WO2015113264A1 - 一种个人电动清洁工具 - Google Patents

一种个人电动清洁工具 Download PDF

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Publication number
WO2015113264A1
WO2015113264A1 PCT/CN2014/071784 CN2014071784W WO2015113264A1 WO 2015113264 A1 WO2015113264 A1 WO 2015113264A1 CN 2014071784 W CN2014071784 W CN 2014071784W WO 2015113264 A1 WO2015113264 A1 WO 2015113264A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
cleaning tool
head
rotation
personal electric
Prior art date
Application number
PCT/CN2014/071784
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 EP14880600.3A priority Critical patent/EP3111884A4/en
Priority to PCT/CN2014/071784 priority patent/WO2015113264A1/zh
Priority to US15/114,680 priority patent/US20160346069A1/en
Publication of WO2015113264A1 publication Critical patent/WO2015113264A1/zh

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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
    • A61C17/3436—Rotation around the axis perpendicular to the plane defined by the bristle holder
    • 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

Definitions

  • the present invention relates to a personal electric cleaning tool, and more particularly to an oral electric cleaning tool, and more particularly, the oral electric cleaning tool is an electric toothbrush.
  • electric toothbrushes offer many oral hygiene benefits. For example, a toothbrush can remove spots and food debris to help avoid dental caries and disease. They remove the stained surface of each tooth surface to help the teeth whiten.
  • the bristles combined with the brushing motion massage the gum tissue for stimulating tissue and increasing tissue health.
  • electric toothbrushes can be moved at very high speeds, which results in better cleaning results.
  • an electric toothbrush is powered by a power supply element, such as a disposable battery or a rechargeable battery, which powers a drive element, such as a small motor, which in turn passes through a drive train disposed between the drive element and the cleaning unit
  • a cleaning unit such as a brush head, is driven to cause the cleaning unit to reciprocate or reciprocate to achieve cleaning of the teeth.
  • the head of the existing electric toothbrush accommodates the reciprocating member, the volume of the head is usually constructed to be large.
  • the head of such a toothbrush is inserted into the mouth to perform a brushing operation, the user's feeling is not particularly comfortable.
  • a personal electric cleaning tool which includes: a handle, a head and a drive rod.
  • the handle receives the drive element
  • the head is coupled with a carrier carrying the cleaning element
  • the carrier defines a first engagement shape
  • the drive rod is operatively coupled to the drive element at its end remote from the head, in proximity to the head
  • One end of the portion is fixed with a drive wheel defining a second engagement shape that is adapted to the first engagement shape such that the carrier reciprocally rotates with the drive wheel when the transmission rod is driven by the drive member.
  • one of the first joint shape and the second joint shape is a shape defined by two tapered tooth faces facing each other on one bevel gear
  • the other of the first joint shape and the second joint shape is The shape defined by a tapered tooth that engages the two tapered tooth faces.
  • the carrier body is provided with a limiting portion
  • the head portion is correspondingly provided with a matching limiting portion
  • the limiting portion and the matching limiting portion are configured to always limit the matching portion when the carrier is driven by the rotation of the transmission rod
  • the bit engages to allow the carrier to rotate about its axis of rotation while preventing the carrier from disengaging from the head.
  • the carrier does not slide on its axis of rotation, or the carrier is only limitedly slid on its axis of rotation, thereby preventing it from flying off the head during operation.
  • the carrier does not slide on its axis of rotation, or the carrier is only limitedly slid on its axis of rotation, thereby preventing it from flying off the head during operation.
  • the limiting portion is a groove
  • the matching limiting portion is a limiting pin.
  • the groove is circumferentially opened on the outer surface of the connecting portion of the carrier, and one end of the limiting pin is fixed to the other end of the head. Inside the head and received into the groove.
  • the number of limit pins is at least two.
  • the at least two limit pins are hooked around the first axis of rotation of the carrier on a plane perpendicular to the first axis of rotation of the carrier.
  • the gear portion of the drive wheel defining the second engagement shape and the connecting portion of the carrier are received within the head.
  • the rotation angle of the transmission rod is not more than 90 degrees, and accordingly, the rotation angle of the carrier is not more than 90 degrees.
  • the carrier follows the first axis of rotation and the drive rod rotates about the second axis of rotation, the first axis of rotation being substantially perpendicular to the second axis of rotation.
  • the personal electric cleaning tool is an oral cleaning tool.
  • the oral cleaning tool is an electric toothbrush
  • the aforementioned cleaning element is a bristles.
  • FIG. 1 is a schematic view schematically showing an electric toothbrush according to an embodiment of the present invention
  • FIG. 2 is a front elevational view schematically showing an electric toothbrush according to an embodiment of the present invention, wherein a handle is removed;
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
  • FIG. 4 is a schematic view schematically showing a partial transmission rod of an electric toothbrush and a driving wheel connected thereto according to an embodiment of the present invention
  • FIG. 5 is a view schematically showing a cleaning element of an electric toothbrush, a carrier carrying the cleaning element, and a driving wheel adapted to the carrier according to an embodiment of the present invention
  • FIG. 6 is a cross-sectional view taken along line BB of FIG. Figure
  • Figure 7 is a cross-sectional view taken along the line BB of Figure 5, in which the drive wheel is removed;
  • Figure 8 is a schematic view schematically showing a drive wheel mounted on a transmission rod of an electric toothbrush according to an embodiment of the present invention ;
  • FIG. 9 is a schematic view schematically showing an electric toothbrush according to an embodiment of the present invention, in which a handle is removed, which shows in detail that a connecting portion of a carrier is housed in a head;
  • Figure 10 is a schematic view of Figure 9 with the carrier and drive wheel removed;
  • Figure 11 is a side view of Figure 9 including the complete carrier
  • Figure 12 is a schematic view of Figure 11 after removal of the head and neck housing
  • Figure 13 is a schematic view taken along line C-C of Figure 9, in which the limit pin, the complete carrier and the drive wheel are shown.
  • the invention can be used in oral care or cleaning tools for non-electric toothbrushes, such as dental drilling tools, dental polishing tools, dental grinding tools or oral surgical tools.
  • the present invention can be applied to personal cleaning tools such as razors in addition to oral care or cleaning tools.
  • FIG. 1 is a schematic view schematically showing an electric toothbrush 100 according to an embodiment of the present invention
  • FIG. 2 is a front view schematically showing an electric toothbrush 100 according to an embodiment of the present invention, wherein 3 is a cross-sectional view taken along the line AA of FIG. 2 .
  • an electric toothbrush 100 includes a handle 10, a head 20, and a neck 30 extending between the handle 10 and the head 20.
  • the aforementioned neck 30 and head 20 can be two parts of a unitary component.
  • the handle 10 generally houses a power supply member such as a rechargeable battery and a driving member such as a motor, and a switch 11 for opening or closing an electrical connection between the power supply member and the driving member is further provided on an outer surface of the handle 10.
  • a power supply member such as a rechargeable battery
  • a driving member such as a motor
  • a switch 11 for opening or closing an electrical connection between the power supply member and the driving member is further provided on an outer surface of the handle 10.
  • the head 20 is connected to a carrier 22 carrying a cleaning element 21, wherein, in the illustration, the cleaning element 21 is a bristles and the carrier 22 is a brush disk.
  • the carrier 22 includes a connecting portion 221 that can be received in the forehead 20 and further extends from the connecting portion 221 along its first axis of rotation L1 and in the radial direction perpendicular to its first axis of rotation L1
  • the fixing portion 223 for fixing the cleaning member 21, the aforementioned cleaning member 21 such as bristles are anchored on the fixing portion 223, and the connecting portion 221 is housed in the head portion 20 and is rotatable about the first rotation axis L1. Turn.
  • FIG. 9 is a schematic view schematically showing an electric toothbrush according to an embodiment of the present invention, in which a handle is removed, which shows in detail that a connecting portion of a carrier is housed in a head;
  • FIG. Figure 9 is a schematic view of the carrier and drive wheel removed.
  • the inner surface of the head 20 includes a plurality of inner sides 23, and correspondingly, the connecting portion 221 of the carrier 22 is substantially cylindrical except for the hollow portion.
  • the connecting portion 221 is mounted in the head portion 20
  • the outer surface of the connecting portion 221 is substantially tangential to the inner side faces 23 of the head portion 20, whereby the connecting portion 221 is restrained by the inner side faces 23 to be rotatable first
  • the rotation axis L1 rotates. It can be understood that the inner surface of the head 20 can be any other suitable shape.
  • the connecting portion 221 of the carrier 22 can also be any other suitable shape that can be accommodated in the head 20, as long as the head 20 It is possible to restrain the connecting portion 221 of the carrier 22 from rotating about its first axis of rotation L1.
  • the shape of the inner surface of the head 20 does not necessarily correspond to the shape of the connecting portion 221 of the carrier 22, for example, in an embodiment not shown, one shaft can be fixed to the head.
  • a hole along the first axis of rotation L1 of the connecting portion 221 of the carrier 22 is provided to mount the carrier 22 on the shaft, whereby the carrier 22 is wound around the first axis
  • a rotational axis L1 is rotatably mounted on the head 20.
  • Figure 11 is a side view of Figure 9 including a complete carrier
  • Figure 12 is a schematic view of Figure 11 after removal of the head and neck housing
  • Figure 13 is a schematic view along the CC direction of Figure 9, wherein The limit pin, the complete carrier and the drive wheel are out.
  • a pair of arcuate grooves 24 opposed to each other are further circumferentially opened, and correspondingly, the head portion 20 is fixed with a pair of diametrically opposite each other.
  • an arcuate groove may be circumferentially opened on the outer surface of the connecting portion 221, and correspondingly, the arcuate groove is fixed on the head 20 Match only one limit pin.
  • the head portion 20 restrains the connecting portion 221 of the carrier 22 from rotating about the first axis of rotation L1
  • the gap existing between the head portion 20 and the connecting portion 221 of the carrier 22 causes the carrier
  • the actual axis of rotation of 22 forms an angle with the first axis of rotation L1. Therefore, when the carrier 22 rotates about the first rotation axis L1, the single limit pin cannot smoothly restrain the sliding of the carrier 22 along the first rotation axis L1, and the actual rotation axis of the carrier 22 and the first rotation axis L1 forms an ever-changing angle, whereby the fixed portion 223 of the carrier 22 and the head 20 form a crevice that varies in size and orientation. As a result, the squeezing of the size and orientation of the fixed portion 223 of the high-speed and reciprocating carrier 22 and the head 20 may present a risk of sandwiching the wound tissue.
  • At least one groove is circumferentially opened on the outer surface of the 221, for example, only one annular groove may be opened or two or more arcuate grooves may be opened, and correspondingly, the head 20 is fixed to match the groove. More than two limit pins.
  • At least one groove may be circumferentially opened on the outer surface of the connecting portion 221 of the carrier 22, and correspondingly, the sum is fixed on the head 20.
  • the two or more limit pins are evenly distributed around the first axis of rotation L1 on a plane perpendicular to the first axis of rotation U.
  • the aforementioned curved groove 24 may be opened on the head 20, and at the same time, The position pin 25 can be fixed to the connecting portion 221 of the carrier 22.
  • other limiting portions may be provided on the connecting portion 221 of the carrier 22, while matching portions are provided correspondingly on the head 20, which may be configured to always match the limiting portion when the carrier 22 is rotated.
  • the limiting portion is engaged such that the carrier 22 cannot slide along the first axis of rotation L1 of the head 20 or only allows the carrier 22 to slide restrictively along the first axis of rotation L1 of the forehead 20, thereby preventing
  • the carrier 22 is detached from the head 20 and flies out. This is extremely important for the safety of the oral cleaning tool, because once the carrier 22 is flying out at high speeds, it may damage the user's mouth, tongue and/or throat, and may even enter extremely dangerously. Digestive tract.
  • FIG. 4 is a schematic view schematically showing a partial transmission rod of an electric toothbrush and a driving wheel fixed thereto according to an embodiment of the present invention
  • FIG. 5 is a view schematically showing an embodiment according to the present invention
  • FIG. 6 is a cross-sectional view taken along the line BB of FIG. 5
  • FIG. 7 is a cross-sectional view taken along the line BB of FIG. 5, in which, a cleaning element of the electric toothbrush, a carrier carrying the cleaning element, and a driving wheel adapted to the carrier; The drive wheel is removed
  • FIG. 8 is a schematic view schematically showing a drive wheel mounted on a transmission rod of an electric toothbrush according to an embodiment of the present invention.
  • the neck 30 houses a longitudinally extending drive rod 31, one end of which is remote from the head 20 operatively coupled to a drive member such as a motor, and one end adjacent the head 20 coupled to the carrier
  • a drive member such as a motor
  • the transmission rod 31 is reciprocally rotated by a predetermined angular range under the driving of the driving member, and at the same time, the carrier 22 is driven by the transmission rod 31 to reciprocately rotate.
  • the transmission rod 31 includes a shank drive shaft segment 311, a head drive shaft segment 313, and a coupling member 314 that connects the shank drive shaft segment 311 and the head drive shaft segment 313 together, wherein the shank drive shaft
  • the segment 31 1 and the head drive shaft segment 313 have the same rotational axis L2 (second rotational axis), and the second rotational axis L2 is substantially perpendicular to the aforementioned first rotational axis L1 of the carrier 22.
  • the crotch drive shaft segment 31 1 is reciprocally rotated about its second axis of rotation L2 by a rotation angle of less than 90 degrees, while the head drive shaft segment 313 is also rotated about the second axis of rotation L2.
  • the angle rotates.
  • the shank drive shaft segment 31 1 of the drive rod 31 can be coupled to the motor by a four-link configuration as is well known to those skilled in the art to rotate the motor.
  • the motion becomes a reciprocating rotation within a predetermined angle range, and since there are many specific mechanisms such as those in the prior art, such a structure is not shown in detail in all the drawings of the present application for the purpose of saving space.
  • the kinetic energy of the shank drive shaft segment 3 H is transmitted to the head drive shaft segment 313 by the coupling 314, any shank drive shaft can be employed.
  • the reciprocating rotation of the segment 311 is transmitted to the head drive shaft segment 313 and is reciprocally rotated by a predetermined angular range.
  • the head drive shaft section 313 of the transmission rod 31 is fixed with a drive wheel 315 at one end remote from the drive element, and only one tapered tooth is disposed on the drive wheel 315.
  • the teeth include tapered surfaces 8 tapered teeth 315a, 315b 0 respectively, as the understanding of the driving wheels 315 of the carrier member 22 defines an engagement with the tapered teeth by a bevel gear
  • the two conical tooth flanks 26, 27 facing each other, the two conical tooth flanks 26, 27 define the aforementioned hollow portion.
  • the tapered tooth flanks 26 of the carrier 22 can engage the tapered tooth faces 315a of the drive wheel 315, the tapered tooth flanks 27 of the carrier 22 can be engaged The tapered tooth flanks 315b of the drive wheel 315. Since the tapered tooth flanks 26, 27 are two tapered faces facing each other in a complete bevel gear, the tapered tooth flanks 26, 27 have the same bevel gear taper points. Furthermore, the tapered tooth flanks 26, 27 are eccentrically distributed with respect to the center of rotation 0 of the carrier 22.
  • the gear portion 318 defining a tapered tooth of the aforementioned drive wheel 315 and the connecting portion 221 of the carrier 22 are housed in the head 20, that is, the read drive
  • the gear portion of the wheel 315 defining the second engagement shape and the connection portion 221 of the carrier 22 are housed within the head 20.
  • the gear ratio of the tapered teeth of the aforementioned drive wheel 315 and the tapered tooth faces 26, 27 of the carrier 22 can be configured to any suitable value as desired, i.e., the transmission can be accelerated, decelerated. Or constant speed. In this embodiment, the gear ratio is 1:1.
  • a tapered tooth may be provided on the connecting portion 221 of the carrier 22, and at the same time, a tapered portion may be provided on the driving wheel 315 fixed to the transmission rod 31.
  • the two tapered tooth flanks define a hollow portion in which a tapered tooth on the connecting portion 221 of the aforementioned carrier 22 is placed for engagement with the two tapered tooth faces.
  • the gear portion defining the two tapered tooth faces of the aforementioned drive wheel 315 and the connecting portion 221 of the carrier 22 are also housed within the forehead 20, i.e., the second defining drive wheel 315
  • the gear portion of the engaged shape and the connecting portion 221 of the carrier 22 are housed in the head 20.
  • the connecting portion 221 of the carrier 22 can define a first engagement shape
  • the drive wheel 315 of the transmission rod 31 can define a second engagement shape that cooperates with the first engagement shape. So that the carrier 22 can be driven by the drive wheel 315.
  • the first engagement shape includes, but is not limited to, the shape defined by the two tapered tooth flanks or one tapered tooth.
  • the second engagement shape includes, but is not limited to, the aforementioned one tapered tooth or two tapered tooth flanks.
  • the first engagement shape may be a shape defined by the worm
  • the second engagement shape may be a shape defined by a turbine that cooperates with the aforementioned worm.
  • the motor housed within the handle 10 of the electric toothbrush 100 is activated, and the motor drives the handle drive shaft segment 311 through a well-known transmission assembly.
  • the shank drive shaft segment 311 transmits kinetic energy to the head drive shaft segment 313 via the coupling member 314, and the drive wheel 315 is driven by the head drive shaft segment 313.
  • the drive rod 31 which is a combination of the handle drive shaft segment 31 1 , the head drive shaft segment 313 and the coupling member 314, drives the drive wheel 315 fixed to the end remote from the drive member about the second axis of rotation L2 to be generally smaller than A 90 degree (typically, about 60 degrees) predetermined range of rotational angles is reciprocally rotated.
  • the driving wheel 315 rotates counterclockwise about the second rotation axis L2
  • the tapered tooth surface 315a of the driving wheel 315 presses the tapered tooth surface 26 of the carrier 22, and the carrier 22 is circulated around the first rotation axis L1.
  • the hour hand rotates; when the driving wheel 315 rotates clockwise about the second rotation axis L2, the tapered tooth surface 315b of the driving wheel 315 presses the tapered tooth surface 27 of the carrier 22, and the carrier 22 rotates around the first axis of rotation L1 rotates counterclockwise. Regardless of which direction of rotation, the kinetic energy transfer between the drive wheel 315 and the carrier 22 is through the tapered tooth flanks and carrier of the drive wheel 315 that are engaged with each other. The tapered tooth flanks of 22 are completed.
  • the cleaning element 21 performs a cleaning action on the cleaning surface, such as the tooth surface, as the carrier 22 reciprocates about the first axis of rotation L1.
  • the cleaning element performing the shaving is a blade Therefore, when the above-mentioned electric toothbrush is deformed into an electric shaver, the cleaning element needs to be appropriately deformed.
  • the reciprocating speed of the blade as the cleaning element during shaving should be higher than that of the cleaning element when brushing the tooth.
  • the movement speed of the bristles is faster, and the transmission mode can be deformed into an acceleration transmission mode.
  • the aforementioned "personal cleaning tool” can also include an electric shoe brush, which can remove dust from the upper or oil on the upper. It should be readily understood by a person of ordinary skill that such an electric shoe brush works much like an electric toothbrush, except that some adaptive deformation of the cleaning element may be made according to actual needs.

Abstract

一种个人电动清洁工具，其包括：柄部（10），其容纳有驱动元件；头部（20），其连接有承载清洁元件（21）的承载体（22），承载体（22）限定了第一接合形状；传动杆（31），其远离头部（20）的一端可操作地连接到驱动元件，其靠近头部（20）的一端固定有限定了与第一接合形状适配的第二接合形状的驱动轮（315），以使得当传动杆（31）被驱动元件驱动时承载体（22）随驱动轮（315）而往复转动；其中，第一接合形状和第二接合形状的其中之一为由一个锥齿轮（315a，315b）上两个彼此面对的锥形齿齿面（26，27）所限定的形状，第一接合形状和第二接合形状的另一个为与两个锥形齿齿面（26，27）啮合的一个锥形齿所限定的形状。个人电动清洁工具的头部（20）的体积被设计得更小，使用者使用更舒服。

Description

一种个人电动清洁工具 技术领域
本发明涉及一种个人电动清洁工具， 具体地， 涉及一种口腔电 动清洁工具， 更具体地， 该口腔电动清洁工具为电动牙刷。 背景技术
本领域存在各种用于将马达或其他电动源的旋转输出转换成所 需要的个人电动清洁工具所需的特定运动的技术。 很多技术包括一 个作为传动系部件的转轴。 该转轴可旋转、 摆动或往复运动。 该转 轴被联接到个人电动清洁工具的清洁元件的承载体上。 通常， 该清 洁元件的承载体由转轴以旋转或摆动的方式围绕一个垂直于该转轴 纵向轴线的轴线产生传动。
作为个人电动清洁工具的一种， 电动牙刷提供了许多口腔卫生 的好处。 例如， 牙刷可以除去斑点和食品残渣， 以便帮助避免龋齿 和疾病。 它们除去每颗牙齿表面被玷污的表面， 以便有助于牙齿变 白。 另外， 与刷牙运动相结合的刷毛按摩牙龈組织， 用于刺激组织 和增加组织的健康。 而且， 电动牙刷可以以非常高的速度运动， 这 可以达到更好的清洁效果。 通常电动牙刷由诸如一次性电池或者可 充电电池的电力供应元件提供电力， 上述电力供应元件给诸如小型 电机的驱动元件提供电力， 该驱动元件再通过布置在驱动元件和清 洁单元之间的传动系驱动清洁单元， 如牙刷头， 以使清洁单元往复 摆动或往复转动从而实现对牙齿的清洁。
然而， 由于现有的电动牙刷的头部都容纳有往复运动构件， 故， 头部的体积通常被构造得较大。 当这种牙刷的头部伸入到口腔内执 行刷牙操作时， 使用者的感觉并不是特别舒服。 发明内容
为了将个人电动清洁工具的头部的体积设计得更小， 本发明公 开了一种个人电动清洁工具， 其包括： 柄部、 头部和传动杆。 其中， 柄部容纳有驱动元件， 头部连接有承载清洁元件的承载体， 承载体 限定了第一接合形状； 传动杆在其远离头部的一端可操作地连接到 驱动元件， 在其靠近头部的一端固定有限定了与第一接合形状适配 的第二接合形状的驱动轮， 以使得当传动杆被驱动元件驱动时承载 体随驱动轮而往复转动。 其中， 第一接合形状和第二接合形状的其 中之一为由一个锥齿轮上两个彼此面对的锥形齿齿面所限定的形 状， 第一接合形状和第二接合形状的另一个为与两个锥形齿齿面啮 合的一个锥形齿所限定的形状。
进一步地， 承载体设有限位部， 头部相应地设有匹配限位部， 限位部和匹配限位部被配置为当承载体在传动杆的转动而随动时限 位部始终与匹配限位部接合， 从而允许承载体铙其转动轴线转动的 同时防止承载体脱离头部。 这样， 在使用谅护理工具时， 该承载体 不会在其转动轴线上滑动， 或者谅承载体仅在其转动轴线上做限制 性的滑动， 从而可以防止它在运行期间中脱离头部而飞出。
具体地， 限位部为凹槽， 匹配限位部为限位销， 凹槽周向地开 设在承载体的连接部分的外表面上， 限位销的一端固定到头部上另 一端凸伸到头部内并被容纳到凹槽内。
优选地， 限位销的数目为至少两个。
更优选地， 至少两个限位销在与承载体的第一转动轴线相垂直 的平面上绕承载体的第一转动轴线均勾分布。
优选地， 驱动轮的限定第二接合形状的齿轮部分和承载体的连 接部分被容纳在头部内。
优选地， 传动杆的转动角度不大于 90度， 相应地， 承载体的转 动角度也不大于 90度。
优选地， 承载体绕着第一转动轴线随动， 传动杆铙着第二转动 轴线转动， 第一转动轴线基本上垂直于第二转动轴线。
具体地， 个人电动清洁工具为口腔清洁工具。
更具体地， 口腔清洁工具为电动牙刷， 前述清洁元件为刷毛。 附图说明
为了解释本发明， 将在下文中参考附图描述其示例性实施方式， 附图中：
图 1 为示意性地示出了根据本发明一种实施方式的电动牙刷的 示意图；
图 2 为示意性地示出了根据本发明一种实施方式的电动牙刷的 正视图， 其中， 移除了柄部；
图 3为图 2的 A-A方向的剖面图；
图 4 为示意性地示出了根据本发明一种实施方式的电动牙刷的 部分传动杆和与其连接的驱动轮的示意图；
图 5 为示意性地示出了根据本发明一种实施方式的电动牙刷的 清洁元件、 承载清洁元件的承载体和与承载体相适配的驱动轮； 图 6为图 5的 B-B方向的剖面图；
图 7为图 5的 B-B方向的剖面图， 其中， 移除了驱动轮； 图 8 为示意性地示出了根据本发明一种实施方式的电动牙刷的 安装在传动杆上的驱动轮的示意图；
图 9 为示意性地示出了根据本发明一种实施方式的电动牙刷的 示意图， 其中， 移除了柄部， 该图详细地示出了承载体的连接部分 被容纳于头部中；
图 10为图 9被移除了承载体和驱动轮后的示意图；
图 11为图 9在侧面的示意图， 包含完整的承载体；
图 12为图 1 1在去除了头部和颈部外壳后的示意图；
图 13为沿图 9 C-C方向的示意图， 其中， 示出了限位销、 完整 的承载体和驱动轮。
不同图中的相似特征由相似的附图标记指示。 具体实施方式
在以下的实施方式的详细描述中， 参照构成该描述的一部分的 附图进行说明。 附图以示例的方式展示出特定的实施方式， 本发明 被实现在这些实施方式中。 所示出的实施方式不是为了穷尽根据本 发明的所有实施方式。 可以理解， 其他的实施方式可以被利用， 结 构性或逻辑性的改变能够在不脱离本发明的范围的前提下被做出。 对于附图， 方向性的术语， 例如 "纵向" 、 "径向" 等， 是参照所 描述的附图的方位而使用的。 由于本发明的实施方式的组件能够被 以多种方位方式， 这些方向性术语是用于说明的目的， 而不是限制 的目的。 因此， 以下的具体实施方式并不是作为限制的意义， 并且 本发明的范围由所附的权利要求书所限定。
下文以电动牙刷为实施例并结合附图更详细地描述本发明的一 种实施方式， 然而， 本领域普通技术人员应当可以理解， 虽然下文 仅以电动牙刷为示例进行解释说明， 但本发明不限于此。 本发明可 用于非电动牙刷的口腔护理或清洁工具中， 诸如牙齿钻孔工具、 牙 齿抛光工具、 牙齿磨削工具或口腔手术工具等。 而且， 除了口腔护 理或清洁工具， 本发明还可以应用到诸如剃须刀的个人清洁工具上。
图 1为示意性地示出了根据本发明一种实施方式的电动牙刷 100 的示意图； 图 2 为示意性地示出了根据本发明一种实施方式的电动 牙刷 100的正视图， 其中， 移除了柄部； 图 3为图 2的 A-A方向的 剖面图。
参见图 1-3 , 根据本发明的一种实施方式， 电动牙刷 100包括柄 部 10、 头部 20和在柄部 10和头部 20之间延伸的颈部 30。 典型地， 前述颈部 30和头部 20可以为一整体部件的两个部分。
柄部 10通常容纳有诸如可充电电池的电力供应部件以及诸如电 机的驱动元件， 在柄部 10的外表面还设置有用于开启或者关闭电力 供应部件和驱动元件之间电连接的开关 11。
头部 20连接有承载清洁元件 21的承载体 22, 其中， 在图示中， 清洁元件 21为刷毛， 承载体 22为刷盘。 具体地， 承载体 22包括可 容纳在谅头部 20内的连接部分 221以及从连接部分 221沿着其第一 转动轴线 L1进一步延伸并在垂直于其第一转动轴线 L1的径向上同 时延伸的用于固定清洁元件 21的固定部分 223， 前述的诸如刷毛的 清洁元件 21均锚定在该固定部分 223上， 连接部分 221容纳在头部 20内并可绕着第一转动轴线 L1转动。
图 9 为示意性地示出了根据本发明一种实施方式的电动牙刷的 示意图， 其中， 移除了柄部， 该图详细地示出了承载体的连接部分 被容纳于头部中；图 10为图 9被移除了承载体和驱动轮后的示意图。
参见图 3、图 9和图 10,该头部 20的内表面包括多个内侧面 23 , 相应地， 承载体 22的连接部分 221除了中空部分基本上呈圆柱状。 当连接部分 221被安装于头部 20内时， 连接部分 221的外表面基本 上与头部 20的各内侧面 23相切， 藉此， 连接部分 221被这些内侧 面 23约束以可绕第一转动轴线 L1转动。 可以理解， 该头部 20的内 表面可以为其他任何合适的形状， 同时， 承载体 22的连接部分 221 也可以为可被容纳在该头部 20内的其他任何合适的形状， 只要头部 20能够约束承载体 22的连接部分 221绕其第一转动轴线 L1转动即 可。 这意味着该头部 20的内表面的形状不一定与承载体 22的连接 部分 221 的形状是对应的， 例如， 在一种未示出的实施例中， 可以 将一根轴固定在头部 20的第一转动轴线 L1上， 同时沿着承载体 22 的连接部分 221的第一转动轴线 L1开设一个能将承载体 22安装于 前述轴上的孔， 藉此， 承载体 22绕着其第一转动轴线 L1可转动地 安装在头部 20上。
图 11为图 9在侧面的示意图， 包含完整的承载体； 图 12为图 1 1在去除了头部和颈部外壳后的示意图； 图 13为沿图 9 的 C-C方 向的示意图， 其中， 示出了限位销、 完整的承载体和驱动轮。
结合图 1 1-13 , 在连接部分 221的外表面上， 还周向地开设有一 对彼此相对的弧形凹槽 24, 相对应的， 头部 20上还固定有一对彼此 径向相对的限位销 25 , 其中， 每个限位销 25 的一端被固定在头部 20上另一端向头部 20内凸伸以分别被容纳并接合于一个弧形凹槽。 藉此， 当承载体 22绕着第一转动轴线 L1转动时， 前述一对限位销 25 始终定位在对应的弧形凹槽 24 内并与之接合从而限制 ΐ亥承载体 22脱离该头部 20而飞出。 可以理解， 读弧形凹槽 24的弧形长度应 当等于或大于承载体 22的转动行程。
还可以理解， 在一种未示出的实施例中， 在连接部分 221 的外 表面上可以周向地开设有弧形凹槽， 相对应的， 头部 20上固定有和 该弧形凹槽相匹配的仅一个限位销。 当承载体 22绕着第一转动轴线 该承载体 22脱离该头部 20而飞出。 然而， 由于一个限位销在限制 承载体 22沿第一转动轴线 L1滑动时， 限位销和承载体 22的实际接 触部分为一条线， 且头部 20和承载体 22的连接部分 221存在运动 间隙。 即， 一方面， 头部 20约束承载体 22的连接部分 221绕着第 一转动轴线 L1转动，另一方面，头部 20和承载体 22的连接部分 221 之间存在的该间隙会使承载体 22 的实际转动轴线和第一转动轴线 L1形成夹角。 所以， 当承载体 22绕着第一转动轴线 L1转动时， 单 一的限位销不能平稳地约束承载体 22沿第一转动轴线 L1 的滑动， 承载体 22的实际转动轴线会和第一转动轴线 L1形成不断变化的夹 角， 从而， 承载体 22的固定部分 223和头部 20形成大小和方位不 断变化的夹缝。 作为结果， 高速的且往复转动的承载体 22的固定部 分 223和头部 20形成的大小和方位不断变化的夹缝可能存在夹伤口 月空组织的风险。
优选地， 在另一种未示出的实施例中， 在承载体 22的连接部分
221的外表面上周向地开设有至少一个凹槽， 例如， 可仅开设一个环 形凹槽或者开设两个以上的弧形凹槽， 相对应的， 头部 20上固定有 和凹槽相匹配的两个以上的限位销。
更优选地， 在另外一种未示出的实施例中， 可以在承载体 22的 连接部分 221 的外表面上周向地开设有至少一个凹槽， 对应地， 在 头部 20上固定有和凹槽相匹配的两个以上的限位销。 而且， 两个以 上的限位销在和第一转动轴线 U 垂直的平面上绕第一转动轴线 L1 均匀分布。
可替代地， 前述弧形凹槽 24可以开设在头部 20上， 同时， 限 位销 25可以被固定到承载体 22的连接部分 221上。 还可以理解， 可以在承载体 22的连接部分 221上设置其他限位部，同时在头部 20 上相应地设置匹配限位部， 它们可以被配置成当承载体 22转动时限 位部始终与匹配限位部接合， 以使承载体 22不能沿着头部 20的第 一转动轴线 L1滑动或者仅允许该承载体 22沿着谅头部 20的第一转 动轴线 L1做限制性的滑动，从而预防承载体 22脱离头部 20并飞出。 这对于口腔清洁工具的安全性而言是极其重要的， 因为一旦承载体 22在高速运转时飞出， 它可能伤及使用者的口腔、 舌头和 /或喉咙， 甚至有可能会极其危险地进入消化道。
图 4 为示意性地示出了根据本发明一种实施方式的电动牙刷的 部分传动杆和固定于其上的驱动轮的示意图； 图 5 为示意性地示出 了根据本发明一种实施方式的电动牙刷的清洁元件、 承载清洁元件 的承载体和与承载体相适配的驱动轮； 图 6为图 5的 B-B方向的剖 面图； 图 7为图 5的 B-B方向的剖面图， 其中， 移除了驱动轮； 图 8 为示意性地示出了根据本发明一种实施方式的电动牙刷的安装在传 动杆上的驱动轮的示意图。
结合图 3-8， 颈部 30内容纳有纵向延伸的传动杆 31 , 该传动杆 31远离头部 20的一端可操作地连接到诸如电机的驱动元件上，靠近 头部 20的一端连接到承载体 22上， 从而谅传动杆 31在驱动元件的 驱动下而以预定角度范围往复转动， 同时， 该承载体 22被传动杆 31 带动也往复转动。 具体地， 该传动杆 31 包括柄部驱动轴段 311、 头 部驱动轴段 313、将柄部驱动轴段 311和头部驱动轴段 313连接在一 起的联接件 314， 其中， 柄部驱动轴段 31 1和头部驱动轴段 313具有 相同的转动轴线 L2 (第二转动轴线） ， 而且， 该第二转动轴线 L2 与前述的承载体 22的第一转动轴线 L1基本垂直。 在本发明的示例 中， 抦部驱动轴段 31 1 围绕其第二转动轴线 L2做转动角小于 90度 的往复转动， 同时， 头部驱动轴段 313也绕第二转动轴线 L2以相同 的转动角转动。 该传动杆 31的柄部驱动轴段 31 1可以通过本领域普 通技术人员所熟知的诸如四连杆结构连接到电机上以将电机的回转 运动变成在预定角度范围内的往复转动， 在此， 因为现有技术中存 在很多诸如此类的具体机构， 故为了节省篇幅的目的本申请的所有 附图均没有详细地示出这种结构。 而且， 还应当理解， 虽然在图示 的实施例中， 通过联接件 314将柄部驱动轴段 3 H 的动能传递到头 部驱动轴段 313， 然而， 也可以采用任何能够将柄部驱动轴段 311 的往复转动传递给头部驱动轴段 313 并使之以预定角度范围往复转 动的传动机构。 传动杆 31的头部驱动轴段 313在远离驱动元件的一 端固定有驱动轮 315 , 该驱动轮 315上仅布置一个锥形齿。 如图 8所 示， 该锥形齿包括锥形齿面 315a、 315b0 相应地， 作为被谅驱动轮 315驱动的该承载体 22限定了与前述的一个锥形齿啮合的、 由一个 锥齿轮的两个彼此面对的锥形齿齿面 26、 27,这两个锥形齿齿面 26、 27限定了前述中空部分。 如图 6和图 7所示， 更详细地说， 谅承载 体 22的锥形齿齿面 26可接合驱动轮 315的锥形齿面 315a, 该承载 体 22的锥形齿齿面 27可接合驱动轮 315的锥形齿齿面 315b。 因为 锥形齿齿面 26、 27为一完整锥齿轮中彼此面对的两个锥形面， 所以 锥形齿齿面 26、 27具有相同的锥齿轮的锥点。此外，锥形齿齿面 26、 27相对于承载体 22的转动中心 0点是偏心分布的。
如图 3、 图 5、 图 9和图 12所示， 限定了前述驱动轮 315的一 个锥形齿的齿轮部分 318和承载体 22的连接部分 221被容纳在头部 20内， 即， 读驱动轮 315的限定第二接合形状的齿轮部分和承载体 22的连接部分 221被容纳在头部 20内。这样布置的优点在于能够提 高电动牙刷 100的安全性。
应当可以理解， 前述驱动轮 315的锥形齿和承载体 22的锥形齿 齿面 26、 27所构成的传动比可以根据需要被配置为任何合适值，即， 传动可以是加速的、 减速的或者等速的。 在本实施例中， 传动比为 1 :1。
也应当可以理解， 在另一种实施例中， 可以在承载体 22的连接 部分 221上设置一个锥形齿，同时，在固定于传动杆 31的驱动轮 315 上设置可与所述一个锥形齿啮合的、 一个完整锥齿轮中的两个彼此 面对的锥形齿齿面。 前述两个锥形齿齿面限定了中空部分， 为了与 两个锥形齿齿面分别接合， 前述的谅承载体 22的连接部分 221上的 一个锥形齿被置于在该中空部分内。 在这种实施例中， 限定了前述 驱动轮 315的两个锥形齿面的齿轮部分和承载体 22的连接部分 221 也被容纳在谅头部 20内， 即， 驱动轮 315的限定第二接合形状的齿 轮部分和承载体 22的连接部分 221被容纳在头部 20 内。 这样布置 的优点在于能够提供电动牙刷的安全性。
还应当可以理解，在其他实施例中 ,谅承载体 22的连接部分 221 可以限定第一接合形状， 谅传动杆 31的驱动轮 315可以限定有与谅 第一接合形状相互配合的第二接合形状， 以使该承载体 22可被该驱 动轮 315驱动。 第一接合形状包括但不限于前述两个锥形齿齿面或 一个锥形齿所限定的形状， 同理， 第二接合形状包括但不限于前述 一个锥形齿或两个锥形齿齿面所限定的形状。 例如， 谅第一接合形 状可以为由蝸杆所限定的形状， 相应地， 谅第二接合形状可以为由 与前述蜗杆配合的涡轮所限定的形状。
当使用者将电动牙刷 100的柄部 10上的开关 11置于开启位置 时， 容纳于电动牙刷 100的柄部 10内的电机被启动， 电机通过熟知 的传动组件驱动该柄部驱动轴段 311，谊柄部驱动轴段 311通过联接 件 314将动能传递给头部驱动轴段 313 ,驱动轮 315被头部驱动轴段 313带动。 结果， 由柄部驱动轴段 31 1、 头部驱动轴段 313和联接件 314组合而成的传动杆 31带动固定于远离驱动元件的端部的驱动轮 315绕第二转动轴线 L2以通常小于 90度 （典型地， 约 60度） 的预 定转动角度范围而往复转动。 当驱动轮 315绕第二转动轴线 L2做逆 时针转动时， 驱动轮 315的锥形齿齿面 315a压动承载体 22的锥形 齿齿面 26, 承载体 22绕第一转动轴线 L1做顺时针转动； 当驱动轮 315绕第二转动轴线 L2做顺时针转动时， 驱动轮 315的锥形齿齿面 315b压动承载体 22的锥形齿齿面 27,承载体 22绕第一转动轴线 L1 做逆时针转动。 无论朝哪个方向转动， 驱动轮 315和 载体 22之间 的动能传递都是通过彼此接合的驱动轮 315 的锥形齿齿面和承载体 22的锥形齿齿面来完成的。 清洁元件 21随着承载体 22绕第一转动 轴线 L1的往复转动而对清洁表面 （诸如牙齿表面）执行清洁动作。
本发明不以任何方式限制于在说明书和附图中呈现的示例 ' !·生实 施方式。 示出以及描述的实施方式 （的部分） 的所有组合明确地理 解为并入谅说明书之内并且明确地理解为落入本发明的范围内。 而 且， 在如权利要求书概括的本发明的范围内， 很多变形是可能的。 此外， 不应该将权利要求书中的任何参考标记构造为限制本发明的 范围。 例如， 前述的 "个人清洁工具，， 并不限于上文示例性的电动 牙刷， 它可以包括诸如电动剃须刀。 本领域普通技术人员容易理解， 一方面， 由于执行剃须的清洁元件为刀片， 故当将前文述及电动牙 刷变形为电动剃须刀时需要对清洁元件进行适当的变形， 另一方面， 由于剃须时作为清洁元件的刀片的往复运动速度应当比刷牙时作为 清洁元件的刷毛的运动速度更快， 则传动方式可以变形为加速传动 方式。 前述的 "个人清洁工具" 也可以包括电动鞋刷， 这种电动鞋 刷可以去除鞋面的灰尘或者对鞋面打油。 本领域普通技术人员应当 很容易理解， 这种电动鞋刷的工作原理与电动牙刷非常类似， 除了 可能根据实际需要对清洁元件做出一些适应性变形外。
本发明不以任何方式限制于在说明书和附图中呈现的示例性实 施方式。 示出以及描述的实施方式 （的部分） 的所有组合明确地理 解为并入读说明书之内并且明确地理解为落入本发明的范围内。 而 且， 在如权利要求书概括的本发明的范围内， 很多变形是可能的。 范围。

Claims

权 利 要 求 书
1. 一种个人电动清洁工具， 其包括：
柄部， 其容纳有驱动元件；
头部， 其连接有承载清洁元件的承载体， 所述承载体限定了第 一接合形状；
传动杆， 其远离所述头部的一端可操作地连接到所述驱动元件， 其靠近所述头部的一端固定有限定了与所述第一接合形状适配的第 二接合形状的驱动轮， 以使得当所述传动杆被所述驱动元件驱动时 所述承载体随所述驱动轮而往复转动；
其中， 所述第一接合形状和所述第二接合形状的其中之一为由 一个锥齿轮上两个彼此面对的锥形齿齿面所限定的形状， 所述第一 接合形状和所述第二接合形状的另一个为与所述两个锥形齿齿面啮 合的一个锥形齿所限定的形状。
2. 根据权利要求 1所述的个人电动清洁工具， 其中， 所述承载 体设有限位部， 所述头部相应地设有匹配限位部， 所述限位部和匹 配限位部被配置为当所述承载体在所述传动杆的转动而随动时所述 限位部始终与所述匹配限位部接合， 从而允许所述承载体绕其转动 轴线转动的同时防止所述承载体脱离所述头部。
3. 根据权利要求 2所述的个人电动清洁工具， 其中， 所述限位 部为凹槽， 所述匹配限位部为限位销， 所述凹槽周向地开设在所述 承载体的连接部分的外表面上， 所述限位销的一端固定到所述头部 上另一端凸伸到所述头部内并被容纳到所述凹槽内。
4. 根据权利要求 3所述的个人电动清洁工具， 其中， 所述限位 销的数目为至少两个。
5. 根据权利要求 4所述的个人电动清洁工具， 其中， 至少两个 所述限位销在与所述承载体的第一转动轴线相垂直的平面上绕所述 承载体的第一转动轴线均勾分布。
6. 根据权利要求 1所述的个人电动清洁工具， 其中， 所述驱动 轮的限定所述第二接合形状的齿轮部分和所述承载体的连接部分被 容纳在所述头部内。
7. 根据权利要求 1所述的个人电动清洁工具， 其中， 所述传动 杆的转动角度不大于 90度， 相应地， 所述承载体的转动角度也不大 于 90度。
8. 根据权利要求 1所述的个人电动清洁工具， 其中， 所述承载 体绕着第一转动轴线随动， 所述传动杆绕着第二转动轴线转动， 所 述第一转动轴线基本上垂直于所述第二转动轴线。
9. 根据权利要求 1所述的个人电动清洁工具， 其中， 所述个人 电动清洁工具为口腔清洁工具。
10. 根据权利要求 9所述的个人电动清洁工具， 其中， 所述口腔 清洁工具为电动牙刷。
11. 根椐权利要求 10所述的个人电动清洁工具， 其中， 所述清 洁元件为刷毛。
12. 根据权利要求 1所述的个人电动清洁工具， 其中， 所述个人 电动清洁工具为电动剃须刀或者电动鞋刷。
PCT/CN2014/071784 2014-01-29 2014-01-29 一种个人电动清洁工具 WO2015113264A1 (zh)

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