WO2014015683A1 - 刷类用品的头部结构 - Google Patents

刷类用品的头部结构 Download PDF

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Publication number
WO2014015683A1
WO2014015683A1 PCT/CN2013/073728 CN2013073728W WO2014015683A1 WO 2014015683 A1 WO2014015683 A1 WO 2014015683A1 CN 2013073728 W CN2013073728 W CN 2013073728W WO 2014015683 A1 WO2014015683 A1 WO 2014015683A1
Authority
WO
WIPO (PCT)
Prior art keywords
bristle holder
driven
active
axis
drive shaft
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2013/073728
Other languages
English (en)
French (fr)
Inventor
戴晓国
徐振武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Shift Electrics Co Ltd
Original Assignee
Shanghai Shift Electrics Co Ltd
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 Shanghai Shift Electrics Co Ltd filed Critical Shanghai Shift Electrics Co Ltd
Priority to ES13822963.8T priority Critical patent/ES2683829T3/es
Priority to EP13822963.8A priority patent/EP2875794B1/en
Priority to US14/417,123 priority patent/US9827080B2/en
Priority to JP2015523379A priority patent/JP2015526161A/ja
Publication of WO2014015683A1 publication Critical patent/WO2014015683A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/349Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor with multiple brush bodies
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B13/00Brushes with driven brush bodies or carriers
    • A46B13/02Brushes with driven brush bodies or carriers power-driven carriers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409Power-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
    • A61C17/3418Rotation around the axis of the toothbrush handle
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409Power-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
    • A61C17/3427Rotation around the axis perpendicular to the axis of toothbrush handle and in the plane defined by the bristle holder

Definitions

  • the present invention relates to a head structure for a brush article, and more particularly to a head structure for a brush article such as a toothbrush. Background technique
  • the head structure of the brush article is critical to its cleaning and other extended functions. Therefore, in recent years, many improvements have been made to the head structure of brush articles.
  • a brush for an electric toothbrush having a head and comprising a frame, a movable contact element holder and a movable contact element holder extension, the frame comprising the frame supported by the frame, is disclosed in US 2010/0036656 A1 a plurality of first contact elements;
  • the movable contact element holder includes a plurality of second contact elements supported within the movable contact element holder, the movable contact element holder being configured to receive a cleaning motion from the electric drive,
  • the movable contact element holder extension is disposed at the top end of the head, and a gap is provided between the extension and the frame; wherein the head side
  • the width of at least a first portion of the slit in the edge region is less than the width of the second portion of the slit in the inner region of the toothbrush head.
  • a head structure of a brush article comprising: a frame movably coupled to a head drive shaft; coupled to a head drive shaft, driven by a head drive shaft At least one active bristle holder for driving thereon, and a driven bristle holder interlaced with the active bristle holders for interposing bristles thereon, wherein
  • the driven bristle holder is driven by the active bristle holder to be moved about the respective axes of motion by the frame; at least one of the at least one active bristle holder is provided with at least one protrusion on its end face along the longitudinal axis Starting from the active brush in the driven bristle holder At least one of the driven points is closer to the active bristle holder than the bevel and the corresponding raised contact or contact line or contact surface so that the driven bristle holder is retained by the active bristles during movement Piece drive.
  • the head drive shaft moves in accordance with the movement of the motor-driven shank drive shaft of the brush article.
  • the active bristle holder may be provided with at least two projections acting in opposite directions in operation, a synergistic bevel, wherein the first projection is disposed on the active bristle holder in an upward direction parallel to the head drive shaft axis On the upper end surface of the direction, the second protrusion is disposed on a lower end surface of the active bristle holder opposite to the upper end surface, and the axes of the first protrusion and the second protrusion may be on the same side with respect to the axis of the head drive shaft .
  • first protrusion and the second protrusion are both disposed on an upper end surface of the active bristle holder in an upward direction parallel to the head drive shaft axis or both are disposed on the active bristle holder
  • first projection and the second projection are disposed on different sides of the upper or lower end surface with respect to the axis of the head drive shaft.
  • the active bristle holder may be provided with a plurality of protrusions in groups, the first group of protrusions being opposite to the protrusion direction of the second group of protrusions, the first group of protrusions being arranged to be held in the active bristles
  • the upper end surface of the piece is bilaterally symmetrical with respect to the axis of the head drive shaft
  • the second set of protrusions are arranged to be bilaterally symmetrical with respect to the axis of the head drive shaft on the lower end surface of the active bristle holder, relative to the head drive shaft
  • the protrusions of the axis opposite to the protruding direction of the side are included in the thickness direction of the respective active bristle holder, that is, the center line in the upward or downward direction parallel to the head drive shaft axis and perpendicular to the axis of the head drive shaft
  • the plane is symmetrical.
  • a head structure for a brush article comprising: a frame movably coupled to a head drive shaft; coupled to the head drive shaft and driven by the head drive shaft An active bristle holder for mounting the bristles thereon; and a driven bristle holder that is spaced apart from the active bristle holders for mounting bristles thereon, wherein the driven bristles
  • the retaining member is driven by the active bristle holder to be moved about the respective axes of motion by the frame; at least one of the at least one active bristle holder is provided with at least one bevel on its end face along the longitudinal axis,
  • the phase of the moving bristle holder driven by the active bristle holder a projection corresponding to the inclined surface is provided on the end surface; at least one driving point on the at least one inclined surface is closer to the driven than the contact line or contact surface or contact point of the inclined surface and the corresponding convex surface
  • the bristle holder is such that the driven bristle holder
  • the active bristle holders are rotatable about the y-angle about the head drive shaft axis, and correspondingly the driven bristle holders are rotated by an angle ⁇ about their respective axes of motion.
  • the gamma angle is 30° to 70°, and the ⁇ angle is 8°.
  • the gamma angle is 60° and the ⁇ angle is 4. .
  • the head structure of the present invention is compact, not only has an excellent cleaning effect but also has other auxiliary functions such as massage. DRAWINGS
  • Figure 1 is a front view of the electric toothbrush
  • Figure 2 is a front elevational view of the brush portion showing the head including a plurality of active bristle holders and a plurality of driven bristle holders;
  • Figure 3 is a cross-sectional view as seen from the ⁇ - ⁇ direction of Figure 1, showing the head drive shaft and the bristle holder, and showing the upward direction of the head drive shaft axis facing the view.
  • the lower direction w 2 - they also represent the thickness direction of the bristle holder and the rightward direction w 3 and the leftward direction w 4 perpendicular to the head drive shaft axis - they also represent the width direction of the bristle holder;
  • Figure 4 is a view schematically showing the relative movement of the active bristle holder and the driven bristle holder
  • Figure 5 is a bottom view showing the relative movement of the active bristle holder and the driven bristle holder shown in Figure 4;
  • Figure 6 is a front elevational view showing the removal of the driven bristle holder shown in Figure 2;
  • Figure 7 is a left side view corresponding to Figure 6;
  • Figure 8 is a perspective view schematically showing the assembly relationship of the active bristle holder and the head drive shaft;
  • Figure 9 is a rear view corresponding to Figure 8;
  • Figure 10 is a front elevational view showing the removal of the active bristle holder shown in Figure 2, and showing a direction W 5 perpendicular to the axis of the head drive shaft facing the view, that is, the length direction of the bristle holder;
  • Figure 11 represents a left side view corresponding to Figure 10;
  • Figure 12 represents a rear view corresponding to Figure 10;
  • Figure 13 is a perspective view schematically showing the assembled relationship of the driven bristle holder and the head drive shaft;
  • Figure 14 is a rear view corresponding to Figure 13;
  • Figure 15 is a front elevational view showing the assembly of the moving shaft of the handle and the driven bristle holder;
  • Figure 16 is a cross-sectional view as seen from the direction of B-B in Figure 15;
  • Figure 17 is a cross-sectional view as seen from the direction of C-C in Figure 15.
  • Lo represents the axis of the handle drive shaft
  • L 4 , L 3 , L 2 represent the axes of motion of the first, second and third driven bristle holders, respectively;
  • represents the axis of the rotation of the beta angle;
  • L 6 represents the axis of the rotation of the angle ⁇
  • Ro represents the direction of movement of the handle drive shaft
  • Ri represents the direction of movement of the head drive shaft
  • R 3 , R 2 respectively represent the moving direction of the first, second and third driven bristle holders; 1 represents an electric toothbrush;
  • 23-1, 23-2, 23-3, and 23-4 represent the first, second, third, and fourth active bristle holders, respectively;
  • 21-1, 21-2, and 21-3 represent the first, second, and third driven bristle holders, respectively; 25 represents a bristles fixed to the active bristle holder;
  • 233, 234, 235, 236 represent protrusions respectively disposed on the upper and lower end faces of the active bristle holder
  • 213, 214, 215, 216 represent inclined faces respectively disposed on the upper and lower end faces of the driven bristle holder and corresponding to the movement trajectories of the projections 233, 234, 235, 236 on the respective active bristle holders;
  • 210 represents a face of the driven bristle holder and the head drive shaft
  • 211 represents the buckle portions on both sides of the driven bristle holder
  • 217 represents a circular arc surface on both sides of the buckle portion of the driven bristle holder
  • 239 represents a circular arc surface of the active bristle holder on the edge of the lower half in the W1 direction
  • 321 represents a facet at the bottom end of the inner cavity of the frame in the W2 direction and the circular arc surface contact of the active bristle holder on the lower half edge
  • 322 represents a facet that is in contact with the arcuate surface of the active bristle holder on the edge of the lower half in the W1 direction at the bottom end of the frame inner cavity;
  • 325 represents a groove on the frame for accommodating the side snap portions of the driven bristle holder; 326 represents a plane of the groove in the W4 direction, the plane and the snap portion on the driven bristle holder Corresponding plane
  • 327 represents an inner curved surface in the groove
  • 329 represents the moving shaft of the driven bristle holder.
  • the electric toothbrush 1 includes a detachable brush portion 30 and a handle 10.
  • the detachable brush portion 30 includes: a head, a head drive shaft 12, a coupling member 16, and an interface member 15.
  • the head includes: a frame 32 movably coupled to the head drive shaft 12; active bristle holders 23-1, 23-2, 23-3, 23-4; driven bristle holders 21-1, 21-2 21-3; bristles 25 respectively mounted on the active bristle holders 23-1, 23-2, 23-3, 23-4 and respectively mounted on the driven bristle holders 21-1, 21-2, 21-
  • the bristles 27 on the 3; and the driven bristle holder moving shaft 329 see Figs. 5 and 11).
  • the active bristle holders 23-1, 23-2, 23-3, 23-4 and the driven bristle holders 21-1, 21-2, 21-3 are disposed to be alternately spaced apart from each other.
  • the driven bristle holders 21-1, 21-2, 21-3 can receive movement from the kinetic energy of the respective active bristle holders 23-1, 23-2, 23-3, 23-4.
  • the number of driven bristle holder moving shafts 329 is equal to the number of driven bristle holders 21-1, 21-2, 21-3.
  • the active bristle holders 23-1, 23-2, 23-3, 23-4 and the driven bristle holders 21-1, 21-2, 21-3 have shapes corresponding to each other, and they may be of any shape. For ease of use, the thickness is much smaller than the width and the width is smaller than the length.
  • the coupling member 16 is used to couple the head drive shaft 12 and the shank drive shaft 14.
  • the head drive shaft 12 is swung with the rotation or swing of the shank drive shaft 14.
  • the interface member 15 is for
  • the number of active bristle holders is four, that is, 23-1, 23-2, 23-3, 23-4, and the number of driven bristle holders is three, that is, 21 -1, 21-2, 21-3, but the number of active bristle holders and driven bristle holders can be arbitrarily set as needed, their number
  • the quantities may vary (as in this embodiment) or they may be equal.
  • the handle drive shaft 14 When the user presses the switch 11 (Fig. 1) on the handle 10 of the electric toothbrush 1, a motor (not shown) in the handle 10 of the electric toothbrush 1 is activated, and the handle drive shaft 14 is driven by a conventional transmission mechanism. Its axis L. Movement (for example, in the present embodiment the handle drive shaft 14 is swung about its axis Lo, of course the handle drive shaft 14 is also rotatable about its axis Lo), and the handle drive shaft 14 transmits kinetic energy to the head through the coupling 16.
  • the drive shaft 12 moves the head drive shaft 12 about its axis. As an example, in the present embodiment the head drive shaft 12 is swung about its axis.
  • the head drive shaft 12 passes through all of the driven bristle holders 21-1, 21-2, 21-3 provided on the head with clearance and all active bristle holders 23-1, 23-2, 23- 3, 23-4 are coupled without relative movement, and in addition, the head drive shaft 12 and the coupling member 16 are also coupled without relative movement.
  • the active bristle holders 23-1, 23-2, 23-3, 23-4 oscillate as the head drive shaft 12 swings about the axis, the active bristle holders 23-1, 23-2, 23-3, 23- 4
  • the driven bristles can be driven by a transmission mechanism provided between the active bristle holders 23-1, 23-2, 23-3, 23-4 and the driven bristle holders 21-1, 21-2, 21-3
  • the holders 21-1, 21-2, 21-3 are swung around their respective axes of motion L 4 , L 3 , L 2 .
  • the driven bristle holders 21-1, 21-2, 21-3 are respectively swung about respective axes of motion L 4 , L 3 , L 2 perpendicular to the axis of the head drive shaft 12, thereby
  • the bristles 25 fixed to the active bristle holders 23-1, 23-2, 23-3, 23-4 are pivoted approximately about the axis of the head drive shaft 12 to be fixed to the driven bristle holder 21-1.
  • the bristles 27 on the 21-2, 21-3 swing approximately about their respective axes of motion L 4 , L 3 , L 2 .
  • the present invention is not limited to the transmission mechanism for the handle 10, and the transmission mechanism can be any known mechanism that can transmit the kinetic energy of the motor to the handle drive shaft 14 for movement (rotation or swing).
  • the present invention is not limited to the transmission mechanism for the head drive shaft 12, which may be any known that can transmit the motion of the handle drive shaft 14 to the head drive shaft 12 for movement (rotation or swing).
  • Transmission mechanism In the present embodiment, the transmission mechanism is a known transmission mechanism that can swing the shank drive shaft 14 and the head drive shaft 12, respectively.
  • the head drive shaft 12 can be disposed parallel to the head drive shaft and eccentric with respect to the fixed shaft axis, and can be oscillated about the fixed shaft axis.
  • the active bristle holder is provided with a hole for engaging the fixed shaft, the hole being sized to be slightly larger than the size of the fixed shaft, and therefore, the active bristle holder and the fixed shaft are coupled to be movable relative to each other.
  • the active bristle holder is driven by the head drive shaft 12 to swing about a fixed axis axis.
  • the active bristle holder is provided with a hole that cooperates with the head drive shaft 12, and the hole may be slightly larger than the size of the drive shaft 12, so that the active bristle holder is
  • the head drive shaft 12 is coupled to be relatively movable.
  • the active bristle holders 23-1, 23-2, 23-3, 23-4 can be along the drive shaft axis L of the shank 14.
  • the W1 direction is sequentially arranged from top to bottom, for example, the fourth active bristle holder 23-4 is located at the uppermost portion, and then successively the third and second active bristle holders 23-3, 23-2, the first driven bristle remains The piece 23-1 is located at the lowermost portion.
  • the bristles 25 can be fixed to the four active bristle holders 23-1, 23-2, 23-3, 23-4, respectively, by any process of industrial brushing.
  • Each of the active bristle holders 23-1, 23-2, 23-3, 23-4 is provided with a hole matching the cross-sectional shape of the head drive shaft 12 around the axis of the head drive shaft 12, the size of the hole and The cross-sectional dimensions of the head drive shaft 12 are tightly fitted such that when the head drive shaft 12 is loaded into the bore, each of the active bristle holders 23-1, 23-2, 23-3, 23-4 and the head The drive shafts 12 are coupled together without relative movement.
  • the head drive shaft 12 has a cylindrical cross section, and the holes in each of the active bristle holders 23-1, 23-2, 23-3, 23-4 are circular holes.
  • the head drive shaft 12 and the active bristle holders 23-1, 23-2, 23-3, 23-4 can also be injection molded to achieve the relative motionless coupling.
  • the driven bristle holders 21-1, 21-2, 21-3 may be along the drive shaft axis L of the shank 14.
  • the W1 direction is sequentially arranged from top to bottom, for example, the third driven bristle holder 21-3 is located at the uppermost portion, and the second driven bristle holder 21-2 is in the middle, and the first driven bristle holder 21-1 is located at the most Lower part.
  • the bristles 27 can be fixed to the three driven bristle holders 21-1, 21-2, 21-3, respectively, by any process of industrial brushing.
  • Each of the driven bristle holders 21-1, 21-2, 21-3 is respectively provided with a hole 210 matching the cross-sectional shape of the head drive shaft 12 around the axis of the head drive shaft 12, the size of the hole 210 being larger than the head.
  • the cross-sectional dimensions of the drive shaft 12 are such that the head drive shaft 12 and the driven bristle holders 21-1, 21-2, 21-3 do not interfere during movement.
  • the active bristle holders 23-1, 23-2, 23-3, 23-4 and the driven bristle holders 21-1, 21-2, 21-3 are arranged to be alternately spaced apart from each other.
  • each of the active bristle holders 23-1, 23-2, 23-3, 23-4 to transfer kinetic energy to their respective driven bristle holders 21-1, 21-2, 21-3, as an example,
  • four protrusions are provided on the other active bristle holders 23-1, 23-2, 23-3, such as the first A projection 233, a second projection 234, a third projection 235, and a fourth projection 236 are provided on the upper end surface of the active bristle holder.
  • first protrusion 233 and the second protrusion 234 are respectively disposed on the active bristle holders 23-1, 23-2, On the upper end of 23-3. More specifically, the first protrusion 233 and the second protrusion 234 are disposed to be bilaterally symmetrical with respect to the axis of the head drive shaft 12 on the upper end surface, that is, the first protrusion 233 and the second protrusion 234 It is 180 on the upper end face. Configuration.
  • the third protrusion 235 and the fourth protrusion 236 are respectively disposed on the lower end faces of the active bristle holders 23-1, 23-2, 23-3, more specifically, the third protrusions 235 and the The four projections 236 are disposed to be bilaterally symmetrical with respect to the axis of the head drive shaft 12 on the lower end surface, that is, the third projection 235 and the fourth projection 236 are 180 on the lower end surface. Configuration.
  • the first protrusion 233 on the upper end surface of the active bristle holder and the third protrusion 235 on the lower end surface are disposed on the left side of the axis L1, which are in the thickness direction including the active bristle holder (ie, Wi-W 2 direction)
  • the center line is symmetrical about a plane perpendicular to the axis.
  • the second protrusion 234 on the upper end surface of the active bristle holder and the fourth protrusion 236 on the lower end surface are disposed on the right side of the axis, which are centered in the thickness direction including the active bristle holder and perpendicular to the axis Plane symmetry.
  • the projections 233, 234, 235, 236 can be assembled as separate pieces to the respective end faces, or can be integrated by injection molding and corresponding end faces. Further, the number of projections provided for the active bristle holder is not limited and may be more or less than four. Moreover, the number of projections provided on each of the active bristle holders may be the same or different. For example, in the present embodiment, the active bristle holders 23-1, 23-2, 23-3 are respectively provided with four projections 233, 234, 235, 236, and the active bristle holder 23-4 is provided only with two Rags 235, 236. Further, the projections may be of any shape, for example, may be a small plane or a curved surface. Preferably, the projections have a partially cylindrical shape.
  • FIGS. 8-9 show the relative positions of the projections 233, 234, 235, 236 in detail.
  • the active bristle holder is oriented in the W4 direction with the axis of the head drive shaft 12 as The left half of the boundary is provided with a circular arc surface, the circular arc surface facing the ⁇ direction is indicated by 238, and the circular arc surface facing the W2 direction is indicated by 239, and the arc is more clearly shown in FIGS. 8 and 9. Faces 238, 239.
  • the kinetic energy of 23-2, 23-3, and 23-4 in the present embodiment, the end faces (i.e., the upper end faces) and the W2 direction in the directions of the respective driven bristle holders 21-1, 21-2, and 21-3.
  • the end faces ie, the lower end faces
  • the end faces are respectively provided with spaced apart inclined faces, for example, a first inclined surface 213, a second inclined surface 214, a third inclined surface 215, and a fourth inclined surface 216, respectively, which are respectively corresponding to the active bristle holders.
  • the motion trajectories of the protrusions 233, 234, 235, 236 correspond.
  • the first inclined surface 213 and the second inclined surface 214 are respectively disposed on each of the driven bristles.
  • the first inclined surface 213 is disposed on the lower half of the left end portion bounded by the axis of the head drive shaft 12
  • the second inclined surface 214 is disposed on the lower half of the right half of the head drive shaft 12 bounded by the axis.
  • the third inclined surface 215 and the fourth inclined surface 216 are respectively disposed on the upper end faces of the driven bristle holders 21-1, 21-2, 21-3, and more specifically, the third inclined surface 215 is disposed on the upper end surface to the head
  • the axis of the drive shaft 12 is bounded by the left half of the axis
  • the fourth ramp 214 is disposed on the upper half of the upper end face bounded by the axis of the head drive shaft 12.
  • the arrangement of the first slope 213 will now be described taking only the driven bristle holder 21-1 as an example. It goes without saying that the bevel setting of the other driven bristle holders is similar.
  • the plane including the apex of the head structure and perpendicular to the axis of the head drive shaft 12 is used as a reference surface, and the lower edge of the first slope 213 is defined as its lower starting line 213A, and the first slope 213 is defined.
  • the upper edge is its upper end line 213B.
  • the shortest distance of the upper end line 213B of the first slope 213 from the reference plane is greater than the shortest distance of the start line 213A of the first slope 213 from the reference plane, and the distance difference between the two is AS 213 . That is, the line 213B in the W2 direction is at the AS 213 of the line 213A.
  • the bevel extending portion 213-1 is a portion in which the first inclined surface 213 extends upward, and one end edge of the inclined surface extending portion 213-1 is bounded by a line 213B, and the other end edge is rotated by the axis of the head driving shaft 12.
  • the inclined surface extending portion 213-1 is a surface which is swept around the axis of the head driving shaft 12 by the upper end line 213B on the first inclined surface 213, and therefore, the inclined surface extending portion 213-1 is The line swept by the upper end line 213B on one slope 213 and the upper end line 213B on the first slope 213 have the same shortest distance from the reference plane.
  • the slope extending portion 213-2 is a portion in which the first slope 213 extends downward.
  • One end edge of the bevel extending portion 213-2 is bounded by the starting line 213A on the first inclined surface 213, and the other end edge is projected onto the end face on the end face in the W2 direction by the axis L 5 of the angle ⁇ of the head driving shaft 12. For the boundary.
  • the inclined surface extending portion 213-2 is a surface which is swept around the axis of the head driving shaft 12 by the starting line 213A on the first inclined surface 213, and thus the inclined surface extending portion 213-2 is first
  • the line swept by the starting line 213A on the slope 213 and the starting line 213A on the first slope 213 have the same shortest distance from the reference plane.
  • a second inclined surface 214 and inclined surface extending portions 214-1, 214-2 are further provided on the lower end surface.
  • the axis of the head drive shaft 12 and the first driven bristle holder 21-1 The movement axis L 4 is perpendicular, and the second slope 214 and the first slope 213 are symmetrical with respect to a plane formed by the axis of the head drive shaft 12 and the movement axis L 4 of the first driven bristle holder 21-1; the bevel extension portion 214- 1 and the bevel extending portion 213-1 are symmetrical with respect to a plane formed by the axis of the head drive shaft 12 and the movement axis L 4 of the first driven bristle holder 21-1; the bevel extending portion 214-2 and the bevel extending portion 213- 2 is symmetrical with respect to a plane formed by the axis of the head drive shaft 12 and the movement axis L 4 of the first driven bristle holder 21-1.
  • a third inclined surface 215, a sloped extending portion 215-1, a sloped extending portion 215-2, a fourth inclined surface 216, a sloped extending portion 216-1, and a sloped extending portion 216-2 are also provided on the upper end surface.
  • the third slope 215 and the first slope 213 are respectively disposed on the upper and lower end faces
  • the fourth slope 216 and the second slope 214 are respectively disposed on the upper and lower end faces.
  • the third slope 215 is disposed on the upper end surface of the driven bristle holder, and more specifically, the third slope 215 is disposed on the upper end at the left half bounded by the axis of the head drive shaft 12, in FIG. It is shown on the upper end face of the right half of the boundary bounded by the axis L 5 of the angle ⁇ of the head drive shaft 12.
  • the arrangement of the third slope 215 will be described by taking the driven bristle holder 21-1 as an example. It goes without saying that the bevel setting of the other driven bristle holders is similar.
  • a plane including a vertex of the head structure perpendicular to the axis of the head drive shaft 12 is used as a reference plane, and a lower edge of the third slope 215 is defined as a lower start line 215A thereof, and a third slope 215 is defined.
  • the upper edge is its upper end line 215B.
  • the shortest distance from the reference surface to the upper end line 215B on the third slope 215 is greater than the shortest distance from the upper start line 215A of the third slope 215 to the reference surface, and the distance difference between the two is AS 215 . That is, the line 215B in the W2 direction is at the AS 215 of the line 215A.
  • the slope 215-1 is a portion in which the third slope 215 extends upward, one end edge of the slope extension portion 215-1 is bounded by a line 215B, and the other end edge is rotated by an angle ⁇ at the axis of the head drive shaft 12.
  • the axis L 5 is projected to the line on the upper end face in the ⁇ direction.
  • the bevel extending portion 215-1 is a surface which is swept around the axis of the head drive shaft 12 by the upper end line 215B on the third inclined surface 215, and therefore, the bevel extending portion 215-1 is The line swept by the upper end line 215B on the triple bevel 215 and the upper end line 215B on the third bevel 215 have the same shortest distance from the reference plane.
  • the slope 215-2 is a portion in which the third slope 215 extends downward.
  • One end of the inclined surface extending portion 215-2 is bounded by the starting line 215A on the third inclined surface 215, and the other end is projected onto the upper end surface of the direction along the axis L 5 of the angle ⁇ of the head driving shaft 12 boundary.
  • the beveled extension portion 215-2 is the starting line 215A on the third inclined surface 215. The wire is swept around the axis of the head drive shaft 12, so the line on the beveled extension 215-2 that is swept by the starting line 215A on the third bevel 215 and the start on the third bevel 215 Line 215 A has the same shortest distance from the reference plane.
  • the bottom ends of the driven bristle holders 21-1, 21-2, and 21-3 are provided with a driven bristle holder moving hole 219, and the corresponding follower provided on the frame 32.
  • the bristle holder motion shaft 329 is mated, and the engagement of the aperture 219 and the driven bristle holder motion axis 329 constrains the driven bristle holders to only surround the axes L 2 , L 3 , L of the driven bristle holder motion axis 329, respectively. 4 swings.
  • each of the driven bristle holders 21-1, 21-2, and 21-3 is also symmetrically provided with a buckle portion 211, and each of the outer sides of the "" button portion 211 is a circular arc surface 217.
  • the arc center of the circular arc surface 217 of the buckle portion falls on the movement axes L 2 , L 3 , L 4 of the respective driven bristle holders 21-1, 21-2, 21-3.
  • the latching portion 211 forms an upper plane 218 in the W3 direction, and the upper plane 218 cooperates with the groove surface 326 (FIG.
  • the frame 32 is provided with a frame recess 325 (shown in Fig. 15) for receiving the latching portion 211 on the corresponding driven bristle holder.
  • the groove 325 on the frame 32 has a groove inner curved surface 327 corresponding to the circular arc surface 217 of the buckle portion.
  • the inner curved surface 327 of the groove is a circular arc surface, and preferably the corresponding circular groove surface 217 has a groove corresponding thereto.
  • the inner circular arc surface 327 When the inner circular arc surface 327 is engaged, the inner circular arc surface 327 and the circular arc surface 217 of the buckle have a common center line.
  • the inner arc surface 327 and the arcuate surface 217 of the recess always maintain a suitable peripheral gap, for example, the peripheral gap may range from 0.02 mm to 0.08 mm.
  • the driven bristle holder moving aperture 219 and the driven bristle holder motion axis 329 can also be omitted.
  • the peripheral gap between the circular arc surface 327 in the groove and the circular arc surface 217 of the buckle portion is 0.02 mm - 0.05 mm.
  • the frame 32 is provided with a number of frame driven bristle holder moving center blind holes 328 corresponding to the number of driven bristle holders, the centers of which are respectively located at the respective axes of motion L 2 , L 3 , L 4 on.
  • the corresponding driven bristle holder moving shaft 329, the frame driven bristle holder moving center hole 328 and the driven bristle holder moving shaft 329 are tightly fitted to ensure The driven bristle holder moving shaft 329 and the frame driven bristle holder moving center hole 328 are coupled without relative movement.
  • they can also be integrated by an injection molding process.
  • the frame 32 further includes an active bristle holder motion constraint plane corresponding to the active bristle holders.
  • the planes in the direction of the active bristle holder motion constraint plane are indicated, for example, by 322, active bristle holder motion constraints.
  • the plane in the plane of W 2 in the plane is represented, for example, by 321 , and each pair of restraining planes 322 and 321 facing each other accommodates an active bristle holder.
  • the constraining plane 321 and the active bristle holder in the direction correspond to the arcuate surface 239 on the lower half edge, and the peripheral gap between the constraining plane 321 and the arcuate surface 239 may be, for example, in the range of 0.03 mm to 0.05 mm.
  • Active constraint plane 322 and W 2 in the direction of the bristle holder in the lower half of the arcuate edge surface 238 corresponds to the peripheral gap between the plane 322 and 238 preferably bound arcuate surface is 0.03mm- 0.05mm. Constraints can constrain the plane 321 and 322 active member bristle holder excessive movement direction and W 2 directions.
  • the frame 32 is provided with a head drive shaft hole 3211, the head drive shaft hole 3211 and the head drive shaft 12 are coaxial, and the head drive shaft hole 3211 is slightly larger than the head drive shaft 12.
  • the head drive shaft 12 can be any shape, preferably cylindrical, in which case the head drive shaft bore 3211 is circular.
  • the diameter of the head drive shaft hole 3211 is larger than the diameter of the head drive shaft 12, for example, 0.04 mm to 0.09 mm.
  • the second projection 234 on 1 coincides with the upper end line 214B of the second slope 214 of the driven bristle holder 21-1
  • the lower starting line 215A of the third slope 215 of -1 coincides
  • the fourth protrusion 236 on the active bristle holder 23-2 coincides with the upper end line 216B of the fourth slope 216 of the driven bristle holder 21-1.
  • the active bristle holders 23-1, 23-2, 23-3, 23-4 are driven in the clockwise direction about their axes by the head drive shaft 12 (for example, by rotating 60)
  • the active bristle holder 23-1 The upper first protrusion 233 moves in the direction from the lower start line 213A of the first slope 213 to the upper end line 213B of the first slope 213 along the driven bristle holder 21-1, due to the upper end line 213B and the lower start
  • the active bristle holder 23 can be made.
  • -1 rotates the gamma angle clockwise about the axis, and the gamma angle may be 30 to 70, preferably 60.
  • the driven bristle holder 21-1 is rotated clockwise by an angle ⁇ about the axis L 4 , and the ⁇ angle may be about 1. To 8. , preferably 4°.
  • the size of the ⁇ angle depends on the size of 8 213. The larger the AS 213, the larger the ⁇ angle.
  • the upper end line 214B and the lower starting line 214A have a difference AS 214 , that is, the upper end line 214B is closer to the active bristle holder 23-1, and the second bevel 214 of the driven bristle holder 21-1 and
  • the first slope 213 is symmetrical about the axis L 4 and the plane formed, so that when the first protrusion 233 of the active bristle holder 23-1 moves clockwise, the driven bristle holder 21-1 is rotated about the L 4 axis by ⁇ At this time, the second slope 214 of the driven bristle holder 21-1 also allows the driven bristle holder 21-1 to rotate the ⁇ angle about the movement axis L 4 .
  • the second projection 234 does not interfere with the driven bristle holder 21-1. That is, the second slope 214 of the driven bristle holder 21-1 does not hinder the movement of the driven bristle holder 21-1.
  • the first projection 233 of the active bristle holder 23-1 terminates in the upper end line 213B line
  • the second projection 234 of the active bristle holder 23-1 terminates at the lower starting line 214A.
  • the relationship between the third projection 235 of the active bristle holder 23-2 and the third slope 215 of the driven bristle holder 21-1 can be analyzed, and the third projection 235 of the active bristle holder 23-2 and the driven bristles remain.
  • the movement relationship of the third slope 215 of the piece 21-1 is the same as the movement relationship of the second protrusion 234 of the active bristle holder 23-1 and the second slope 214 of the driven bristle holder 21-1, and the roles of the two are also the same.
  • the axis moves counterclockwise, either or both of the second projection 234 on the active bristle holder 23-1 and the third projection 235 on the active bristle holder 23-2 simultaneously drive the driven bristle holder 21- 1 counterclockwise about the axis L 4, a first member 23-1 and the driven protrusion 233 of the first bristle holder synergy 21-1 ramp member 213 by the active and active bristles bristle holding member 23-2
  • the synergistic action of the fourth projection 236 and the fourth bevel 216 of the driven bristle holder 21-1 can effectively avoid interference with the movement of the driven bristle holder 21-1.
  • the second protrusion 234 and the third protrusion 235 of the active bristle holder drive the driven bristle holder to move counterclockwise about the axis L 4 (or L 2 or L 3 ).
  • the first projection 233 of the active bristle holder and the first bevel 213 of the driven bristle holder and the cooperation of the fourth projection 236 of the active bristle holder and the fourth bevel 216 of the driven bristle holder The action can effectively avoid counteracting the counterclockwise movement of the driven bristle holder.
  • the third protrusion 235 and the second protrusion 234 of the active bristle holder have the same function
  • the fourth protrusion 236 and the first protrusion 233 have the same function
  • the third protrusion 235 or the second of the active bristle holder The projections 234 and the first projections 233 or the fourth projections 236 of the active bristle holder are opposite in operation.
  • the present invention symmetrically sets a plurality of sets of protrusions having opposite protrusion directions and corresponding plurality of protrusions
  • the axis of motion of the driven bristle holder (e.g., L 2 , L 3 , L 4 ) is perpendicular to the head drive shaft axis as shown in FIG.
  • the axis of movement of the driven bristle holder may be arranged to be parallel or overlapping with the head drive shaft, or at any angle.

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Description

刷类用品的头部结构 技术领域
本发明涉及一种刷类用品的头部结构, 更具体地说, 涉及用于如牙刷之 类的刷类用品的头部结构。 背景技术
刷类用品的头部结构对于其清洁效果及其他扩展功能而言是至关重要 的。 因此, 近年来对刷类用品的头部结构进行艮多改进。
US 2010/0036656 A1中披露了一种电动牙刷的刷件, 该刷件具有头部并 包括框架、 可动接触元件保持件和可动接触元件保持件扩展部, 框架包括被 支承于框架内的多个第一接触元件; 可动接触元件保持件包括被支承于可动 接触元件保持件内的多个第二接触元件, 该可动接触元件保持件被构造成接 收来自电驱动器的清洁运动, 以便具有相对于多个第一接触元件的至少一种 自由运动; 可动接触元件保持件扩展部被设置在头部的顶端, 且在扩展部和 框架之间设有缝隙; 其中处于头部侧向边缘区域中的缝隙的至少第一部分的 宽度小于处于牙刷头的内部区域中的缝隙的第二部分的宽度。 发明内容
本发明的目的是提供一种刷类用品的头部结构, 更具体地说, 提供用于 如牙刷之类的刷类用品的头部结构, 该头部结构不仅具有极好的清洁效果还 具有如按摩之类的其他辅助功能。
为了实现上述目的, 根据本发明的一方面, 提供一种刷类用品的头部结 构, 其包括: 与头部驱动轴可运动地联接的框架; 与头部驱动轴联接、 由头 部驱动轴驱动的至少一个主动刷毛保持件, 用于在其上安装刷毛; 以及从动 刷毛保持件, 其与所述主动刷毛保持件彼此交错地间隔设置, 用于在其上安 装刷毛, 其中, 所述从动刷毛保持件被框架约束地由所述主动刷毛保持件驱 动而绕各自的运动轴线运动; 所述至少一个主动刷毛保持件中的至少一个在 其沿纵向轴线的端面上设有至少一个凸起,在从动刷毛保持件的被该主动刷 上的至少一个被驱动点比该斜面和相应的所述凸起的接触点或接触线或接 触面更靠近所述主动刷毛保持件, 以便在运动过程中, 从动刷毛保持件被主 动刷毛保持件驱动。
优选地, 所述头部驱动轴随所述刷类用品的由电机驱动的柄部驱动轴的 运动而运动。
此外, 主动刷毛保持件上可以设有至少两个在运转中作用相反的凸起, 协同作用的斜面, 其中第一凸起被设置在主动刷毛保持件的沿平行于头部驱 动轴轴线的向上方向的上端面上, 第二凸起被设置在主动刷毛保持件的与所 述上端面相反的下端面上, 第一凸起和第二凸起相对于头部驱动轴的轴线可 以处于同侧。
凸起协同作用的斜面,其中第一凸起和第二凸起均被设置在主动刷毛保持件 的沿平行于头部驱动轴轴线的向上方向的上端面上或均被设置在主动刷毛 保持件的与所述上端面相反的下端面上, 第一凸起和第二凸起被设置成在所 述上端面或下端面上相对于头部驱动轴的轴线处于不同侧。
可供选择的是, 主动刷毛保持件上可以成组地设有多个凸起, 第一组凸 起与第二组凸起的突出方向相反, 第一组凸起被设置成在主动刷毛保持件的 上端面上相对于头部驱动轴的轴线左右对称, 第二组凸起被设置成在主动刷 毛保持件的下端面上相对于头部驱动轴的轴线左右对称,相对于头部驱动轴 的轴线同侧的突出方向相反的凸起以包含相应主动刷毛保持件的厚度方向、 即平行于所述头部驱动轴轴线的向上或向下方向的中心线并与头部驱动轴 的轴线垂直的平面对称。
根据本发明的另一方面, 提供一种刷类用品的头部结构, 包括: 与头部 驱动轴可运动地联接的^ I架; 与头部驱动轴联接、 由头部驱动轴驱动的至少 一个主动刷毛保持件, 用于在其上安装刷毛; 以及从动刷毛保持件, 其与所 述主动刷毛保持件彼此交错地间隔设置, 用于在其上安装刷毛, 其中, 所述 从动刷毛保持件被框架约束地由所述主动刷毛保持件驱动而绕各自的运动 轴线运动; 所述至少一个主动刷毛保持件中的至少一个在其沿纵向轴线的端 面上设有至少一个斜面,在从动刷毛保持件的被该主动刷毛保持件驱动的相 应端面上设有与所述斜面协同作用的凸起; 至少一个斜面上的至少一个驱动 点比所述的该斜面和其相应凸起的接触线或接触面或接触点更靠近所述从 动刷毛保持件,以便在运动过程中,从动刷毛保持件被主动刷毛保持件驱动。
在这种情况下, 其他附加技术特征与上面提到的主动刷毛保持件的端面 的技术方案相似, 不同之处仅在于, 主动刷毛保持件的端面上设有斜面, 从 件的运动轴线与头部驱动轴的轴线垂直, 主动刷毛保持件可以绕头部驱动轴 轴线摆动, 从动刷毛保持件可以绕其各自的运动轴线摆动。
主动刷毛保持件可以绕头部驱动轴轴线转动 γ角,相应地所述从动刷毛 保持件绕其各自的运动轴线转动 σ角。 所述 γ角为 30° 至 70° , 所述 σ角 为 至 8° 。 优选所述 γ角为 60° , 所述 σ角为 4。 。
本发明的头部结构筒单紧凑, 不仅具有极好的清洁效果还具有如按摩之 类的其他辅助功能。 附图说明
图 1为电动牙刷的正面图;
图 2为刷部的正面图,其示出了包括多个主动刷毛保持件和多个从动刷 毛保持件的头部;
图 3为从图 1中 Α-Α方向观察的剖面图,其示出了头部驱动轴和所述刷 毛保持件, 并示出了面向该视图的平行于头部驱动轴轴线的向上方向 向下方向 w2—它们亦代表刷毛保持件的厚度方向及垂直于头部驱动轴轴线 的向右方向 w3、 向左方向 w4—它们亦代表刷毛保持件的宽度方向;
图 4示意地示出了主动刷毛保持件和从动刷毛保持件相对运动的情况; 图 5的仰视图示出了图 4所示的主动刷毛保持件和从动刷毛保持件相对 运动的情况;
图 6的正面图示出了去除了图 2所示的从动刷毛保持件的情况; 图 7为与图 6相应的左视图;
图 8的透视图示意地示出了主动刷毛保持件和头部驱动轴的装配关系; 图 9为与图 8相应的后视图;
图 10的正面图示出了去除了图 2所示的主动刷毛保持件的情况, 并示 出了面向该视图垂直于头部驱动轴轴线的方向 W5, 即刷毛保持件的长度方 向;
图 11代表与图 10相应的左视图;
图 12代表与图 10相应的后视图;
图 13的透视图示意地示出了从动刷毛保持件和头部驱动轴的装配关系; 图 14代表与图 13相应的后视图;
图 15的正面图示出了刷柄和从动刷毛保持件运动轴的装配情况; 图 16代表从图 15中 B-B方向观察的剖面图;
图 17代表从图 15中 C-C方向观察的剖面图。 主要附图标记说明
Lo代表柄部驱动轴的轴线;
代表头部驱动轴的轴线;
L4、 L3、 L2分别代表第一、 第二、 第三从动刷毛保持件的运动轴线; !^代表 转动 β角的轴线;
L6代表 转动 α角的轴线;
Ro代表柄部驱动轴的运动方向;
Ri代表头部驱动轴的运动方向;
、 R3、 R2分别代表第一、 第二、 第三从动刷毛保持件的运动方向; 1代表电动牙刷;
10代表柄部;
11代表开关;
12代表头部驱动轴;
14代表与驱动电机相连的柄部驱动轴;
15代表接口件;
16代表联接件;
30代表刷部;
32代表框架;
23-1、 23-2、 23-3、 23-4分别代表第一、 第二、 第三、 第四主动刷毛保 持件;
21-1、 21-2、 21-3分别代表第一、 第二、 第三从动刷毛保持件; 25代表固定在主动刷毛保持件上的刷毛;
27代表固定在从动刷毛保持件上的刷毛;
233、 234、 235、 236代表分别设置在主动刷毛保持件的上、 下端面上的 凸起;
213、 214、 215、 216代表分别设置在从动刷毛保持件的上、 下端面上并 与相应主动刷毛保持件上的凸起 233、 234、 235、 236的运动轨迹相对应的 斜面;
210代表从动刷毛保持件和头部驱动轴配合的面;
211代表从动刷毛保持件的两侧卡扣部;
219代表从动刷毛保持件运动孔;
217代表从动刷毛保持件上卡扣部的两侧圓弧面;
218代表从动刷毛保持件上卡扣部上平面;
238代表主动刷毛保持件沿 W2方向在下半部分边缘上的圓弧面;
239代表主动刷毛保持件沿 W1方向在下半部分边缘上的圓弧面; 321代表位于框架内腔底端沿 W2方向和主动刷毛保持件在下半部分边 缘上的圓弧面接触的小平面;
322代表位于框架内腔底端沿 W1方向和主动刷毛保持件在下半部分边 缘上的圓弧面接触的小平面;
325代表位于框架上的用来容纳从动刷毛保持件的两侧卡扣部的凹槽; 326代表所述凹槽沿 W4方向的平面, 该平面和从动刷毛保持件上卡扣 部的上平面相应;
327代表所述凹槽中的内曲面;
328代表框架从动刷毛保持件运动中心孔;
329代表从动刷毛保持件运动轴。 具体实施方式
下文以电动牙刷为例并结合附图更详细地描述本发明的示例性实施例, 虽然下面仅以电动牙刷为例进行解释说明, 但本发明不限于此。 显然, 本发 明也可用于非电动牙刷或其他刷类。
在全部附图中, 类似的附图标记表示相似的部件。
为了清楚起见, 在本说明书中采用了表述空间相对位置的词语如 "上"、 "下"、 "上部"、 "下部"、 "左"、 "右" 等来筒单描述如图所示的一个元件或 特征与另一元件(一或多个)或特征(一或多个)的相互关系, 其中, "上"、 "下"、 "上部"、 "下部" 是相对于头部驱动轴轴线而言的, 面向相应视图沿 平行于头部驱动轴轴线的向上方向定义为 "上"、 "上部", 沿平行于头部驱 动轴轴线的向下方向定义为 "下"、 "下部"; "左" 和 "右" 是相对于头部驱 动轴轴线而言的, 面向相应视图沿垂直于头部驱动轴轴线的方向在头部驱动 轴轴线的左侧定义为 "左", 其右侧定义为 "右"。
尽管本说明书中使用了词语第一、 第二等来描述多个元件或构成部分, 这些元件或构成部分不应受这些词语的限制。这些词语仅用于区分一个元件 或构成部分和另一元件或构成部分, 而不包含 "顺序"。 因此, 将下面讨论 的那些元件或构成部分的序数词相互变换也没有超出本发明的构思和范围。
此外,本申请中使用的词汇 "和 /或"包括所列出的一或多个相关联的词汇 中的任一个和所有组合。
参照图 1-5 , 在本发明一实施例中, 电动牙刷 1包括可拆卸的刷部 30和 柄部 10。 可拆卸的刷部 30包括: 头部、 头部驱动轴 12、 联接件 16及接口 件 15。 头部包括: 与头部驱动轴 12可运动地联接的框架 32; 主动刷毛保持 件 23-1、 23-2、 23-3、 23-4; 从动刷毛保持件 21-1、 21-2、 21-3; 分别安装 于主动刷毛保持件 23-1、 23-2、 23-3、 23-4上的刷毛 25和分别安装于从动 刷毛保持件 21-1、 21-2、 21-3上的刷毛 27;及从动刷毛保持件运动轴 329 (参 见图 5和 11 )。 主动刷毛保持件 23-1、 23-2、 23-3、 23-4和从动刷毛保持件 21-1、 21-2、 21-3被设置为彼此交错地间隔开。 从动刷毛保持件 21-1、 21-2、 21-3可以接收来自相应的主动刷毛保持件 23-1、 23-2、 23-3、 23-4的动能而 运动。从动刷毛保持件运动轴 329的数量与从动刷毛保持件 21-1、 21-2、 21-3 的数量相等。主动刷毛保持件 23-1、 23-2、 23-3、 23-4和从动刷毛保持件 21-1、 21-2、 21-3的形状相应, 它们可以为任何形状。 为便于使用, 其厚度尺寸远 小于宽度尺寸, 宽度尺寸小于长度尺寸。 联接件 16用于联接头部驱动轴 12 和柄部驱动轴 14。头部驱动轴 12随柄部驱动轴 14的转动或摆动而摆动。接 口件 15用于装配刷部 30和柄部 10。
虽然在本实施例中, 如图所示, 主动刷毛保持件的数量为四, 即 23-1、 23-2、 23-3、 23-4, 从动刷毛保持件的数量为三, 即 21-1、 21-2、 21-3 , 但主 动刷毛保持件和从动刷毛保持件的数量可以根据需要任意地设置, 它们的数 量可以不等(如本实施例), 也可以相等。
使用者按压位于电动牙刷 1的柄部 10上的开关 11 (图 1 ) 时, 电动牙 刷 1的柄部 10中的电机(未示出 )启动, 通过常规的传动机构驱动柄部驱 动轴 14围绕其轴线 L。运动 (例如, 在本实施例中柄部驱动轴 14围绕其轴 线 Lo摆动, 当然柄部驱动轴 14也可围绕其轴线 Lo转动), 柄部驱动轴 14 通过联接件 16将动能传递给头部驱动轴 12, 使头部驱动轴 12绕其轴线 运动。 作为示例, 在本实施例中头部驱动轴 12围绕其轴线 摆动。 头部驱 动轴 12有间隙地穿过设于头部上的所有从动刷毛保持件 21-1、 21-2、 21-3 并和所有主动刷毛保持件 23-1、 23-2、 23-3、 23-4无相对运动地联接, 此外, 头部驱动轴 12和联接件 16也是无相对运动地联接。 主动刷毛保持件 23-1、 23-2、 23-3、 23-4随头部驱动轴 12绕 轴线的摆动而摆动, 主动刷毛保持 件 23-1、 23-2、 23-3、 23-4通过设置在主动刷毛保持件 23-1、 23-2、 23-3、 23-4和从动刷毛保持件 21-1、 21-2、 21-3之间的传动机构可以驱动从动刷毛 保持件 21-1、 21-2、 21-3围绕它们各自的运动轴线 L4、 L3、 L2摆动。 在所示 实施例中, 从动刷毛保持件 21-1、 21-2、 21-3分别围绕各自的与头部驱动轴 12的轴线 垂直的运动轴线 L4、 L3、 L2摆动, 从而使固定在主动刷毛保持 件 23-1、 23-2、 23-3、 23-4上的刷毛 25近似地绕头部驱动轴 12的轴线 摆动, 而使固定在从动刷毛保持件 21-1、 21-2、 21-3上的刷毛 27近似地绕 它们各自的运动轴线 L4、 L3、 L2摆动。
本发明对用于柄部 10的传动机构没有限制, 该传动机构可以是任何能 将电机的动能传递给柄部驱动轴 14使之运动 (转动或摆动) 的公知机构。 同样, 本发明对用于头部驱动轴 12的传动机构没有限制, 该传动机构可以 是任何能将柄部驱动轴 14的运动传递给头部驱动轴 12使之运动(转动或摆 动)的公知传动机构。 在本实施例中, 所述传动机构是可以分别使柄部驱动 轴 14和头部驱动轴 12摆动的公知传动机构。
在另一实施例中, 可将头部驱动轴 12设置成平行于上述头部驱动轴并 相对于固定轴轴线偏心, 且能绕该固定轴轴线做摆动运动。 在主动刷毛保持 件上设有与该固定轴配合的孔,该孔的尺寸可以略大于固定轴的尺寸,因此, 主动刷毛保持件和该固定轴可相对运动地联接。主动刷毛保持件被头部驱动 轴 12驱动绕固定轴轴线摆动。主动刷毛保持件上设有与头部驱动轴 12相配 合的孔, 该孔的尺寸可以略大于驱动轴 12的尺寸, 使得主动刷毛保持件与 头部驱动轴 12可相对运动地联接。
如图 2-5所示, 在本实施例中, 可将主动刷毛保持件 23-1、 23-2、 23-3、 23-4沿柄部 14的驱动轴轴线 L。的 W1方向从上至下顺序设置, 例如第四主 动刷毛保持件 23-4位于最上部,然后相继是第三、第二主动刷毛保持件 23-3、 23-2, 第一从动刷毛保持件 23-1位于最下部。 利用工业制刷的任何工艺可以 将刷毛 25分别固定在四个主动刷毛保持件 23-1、 23-2、 23-3、 23-4上。
各主动刷毛保持件 23-1、 23-2、 23-3、 23-4围绕头部驱动轴 12的轴线 均设有一个和头部驱动轴 12横截面形状匹配的孔, 此孔的尺寸与头部驱 动轴 12的横截面尺寸紧配, 致使将头部驱动轴 12装入所述孔中时, 各主动 刷毛保持件 23-1、 23-2、 23-3、 23-4和头部驱动轴 12无相对运动地联接在 一起。优选头部驱动轴 12的横截面为圓柱形,各主动刷毛保持件 23-1、 23-2、 23-3、 23-4上的孔为圓孔。 当然, 也可以将头部驱动轴 12和主动刷毛保持 件 23-1、 23-2、 23-3、 23-4注塑成一体以实现所述无相对运动的联接。
结合参见图 10-14, 类似地, 从动刷毛保持件 21-1、 21-2、 21-3可以是 沿柄部 14的驱动轴轴线 L。的 W1方向从上至下顺序设置, 例如第三从动刷 毛保持件 21-3位于最上部, 中间是第二从动刷毛保持件 21-2, 第一从动刷 毛保持件 21-1位于最下部。 利用工业制刷的任何工艺可以将刷毛 27分别固 定在三个从动刷毛保持件 21-1、 21-2、 21-3上。各从动刷毛保持件 21-1、 21-2、 21-3围绕头部驱动轴 12的轴线 分别设有一个和头部驱动轴 12横截面形 状匹配的孔 210,孔 210的尺寸大于头部驱动轴 12的横截面尺寸, 以确保头 部驱动轴 12和从动刷毛保持件 21-1、 21-2、 21-3在运动过程中不发生干涉。
主动刷毛保持件 23-1、 23-2、 23-3、 23-4和从动刷毛保持件 21-1、 21-2、 21-3被设置成彼此交错地间隔开。
为使各主动刷毛保持件 23-1、 23-2、 23-3、 23-4能将动能传递给其相应 的从动刷毛保持件 21-1、 21-2、 21-3 , 作为示例, 在本实施例中, 除最上部 的第四主动刷毛保持件 23-4 外, 在其他主动刷毛保持件 23-1、 23-2、 23-3 上各设有四个凸起, 如第一凸起 233、 第二凸起 234、 第三凸起 235和第四 凸起 236, 第一凸起 233和第二凸起 234被设置在主动刷毛保持件的上端面 上。 这些凸起在主动刷毛保持件 23-1、 23-2、 23-3的沿 W1方向的端面 (即 上端面)和 W2方向的端面 (即下端面)上分别彼此间隔地设置。 如图 6所 示,第一凸起 233和第二凸起 234被分别设置在主动刷毛保持件 23-1、 23-2、 23-3的上端面上。 更准确地讲, 第一凸起 233和第二凸起 234被设置成在所 述上端面上相对于头部驱动轴 12的轴线 左右对称, 即, 第一凸起 233和 第二凸起 234在上端面上呈 180。 配置。 类似地, 第三凸起 235和第四凸起 236被分别设置在主动刷毛保持件 23-1、 23-2、 23-3的下端面上, 更准确地 讲, 第三凸起 235和第四凸起 236被设置为在所述下端面上相对于头部驱动 轴 12的轴线 左右对称, 即, 第三凸起 235和第四凸起 236在下端面上呈 180。 配置。 主动刷毛保持件的上端面上的第一凸起 233和下端面上的第三 凸起 235被设置在轴线 L1的左侧, 它们以包含主动刷毛保持件的厚度方向 (即 Wi—W2方向)中心线且与轴线 垂直的平面对称。主动刷毛保持件的 上端面上的第二凸起 234和下端面上的第四凸起 236被设置在轴线 的右 侧, 它们以包含主动刷毛保持件的厚度方向的中心线且与轴线 垂直的平 面对称。
凸起 233、 234、 235、 236既可以作为独立件分别装配到相应端面上, 也可通过注塑和相应端面成为一体。 此外, 对于主动刷毛保持件设置的凸起 数量没有限制, 可以多于或少于四。 而且各主动刷毛保持件上设置的凸起数 量可以相同也可以不同。 例如, 在本实施例中, 主动刷毛保持件 23-1、 23-2、 23-3分别设有四个凸起 233、 234、 235、 236, 而主动刷毛保持件 23-4只设 有两个凸起 235、 236。 此外, 这些凸起可以为任何形状, 例如, 可以是小平 面, 也可以是曲面。 优选这些凸起呈部分圓柱面的形状。
图 6-9详细地示出了凸起 233、 234、 235、 236的相对位置, 如图 7所 示, 在本实施例中, 主动刷毛保持件沿 W4方向以头部驱动轴 12的轴线 为界其左半部分设置有圓弧面, 朝向 \\^方向的圓弧面用 238 表示, 朝向 W2方向的圓弧面用 239表示, 在图 8和图 9中更清楚地示出了圓弧面 238、 239。
为使从动刷毛保持件 21-1、 21-2、 21-3接收来自主动刷毛保持件 23-1、
23-2、 23-3、 23-4的动能, 本实施例中, 在各从动刷毛保持件 21-1、 21-2、 21-3的沿 方向的端面 (即上端面)和 W2方向的端面 (即下端面)上分 别设有间隔开的斜面, 例如分别为第一斜面 213、 第二斜面 214、 第三斜面 215和第四斜面 216, 这些斜面分别与主动刷毛保持件上相应的凸起 233、 234、 235、 236的运动轨迹相应。
如图 10所示, 第一斜面 213和第二斜面 214分别设置在各从动刷毛保 持件 21-1、 21-2、 21-3的下端面上, 更准确地讲, 第一斜面 213设置在下端 面上以头部驱动轴 12的轴线 为界的左半部分上, 第二斜面 214设置在下 端面上以头部驱动轴 12的轴线 为界的右半部分上。 第三斜面 215和第四 斜面 216分别设置在各从动刷毛保持件 21-1、 21-2、 21-3的上端面上, 更准 确地讲, 第三斜面 215设置在上端面上以头部驱动轴 12的轴线 为界的左 半部分上, 第四斜面 214设置在上端面上以头部驱动轴 12的轴线 为界的 右半部分上。 第二斜面 214和第一斜面 213关于轴线 L4和 所形成的平面 对称, 第三斜面 214和第四斜面 213关于轴线 1^4和 所形成的平面对称。
现仅以从动刷毛保持件 21-1 为例来说明第一斜面 213的设置。 不言而 喻, 其他从动刷毛保持件的斜面设置与此类似。 如图 13所示, 以包含头部 结构的顶点并垂直于头部驱动轴 12的轴线 的平面作为参考面, 定义第一 斜面 213的下边缘为其下部起始线 213A, 定义第一斜面 213的上边缘为其 上部终止线 213B。本实施例中第一斜面 213的上部终止线 213B距离参考面 的最短距离大于第一斜面 213上的起始线 213A距离参考面的最短距离, 此 两距离差为 AS213。 即, 沿 W2方向 213B线在 213A线的 AS213处。 如图 13 所示, 斜面延伸部分 213-1为第一斜面 213向上延伸的部分, 斜面延伸部分 213-1的一个端边缘以 213B线为界, 另一端边缘以头部驱动轴 12的轴线 转动 β角的轴线 L5投影到 W2方向的下端面上的线为界。在本实施例中,斜 面延伸部分 213-1是以第一斜面 213上的上部终止线 213B绕头部驱动轴 12 的轴线 扫掠而成的面, 因此,斜面延伸部分 213-1上由第一斜面 213上的 上部终止线 213B扫掠而成的线和第一斜面 213上的上部终止线 213B具有 距参考面相同的最短距离。
同样, 如图 13所示, 斜面延伸部分 213-2为第一斜面 213向下延伸的 部分。 斜面延伸部分 213-2的一端边缘以第一斜面 213上的起始线 213A为 界,另一端边缘以头部驱动轴 12的轴线 转动 β角的轴线 L5投影到 W2方 向的端面上的线为界。 本实施例中, 斜面延伸部分 213-2是以第一斜面 213 上的起始线 213A线绕头部驱动轴 12的轴线 扫掠而成的面, 因此斜面延 伸部分 213-2上由第一斜面 213上的起始线 213A扫掠而成的线和第一斜面 213上的起始线 213A具有距参考面相同的最短距离。 此外, 下端面上还设 有第二斜面 214和斜面延伸部分 214-1、 214-2。
在本实施例中,头部驱动轴 12的轴线 和第一从动刷毛保持件 21-1的 运动轴线 L4垂直, 第二斜面 214和第一斜面 213对应于头部驱动轴 12的轴 线 和第一从动刷毛保持件 21-1的运动轴线 L4形成的平面对称;斜面延伸 部分 214-1和斜面延伸部分 213-1对应于头部驱动轴 12的轴线 和第一从 动刷毛保持件 21-1的运动轴线 L4形成的平面对称; 斜面延伸部分 214-2和 斜面延伸部分 213-2对应于头部驱动轴 12的轴线 和第一从动刷毛保持件 21-1的运动轴线 L4形成的平面对称。
类似地, 在上端面上也设有第三斜面 215、 斜面延伸部分 215-1、 斜面 延伸部分 215-2、 第四斜面 216、 斜面延伸部分 216-1、 斜面延伸部分 216-2。 如图 10所示, 第三斜面 215和第一斜面 213分别设置在上、 下端面上, 第 四斜面 216和第二斜面 214分别设置在上、 下端面上。 第三斜面 215设置在 从动刷毛保持件的上端面上, 更准确地讲, 第三斜面 215设置在上端面上以 头部驱动轴 12的轴线 为界的左半部分处, 在图 14中, 其被示出为在以 头部驱动轴 12的轴线 转动 β角的轴线 L5为界的右半部分的上端面上。
下面以从动刷毛保持件 21-1为例说明第三斜面 215的设置。 不言而喻, 其他从动刷毛保持件的斜面设置与此类似。 如图 14所示, 以包含头部结构 的顶点垂直于头部驱动轴 12的轴线 的平面作为参考面,定义第三斜面 215 的下边缘为其下部起始线 215A, 定义第三斜面 215的上边缘为其上部终止 线 215B。 本实施例中, 第三斜面 215上的上部终止线 215B距离参考面的最 短距离大于第三斜面 215的上部起始线 215A距离参考面的最短距离, 此两 距离差为 AS215。 即, 沿 W2方向 215B线在 215A线的 AS215处。 如图 14所 示, 斜面 215-1为第三斜面 215向上延伸的部分, 斜面延伸部分 215-1的一 个端边缘以 215B线为界, 另一端边缘以头部驱动轴 12的轴线 转动 β角 的轴线 L5投影到沿\\^方向的上端面上的线为界。 在本实施例中, 斜面延伸 部分 215-1是以第三斜面 215上的上部终止线 215B绕头部驱动轴 12的轴线 扫掠而成的面, 因此, 斜面延伸部分 215-1上由第三斜面 215上的上部终 止线 215B扫掠而成的线和第三斜面 215上的上部终止线 215B具有距参考 面相同的最短距离。
同样, 如图 14所示, 斜面 215-2为第三斜面 215向下延伸的部分。 斜 面延伸部分 215-2的一端以第三斜面 215上的起始线 215A为界, 另一端以 头部驱动轴 12的轴线 转动 β角的轴线 L5投影到沿 方向的上端面上的 线为界。本实施例中,斜面延伸部分 215-2是以第三斜面 215上的起始线 215A 线绕头部驱动轴 12的轴线 扫掠而成的面, 因此斜面延伸部分 215-2上由 第三斜面 215上的起始线 215A扫掠而成的线和第三斜面 215上的起始线 215 A具有距参考面相同的最短距离。
如图 14所示, 各从动刷毛保持件 21-1、 21-2、 21-3的底端设有从动刷 毛保持件运动孔 219,此孔和设置在框架 32上的相应的从动刷毛保持件运动 轴 329动配合, 孔 219和从动刷毛保持件运动轴 329的配合约束了从动刷毛 保持件只能分别围绕从动刷毛保持件运动轴 329的轴线 L2、 L3、 L4摆动。
参见图 13-17, 各从动刷毛保持件 21-1、 21-2、 21-3还对称地设有卡扣 部 211 , 每一"" ^扣部 211的外侧面都为圓弧面 217, 卡扣部圓弧面 217的圓 弧中心落在其相应的从动刷毛保持件 21-1、 21-2、 21-3的运动轴线 L2、 L3、 L4上。 卡扣部 211沿 W3方向形成上平面 218, 上平面 218和框架上的凹槽 表面 326 (图 17 )配合, 上平面 218和表面 326在从动刷毛保持件运动过程 中始终部分重叠, 因此, 平面 218和表面 326的配合约束了从动刷毛保持件 沿 W3方向的运动, 从而保证从动刷毛保持件在整个运动过程中始终被约束 在框架 32内。 框架 32上设有框架凹槽 325 (如图 15所示;), 框架凹槽 325 用于容纳相应的从动刷毛保持件上的卡扣部 211。框架 32上的凹槽 325具有 和卡扣部圓弧面 217相对应的凹槽内曲面 327, 优选凹槽内曲面 327为圓弧 面, 优选卡扣部圓弧面 217与其相对应的凹槽内圓弧面 327配合时, 凹槽内 圓弧面 327和卡扣部圓弧面 217共中心线。 在从动刷毛保持件运动过程中, 凹槽内圓弧面 327和卡扣部圓弧面 217始终保持合适的周边间隙, 例如该周 边间隙可以为 0.02mm— 0.08mm的范围。
在另一实施例中,也可以省去从动刷毛保持件运动孔 219和从动刷毛保 持件运动轴 329。 在这种情况下, 借助同心的凹槽内圓弧面 327和卡扣部圓 弧面 217 可以约束从动刷毛保持件只能围绕其各自的运动轴线 L2、 L3、 L4 摆动。 此时, 优选凹槽内圓弧面 327和卡扣部圓弧面 217之间的周边间隙为 0.02mm― 0.05mm„
如图 15和 16所示, 框架 32上设有数量与从动刷毛保持件数量相应的 框架从动刷毛保持件运动中心盲孔 328 , 该孔的中心分别位于相应的运动轴 线 L2、 L3、 L4上。 如图 16所示, 相应的从动刷毛保持件运动轴 329、 框架 从动刷毛保持件运动中心孔 328与从动刷毛保持件运动轴 329紧配, 以保证 从动刷毛保持件运动轴 329和框架从动刷毛保持件运动中心孔 328无相对运 动地联接。 当然也可通过注塑工艺使它们成一体。
如图 3所示, 框架 32还包括数量与主动刷毛保持件相应的主动刷毛保 持件运动约束平面, 这些主动刷毛保持件运动约束平面中沿 方向的平面 例如以 322表示, 主动刷毛保持件运动约束平面中沿 W2方向的平面例如以 321表示,每一对彼此相向的约束平面 322和 321容纳一个主动刷毛保持件。 约束平面 321 和沿 方向的主动刷毛保持件在下半部分边缘上的圓弧面 239对应,约束平面 321和圓弧面 239之间的周边间隙例如可以为 0.03mm— 0.05mm的范围。约束平面 322和沿 W2方向的主动刷毛保持件在下半部分边 缘上的圓弧面 238对应,优选约束平面 322和圓弧面 238之间的周边间隙为 0.03mm— 0.05mm。约束平面 321和 322可以约束主动刷毛保持件沿 方向 和 W2方向的过度运动。
如图 16所示, 架 32上设有头部驱动轴孔 3211 , 头部驱动轴孔 3211 和头部驱动轴 12共轴线, 且头部驱动轴孔 3211的尺寸比头部驱动轴 12略 大, 以使头部驱动轴 12相对于头部驱动轴孔 3211有间隙地运动。 头部驱动 轴 12可以为任何形状, 优选为圓柱形, 此时头部驱动轴孔 3211为圓形。 优 选头部驱动轴孔 3211 的直径比头部驱动轴 12 的直径大, 例如可以大 0.04mm— 0.09mm。
运动分析
如图所示, 当主动刷毛保持件 23-1上的第一凸起 233和从动刷毛保持 件 21-1的第一斜面 213的下部起始线 213A线吻合时,主动刷毛保持件 23-1 上的第二凸起 234 和从动刷毛保持件 21-1 的第二斜面 214 的上部终止线 214B吻合, 主动刷毛保持件 23-2上的第三凸起 235和从动刷毛保持件 21-1 的第三斜面 215的下部起始线 215A吻合,主动刷毛保持件 23-2上的第四凸 起 236和从动刷毛保持件 21-1的第四斜面 216的上部终止线 216B吻合。
当主动刷毛保持件 23-2上的第一凸起 233和从动刷毛保持件 21-2的第 一斜面 213的下部起始线 213A线吻合时,主动刷毛保持件 23-2上的第二凸 起 234和从动刷毛保持件 21-2的第二斜面 214的上部终止线 214B吻合, 主 动刷毛保持件 23-3上的第三凸起 235和从动刷毛保持件 21-2的第三斜面 215 的下部起始线 215A吻合,主动刷毛保持件 23-3上的第四凸起 236和从动刷 毛保持件 21-2的第四斜面 216的上部终止线 216B吻合。 当主动刷毛保持件 23-3上的第一凸起 233和从动刷毛保持件 21-3的第 一斜面 213的下部起始线 213A线吻合时,主动刷毛保持件 23-3上的第二凸 起 234和从动刷毛保持件 21-3的第二斜面 214的上部终止线 214B吻合, 主 动刷毛保持件 23-4上的第三凸起 235和从动刷毛保持件 21-3的第三斜面 215 的下部起始线 215A吻合,主动刷毛保持件 23-4上的第四凸起 236和从动刷 毛保持件 21-3的第四斜面 216的上部终止线 216B吻合。
现以从动刷毛保持件 21-1为例进行分析。当主动刷毛保持件 23-1、23-2、 23-3、 23-4被头部驱动轴 12驱动绕其轴线 沿顺时针方向运动 (例如转动 60。 ) 时, 主动刷毛保持件 23-1上的第一凸起 233沿从动刷毛保持件 21-1 从第一斜面 213的下部起始线 213A到第一斜面 213的上部终止线 213B的 方向运动, 由于上部终止线 213B和下部起始线 213A之间存在差值 AS213, 即上部终止线 213B更靠近主动刷毛保持件 23-1 ,且从动刷毛保持件 21-1的 运动被从动刷毛保持件运动轴 329约束, 即, 从动刷毛保持件 21-1只能绕 从动刷毛保持件运动轴 329的轴线 L4摆动,所以,随着主动刷毛保持件 23-1 的摆动, 从动刷毛保持件 21-1通过主动刷毛保持件 23-1的第一凸起 233和 从动刷毛保持件 21 - 1的第一斜面 213协同作用可以驱动从动刷毛保持件 21-1 绕轴线 L4顺时针运动。
当主动刷毛保持件 23-1上的第一凸起 233沿从动刷毛保持件 21-1从第 一斜面 213的下部起始线 213A运动到上部终止线 213B时, 可使主动刷毛 保持件 23-1绕轴线 顺时针转动 γ角, γ角可以为 30° 至 70° , 优选为 60° 。 相应地, 从动刷毛保持件 21-1绕轴线 L4顺时针转动 σ角, σ角可以 约为 1。 至 8。 , 优选为 4° 。 σ角的大小取决于 8213的大小, AS213越大, σ角越大。 σ角随 γ角变化的函数关系 ( σ =f ( γ ) )可以任意设定, 这些变 换均未超出本发明的范围。
同理,当主动刷毛保持件 23-2上的第四凸起 236沿从动刷毛保持件 21-1 从第四斜面 216的上部终止线 216B向下部起始线 216A运动时, 主动刷毛 保持件 23-2上的第四凸起 236与主动刷毛保持件 23-1上的第一凸起 233作 用一样, 主动刷毛保持件 23-2绕轴线 顺时针转动 γ角。 相应地, 从动刷 毛保持件 21-1绕轴线 L4顺时针转动 σ角。 同样, σ角的大小取决于 AS216 的大小。 本实施例中 AS216 =AS213, 所以, 当 γ =60。 , σ =4。 。
通过对主动刷毛保持件 23-1上的第二凸起 234和从动刷毛保持件 21-1 的第二斜面 214的关系进行分析可知, 主动刷毛保持件 23-1上的第二凸起 234将从动刷毛保持件 21-1的第二斜面 214沿从上部终止线 214B向下部起 始线 214A运动,由于上部终止线 214B和下部起始线 214A存在差值 AS214, 即上部终止线 214B更靠近主动刷毛保持件 23-1 ,且从动刷毛保持件 21-1的 第二斜面 214和第一斜面 213关于轴线 L4和 所形成的平面对称, 所以, 当主动刷毛保持件 23-1的第一凸起 233顺时针运动使从动刷毛保持件 21-1 绕 L4轴转动 σι角时, 从动刷毛保持件 21-1的第二斜面 214也允许从动刷毛 保持件 21-1绕运动轴线 L4转动 σι角。 也就是说, 在此运动过程中, 第二凸 起 234不和从动刷毛保持件 21-1干涉。 即从动刷毛保持件 21-1的第二斜面 214不会阻碍从动刷毛保持件 21-1的运动。 当主动刷毛保持件 23-1的第一 凸起 233终止于上部终止线 213B线时,主动刷毛保持件 23-1的第二凸起 234 终止于下部起始线 214Α。
同样可分析主动刷毛保持件 23-2第三凸起 235和从动刷毛保持件 21-1 的第三斜面 215的关系, 主动刷毛保持件 23-2的第三凸起 235和从动刷毛 保持件 21-1的第三斜面 215的运动关系与主动刷毛保持件 23-1的第二凸起 234和从动刷毛保持件 21-1的第二斜面 214的运动关系相同,两者的作用亦 相同。
通过上述分析可知, 主动刷毛保持件的第一凸起 233吻合从动刷毛保持 件 21-1的第一斜面 213的下部起始线 213A时,主动刷毛保持件开始绕轴线 顺时针运动, 主动刷毛保持件 23-1上的第一凸起 233和主动刷毛保持件 23-2上的第四凸起 236中的任一个或二个同时驱动从动刷毛保持件 21-1绕 L4轴线顺时针运动, 通过主动刷毛保持件 23-1的第二凸起 234和从动刷毛 保持件 21-1的第二斜面 214的协同作用以及主动刷毛保持件 23-2的第三凸 起 235和从动刷毛保持件 21-1的第三斜面 215的协同作用可以有效地避免 干扰从动刷毛保持件 21-1的顺时针运动。
同样分析可得, 当主动刷毛保持件 23-1 的第二凸起 234吻合从动刷毛 保持件 21-1的第二斜面 214的下部起始线 214A时, 主动刷毛保持件 23-1 开始绕轴线 逆时针运动, 主动刷毛保持件 23-1上的第二凸起 234和主动 刷毛保持件 23-2上的第三凸起 235 中的任一个或二个同时驱动从动刷毛保 持件 21-1绕轴线 L4逆时针运动, 通过主动刷毛保持件 23-1的第一凸起 233 和从动刷毛保持件 21-1的第一斜面 213的协同作用以及主动刷毛保持件 23-2 的第四凸起 236和从动刷毛保持件 21-1的第四斜面 216的协同作用可以有 效地避免干扰从动刷毛保持件 21-1的运动。
其他主动刷毛保持件和从动刷毛保持件的运动关系与上述相同,在此不 再赘述。
当主动刷毛保持件的第一凸起 233和从动刷毛保持件的第一斜面 213的 上部终止线 213B吻合时, 各主动刷毛保持件和从动刷毛保持件与头部驱动 轴 12的运动状态如图 4、 图 5所示。
同样, 主动刷毛保持件绕轴线 逆时针运动时, 主动刷毛保持件的第 二凸起 234、 第三凸起 235驱动从动刷毛保持件绕轴线 L4 (或 L2或 L3 )逆 时针运动,通过主动刷毛保持件的第一凸起 233和从动刷毛保持件的第一斜 面 213的协同作用及主动刷毛保持件的第四凸起 236和从动刷毛保持件的第 四斜面 216的协同作用可以有效地避免干扰从动刷毛保持件的逆时针运动。 因此, 主动刷毛保持件的第三凸起 235和第二凸起 234的作用相同, 第四凸 起 236和第一凸起 233的作用相同, 主动刷毛保持件的第三凸起 235或第二 凸起 234和主动刷毛保持件的第一凸起 233或第四凸起 236的在运转中作用 相反。
本发明通过对称地设置多组突出方向相反的凸起和相应的多个与凸起
L2或 L3或 L4 )运动。 优选从动刷毛保持件的运动轴线(如 L2、 L3、 L4 )如 图 3所示地垂直于头部驱动轴轴线 。
此外, 从动刷毛保持件的运动轴线可以被设置成和头部驱动轴 平行 或重叠, 或者成任一夹角。
虽然上面以在主动刷毛保持件上对称地设置凸起和在从动刷毛保持件 上对称地设置斜面为例进行了说明, 所属领域技术人员也可想到, 主动刷毛 凸起和斜面的协同作用主动刷毛保持件的运动能驱动从动刷毛保持件绕它 们的运动轴线顺时针或逆时针运动过程中凸起和 /或斜面的位置不影响从动 刷毛保持件的运动即可。
作为另一实施例, 也可以在主动刷毛保持件上设置斜面, 在从动刷毛保 持件上设置相应的凸起。 在这种情况下, 斜面为作动部, 而凸起为从动部, 但斜面和凸起的运动关系与上述实施例相似, 此处不再赘述。 虽然, 作为示例, 在所示实施例中针对电动牙刷进行了说明, 但这并非 是对本发明的限制, 本发明也可用于非电动牙刷或其他刷类。
显然, 以上描述只是示例性的, 在不超出本发明的由权利要求所限定的 范围的前提下, 所属领域技术人员还可以作出多种变换和改型, 这些变换和 改型均应落入本发明的由权利要求所限定的范围。

Claims

权利要求书
1、 一种刷类用品的头部结构, 包括:
与头部驱动轴可运动地联接的框架;
与头部驱动轴联接、 由头部驱动轴驱动的至少一个主动刷毛保持件, 用 于在其上安装刷毛; 以及
从动刷毛保持件, 其与所述主动刷毛保持件彼此交错地间隔设置, 用于 在其上安装刷毛,
其中, 所述从动刷毛保持件被框架约束地由所述主动刷毛保持件驱动而 绕各自的运动轴线运动; 所述至少一个主动刷毛保持件中的至少一个在其沿 纵向轴线的端面上设有至少一个凸起,在从动刷毛保持件的被该主动刷毛保 至少一个被驱动点比该斜面和其相应的所述凸起的接触点或接触线或接触 面更靠近所述主动刷毛保持件, 以便在运动过程中, 从动刷毛保持件被主动 刷毛保持件驱动。
2、 如权利要求 1 所述的头部结构, 其中, 所述头部驱动轴随所述刷类 用品的由电机 ^:动的柄部 ^:动轴的运动而运动。
3、 如权利要求 1或 2所述的头部结构, 其中, 所述主动刷毛保持件的 端面上设有至少两个在运转中作用相反的凸起,在被该主动刷毛保持件驱动 凸起被设置在主动刷毛保持件的沿平行于头部驱动轴轴线的向上方向的上 上, 第一凸起和第二凸起相对于头部驱动轴的轴线处于同侧, 当所述第一凸 保持件作从动运动时,所述第二凸起和被设置在相应从动刷毛保持件上的相 应斜面协同作用, 不干扰所述从动刷毛保持件的从动运动。
4、 如权利要求 1或 2所述的头部结构, 其中, 所述主动刷毛保持件的 端面上设有至少两个在运转中作用相反的凸起,在被该主动刷毛保持件驱动 凸起和第二凸起均被设置在主动刷毛保持件的沿平行于头部驱动轴轴线的 向上方向的上端面上或均被设置在主动刷毛保持件的与所述上端面相反的 下端面上, 第一凸起和第二凸起被设置成在所述上端面或下端面上相对于头 部驱动轴的轴线处于不同侧, 当所述第一凸起和被设置在相应从动刷毛保持 件上的相应斜面协同作用驱动该从动刷毛保持件作从动运动时,所述第二凸 起和被设置在相应从动刷毛保持件上的相应斜面协同作用, 不干扰所述从动 刷毛保持件的从动运动。
5、 如权利要求 1或 2所述的头部结构, 其中, 所述主动刷毛保持件上 成组地设有多个凸起, 第一组凸起与第二组凸起的突出方向相反, 第一组凸 起被设置成在主动刷毛保持件的沿平行于头部驱动轴轴线的向上方向的上 端面上相对于头部驱动轴的轴线左右对称, 第二组凸起被设置成在主动刷毛 第一组凸起和第一组凸起中相对于头部驱动轴的轴线同侧的突出方向相反 的凸起以包含相应主动刷毛保持件的厚度方向、 即平行于所述头部驱动轴轴 线的向上或向下方向的中心线并与头部驱动轴的轴线垂直的平面对称。
6、 一种刷类用品的头部结构, 包括:
与头部驱动轴可运动地联接的框架;
与头部驱动轴联接、 由头部驱动轴驱动的至少一个主动刷毛保持件, 用 于在其上安装刷毛; 以及
从动刷毛保持件, 其与所述主动刷毛保持件彼此交错地间隔设置, 用于 在其上安装刷毛,
其中, 所述从动刷毛保持件被框架约束地由所述主动刷毛保持件驱动而 绕各自的运动轴线运动; 所述至少一个主动刷毛保持件中的至少一个在其沿 纵向轴线的端面上设有至少一个斜面,在从动刷毛保持件的被该主动刷毛保 至少一个驱动点比该斜面和其相应的所述凸起的接触点或接触线或接触面 更靠近所述从动刷毛保持件, 以便在运动过程中, 从动刷毛保持件被主动刷 毛保持件驱动。
7、 如权利要求 6所述的头部结构, 其中, 所述头部驱动轴随所述刷类 用品的由电机^:动的柄部^:动轴的运动而运动。
8、 如权利要求 6或 7所述的头部结构, 其中, 所述主动刷毛保持件的 端面上设有至少两个在运转中作用相反的斜面,在被该主动刷毛保持件驱动 斜面被设置在主动刷毛保持件的沿平行于头部驱动轴轴线的向上方向的上 端面上, 第二斜面被设置成在主动刷毛保持件的与所述上端面相反的下端面 上, 第一斜面和第二斜面相对于头部驱动轴的轴线处于同侧, 当所述第一斜 保持件作从动运动时,所述第二斜面和被设置在相应从动刷毛保持件上的相 应凸起协同作用, 不干扰所述从动刷毛保持件的从动运动。
9、 如权利要求 6或 7所述的头部结构, 其中, 所述主动刷毛保持件上 的端面设有至少两个在运转中作用相反的斜面,在被该主动刷毛保持件驱动 斜面和第二斜面均被设置在主动刷毛保持件的沿平行于头部驱动轴轴线的 向上方向的上端面上或均被设置在主动刷毛保持件的与所述上端面相反的 下端面上, 第一斜面和第二斜面被设置成在所述上端面或下端面上相对于头 部驱动轴的轴线处于不同侧, 当所述第一斜面和被设置在相应从动刷毛保持 件上的相应斜面协同作用驱动该从动刷毛保持件作从动运动时,所述第二斜 面和被设置在相应从动刷毛保持件上的相应凸起协同作用, 不干扰所述从动 刷毛保持件的从动运动。
10、 如权利要求 6或 7所述的头部结构, 其中, 所述主动刷毛保持件上 成组地设有多个斜面, 第一组斜面被设置成在主动刷毛保持件的沿平行于头 部驱动轴轴线的向下方向的下端面上相对于头部驱动轴的轴线左右对称, 第 于头部驱动轴的轴线左右对称, 第一组斜面以包含相应主动刷毛保持件的厚 度方向、 即平行于所述头部驱动轴轴线的向上或向下方向的中心线并与头部 驱动轴的轴线垂直的平面对称且绕头部驱动轴的轴线顺时针旋转 180° 形成 第二组斜面。
11、 如权利要求 1、 2、 6或 7中任一项所述的头部结构, 其中, 所述从 动刷毛保持件的运动轴线与头部驱动轴的轴线垂直。
12、 如权利要求 1、 2、 6或 7中任一项所述的头部结构, 其中, 所述主 动刷毛保持件绕头部驱动轴轴线摆动, 所述从动刷毛保持件绕其各自的运动 轴线摆动。
13、 如权利要求 12所述的头部结构, 其中, 所述主动刷毛保持件绕头 动 σ角。
14、 如权利要求 13所述的头部结构, 其中, 所述 γ角为 30° 至 70° , 所述 σ角为 至 8° 。
15、 如权利要求 14所述的头部结构, 其中, 所述 γ角为 60° , 所述 σ 角为 4° 。
PCT/CN2013/073728 2012-07-23 2013-04-03 刷类用品的头部结构 Ceased WO2014015683A1 (zh)

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US14/417,123 US9827080B2 (en) 2012-07-23 2013-04-03 Head structure of a brush appliance
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EP3106125A1 (en) * 2015-06-17 2016-12-21 Braun GmbH Oral hygiene implement and method of assembling an oral hygiene implement
CN115281871B (zh) * 2022-07-04 2023-12-01 深圳素士科技股份有限公司 牙刷头和电动牙刷

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CN102743016B (zh) 2014-06-04
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