WO2021232642A1 - Dual blade transmission mechanism and electric shears having said dual blade transmission mechanism - Google Patents

Dual blade transmission mechanism and electric shears having said dual blade transmission mechanism Download PDF

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Publication number
WO2021232642A1
WO2021232642A1 PCT/CN2020/116345 CN2020116345W WO2021232642A1 WO 2021232642 A1 WO2021232642 A1 WO 2021232642A1 CN 2020116345 W CN2020116345 W CN 2020116345W WO 2021232642 A1 WO2021232642 A1 WO 2021232642A1
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WO
WIPO (PCT)
Prior art keywords
blade
gear
transmission mechanism
driven bevel
bevel gear
Prior art date
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PCT/CN2020/116345
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French (fr)
Chinese (zh)
Inventor
马先鹏
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东莞市嘉航实业有限公司
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Publication of WO2021232642A1 publication Critical patent/WO2021232642A1/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/02—Secateurs; Flower or fruit shears
    • A01G3/033—Secateurs; Flower or fruit shears having motor-driven blades
    • A01G3/037—Secateurs; Flower or fruit shears having motor-driven blades the driving means being an electric motor
    • 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
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • F16H1/203—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with non-parallel axes
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/038—Gearboxes for accommodating bevel gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion

Definitions

  • a double-knife transmission mechanism comprising a housing assembly, a blade assembly arranged at the front end of the housing assembly, and a transmission assembly arranged in the housing assembly, the housing
  • the assembly is composed of an upper shell and a lower shell.
  • the blade assembly includes an upper blade and a lower blade.
  • the upper blade and the lower blade are connected in a scissors shape by a blade shaft, and the ends of the upper blade and the lower blade are respectively provided with an upper blade gear and a lower blade.
  • the end of the blade shaft away from the upper blade penetrates the lower shell and is threadedly connected with the toothed nut on the lower shell, and the toothed screw is provided on the side of the toothed nut on the lower shell.
  • the tooth pattern on the cap meshes with the tooth pattern on the toothed screw.
  • the invention also discloses an electric scissors with a double-knife transmission mechanism.
  • the electric scissors includes an electric scissors shell, a drive assembly arranged in the electric scissors shell, a trigger assembly arranged at the front end of the electric scissors shell, and the above-mentioned Double-blade transmission mechanism, the front end of the electric scissors housing is fixedly connected with the housing assembly of the double-blade transmission mechanism, the drive mechanism is composed of a control circuit board, a motor and a reducer, and the control circuit board is electrically connected to the motor , The output end of the motor is fixedly connected with the input end of the reducer, the output end of the reducer is fixedly connected with the active bevel gear of the double-pole transmission mechanism, the trigger assembly includes a trigger body and a Hall plate, wherein the Hall The board is electrically connected to the control circuit board, the trigger body is fixedly installed below the housing assembly, the Hall plate is arranged inside the housing assembly, the trigger body is provided with a first magnet, and the trigger body is close to the first magnet.
  • the electric scissors further includes a power supply port, the power supply port is arranged at the end position of the electric scissors housing, and one end of the power supply port penetrates the electric scissors housing and is electrically connected to the control circuit board in the electric scissors housing, and the other end Connect the mains power through the power cord.
  • Figure 3 is a structural diagram of the electric scissors in the present invention.
  • the driving bevel gear 8 is a tapered tooth, and one end of the driving bevel gear 8 away from the upper driven bevel gear 9 and the lower driven bevel gear 10 penetrates the housing assembly and extends to the outside of the housing assembly.
  • the upper driven bevel gear 9, the lower driven bevel gear 10, the upper spur gear 12, and the lower spur gear 13 are arranged coaxially, and the upper spur gear 12 and the lower spur gear 13 are arranged at intervals from the driving bevel gear 8.
  • a gap is formed between the upper spur gear 12 and the lower spur gear 13, and the gap value is between 0.5 mm and 2 mm.
  • the gap value formed between the upper spur gear 12 and the lower spur gear 13 is 1 mm.
  • an electric scissors with a double-knife transmission mechanism the electric scissors including an electric scissors housing, a drive assembly arranged in the electric scissors housing, and
  • the trigger assembly provided at the front end of the electric scissors housing and the double-blade transmission mechanism in the first embodiment, the front end of the electric scissors housing is fixedly connected with the housing assembly of the double-blade transmission mechanism, and the drive mechanism is controlled by a control circuit A board 19, a motor 20, and a reducer 21 are formed.
  • the control circuit board 19 is electrically connected to the motor 20.
  • This signal is generated during the operation of the motor 20 and can be used for the main control chip U1 to control the commutation driving signal of the motor 20, and the motor 20 drive process Real-time sampling of the voltage value on the bus sampling resistor R47, through resistor R27, resistor R26, capacitor C18, resistor R25, resistor R24, resistor R23 and capacitor C17 connected to the 3rd and 5th pins of the main control chip U1, the main control The chip U1 can calculate the current drive current through the AD function collection to realize the detection of the motor system control; the Hall control circuit 32 in Figure 9 is composed of the power communication input port CON101, resistor R102, resistor R109, capacitor C101, capacitor C102, and capacitor C103 , Capacitor C104, Capacitor C107, Trigger Sensor U101, Big Mouth Sensor U102, Closed Sensor U105, and Microcontrol Unit U104.
  • Microcontrol Unit U104 the model of Microcontrol Unit U104 is PIC16F1704.
  • Trigger Sensor U101, Big Mouth Sensor U102 and Closed Sensor U105 all adopt models as For the SS341RT sensor, the micro-control unit U104 is also connected with a programming port P101.
  • the first Hall 25 on the Hall plate 23 senses the magnetic field of the first magnet 24 on the trigger body 22, and feeds the upper blade 3 and the lower blade 3
  • the blade 4 provides cutting instructions.
  • the main control chip 29 on the control circuit board 19 detects that the trigger body 22 is triggered, the drive motor 20 rotates forward, and the torque of the motor 20 is amplified by the reducer 21, and finally the amplified torque is transmitted to The driving bevel gear 8 on the double-blade transmission mechanism.
  • the driving bevel gear 8 transmits the torque to the upper driven bevel gear 9 and the lower driven bevel gear 10, and then the upper driven bevel gear 9 and the lower driven bevel gear 10
  • the upper spur gear 12 and the lower spur gear 13 transmit torque to the upper blade 3 and the lower blade 4.
  • the upper blade 3 and the lower blade 4 rotate around the blade shaft 5 to perform a closing action, when the main control chip 29 on the control circuit board 19 When it is detected that the trigger body 22 is released, the motor 20 reverses.
  • the blade 3 and the lower blade 4 rotate around the blade shaft 5 to perform an opening action until the second Hall 26 detects the first on the lower blade 4
  • the motor 20 stops working and completes a shearing action.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • Scissors And Nippers (AREA)

Abstract

A dual blade transmission mechanism and a pair of electric shears having said dual blade transmission mechanism, the dual blade transmission mechanism comprising an outer casing assembly, a blade assembly arranged at a front end portion of the outer casing assembly, and a transmission assembly arranged within the outer casing assembly, the outer casing assembly is made up of an upper casing (1) and a lower casing (2), the blade assembly comprises an upper blade (3) and a lower blade (4), the upper blade is connected to the lower blade in a scissor-like shape by means of a blade shaft (5), the transmission assembly comprises a drive bevel gear (8) and an upper driven bevel gear (9) and a lower driven bevel gear (10) arranged at two ends above and below the drive bevel gear and meshing with the drive bevel gear, and the upper driven bevel gear is connected to the lower driven bevel gear by means of a driven bevel gear shaft (11). The dual blade transmission mechanism has a simple structure, many points of force, good operating stability, high cutting efficiency, the upper blade and the lower blade are able to simultaneously performing cutting, cutting speed is fast, and the upper blade and the lower blade won't cause gear warping during cutting, improving product service life.

Description

一种双刀传动机构以及带有该双刀传动机构的电动剪刀Double-knife transmission mechanism and electric scissors with the double-knife transmission mechanism 技术领域Technical field
本发明涉及园林工具技术领域，具体为一种双刀传动机构以及带有该双刀传动机构的电动剪刀。The invention relates to the technical field of garden tools, in particular to a double-knife transmission mechanism and an electric scissors with the double-knife transmission mechanism.
背景技术Background technique
为了美化环境，营造好的园林效果，需要经常对园林树木进行修剪。目前，园林树木的修剪都是通过人工手持修枝剪进行修剪，效率低，操作也不方便。因此，电动剪刀应运而生，例如申请号为CN201610484341.X的中国专利，公开了一种电动剪刀，包括机身壳体，机身壳体的前端的机头主体，后端是电源线，机身壳体内设有马达，马达与牙箱齿圈连接，牙箱齿圈与丝杆螺母连接；所述马达通过电机齿轮与行星齿连接，行星齿固定在行星齿架上，行星齿架的一端连接有万向接传动块，万向接传动块的外侧是万向接套管；第一轴承固定在行星齿架上，行第一球碗、第一球头及第二轴承分别与设置在丝杆上的第三轴承、第二球头以及第二球碗依次固定；所述丝杆固定在机头主体上，丝杆在机头主体固定端的下部设置有霍尔板，霍尔板底部设置有扳机，霍尔板和丝杆之间设置有磁铁；所述机头主体的前端设置有定刀片和动刀片，定刀片设置在动刀片的下端。该专利的不足之处在于：1、定剪刀和动剪刀的剪切速度慢，剪切的力度大，长时间的剪切或工作强度大时，动剪刀容易翘齿，影响产品的使用寿命；2、传动机构复杂，传动的受力点少，工作稳定性差，影响了剪切的效率。In order to beautify the environment and create a good garden effect, it is necessary to frequently trim the garden trees. At present, the pruning of garden trees is done by hand-held pruning shears, which is inefficient and inconvenient to operate. Therefore, electric scissors came into being. For example, a Chinese patent with application number CN201610484341.X discloses an electric scissors, which includes a body shell, a head body at the front end of the body shell, and a power cord at the back end. A motor is arranged in the body shell, the motor is connected with the tooth box ring gear, and the tooth box ring gear is connected with the screw nut; the motor is connected with the planet gear through the motor gear, the planet gear is fixed on the planet gear carrier, and one end of the planet gear carrier A universal joint transmission block is connected, and the outside of the universal joint transmission block is a universal joint sleeve; the first bearing is fixed on the planetary gear carrier, and the first ball bowl, the first ball head and the second bearing are respectively arranged in The third bearing, the second ball head and the second ball bowl on the screw rod are fixed in sequence; the screw rod is fixed on the main body of the machine head, the screw rod is provided with a Hall plate at the lower part of the fixed end of the machine head body, and the bottom of the Hall plate A trigger is provided, and a magnet is provided between the Hall plate and the screw rod; the front end of the head body is provided with a fixed blade and a movable blade, and the fixed blade is provided at the lower end of the movable blade. The shortcomings of this patent are: 1. The cutting speed of fixed scissors and movable scissors is slow, and the shearing force is large. When long-term cutting or working intensity is high, the movable scissors are easy to warp teeth, which affects the service life of the product; 2. The transmission mechanism is complex, the transmission force points are few, and the working stability is poor, which affects the efficiency of shearing.
发明内容Summary of the invention
本发明的目的在于提供一种双刀传动机构以及带有该双刀传动机构的电动剪刀，其中双刀传动机构结构简单，受力点多，工作稳定性好，剪切的效率高，同时上刀片和下刀片可以同时剪切，剪切的速度快，且剪切的过程中上刀片和下刀片不会翘齿，提高了产品的使用寿命的优点，解决了上述技术背景所提出的问题。The purpose of the present invention is to provide a double-knife transmission mechanism and electric scissors with the double-knife transmission mechanism. The blade and the lower blade can cut at the same time, the cutting speed is fast, and the upper blade and the lower blade will not lift the teeth during the cutting process, which improves the service life of the product and solves the problems raised by the above technical background.
为实现上述目的，本发明提供如下技术方案：一种双刀传动机构，该双刀传动机构包括外壳组件、设置在外壳组件前端部的刀片组件以及设置在外壳组件内的传动组件，所述外壳组件由上壳和下壳构成，所述刀片组件包括上刀片和下刀片，所述上刀片和下刀片通过刀片轴连接呈剪刀状，且上刀片和下刀片末端分别设置有上刀片齿轮和下刀片齿轮，所述上刀片齿轮和下刀片齿轮的两侧分别设置有定位弹簧，所述定位弹簧远离上刀片齿轮和下刀片齿轮一端与外壳组件内壁限位连接，所述传动组件包括主动伞齿以及设置在主动伞齿上下两端并与主动伞齿相啮合的上从动伞齿和下从动伞齿，所述上从动伞齿和下从动伞齿通过从动伞齿轴连接，且上从动伞齿和下从动伞齿可沿从动伞齿轴做相反方向的转动，所述上从动伞齿上钢性连接有上直齿轮，所述下从动伞齿上钢性连接有下直齿轮，所述上直齿轮和下直齿轮分别与上刀片齿轮和下刀片齿轮相啮合。In order to achieve the above objective, the present invention provides the following technical solution: a double-knife transmission mechanism, the double-knife transmission mechanism comprising a housing assembly, a blade assembly arranged at the front end of the housing assembly, and a transmission assembly arranged in the housing assembly, the housing The assembly is composed of an upper shell and a lower shell. The blade assembly includes an upper blade and a lower blade. The upper blade and the lower blade are connected in a scissors shape by a blade shaft, and the ends of the upper blade and the lower blade are respectively provided with an upper blade gear and a lower blade. A blade gear, two sides of the upper blade gear and the lower blade gear are respectively provided with positioning springs, and one end of the positioning spring away from the upper blade gear and the lower blade gear is connected with the inner wall of the housing assembly in a limited position, and the transmission assembly includes active bevel gears And the upper driven bevel gear and the lower driven bevel gear arranged at the upper and lower ends of the driving bevel gear and meshed with the driving bevel gear, the upper driven bevel gear and the lower driven bevel gear are connected by the driven bevel gear shaft, And the upper driven bevel gear and the lower driven bevel gear can rotate in opposite directions along the driven bevel gear shaft, the upper driven bevel gear is rigidly connected with an upper straight gear, and the upper steel of the lower driven bevel gear A lower spur gear is sexually connected, and the upper spur gear and the lower spur gear mesh with the upper blade gear and the lower blade gear respectively.
优选的，所述上壳和下壳内侧均设置有滑槽，所述上从动伞齿和下从动伞齿远离上直齿轮和下直齿轮一端面均设置有与滑槽相适配的滑轨，所述滑轨呈圆环状。Preferably, a sliding groove is provided on the inner side of the upper shell and the lower housing, and the upper and lower driven bevel teeth are provided with a sliding groove on one end face away from the upper spur gear and the lower spur gear. The sliding rail has a circular ring shape.
优选的，所述刀片轴远离上刀片一端贯穿下壳后与下壳上的齿纹螺帽螺纹连接，所述下壳上位于齿纹螺帽一侧设置有齿纹螺丝，所述齿纹螺帽上的齿纹与齿纹螺丝上的齿纹相啮合。Preferably, the end of the blade shaft away from the upper blade penetrates the lower shell and is threadedly connected with the toothed nut on the lower shell, and the toothed screw is provided on the side of the toothed nut on the lower shell. The tooth pattern on the cap meshes with the tooth pattern on the toothed screw.
优选的，所述主动伞齿为锥形齿，且主动伞齿远离上从动伞齿和下从动伞齿一端贯穿外壳组件并延伸至外壳组件外侧。Preferably, the driving bevel teeth are tapered teeth, and one end of the driving bevel teeth away from the upper driven bevel teeth and the lower driven bevel teeth penetrates the housing assembly and extends to the outside of the housing assembly.
优选的，所述上从动伞齿、下从动伞齿、上直齿轮和下直齿轮同轴设置，所述上直齿轮和下直齿轮与主动伞齿间隔设置，且上直齿轮和下直齿轮之间形成有间隙，该间隙值在0.5mm-2mm之间。Preferably, the upper driven bevel gear, the lower driven bevel gear, the upper spur gear and the lower spur gear are arranged coaxially, and the upper spur gear and the lower spur gear are spaced apart from the driving bevel gear, and the upper spur gear and the lower spur gear are spaced apart from the driving bevel gear. A gap is formed between the spur gears, and the gap value is between 0.5mm-2mm.
本发明还公开了一种带有双刀传动机构的电动剪刀，该电动剪刀包括电动剪刀壳体、设在电动剪刀壳体内的驱动组件以及设在电动剪刀壳体前端部的扳机组件和上述的双刀传动机构，所述电动剪刀壳体的前端部与双刀传动机构的外壳组件固定连接，所述驱动机构由控制电路板、电机和减速机构成，所述控制电路板与电机电性连接，所述电机的输出端与减速机的输入端固定连接，所述减速机的输出端与双刀传动机构的主动伞齿固定连接，所述扳机组件包括 扳机本体和霍尔板，其中霍尔板与控制电路板电性连接，所述扳机本体固定安装在外壳组件的下方位置，所述霍尔板设置在外壳组件内部，所述扳机本体上设置有第一磁铁，且扳机本体靠近第一磁铁一端贯穿外壳组件，并延伸至外壳组件内部，所述霍尔板上设置有与第一磁铁相对应的第一霍尔，且霍尔板远离第一霍尔一端设置有第二霍尔，所述第二霍尔与下刀片上的第二磁铁感应连接。The invention also discloses an electric scissors with a double-knife transmission mechanism. The electric scissors includes an electric scissors shell, a drive assembly arranged in the electric scissors shell, a trigger assembly arranged at the front end of the electric scissors shell, and the above-mentioned Double-blade transmission mechanism, the front end of the electric scissors housing is fixedly connected with the housing assembly of the double-blade transmission mechanism, the drive mechanism is composed of a control circuit board, a motor and a reducer, and the control circuit board is electrically connected to the motor , The output end of the motor is fixedly connected with the input end of the reducer, the output end of the reducer is fixedly connected with the active bevel gear of the double-pole transmission mechanism, the trigger assembly includes a trigger body and a Hall plate, wherein the Hall The board is electrically connected to the control circuit board, the trigger body is fixedly installed below the housing assembly, the Hall plate is arranged inside the housing assembly, the trigger body is provided with a first magnet, and the trigger body is close to the first magnet. One end of the magnet penetrates the housing assembly and extends to the inside of the housing assembly, a first hall corresponding to the first magnet is provided on the hall plate, and a second hall is provided at the end of the hall plate away from the first hall, The second Hall is inductively connected with the second magnet on the lower blade.
优选的，所述电动剪刀还包括供电端口，所述供电端口设置在电动剪刀壳体末端位置，且供电端口一端贯穿电动剪刀壳体并与电动剪刀壳体内的控制电路板电性连接，另一端通过电源线连接市电。Preferably, the electric scissors further includes a power supply port, the power supply port is arranged at the end position of the electric scissors housing, and one end of the power supply port penetrates the electric scissors housing and is electrically connected to the control circuit board in the electric scissors housing, and the other end Connect the mains power through the power cord.
优选的，所述控制电路板至少包括主控芯片与主控芯片电性连接的供电电路和电机控制电路，其中主控芯片为单片机，其型号为XMC1302。Preferably, the control circuit board at least includes a power supply circuit and a motor control circuit electrically connected between the main control chip and the main control chip, wherein the main control chip is a single-chip microcomputer, and its model is XMC1302.
优选的，所述霍尔板上设置有霍尔控制电路，所述霍尔控制电路与主控芯片通过串口通讯连接，且霍尔控制电路由电源通讯输入端口CON101、电阻R102、电阻R109、电容C101、电容C102、电容C103、电容C104、电容C107、扳机传感器U101、大口传感器U102、闭口传感器U105以及微控单元U104构成，所述微控单元U104上还连接有烧写口P101。Preferably, the Hall board is provided with a Hall control circuit, and the Hall control circuit is connected to the main control chip through a serial port communication. C101, capacitor C102, capacitor C103, capacitor C104, capacitor C107, trigger sensor U101, big mouth sensor U102, closed mouth sensor U105, and a micro-control unit U104 are formed. The micro-control unit U104 is also connected with a programming port P101.
与现有技术相比，本发明的有益效果如下：Compared with the prior art, the beneficial effects of the present invention are as follows:
1、本发明通过设置双刀传动机构，该双刀传动机构由外壳组件、刀片组件以及传动组件构成，结构简单，其中传动组件上的受力点多，工作稳定性好，同时传动组件上的主动伞齿带动其上下两端面的上从动伞齿和下从动伞齿做相反方向的转动，上从动伞齿和下从动伞齿上的上直齿轮和下直齿轮分别与上刀片齿轮和下刀片齿轮啮合，并驱动上刀片和下刀片同时做剪切动作，相对于传统的动剪刀剪切，剪切的速度快，效率高。1. The present invention is provided with a double-knife transmission mechanism. The double-knife transmission mechanism is composed of a housing assembly, a blade assembly and a transmission assembly, and has a simple structure. The driving bevel gear drives the upper and lower driven bevel teeth on the upper and lower end faces to rotate in opposite directions, and the upper and lower spur gears on the upper and lower driven bevel teeth and the upper blade respectively The gear meshes with the gear of the lower blade, and drives the upper blade and the lower blade to simultaneously perform cutting actions. Compared with the traditional moving scissors, the cutting speed is fast and the efficiency is high.
2、本发明通过在上刀片上设置上刀片齿轮，在下刀片上设置下刀片齿轮，该上刀片齿轮和下刀片齿轮分别与上直齿轮和下直齿轮啮合，可以有效的解决现有电动剪刀长时间的剪切或工作强度大时，动剪刀容易翘齿，影响产品的使用寿命的问题。2. In the present invention, the upper blade gear is provided on the upper blade and the lower blade gear is provided on the lower blade. The upper blade gear and the lower blade gear respectively mesh with the upper spur gear and the lower spur gear, which can effectively solve the length of the existing electric scissors. When the shearing time or working intensity is high, it is easy to lift the teeth when moving the scissors, which affects the service life of the product.
3、本发明中的电动剪刀结构简单，剪切速度快，操作简单，在剪切时扣动扳机本体，霍尔板上的第一霍尔感应到扳机本体上的第一磁铁的磁场，并给上刀片和下刀片提供剪切指令，当控制电路板上的主控芯片检测到扳机本体触 发时，驱动电机正转，并通过减速机将电机扭矩放大，最后将放大的扭矩传递给双刀传动机构上的主动伞齿，主动伞齿将扭矩传递给上从动伞齿和下从动伞齿，再由上从动伞齿和下从动伞齿上的上直齿轮和下直齿轮将扭矩传递给上刀片和下刀片，上刀片和下刀片以刀片轴为中心旋转执行闭口动作，当控制电路板上的主控芯片检测到扳机本体松开时，电机反转，根据机械结构原理上刀片和下刀片以刀片轴为中心旋转执行开口动作，直至第二霍尔检测到下刀片上的第二磁铁的磁场时，电机停止工作，完成一次剪切动作。3. The electric scissors in the present invention have simple structure, fast cutting speed and simple operation. When the trigger body is pulled during cutting, the first hall on the hall plate senses the magnetic field of the first magnet on the trigger body, and Provide cutting instructions for the upper blade and the lower blade. When the main control chip on the control circuit board detects that the trigger body is triggered, the drive motor rotates forward, and the motor torque is amplified by the reducer, and finally the amplified torque is transmitted to the double blade The driving bevel gear on the transmission mechanism, the driving bevel gear transmits the torque to the upper driven bevel gear and the lower driven bevel gear, and then the upper spur gear and the lower spur gear on the upper driven bevel gear and the lower driven bevel gear Torque is transmitted to the upper blade and the lower blade. The upper blade and the lower blade rotate around the blade axis to perform the closing action. When the main control chip on the control circuit board detects that the trigger body is released, the motor reverses. According to the principle of mechanical structure The blade and the lower blade rotate around the blade axis to perform an opening action, until the second Hall detects the magnetic field of the second magnet on the lower blade, the motor stops working and completes a shearing action.
附图说明Description of the drawings
图1为本发明中双刀传动机构的***图；Figure 1 is an exploded view of the double-knife transmission mechanism of the present invention;
图2为本发明中双刀传动机构的结构图；Figure 2 is a structural diagram of the double-knife transmission mechanism of the present invention;
图3为本发明中电动剪刀的结构图；Figure 3 is a structural diagram of the electric scissors in the present invention;
图4为本发明中电动剪刀的内部结构示意图；Figure 4 is a schematic diagram of the internal structure of the electric scissors in the present invention;
图5为本发明中电动剪刀的原理方框图；Figure 5 is a schematic block diagram of the electric scissors in the present invention;
图6为本发明中电动剪刀的主控芯片的电路原理图；Fig. 6 is a schematic circuit diagram of the main control chip of the electric scissors in the present invention;
图7为本发明中电动剪刀的供电电路的电路原理图；Fig. 7 is a schematic circuit diagram of the power supply circuit of the electric scissors in the present invention;
图8为本发明中电动剪刀的电机控制电路的电路原理图；Fig. 8 is a schematic circuit diagram of the motor control circuit of the electric scissors in the present invention;
图9为本发明中电动剪刀的霍尔控制电路的电路原理图。Fig. 9 is a circuit principle diagram of the Hall control circuit of the electric scissors in the present invention.
图中的附图标记及名称如下：The reference signs and names in the figure are as follows:
1、上壳；2、下壳；3、上刀片；4、下刀片；5、刀片轴；6、上刀片齿轮；7、下刀片齿轮；8、主动伞齿；9、上从动伞齿；10、下从动伞齿；11、从动伞齿轴；12、上直齿轮；13、下直齿轮；14、定位弹簧；15、滑槽；16、滑轨；17、齿纹螺帽；18、齿纹螺丝；19、控制电路板；20、电机；21、减速机；22、扳机本体；23、霍尔板；24、第一磁铁；25、第一霍尔；26、第二霍尔；27、第二磁铁；28、供电端口；29、主控芯片；30、供电电路；31、电机控制电路；32、霍尔控制电路。1. Upper shell; 2. Lower shell; 3. Upper blade; 4. Lower blade; 5. Blade shaft; 6. Upper blade gear; 7. Lower blade gear; 8. Driving bevel gear; 9. Upper driven bevel gear ; 10. Lower driven bevel gear; 11. Driven bevel gear shaft; 12. Upper spur gear; 13. Lower spur gear; 14. Positioning spring; 15. Slide groove; 16. Slide rail; 17, Tooth nut 18, toothed screw; 19, control circuit board; 20, motor; 21, reducer; 22, trigger body; 23, Hall plate; 24, first magnet; 25, first Hall; 26, second Hall; 27. Second magnet; 28. Power supply port; 29. Main control chip; 30. Power supply circuit; 31. Motor control circuit; 32. Hall control circuit.
具体实施方式Detailed ways
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。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
实施例一：Example one:
请参阅图1至图2，本发明提供的一种实施例：一种双刀传动机构，该双刀传动机构包括外壳组件、设置在外壳组件前端部的刀片组件以及设置在外壳组件内的传动组件，其中外壳组件由上壳1和下壳2构成，刀片组件包括上刀片3和下刀片4，所述上刀片3和下刀片4通过刀片轴5连接呈剪刀状，且上刀片3和下刀片4末端分别设置有上刀片齿轮6和下刀片齿轮7，所述上刀片齿轮6和下刀片齿轮7的两侧分别设置有定位弹簧14，所述定位弹簧14远离上刀片齿轮6和下刀片齿轮7一端与外壳组件内壁限位连接，所述传动组件包括主动伞齿8以及设置在主动伞齿8上下两端并与主动伞齿8相啮合的上从动伞齿9和下从动伞齿10，所述上从动伞齿9和下从动伞齿10通过从动伞齿轴11连接，且上从动伞齿9和下从动伞齿10可沿从动伞齿轴11做相反方向的转动，所述上从动伞齿9上钢性连接有上直齿轮12，所述下从动伞齿10上钢性连接有下直齿轮13，所述上直齿轮12和下直齿轮13分别与上刀片齿轮6和下刀片齿轮7相啮合。Please refer to Figures 1 to 2, an embodiment provided by the present invention: a double-knife transmission mechanism, the double-knife transmission mechanism includes a housing assembly, a blade assembly arranged at the front end of the housing assembly, and a transmission set in the housing assembly The housing assembly is composed of an upper shell 1 and a lower shell 2. The blade assembly includes an upper blade 3 and a lower blade 4. The upper blade 3 and the lower blade 4 are connected in a scissors shape by a blade shaft 5, and the upper blade 3 and the lower blade The end of the blade 4 is respectively provided with an upper blade gear 6 and a lower blade gear 7, and both sides of the upper blade gear 6 and the lower blade gear 7 are respectively provided with positioning springs 14, which are far away from the upper blade gear 6 and the lower blade One end of the gear 7 is connected with the inner wall of the housing assembly in a position limit. The transmission assembly includes a driving bevel tooth 8 and an upper driven bevel tooth 9 and a lower driven bevel which are arranged at the upper and lower ends of the driving bevel tooth 8 and mesh with the driving bevel tooth 8. Tooth 10, the upper driven bevel gear 9 and the lower driven bevel gear 10 are connected by the driven bevel gear shaft 11, and the upper driven bevel gear 9 and the lower driven bevel gear 10 can be made along the driven bevel gear shaft 11. Rotating in the opposite direction, the upper driven bevel gear 9 is rigidly connected to an upper spur gear 12, and the lower driven bevel tooth 10 is rigidly connected to a lower spur gear 13, and the upper spur gear 12 and the lower straight gear are rigidly connected to each other. The gears 13 mesh with the upper blade gear 6 and the lower blade gear 7 respectively.
具体的，所述上壳1和下壳2内侧均设置有滑槽15，所述上从动伞齿9和下从动伞齿10远离上直齿轮12和下直齿轮13一端面均设置有与滑槽15相适配的滑轨16，所述滑轨16呈圆环状，当主动伞齿8驱动上从动伞齿9和下从动伞齿10转动时，上从动伞齿9和下从动伞齿10上的滑轨16可沿着上壳1和下壳2内侧的滑槽15旋转。Specifically, the upper shell 1 and the lower shell 2 are provided with a sliding groove 15 on the inner side, and the upper driven bevel teeth 9 and the lower driven bevel teeth 10 are far away from the upper spur gear 12 and the lower spur gear 13 on one end surface. The sliding rail 16 adapted to the sliding groove 15 has a circular ring shape. When the driving bevel gear 8 drives the upper driven bevel gear 9 and the lower driven bevel gear 10 to rotate, the upper driven bevel gear 9 The slide rail 16 on the lower driven umbrella tooth 10 can rotate along the slide groove 15 inside the upper shell 1 and the lower shell 2.
具体的，所述刀片轴5远离上刀片3一端贯穿下壳2后与下壳2上的齿纹螺帽17螺纹连接，所述下壳2上位于齿纹螺帽17一侧设置有齿纹螺丝18，所述齿纹螺帽17上的齿纹与齿纹螺丝18上的齿纹相啮合，齿纹啮合锁紧方式稳定性好，上刀片3和下刀片4在长期的剪切过程中不易脱落。Specifically, the end of the blade shaft 5 away from the upper blade 3 penetrates the lower shell 2 and is threadedly connected with the toothed nut 17 on the lower shell 2. The lower shell 2 is provided with toothed threads on the side of the toothed nut 17 Screw 18, the tooth pattern on the tooth pattern nut 17 meshes with the tooth pattern on the tooth pattern screw 18, the tooth pattern meshing and locking method is stable, the upper blade 3 and the lower blade 4 are in the long-term shearing process Not easy to fall off.
具体的，所述主动伞齿8为锥形齿，且主动伞齿8远离上从动伞齿9和下从动伞齿10一端贯穿外壳组件并延伸至外壳组件外侧。Specifically, the driving bevel gear 8 is a tapered tooth, and one end of the driving bevel gear 8 away from the upper driven bevel gear 9 and the lower driven bevel gear 10 penetrates the housing assembly and extends to the outside of the housing assembly.
具体的，所述上从动伞齿9、下从动伞齿10、上直齿轮12和下直齿轮13同轴设置，所述上直齿轮12和下直齿轮13与主动伞齿8间隔设置，且上直齿轮12和下直齿轮13之间形成有间隙，该间隙值在0.5mm-2mm之间，在本实 施例中上直齿轮12和下直齿轮13之间形成间隙值为1mm。Specifically, the upper driven bevel gear 9, the lower driven bevel gear 10, the upper spur gear 12, and the lower spur gear 13 are arranged coaxially, and the upper spur gear 12 and the lower spur gear 13 are arranged at intervals from the driving bevel gear 8. , And a gap is formed between the upper spur gear 12 and the lower spur gear 13, and the gap value is between 0.5 mm and 2 mm. In this embodiment, the gap value formed between the upper spur gear 12 and the lower spur gear 13 is 1 mm.
实施例二：Embodiment two:
请参阅图3至图5，本发明提供的,另一种实施例：一种带有双刀传动机构的电动剪刀，该电动剪刀包括电动剪刀壳体、设在电动剪刀壳体内的驱动组件以及设在电动剪刀壳体前端部的扳机组件和上述实施例一中的双刀传动机构，所述电动剪刀壳体的前端部与双刀传动机构的外壳组件固定连接，所述驱动机构由控制电路板19、电机20和减速机21构成，所述控制电路板19与电机20电性连接，所述电机20的输出端与减速机21的输入端固定连接，所述减速机21的输出端与双刀传动机构的主动伞齿8固定连接，所述扳机组件包括扳机本体22和霍尔板23，其中霍尔板23与控制电路板19电性连接，所述扳机本体22固定安装在外壳组件的下方位置，所述霍尔板23设置在外壳组件内部，所述扳机本体22上设置有第一磁铁24，且扳机本体22靠近第一磁铁24一端贯穿外壳组件，并延伸至外壳组件内部，所述霍尔板23上设置有与第一磁铁24相对应的第一霍尔25，且霍尔板23远离第一霍尔25一端设置有第二霍尔26，所述第二霍尔26与下刀片4上的第二磁铁27感应连接。Please refer to FIGS. 3 to 5, another embodiment provided by the present invention: an electric scissors with a double-knife transmission mechanism, the electric scissors including an electric scissors housing, a drive assembly arranged in the electric scissors housing, and The trigger assembly provided at the front end of the electric scissors housing and the double-blade transmission mechanism in the first embodiment, the front end of the electric scissors housing is fixedly connected with the housing assembly of the double-blade transmission mechanism, and the drive mechanism is controlled by a control circuit A board 19, a motor 20, and a reducer 21 are formed. The control circuit board 19 is electrically connected to the motor 20. The output end of the motor 20 is fixedly connected to the input end of the reducer 21, and the output end of the reducer 21 is connected to the The active umbrella teeth 8 of the double-blade transmission mechanism are fixedly connected, the trigger assembly includes a trigger body 22 and a Hall plate 23, wherein the Hall plate 23 is electrically connected to the control circuit board 19, and the trigger body 22 is fixedly installed on the housing assembly In the lower position of, the Hall plate 23 is arranged inside the housing assembly, the trigger body 22 is provided with a first magnet 24, and one end of the trigger body 22 close to the first magnet 24 penetrates the housing assembly and extends into the housing assembly. The Hall plate 23 is provided with a first Hall 25 corresponding to the first magnet 24, and an end of the Hall plate 23 away from the first Hall 25 is provided with a second Hall 26, the second Hall 26 It is inductively connected with the second magnet 27 on the lower blade 4.
所述电动剪刀还包括供电端口28，所述供电端口28设置在电动剪刀壳体末端位置，且供电端口28一端贯穿电动剪刀壳体并与电动剪刀壳体内的控制电路板19电性连接，另一端通过电源线连接市电。具体的，所述控制电路板19至少包括主控芯片29与主控芯片29电性连接的供电电路30和电机控制电路31，其中主控芯片29为单片机，其型号为XMC1302。The electric scissors further includes a power supply port 28, which is arranged at the end position of the electric scissors housing, and one end of the power supply port 28 penetrates the electric scissors housing and is electrically connected to the control circuit board 19 in the electric scissors housing. One end is connected to the mains through the power cord. Specifically, the control circuit board 19 includes at least a power supply circuit 30 and a motor control circuit 31 electrically connected to the main control chip 29 and the main control chip 29, wherein the main control chip 29 is a single-chip microcomputer, and its model is XMC1302.
具体的，所述霍尔板23上设置有霍尔控制电路32，所述霍尔控制电路32与主控芯片29通过串口通讯连接。Specifically, a Hall control circuit 32 is provided on the Hall board 23, and the Hall control circuit 32 is connected to the main control chip 29 through serial communication.
需要说明的是，在本实施例中电机20采用的是直流无刷电机。It should be noted that the motor 20 in this embodiment is a DC brushless motor.
请参阅图6至图9，图6中的U1为上述的主控芯片29；图7中的U2为电源管理芯片，其型号为XL6007，该电源管理芯片U2的3号引脚FB反馈阈值电压稳定在1.25V，由电阻R20与电阻R19的比率实现输出12V电压，当母线输入电压低于设定的12V电压值时，则该电源管理芯片U2对输入电压进行升压，实现输出12V电压，当母线输入电压高于12V时候，该电源管理芯片U2实现输入电压直出，该供电电路30给后端电路及主控芯片29供电；图8中 的U4为栅极驱动器，其型号为FD6288，当主控芯片U1的35号引脚接收到霍尔板23发来的需要启动的信号，即扳机被扣动，则主控芯片U1发出特定激励波形，其17、18、19、20、21和22号引脚经由栅极驱动器U4对3个半桥MOS管驱动，同时主控芯片U1通过6、36和37号引脚检测电机20反电动势的电压值，并通过电阻R31、电阻R30、电阻R43、电阻R41、电阻R44和电阻R42来确定电机20当前的位置，主控芯片U1根据电机20的6步方波驱动方式实现对电机20的驱动，当电机20速度高于一定值时，主控芯片U1的14、15和16号引脚采集比较器U5的输出信号，该信号是电机20运转过程中产生，可用于主控芯片U1控制电机20换向驱动的信号，电机20驱动过程中实时采样母线取样电阻R47上面的电压值，经过电阻R27、电阻R26、电容C18、电阻R25、电阻R24、电阻R23和电容C17连接到主控芯片U1的3号和5号引脚，主控芯片U1通过AD功能采集可计算当前驱动电流，实现对电机***控制的检测；图9中的霍尔控制电路32由电源通讯输入端口CON101、电阻R102、电阻R109、电容C101、电容C102、电容C103、电容C104、电容C107、扳机传感器U101、大口传感器U102、闭口传感器U105以及微控单元U104构成，其中微控单元U104的型号为PIC16F1704，扳机传感器U101、大口传感器U102和闭口传感器U105均采用型号为SS341RT的传感器，所述微控单元U104上还连接有烧写口P101。Please refer to Figures 6-9, U1 in Figure 6 is the above-mentioned main control chip 29; U2 in Figure 7 is a power management chip, its model is XL6007, the power management chip U2's No. 3 pin FB feedback threshold voltage Stable at 1.25V, the output voltage of 12V is achieved by the ratio of resistor R20 to resistor R19. When the bus input voltage is lower than the set 12V voltage value, the power management chip U2 boosts the input voltage to achieve an output voltage of 12V. When the bus input voltage is higher than 12V, the power management chip U2 realizes the direct output of the input voltage, and the power supply circuit 30 supplies power to the back-end circuit and the main control chip 29; U4 in Figure 8 is the gate driver, and its model is FD6288, When the 35th pin of the main control chip U1 receives the signal that needs to be started from the Hall board 23, that is, the trigger is pulled, the main control chip U1 sends out a specific excitation waveform, its 17, 18, 19, 20, 21 And 22 pins are driven by the gate driver U4 to the three half-bridge MOS transistors. At the same time, the main control chip U1 detects the voltage value of the back electromotive force of the motor 20 through the 6, 36 and 37 pins, and through the resistor R31, resistor R30, The resistance R43, the resistance R41, the resistance R44 and the resistance R42 determine the current position of the motor 20. The main control chip U1 drives the motor 20 according to the 6-step square wave driving mode of the motor 20. When the speed of the motor 20 is higher than a certain value, The 14th, 15th and 16th pins of the main control chip U1 collect the output signal of the comparator U5. This signal is generated during the operation of the motor 20 and can be used for the main control chip U1 to control the commutation driving signal of the motor 20, and the motor 20 drive process Real-time sampling of the voltage value on the bus sampling resistor R47, through resistor R27, resistor R26, capacitor C18, resistor R25, resistor R24, resistor R23 and capacitor C17 connected to the 3rd and 5th pins of the main control chip U1, the main control The chip U1 can calculate the current drive current through the AD function collection to realize the detection of the motor system control; the Hall control circuit 32 in Figure 9 is composed of the power communication input port CON101, resistor R102, resistor R109, capacitor C101, capacitor C102, and capacitor C103 , Capacitor C104, Capacitor C107, Trigger Sensor U101, Big Mouth Sensor U102, Closed Sensor U105, and Microcontrol Unit U104. Among them, the model of Microcontrol Unit U104 is PIC16F1704. Trigger Sensor U101, Big Mouth Sensor U102 and Closed Sensor U105 all adopt models as For the SS341RT sensor, the micro-control unit U104 is also connected with a programming port P101.
本发明中的电动剪刀在剪切时，先扣动扳机本体22，霍尔板23上的第一霍尔25感应到扳机本体22上的第一磁铁24的磁场，并给上刀片3和下刀片4提供剪切指令，当控制电路板19上的主控芯片29检测到扳机本体22触发时，驱动电机20正转，并通过减速机21将电机20扭矩放大，最后将放大的扭矩传递给双刀传动机构上的主动伞齿8，主动伞齿8将扭矩传递给上从动伞齿9和下从动伞齿10，再由上从动伞齿9和下从动伞齿10上的上直齿轮12和下直齿轮13将扭矩传递给上刀片3和下刀片4，上刀片3和下刀片4以刀片轴5为中心旋转执行闭口动作，当控制电路板19上的主控芯片29检测到扳机本体22松开时，电机20反转，根据机械结构原理上刀片3和下刀片4以刀片轴5为中心旋转执行开口动作，直至第二霍尔26检测到下刀片4上的第二磁铁27的磁场时，电机20停止工作，完成一次剪切动作。When the electric scissors in the present invention cut, first pull the trigger body 22, the first Hall 25 on the Hall plate 23 senses the magnetic field of the first magnet 24 on the trigger body 22, and feeds the upper blade 3 and the lower blade 3 The blade 4 provides cutting instructions. When the main control chip 29 on the control circuit board 19 detects that the trigger body 22 is triggered, the drive motor 20 rotates forward, and the torque of the motor 20 is amplified by the reducer 21, and finally the amplified torque is transmitted to The driving bevel gear 8 on the double-blade transmission mechanism. The driving bevel gear 8 transmits the torque to the upper driven bevel gear 9 and the lower driven bevel gear 10, and then the upper driven bevel gear 9 and the lower driven bevel gear 10 The upper spur gear 12 and the lower spur gear 13 transmit torque to the upper blade 3 and the lower blade 4. The upper blade 3 and the lower blade 4 rotate around the blade shaft 5 to perform a closing action, when the main control chip 29 on the control circuit board 19 When it is detected that the trigger body 22 is released, the motor 20 reverses. According to the mechanical structure principle, the blade 3 and the lower blade 4 rotate around the blade shaft 5 to perform an opening action until the second Hall 26 detects the first on the lower blade 4 When the magnetic field of the two magnets 27, the motor 20 stops working and completes a shearing action.
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims (9)

  1. 一种双刀传动机构，包括外壳组件、设置在外壳组件前端部的刀片组件以及设置在外壳组件内的传动组件，其特征在于：所述外壳组件由上壳(1)和下壳(2)构成，所述刀片组件包括上刀片(3)和下刀片(4)，所述上刀片(3)和下刀片(4)通过刀片轴(5)连接呈剪刀状，且上刀片(3)和下刀片(4)末端分别设置有上刀片齿轮(6)和下刀片齿轮(7)，所述上刀片齿轮(6)和下刀片齿轮(7)的两侧分别设置有定位弹簧(14)，所述定位弹簧(14)远离上刀片齿轮(6)和下刀片齿轮(7)一端与外壳组件内壁限位连接，所述传动组件包括主动伞齿(8)以及设置在主动伞齿(8)上下两端并与主动伞齿(8)相啮合的上从动伞齿(9)和下从动伞齿(10)，所述上从动伞齿(9)和下从动伞齿(10)通过从动伞齿轴(11)连接，且上从动伞齿(9)和下从动伞齿(10)可沿从动伞齿轴(11)做相反方向的转动，所述上从动伞齿(9)上钢性连接有上直齿轮(12)，所述下从动伞齿(10)上钢性连接有下直齿轮(13)，所述上直齿轮(12)和下直齿轮(13)分别与上刀片齿轮(6)和下刀片齿轮(7)相啮合。A double-knife transmission mechanism, comprising a housing assembly, a blade assembly arranged at the front end of the housing assembly, and a transmission assembly arranged in the housing assembly, characterized in that the housing assembly consists of an upper shell (1) and a lower shell (2) The blade assembly includes an upper blade (3) and a lower blade (4). The upper blade (3) and the lower blade (4) are connected in a scissors shape by a blade shaft (5), and the upper blade (3) and An upper blade gear (6) and a lower blade gear (7) are respectively provided at the end of the lower blade (4), and positioning springs (14) are respectively provided on both sides of the upper blade gear (6) and the lower blade gear (7), One end of the positioning spring (14) away from the upper blade gear (6) and the lower blade gear (7) is connected with the inner wall of the housing assembly in a limit position. The transmission assembly includes an active bevel gear (8) and an active bevel gear (8). The upper driven bevel teeth (9) and the lower driven bevel teeth (10) at the upper and lower ends and meshed with the driving bevel teeth (8), the upper driven bevel teeth (9) and the lower driven bevel teeth (10) ) Is connected by the driven bevel gear shaft (11), and the upper driven bevel gear (9) and the lower driven bevel gear (10) can rotate in opposite directions along the driven bevel gear shaft (11). The upper spur gear (12) is rigidly connected to the movable bevel gear (9), the lower spur gear (13) is rigidly connected to the lower driven bevel tooth (10), the upper spur gear (12) and the lower spur gear (13) are rigidly connected to the upper The spur gear (13) meshes with the upper blade gear (6) and the lower blade gear (7) respectively.
  2. 根据权利要求1所述的一种双刀传动机构，其特征在于：所述上壳(1)和下壳(2)内侧均设置有滑槽(15)，所述上从动伞齿(9)和下从动伞齿(10)远离上直齿轮(12)和下直齿轮(13)一端面均设置有与滑槽(15)相适配的滑轨(16)，所述滑轨(16)呈圆环状。The double-knife transmission mechanism according to claim 1, characterized in that: the inner sides of the upper shell (1) and the lower shell (2) are both provided with sliding grooves (15), and the upper driven umbrella teeth (9) ) And the lower driven bevel gear (10) far away from the upper spur gear (12) and the lower spur gear (13) are provided with slide rails (16) that are adapted to the slide grooves (15), and the slide rails ( 16) It has a circular ring shape.
  3. 根据权利要求1所述的一种双刀传动机构，其特征在于：所述刀片轴(5)远离上刀片(3)一端贯穿下壳(2)后与下壳(2)上的齿纹螺帽(17)螺纹连接，所述下壳(2)上位于齿纹螺帽(17)一侧设置有齿纹螺丝(18)，所述齿纹螺帽(17)上的齿纹与齿纹螺丝(18)上的齿纹相啮合。A double-knife transmission mechanism according to claim 1, characterized in that: the blade shaft (5) is far away from the upper blade (3) and penetrates through the lower shell (2) with the toothed screw on the lower shell (2). The cap (17) is threadedly connected, the lower shell (2) is provided with a toothed screw (18) on one side of the toothed nut (17), and the toothed and toothed patterns on the toothed nut (17) The teeth on the screw (18) mesh with each other.
  4. 根据权利要求1所述的一种双刀传动机构，其特征在于：所述主动伞齿(8)为锥形齿，且主动伞齿(8)远离上从动伞齿(9)和下从动伞齿(10)一端贯穿外壳组件并延伸至外壳组件外侧。A double-blade transmission mechanism according to claim 1, characterized in that: the driving bevel teeth (8) are tapered teeth, and the driving bevel teeth (8) are far away from the upper driven bevel teeth (9) and the lower follower teeth. One end of the movable umbrella tooth (10) penetrates the shell assembly and extends to the outside of the shell assembly.
  5. 根据权利要求1所述的一种双刀传动机构，其特征在于：所述上从动伞齿(9)、下从动伞齿(10)、上直齿轮(12)和下直齿轮(13)同轴设置，所述上直齿轮(12)和下直齿轮(13)与主动伞齿(8)间隔设置，且上直齿轮(12)和下直齿轮(13)之间形成有间隙，该间隙值在0.5mm-2mm之间。A double-blade transmission mechanism according to claim 1, characterized in that: the upper driven bevel gear (9), the lower driven bevel gear (10), the upper spur gear (12) and the lower spur gear (13) ) Are arranged coaxially, the upper spur gear (12) and the lower spur gear (13) are spaced apart from the driving bevel gear (8), and a gap is formed between the upper spur gear (12) and the lower spur gear (13), The gap value is between 0.5mm-2mm.
  6. 一种带有双刀传动机构的电动剪刀，其特征在于：包括电动剪刀壳体、设在电动剪刀壳体内的驱动组件以及设在电动剪刀壳体前端部的扳机组件和上述权利要求1-5之一的双刀传动机构，所述电动剪刀壳体的前端部与双刀传动机构的外壳组件固定连接，所述驱动机构由控制电路板(19)、电机(20)和减速机(21)构成，所述控制电路板(19)与电机(20)电性连接，所述电机(20)的输出端与减速机(21)的输入端固定连接，所述减速机(21)的输出端与双刀传动机构的主动伞齿(8)固定连接，所述扳机组件包括扳机本体(22)和霍尔板(23)，其中霍尔板(23)与控制电路板(19)电性连接，所述扳机本体(22)固定安装在外壳组件的下方位置，所述霍尔板(23)设置在外壳组件内部，所述扳机本体(22)上设置有第一磁铁(24)，且扳机本体(22)靠近第一磁铁(24)一端贯穿外壳组件，并延伸至外壳组件内部，所述霍尔板(23)上设置有与第一磁铁(24)相对应的第一霍尔(25)，且霍尔板(23)远离第一霍尔(25)一端设置有第二霍尔(26)，所述第二霍尔(26)与下刀片(4)上的第二磁铁(27)感应连接。An electric scissors with a double-knife transmission mechanism, characterized in that it comprises an electric scissors housing, a drive assembly arranged in the electric scissors housing, a trigger assembly arranged at the front end of the electric scissors housing, and the above claims 1-5 One of the double-blade transmission mechanism, the front end of the electric scissors housing is fixedly connected with the housing assembly of the double-blade transmission mechanism, and the drive mechanism is composed of a control circuit board (19), a motor (20) and a reducer (21) The control circuit board (19) is electrically connected to the motor (20), the output end of the motor (20) is fixedly connected to the input end of the reducer (21), and the output end of the reducer (21) Fixedly connected with the active umbrella teeth (8) of the double-blade transmission mechanism, the trigger assembly includes a trigger body (22) and a Hall plate (23), wherein the Hall plate (23) is electrically connected to the control circuit board (19) , The trigger body (22) is fixedly installed below the housing assembly, the Hall plate (23) is arranged inside the housing assembly, the trigger body (22) is provided with a first magnet (24), and the trigger One end of the body (22) close to the first magnet (24) penetrates the housing assembly and extends to the inside of the housing assembly. The Hall plate (23) is provided with a first Hall (25) corresponding to the first magnet (24). ), and an end of the Hall plate (23) away from the first Hall (25) is provided with a second Hall (26). The second Hall (26) is connected to the second magnet (27) on the lower blade (4). ) Inductive connection.
  7. 根据权利要求6所述的一种带有双刀传动机构的电动剪刀，其特征在于：还包括供电端口(28)，所述供电端口(28)设置在电动剪刀壳体末端位置，且供电端口(28)一端贯穿电动剪刀壳体并与电动剪刀壳体内的控制电路板(19)电性连接，另一端通过电源线连接市电。The electric scissors with a double-knife transmission mechanism according to claim 6, characterized in that it further comprises a power supply port (28), the power supply port (28) is arranged at the end position of the electric scissors housing, and the power supply port (28) One end penetrates the shell of the electric scissors and is electrically connected to the control circuit board (19) in the shell of the electric scissors, and the other end is connected to the city power through a power cord.
  8. 根据权利要求6所述的一种带有双刀传动机构的电动剪刀，其特征在于：所述控制电路板(19)至少包括主控芯片(29)与主控芯片(29)电性连接的供电电路(30)和电机控制电路(31)，其中主控芯片(29)为单片机，其型号为XMC1302。The electric scissors with a double-knife transmission mechanism according to claim 6, characterized in that: the control circuit board (19) at least includes a main control chip (29) electrically connected to the main control chip (29) The power supply circuit (30) and the motor control circuit (31), wherein the main control chip (29) is a single-chip microcomputer, and its model is XMC1302.
  9. 根据权利要求6所述的一种带有双刀传动机构的电动剪刀，其特征在于：所述霍尔板(23)上设置有霍尔控制电路(32)，所述霍尔控制电路(32)与主控芯片(29)通过串口通讯连接，且霍尔控制电路(32)由电源通讯输入端口CON101、电阻R102、电阻R109、电容C101、电容C102、电容C103、电容C104、电容C107、扳机传感器U101、大口传感器U102、闭口传感器U105以及微控单元U104构成，所述微控单元U104上还连接有烧写口P101。The electric scissors with a double-knife transmission mechanism according to claim 6, characterized in that: the Hall plate (23) is provided with a Hall control circuit (32), and the Hall control circuit (32) ) Is connected with the main control chip (29) through serial communication, and the Hall control circuit (32) is connected by the power communication input port CON101, resistor R102, resistor R109, capacitor C101, capacitor C102, capacitor C103, capacitor C104, capacitor C107, trigger The sensor U101, the large-mouth sensor U102, the closed-mouth sensor U105, and the micro-control unit U104 are constituted. The micro-control unit U104 is also connected with a programming port P101.
PCT/CN2020/116345 2020-05-17 2020-09-19 Dual blade transmission mechanism and electric shears having said dual blade transmission mechanism WO2021232642A1 (en)

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