能器阻尼转矩M2,从而可以有效减小手柄外壳7上的振动。如上所述,本发明中,向刷头施加负载时,手柄外壳7上的合成转矩为CJ-M1,此时相比较于刷头上无负载时,手柄外壳7上的合成转矩中的CJ变小,M1变大,而CJ大于M1,所以,刷头上有负载时的合成转矩CJ-M1大大小于刷头上无负载时的合成转矩。而在现有的、用电机驱动的清洁用具中,向刷头施加负载时手柄外壳7上的合成转矩比刷头空载时手柄外壳7上的合成转矩的减小量仅为CJ电机的减小量。比较在两种清洁用具的刷头上施加相同负载与其刷头空载的情况,可以看出,本发明 中手柄外壳7的合成转矩的减小量大于现有清洁用具中的手柄外壳合成转矩的减小量。因此,无论在刷头空载或刷头负载下,本发明手柄外壳7上的合成转矩都比现有清洁用具中的手柄外壳合成转矩小。从而有效减小了手柄外壳7上的振动。
本发明中,驱动线圈组件和换能器组件可相对运动的联接方式也可以减小手柄外壳7的振动。
与第二对比例的比较
图13至15示出了第二对比例(如申请号为201510042433.8的中国专利申请)。在现有的这类电动清洁用具中,假设将换能器和驱动线圈统称为驱动装置,将换能器左支架和驱动线圈左支架不可相对运动地固联在一起或两者为一体构成的结构称之为驱动装置左支架8,将换能器右支架和驱动线圈右支架不可相对运动地固联在一起或两者为一体构成的结构称之为驱动装置右支架9,并定义通过驱动装置固定件81紧固的驱动装置左支架8和驱动装置右支架9的组合件为驱动装置机架。在此方案中,手柄外壳7通过配合面71、72、73、74、75、76、77、78分别和驱动装置左右支架8、9上的相应配合面82、93、83、92、84、95、85、94紧配,实现手柄外壳7和驱动装置机架固联,手柄外壳和驱动装置机架不可相对运动地联接在一起。该对比例中,驱动装置左支架第一配合面82和驱动装置左支架第三配合面84处于同一平面,驱动装置左支架第二配合面83和驱动装置左支架第四配合面85处于同一平面,驱动装置右支架第一配合面92和驱动装置右支架第三配合面94处于同一平面,驱动装置右支架第二配合面93和驱动装置右支架第四配合面95处于同一平面。在实际生产中,如果两个零件的紧配面积较大,实际上只有多个点或多个分散的配合区域紧配在一起,也就是说驱动装置机架只有多个点或多个配合区域被手柄外壳固定。一般而言,被手柄外壳固定的驱动装置机架在静态外力或静态外加力矩的作用下会产生附加形变。依照固体力学原理,在具有相同横截面形状的中空长方体或圆柱体或圆环体上施加相同的力偶,中空长方体或圆柱体或圆环体的扭转角与中空长方体或圆柱体或圆环体在力偶矢量方向上的长度成正比。即中空长方体或圆柱体或圆环体在力偶矢量方向上的长度越大,则扭转角越大。显然在相同的静态外加力偶下,中空长方体或圆柱体或圆环体的扭转角越大,则它们的振动振幅越大,中空长方体或圆柱体或圆环体传递给它们各自的固定件的振动振幅也越大。
本发明中,换能器1在频率为f0的交变的换能器驱动转矩M1的作用下处于谐振状态。本发明实施例中的驱动线圈机架和换能器机架的形状与第二对比例中的驱动装置机架类似,大体为中空长方体,显然,本发明实施例和第二对比例中的驱动线圈机架、换能器机架、驱动装置机架均受到频率为f0的交变的转矩的作用。驱动线圈机架包括固联的驱动线圈左支架4和驱动线圈右支架5,驱动线圈机架用于固定驱动线圈6,致使驱动线圈6在受到交变的外力和/或外加力偶的作用时不产生位移。依固体力学原理,为了使驱动线圈机架在交变的外力和/或外加力偶的作用下不处于谐振状态,以便可靠固定驱动线圈6,驱动线圈机架的固有频率应大大地大于交变外力和/或外加力偶的频率。驱动线圈机架的固有频率越接近交变外力和/或外加力偶的频率,则驱动线圈机架动态力的振幅比静态力的振幅的放大倍数越大,共振时,驱动线圈机架动态力的振幅比静态力的振幅的放大倍数达到最大值。依固体力学原理,驱动线圈机架在垂直于换能器驱动轴纵向轴线L1的横截面形状几乎不变时,驱动线圈机架在力偶矢量方向上的长度越小,则驱动线圈机架的固有频率越大。在本发明的实施例中,施加在驱动线圈机架上的主要力偶的矢量方向近似平行于换能器驱动轴纵向轴线L1,因此,驱动线圈机架沿换能器驱动轴纵向轴线L1方向上的长度越短,则驱动线圈机架的固有频率越大,进而驱动线圈机架上动态力的振幅与静态力的振幅之比的放大倍数越小,而驱动线圈机架动态力的振幅越小,手柄外壳7上的动态力的振幅也越小。
同样,在所述实施例中,换能器机架在垂直于换能器驱动轴纵向轴线L1的横截面形状几乎不变时,换能器机架沿驱动轴纵向轴线L1方向上的长度越短,则换能器机架固有频率越大,换能器机架动态力的振幅与静态力的振幅之比的放大倍数越小,而换能器机架动态力的振幅越小,手柄外壳7上的动态力的振幅也越小。
本发明中,施加在驱动装置机架或换能器机架或驱动线圈机架上的动态力偶的矢量方向基本平行于换能器驱动轴纵向轴线L1,两者夹角介于-10°至10°,优选为0°。
本发明中,驱动线圈组件和换能器组件采用可相对运动的方式联接,驱动线圈组件和换能器组件类似于中空长方体,但驱动线圈组件或换能器组件在力偶矢量方向上的长度小于固联在一起的驱动线圈组件和换能器组件在力偶矢量方向上的长度(即第二对比例的结构),因而在相同交变的力偶的 作用下,驱动线圈组件或换能器组件的振幅远小于固联在一起的驱动线圈组件和换能器组件(驱动装置机架)的振幅,从而手柄外壳受到的振幅也小,因此本发明创造性地引入可相对运动联接的驱动线圈组件和换能器组件,手柄外壳和驱动线圈组件固联,手柄外壳和换能器组件固联,从而可有效减小手柄外壳的振动。
显然,以上描述只是示例性的,在不超出本发明的由权利要求所限定的范围的前提下,所属领域技术人员还可以作出多种变换和改型,这些变换和改型均应落入本发明的由权利要求所限定的范围。
例如,本发明中的换能器并不局限于上述结构。换能器可以包括至少一个在同一端面上同时拥有不同磁极的永磁体。
此外,也可以采用其它方式(如粘结、超声波焊接等)和/或通过换能器组件固定件固联换能器弹性件固定件和换能器左、右支架;采用其它方式(如粘结、超声波焊接等)和/或通过驱动线圈组件固定件固联驱动线圈架和驱动线圈左、右支架;采用其它方式(如粘结、超声波焊接等)和/或通过驱动线圈组件固定件固联驱动线圈和驱动线圈左、右支架等。
所述配合面可以为任何适于紧配的形状,优选为平面。
将本发明应用于本申请人提交的申请号为201510042433.8的发明专利申请所披露的那类个人清洁护理用具尤其有利。

Claims (9)

  1. 一种用于电动清洁用具驱动装置的固定结构,电动清洁用具包括手柄外壳(7)和置于手柄外壳(7)内的驱动装置,驱动装置包括换能器组件和驱动线圈组件,换能器组件包括换能器、换能器支架及换能器组件固定部,驱动线圈组件包括驱动线圈、驱动线圈支架及驱动线圈组件固定部,所述换能器(1)包括插入清洁组件的换能器驱动轴(11)、至少一个换能器弹性件(15)、至少一个紧固换能器弹性件(15)的换能器弹性件固定件(14)、以及至少两个永磁体(18、19),所述永磁体(18、19)在朝向驱动线圈(6)方向的磁极极性相反,它们既可相对于换能器弹性件固定件(14)移动也可相对于驱动线圈(6)移动,当驱动线圈(6)通过频率为f0的交变电流时,所述永磁体(18、19)和通过频率为f0的交变电流的驱动线圈(6)之间产生的电磁力驱动换能器(1)谐振,
    其中,所述换能器支架包括彼此分离设置的换能器左支架(2)和换能器右支架(3),换能器(1)与换能器左支架(2)和换能器右支架(3)相互固定连接,所述驱动线圈支架包括彼此分离设置的驱动线圈左支架(4)和驱动线圈右支架(5),驱动线圈(6)与驱动线圈左支架(4)和驱动线圈右支架(5)相互固定连接,所述驱动线圈左支架(4)和驱动线圈右支架(5)上分别布置有驱动线圈左支架中空区域(44)和驱动线圈右支架中空区域(54),驱动线圈左、右支架中空区域(44、54)允许换能器(1)中的运动部件在驱动线圈组件中无干涉地绕换能器驱动轴纵向轴线(L1)或绕近似平行于换能器驱动轴纵向轴线(L1)的直线往复旋转;其中,所述手柄外壳(7)和换能器组件通过第一结构特征部彼此不可相对运动地紧固,且手柄外壳(7)和驱动线圈组件通过第二结构特征部彼此不可相对运动地紧固;其中,所述换能器组件和驱动线圈组件通过第三结构特征部可以彼此面向地接触或分离地相对运动地联结。
  2. 如权利要求1所述的固定结构,其中,所述第一结构特征部为在所述换能器左支架(2)和/或换能器右支架(3)上分别设置的与换能器驱动轴纵向轴线(L1)形成夹角的至少一个配合面,以及沿换能器驱动轴纵向轴线(L1)方向对应地在手柄外壳(7)上设置的与之相配的配合面。
  3. 如权利要求1所述的固定结构,其中,所述第二构特征部为在所述 驱动线圈左支架(4)和/或驱动线圈右支架(5)上分别设置的与换能器驱动轴纵向轴线(L1)形成夹角的至少一个配合面,以及沿换能器驱动轴纵向轴线(L1)方向对应地在手柄外壳(7)上设置的与之相配的配合面。
  4. 如权利要求1所述的固定结构,其中,所述第三结构特征部为分别在驱动线圈左、右支架(5、4)上沿换能器驱动轴纵向轴线(L1)靠近刷头的顶端布置的至少一个配合面(45,46,55,56)以及在换能器左、右支架(2、3)上设置的与之相配的配合面(25,26,35,36)。
  5. 如权利要求1至4中任一项所述的固定结构,其中,所述换能器左支架(2)和换能器右支架(3)对称地分离设置。
  6. 如权利要求1至4中任一项所述的固定结构,其中,所述驱动线圈左支架(4)和驱动线圈右支架(5)对称地分离设置。
  7. 如权利要求2或3所述的固定结构,其中,所述夹角大于-45°且小于45°。
  8. 如权利要求7所述的固定结构,其中,所述夹角大于-5°且小于5°。
  9. 如权利要求2至4中任一项所述的固定结构,其中,所述配合面为平面。
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