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WO2021008309A1 - 一种改良的冲击结构 - Google Patents

一种改良的冲击结构 Download PDF

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Publication number
WO2021008309A1
WO2021008309A1 PCT/CN2020/097459 CN2020097459W WO2021008309A1 WO 2021008309 A1 WO2021008309 A1 WO 2021008309A1 CN 2020097459 W CN2020097459 W CN 2020097459W WO 2021008309 A1 WO2021008309 A1 WO 2021008309A1
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WO
WIPO (PCT)
Prior art keywords
impact
hole
disk
drive
disc
Prior art date
Application number
PCT/CN2020/097459
Other languages
English (en)
French (fr)
Inventor
李双群
任溪仁
李相葵
Original Assignee
任溪仁
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 任溪仁 filed Critical 任溪仁
Publication of WO2021008309A1 publication Critical patent/WO2021008309A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
    • F16D13/54—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member
    • F16D13/56—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B25B21/026—Impact clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D11/14—Clutches in which the members have interengaging parts with clutching members movable only axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
    • F16D13/71—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members in which the clutching pressure is produced by springs only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
    • B25B23/1475—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers for impact wrenches or screwdrivers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D5/00—Impulse couplings, i.e. couplings that alternately accelerate and decelerate the driven member

Definitions

  • the invention relates to the technical field of electric screwdrivers, in particular to an improved impact structure.
  • Electric screwdriver is a commonly used hand-held tool with a wide range of types. As shown in Fig. 8, there is an electric screwdriver with an impact structure in the prior art.
  • the main components of the impact structure include a transmission shaft 101, an impact plate 102, an output shaft 103 and an impact spring 104. It is a "V"-shaped chute 1012.
  • On both sides of the inner cavity wall of the impact disk 102 there are symmetrically provided protrusions that cooperate with the chute 1012.
  • One end of the output shaft 103 is provided with a first impact block 1031 along the circumferential direction.
  • the upper end surface of the disk 102 is provided with a second impact block 1021 along the circumferential direction.
  • the impact disk 102 and the transmission shaft 101 are connected by steel balls 105.
  • the steel balls 105 drive the impact disk 102 to rotate.
  • the transmission shaft 101 continues to rotate, and the impact disk 102 moves down along the "V"-shaped chute 1012 of the transmission shaft 101.
  • the impact disk 102 is on the impact spring 104 Reset immediately under the action of, and carry out the next impact.
  • the protruding part is provided on the inner cavity wall of the impact disk 102 and the chute 1012 is opened on both sides of the middle of the transmission shaft 101, which makes the manufacturing process complicated and the production cost is high; moreover, slanting is provided on both sides of the transmission shaft 101 After the groove 1012, the strength of the transmission shaft 101 will be reduced, and the service life of the transmission shaft 101 will be affected.
  • the main purpose of the present invention is to overcome the shortcomings in the prior art and provide an improved impact structure.
  • An improved impact structure includes a drive shaft, an impact disk, a drive disk, an output shaft and an impact spring.
  • the drive disk is arranged in a cylindrical shape, and its lower surface is provided with two symmetrical first inclined surfaces.
  • the inclined surface is arranged in a "V" shape, a second inclined surface matching the first inclined surface is arranged in the central hole of the impact disk, the two second inclined surfaces are arranged symmetrically, and the cross section of the second inclined surface is set to "V" shape
  • the output end of the transmission shaft is movably connected with the output shaft after passing through the impact disk
  • the drive disk is fixedly installed on the transmission shaft
  • the drive disk is arranged on the impact disk
  • the first inclined surface is in contact with the second inclined surface
  • one end of the output shaft close to the impact disk is provided with a first impact block along the circumferential direction
  • the upper end surface of the impact disk is provided along the circumferential direction
  • the angles between the two first inclined planes and the horizontal plane are acute.
  • angles between the planes on which the two second inclined surfaces are located and the horizontal plane are acute angles.
  • the transmission shaft is provided with a first key groove
  • the inner wall of the drive disc is provided with two opposite second key grooves
  • a steel ball is arranged between the first key groove and the second key groove, and the drive disc passes through the steel ball ,
  • the first keyway and the second keyway are connected with the transmission shaft.
  • the impact disk is provided with a through hole for the transmission shaft to pass through, the upper half of the through hole is provided with a middle hole coaxial with the through hole, the diameter of the middle hole is larger than the diameter of the through hole ,
  • the two second inclined surfaces are symmetrically arranged in the annular groove formed by the middle hole and the through hole.
  • the upper part of the drive disc is also provided with a ratchet, the upper surface of the drive disc is provided with ratchet teeth matching the ratchet, the ratchet is installed at the end of the output shaft, and the ratchet and the drive disc The ratchet is engaged.
  • the lower part of the through hole of the impact plate is provided with a positioning hole coaxial with the through hole, the diameter of the positioning hole is larger than the diameter of the through hole, and one end of the impact spring extends into the positioning hole.
  • a ring of steel balls is arranged around the outer circumferential wall of the through hole, a first washer is arranged between the steel ball and the upper end of the impact spring, and the first washer is sleeved on the The outer circumferential wall of the through hole.
  • a second washer is arranged between the limiting step of the transmission shaft and the lower end of the impact spring, and the second washer is sleeved on the transmission shaft.
  • the present invention has the following beneficial effects:
  • the present invention adopts the drive disc instead of the design of opening the chute on the drive shaft, it not only reduces the manufacturing cost, saves man-hours, and can realize rapid mass production, but also, because the "V" groove feature on the drive shaft is eliminated, The strength of the transmission shaft is improved, and the yield of the transmission shaft production is also improved.
  • Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention.
  • Figure 2 is a sectional view of Figure 1;
  • Figure 3 is an exploded schematic diagram of Example 1 of the present invention.
  • Figure 4 is a cross-sectional view of Embodiment 2 of the present invention.
  • Figure 5 is an exploded schematic diagram of Embodiment 2 of the present invention.
  • Figure 6 is a schematic diagram of the structure of the drive disk of the present invention.
  • Figure 7 is a schematic diagram of the structure of the impact disk of the present invention.
  • Fig. 8 is an exploded schematic diagram of a conventional impact structure.
  • an improved impact structure including drive shaft 1, impact disk 2, drive disk 3, output shaft 4 and impact
  • the spring 5 the drive disk 3 is set in a cylindrical shape, and its lower surface is provided with two symmetrical first inclined surfaces 31, the first inclined surfaces 31 are set in a "V" shape, and the central hole of the impact disk 2 is provided with a first inclined surface 31 matching second inclined surface 21, two second inclined surfaces 21 are symmetrically arranged, the cross section of the second inclined surface 21 is set in a "V" shape, the output end of the transmission shaft 1 passes through the impact disk 2 and is movably connected to the output shaft 4.
  • the drive disc 3 is fixedly installed on the transmission shaft 1, and the drive disc 3 is arranged in the middle hole of the impact disc 2.
  • the first inclined surface 31 is in contact with the second inclined surface 21, and the end of the output shaft 4 close to the impact disc 2 is provided with a first in the circumferential direction.
  • a second impact block 22 is provided on the upper end surface of the impact disk 2 along the circumferential direction.
  • One end of the impact spring 5 extends into the inner cavity of the impact disk 2 and the other end abuts against the limit step of the transmission shaft 1.
  • the angle between the plane on which the two first inclined surfaces 31 are located and the horizontal plane is an acute angle.
  • the angle between the plane on which the two second inclined surfaces 21 are located and the horizontal plane is an acute angle.
  • the drive shaft 1 is provided with a first keyway 11, the inner wall of the drive disc 3 is provided with two opposite second keyways 32, a steel ball 6 is arranged between the first keyway 11 and the second keyway 32, and the drive disc 3 passes through the steel balls 6, the first The keyway 11 and the second keyway 32 are connected to the transmission shaft 1.
  • the impact disk 2 is provided with a through hole 23 for the transmission shaft 1 to pass through.
  • the upper half of the through hole 23 is provided with a middle hole 24 coaxial with the through hole 23.
  • the diameter of the middle hole 24 is larger than that of the through hole 23.
  • the two inclined surfaces 21 are symmetrically arranged in the annular groove formed by the middle hole 24 and the through hole 23.
  • the lower part of the through hole 23 of the impact disk 2 is provided with a positioning hole 25 coaxial with the through hole 23.
  • the diameter of the positioning hole 25 is larger than that of the through hole 23.
  • One end of the impact spring 5 extends into the positioning hole 25.
  • a ring of steel balls 7 is arranged around the outer circumferential wall of the through hole 23.
  • a first washer 8 is arranged between the steel ball 7 and the upper end of the impact spring 5. The first washer 8 is sleeved outside the through hole 23. Circumferential wall.
  • a second washer 9 is provided between the limit step of the transmission shaft 1 and the lower end of the impact spring 5, and the second washer 9 is sleeved on the transmission shaft 1.
  • the drive shaft 1 drives the drive disk 3 to rotate
  • the impact disk 2 will rotate along the drive shaft 1
  • the second impact block 22 will impact the first impact block 41 to achieve one impact, thereby causing the output shaft 4 to rotate. Since the first inclined surface 31 of the drive disk 3 and the second inclined surface 21 of the impact disk 2 cooperate, the impact disk 2 will move downward along the axial direction of the drive shaft 1.
  • the impact plate 2 is reset upward under the action of the impact spring 5, and the second impact block 22 will hit the first impact block 41 again to achieve another impact.
  • the first inclined surface 31 of the drive disk 3 and the second inclined surface 21 of the impact disk 2 are matched again to make the impact disk 2 move downwards. In this way, the impact disk 2 strikes the first impact block of the output shaft 4 after a certain interval. 41. Enable the output shaft 4 to realize intermittent rotation.
  • An improved impact structure includes a transmission shaft 1, an impact disk 2, a drive disk 3, an output shaft 4 and an impact spring 5.
  • the drive disk 3 is set in a circle
  • the bottom surface of the cylinder is provided with two symmetrical first inclined surfaces 31, the first inclined surface 31 is set in a "V" shape, and the central hole of the impact disk 2 is provided with a second inclined surface 21 matching the first inclined surface 31.
  • Two second inclined surfaces 21 are arranged symmetrically, the cross-section of the second inclined surface 21 is set in a "V" shape, the output end of the transmission shaft 1 passes through the impact disk 2 and is movably connected to the output shaft 4, and the drive disk 3 is fixedly installed on the transmission shaft 1.
  • the drive plate 3 is arranged in the middle hole of the impact plate 2, the first inclined surface 31 is in contact with the second inclined surface 21, and the output shaft 4 is provided with a first impact block 41 along the circumferential direction at one end of the output shaft 4 close to the impact plate 2.
  • a second impact block 22 is provided along the circumferential direction on the upper end surface of the impact spring 5, one end of the impact spring 5 extends into the inner cavity of the impact disk 2, and the other end abuts against the limit step of the transmission shaft 1.
  • a ratchet wheel 10 is also provided on the upper part of the drive plate 3, and the upper surface of the drive plate 3 is provided with a ratchet tooth 33 that matches the ratchet wheel 10.
  • the ratchet wheel 10 is installed at the end of the output shaft 4, and the ratchet wheel 10 meshes with the ratchet tooth 33 of the drive plate 3. .
  • the angle between the plane on which the two first inclined surfaces 31 are located and the horizontal plane is an acute angle.
  • the angle between the plane on which the two second inclined surfaces 21 are located and the horizontal plane is an acute angle.
  • the drive shaft 1 is provided with a first keyway 11, the inner wall of the drive disc 3 is provided with two opposite second keyways 32, a steel ball 6 is arranged between the first keyway 11 and the second keyway 32, and the drive disc 3 passes through the steel balls 6, the first The keyway 11 and the second keyway 32 are connected to the transmission shaft 1.
  • the impact disk 2 is provided with a through hole 23 for the transmission shaft 1 to pass through.
  • the upper half of the through hole 23 is provided with a middle hole 24 coaxial with the through hole 23.
  • the diameter of the middle hole 24 is larger than that of the through hole 23.
  • the two inclined surfaces 21 are symmetrically arranged in the annular groove formed by the middle hole 24 and the through hole 23.
  • the lower part of the through hole 23 of the through hole 23 of the impact plate 2 is provided with a coaxial positioning hole 25.
  • the diameter of the positioning hole 25 is larger than the diameter of the through hole 23.
  • One end of the impact spring 5 extends into the positioning hole 25.
  • a ring of steel balls 7 is arranged around the outer circumferential wall of the through hole 23.
  • a first washer 8 is arranged between the steel ball 7 and the upper end of the impact spring 5. The first washer 8 is sleeved outside the through hole 23. Circumferential wall.
  • a second washer 9 is provided between the limit step of the transmission shaft 1 and the lower end of the impact spring 5, and the second washer 9 is sleeved on the transmission shaft 1.
  • the rotating principle of the output shaft 4 in this embodiment is the same as the rotating principle of Embodiment 1, except that this embodiment adds another function.
  • the driving disc 3 rotates, the driving disc 3 engages or disengages with the ratchet wheel 10 through the ratchet teeth 33, so that the output shaft 4 also obtains an axial movement in the axial direction while rotating.
  • the impact structure of the present invention is applied to an electric screwdriver, the electric screwdriver will increase the function of striking the screw in the axial direction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Vibration Dampers (AREA)
  • Transmission Devices (AREA)

Abstract

一种改良的冲击结构，包括传动轴（1）、冲击盘（2）、驱动盘（3）、输出轴（4）和冲击弹簧（5），驱动盘设置为圆筒形，其下表面设置有两个对称的第一斜面（31），第一斜面设置为"V"字形，冲击盘的中孔内设置有与第一斜面匹配的第二斜面（21），两个第二斜面呈对称设置，第二斜面的截面设置为"V"字形，传动轴的输出端穿过冲击盘后与输出轴活动连接，驱动盘固定安装于传动轴，输出轴靠近冲击盘的一端沿周方向设置有第一冲击块（41），冲击盘的上端面沿周向设置有第二冲击块（22），冲击弹簧一端伸入冲击盘的内腔。该冲击结构降低了制作成本，节省了工时，能实现快速的批量生产，而且，由于取消了传动轴上的"V"型槽特征，提高了传动轴强度，也提高了传动轴生产的良品率。

Description

一种改良的冲击结构 技术领域
本发明涉及电动螺丝批技术领域，尤其指一种改良的冲击结构。
背景技术
电动螺丝批是一种常用的手持式工具，其种类繁多。见图8，现有技术有一种具有冲击结构的电动螺丝批，其冲击结构的主要构件包括传动轴101、冲击盘102、输出轴103和冲击弹簧104，传动轴101中部两侧对称设置有截面为“V”字型的斜槽1012，冲击盘102的内腔壁的两侧对称设置有与斜槽1012配合的突起部，输出轴103的一端沿周方向设置有第一冲击块1031，冲击盘102的上端面沿周向设置有第二冲击块1021。其工作原理：冲击盘102与传动轴101通过钢珠105连接，传动轴101转动时，通过钢珠105带动冲击盘102转动，冲击盘102上的第二冲击块1021与输出轴103上第一冲击块1031敲击，实现一次冲击。传动轴101继续转动，冲击盘102沿着传动轴101的“V”字型的斜槽1012向下移动，当第二冲击块1021上端面脱离输出轴103下端面，冲击盘102在冲击弹簧104的作用下立即复位，进行下一次的冲击。
上述结构中，由于要在冲击盘102的内腔壁设置突起部和在传动轴101中部两侧开设斜槽1012，使得制作工艺复杂，制作成本高；而且，在传动轴101的两侧开设斜槽1012后，会使得传动轴101的强度下降，影响传动轴101的使用寿命。
发明概述
技术问题
问题的解决方案
技术解决方案
本发明的主要目的是克服现有技术中存在的不足，提供一种改良的冲击结构。
为实现上述目的，本发明采用如下技术方案：
一种改良的冲击结构，包括传动轴、冲击盘、驱动盘、输出轴和冲击弹簧，所述驱动盘设置为圆筒形，其下表面设置有两个对称的第一斜面，所述第一斜面 设置为“V”字形，所述冲击盘的中孔内设置有与所述第一斜面匹配的第二斜面，两个所述第二斜面呈对称设置，所述第二斜面的截面设置为“V”字形，所述传动轴的输出端穿过所述冲击盘后与所述输出轴活动连接，所述驱动盘固定安装于所述传动轴，并且所述驱动盘设置于所述冲击盘的中孔内，所述第一斜面与所述第二斜面接触，所述输出轴靠近所述冲击盘的一端沿周方向设置有第一冲击块，所述冲击盘的上端面沿周向设置有第二冲击块，所述冲击弹簧一端伸入所述冲击盘的内腔，另一端抵靠于所述传动轴的限位台阶。
两个所述第一斜面所在的平面分别与所述水平面的夹角为锐角。
两个所述第二斜面所在的平面分别与所述水平面的夹角为锐角。
所述传动轴设置有第一键槽，所述驱动盘内壁设置有两条相对的第二键槽，所述第一键槽和所述第二键槽之间设置有钢珠，所述驱动盘通过所述钢珠、所述第一键槽和所述第二键槽与所述传动轴连接。
所述冲击盘设置有供所述传动轴通过的通孔，所述通孔的上半部分设置有与所述通孔同轴的中孔，所述中孔的直径大于所述通孔的直径，两个所述第二斜面对称设置在所述中孔和所述通孔形成的环槽内。
所述驱动盘上部还设置有一棘轮，所述驱动盘的上表面设置有与所述棘轮匹配的棘齿，所述棘轮安装于所述输出轴的端部，并且所述棘轮与所述驱动盘的棘轮啮合。
所述冲击盘的通孔下部设置有与所述通孔同轴的定位孔，所述定位孔的直径大于所述通孔的直径，所述冲击弹簧的一端伸入所述定位孔内。
所述定位孔的底部，环绕所述通孔的外圆周壁设置有一圈钢珠，所述钢珠与所述冲击弹簧的上端部之间设置有第一垫圈，所述第一垫圈套接于所述通孔的外圆周壁。
所述传动轴的限位台阶与所述冲击弹簧的下端部之间设置有第二垫圈，所述第二垫圈套接于所述传动轴。
发明的有益效果
有益效果
与现有技术相比，本发明有益效果：
由于本发明采用驱动盘代替在传动轴上开设斜槽的设计，不但降低了制作成本，节省了工时，能实现快速的批量生产，而且，由于取消了传动轴上的“V”型槽特征，提高了传动轴强度，，也提高了传动轴生产的良品率。
对附图的简要说明
附图说明
图1为本发明实施例1的结构示意图；
图2为图1的剖视图；
图3是本发明实例例1的分解示意图；
图4是本发明实施例2的剖视图；
图5是本发明实施例2的分解示意图；
图6是本发明的驱动盘的结构示意图；
图7是本发明的冲击盘的结构示意图；
图8是现有冲击结构的分解示意图。
实施该发明的最佳实施例
本发明的最佳实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
见图1、图2、图3、图6和图7，这是本发明的实施例1，一种改良的冲击结构，包括传动轴1、冲击盘2、驱动盘3、输出轴4和冲击弹簧5，驱动盘3设置为圆筒形，其下表面设置有两个对称的第一斜面31，第一斜面31设置为“V”字形，冲击盘2的中孔内设置有与第一斜面31匹配的第二斜面21，两个第二斜面21呈对称设置，第二斜面21的截面设置为“V”字形，传动轴1的输出端穿过冲击盘2后与输出轴4活动连接，驱动盘3固定安装于传动轴1，并且驱动盘3设置于冲击盘2的中孔内，第一斜面31与第二斜面21接触，输出轴4靠近冲击盘2的一端沿周方向设置有第一冲击块41，冲击盘2的上端面沿周向设置有第二冲击块22，冲击弹簧5一端伸入冲击盘2的内腔，另一端抵靠于传动轴1的限位台阶。
两个第一斜面31所在的平面分别与水平面的夹角为锐角。
两个第二斜面21所在的平面分别与水平面的夹角为锐角。
传动轴1设置有第一键槽11，驱动盘3内壁设置有两条相对的第二键槽32，第一键槽11和第二键槽32之间设置有钢珠6，驱动盘3通过钢珠6、第一键槽11和第二键槽32与传动轴1连接。
冲击盘2设置有供传动轴1通过的通孔23，通孔23的上半部分设置有与通孔23同轴的中孔24，中孔24的直径大于通孔23的直径，两个第二斜面21对称设置在中孔24和通孔23形成的环槽内。
冲击盘2的通孔23下部设置有与通孔23同轴的定位孔25，定位孔25的直径大于通孔23的直径，冲击弹簧5的一端伸入定位孔25内。
定位孔25的底部，环绕通孔23的外圆周壁设置有一圈钢珠7，钢珠7与冲击弹簧5的上端部之间设置有第一垫圈8，第一垫圈8套接于通孔23的外圆周壁。
传动轴1的限位台阶与冲击弹簧5的下端部之间设置有第二垫圈9，第二垫圈9套接于传动轴1。
本发明的工作原理：传动轴1带动驱动盘3转动，冲击盘2会沿传动轴1转动，第二冲击块22会撞击第一冲击块41，实现一次撞击，从而使输出轴4转动。由于驱动盘3的第一斜面31与冲击盘2的第二斜面21配合作用，会使得冲击盘2沿传动轴1的轴向向下运动，当第二冲击块22上端面脱离第一冲击块41下端面后，，冲击盘2在冲击弹簧5的作用下向上复位，第二冲击块22会再次撞击第一冲击块41，又实现一次撞击。之后，驱动盘3的第一斜面31与冲击盘2的第二斜面21再次配合，使冲击盘2向下运动，如此循环，冲击盘2经过一定的间隔后撞击输出轴4的第一冲击块41，使输出轴4实现间歇转动。
见图4和图5，这是本发明的实施例2，一种改良的冲击结构，包括传动轴1、冲击盘2、驱动盘3、输出轴4和冲击弹簧5，驱动盘3设置为圆筒形，其下表面设置有两个对称的第一斜面31，第一斜面31设置为“V”字形，冲击盘2的中孔内设置有与第一斜面31匹配的第二斜面21，两个第二斜面21呈对称设置，第二斜面21的截面设置为“V”字形，传动轴1的输出端穿过冲击盘2后与输出轴4活动连接，驱动盘3固定安装于传动轴1，并且驱动盘3设置于冲击盘2的中孔内，第一斜面3 1与第二斜面21接触，输出轴4靠近冲击盘2的一端沿周方向设置有第一冲击块41，冲击盘2的上端面沿周向设置有第二冲击块22，冲击弹簧5一端伸入冲击盘2的内腔，另一端抵靠于传动轴1的限位台阶。驱动盘3上部还设置有一棘轮10，驱动盘3的上表面设置有与棘轮10匹配的棘齿33，棘轮10安装于输出轴4的端部，并且棘轮10与驱动盘3的棘齿33啮合。
两个第一斜面31所在的平面分别与水平面的夹角为锐角。
两个第二斜面21所在的平面分别与水平面的夹角为锐角。
传动轴1设置有第一键槽11，驱动盘3内壁设置有两条相对的第二键槽32，第一键槽11和第二键槽32之间设置有钢珠6，驱动盘3通过钢珠6、第一键槽11和第二键槽32与传动轴1连接。
冲击盘2设置有供传动轴1通过的通孔23，通孔23的上半部分设置有与通孔23同轴的中孔24，中孔24的直径大于通孔23的直径，两个第二斜面21对称设置在中孔24和通孔23形成的环槽内。
通孔23冲击盘2的通孔23下部设置有与同轴的定位孔25，定位孔25的直径大于通孔23的直径，冲击弹簧5的一端伸入定位孔25内。
定位孔25的底部，环绕通孔23的外圆周壁设置有一圈钢珠7，钢珠7与冲击弹簧5的上端部之间设置有第一垫圈8，第一垫圈8套接于通孔23的外圆周壁。
传动轴1的限位台阶与冲击弹簧5的下端部之间设置有第二垫圈9，第二垫圈9套接于传动轴1。
本实施例中的输出轴4的转动原理与实施例1的转动原理相同，不同之处在于本实施例增加了另一个功能。当驱动盘3转动时，驱动盘3通过棘齿33与棘轮10啮合或分离，使得输出轴4在转动的同时，在轴向也获得一个轴向的运动。将本发明的冲击结构应用到电动螺丝批时，会使电动螺丝批增加一个轴向击打螺丝钉的功能。
以上详细说明针对本发明的可行实施例之具体说明，惟实施例并非用以限制本发明的专利范围，凡未脱离本发明技艺精神所为之等效实施或变更，均应包含于本发明的保护范围中。

Claims (9)

  1. 一种改良的冲击结构，包括传动轴、冲击盘、驱动盘、输出轴和冲击弹簧，其特征在于：所述驱动盘设置为圆筒形，其下表面设置有两个对称的第一斜面，所述第一斜面设置为“V”字形，所述冲击盘的中孔内设置有与所述第一斜面匹配的第二斜面，两个所述第二斜面呈对称设置，所述第二斜面的截面设置为“V”字形，所述传动轴的输出端穿过所述冲击盘后与所述输出轴活动连接，所述驱动盘固定安装于所述传动轴，并且所述驱动盘设置于所述冲击盘的中孔内，所述第一斜面与所述第二斜面接触，所述输出轴靠近所述冲击盘的一端沿周方向设置有第一冲击块，所述冲击盘的上端面沿周向设置有第二冲击块，所述冲击弹簧一端伸入所述冲击盘的内腔，另一端抵靠于所述传动轴的限位台阶。
  2. 根据权利要求1所述的改良的冲击结构，其特征在于：两个所述第一斜面所在的平面分别与所述水平面的夹角为锐角。
  3. 根据权利要求1所述的改良的冲击结构，其特征在于：两个所述第二斜面所在的平面分别与所述水平面的夹角为锐角。
  4. 根据权利要求1所述的改良的冲击结构，其特征在于：所述传动轴设置有第一键槽，所述驱动盘内壁设置有两条相对的第二键槽，所述第一键槽和所述第二键槽之间设置有钢珠，所述驱动盘通过所述钢珠、所述第一键槽和所述第二键槽与所述传动轴连接。
  5. 根据权利要求1所述的改良的冲击结构，其特征在于：所述冲击盘设置有供所述传动轴通过的通孔，所述通孔的上半部分设置有与所述通孔同轴的中孔，所述中孔的直径大于所述通孔的直径，两个所述第二斜面对称设置在所述中孔和所述通孔形成的环槽内。
  6. 根据权利要求1至5任意一项所述的改良的冲击结构，其特征在于：所述驱动盘上部还设置有一棘轮，所述驱动盘的上表面设置有与所述棘轮匹配的棘齿，所述棘轮安装于所述输出轴的端部，并且所述棘轮与所述驱动盘的棘轮啮合。
  7. 根据权利要求1所述的改良的冲击结构，其特征在于：所述冲击盘的通孔下部设置有与所述通孔同轴的定位孔，所述定位孔的直径大于所述通孔的直径，所述冲击弹簧的一端伸入所述定位孔内。
  8. 根据权利要求7所述的改良的冲击结构，其特征在于：所述定位孔的底部，环绕所述通孔的外圆周壁设置有一圈钢珠，所述钢珠与所述冲击弹簧的上端部之间设置有第一垫圈，所述第一垫圈套接于所述通孔的外圆周壁。
  9. 根据权利要求1所述的改良的冲击结构，其特征在于：所述传动轴的限位台阶与所述冲击弹簧的下端部之间设置有第二垫圈，所述第二垫圈套接于所述传动轴。
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