WO2020073880A1 - Ciseaux électriques - Google Patents

Ciseaux électriques Download PDF

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Publication number
WO2020073880A1
WO2020073880A1 PCT/CN2019/109872 CN2019109872W WO2020073880A1 WO 2020073880 A1 WO2020073880 A1 WO 2020073880A1 CN 2019109872 W CN2019109872 W CN 2019109872W WO 2020073880 A1 WO2020073880 A1 WO 2020073880A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
handle
rear end
rod
hole
Prior art date
Application number
PCT/CN2019/109872
Other languages
English (en)
Chinese (zh)
Inventor
李爱良
王健民
Original Assignee
宁波伊司达环保机械股份有限公司
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 宁波伊司达环保机械股份有限公司 filed Critical 宁波伊司达环保机械股份有限公司
Publication of WO2020073880A1 publication Critical patent/WO2020073880A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B15/00—Hand-held shears with motor-driven blades
    • 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

Definitions

  • the invention relates to a scissors structure in a cutting tool, in particular to an electric scissors.
  • the large-blade scissors sold on the market are all used manually, that is, a pair of blades that intersect with an X-shaped manual grip and open and close the shearing scissors.
  • This scissors is very laborious when cutting hard materials. After a long period of use, the tiger's mouth will be very sore.
  • a structure of electric scissors which mainly includes a handle, a rocker arm on the handle, a blade assembly at the front of the handle, and a control circuit board, a micro switch and a motor which are located in the handle and are electrically connected, and the motor shaft of the motor is provided
  • a reduction gear box among them, the blade assembly has a fixed blade and a movable blade, a pull rod assembly is provided between the reduction gear box and the movable blade, and the pull rod assembly is driven by the reduction gear box to axially reciprocate when in use, thereby driving the movable blade and the fixed blade
  • the blades form an opening and closing shearing fit, so some hard paper and shrub branches can be easily cut.
  • the electric scissors are generally suitable for small knife-edge scissors, and due to the connection structure of the rod assembly, the front blade assembly can not be used for angular rotation relative to the handle. , That is, none of the above electric scissors can adjust the direction of the blade at will, which brings inconvenience to the use in some special occasions.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a blade assembly capable of flexibly rotating relative to the handle, that is, an electric scissors that realizes flexible adjustment of the direction of the blade.
  • An electric scissors includes a handle, a rocker arm on the handle, a blade assembly at the front of the handle, and a control circuit board, a micro switch and a motor located in the handle and connected in a circuit, the motor shaft of the motor is provided with a reduction gear box
  • the blade assembly has a fixed blade and a movable blade; a rod assembly is provided between the reduction gear box and the movable blade, and the reduction gear box drives the rod assembly to reciprocate axially, thereby driving the movable blade and the fixed
  • the blade forms an open-close shearing fit, and the rear end of the blade assembly is rotatably installed at the front of the handle;
  • the drawbar assembly includes a reciprocating rod and a drawbar, and the rear end of the reciprocating rod and the reduction gear box form a power transmission fit, and The end is rotatably mounted on the front end of the reciprocating rod, and the front end of the pull rod is connected to the movable blade; the blade assembly rotates relative to the handle freely, and the
  • the power transmission coordination structure of the rear end of the reciprocating lever and the reduction gear box is provided with a turntable on the output shaft of the reduction gear box, and the turntable is provided with an eccentric shaft and a roller rotating around the eccentric shaft, corresponding to the reciprocating lever
  • the rear end is provided with a lateral hole, and the roller is arranged in the lateral hole, and is reciprocated in the lateral hole by the eccentric rotation of the reduction gear box, thereby driving the axial reciprocating movement of the reciprocating rod.
  • the rear end of the reciprocating rod is provided with a horizontal plate, the horizontal hole is provided on the horizontal plate, and the axis of the horizontal hole is perpendicular to the axis of the reciprocating rod.
  • the lateral plates are respectively provided with sliding grooves on both sides, and the lateral plate guide sliding is installed between the two sliding grooves.
  • a magnetic block is arranged at the lower end of the roller, and a Hall circuit board is arranged below the magnetic block, and the Hall circuit board is connected with the control circuit board in signal.
  • the rotating installation structure of the rear end of the draw rod and the front end of the reciprocating rod is provided with a side hole at the front end of the reciprocating rod, and a nut for plugging and fixing is provided in the side hole, and a threaded shaft is provided at the rear end of the draw rod, The front end of the reciprocating rod and the nut form a screw rotation connection.
  • the front end of the pull rod is provided with a connecting post, and the rear end of the movable blade is provided with a connecting hole for fitting the connecting post.
  • the blade assembly includes a lower cover, a fixed blade whose rear end is fixedly installed on the lower cover, a movable blade provided on the fixed blade, and a cover connected to the lower cover and closing the rear ends of the fixed blade and the movable blade
  • the upper cover of the blade is provided with a blade spring and a blade positioning plate pushed by the blade spring between the upper cover and the movable blade.
  • the blade positioning plate is provided with a positioning post, and the positioning post is pushed by the blade spring and fitted to the movable In the mounting hole at the back of the blade.
  • the rear end of the upper cover is provided with a hollow rotating shaft that extends backwards.
  • the hollow rotating shaft is rotatably installed in the front hole of the front of the handle, and the front end of the pull rod is connected to the movable blade through the hollow rotating shaft.
  • the handle is provided with a locking push button and a locking micro switch;
  • the front of the locking push button is provided with a clamping plate, and correspondingly, a plurality of circumferentially distributed cards are provided on the outer circumferential surface of the hollow rotating shaft Slot;
  • the locking micro switch is connected to the control circuit board, micro switch, and motor as a circuit;
  • the locking push button moves forward and controls the locking micro switch to energize the circuit, and the card board is engaged In the card slot, the rotation of the hollow rotating shaft in the front hole is restricted or the locking push button is moved backward and the locking micro switch is controlled to de-energize the circuit.
  • the card board is separated from the card slot, and the hollow rotating shaft rotates in the front hole.
  • the top surface of the handle is provided with a safety lock push button for opening and closing the micro switch, and the side of the handle is provided with a self-locking push button for controlling the pressing of the rocker arm.
  • the present invention mainly installs the rear end of the blade assembly at the front of the handle, and further comprises the reciprocating rod and the reciprocating rod connected to each other.
  • the rod assembly can ensure the axial reciprocating movement and drive the movable blade and the fixed blade to form an open-close shear cooperation, and can also follow the rotation of the blade assembly to rotate, thereby realizing the blade of the electric scissors
  • the direction can be flexibly adjusted; therefore, the improved structure can be applied to scissors with large or small blades, and has the advantages of simple operation, labor saving and other advantages, and can be flexibly adjusted by the blade even in some special occasions. Rotating and easy to use.
  • FIG. 1 is an exploded view of the three-dimensional structure of the present invention.
  • FIG. 2 is a schematic cross-sectional view of the cooperation structure of the reduction gear box, the tie rod assembly and the blade assembly.
  • A. blade assembly 1. lower cover, 2. fixed blade, 3. movable blade, 31. mounting hole, 32. connection hole, 4. blade positioning plate, 41. positioning column, 5. Blade spring, 6. Upper cover, 61. Hollow shaft, 611. Card slot, B. Tie rod assembly, 7. Tie rod, 71. Connecting column, 72. Threaded shaft, 8. Nut, 9. Reciprocating rod, 91. Side hole, 92. Horizontal hole, 10. Oil bearing, 11. Chute, 12. Hall circuit board, 13. Magnetic block, 14. Roller, 15. Eccentric shaft, 16. Turntable, 17. Reduction gear box, 18 .Motor, 19. Handle, 191. Front hole, 20. Safety lock push button, 21. Micro switch, 22. Self-locking push button, 23.
  • Self-locking spring 24. Rocker spring, 25. Battery, 26. Control circuit board, 27. rocker arm, 28. positioning cover, 29. locking spring, 30. locking push button, 301. lever, 302. card board, 303. limit block, 33. locking micro switch .
  • An electric scissors as shown in FIG. 1, belongs to a large-blade electric scissors, which can be widely used for cutting branches, grass or paper.
  • the left side of the view of the present invention is used as the rear part of the electric scissors according to FIG. 1, and the right side of the view The side is described as the front of the electric scissors.
  • Its structure is mainly composed of the handle 19, the rocker arm 27 on the handle, the blade assembly A at the front of the handle, and the control circuit board 26, battery 25, and control circuit board 26 in the handle 19
  • the micro switch 21, the motor 18, the Hall circuit board 12, the reduction gear box 17 and the drawbar assembly B are composed of the above.
  • the blade assembly A has a fixed blade 2 and a movable blade 3.
  • the handle 19 is a hollow part formed by the left shell and the right shell interlocked with each other and connected and fixed by a plurality of screws.
  • the shape is a horizontal 7-shaped shape, and the 7-shaped long handle is used for hand holding
  • the grip has anti-slip patterns on the top surface to improve grip and anti-slip performance.
  • the rocker arm 27 is arranged on the bottom surface of the handle, and one end is hingedly rotated, and the other end is elastically pushed by a built-in rocker spring 24 to form a convex portion that pops out; when holding the handle and squeezing fingers, the rocker arm is pressed When the convex portion of 27 is retracted inward, it can touch and open the micro switch 21 on the control circuit board 26 in the handle 19, and put the electric scissors into work, otherwise the rocker spring 24 pushes the rocker 27 The raised portion of the reset is disengaged and closes the micro switch 21 on the control circuit board 26.
  • the side of the handle is provided with a self-locking push button 22, which is a horizontal push-pull moving part, which can be used to control the pressing operation of the rocker arm 27, that is, pressing the self-locking push button 22 inwardly will restrict the In the pressing operation, the self-locking push button 22 can be extended outward to release the pressing operation of the rocker arm 27.
  • the operation of the self-locking push button 22 is also reset by the elastic pushing of the self-locking spring 23.
  • the top surface of the handle is provided with a safety lock push button 20, which can be used to open and close the micro switch 21, and the safety lock push button 20 is to open or close the micro switch 21 normally open or normal Close, that is, control the power-off function and power-on function of the motor 18, that is, when the front and back push of the safety lock push button 20 can contact or disengage the micro switch 21, the rocker 27 can be pressed to activate the micro switch 21, or even The pressing of the rocker arm 27 cannot activate the micro switch 21, so the safety lock push button 20 also serves as a safety insurance.
  • the control circuit board 26, the battery 25, the micro switch 21 and the motor 18 are connected by a built-in wire as a circuit to form a complete control circuit; wherein, the motor 18 is vertically installed under the motor axis, and the motor A reduction gearbox 17 is provided on the shaft for power output reduction.
  • the output shaft of the reduction gearbox 17 is provided with a circular turntable 16, an eccentric shaft 15 and a roller 14 rotating around the eccentric shaft are provided outside the bottom surface of the turntable.
  • the lower end of the roller is provided with a magnetic block 13 embedded and fixed, and a Hall circuit board 12 disposed under the magnetic block and forming a control coordination with the magnetic block 13, the Hall circuit board and the control circuit board 26 are in signal connection, specifically
  • the structure is: when the magnetic block 13 follows the roller 14, it will form an induction with the Hall circuit board 12, usually a reciprocating induction is formed between the two induction points on the Hall circuit board 12, and then the control circuit board connected by the signal 26 to control the intermittent forward and reverse rotation of the motor 18.
  • the drawbar assembly B is disposed between the reduction gear box 17 and the movable blade 3, and includes a reciprocating rod 9 and a drawbar 7.
  • the rear end of the reciprocating rod 9 and the reduction gearbox 17 form a power transmission fit, and the specific structure is: a reciprocating rod 9
  • the rear end is provided with a horizontally placed horizontal plate, and the horizontal plate is provided with a horizontal hole 92 penetrating upward and downward, or a horizontal groove, the axis line of the horizontal hole 92 and the axis line of the reciprocating rod 9 Vertical;
  • the roller 14 is set in the horizontal hole 92, and the sliding groove 11 is provided on both sides of the horizontal plate; therefore, the motor 18 drives the turntable 16 through the reduction gear box 17 to rotate, which can drive the eccentric
  • the roller 14 on the shaft 15 rotates eccentrically.
  • the roller 14 Since the roller 14 is built in the lateral hole 92 and the two sides of the lateral plate are limited by the sliding of the two sliding grooves 11, the eccentric rotation of the roller 14 is converted to The reciprocating movement in the transverse hole 92 makes the transverse plate form a guide sliding along the two sliding grooves 11, that is, the eccentric rotation is converted into the axial reciprocating movement of the reciprocating rod 9.
  • the reciprocating rod 9 is provided with an oil bearing 10 in the middle to support the reliability of the reciprocating movement.
  • the rear end of the pull rod 7 is rotatably installed at the front end of the reciprocating rod 9.
  • the specific structure is: a side hole 91 is provided at the front end of the reciprocating rod 9.
  • a nut 8 for plugging and fixing is provided in the side hole.
  • the threaded shaft 72 passes through the front end of the reciprocating rod 9 and forms a threaded rotation connection with the nut 8. Therefore, the reciprocating rod 9 can drive the pull rod 7 to reciprocate in the axial direction, and the pull rod 7 can also rotate relative to the reciprocating rod 9.
  • the rear end of the pull rod 7 and the front end of the reciprocating rod 9 can also be rotationally connected through a rotationally coupled connecting shaft and connecting hole, and this structure can also achieve movement and relative rotation;
  • the front end of the pull rod 7 is provided with a connecting post 71, and is connected to the rear end of the movable blade 3 through the connecting post.
  • the blade assembly A is composed of a lower cover 1, a fixed blade 2, a movable blade 3 and an upper cover 6 in order from bottom to top.
  • the rear end of the fixed blade 2 is fixedly installed on the lower cover 1, and the movable blade 3 is set on the fixed blade 2, and the upper cover 6 is connected to the lower cover 1 and closes the rear ends of the fixed blade 2 and the movable blade 3; at the same time, between the upper cover 6 and the movable blade 3
  • the blade spring 5 and the blade positioning plate 4 pushed by the blade spring contact the movable blade 3, and the blade positioning plate is provided with a positioning column 41, then the blade spring 5 pushes the blade positioning plate 4 to drive the positioning column 41 to be fitted in the activity
  • the mounting hole 31 at the rear end of the blade 3 forms an open-close shearing fit of the movable blade 3 relative to the fixed blade 2.
  • the rear end of the upper cover 6 is provided with a hollow rotating shaft 61 that extends backward, and the hollow rotating shaft is rotatably installed in the front hole 191 at the front of the handle 19, that is, the entire rear end of the blade assembly A can be rotatably installed at the front of the handle 19
  • a plurality of circumferentially distributed clamping grooves 611 are provided, and the front end of the pull rod 7 can directly pass through the hollow rotating shaft 61, and is connected to the connecting hole 32 at the rear end of the movable blade 3 through the connecting column 71 , Thereby providing power transmission for the movement of the movable blade 3.
  • the handle 19 is also provided with a positioning cover 28, a locking spring 29, a locking push button 30 and a locking micro switch 33, the locking micro switch 33 and the control circuit board 26, the micro switch 21, the motor 18 Make circuit connection and become one of the electronic components of the complete control circuit.
  • the locking push button 30 is provided with a conjoined clamping board 302 at the front, an upward extending lever 301 at the top, a positioning cover 28 is provided on the rear side of the locking push button 30, and a locking spring 29 is provided on the positioning cover 28 and the lock push button 30, so the lock spring 30 is always pushed forward by the lock spring 29 under normal conditions, so the lock push button 30 in this structure state moves forward Under the action of the trend, the lever 301 will release and lock the micro switch 33, that is, the normally closed switch energizes the circuit, and also pushes the card board 302 to be engaged in the card slot 611, thereby restricting the hollow shaft 61 in the front hole 191 Rotate; when pushing the locking push button 30 backward to overcome the elastic force of the locking spring 29 and move backward, the lever 301 will open the locking micro switch 33 to power off the circuit, and the card board 302 is also at the same time When it is disengaged from the locking groove 611, the hollow rotating shaft 61 can freely rotate in the front hole 191.
  • one side of the locking push button 30 is also provided with a limiting block 303, which functions to limit the rotation of the locking push button 30 during operation, that is, to always ensure the forward and backward sliding movement of the locking push button 30.
  • the purpose of the above structure is to ensure that the blade assembly A can rotate 360 degrees relative to the handle 19, the entire control circuit is in a power-off state, and when the entire control circuit is powered on, the blade assembly A cannot operate with respect to the handle 19 360 degree free rotation; that is, the blade assembly A can flexibly rotate when the control circuit is powered off, and the blade assembly A cannot flexibly rotate when the control circuit is energized, thereby ensuring the safety of use when the blade direction of the electric scissors is flexibly adjusted to prevent The occurrence of accidental injuries.

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

Abstract

Cette invention concerne une paire de ciseaux électriques, comprenant : un manche (19), un bras oscillant (27), un ensemble lame (A) sur la partie avant du manche, ainsi qu'une carte de circuit imprimé de commande (26), un micro-rupteur (21), un moteur (18) et un ensemble bielle de commande (B) à l'intérieur du manche. L'extrémité arrière de l'ensemble lame est agencée de façon rotative sur la partie avant du manche. L'ensemble bielle de commande est composé d'un levier à va-et-vient (9) et d'une bielle de commande (7) reliés en rotation l'un à l'autre. Lorsque l'ensemble lame tourne librement par rapport au manche, la bielle de commande peut tourner librement par rapport au levier à va-et-vient, c'est-à-dire que tandis que l'ensemble bielle de commande garantit un mouvement de va-et-vient axial et entraîne une lame mobile et une lame fixe de l'ensemble lame pour effectuer un découpage par ouverture et fermeture, l'ensemble bielle de commande peut tourner après la rotation de l'ensemble lame de telle sorte qu'une direction de point de coupe des ciseaux électriques puisse être ajustée de manière flexible. La structure améliorée peut être adaptée à des ciseaux ayant un grand point de coupe ou un petit point de coupe, et présente les avantages d'un fonctionnement simple, d'une économie d'effort lors du découpage, et d'un ajustement flexible en rotation.
PCT/CN2019/109872 2018-10-11 2019-10-08 Ciseaux électriques WO2020073880A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811181513.1A CN109176609A (zh) 2018-10-11 2018-10-11 一种电动剪刀
CN201811181513.1 2018-10-11

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Publication Number Publication Date
WO2020073880A1 true WO2020073880A1 (fr) 2020-04-16

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PCT/CN2019/109872 WO2020073880A1 (fr) 2018-10-11 2019-10-08 Ciseaux électriques

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CN (1) CN109176609A (fr)
WO (1) WO2020073880A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11766792B2 (en) 2020-09-10 2023-09-26 Techtronic Cordless Gp Blade change mechanism for power tool

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US5067375A (en) * 1990-11-15 1991-11-26 Ideal Industries, Inc. Power operated wire stripper
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US20130000130A1 (en) * 2011-06-28 2013-01-03 Max Co., Ltd. Electric scissors
US20150283714A1 (en) * 2014-04-08 2015-10-08 Terry Sandefur Cutting Apparatus
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787742A (en) * 1972-03-07 1974-01-22 Arvin Ind Inc Electric shears
US5067375A (en) * 1990-11-15 1991-11-26 Ideal Industries, Inc. Power operated wire stripper
CN102131381A (zh) * 2008-08-26 2011-07-20 佩朗股份有限公司 具有两个轴的机械化便携式电动工具
US20130000130A1 (en) * 2011-06-28 2013-01-03 Max Co., Ltd. Electric scissors
CN108380965A (zh) * 2013-04-04 2018-08-10 米沃奇电动工具公司 电动工具
US20150283714A1 (en) * 2014-04-08 2015-10-08 Terry Sandefur Cutting Apparatus
CN205681887U (zh) * 2016-06-27 2016-11-16 济宁市凯金农业机械设备有限公司 一种高枝摘果器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11766792B2 (en) 2020-09-10 2023-09-26 Techtronic Cordless Gp Blade change mechanism for power tool

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