WO2022105145A1 - 牙刷 - Google Patents

牙刷 Download PDF

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Publication number
WO2022105145A1
WO2022105145A1 PCT/CN2021/092432 CN2021092432W WO2022105145A1 WO 2022105145 A1 WO2022105145 A1 WO 2022105145A1 CN 2021092432 W CN2021092432 W CN 2021092432W WO 2022105145 A1 WO2022105145 A1 WO 2022105145A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic member
turntable
toothbrush
handle
brush head
Prior art date
Application number
PCT/CN2021/092432
Other languages
English (en)
French (fr)
Inventor
徐振武
戴晓国
张常进
张红涛
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 EP21893301.8A priority Critical patent/EP4248791A4/en
Priority to US18/253,213 priority patent/US20230404727A1/en
Priority to JP2023529957A priority patent/JP2023549281A/ja
Priority to CA3202066A priority patent/CA3202066A1/en
Publication of WO2022105145A1 publication Critical patent/WO2022105145A1/zh

Links

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
    • A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0062—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being flexible or resilient during use
    • A46B5/007—Inserts made of different material, e.g. springs, plates
    • 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
    • A46B15/0012—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means with a pressure controlling device
    • 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
    • A46B15/0038—Arrangements for enhancing monitoring or controlling the brushing process with signalling means
    • A46B15/004—Arrangements for enhancing monitoring or controlling the brushing process with signalling means with an acoustic signalling means, e.g. noise
    • 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
    • A46B15/0038—Arrangements for enhancing monitoring or controlling the brushing process with signalling means
    • A46B15/0044—Arrangements for enhancing monitoring or controlling the brushing process with signalling means with light signalling means
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present application relates to the field of oral care, and in particular, to a toothbrush.
  • the force of the toothbrush to clean the teeth comes from the pressing and pushing force of the human hand.
  • the user may unknowingly increase the pressing force of the hand due to the desire for better cleaning effect, so that the teeth are subjected to a pressing force that exceeds the cleaning requirement, and the pressing force may cause abrasion of the enamel.
  • the neck of the tooth (where the teeth and gums meet), where this pressure is more likely to cause discomfort and damage.
  • One of the purposes of the embodiments of the present application is to improve the situation that the teeth are damaged due to too forceful brushing.
  • a toothbrush comprising:
  • the handle is placed upright and its long side is extended up and down;
  • connection structure includes a first turntable and a second turntable which are coaxially arranged and can rotate relatively, the first turntable is connected with the brush head and the second turntable is connected with the handle, or the second turntable is connected with the brush head.
  • the brush head is connected and the first turntable is connected with the handle, and the rotation axes of the first turntable and the second turntable are perpendicular to the extension direction of the handle;
  • the elastic structure includes a first elastic member and a second elastic member, one end of the first elastic member is connected or abutted with the first turntable and the other end is connected with the second turntable, and one end of the second elastic member is connected to the second turntable.
  • the first turntable is connected or abutted and the other end is connected with the second turntable; or, one end of the first elastic member is connected with the first turntable and the other end is connected or abutted with the second turntable, so One end of the second elastic member is connected with the first turntable and the other end is connected or abutted with the second turntable.
  • the first elastic member and/or the second elastic member are elastically deformed to drive the first turntable after the external force is removed Elastic restoring force for counter-rotation reset.
  • the rotation axis is perpendicular or parallel to the extending direction of the bristles.
  • first elastic member and the second elastic member are both strip-shaped structures and integrally provided, and the first elastic member and the second elastic member are connected to the first turntable at the connection point.
  • the second turntable is provided with a card block with a card slot
  • the first elastic member and the second elastic member are clamped with the card slot at the connection point.
  • the first turntable is provided with a first convex column and a second convex column, and the first convex column and the second convex column abut the first elastic member and the second elastic member respectively .
  • the free ends of the first elastic member and the second elastic member are located between the first protrusion and the second protrusion.
  • the first elastic member and the second elastic member are both strip-shaped, and the first elastic member has a first arc-shaped segment with an arc center facing the rotation axis and a first convex column. the second arc segment.
  • a surface of the second turntable facing the first turntable is provided with a rotating drum, and the first turntable is sleeved on the rotating drum and rotates around the rotating drum;
  • the connecting structure further includes a buckling piece, the buckling piece is buckled and connected with the second turntable to form an accommodating cavity for accommodating the first turntable, the buckling piece and/or the second turntable
  • the turntable is provided with an escape hole for avoiding the connection between the first turntable and the brush head.
  • the fastener and/or the second turntable is provided with a drainage hole communicating with the accommodating cavity.
  • the toothbrush further includes a sensing structure for detecting the pressure of the brush head.
  • the beneficial effect of the toothbrush provided by the present application is that the toothbrush provided by the present application can improve the situation that the teeth are damaged due to too forceful brushing, and have the effect of protecting the teeth.
  • FIG. 1 is a schematic diagram 1 of a toothbrush provided by an embodiment of the application, wherein the rotation axis is parallel to the extending direction of the bristles;
  • FIG. 2 is a schematic diagram of a partial disassembly of the toothbrush provided by the embodiment of the present application;
  • FIG. 3 is a schematic diagram of the connection between the elastic structure and the connection structure in the embodiment of the application;
  • FIG. 4 is a schematic diagram of an elastic structure in an embodiment of the application.
  • FIG. 5 is a schematic diagram of mechanical analysis of the first elastic member when the brush head rotates in the embodiment of the present application.
  • the toothbrush includes a handle 10 , a brush head 20 , a connecting structure 30 and an elastic structure 40 .
  • the brush head 20 and the handle 10 are arranged up and down, the brush head 20 and the handle 10 are connected by a connection structure 30 , and the connection structure 30 realizes relative rotation.
  • the elastic structure 40 is used for elastic deformation when the brush head 20 and the handle 10 are rotated, and drives the brush head 20 to return after the external force disappears.
  • the elastic deformation of the elastic structure 40 means that when the elastic structure 40 is subjected to an external force, the relative positions of the points inside the structure change, which changes the overall structure and has the ability to restore the original shape when the external force is removed.
  • the toothbrush is placed in an upright position.
  • the long side of the handle 10 is in a state of extending up and down.
  • the brush head 20 is located above the handle 10 and has bristles for brushing the teeth.
  • the connecting structure 30 includes a first turntable 31 and a second turntable 32 that are coaxially arranged and can rotate relative to each other.
  • the first turntable 31 is fixedly connected to the brush head 20 and the second turntable 32 is fixedly connected to the handle 10, or the second turntable 32 is fixedly connected to the brush head 20.
  • the head 20 is fixedly connected and the first turntable 31 is fixedly connected with the handle 10 .
  • the rotation axes of the first turntable 31 and the second turntable 32 are perpendicular to the extending direction of the handle 10 .
  • the first turntable 31 is fixedly connected to the brush head 20 and the second turntable 32 is fixedly connected to the handle 10.
  • the first turntable 31 and the second turntable 32 rotate relative to each other to realize the relative rotation of the brush head 20 and the handle 10.
  • the rotation axis is perpendicular to the extension direction of the handle 10, and the extension direction of the handle 10 is the up-down direction, and the rotation axis extends on the horizontal plane.
  • Rotation of the brush head 20 towards the handle 10 causes the bristles to deflect downward and outward from the initial position directly above the handle 10 away from the initial position.
  • the elastic structure 40 is elastically deformed when the bristles deviate from the initial position under the action of an external force, and drives the brush head 20 to reversely rotate after the external force disappears, so that the bristles return to the initial position.
  • the toothbrush when brushing the teeth, the toothbrush is generally placed horizontally, and the brush head 20 extends into the oral cavity laterally (the length direction of the toothbrush is parallel to the arrangement direction of the teeth), and sweeps the upper and lower rows of teeth longitudinally.
  • the force acting on the teeth during brushing can be expressed as the static pressure of the bristles on the teeth and the thrust force of the relative movement between the bristles and the teeth.
  • the brush head 20 rotates around the rotation axis, and the elastic member is elastically deformed, which offsets the influence of part of the force on the teeth, so that the actual pressure on the teeth is reduced.
  • Figure 1 shows the case where the axis of rotation is parallel to the direction of extension of the bristles.
  • the brush head 20 rotates in the direction indicated by M in the figure.
  • the brush head 20 rotates in the opposite direction: when the toothbrush sweeps in the direction of the upper row of teeth, the brush head 20 rotates in the direction of the lower row of teeth, correspondingly Yes, when the toothbrush sweeps in the direction of the lower row of teeth, the brush head 20 rotates in the direction of the upper row of teeth.
  • the elastic member is elastically deformed to offset this part of the thrust, so that the actual pressure on the teeth is reduced, and the effect of protecting the teeth is achieved. It should be noted that, since the deformation of the elastic member has a linear relationship with the frictional force, when the toothbrush sweeps the upper and lower rows of teeth, the actual pressure on the teeth decreases from the crown to the gum, and the pressure on the gum is the smallest. This further protects the gums.
  • the bristles When the axis of rotation is perpendicular to the extending direction of the bristles, when brushing the teeth, the bristles face the teeth and press against the teeth.
  • the brush head 20 rotates in the direction away from the teeth, and the elastic member is elastically deformed to offset part of the pressure. , so that the actual static pressure on the teeth is reduced, so as to achieve the effect of protecting the teeth.
  • the toothbrush provided in this embodiment can protect the teeth.
  • the elastic structure 40 includes a first elastic member 41 and a second elastic member 42.
  • One end of the first elastic member 41/second elastic member 42 is connected to or abuts against the first turntable 31 and the other end is connected to the second turntable 32, or the first elastic member
  • One end of the member 41/the second elastic member 42 is connected to the first turntable 31 and the other end is connected or abutted with the second turntable 32 .
  • the connection end of the first elastic member 41 and the second turntable 32 is defined as the first fixed end A, and the other end is defined as the movable end B.
  • the connecting end of the second elastic member 42 and the second turntable 32 is defined as the second fixed end, and the other end is defined as the second movable end. Both the first fixed end A and the second fixed end are offset from the axis of rotation.
  • the first turntable 31 When the first turntable 31 is rotated in a positive direction relative to the second turntable 32 due to a positive rotation external force, at least the first elastic member 41 of the first elastic member 41 and the second elastic member 42 is elastically deformed, and forms an elastic deformation of the first turntable 31
  • the first elastic restoring force has a tendency to reversely rotate relative to the second turntable 32 , wherein the first elastic restoring force drives the first turntable 31 to reversely rotate and reset when the positive rotation external force received by the first turntable 31 is removed.
  • the first turntable 31 When the first turntable 31 receives a reverse external force and rotates in the opposite direction relative to the second turntable 32 , at least the second elastic member 42 of the first elastic member 41 and the second elastic member 42 is elastically deformed, and forms the first turntable 31
  • the second elastic restoring force has a tendency to rotate in the forward direction relative to the second turntable 32 , wherein the second elastic restoring force drives the first turntable 31 to rotate and return forward when the reverse external force received by the first turntable 31 is removed.
  • the arrangement of the first elastic member 41 and the second elastic member 42 enables the first turntable 31 and the second turntable 32 to return to the initial position after the external force disappears regardless of the forward rotation or the reverse rotation.
  • the toothbrush can protect the upper and lower rows of teeth in the process of alternately brushing the upper and lower rows of teeth.
  • the first elastic member 41 and the second elastic member 42 may be a strip-shaped elastic member, a torsion spring or other structural members whose two ends can be elastically bent under stress, or a coil spring, etc., whose two ends are elastically bent under stress. Structural elements in tension or elastic compression.
  • connection between the first fixed end A, the second fixed end and the second turntable 32 , and the connection between the first movable end B and the second movable end and the first turntable 31 may be fixed connections or turn the connection.
  • FIG. 5 shows that the first elastic member 41 and the second elastic member 42 are strip-shaped structures. It is assumed that the second turntable 32 is fixed and the first turntable 31 is rotated.
  • the rotation axis is shown as the center point C on the rotation surface, the first elastic member 41 has a first fixed end A and a first movable end B, the first fixed end A is connected with the second turntable 32, and the first movable end B is connected with the first movable end B.
  • the first movable end B When the turntable 31 is connected or abutted, when the first turntable 31 rotates around the center point C and in the counterclockwise direction (the M direction in the view), the first movable end B is subjected to a force F, and under the action of the force F, it rotates around the center Point C moves from position to position. Since the first fixed end A deviates from the rotation axis, that is, the first fixed end A and the center point C do not coincide. A triangle is formed between ABC. When the point B moves from position to position, the first elastic member 41 elastically deforms and after the external force disappears, the first elastic member 41 returns from position to position under elastic restoring force to drive the first turntable 31 to rotate and reset.
  • the second elastic member 42 and the first elastic member 41 are arranged symmetrically.
  • the second elastic member 42 elastically bends and drives the first turntable 31 to reversely rotate and reset after the external force disappears.
  • the second elastic member 42 and the first elastic member 41 are symmetrically arranged so that the first elastic member 41 and the second elastic member 42 have the same value in both forward rotation and reverse rotation between the first turntable 31 and the second turntable 32 of elastic deformation.
  • the axis of rotation is parallel to the extending direction of the bristles, during the process of alternately brushing the upper and lower rows of teeth with the toothbrush, the upper and lower rows of teeth have basically the same force and cleaning effect under the same brushing force. Helps improve brushing comfort.
  • first fixed end A and the second fixed end overlap to simplify the structure.
  • first fixed end A and the second fixed end may not overlap.
  • the first elastic member 41 and the second elastic member 42 are slender strip-shaped structures, and when the extension path is a curve, the first elastic member 41 and the second elastic member 42 can be further bent or extended , in both cases can be restored to the original state under the action of its own elastic restoring force.
  • the first movable end B, the second movable end and the first turntable 31 may be movably connected, fixedly connected or abutted.
  • the first elastic member 41 and the second elastic member 42 are slender rod-shaped, and the extension path is a straight line, the first elastic member 41 and the second elastic member 42 can only be elastically bent and difficult to be extended. . 5
  • the first movable end B of the first elastic member 41 is initially located at the 1 position, and the first elastic member 41 is a straight line, because the straight line distance between the 2 position and the first fixed end A is greater than the 1 position and the first fixed end A. If the straight-line distance of the end A, it is difficult for the first movable end B to move to the 2-position position.
  • the first turntable 31 is restricted by the length of the first elastic member 41 and cannot rotate counterclockwise.
  • the second movable end is elastically deformed only when the first turntable 31 rotates clockwise, and is elastically deformed when the first turntable 31 rotates counterclockwise.
  • the second active end is separated.
  • the first elastic member 41 realizes the reset after the first turntable 31 is rotated clockwise
  • the second elastic member 42 realizes the reset after the counterclockwise rotation of the first turntable 31 .
  • first elastic member 41 and the second elastic member 42 are strip-shaped structures, and the extending paths thereof may be straight lines or curves.
  • the relationship between the first movable end B, the second movable end and the second turntable 32 is preferably abutting, so as to reduce the difficulty of structural production and processing.
  • the first turntable 31 is provided with a first protruding post 311 and a second protruding post 312 , and the first protruding post 311 and the second protruding post 312 respectively abut the first movable end B and the second movable end .
  • the first elastic member 41 and the second elastic member 42 are in contact with the first protruding post 311 and the second protruding post 312 respectively.
  • first turntable 31 rotates clockwise
  • first protruding post 311 presses against the first elastic member 41 and The first elastic member 41 is elastically deformed.
  • second turntable 32 rotates counterclockwise
  • the second protruding column 312 presses against the second elastic member 42 so that the second elastic member 42 is elastically deformed.
  • the first elastic member 41 and the second elastic member 42 are both rod-shaped and integrally disposed, and the connection between the first elastic member 41 and the second elastic member 42 is the first elastic member 41 and the second elastic member 42 .
  • the second turntable 32 is provided with a locking block 321 , and the locking block 321 has a locking slot.
  • the first elastic member 41 and the second elastic member 42 are connected and clamped with the slot at the connection.
  • the first elastic member 41 and the second elastic member 42 are generally U-shaped as a whole, and are snap-connected to the card slot at the first fixed end A.
  • the slot restricts the movement of the elastic structure 40 in the horizontal plane, including the movement in the left-right direction and the front-rear direction. This arrangement is beneficial to simplify the structure and facilitate the operation.
  • first protruding post 311 and the second protruding post 312 are cylindrical. In other embodiments, the first protruding post 311 and the second protruding post 312 may also be truncated or other shapes, which are not limited herein.
  • the free ends of the first elastic member 41 and the second elastic member 42 are located between the first protruding post 311 and the second protruding post 312 .
  • the free ends of the first elastic member 41 and the second elastic member 42 may also be located outside the first protruding post 311 and the second protruding post 312 .
  • the first elastic member 41 has a first arc-shaped segment 411 whose arc center faces the rotation axis and a second arc-shaped segment 412 whose arc center faces the first protruding post 311 (first movable end B) .
  • the first elastic member 41 and the second elastic member 42 are symmetrical, the first convex column 311, the second convex column 312 and the clamping groove of the clamping block 321 jointly clamp the elastic structure 40 inside, the first arc section 411 and the second
  • the arrangement of the arc-shaped segment 412 is beneficial to improve the connection tightness of the elastic structure 40 as a whole with the first turntable 31 and the second turntable 32 .
  • the surface of the second turntable 32 facing the first turntable 31 is provided with a revolving cylinder 322, and the first turntable 31 is sleeved on the revolving cylinder 322 and rotates around the revolving cylinder 322;
  • connection structure 30 further includes a buckling member 33, the buckling member 33 is buckled and connected with the second turntable 32 to sandwich the first turntable 31 inside, and the buckling member 33 and/or the second turntable 32 are provided with a space to avoid the first turntable.
  • 31 is an escape hole 301 connected to the brush head 20 .
  • the second turntable 32 is buckled and connected to the snap-fit member 33 to form an accommodating cavity for accommodating the first turntable 31 .
  • the first turntable 31 is placed in the accommodating cavity and sleeved on the outer side of the rotating drum 322 .
  • the central axis of the drum 322 is the rotation axis.
  • the brush head 20 is connected to the first turntable 31 through the avoidance hole 301 through the connecting piece or the brush head 20 itself.
  • the avoidance hole 301 limits the maximum rotation angle of the brush head 20 and the handle 10 .
  • the fastener 33 and/or the second turntable 32 are provided with drainage holes 302 communicating with the accommodating cavity.
  • the drain hole 302 has two side-by-side parallels on both sides of the handle 10 . The arrangement of the drainage holes 302 enables the water in the accommodating cavity to be drained in time.
  • the toothbrush further includes a sensing structure for detecting the pressure of the brush head 20 .
  • the sensing structure senses the pressure on the brush head 20 , and when the sensed pressure is greater than a set threshold, an alarm signal is sent out through visible light or sound to remind the user to appropriately reduce the pressure on the toothbrush.

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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)
  • Brushes (AREA)

Abstract

一种牙刷，包括：手柄（10）；刷头（20）；连接结构（30），包括同轴转动的第一转盘（31）和第二转盘（32），第一转盘（31）与刷头（20）/手柄（10）连接而第二转盘（32）与手柄（10）/刷头（20）连接，第一转盘（31）和第二转盘（32）的转动轴线垂直于手柄（10）的延伸方向；弹性结构（40）包括第一弹性件（41）和第二弹性件（42），第一弹性件（41）和第二弹性件（42）的两端分别与第一转盘（31）、第二转盘（32）连接或抵接；在第一转盘（31）受到外力而相对第二转盘（32）转动时，第一弹性件（41）和/或第二弹性件（42）发生弹性形变。

Description

牙刷
本申请要求于2020年11月18日在中国专利局提交的、申请号为  202022678200.6、发明名称为“牙刷”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及口腔护理领域，尤其涉及一种牙刷。
 背景技术
牙刷在使用时，牙刷清洁牙齿的作用力来自人手的按压和推动力。在刷牙时，使用者可能由于希望更好的清洁效果而不自觉增加人手的按压力度，使得牙齿受到超过清洁所需的压迫力，该压迫力可能带来牙釉质的磨损，对于更为薄弱的牙颈部（牙齿和牙龈交接的部位），该压迫力更容易带来不适和损伤。
 技术问题
本申请实施例的目的之一在于：改善因为刷牙太用力而损伤牙齿的情况。
 技术解决方案
为解决上述技术问题，本申请实施例采用的技术方案是：
一种牙刷，包括：
手柄，呈竖立放置而其长边呈上下延伸状态；
刷头，具有用于刷扫牙齿的刷毛；
连接结构，包括同轴设置并能够相对转动的第一转盘和第二转盘，所述第一转盘与所述刷头连接而所述第二转盘与所述手柄连接，或所述第二转盘与所述刷头连接而所述第一转盘与所述手柄连接，所述第一转盘和所述第二转盘的转动轴线垂直于所述手柄的延伸方向；
弹性结构包括第一弹性件和第二弹性件，所述第一弹性件一端与所述第一转盘连接或抵接而另一端与所述第二转盘连接，所述第二弹性件一端与所述第一转盘连接或抵接而另一端与所述第二转盘连接；或，所述第一弹性件一端与所述第一转盘连接而另一端与所述第二转盘连接或抵接，所述第二弹性件一端与所述第一转盘连接而另一端与所述第二转盘连接或抵接。
在所述第一转盘受到外力而相对所述第二转盘转动时，所述第一弹性件和/或所述第二弹性件发生弹性形变以形成在所述外力撤销后驱使所述第一转盘反向转动复位的弹性恢复力。
可选的，所述转动轴线垂直或平行于所述刷毛的延伸方向。
可选的，所述第一弹性件和所述第二弹性件均为条状结构并一体设置，所述第一弹性件和所述第二弹性件于连接处与所述第一转盘连接。
可选的，所述第二转盘设有具有卡槽的卡块；
所述第一弹性件和所述第二弹性件于连接处与所述卡槽卡接。
可选的，所述第一转盘设有第一凸柱和第二凸柱，所述第一凸柱和所述第二凸柱分别抵接所述第一弹性件和所述第二弹性件。
可选的，所述第一弹性件和所述第二弹性件的自由端位于所述第一凸柱和所述第二凸柱之间。
可选的，所述第一弹性件和所述第二弹性件均为条状，所述第一弹性件具有弧心朝向所述转动轴线的第一弧形段和朝向所述第一凸柱的第二弧形段。
可选的，所述第二转盘朝向所述第一转盘的表面设有转筒，所述第一转盘套设于所述转筒并绕所述转筒转动；
所述连接结构还包括扣合件，所述扣合件与所述第二转盘扣合连接而形成容置所述第一转盘的容置腔，所述扣合件和/或所述第二转盘开设有避让所述第一转盘与所述刷头连接的避让孔。
可选的，所述扣合件和/或所述第二转盘开设有连通所述容置腔的排水孔。
可选的，所述牙刷还包括用于检测所述刷头压力的感应结构。
 有益效果
本申请提供的牙刷的有益效果在于：本申请提供的牙刷，能够改善因为刷牙太用力而损伤牙齿的情况而起到保护牙齿的效果。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或示范性技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为本申请实施例提供的牙刷的示意图一，其中，转动轴线与刷毛的延伸方向平行；
图2为本申请实施例提供的牙刷的部分拆解示意图；
图3为本申请实施例中弹性结构和连接结构连接示意图；
图4为本申请实施例中弹性结构的示意图；
图5为本申请实施例中第一弹性件在刷头转动时的力学分析示意图。
其中，图中各附图标记：
10、手柄；20、刷头；30、连接结构；31、第一转盘；311、第一凸柱；312、第二凸柱； 32、第二转盘；321、卡块； 322、转筒；33、扣合件；301、避让孔；302、排水孔；40、弹性结构；A、第一固定端；B、第一活动端；41、第一弹性件；411、第一弧形段；412、第二弧形段；42、第二弹性件。
 本发明的实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请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用以解释本申请，并不用于限定本申请。
需说明的是，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间接在该另一个部件上。当一个部件被称为是“连接于”另一个部件，它可以是直接或者间接连接至该另一个部件上。术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。术语“第一”、“第二”仅用于便于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明技术特征的数量。“多个”的含义是两个或两个以上，除非另有明确具体的限定。
请参照图1至图5，现对本申请提供的牙刷进行示例性说明。牙刷包括手柄10、刷头20、连接结构30和弹性结构40。
刷头20和手柄10上下设置，刷头20和手柄10之间通过连接结构30连接，并通过连接结构30实现相对转动。弹性结构40用于在刷头20和手柄10转动时发生弹性形变并在外力消失后驱使刷头20复位。弹性结构40发生弹性形变是指弹性结构40在受到外力作用时，结构内部各点间相对位置发生改变，而使整体结构外形改变，并具有在当外力撤消后恢复原状的能力。
为便于描述，将牙刷呈立式放置。手柄10的长边呈上下延伸状态。
刷头20位于手柄10的上方，并具有用于刷扫牙齿的刷毛。
连接结构30包括同轴设置并能够相对转动的第一转盘31和第二转盘 32，第一转盘31与刷头20固定连接而第二转盘 32与手柄10固定连接，或第二转盘 32与刷头20固定连接而第一转盘31与手柄10固定连接，第一转盘31和第二转盘 32的转动轴线垂直于手柄10的延伸方向。图示结构中，第一转盘31与刷头20固定连接而第二转盘 32与手柄10固定连接。
第一转盘31和第二转盘 32相对转动而实现刷头20和手柄10的相对转动。转动轴线垂直于手柄10的延伸方向，手柄10延伸方向为上下方向，则转动轴线在水平面上延伸。刷头20向手柄10方向转动而使刷毛从位于手柄10正上方的初始位置向下向外方向偏转而远离初始位置。弹性结构40在刷毛受到外力作用而偏离初始位置时发生弹性形变，并在外力消失后驱使刷头20反向转动而使梳毛回复至初始位置。
结合刷牙操作，在刷牙时，牙刷大体呈水平放置，刷头20横向（牙刷的长度方向平行于牙齿排列方向）伸入口腔内，并沿纵向刷扫上下排牙齿。需要说明的是，刷牙时对牙齿的作用力，可表现为牙齿受到刷毛的静压力和刷毛与牙齿之间相对移动的推力。
在施压过大的情况下，刷头20绕转动轴线转动，弹性件发生弹性形变，而抵消部分作用力对牙齿的影响，使得牙齿实际受到的压力有所降低。
附图1给出转动轴线与刷毛的延伸方向平行的情况。转动轴线平行于刷毛的延伸方向时，刷头20沿图中M所示方向转动。假设牙刷以固定的推力从中间交替向上排牙齿和下排牙齿方向刷扫，刷头20向相反的方向转动：牙刷向上排牙齿的方向刷扫时，刷头20朝下排牙齿方向转动，相应的，牙刷向下排牙齿的方向刷扫时，刷头20朝上排牙齿方向转动。弹性件发生弹性形变而抵消该部分推力，使得牙齿受到的实际压力有所降低，达到保护牙齿的作用。需要另外说明的是，由于弹性件的形变量与摩擦力成线性关系，使得牙刷在刷扫上下排牙齿时，牙齿受到的实际压力从牙冠到牙龈的方向递减，牙龈处受到的压力最小，从而进一步起到保护牙龈的效果。
在转动轴线与刷毛延伸方向垂直的情况下，刷牙时，刷毛朝向牙齿并抵压牙齿，在静压力过大的情况下刷头20向背离牙齿的方向转动，弹性件发生弹性形变而抵消部分压力，使得牙齿受到的实际静压力有所减小，从而达到保护牙齿的效果。
由上分析，本实施例提供的牙刷，能够起到保护牙齿的效果。
弹性结构40包括第一弹性件41和第二弹性件42，第一弹性件41/第二弹性件42一端连接或抵接第一转盘31而另一端与第二转盘 32连接，或第一弹性件41/第二弹性件42一端连接第一转盘31而另一端与第二转盘 32连接或抵接。为便于描述，将第一弹性件41与第二转盘32的连接端定义为第一固定端A，而将另一端定义为活动端B。将第二弹性件42与第二转盘32 连接端定义为第二固定端，而另一端定义为第二活动端。第一固定端A和第二固定端均偏离转动轴线。
在第一转盘31受到正转外力而相对于第二转盘 32正向转动时，第一弹性件41和第二弹性件42中至少第一弹性件41发生弹性形变，并形成使第一转盘31具有相对于第二转盘 32反向转动的趋势的第一弹性复位力，其中，第一弹性恢复力在第一转盘31受到的正转外力撤销时驱动第一转盘31反向转动复位。
在第一转盘31受到反向外力而相对于第二转盘 32反向转动时，第一弹性件41和第二弹性件42中至少第二弹性件42发生弹性形变，并形成使第一转盘31具有相对于第二转盘 32正向转动的趋势的第二弹性复位力，其中，第二弹性恢复力在第一转盘31受到的反转外力撤销时驱动第一转盘31正向转动复位。
第一弹性件41和第二弹性件42的设置使得第一转盘31和第二转盘 32无论正向转动还是反向转动均能够在外力消失后回复至初始位置。结合前述，在转动轴线与刷毛的延伸方向平行时，牙刷交替向上下排牙齿刷扫的过程中，均能起到保护上下排牙齿的效果。
第一弹性件41和第二弹性件42可以为条状弹性件、扭簧等两端在受力情况下能够发生弹性弯曲的结构件，或者如螺旋弹簧等两端在受力情况下被弹性拉伸或弹性压缩的结构件。
需要说明的是，本实施例中，第一固定端A、第二固定端与第二转盘 32的连接，以及第一活动端B、第二活动端与第一转盘31的连接可以为固定连接或转动连接。
请结合图5，图中示出第一弹性件41和第二弹性件42为条状结构的情况。假设第二转盘 32固定而第一转盘31转动。转动轴线在转动面上显示为中心点C，第一弹性件41具有第一固定端A和第一活动端B，第一固定端A与第二转盘 32连接，第一活动端B与第一转盘31连接或抵接，第一转盘31绕中心点C并沿逆时针方向（视图中M方向）转动时，第一活动端B受到作用力F，并在该作用力F的作用下绕中心点C从位置移动至位置。由于第一固定端A偏离旋转轴线，即第一固定端A和中心点C不重合。ABC之间呈三角形。在B点从位置移动至位置时，第一弹性件41发生弹性形变并在外力消失后，第一弹性件41在弹性恢复力下从位置回复至位置而驱使第一转盘31旋转复位。
第二弹性件42和第一弹性件41对称设置。第一转盘31绕中心点C并沿逆时针方向转动时，第二弹性件42发生弹性弯曲并在外力消失后驱使第一转盘31反向旋转复位。第二弹性件42和第一弹性件41对称设置使得第一弹性件41和第二弹性件42在第一转盘31与第二转盘 32之间正向转动和反向转动两种情况下具有同等的弹性形变量。结合前述，在转动轴线与刷毛的延伸方向平行时，牙刷交替向上下排牙齿刷扫的过程中，同样的刷扫力度的情况下，上下排牙齿具有基本相同的受力情况和清扫效果，以利于提高刷牙舒适度。
图5所示结构中，第一固定端A和第二固定端重合，以简化结构。在其它实施例中，第一固定端A和第二固定端也可以不重合。
请参照图5，第一弹性件41和第二弹性件42为细长的条状结构，且其延伸路径为曲线时，第一弹性件41和第二弹性件42能够被进一步弯曲或被延展，在这两种情况下均能够在自身弹性恢复力作用下回复原状。在该情况下，第一活动端B、第二活动端与第一转盘31之间可以为活动连接、固定连接或抵接。
而如果第一弹性件41和第二弹性件42为细长的杆状，而其延伸路径为直线的情况下，第一弹性件41和第二弹性件42只能被弹性弯曲而难以被延展。结合附图5，假设第一弹性件41初始时第一活动端B位于1位置，而第一弹性件41为直线，由于2位置与第一固定端A的直线距离大于1位置与第一固定端A的直线距离，则第一活动端B难以移动至2位置的位置。如果第一活动端B与第一转盘31之间为固定连接或转动连接的关系，则第一转盘31受到第一弹性件41长度的限制而不能绕逆时针转动。而如果第一活动端B与第一转盘31之间为抵接关系，第二活动端只在第一转盘31顺时针方向转动的时候发生弹性形变，而在第一转盘31逆时针转动时与第二活动端分离。此时，第一弹性件41实现第一转盘31顺时针转动后的复位而第二弹性件42实现对第一转盘31逆时针转动后的复位。
由上，第一弹性件41和第二弹性件42为条状结构，其延伸路径可以为直线或曲线。第一活动端B、第二活动端与第二转盘 32之间的关系优选为抵接，以降低结构生产加工难度。
需要说明的是，第一活动端B、第二活动端均与第一转盘31抵接时，第一活动端B、第二活动端的转动路径限制为绕中心点C转动。该技术效果通过以下方式实现：
请参照图2和图3，第一转盘31设有第一凸柱311和第二凸柱312，第一凸柱311和第二凸柱312分别抵接第一活动端B和第二活动端。
第一弹性件41和第二弹性件42分别与第一凸柱311和第二凸柱312抵接，在第一转盘31顺时针转动时，第一凸柱311抵压第一弹性件41而使第一弹性件41发生弹性形变。在第二转盘 32逆时针转动时，第二凸柱312抵压第二弹性件42而使第二弹性件42发生弹性形变。
在本申请另一实施例中，请参照图4，第一弹性件41和第二弹性件42均为杆状结构并一体设置，第一弹性件41和第二弹性件42的连接处为第一固定端A/第二固定端。第一固定端A和第二固定端重合而使第二转盘32仅需要设置一个固定结构，从而有利于简化结构。
在本申请另一实施例中，请参照图3和图4，第二转盘32设有卡块321，卡块321具有卡槽。第一弹性件41和第二弹性件42连接并于连接处与卡槽卡接。第一弹性件41和第二弹性件42作为一个整体，整体大致呈U形，而在第一固定端A处与卡槽卡合连接。卡槽限制弹性结构40在水平面的移动，包括左右方向和前后方向的移动。该设置有利于简化结构、便利操作。
请参照图2，第一凸柱311和第二凸柱312圆柱状。在其它实施例中，第一凸柱311和第二凸柱312也可以为圆台状或其它形状，在此不作限定。
请参照图3，第一弹性件41和第二弹性件42的自由端位于第一凸柱311和第二凸柱312之间。在其它实施例中，第一弹性件41和第二弹性件42的自由端也可以位于第一凸柱311和第二凸柱312的外侧。
请一并参照图4，第一弹性件41具有弧心朝向转动轴线的第一弧形段411和弧心朝向所述第一凸柱311的第二弧形段412（第一活动端B）。第一弹性件41和第二弹性件42对称，第一凸柱311、第二凸柱312和卡块321的卡槽共同将弹性结构40卡设于内，第一弧形段411和第二弧形段412的设置，有利于提高弹性结构40整体与第一转盘31和第二转盘 32的连接紧固性。
在本申请另一实施例中，请参照图2，第二转盘 32朝向第一转盘31的表面设有转筒322，第一转盘31套设于转筒322并绕转筒322转动；
连接结构30还包括扣合件33，扣合件33与第二转盘 32扣合连接而将第一转盘31夹设于内，扣合件33和/或第二转盘 32开设有避让第一转盘31与刷头20连接的避让孔301。
第二转盘 32和扣合件33扣合连接，而形成容置第一转盘31的容置腔。第一转盘31置于该容置腔且套设于转筒322的外侧。转筒322的中心轴线即为转动轴线。刷头20通过连接件或刷头20本身穿过避让孔301与第一转盘31连接。避让孔301限制刷头20和手柄10的最大转动角度。
请参照图2和图3，扣合件33和/或第二转盘 32开设有连通容置腔的排水孔302。在使用时，外界的水可能通过避让孔301进入容置腔。图示结构中，排水孔302有两个并分列手柄10的两侧。排水孔302的设置使得容置腔内的水能够及时排出。
在本申请另一实施例中，牙刷还包括用于检测刷头20压力的感应结构。感应结构感测刷头20受到的压力，在感测到的压力大于设定阀值时通过可见光或声音的方式发出警号信号，以提醒使用者适当降低对牙刷所施压的压力。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换或改进等，均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种牙刷，其特征在于，包括：
    手柄，呈竖立放置而其长边呈上下延伸状态；
    刷头，具有用于刷扫牙齿的刷毛；
    连接结构，包括同轴设置并能够相对转动的第一转盘和第二转盘，所述第一转盘与所述刷头/所述手柄连接而所述第二转盘与所述手柄/所述刷头连接，所述第一转盘和所述第二转盘的转动轴线垂直于所述手柄的延伸方向；
    弹性结构包括第一弹性件和第二弹性件，所述第一弹性件/所述第二弹性件一端与所述第一转盘连接或抵接而另一端与所述第二转盘连接，或，所述第一弹性件/所述第二弹性件一端与所述第一转盘连接而另一端与所述第二转盘连接或抵接；
    在所述第一转盘受到外力而相对所述第二转盘转动时，所述第一弹性件和/或所述第二弹性件发生弹性形变以形成在所述外力撤销后驱使所述第一转盘反向转动复位的弹性恢复力。
  2. 如权利要求1所述的牙刷，其特征在于，所述转动轴线垂直或平行于所述刷毛的延伸方向。
  3. 如权利要求2所述的牙刷，其特征在于，所述第一弹性件和所述第二弹性件为条状结构，其延伸路径可以为直线或曲线。
  4. 如权利要求2所述的牙刷，其特征在于，所述第二弹性件和所述第一弹性件对称设置。
  5. 如权利要求2所述的牙刷，其特征在于，所述第一弹性件和所述第二弹性件均为条状结构并一体设置，所述第一弹性件和所述第二弹性件于连接处与所述第一转盘连接。
  6. 如权利要求5所述的牙刷，其特征在于，所述第二转盘设有具有卡槽的卡块；所述第一弹性件和所述第二弹性件于连接处与所述卡槽卡接。
  7. 如权利要求5所述的牙刷，其特征在于，所述第一转盘设有第一凸柱和第二凸柱，所述第一凸柱和所述第二凸柱分别抵接所述第一弹性件和所述第二弹性件。
  8. 如权利要求7所述的牙刷，其特征在于，所述第一弹性件和所述第二弹性件的自由端位于所述第一凸柱和所述第二凸柱之间。
  9. 如权利要求7所述的牙刷，其特征在于，所述第一凸柱和所述第二凸柱圆柱状。
  10. 如权利要求8所述的牙刷，其特征在于，所述第一弹性件和所述第二弹性件均为条状，所述第一弹性件具有弧心朝向所述转动轴线的第一弧形段和朝向所述第一凸柱的第二弧形段。
  11. 如权利要求2所述的牙刷，其特征在于，所述第一弹性件和所述第二弹性件为螺旋弹簧或扭簧。
  12. 如权利要求1所述的牙刷，其特征在于，所述第二转盘朝向所述第一转盘的表面设有转筒，所述第一转盘套设于所述转筒并绕所述转筒转动；
    所述连接结构还包括扣合件，所述扣合件与所述第二转盘扣合连接而形成容置所述第一转盘的容置腔，所述扣合件和/或所述第二转盘开设有避让所述第一转盘与所述刷头连接的避让孔。
  13. 如权利要求12所述的牙刷，其特征在于，所述扣合件和/或所述第二转盘开设有连通所述容置腔的排水孔。
  14. 如权利要求13所述的牙刷，其特征在于，所述排水孔有两个并分列所述手柄的两侧。
  15. 如权利要求1至14任一所述的牙刷，其特征在于，所述牙刷还包括用于检测所述刷头压力的感应结构。
PCT/CN2021/092432 2020-11-18 2021-05-08 牙刷 WO2022105145A1 (zh)

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EP21893301.8A EP4248791A4 (en) 2020-11-18 2021-05-08 TOOTHBRUSH
US18/253,213 US20230404727A1 (en) 2020-11-18 2021-05-08 Toothbrush
JP2023529957A JP2023549281A (ja) 2020-11-18 2021-05-08 歯ブラシ
CA3202066A CA3202066A1 (en) 2020-11-18 2021-05-08 Toothbrush

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US5499422A (en) * 1995-01-05 1996-03-19 Lavazoli; Rudi Rotating head tooth brush
CN2593630Y (zh) * 2002-12-03 2003-12-24 陈文雷 弹力旋转牙刷
CN203828321U (zh) * 2014-01-14 2014-09-17 段永新 一种牙刷
CN204048574U (zh) * 2014-07-02 2014-12-31 段永新 一种牙刷
CN205072337U (zh) * 2015-10-30 2016-03-09 欧阳荣华 弯折角度可调的牙刷
TWM589002U (zh) * 2019-07-19 2020-01-11 龍昌兄弟股份有限公司 牙刷握把改良

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FR650803A (fr) * 1928-03-13 1929-02-11 Perfectionnements aux brosses à dents
US2609251A (en) * 1947-04-28 1952-09-02 Haupt Ferdinand Robert Adjustable handle for toothbrushes
US4731896A (en) * 1985-10-21 1988-03-22 Tour Odette De Adjustable toothbrush
GB2413268A (en) * 2004-04-21 2005-10-26 Igor Vasilev Toothbrush with pivotal force sensing mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499422A (en) * 1995-01-05 1996-03-19 Lavazoli; Rudi Rotating head tooth brush
CN2593630Y (zh) * 2002-12-03 2003-12-24 陈文雷 弹力旋转牙刷
CN203828321U (zh) * 2014-01-14 2014-09-17 段永新 一种牙刷
CN204048574U (zh) * 2014-07-02 2014-12-31 段永新 一种牙刷
CN205072337U (zh) * 2015-10-30 2016-03-09 欧阳荣华 弯折角度可调的牙刷
TWM589002U (zh) * 2019-07-19 2020-01-11 龍昌兄弟股份有限公司 牙刷握把改良

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US20230404727A1 (en) 2023-12-21
EP4248791A1 (en) 2023-09-27
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JP2023549281A (ja) 2023-11-22
EP4248791A4 (en) 2024-10-23

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