WO2020019197A1 - 剃须刀及刀头连接轴 - Google Patents

剃须刀及刀头连接轴 Download PDF

Info

Publication number
WO2020019197A1
WO2020019197A1 PCT/CN2018/097048 CN2018097048W WO2020019197A1 WO 2020019197 A1 WO2020019197 A1 WO 2020019197A1 CN 2018097048 W CN2018097048 W CN 2018097048W WO 2020019197 A1 WO2020019197 A1 WO 2020019197A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating shaft
cutter head
driving
shaft
cutting unit
Prior art date
Application number
PCT/CN2018/097048
Other languages
English (en)
French (fr)
Inventor
孟凡迪
邱云峰
Original Assignee
舒可士（深圳）科技有限公司
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 舒可士（深圳）科技有限公司 filed Critical 舒可士（深圳）科技有限公司
Priority to PCT/CN2018/097048 priority Critical patent/WO2020019197A1/zh
Publication of WO2020019197A1 publication Critical patent/WO2020019197A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards

Definitions

  • the invention belongs to the field of razors, and more particularly, relates to a cutter head connecting shaft and a shaver using the cutter head connecting shaft.
  • the cutting unit of the shaver (also commonly referred to as the cutter head) is generally installed in a floating structure so that it can better fit the skin when cutting.
  • the cutting unit is generally connected to the shaver driving mechanism through a cutter head connecting shaft, and the driving mechanism drives the cutter head connecting shaft to rotate, thereby driving the movable blade in the cutting unit to rotate.
  • the tool head connecting shaft generally has a head and a substantially triangular shape, so that the head of the connecting shaft can allow a large gap to cooperate with the cavity of the cutting unit, and reduce the accuracy requirements of the fit.
  • the head of this cutter head connecting shaft is often made smaller.
  • the contact point between the head and the cutting unit is closer to the axis of the cutter head connecting shaft.
  • the object of the present invention is to provide a shaver and a cutter head connecting shaft, so as to solve the problem that the driving torque of the shaver head connecting shaft in the prior art is small.
  • the technical solution adopted by the present invention is to provide a cutter head connecting shaft, which includes a connecting body for connecting a driving mechanism of a shaver and a connecting head for connecting a cutting unit.
  • the connecting body has The axis of rotation, the connecting head is mounted on one end of the connecting body in the axial direction, and the connecting head includes at least one rotating shaft connected to the connecting body at one end and at least one end disposed on the other end of the rotating shaft rotationally symmetrically
  • Two driving blocks, the axis of the rotating shaft and the axis of rotation are on the same straight line, and each of the driving blocks is protruded from the side of the corresponding end of the rotating shaft in a radial direction of the rotating shaft.
  • an end surface of the other end of the rotating shaft is spherical, a spherical center of the spherical surface on which the other end surface of the rotating shaft is located is on an axis of the rotating shaft, and an end surface of one end of each driving block far away from the connecting body
  • the end surface of the other end of the rotating shaft has a smooth transition.
  • an end surface of one end of each of the driving blocks away from the connection body is spherical, and an end surface of the other end of the rotating shaft and an end surface of each of the drive blocks away from the connection body are on the same sphere surface.
  • an end surface of each of the driving blocks near one end of the connection body is spherical.
  • a radius of curvature of an end surface of each of the driving blocks near the end of the connection body is smaller than a radius of curvature of an end surface of the driving block far from the end of the connection body.
  • each of the driving blocks has an outer surface remote from the rotating shaft, and the outer surface is an arc surface coaxial with the rotating shaft.
  • each of the driving blocks has two side surfaces adjacent to a side surface of the rotating shaft, and the two side surfaces are disposed in parallel.
  • two adjacent driving blocks are arranged at intervals.
  • a rounded corner is provided on an edge of one side of each of the driving blocks away from the rotating shaft, a rounded corner is provided on one side of each of the driving blocks away from the connection body, and each of the driving blocks is close to the connection.
  • the sides of one end of the main body are provided with rounded corners.
  • connection body is larger than a diameter of the rotating shaft, and an accommodation cavity is defined in the connection body.
  • connection body and the rotating shaft.
  • a plurality of connecting rods are protruded from a side of an end of the connecting body remote from the connecting head, and a plurality of the connecting rods are provided at corresponding ends of the connecting body in a rotationally symmetrical manner.
  • each of the connecting rods is arcuate.
  • a chamfer is provided on an edge of a free end of each of the connecting rods away from the connecting head.
  • Another object of the present invention is to provide a shaver including a cutting unit, a driving mechanism for driving the cutting unit, and a cutter head connecting shaft connecting the driving mechanism and the cutting unit, and the cutter head connecting shaft is as described above.
  • the cutting unit has a concave cavity into which the connecting head extends, and the concave cavity has a groove into which each of the driving blocks extends.
  • the beneficial effect of the cutter head connecting shaft provided by the present invention is that, compared with the prior art, the present invention provides at least two driving blocks rotationally symmetrically at the end of the rotating shaft to form a connecting head, and each driving block is formed by a corresponding one of the rotating shafts.
  • the side of the end is convexly arranged, so that the side of each driving block can contact the side wall of the cavity of the cutting unit to drive the cutting unit, that is, a larger gap can be allowed to fit the connecting head with the cavity of the cutting unit.
  • the razor provided by the present invention has the beneficial effect that, compared with the prior art, the razor of the present invention uses the above-mentioned blade head connecting shaft, which can increase the driving torque, reduce the loss, and improve the driving of the cutting unit. Force, which in turn improves shaving results.
  • FIG. 1 is a schematic diagram of a partial structure of a shaver according to an embodiment of the present invention
  • FIG. 2 is a schematic structural sectional view of a portion of the razor of FIG. 1;
  • FIG. 3 is a first schematic view of a three-dimensional structure of a cutter head connecting shaft according to an embodiment of the present invention
  • FIG. 4 is a second schematic view of the three-dimensional structure of the cutter head connecting shaft according to the embodiment of the present invention.
  • FIG. 5 is a schematic structural plan view of the cutter head connecting shaft shown in FIG. 4;
  • Fig. 6 is a sectional structural view taken along line A-A in Fig. 5;
  • FIG. 7 is a schematic structural diagram of a cutter head connecting shaft and a gear base according to an embodiment of the present invention.
  • FIG. 8 is a schematic cross-sectional structural diagram of a cutter head connecting shaft according to an embodiment of the present invention when a cutting unit is connected to a gear base;
  • FIG. 9 is a schematic structural diagram when a connection head of a cutter head connection shaft and a cutting unit are connected according to an embodiment of the present invention.
  • each figure in the figure is mainly marked with:
  • 2-drive mechanism 20-gear seat; 21-connecting sleeve; 211-receiving hole; 212-notch; 22-locating column; 25-spring;
  • 3- cutter head connecting shaft 31- connecting body; 311-receiving cavity; 313- convex ring; 314-conical transition section; 32- connecting rod; 34- connecting head; 35- rotating shaft; 353- opening; 36-Drive Block.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “plurality” is two or more, unless specifically defined otherwise.
  • the meaning of “several” is one or more, unless specifically defined otherwise.
  • the shaver includes a cutting unit 1, a driving mechanism 2 that drives the cutting unit 1, and a cutter head connecting shaft 3 that connects the driving mechanism 2 and the cutting unit 1.
  • the cutter head connecting shaft 3 includes a connecting body 31 and a connecting head 34.
  • the connecting body 31 has a rotation axis 33, and the connecting head 34 is mounted on the connecting body. 31 axial end.
  • the connection main body 31 is used to connect the driving mechanism 2 of the shaver, and the connection head 34 is used to connect the cutting unit 1.
  • the cutting unit 1 has a cavity 12 into which the connection head 34 extends.
  • the driving mechanism 2 drives the connection main body 31 to rotate, and drives the connection head 34 to rotate to drive the cutting unit 1.
  • a connecting piece 11 is provided in the center of the cutting unit 1, and the connecting piece 11 is connected to the movable blade 14 of the cutting unit 1.
  • a concave cavity 12 is provided in the middle of the connecting piece 11 so as to be connected with the connecting head 34, and then the cutting head When the connecting shaft 3 rotates, the connecting member 11 is driven to rotate, thereby driving the movable blade 14 of the cutting unit 1 to rotate, so as to drive the cutting unit 1.
  • the connecting head 34 includes a rotating shaft 35 and at least two driving blocks 36. One end of the rotating shaft 35 is connected to the connecting body 31.
  • the axis 350 of the rotating shaft 35 and the rotating axis 33 of the connecting body 31 are on the same line, that is, the rotating shaft 35 and the connecting body 31.
  • the at least two driving blocks 36 are disposed on the side of the other end of the rotating shaft 35, the at least two driving blocks 36 are rotationally symmetrically disposed at the corresponding ends of the rotating shaft 35, and each driving block 36 is formed by the rotating shaft
  • the side of the corresponding end of 35 is protruded along the radial direction of the rotation shaft 35, so that when the connection head 34 is inserted into the cavity 12 of the cutting unit 1, when the rotation shaft 35 rotates, each driving block 36 can contact the side wall of the cavity 12 to It plays a good role in centering, and can allow a large gap to allow the connection head 34 to cooperate with the cavity 12 of the cutting unit 1, reducing the accuracy requirements of the fit.
  • the concave cavity 12 of the cutting unit 1 has a groove 121 into which each driving block 36 is inserted so as to be connected to the connection head 34, and each driving block 36 is inserted into a corresponding groove 121 of the concave cavity 12 for convenient connection.
  • the cutter head connecting shaft 3 provided by the present invention provides at least two driving blocks 36 at the end of the rotating shaft 35 in a rotationally symmetrical manner to form a connecting head 34, and each driving block 36 is formed by the rotating shaft 35.
  • the side of the corresponding end is protruding, so that the side of each driving block 36 can contact the side wall of the cavity 12 of the cutting unit 1 to drive the cutting unit 1, that is, a larger gap can be allowed to connect the head 34
  • Cooperating with the cavity 12 of the cutting unit 1 reduces the accuracy requirements of the fit, and can increase the distance between the contact point between the side of the driving block 36 and the side wall of the cavity 12 and the axis 350 of the rotating shaft 35. It is possible to increase the torque, reduce the loss, and increase the driving force for driving the cutting unit 1.
  • the razor provided by the present invention has the beneficial effect that, compared with the prior art, the razor of the present invention uses the above-mentioned blade head connecting shaft 3, which can increase the driving torque, reduce the loss, and improve the driving of the cutting unit 1. Driving force to improve shaving effect.
  • the connecting head 34 includes three driving blocks 36, and the three driving blocks 36 are rotationally symmetrical.
  • the three driving blocks 36 and the sidewall of the cavity 12 form three positions of rotational symmetry.
  • the contact can play a good role in centering, and can allow a large gap to make the connection head 34 cooperate with the cavity 12 of the cutting unit 1, reducing the accuracy requirements of the fit.
  • the cavity 12 of the cutting unit 1 has three grooves 121.
  • the three grooves 121 are rotationally symmetrically arranged, and the three grooves 121 cooperate to form a Y-shape.
  • two driving blocks, four driving blocks, five driving blocks, or six driving blocks may be provided on the rotating shaft 35 of the connecting head 34.
  • one end of the rotating shaft 35 away from the connection body 31 is referred to as the other end of the rotating shaft 35.
  • the end surface 351 of the other end of the rotating shaft 35 is spherical, and when the connecting head 34 is inserted into the cutting In the cavity 12 of the unit 1, the other end of the rotating shaft 35 is inserted into the cavity 12 of the cutting unit 1, and the end surface 351 of the other end of the rotating shaft 35 can abut the bottom surface of the cavity 12, thereby lifting the cutting unit 1;
  • the end surface 351 of the other end of the rotating shaft 35 is provided in a spherical shape, which can make the cutting unit 1 float better, so as to improve the shaving experience.
  • the spherical center 3510 of the spherical surface where the end surface 351 at the other end of the rotating shaft 35 is located is located on the axis of the rotating shaft 35. 350 on.
  • the spherical center 3510 of the spherical surface where the end surface 351 of the other end of the rotating shaft 35 is located is located on the axis 350 of the rotating shaft 35, it can play a good centripetal centering effect during rotation, so that the rotating shaft 35 rotates more smoothly for better driving.
  • each driving block 36 away from the connecting body 31 and the other end of the rotating shaft 35 The end surface 351 has a smooth transition, so that when the cutting unit 1 floats, the friction between the driving block 36 and the cutting unit 1 can be reduced to better drive the cutting unit 1.
  • an end surface 361 of one end of each driving block 36 away from the connecting body 31 is spherical.
  • the end surface 361 of each driving block 36 away from the connection main body 31 is spherical, which can make the cutting unit 1 float more smoothly, and can guide each driving block 36 when it is inserted into the cavity 12 of the cutting unit 1. .
  • an end surface 351 of the other end of the rotating shaft 35 and each driving block 36 are far away from the connecting body 31.
  • the end surface 361 at one end is on the same sphere surface, that is, it can be easily processed and manufactured, and it is convenient for the grinding control accuracy. At the same time, when the cutting unit 1 floats and moves, the resistance is smaller.
  • an end surface 362 of one end of each driving block 36 near the connecting body 31 is spherical, so that during processing, It can be easily demoulded and manufactured, and at the same time, when the cutter head connecting shaft 3 is assembled in the shaver, it can play a guiding role.
  • the radius of curvature R4 of the end surface 362 of each driving block 36 near the end of the connecting body 31 is smaller than the driving block 36 away from the connection.
  • the curvature radius R3 of the end surface of one end of the main body 31 can make the thickness of the driving block 36 relatively small, so as to reduce the volume of the connection head 34 and make the connection head 34 smaller.
  • each driving block 36 has an outer surface 363 away from the rotating shaft 35, and the outer surface 363 is the same as the rotating shaft 35. Arc surface of the axis. The radius of curvature R2 of the outer surface 363 is larger than the radius R1 of the rotating shaft 35.
  • each driving block 36 is set to be a circular arc surface, and the outer surface 363 is coaxial with the rotating shaft 35, which can facilitate processing and manufacturing;
  • the masses on both sides of the block 36 are more balanced, and because the three driving blocks 36 are rotationally symmetrically disposed on the rotating shaft 35, the center of gravity of the connecting head 34 can be located on the axis 350 of the rotating shaft 35, so that the cutter head connecting shaft 3 can Smoother rotation, reduced vibration and noise.
  • each driving block 36 has two sides adjacent to the side of the rotating shaft 35 A surface 364, the two side surfaces 364 are disposed along the axial direction of the rotating shaft 35, and the two side surfaces 364 are disposed in parallel.
  • This structure is convenient for processing and manufacturing, and can make the masses on both sides of each driving block 36 more balanced.
  • each driving block 36 is rotated by the rotation shaft 35.
  • One side surface 364 of the driving block 36 can better contact the side wall of the cavity 12 of the cutting unit 1, so that the positions of the contact points of the three driving blocks 36 and the side wall of the cavity 12 can be good with respect to the axis 350 of the rotation shaft 35.
  • the rotation is symmetrical, and when the cutting head 1 is driven by the connection head 34, it is more stable, the vibration is smaller, and the noise is reduced.
  • FIG. 3 to FIG. 6, FIG. 8, and FIG. 9 As a specific embodiment of the cutter head connecting shaft 3 provided by the present invention, two adjacent driving blocks 36 are spaced apart, and the connecting head can be connected.
  • the volume of 34 is made smaller, and the weight of the connection head 34 is reduced, so that the connection main body 31 drives the connection head 34 to rotate more smoothly; in addition, this structure can change the side wall of each groove 121 of the cavity 12 of the cutting unit 1 The strength is made greater.
  • the end of the rotating shaft 35 is provided with three driving blocks 36, each of the driving blocks 36
  • the thickness is larger than the radius R1 of the rotating shaft 35 to ensure that each driving block 36 has good strength.
  • the thickness of the driving block 36 refers to the distance between the two side surfaces 364 of the driving block 36 in a direction perpendicular to the axial direction of the rotating shaft 35 and the radial direction of the rotating shaft 35.
  • the edge 365 of each driving block 36 away from the rotating shaft 35 is provided with rounded corners. So that the two end surfaces of the driving block 36 along the axial direction of the rotating shaft 35 and the two side surfaces 364 of the driving block 36 adjacent to the rotating shaft 35 and the outer surface 363 of the driving block 36 smoothly transition, so that When 36 is inserted into the cavity 12 of the cutting unit 1, the guide can be better performed. At the same time, when the cutting unit 1 is floating, the friction between the driving blocks 36 and the sidewall of the cavity 12 of the cutting unit 1 can be reduced. At the same time reduce vibration. In addition, the structure can be easily demoulded and manufactured during processing.
  • edges 366 on both sides of one end of each driving block 36 away from the connecting body 31 are also provided with rounded corners, so that each side surface 364 of the driving block 36 and an end surface 361 of one end of the driving block 36 away from the connecting body 31 can be provided. Smooth the transition, reduce the friction between the side walls of the cavity 12 of the cutting unit 1, and guide when the driving block 36 is inserted into the cavity 12 of the cutting unit 1.
  • the structure also makes a smooth transition between the outer surface 363 of the driving block 36 and the end surface 361 of the driving block 36 at an end far from the connection body 31.
  • each driving block 36 near the end of the connecting body 31 is rounded, so that each side surface 364 of the driving block 36 and the end surface 362 of the driving block 36 near the end of the connecting body 31 can smoothly transition. It is convenient for processing and manufacturing. At the same time, the structure also enables a smooth transition between the outer surface 363 of the driving block 36 and the end surface 362 of the driving block 36 near one end of the connecting body 31.
  • edge of the other end of the rotating shaft 35 is provided with a rounded corner at a portion 352 between two adjacent driving blocks 36 to facilitate processing. At the same time, the other end of the rotating shaft 35 and the side wall of the cavity 12 of the cutting unit 1 are reduced. Friction.
  • the diameter of the connecting body 31 is larger than the diameter of the rotating shaft 35, and a receiving cavity 311 is defined in the connecting body 31. .
  • Setting the diameter of the connecting body 31 larger than the diameter of the rotating shaft 35 can ensure good strength of the connecting body 31 and facilitate connection with the driving mechanism 2 of the shaver.
  • an accommodating cavity 311 is provided in the connecting body 31 for convenient accommodation.
  • the spring 25 can float and move along the axial direction of the connecting body 31 when the connecting body 31 is mounted on the shaver driving mechanism 2, so that the cutting unit 1 can float and move well.
  • an opening 353 is opened at the center of the rotating shaft 35 near one end of the connecting body 31, and the opening 353 is communicated with the accommodation cavity 311 to facilitate processing and manufacturing, and at the same time, reduce the quality of the connecting shaft 3 of the cutter head and facilitate shaving.
  • the cutter driving mechanism 2 drives the cutter head connecting shaft 3 to rotate.
  • a conical transition section 314 is provided at a connection portion between the connecting body 31 and the rotating shaft 35.
  • the tapered transition section 314 is provided to facilitate the connection between the main body 31 and the rotating shaft 35, and at the same time facilitate the production.
  • a plurality of connecting rods 32 are protruded from a side of an end of the connecting main body 31 away from the connecting head 34.
  • the connecting rod 32 is provided at the corresponding end portion of the connecting body 31 in a rotationally symmetrical manner.
  • a connecting rod 32 is provided on the connecting body 31 to facilitate connection with the driving mechanism 2 of the shaver.
  • a plurality of connecting rods 32 are provided at the corresponding end portions of the connecting body 31 in a rotationally symmetrical manner, so that the circumferential force of the connecting body 31 can be uniformly distributed, and the connecting body 31 can be rotated more smoothly.
  • the connecting body 31 is provided with four connecting rods 32, and the four connecting rods 32 are evenly arranged in the circumferential direction of the connecting body 31.
  • three connecting rods 32 may be provided.
  • a slot may be provided on a side wall of the receiving cavity 311 of the connection main body 31 so as to be snap-connected to a connector having a fork-lobe structure, and then connected to the driving mechanism 2.
  • the driving mechanism 2 is provided with a gear seat 20, and the connection body 31 of the cutter head connecting shaft 3 is connected to the gear seat 20.
  • the gear base 20 is provided to be conveniently connected to the cutter head connecting shaft 3, and at the same time, it is convenient to drive the cutter head connecting shaft 3 and increase the driving torque.
  • a connecting sleeve 21 is protruded in the middle of the gear base 20, and the connecting body 31 of the cutter head connecting shaft 3 is inserted into the connecting sleeve 21, and the receiving sleeve 21 is provided with an accommodation hole 211 at a position corresponding to each connecting rod 32.
  • each receiving hole 211 is arched along the radial direction of the gear base 20 so that the connecting rod 32 can swing in the receiving hole 211, and the connecting rod 32 can be centered and positioned, and the connecting body 31 can be
  • the gear base 20 swings at a small angle and floats axially along the gear base 20.
  • a spring 25 can be installed in the accommodating cavity 311 of the connecting body 31, and one end of the spring 25 abuts against the gear base 20, so that the connecting body 31 can be pushed up along the axial spring 25 of the gear base 20, so that the cutter head
  • the connection seat can push the cutting unit 1 by the spring 25.
  • a positioning post 22 is provided in the connecting sleeve 21, and a spring 25 is sleeved on the positioning post 22 to facilitate positioning of the spring 25.
  • each connecting rod 32 is arcuate, so that after the connecting body 31 is installed on the gear base 20, it can be positioned better in the center.
  • each connecting rod 32 is inserted into the connecting sleeve 21 of the gear holder 20, it can play a guiding role and also be convenient. manufacture.
  • connection sleeve 21 of the gear base 20 is provided with a notch 212 at a corresponding position between two adjacent accommodation holes 211, so that the connection sleeve 21 is divided into a plurality of petals, and the connection body 31 is inserted into the connection sleeve 21 At this time, each flap can be opened to facilitate the insertion of the connection body 31 into the connection sleeve 21.
  • a side of each connecting rod 32 away from the connecting head 34 and a side of the connecting body 31 away from the connecting head 34 One end is flat to facilitate processing, and the length of the cutter head connecting shaft 3 can be made relatively small, which is convenient to use.
  • a chamfer is provided on an end 312 of the side wall of the accommodating cavity 311 away from the connection head 34 to facilitate processing and manufacture, and at the same time facilitate the insertion of the spring 25 into the accommodating cavity 311.
  • a convex ring 313 is protruded outward from a periphery of an end of the connection body 31 away from the connection head 34 in a radial direction of the connection body 31 to increase the strength of the connection body 31.
  • the cavity 12 on the connecting member 11 of the cutting unit 1 is Y-shaped, so that the side wall of the cavity 12 forms three blocking flaps 13, and the three blocking flaps 13 surround the connecting member.
  • the axial rotation of 11 is symmetrically arranged, and each of the flaps 13 is curved on the surface near the inside of the cavity 12, so as to reduce the friction when contacting the driving block 36 connecting the head 34, and at the same time facilitate the insertion of the driving block 36 into the In the cavity 12.
  • each blocking flap 13 in the depth direction of the cavity 12 is smaller than the thickness of the other end thereof, so that when the driving block 36 is inserted into the cavity 12, it can play a guiding role.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

一种剃须刀及刀头连接轴(3)，该刀头连接轴(3)包括连接主体(31)和连接头部(34)，连接主体(31)具有转动轴线(33)，连接头部(34)包括一端与连接主体(31)相连的转轴(35)和呈旋转对称设置于转轴(35)另一端的端部的至少两个驱动块(36)，所述驱动块(36)由转轴(35)相应端部的侧面沿转轴(35)的径向凸出设置；至少两个所述驱动块(36)形成连接头部(34)，从而增大驱动块(36)的侧面与切削单元(1)之凹腔(12)侧壁的接触点与转轴(35)的轴线(350)之间的距离，以使驱动时，可以增加力矩，提高驱动切削单元(1)的驱动力。

Description

剃须刀及刀头连接轴 技术领域
本发明属于剃须刀领域，更具体地说，是涉及一种刀头连接轴及使用该刀头连接轴的剃须刀。
 背景技术
剃须刀的切削单元（一般也称为刀头）一般安装成可浮动结构，以便在切削时可以更好的贴合皮肤。切削单元一般是通过刀头连接轴与剃须刀的驱动机构相连，通过驱动机构驱动刀头连接轴转动，进而带动切削单元中的动刀片转动。当前刀头连接轴一般是将其头部及设置为大致呈三角形形状，以便连接轴头部可以允许有较大的间隙与切削单元的凹腔配合，减小配合的精度要求。然而受限于切削单元的体积，这种刀头连接轴的头部往往制作较小，在传动时，头部与切削单元接触点的距离刀头连接轴的轴线较近，在驱动时，力矩较小，而导致切削单元的驱动力较小，影响切削效果。
 技术问题
本发明的目的在于提供一种剃须刀及刀头连接轴，以解决现有技术中存在的剃须刀的刀头连接轴的驱动力矩较小的问题。
 技术解决方案
为实现上述目的，本发明采用的技术方案是：提供一种刀头连接轴，包括用于连接剃须刀的驱动机构的连接主体和用于连接切削单元的连接头部，所述连接主体具有转动轴线，所述连接头部安装于所述连接主体轴向的一端，所述连接头部包括一端与所述连接主体相连的转轴和呈旋转对称设置于所述转轴另一端之端部的至少两个驱动块，所述转轴的轴线与所述转动轴线处于同一直线上，且各所述驱动块由所述转轴相应端部的侧面沿所述转轴的径向凸出设置。
进一步地，所述转轴另一端之端面呈球面状，所述转轴另一端之端面所处球面的球心位于所述转轴的轴线上，各所述驱动块远离所述连接主体一端之端面与所述转轴另一端之端面呈平滑过渡。
进一步地，各所述驱动块远离所述连接主体一端之端面呈球面状，且所述转轴另一端之端面与各所述驱动块远离所述连接主体一端之端面处于同一球体表面上。
进一步地，各所述驱动块靠近所述连接主体一端之端面呈球面状。
进一步地，各所述驱动块靠近所述连接主体一端之端面的曲率半径小于所述驱动块远离所述连接主体一端之端面的曲率半径。
进一步地，各所述驱动块具有远离所述转轴的外表面，所述外表面呈与所述转轴同轴的圆弧面。
进一步地，各所述驱动块具有与所述转轴之侧面相邻的两个侧表面，该两个侧表面平行设置。
进一步地，相邻两个所述驱动块间隔设置。
进一步地，各所述驱动块远离所述转轴一侧的边缘设有圆角，各所述驱动块远离所述连接主体一端的两侧边缘设有圆角，各所述驱动块靠近所述连接主体一端的两侧边缘设有圆角。
进一步地，所述连接主体的直径大于所述转轴的直径，且所述连接主体中开设有容置腔。
进一步地，所述连接主体与所述转轴的连接处设有锥形过渡段。
进一步地，所述连接主体远离所述连接头部的一端的侧面凸出设有若干连接杆，若干所述连接杆呈旋转对称设于所述连接主体的对应端部。
进一步地，各所述连接杆的横截面呈弓形。
进一步地，各所述连接杆自由端上远离所述连接头部的一侧边缘设有倒角。
本发明的另一目的在于提供剃须刀，包括切削单元、驱动所述切削单元的驱动机构和连接所述驱动机构与所述切削单元的刀头连接轴，所述刀头连接轴为如上所述的刀头连接轴，所述切削单元具有供所述连接头部伸入的凹腔，所述凹腔具有供各所述驱动块伸入的凹槽。
 有益效果
本发明提供的刀头连接轴的有益效果在于：与现有技术相比，本发明在转轴的端部旋转对称设置至少两个驱动块，以形成连接头部，且各驱动块由转轴的相应端部的侧面凸出设置，从而可以通过各驱动块的侧面与切削单元的凹腔侧壁接触，以驱动切削单元，即可以允许有较大的间隙使连接头部与切削单元的凹腔配合，降低配合的精度要求，又可以增大驱动块的侧面与凹腔侧壁的接触点与转轴的轴线之间的距离，进而在驱动时，可以增加力矩，减小损失，提高驱动切削单元的驱动力。
本发明的提供的剃须刀的有益效果在于：与现有技术相比，本发明的剃须刀使用了上述刀头连接轴，可以增大驱动力矩，减小损失，提高驱动切削单元的驱动力，进而提高剃须效果。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例或现有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发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的剃须刀的部分结构的示意图；
图2为图1的剃须刀的部分结构剖视结构示意图；
图3为本发明实施例提供的刀头连接轴的立体结构示意图一；
图4为本发明实施例提供的刀头连接轴的立体结构示意图二；
图5为图4所示的刀头连接轴的俯视结构示意图；
图6为沿图5中A-A线的剖视结构图；
图7为本发明实施例提供的刀头连接轴与齿轮座连接时的结构示意图；
图8为本发明实施例提供的刀头连接轴将切削单元与齿轮座连接时的剖视结构示意图；
图9为本发明实施例提供的刀头连接轴的连接头部与切削单元连接时的结构示意图。
其中，图中各附图主要标记：
1-切削单元；11-连接件；12-凹腔；121-凹槽；13-挡瓣；14-动刀片；
2-驱动机构；20-齿轮座；21-连接套；211-容置孔；212-缺口；22-定位柱；25-弹簧；
3-刀头连接轴；31-连接主体；311-容置腔；313-凸环；314-锥形过渡段；32-连接杆；34-连接头部；35-转轴；353-开孔；36-驱动块。
 本发明的实施方式
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者间接在该另一个元件上。当一个元件被称为是“连接于”另一个元件，它可以是直接连接到另一个元件或间接连接至该另一个元件上。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。“若干”的含义是一个或一个以上，除非另有明确具体的限定。
在本发明的描述中，需要理解的是，术语“中心”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”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，仅是为了便于描述本发明和简化描述，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发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。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在本发明中的具体含义。
请参阅图1及图2，现对本发明提供的剃须刀进行说明。该剃须刀包括切削单元1、驱动切削单元1的驱动机构2和连接驱动机构2与切削单元1的刀头连接轴3。
请一并参阅图2、图5、图6和图9，所述刀头连接轴3，包括连接主体31和连接头部34，连接主体31具有转动轴线33，连接头部34安装于连接主体31轴向的一端。其中，连接主体31用于连接剃须刀的驱动机构2，而连接头部34用于连接切削单元1，切削单元1具有供连接头部34伸入的凹腔12。从而驱动机构2驱动连接主体31转动，并带动连接头部34转动，以驱动切削单元1。具体地，切削单元1的中心设有连接件11，连接件11与切削单元1的动刀片14相连，连接件11的中部开设有凹腔12，以便与连接头部34相连，进而在刀头连接轴3转动时，带动连接件11转动，进而带动切削单元1的动刀片14转动，以实现驱动切削单元1。
连接头部34包括转轴35和至少两个驱动块36，转轴35的一端与连接主体31相连，转轴35的轴线350与接主体31的转动轴线33处于同一直线上，即转轴35与连接主体31同轴设置；上述的至少两个驱动块36设于转轴35另一端之端部侧面，上述的至少两个驱动块36呈旋转对称设置于转轴35的相应端部，且各驱动块36由转轴35相应端部的侧面沿转轴35的径向凸出设置，从而当连接头部34插入切削单元1的凹腔12中，在转轴35转动时，各驱动块36与凹腔12侧壁接触可以起到良好的对中作用，并且可以允许有较大的间隙使连接头部34与切削单元1的凹腔12配合，降低配合的精度要求。另外，相比于现有技术，在转轴35直径相同的情况下，本发明的刀头连接轴3的各驱动块36与凹腔12侧壁的接触点距离转轴35之轴线350的距离更远，从而在驱动时，驱动力矩更大，更轻松驱动切削单元1。
切削单元1之凹腔12具有供各驱动块36插入的凹槽121，以便与连接头部34相连，并且各驱动块36插入凹腔12的相应凹槽121中，方便连接。
本发明提供的刀头连接轴3，与现有技术相比，本发明在转轴35的端部旋转对称设置至少两个驱动块36，以形成连接头部34，且各驱动块36由转轴35的相应端部的侧面凸出设置，从而可以通过各驱动块36的侧面与切削单元1的凹腔12侧壁接触，以驱动切削单元1，即可以允许有较大的间隙使连接头部34与切削单元1的凹腔12配合，降低配合的精度要求，又可以增大驱动块36的侧面与凹腔12侧壁的接触点与转轴35的轴线350之间的距离，进而在驱动时，可以增加力矩，减小损失，提高驱动切削单元1的驱动力。
本发明的提供的剃须刀的有益效果在于：与现有技术相比，本发明的剃须刀使用了上述刀头连接轴3，可以增大驱动力矩，减小损失，提高驱动切削单元1的驱动力，进而提高剃须效果。
进一步地，请参阅图3至图6和图8，作为本发明提供的刀头连接轴3的一种具体实施方式，连接头部34包括三个驱动块36，三个驱动块36呈旋转对称设置于转轴35的相应端部，则当连接头部34插入切削单元1的凹腔12中，在转轴35转动时，三个驱动块36与凹腔12侧壁形成旋转对称的三个位置的接触，可以起到良好的对中作用，并且可以允许有较大的间隙使连接头部34与切削单元1的凹腔12配合，降低配合的精度要求。相应地，切削单元1之凹腔12具有三个凹槽121，三个凹槽121旋转对称设置，并且三个凹槽121配合形成Y型。
在其它一些实施例中，连接头部34的转轴35上也可以设置两个驱动块、四个驱动块、五个驱动块或六个驱动块等等。
为了方便描述，转轴35远离连接主体31的一端称为转轴35另一端。
进一步地，请参阅图3至图6和图8，作为本发明提供的刀头连接轴3的一种具体实施方式，转轴35另一端之端面351呈球面状，当将连接头部34插入切削单元1的凹腔12中，则转轴35另一端插入切削单元1的凹腔12中，而转轴35另一端的端面351可以抵住凹腔12的底面，从而将切削单元1顶起；而将转轴35另一端之端面351设置呈球面状，可以使切削单元1更好的浮动，以升剃须的体验效果。
进一步地，请参阅图3至图6和图8，作为本发明提供的刀头连接轴3的一种具体实施方式，转轴35另一端之端面351所处球面的球心3510位于转轴35的轴线350上。将转轴35另一端之端面351所处球面的球心3510位于转轴35的轴线350上，则在转动时，可以起到良好向心对中作用，使转轴35转动更平稳，以更好的驱动切削单元1。
进一步地，请参阅图3至图6、图8和图9，作为本发明提供的刀头连接轴3的一种具体实施方式，各驱动块36远离连接主体31一端之端面与转轴35另一端之端面351呈平滑过渡，从而在切削单元1浮动时，可以减小驱动块36与切削单元1之间的摩擦力，以更好的驱动切削单元1。
进一步地，请参阅图3至图6、图8和图9，作为本发明提供的刀头连接轴3的一种具体实施方式，各驱动块36远离连接主体31一端之端面361呈球面状。将各驱动块36远离连接主体31一端之端面361呈球面状，可以使切削单元1更顺畅地浮动，并且在将各驱动块36插入切削单元1的凹腔12中时，可以起到导向作用。
进一步地，请参阅图3至图6、图8和图9，作为本发明提供的刀头连接轴3的一种具体实施方式，转轴35另一端之端面351与各驱动块36远离连接主体31一端之端面361处于同一球体表面上，即可以方便加工制作，便于打磨控制精度，同时可以在切削单元1浮动移动时，阻力更小。
进一步地，请参阅图3至图6，作为本发明提供的刀头连接轴3的一种具体实施方式，各驱动块36靠近连接主体31一端之端面362呈球面状，从而在加工制作时，可以方便进行脱模，便于制作，同时在将该刀头连接轴3组装在剃须刀中时，可以起到导向作用。
进一步地，请参阅图3至图6，作为本发明提供的刀头连接轴3的一种具体实施方式，各驱动块36靠近连接主体31一端之端面362的曲率半径R4小于驱动块36远离连接主体31一端之端面的曲率半径R3，则该结构可以将驱动块36厚度制作相对较小，以减小连接头部34的体积，将连接头部34制作更小。
进一步地，请参阅图3至图6，作为本发明提供的刀头连接轴3的一种具体实施方式，各驱动块36具有远离转轴35的外表面363，该外表面363呈与转轴35同轴的圆弧面。外表面363的曲率半径R2大于转轴35的半径R1，将各驱动块36的外表面363设置呈圆弧面，并且使该外表面363与转轴35同轴，可以方便加工制作；并且可以使驱动块36两侧的质量更为均衡，而由于三个驱动块36旋转对称设置于转轴35上，则可以使连接头部34的重心处于转轴35的轴线350上，以便该刀头连接轴3可以更为平稳转动，减小振动与噪音。
进一步地，请参阅图3至图6、图8和图9，作为本发明提供的刀头连接轴3的一种具体实施方式，各驱动块36具有与转轴35之侧面相邻的两个侧表面364，该两个侧表面364是沿转轴35的轴向设置，该两个侧表面364平行设置。该结构方便加工制作，并且可以使各驱动块36两侧的质量更为均衡；同时在各驱动块36插入切削单元1的凹腔12中后，各驱动块36在转轴35带动下转动，各驱动块36的一个侧表面364可以更好的与切削单元1之凹腔12的侧壁接触，使三个驱动块36与凹腔12的侧壁接触点的位置关于转轴35的轴线350能良好的旋转对称，而在连接头部34驱动切削单元1时，更为平稳，振动更小，并降低噪音。
进一步地，请参阅图3至图6、图8和图9，作为本发明提供的刀头连接轴3的一种具体实施方式，相邻两个驱动块36间隔设置，而可以将连接头部34的体积制作较小，并减轻连接头部34的重量，以便连接主体31带动连接头部34更平稳转动；另外，该结构可以将切削单元1之凹腔12的各凹槽121的侧壁强度制作更大。
进一步地，请参阅图3至图6、图8和图9，作为本发明提供的刀头连接轴3的一种具体实施方式，转轴35的端部设有三个驱动块36，各驱动块36的厚度大于转轴35的半径R1，以保证各驱动块36具有良好的强度。驱动块36的厚度是指在垂直于转轴35的轴向同时转轴35径向的方向上，驱动块36两个侧表面364之间的距离。
进一步地，请参阅图3至图6、图8和图9，作为本发明提供的刀头连接轴3的一种具体实施方式，各驱动块36远离转轴35一侧的边缘365设有圆角，以使驱动块36沿转轴35的轴向的两个端面、以及驱动块36上与转轴35相邻的两个侧表面364与该驱动块36的外表面363平滑过渡，从而在各驱动块36插入切削单元1的凹腔12中时，可以更好的进行导向，同时切削单元1在浮动移动时，可以减小各驱动块36与切削单元1的凹腔12之侧壁的摩擦力，同时减小振动。另外该结构在加工制作时，可以方便脱模，便于制造。
进一步地，各驱动块36远离连接主体31一端的两侧的边缘366也设有圆角，则可以使驱动块36的各侧表面364与该驱动块36远离连接主体31一端之端面361之间平滑过渡，减小对切削单元1之凹腔12的侧壁间的摩擦力，并在驱动块36插入切削单元1之凹腔12中时，进行导向。同时该结构也使驱动块36的外表面363与该驱动块36远离连接主体31一端之端面361之间平滑过渡。
进一步地，各驱动块36靠近连接主体31一端的两侧边缘367设有圆角，则可以使驱动块36的各侧表面364与该驱动块36靠近连接主体31一端之端面362之间平滑过渡，方便加工制作，同时该结构也使驱动块36的外表面363与该驱动块36靠近连接主体31一端之端面362之间平滑过渡。
进一步地，转轴35另一端的边缘于相邻两个驱动块36之间的部分352设有圆角，以方便加工制作，同时减小转轴35另一端与切削单元1之凹腔12侧壁的摩擦力。
进一步地，请参阅图3至图8，作为本发明提供的刀头连接轴3的一种具体实施方式，连接主体31的直径大于转轴35的直径，且连接主体31中开设有容置腔311。将连接主体31的直径设置大于转轴35的直径，可以保证连接主体31良好的强度，方便与剃须刀的驱动机构2相连，另外，在连接主体31中开设容置腔311，可以方便容置弹簧25，进而在连接主体31安装在剃须刀的驱动机构2上时，可以沿该连接主体31的轴向浮动移动，进而使切削单元1可以良好地浮动移动。
进一步地，转轴35的中心靠近连接主体31的一端开设有开孔353，该开孔353与容置腔311相连通，以方便加工制作，同时降低该刀头连接轴3的质量，方便剃须刀的驱动机构2驱动刀头连接轴3转动。
进一步地，请参阅图3至图8，作为本发明提供的刀头连接轴3的一种具体实施方式，连接主体31与转轴35的连接处设有锥形过渡段314。设置锥形过渡段314，可以方便连接主体31与转轴35的连接，同时方便制作。
进一步地，请参阅图3至图8，作为本发明提供的刀头连接轴3的一种具体实施方式，连接主体31远离连接头部34的一端的侧面凸出设有若干连接杆32，若干连接杆32呈旋转对称设于连接主体31的对应端部。在连接主体31上设置连接杆32，以方便与剃须刀的驱动机构2相连。将若干连接杆32呈旋转对称设于连接主体31的对应端部，可以使连接主体31的周向受力均匀，进而使连接主体31更平稳转动。在本实施例中，连接主体31上设有四根连接杆32，四根连接杆32均匀设于连接主体31的周向。在其它一些实施例中，连接杆32也可以设置三根、五根等等。还有一些实施例中，可以在连接主体31的容置腔311的侧壁上开设开槽，以便与具有叉瓣结构的连接头卡接相连，进而与驱动机构2相连。
进一步地，请参阅图2、图7和图8，本发明提供的一种剃须刀中，驱动机构2上设置有齿轮座20，刀头连接轴3的连接主体31与齿轮座20相连。设置齿轮座20，以方便与刀头连接轴3相连，同时可以方便驱动刀头连接轴3，提高驱动力矩。
进一步地，齿轮座20的中部凸设有连接套21，刀头连接轴3的连接主体31插入连接套21中，而连接套21上对应于各连接杆32的位置开设有容置孔211，以便齿轮座20转动时，推动连接杆32带动连接主体31转动。
进一步地，沿齿轮座20的径向，各容置孔211呈拱形，以便连接杆32可以在容置孔211中摆动，并可以对连接杆32进行对中定位，并使连接主体31可以在齿轮座20上小角度摆动与沿齿轮座20轴向浮动。
进一步地，连接主体31的容置腔311中可以安装弹簧25，而弹簧25的一端抵在齿轮座20上，从而可以沿齿轮座20的轴向弹簧25推顶连接主体31，进而使刀头连接座可以弹簧25推顶切削单元1。进一步地，连接套21中设有定位柱22，弹簧25套在定位柱22上，以方便对弹簧25进行定位。
进一步地，各连接杆32的横截面呈弓形，以便在连接主体31安装在齿轮座20上后，可以更好的对中定位。
进一步地，各连接杆32自由端上远离连接头部34的一侧边缘321设有倒角，以便在连接主体31插入齿轮座20的连接套21中时，可以起到导向作用，同时也方便加工制作。
进一步地，齿轮座20的连接套21上、于相邻两个容置孔211之间对应的位置开设有缺口212，从而将连接套21分成多个瓣，在连接主体31插入连接套21中时，各瓣可以张开，以方便连接主体31插入连接套21中。
进一步地，请参阅图4和图6，作为本发明提供的刀头连接轴3的一种具体实施方式，各连接杆32远离连接头部34的一面与连接主体31上远离连接头部34的一端持平，以方便加工制作，并且可以将刀头连接轴3长度制作相对较小，方便使用。
进一步地，容置腔311的侧壁上远离连接头部34的一端312设有倒角，以方便加工制作，同时便于弹簧25插入容置腔311中。
进一步地，连接主体31远离连接头部34的一端的周边沿该连接主体31的径向向外凸设有凸环313，以增加连接主体31的强度。
进一步地，请参阅图8和图9，切削单元1的连接件11上的凹腔12成Y型，以将凹腔12的侧壁形成三个挡瓣13，三个挡瓣13绕连接件11的轴向旋转对称设置，各挡瓣13于靠近凹腔12内侧的表面呈曲面状，以在与连接头部34的驱动块36接触时，减小摩擦力，同时便于驱动块36插入该凹腔12中。
再进一步地，，各挡瓣13一端沿凹腔12的深度方向的厚度小于其另一端的厚度，以便在驱动块36插入凹腔12中时，可以起到导向作用。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (15)

  1. 刀头连接轴，包括用于连接剃须刀的驱动机构的连接主体和用于连接切削单元的连接头部，所述连接主体具有转动轴线，所述连接头部安装于所述连接主体轴向的一端，其特征在于：所述连接头部包括一端与所述连接主体相连的转轴和呈旋转对称设置于所述转轴另一端之端部的至少两个驱动块，所述转轴的轴线与所述转动轴线处于同一直线上，且各所述驱动块由所述转轴相应端部的侧面沿所述转轴的径向凸出设置。
  2. 如权利要求1所述的刀头连接轴，其特征在于：所述转轴另一端之端面呈球面状，所述转轴另一端之端面所处球面的球心位于所述转轴的轴线上，各所述驱动块远离所述连接主体一端之端面与所述转轴另一端之端面呈平滑过渡。
  3. 如权利要求2所述的刀头连接轴，其特征在于：各所述驱动块远离所述连接主体一端之端面呈球面状，且所述转轴另一端之端面与各所述驱动块远离所述连接主体一端之端面处于同一球体表面上。
  4. 如权利要求3所述的刀头连接轴，其特征在于：各所述驱动块靠近所述连接主体一端之端面呈球面状。
  5. 如权利要求4所述的刀头连接轴，其特征在于：各所述驱动块靠近所述连接主体一端之端面的曲率半径小于所述驱动块远离所述连接主体一端之端面的曲率半径。
  6. 如权利要求1-5任一项所述的刀头连接轴，其特征在于：各所述驱动块具有远离所述转轴的外表面，所述外表面呈与所述转轴同轴的圆弧面。
  7. 如权利要求1-5任一项所述的刀头连接轴，其特征在于：各所述驱动块具有与所述转轴之侧面相邻的两个侧表面，该两个侧表面平行设置。
  8. 如权利要求7所述的刀头连接轴，其特征在于：相邻两个所述驱动块间隔设置。
  9. 如权利要求1-5任一项所述的刀头连接轴，其特征在于：各所述驱动块远离所述转轴一侧的边缘设有圆角，各所述驱动块远离所述连接主体一端的两侧边缘设有圆角，各所述驱动块靠近所述连接主体一端的两侧边缘设有圆角。
  10. 如权利要求1-5任一项所述的刀头连接轴，其特征在于：所述连接主体的直径大于所述转轴的直径，且所述连接主体中开设有容置腔。
  11. 如权利要求10所述的刀头连接轴，其特征在于：所述连接主体与所述转轴的连接处设有锥形过渡段。
  12. 如权利要求11所述的刀头连接轴，其特征在于：所述连接主体远离所述连接头部的一端的侧面凸出设有若干连接杆，若干所述连接杆呈旋转对称设于所述连接主体的对应端部。
  13. 如权利要求12所述的刀头连接轴，其特征在于：各所述连接杆的横截面呈弓形。
  14. 如权利要求12所述的刀头连接轴，其特征在于：各所述连接杆自由端上远离所述连接头部的一侧边缘设有倒角。
  15. 剃须刀，包括切削单元、驱动所述切削单元的驱动机构和连接所述驱动机构与所述切削单元的刀头连接轴，其特征在于：所述刀头连接轴为如权利要求1-14任一项所述的刀头连接轴，所述切削单元具有供所述连接头部伸入的凹腔，所述凹腔具有供各所述驱动块伸入的凹槽。
PCT/CN2018/097048 2018-07-25 2018-07-25 剃须刀及刀头连接轴 WO2020019197A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/097048 WO2020019197A1 (zh) 2018-07-25 2018-07-25 剃须刀及刀头连接轴

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/097048 WO2020019197A1 (zh) 2018-07-25 2018-07-25 剃须刀及刀头连接轴

Publications (1)

Publication Number Publication Date
WO2020019197A1 true WO2020019197A1 (zh) 2020-01-30

Family

ID=69180331

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/097048 WO2020019197A1 (zh) 2018-07-25 2018-07-25 剃须刀及刀头连接轴

Country Status (1)

Country Link
WO (1) WO2020019197A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1089897A (zh) * 1993-05-21 1994-07-27 杨学尧 往复式手力剃须器
CN1738700A (zh) * 2003-01-20 2006-02-22 皇家飞利浦电子股份有限公司 剃须装置
CN101362341A (zh) * 2007-08-06 2009-02-11 曹伟明 旋转式剃须刀的内切刀浮动传动装置
US20110030220A1 (en) * 2009-08-06 2011-02-10 Izumi Products Company Rotary electric shaver
CN207415432U (zh) * 2017-07-25 2018-05-29 舒可士（深圳）科技有限公司 剃须刀五边形转轴配合结构及剃须刀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1089897A (zh) * 1993-05-21 1994-07-27 杨学尧 往复式手力剃须器
CN1738700A (zh) * 2003-01-20 2006-02-22 皇家飞利浦电子股份有限公司 剃须装置
CN101362341A (zh) * 2007-08-06 2009-02-11 曹伟明 旋转式剃须刀的内切刀浮动传动装置
US20110030220A1 (en) * 2009-08-06 2011-02-10 Izumi Products Company Rotary electric shaver
CN207415432U (zh) * 2017-07-25 2018-05-29 舒可士（深圳）科技有限公司 剃须刀五边形转轴配合结构及剃须刀

Similar Documents

Publication Publication Date Title
KR101104979B1 (ko) 드릴 공구용 드릴 몸체
EP3471930B1 (en) Shaving apparatus with detachable cutting unit
WO2010075773A1 (zh) 一种免磨钻头的制备方法及钻头
CN109414770A (zh) 用于前后倒角用旋转铣刀的星形切削刀片
WO2020019197A1 (zh) 剃须刀及刀头连接轴
CN105108795B (zh) 一种刀轮
JP5481514B2 (ja) ドリル工具用ドリル本体
CN208645399U (zh) 剃须刀及刀头连接轴
CN110757515A (zh) 剃须刀及刀头连接轴
JP2018015861A (ja) 刃先交換式ドリルのドリル本体、及び刃先交換式ドリル
TWM612717U (zh) 切管器結構
US2394890A (en) Universal joint
CN212042677U (zh) 转动连接结构及加工装置
CN109226833A (zh) 钻头
CN114469220A (zh) 腔镜吻合器的摆头方法及腔镜吻合器
CN220600070U (zh) 一种中节风叶、贯流风叶和空调器
CN214079430U (zh) 分体式钻具的定位连接结构
WO2023206943A1 (zh) 一种浮动轮组、变速装置及风力发电机组
CN206309971U (zh) 一种转轴定位机构及蝶阀
CN216519272U (zh) 一种球形万向联轴器
CN107971507A (zh) 一种车刀杆
CN214870746U (zh) 毛发修剪器
CN220218262U (zh) 一种螺丝驱动工具
CN218348047U (zh) 一种圆环结构的阀门
CN216430318U (zh) 一种精确定位的排钻钻杆传动机构

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18927256

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC - (EPO FORM 1205A) - 08.06.2021

122 Ep: pct application non-entry in european phase

Ref document number: 18927256

Country of ref document: EP

Kind code of ref document: A1