WO2020098270A1 - 电动手柄、电动牙刷及电动清洁刷 - Google Patents

电动手柄、电动牙刷及电动清洁刷 Download PDF

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Publication number
WO2020098270A1
WO2020098270A1 PCT/CN2019/091859 CN2019091859W WO2020098270A1 WO 2020098270 A1 WO2020098270 A1 WO 2020098270A1 CN 2019091859 W CN2019091859 W CN 2019091859W WO 2020098270 A1 WO2020098270 A1 WO 2020098270A1
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WO
WIPO (PCT)
Prior art keywords
swing motor
swing
electric
vibration
housing
Prior art date
Application number
PCT/CN2019/091859
Other languages
English (en)
French (fr)
Inventor
胡斐凡
胡建坤
Original Assignee
胡斐凡
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 胡斐凡 filed Critical 胡斐凡
Priority to CN201980088807.6A priority Critical patent/CN113365575B/zh
Publication of WO2020098270A1 publication Critical patent/WO2020098270A1/zh
Priority to US17/406,060 priority patent/US20210386535A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3418—Rotation around the axis of the toothbrush handle
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
    • A46B15/0004—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/225—Handles or details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the utility model belongs to the technical field of cleaning brushes, in particular to an electric handle, an electric toothbrush and an electric cleaning brush.
  • the electric toothbrush is usually composed of two parts, including an electric handle and a toothbrush head.
  • the electric handle is the key.
  • the electric handle generally includes a housing, a back cover, a swing motor and a main control structure; the swing motor is connected to the main control structure and the main control
  • the control circuit board and battery are installed on the structure; when the swing motor drives the toothbrush head to swing, it will cause the main control structure and the handle to swing.
  • the main control structure swings greatly, it will have an adverse effect on the control circuit board and the battery, such as the electrical connection of the electronic components on the circuit board is loose; the swing of the handle is too large, and the user feels uncomfortable when using it.
  • the swing amplitude output to the toothbrush head is reduced, and the cleaning effect of the electric toothbrush is deteriorated.
  • the purpose of the utility model is to provide an electric handle, an electric toothbrush and an electric cleaning brush, aiming to solve the problems of existing electric handles that need to reduce the useless swing and enhance the beneficial swing from the root cause.
  • the utility model provides an electric handle, including a housing, a back cover, a swing motor and a main control structure; an installation cavity is formed in the housing and the back cover, the swing motor and the The main control structure is serially installed in the installation cavity; the swing motor is provided with an output shaft, and the output shaft of the swing motor extends from the front end of the housing; the main control structure includes a main body bracket and A battery and a control circuit board installed on the main body bracket; the main body bracket is snapped on the inner wall of the casing;
  • a gap is formed between the swing motor and the inner wall of the housing, and a vibration adjusting mass body is arranged at the gap, and the vibration adjusting mass body is fixed on the casing of the swing motor, the The vibration adjusting mass body does not contact the inner wall of the housing.
  • the front end of the swing motor is provided with a sealing top ring and an elastic sealing ring, and the elastic sealing ring tightly sleeved on the output shaft is pressed by the sealing top ring to press the elastic sealing ring against the
  • the front end of the housing; the tail end of the swing motor is installed on the main body bracket through an elastic shock-absorbing pad sleeved thereon.
  • the vibration-adjusting mass body is provided as one or more pieces, is in the shape of a flat plate, and is installed and fixed on the casing of the swing motor corresponding to the gap.
  • the vibration-adjusting mass body is arranged in a semi-wrapped shape and fixed on the housing on the swing motor corresponding to the gap.
  • the vibration-adjusting mass body which is semi-wrapped along the casing of the swing motor, is used to increase the surface area of the vibration-adjusting mass body.
  • the thickness of the vibration-adjusting mass body is correspondingly reduced, and the space for the installation gap is also reduced Claim.
  • the casing of the swing motor has a concave part, and a conformal vibration-control mass body is fixedly installed at the concave part, and the conformal vibration-control mass body matches the longitudinal outline of the swing motor.
  • the swing motor is installed in the housing at a certain tilt angle so that the axis line of the swing motor deviates from the centerline of the electric handle, and the place where the swing motor deviates from the centerline of the electric handle
  • the gap increases, and the vibration-adjusting mass body is installed on the casing of the swing motor corresponding to the gap here.
  • the oblique installation of the swing motor increases the gap, making it easier to install the vibration-adjusting mass.
  • the purpose of setting the vibration-adjusting mass body is to increase the rotational inertia of the swing motor stator by installing a limited-mass vibration-adjusting mass body, so that the swing amplitude of the swing motor housing is reduced, which also makes it The swing amplitude transmitted to the control circuit board, battery and electric handle is reduced, and the user's hand grip is reduced and the feel is more comfortable; at the same time, the effective swing amplitude of the swing motor output is increased, making the toothbrush head or The swing of the cleaning brush head increases, and the cleaning effect is better. In this way, the swing amplitude of the swing motor stator is reduced from the root, and the swing motor design is more free.
  • the electric handle can also be designed to be lighter, which makes the handshake feel more comfortable and more comfortable. Lightweight and lower costs. That is, in different applications, even if the load is different, the rotor's rotational inertia is different, but the same kind of swing motor can be used, and only the vibration adjustment mass body needs to be adjusted, so that the swing amplitude of the swing motor casing does not increase, and the swing motor output is effective The swing amplitude does not decrease. In other words, the design of the electric handle can be used to drive the load with a small-sized and light-weight swing motor.
  • the handle can also be designed to be lighter, It is lighter to hold.
  • Swing Swing Swing This embodiment also provides an electric toothbrush, including the above-mentioned electric handle and toothbrush head, wherein the toothbrush head is inserted on the output shaft of the swing motor.
  • the electric toothbrush of this embodiment adopts the above-mentioned electric handle, by installing a limited-mass vibration-adjusting mass body on the casing of the swing motor, the swing amplitude of the swing motor housing is reduced from the source, and it is also transmitted to the control
  • the swing amplitude of the circuit board, battery and electric handle shell is reduced, the user's hand grip is reduced, and the effective swing amplitude of the swing motor output is increased, which enhances the beneficial swing of the toothbrush head and the brushing effect is better;
  • the handle can Lightweight design makes brushing feel more comfortable and lightweight, and also reduces manufacturing costs.
  • a small size and light weight swing motor can be used, which is more free to install and can be tilted according to needs, making the toothbrush head tilt, ergonomic, brushing teeth more smoothly, and making the handle rotation inertia greater, further reducing the Vibration of the handle.
  • This embodiment also provides an electric cleaning brush, including the above-mentioned electric handle and a cleaning brush head, wherein the cleaning brush head is inserted on the output shaft of the swing motor.
  • the vibration amplitude body of limited mass is installed on the casing of the swing motor, which reduces the swing amplitude of the swing motor casing from the root cause and also transfers it to the
  • the swing amplitude of the control circuit board, battery and electric handle shell is reduced, the user's grip is reduced, and the effective swing amplitude of the swing motor output is increased, which enhances the beneficial swing of the cleaning brush head, the cleaning effect is better, and the feel It is more comfortable and reduces manufacturing costs.
  • FIG. 1 is a schematic structural view of an electric handle provided by an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of an assembly component of a swing motor provided by an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a vibration-adjusting mass body provided by an embodiment of the present invention.
  • FIG. 4 is another schematic structural view of a vibration-adjusting mass body provided by an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an electric toothbrush provided by an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a conformal vibration-modulating mass provided by an embodiment of the present invention.
  • FIG. 1 to 6 it is a preferred embodiment provided by the present invention.
  • the purpose is to specifically explain and explain the electric handle protected by the present invention.
  • the best application method of the electric handle is to apply it to an electric toothbrush. Therefore, the electric toothbrush is mainly taken as an example and explained in combination with the electric handle.
  • the toothbrush head can also be replaced with a cleaning brush head. In this way, the cleaning brush head combined with the electric handle to form an electric cleaning brush is also the main body we want to protect.
  • a component when referred to as being “fixed” or “set on” another component, it may be directly on another component or there may be a centered component at the same time.
  • a component When a component is said to be “connected to” another component, it may be directly connected to another component or may be centered at the same time.
  • left, right, up, and down in this embodiment are only relative concepts or refer to the normal use status of the product, and should not be considered as limiting.
  • This embodiment will specifically explain the electric handle and the electric toothbrush using the electric handle.
  • the swing of the housing 110 of the electric handle 10 and the swing output to the toothbrush head 210 all come from the swing motor 120.
  • the structure of the swing motor 120 is publicly known, including a stator and a rotor, and an output shaft is generally provided on the rotor, and the swing is output from the output shaft.
  • the electric handle 10 provided in this embodiment has the same communication with the conventional electric handle as follows: it includes a housing 110, a rear cover 111, a swing motor 120, and a main control structure 130; the housing 110 and An installation cavity is formed in the rear cover 111, and the swing motor 120 and the main control structure 130 are serially installed in the installation cavity; the swing motor 120 is provided with an output shaft 121, and the output shaft 121 of the swing motor 120 extends from the front end of the housing 110
  • the main control structure 130 includes a main body bracket 131 and a battery 132 and a control circuit board 133 mounted on the main body bracket 131; the main body bracket 131 is snapped on the inner wall of the housing 110.
  • ⁇ is the angular velocity of the rotor
  • the swing motor is energized and the rotor generates an electromagnetic reaction force to the stator. Ideally:
  • the stator of the swing motor 120 is usually installed and connected to the main control structure 130 through the elastic damping pad 140.
  • the quality of the stator is limited.
  • the rotor swings, under the electromagnetic reaction force, it will swing opposite to the main control structure 130; the swing amplitude of the rotor relative to the stator remains unchanged, and the swing amplitude of the rotor decreases relative to the main control structure 130 small.
  • the swing of the stator acts on the main control structure 130 through the elastic damping pad 140.
  • the swing amplitude of the stator When the swing amplitude of the stator is large, the swing amplitude of the main control structure 130 becomes larger, which is disadvantageous to the main control structure 130 in some applications
  • the electronic components on the main control structure 130 are loosened or fatigue-damaged, the swing of the swing motor housing is a useless vibration, and the swing of the electric handle caused by the swing motor is also a useless vibration that affects the feel.
  • the moment of inertia is related to the mass and its distance from the center of the motor shaft. Once the swing motor is formed, it is obviously no longer possible to change its structure.
  • the moment of inertia of the stator is a fixed value, but A vibration-adjusting mass body far from the center of the motor shaft can be added to the stator or the swing motor casing to increase the stator's rotational inertia, the angular acceleration of the stator decreases, and the swing amplitude of the stator also decreases.
  • the swing amplitude of the stator is reduced relative to the main control structure 130, which reduces the swing amplitude transmitted from the housing to the main control structure 130, and also increases the swing amplitude of the rotor.
  • the swing amplitude of the swing motor stator is reduced from the source, and the swing motor design is more free. If the swing motor is designed to be small in size and light in weight, the rotational inertia of the stator is small, and the swing during operation is large. With this embodiment, the swing motor is designed to be lighter and smaller without considering the inertia of the stator. ,reduce costs.
  • the fixing of the vibration-adjusting mass body 160 it can be carried out in various ways, such as pasting with an adhesive, or fixing with a fastener, or by embedding in the groove, forming a groove in the casing of the swing motor in advance,
  • the vibration adjusting mass body 160 is embedded and fixed, or welded to the surface of the swing motor, or any other fixable method, as long as the result can withstand the swing of the swing motor without falling off.
  • the purpose of providing the vibration-adjusting mass body 160 is to increase the rotational inertia of the stator of the swing motor 120.
  • the swing motor 120 is reduced from the source
  • the swing amplitude of the housing reduces the swing amplitude transmitted to the control circuit board 133, the battery 132, and the housing 110, and the user's hand grip is reduced and the brushing feel is more comfortable; it also makes the swing motor 120 output an effective swing amplitude Increased and enhanced the brushing effect.
  • neither the swing motor 120 nor the adjusting mass 160 directly contacts the inner wall of the housing 110 of the electric handle 10, and the swing on the swing motor 120 is not directly transmitted to the housing 110.
  • the front end of the swing motor 120 is covered with a sealing top ring 122,
  • the elastic seal ring 123 tightly sleeved on the output shaft 121 is sealed by the sealing top ring 122, and the elastic seal ring 123 is pressed against the front end of the inner wall of the housing 110; the tail end 124 of the swing motor 120 is damped by the elastic sleeve sleeve
  • the pad 140 is mounted on the main body bracket 131. In this way, the swing motor 120 is elastically supported in the housing 110 through its front and rear ends, and forms a gap 150 with the inner wall of the housing in the axial direction.
  • the vibration-adjusting mass body 160 is made of one or more pieces, has a flat plate shape, and is installed and fixed on the swing motor 120 On the shell. Specifically, a flat plate-shaped vibration adjusting mass body 160 may be provided at a position with a sufficient gap in the circumferential direction of the casing of the swing motor 120. The selection of the specific quantity of the vibration-control mass body 160 depends on the quality of the vibration-control mass body required. For example, one or two flat vibration-control masses 160 that are adapted to the side surfaces of the swing motor 120 are mounted on one or two of the upper and lower sides.
  • the vibration-controlling mass body 160 is arranged to be fixed in a semi-wrapped shape on the housing on the swing motor 120 at a position with sufficient clearance.
  • the use of a vibration damping mass body 160 of a limited mass that is semi-wrapped along the casing of the oscillating motor increases the surface area of the vibration tuning mass body 160, and accordingly reduces the thickness of the vibration tuning mass body 160, which reduces the installation
  • the space requirement of the gap 150, the handle can be designed smaller.
  • the vibration-adjusting mass body 160 can be stamped and formed from a thin steel plate, which is easy to manufacture.
  • a conformal vibration-control mass body 161 can also be fixedly installed at the recess 125 Matches the longitudinal outline of the swing motor 120. In this way, the conformal vibration-control mass body 161 can fill the concave portion 125 of the longitudinal profile of the casing while reducing the swing amplitude of the casing of the swing motor 120, so that the longitudinal profile of the casing is smoother and has a shape-preserving effect. It is easier to install the swing motor 120 in the installation cavity.
  • a flat plate-shaped vibration-adjusting mass body 160 and a fixed shape-retaining shape at the concave portion 125 may be provided on the casing of the swing motor 120 at the same time ⁇ ⁇ ⁇ ⁇ 161.
  • the vibration-adjusting mass body 160 can be formed by stamping and cutting from a steel plate, which has low cost and is easy to manufacture; Zinc alloy die casting.
  • the specific material selection of the vibration-controlling mass body 160 and the conformal vibration-controlling mass body 161 is not limited to this, as long as it satisfies a metal or alloy material that is easy to cut and form, easy to manufacture, and easy to recycle.
  • the swing motor 120 is installed in the housing 110 at a certain tilt angle, so that the motor axis 180 of the swing motor 120 deviates from the handle centerline 170 of the electric handle 10, and the gap 150 where the swing motor 120 deviates from the handle centerline 170 Increased, the vibration-adjusting mass body 160 is mounted on the housing of the swing motor 120 corresponding to the gap 150 here.
  • the tilting installation of the swing motor 120 makes the gap 150 larger, which makes it easier to install the vibration-adjusting mass body, and also makes the electric handle 10 deviate from the motor axis 180.
  • the deviation of the electric handle 10 The increase in the moment of inertia further reduces the swing amplitude of the electric handle 10.
  • the head of the toothbrush is also tilted, which is ergonomic and makes brushing easier.
  • the applicant also tested the scheme without adding the vibration adjusting mass body 160 and after adding the vibration adjusting mass body 160.
  • the toothbrush head 210 is attached to the swing motor 120 as a load.
  • the motor end 124 and the elastic shock absorber 140 are connected to the main body bracket 131.
  • the circuit board 133 and the battery 132 are mounted on the main body bracket 131.
  • the front end of the swing motor 120 is supported by an elastic body With the rear end of the main body bracket, the swing motor 120 is driven to swing with a drive circuit of 30800 swings / minute.
  • Engraved lines on the toothbrush head 210 are used to indicate changes in the swing amplitude of the brush head load, and rigid pointers are respectively fixed on the casing of the swing motor 120 and the circuit board to indicate the swing amplitude of the casing of the swing motor 120 and the circuit board. (The pointing device does not consider its distance to the swing center)
  • the load of the brush head in Table 1 indicates the swing amplitude.
  • the load amplitude of the brush head of experiment scheme 2 and experiment scheme 3 is obviously larger than that of experiment scheme 1; while the swing amplitude of the motor casing of experiment scheme 2 and experiment scheme 3 is much smaller than that of experiment 1
  • the swing amplitude, and the experimental scheme 3 indicates that the swing amplitude is smaller than the motor casing of the experimental scheme 2.
  • the relatively large mass of the vibration-adjusting mass can increase the effective swing output of the swing motor and can also reduce the useless swing output from the swing motor casing.
  • the circuit board indicates that the swing amplitude is relatively small, indicating that the vibration damping effect of the elastic damping pad 140 is obvious. But because the fixed platform in the experiment is equivalent to the shell of the electric handle, its quality is much larger than that of the shell of the electric handle, so the circuit board indicates a small swing, and the experiment is only to verify the principle and effect. The swing of the real electric handle and circuit board will be greater than the experimental data.
  • this embodiment also provides an electric toothbrush 20 including the above-mentioned electric handle 10 and toothbrush head 210, wherein the toothbrush head 210 is inserted on the output shaft 121 of the swing motor 120.
  • the vibration amplitude body 160 of a limited mass is installed on the casing of the swing motor 120, so that the swing amplitude of the casing 110 of the swing motor 120 is reduced, which also makes it
  • the swing amplitude transmitted to the control circuit board 133, the battery 132, and the housing 110 is reduced, the user's hand grip is reduced, and the effective swing amplitude output by the swing motor 120 is increased, the favorable swing transmitted to the toothbrush head 210 is strengthened, and the handle
  • the vibration damping effect is better, the brushing feels more comfortable, and the brushing effect is better. Therefore, a small size and light weight swing motor can be used, which is more free to install and can be tilted as required.
  • the toothbrush head is tilted, which is ergonomic, brushing teeth is more convenient, and the rotational inertia of the handle is more Larger, further reducing the vibration of the handle; the handle can also be designed to be smaller and lighter to hold.
  • This embodiment also provides an electric cleaning brush, including the above-mentioned electric handle 10 and a cleaning brush head, wherein the cleaning brush head is inserted on the output shaft 121 of the swing motor 120.
  • the vibration amplitude mass body 160 of a limited mass is installed on the casing of the swing motor 120, so that the swing amplitude of the casing 110 of the swing motor 120 is reduced, and the transmission is also transmitted.
  • the swing amplitude to the control circuit board 133, battery 132 and the upper housing 110 of the electric handle 10 is reduced, the user's grip feeling is reduced, and the effective swing amplitude output by the swing motor 120 is increased, which enhances the beneficial swing of the cleaning brush head ,
  • the handle has better vibration damping effect and better cleaning effect.
  • the electric cleaning brush drives the bristles to rapidly swing, which can conveniently clean cups, fruits and other items.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)

Abstract

一种电动手柄（10）、电动牙刷（20）及电动清洁刷，电动手柄（10）包括壳体（110）、后盖（111）、摆动电机（120）和主控结构（130）；电动手柄（10）中，通过安装有限质量的调振质量体（160），增加摆动电机（120）的定子的转动惯量，使得摆动电机（120）的壳体的摆动幅度减小，也使得其传递到控制线路板（133）、电池（132）以及电动手柄（10）上的摆动幅度减小，使用者的手握震感降低，使摆动电机（10）的输出轴（121）尽可能多的传递有效摆动输出，以传递给安装在输出轴（121）上的牙刷头（210）或者清洁刷头，清洁效果更好，手柄（10）减振效果更佳，使用时手感更舒适，也降低了制造成本。

Description

电动手柄、电动牙刷及电动清洁刷 技术领域
本实用新型属于清洁刷的技术领域，尤其涉及电动手柄、电动牙刷及电动清洁刷。
背景技术
目前，电动牙刷通常由两部分组成，包括电动手柄和牙刷头，电动手柄是关键，电动手柄一般包括壳体、后盖、摆动电机和主控结构；摆动电机连接在主控结构上，主控结构上安装有控制线路板和电池；由于摆动电机在带动牙刷头摆动时，会引起主控结构及手柄的摆动。主控结构摆动大时，会对控制线路板和电池带来不利的影响，如线路板上的电子元器件电连接松动；手柄的摆动太大，用户使用时有震感而不舒适，同时也会使得输出给牙刷头的摆动幅度减小，使得电动牙刷的清洁效果变差。
为减少控制线路板和电池的摆动，并尽量使得壳体的摆动减小，使用户感受更舒适，一般通过在手柄壳体内设置减振弹性件来解决，比如，在摆动电机和主体支架之间安装弹性减振件，在摆动电机和壳体间安装弹性减振件使得摆动电机传递出的摆动减小，但不是从根源上减少无益的摆动，增强有益的摆动。
实用新型内容
本实用新型的目的在于提供电动手柄、电动牙刷及电动清洁刷，旨在从根源上解决现有电动手柄所存在需要减小无益的摆动，增强有益的摆动的问题。
为解决上述技术问题，本实用新型提供了电动手柄，包括壳体、后盖、摆动电机和主控结构；所述壳体和所述后盖内形成安装空腔，所述摆动电机和所 述主控结构前后串装于所述安装空腔内；所述摆动电机上设有输出轴，所述摆动电机的输出轴从所述壳体的前端伸出；所述主控结构包括主体支架及安装于所述主体支架上的电池和控制线路板；所述主体支架卡接在所述壳体内壁上；
其中，所述摆动电机与所述壳体的内壁之间形成有间隙，在所述间隙处布置有调振质量体，且所述调振质量体固定在所述摆动电机的外壳上，所述调振质量体不与所述壳体内壁接触。
进一步地，所述摆动电机的前端套有密封顶环和弹性密封圈，通过所述密封顶环顶紧套在所述输出轴上的弹性密封圈，将所述弹性密封圈顶压在所述壳体的前端；所述摆动电机的尾端通过套在其上的弹性减震垫安装在所述主体支架上。
进一步地，所述调振质量体设为一件或多件，形状为平板状，并安装固定在所述间隙对应的所述摆动电机的外壳上。
进一步地，所述调振质量体设置为呈半包裹状固定在所述间隙对应的所述摆动电机上的外壳上。采用沿摆动电机外壳呈半包裹状的调振质量体，增大了调振质量体的表面积，同样质量时相应地就减少了调振质量体的厚度，也就降低了对安装的间隙的空间要求。
进一步地，所述摆动电机的外壳上有凹陷部位，在所述凹陷部位处固定安装有保形调振质量体，所述保形调振质量体与所述摆动电机的纵向外形轮廓匹配。
进一步地，所述摆动电机以一定倾斜角度安装于所述壳体内，使得所述摆动电机的轴心线偏离所述电动手柄的中心线，所述摆动电机偏离电动手柄中心线的地方的所述间隙增大，所述调振质量体安装于对应此处间隙的所述摆动电机的外壳上。摆动电机倾斜安装使得间隙增大，更方便安装调振质量体。
本实用新型提供的电动手柄的有益效果：
本实用新型提供的电动手柄中，其设置调振质量体的目的，在于通过安装有限质量的调振质量体，增加摆动电机定子的转动惯量，使得摆动电机外壳的 摆动幅度减小，也使得其传递到控制线路板、电池以及电动手柄上的摆动幅度减小，使用者的手握震感降低，手感更舒适；同时使摆动电机输出的有效摆动幅度增加，使得安装在输出轴上的牙刷头或清洁刷头的摆动幅度增加，清洁效果更好。这样，从根源上减小了摆动电机定子的摆动幅度，也使得摆动电机设计更自由，不用考虑定子的惯量，做得轻小些，同样，电动手柄也可做轻便设计，把握手感更舒适更轻巧，也降低了成本。即在不同的应用中，即使负载不同，转子的转动惯量不一样，但可用同一种摆动电机，只需调整调振质量体，就会使得摆动电机外壳的摆动幅度不增加，摆动电机输出的有效摆动幅度不减小。也就是说，使得电动手柄的设计，可以用尺寸小，重量轻的摆动电机来驱动负载，只需要安装合适的调振质量体，就可以抑制不利的摆动，加强有利的摆动；同时，摆动电机尺寸小，有更多的间隙，又更适合安装调振质量体；也使得摆动电机的安装更加自由，可根据需要倾斜安装，进一步减小了手柄的振动；手柄也可以设计得轻小些，手握更加轻便。
摆动摆动摆动本实施例还提供了一种电动牙刷，包括上述电动手柄及牙刷头，其中，所述牙刷头插装在所述摆动电机的输出轴上。
本实用新型提供的电动牙刷的有益效果：
由于本实施例电动牙刷采用了上述电动手柄，其通过于摆动电机的外壳上安装有限质量的调振质量体，从根源上使得摆动电机壳体的摆动幅度减小，也使得其传递到控制线路板、电池以及电动手柄壳体的摆动幅度减小，使用者的手握震感降低，并使摆动电机输出的有效摆动幅度增加，加强了牙刷头的有利摆动，刷牙效果更好；手柄可以做轻便设计，刷牙手感更舒适更轻巧，也降低了制造成本。由此可以采用尺寸小，重量轻的摆动电机，其安装更加自由，可根据需要倾斜安装，使得牙刷头倾斜，符合人体工程学，刷牙更顺手，也使得手柄转动惯量更大，进一步减小了手柄的振动。
本实施例还提供了一种电动清洁刷，包括上述电动手柄及清洁刷头，其中，所述清洁刷头插装在所述摆动电机的输出轴上。
本实用新型提供的电动清洁刷的有益效果：
由于本实施例电动清洁刷采用了上述电动手柄，其通过于摆动电机的外壳上安装有限质量的调振质量体，从根源上使得摆动电机壳体的摆动幅度减小，也使得其传递到控制线路板、电池以及电动手柄壳体的摆动幅度减小，使用者的手握震感降低，并使摆动电机输出的有效摆动幅度增加，加强了清洁刷头的有利摆动，清洁效果更好，手感更舒适，也降低了制造成本。
附图说明
图1是本实用新型实施例提供的电动手柄的结构示意图；
图2是本实用新型实施例提供的摆动电机组装部件的立体分解图；
图3是本实用新型实施例提供的调振质量体的结构示意图；
图4是本实用新型实施例提供的调振质量体另一结构示意图；
图5是本实用新型实施例提供的电动牙刷的结构示意图；
图6是本实用新型实施例提供的保形调振质量体的结构示意图。
附图标记说明：
10 电动手柄 124 尾端 150 间隙
110 壳体 125 凹陷部位 160 调振质量体
111 后盖 130 主控结构 161 保形调振质量体
120 摆动电机 131 主体支架 170 手柄中心线
121 输出轴 132 电池 180 电机轴心线
122 密封顶环 133 控制线路板 20 电动牙刷
123 弹性密封圈 140 弹性减震垫 210 牙刷头
具体实施方式
为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体 实施例仅仅用以解释本实用新型，并不用于限定本实用新型。
如图1～6所示，为本实用新型提供的较佳实施例。目的在于对本实用新型保护的电动手柄进行具体解释说明，该电动手柄最好的应用方式是应用在电动牙刷中，因此，下边主要以电动牙刷为例，结合电动手柄进行具体解释说明。但除作为刷牙使用的电动牙刷外，其也可将牙刷头替换为清洁刷头，如此，清洁刷头结合该电动手柄，形成电动清洁刷也是我们想要保护的主体。
需要说明的是，当部件被称为“固定于”或“设置于”另一个部件，它可以直接在另一个部件上或者可能同时存在居中部件。当一个部件被称为是“连接于”另一个部件，它可以是直接连接到另一个部件或者可能同时存在居中部件。
还需要说明的是，本实施例中的左、右、上、下等方位用语，仅是互为相对概念或是以产品的正常使用状态为参考的，而不应该认为是具有限制性的。
本实施例将对电动手柄及应用该电动手柄的电动牙刷进行具体解释说明。
申请人此前在对发明人研发的摆动电机进行进一步研发及应用的过程中发现，发明人已获得专利权保护的摆动电机，尺寸小，重量轻，应用在电动牙刷中，有着非常好的刷牙效果，可降低其成本。研发过程中，发现有进一步改进的空间，本申请便是进一步改进的成果之一。申请人研发过程中的其中迫切需要解决的问题，便是如何有效降低手柄壳体的摆幅，并使牙刷头的摆动加强，以及减小控制线路板部分和电池的有害摆动，经多次试验及理论验证，均解决了上述问题，达到了研发的目的。
为使本领域技术人员理解本发明的思路，我们将从理论分析和应用研究的思路为您讲解。我们发现，电动手柄10壳体110的摆动以及输出给牙刷头210的摆动，均来自于摆动电机120。目前，摆动电机120的结构为公众所知，包括定子和转子，转子上一般设有输出轴，从该输出轴上输出摆动。
如图1和图2所示，本实施例提供的电动手柄10，与传统电动手柄有相通之处如下：包括壳体110、后盖111、摆动电机120和主控结构130；壳体110和后盖111内形成安装空腔，摆动电机120和主控结构130前后串装于安装空 腔内；摆动电机120上设有输出轴121，摆动电机120的输出轴121从壳体110的前端伸出；主控结构130包括主体支架131及安装于主体支架131上的电池132和控制线路板133；主体支架131卡接在壳体110内壁上。
其中，需要说明的是，在本实施例采用的摆动电机120中：
转子的转动惯量：J 转子＝Σm ir i 2；(1)r i是转子质点m i到转轴中心的距离；
转子的动能：
Figure PCTCN2019091859-appb-000001
ω是转子的角速度；
转子的合外力矩：
Figure PCTCN2019091859-appb-000002
其中，α是转子的角加速度。
假设摆动频率不变，定子不动，则J 转子和M 转子为定值，则转子相对于定子的角加速度不变。
通电驱动摆动电机，转子对定子产生电磁反作用力，理想状态下：
M 转子＝M 定子(3)。
定子的转动惯量：J 定子＝Σm ir i 2(4)；其中，r i是定子质点m i到转轴中心的距离；
定子的合外力矩：
Figure PCTCN2019091859-appb-000003
其中，α'是定子的角加速度；由(1)、(2)、(3)、(4)式，
则
Figure PCTCN2019091859-appb-000004
而实际应用中，摆动电机120的定子通常是通过弹性减震垫140与主控结构130安装连接的。定子的质量有限，转子摆动时，在电磁反作用力下，相对与主控结构130会反向摆动；转子相对于定子的摆动幅度不变，而相对于主控结构130，则转子的摆动幅度减小。定子的摆动是通过弹性减震垫140作用在主控结构130上，定子的摆动幅度大时，会造成主控结构130的摆动幅度变大， 在有的应用中这是对主控结构130不利的，如造成主控结构130上的电子元器件的松动或疲劳损坏，故而摆动电机的外壳的摆动是一种无益的振动，有摆动电机引起的电动手柄的摆动也是影响手感的无益的振动。
由(1)(4)式可知，转动惯量与质量和其到电机轴中心的距离有关，摆动电机一旦制作成型，显然不再可能对其结构进行更改，定子的转动惯量即是定值，但可在定子或者摆动电机外壳上增加远离电机轴中心的调振质量体，以增加定子的转动惯量，则定子的角加速度减小，定子的摆动幅度也减小。由上可知，相对于主控结构130，定子的摆动幅度减小，则减少了从外壳上传递给主控结构130的摆动幅度，也增大了转子的摆动幅度。这样，从根源上减小了摆动电机定子的摆动幅度，也使得摆动电机设计更自由。摆动电机如果设计得尺寸小，重量轻，定子的转动惯量就小，工作时的摆动也就大，有了本实施例，就使得摆动电机设计时，不用考虑定子的惯量，做得轻小些，降低成本。由式(5)可知，在不同的应用中，在负载变化时，转子的转动惯量变化，只需调整调振质量体，就可抑制定子的无益的摆动幅度，而不需要调整电机。
如图1和图2所示，基于上述理论分析，我们做了进一步改进，除与传统电动手柄相同之处外，重要的是，摆动电机120与壳体110的内壁之间形成有间隙150，在间隙150处布置有调振质量体160，且调振质量体160固定在摆动电机120的外壳上，调振质量体160不与壳体110内壁接触。
关于该调振质量体160的固定，可以通过多种方式进行，比如用胶黏剂粘贴，或者用紧固件固定，或者通过槽内嵌入的方式，预先在摆动电机的外壳上形成嵌槽，将调振质量体160嵌入固定，或者焊接在摆动电机表面，或者其他任意可固定的方式，只要其结果能承受摆动电机的摆动而不脱落即可。
本实施例提供的电动手柄10中，设置调振质量体160的目的，在于增加摆动电机120定子的转动惯量，通过安装有限质量的调振质量体160，从根源上减小了摆动电机120的外壳的摆动幅度，使得其传递到控制线路板133、电池 132以及壳体110上的摆动幅度减小，使用者的手握震感降低，刷牙手感更舒适；也使摆动电机120输出的有效摆动幅度增加，增强了刷牙效果。同时，该摆动电机120和该调整质量体160均不与电动手柄10的壳体110的内壁直接接触，摆动电机120上的摆动不会直接传递给壳体110。
进一步地，如图1所示，为了便于在安装空腔中安装固定摆动电机120以及使得摆动电机120能够较好地防水和减振，具体地，摆动电机120的前端套有密封顶环122，通过密封顶环122顶紧套在输出轴121上的弹性密封圈123，将弹性密封圈123顶压在壳体110内壁的前端；摆动电机120的尾端124通过套在其上的弹性减震垫140安装在主体支架131上。这样，摆动电机120通过其前后两端弹性支撑在壳体110内，在轴向上与壳体内壁形成间隙150。
如图1、图2和图3所示，关于调振质量体160的第一种实施方式：调振质量体160设为一件或多件，形状为平板状，并安装固定在摆动电机120的外壳上。具体地，可以在摆动电机120外壳的圆周方向有足够间隙的位置上设置平板状的调振质量体160。而对于调振质量体160的具体数量选择，根据所需要的调振质量体的质量而定。比如，其在摆动电机120的外壳的两个上下侧面上，安装一件或两件与其侧面相适配的平板状的调振质量体160。
关于调振质量体160的第二种实施方式：如图4所示，调振质量体160设置为呈半包裹状固定在有足够间隙的位置对应的摆动电机120上的外壳上。采用沿摆动电机外壳呈半包裹状的有限质量的调振质量体160，增大了调振质量体160的表面积，相应地就减小了调振质量体160的厚度，也就降低了对安装的间隙150的空间要求，手柄可设计细小些。调振质量体160可以用薄的钢板冲压成型，容易制造。
关于调振质量体160的第三种实施方式：如图6所示，当摆动电机120的外壳上有凹陷部位125时，还可以在凹陷部位125处固定安装保形调振质量体161，其与摆动电机120的纵向外形轮廓匹配。这样，保形调振质量体161在减小摆动电机120外壳的摆动幅度的同时，还能够填平了外壳纵向轮廓的凹陷部 位125，使得外壳的纵向轮廓更为平整，具有保形的作用，更便于摆动电机120于安装空腔中的安装。
如图3所示，当然，关于调振质量体160的设置方式，还可以是：同时于摆动电机120的外壳上设置呈平板状的调振质量体160和在凹陷部位125处固定安装保形调振质量体161。
需要补充的是，本实施例中，优选地，调振质量体160可由钢板冲压剪裁而成，成本低，易制造；而保形调振质量体161可采用成本低、易制造及比重大的锌合金压铸。但是，对于调振质量体160和保形调振质量体161的具体材质选择，并不仅限于此，只要满足易裁剪成型、易制造、易回收利用的金属或合金材料即可。
更进一步，摆动电机120以一定倾斜角度安装于壳体110内，使得摆动电机120的电机轴心线180偏离电动手柄10的手柄中心线170，摆动电机120偏离手柄中心线170的地方的间隙150增大，调振质量体160安装于对应此处间隙150的摆动电机120的外壳上。摆动电机120倾斜安装使得间隙150增大，更方便安装调振质量体，同时也使得电动手柄10偏离电机轴心线180，由式(1)的转动惯量公式可知，偏离后，电动手柄10的转动惯量增加，进一步减小了电动手柄10的摆动幅度。实施在电动牙刷中，也使得牙刷头倾斜，符合人体工程学，刷牙更顺手。
申请人还对没有添加调振质量体160和添加调振质量体160后的方案做了试验进行比对，下面是试验过程及结果说明：
以摆动电机120加装牙刷头210作为负载，电机尾端124加弹性减震垫140与主体支架131相连，线路板133和电池132安装在主体支架131上，用弹性体支撑摆动电机120的前端和主体支架后端，以30800摆/分钟的驱动电路驱动摆动电机120摆动。
在牙刷头210上做刻线，用来指示刷头负载摆动幅度变化，在摆动电机120外壳上和线路板上分别固定刚性指针，用来指示摆动电机120外壳和线路板的 摆动幅度。(指示装置不考虑其到摆动中心的距离)
表1
Figure PCTCN2019091859-appb-000005
该表1中的刷头负载指示摆幅，其数值越大，表征其传递给牙刷头的有效摆动越大；电机外壳指示摆幅越小越好，其数值越小，表征电机外壳往外传递的无益摆动越小；线路板指示摆幅越小越好，其数值越小，表征摆动电机通过弹性减震垫140传递到线路板的摆幅越小。实验方案2和实验方案3的刷头负载指示摆幅明显大于实验方案1的刷头负载指示摆幅；而实验方案2和实验方案3的电机外壳指示摆幅远小于实验方案1的电机外壳指示摆幅，且实验方案3相对于实验方案2的电机外壳指示摆幅更小。由此可见，其质量相对较大的调振质量体能提高摆动电机有效摆动输出，更能减小从摆动电机外壳输出的无益摆动。线路板指示摆幅比较小，说明弹性减震垫140的减振效果明显。但是因为实验中的固定平台相当于电动手柄外壳，其质量远大于电动手柄外壳质量，故而线路板指示摆幅较小，实验只是验证原理和效果。真实的电动手柄和线路板的摆幅会大于实验数据。
进一步分析表1的数据，调振质量体增加到一定值后，刷头负载指示摆幅变化很小，摆动电机外壳的指示摆幅变化也逐渐减小。由此可知，通过安装有限质量的调振质量体160，如加装8克调振质量体，就可达到合适的效果，即能够使得摆动电机120外壳无益的摆动幅度减小，也能够使得摆动电机120输出的有效摆动幅度增加，加强牙刷头210的有利摆动。
如图5所示，本实施例还提供了一种电动牙刷20，包括上述电动手柄10及牙刷头210，其中，牙刷头210插装在摆动电机120的输出轴121上。
由于本发明提供的电动牙刷20采用了上述电动手柄10，其通过在摆动电机120的外壳上安装有限质量的调振质量体160，使得摆动电机120壳体110的摆动幅度减小，也使得其传递到控制线路板133、电池132以及壳体110的摆动幅度减小，使用者的手握震感降低，并使摆动电机120输出的有效摆动幅度增加，传递给牙刷头210的有利摆动加强，手柄减振效果更佳，刷牙手感更舒适，刷牙效果更好。由此可以采用尺寸小，重量轻的摆动电机，其安装更加自由，可根据需要倾斜安装，如图5所示，使得牙刷头倾斜，符合人体工程学，刷牙更顺手，也使得手柄转动惯量更大，进一步减小了手柄的振动；手柄也可以设计得轻小些，手握更轻便。
本实施例还提供了一种电动清洁刷，包括上述电动手柄10及清洁刷头，其中，清洁刷头插装在摆动电机120的输出轴121上。
由于本实施例电动清洁刷采用了上述电动手柄10，其通过于摆动电机120的外壳上安装有限质量的调振质量体160，使得摆动电机120壳体110的摆动幅度减小，也使得其传递到控制线路板133、电池132以及电动手柄10上壳体110的摆动幅度减小，使用者的手握震感降低，并使摆动电机120输出的有效摆动幅度增加，加强了清洁刷头的有利摆动，手柄减振效果更佳，清洁效果更好。该电动清洁刷驱动刷毛快速摆动，可以方便地清洁杯子、水果等物品。
以上仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。

Claims (8)

  1. 一种电动手柄，包括壳体、后盖、摆动电机和主控结构；所述壳体和所述后盖内形成安装空腔，所述摆动电机和所述主控结构前后串装于所述安装空腔内；所述摆动电机上设有输出轴，所述摆动电机的输出轴从所述壳体的前端伸出；所述主控结构包括主体支架及安装于所述主体支架上的电池和控制线路板；所述主体支架卡接在所述壳体内壁上；
    其特征在于，所述摆动电机与所述壳体的内壁之间形成有间隙，在所述间隙处布置有调振质量体，且所述调振质量体固定在所述摆动电机的外壳上，所述调振质量体不与所述壳体内壁接触。
  2. 根据权利要求1所述的电动手柄，其特征在于，所述摆动电机的前端套有密封顶环和弹性密封圈，通过所述密封顶环顶紧套在所述输出轴上的弹性密封圈，将所述弹性密封圈顶压在所述壳体的前端；所述摆动电机的尾端通过套在其上的弹性减震垫安装在所述主体支架上。
  3. 根据权利要求1所述的电动手柄，其特征在于，所述调振质量体设为一件或多件，形状为平板状，并安装固定在所述间隙对应的所述摆动电机的外壳上。
  4. 根据权利要求1所述的电动手柄，其特征在于，所述调振质量体设置为呈半包裹状固定在所述间隙对应的所述摆动电机上的外壳上。
  5. 根据权利要求1所述的电动手柄，其特征在于，所述摆动电机的外壳上有凹陷部位，在所述凹陷部位处固定安装有保形调振质量体，所述保形调振质量体与所述摆动电机的纵向外形轮廓匹配。
  6. 根据权利要求1所述的电动手柄，其特征在于，所述摆动电机以一定倾斜角度安装于所述壳体内，使得所述摆动电机的轴心线偏离所述电动手柄的中心线，所述摆动电机偏离电动手柄中心线的地方的所述间隙增大，所述调振质量体安装于对应此处间隙的所述摆动电机的外壳上。
  7. 一种电动牙刷，包括电动手柄及牙刷头，其特征在于，所述电动手柄为权利要求1-6中任意一项所述的电动手柄，其中，所述牙刷头插装在所述摆动电机的输出轴上。
  8. 一种电动清洁刷，包括电动手柄及清洁刷头，其特征在于，所述电动手柄为权利要求1-6中任意一项所述的电动手柄，其中，所述清洁刷头插装在所述摆动电机的输出轴上。
PCT/CN2019/091859 2018-11-12 2019-06-19 电动手柄、电动牙刷及电动清洁刷 WO2020098270A1 (zh)

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