Electric scissors

a technology of electric scissors and blades, applied in the field of electric scissors, can solve the problems of large torque required as the blades are closed, deformation of the durability of the drive system, and application to the drive system, and achieve the effects of large cutting torque, large cutting torque, and increased cutting for

Inactive Publication Date: 2010-08-05
MAX CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016]According to the electric scissors having the above structure, when the drive shaft is displaced in the direction of increasing the angle formed by the first link and the second link of the toggle link mechanism, the connection of the first link and the second link being bent at the drive shaft serving as a fulcrum, the first blade and the second blade are closed while being rotated around the shaft serving as a fulcrum. As the angle formed by the first link and the second link of the toggle link mechanism is increased and the first blade and the second blade are closed, a generated cutting force increases. As a result, a large cutting torque can be generated in the latter half of the closing operation of the first blade and the second blade.
[0017]According to the...

Problems solved by technology

However, a large torque is required as the blades are closed.
Hence, a load applied to the drive system, such as the ball screw mechanism, becomes large, and the durability of the drive system is degraded.
Consequently, although the electric scissors are used as a tool held in the hand, it is difficult to make the electric scissors light in weight, and ...

Method used

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Examples

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first exemplary embodiment

A Configuration Example of Electric Scissors

[0029]FIGS. 1 and 2 are side sectional views showing a configuration example of electric scissors according to a first exemplary embodiment. FIG. 1 shows a state in which the blades thereof are opened, and FIG. 2 shows a state in which the blades are closed.

[0030]In electric scissors 1A according to the first exemplary embodiment, a first movable blade 2A and a second movable blade 3A are rotatably supported by a shaft 4A serving as a fulcrum.

[0031]In the electric scissors 1A, the rotation of a motor 5 is converted into a linear motion using a ball screw mechanism 6, and the drive power of the motor 5, the rotation of which is converted into a linear motion, is transmitted to the first movable blade 2A and the second movable blade 3A using a toggle link mechanism 7A. As a result, the first movable blade 2A and the second movable blade 3A are rotated around the shaft 4A serving as a fulcrum, thereby being opened / closed.

[0032]In the electric...

second exemplary embodiment

A Configuration Example of Electric Scissors

[0071]FIGS. 4 and 5 are side sectional views showing a configuration example of electric scissors according to a second exemplary embodiment; FIG. 4 shows a state in which the blades thereof are opened, and FIG. 5 shows a state in which the blades are closed. In FIGS. 4 and 5, mechanisms for driving one of the blades of the electric scissors are shown, and the housing, the operation section, etc. thereof are not shown.

[0072]Electric scissors 1B according to the second exemplary embodiment have a movable blade 2B and a fixed blade 3B, and the movable blade 2B is rotatably supported by a shaft 4B serving as a fulcrum.

[0073]In the electric scissors 1B, the rotation of a motor 5 is converted into a linear motion using a ball screw mechanism 6, and the drive power of the motor 5, the rotation of which is converted into a linear motion, is transmitted to the movable blade 2B using a toggle link mechanism 7B. As a result, the movable blade 2B is ...

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PUM

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Abstract

Electric scissors (1A, 1B) is provided with: a first blade (2A, 2B); a second blade (3A, 3B); a toggle link mechanism (7A, 7B) including a first link (71A, 71B), a second link (72A, 72B), and a drive shaft (70A, 70B); and a drive section (5, 6). One end of the first link (71A, 71B) is rotatably connected to a transmission portion (21A, 21B) of the first blade (2A, 2B). One end of the second link (72A, 72B) is rotatably connected to a transmission portion (31A, 31B) of the second blade (3A, 3B). The other end of the first link (71A, 71B) is rotatably connected to the other end of the second link (72A, 72B) through the drive shaft (70A, 70B). The drive section (5, 6) is configured to open/close the first blade (2A, 2B) and the second blade (3A, 3B) by displacing the drive shaft (70A, 70B) in a direction perpendicular to an axial direction of the drive shaft (70A, 70B).

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to electric scissors, used to prune branches of trees or the like, for cutting objects to be cut, such as the branches, by opening and closing the blades using a drive power of a motor.[0003]2. Background Art[0004]Conventionally, branches or the like have been pruned with scissors by opening / closing blades of scissors with a hand of the user. However, for the purpose of saving labor of this work, electric scissors are proposed that can cut objects to be cut, such as the branches, by opening / closing the blades using a drive power of a motor.[0005]Such electric scissors include a fixed blade and a movable blade being rotatable around a shaft serving as a fulcrum. A configuration referred to as a link type and a configuration referred to as a gear type are known as the configurations of systems for driving the movable blade.[0006]Link-type electric scissors are configured so that the movable b...

Claims

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Application Information

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IPC IPC(8): A01G3/037B26B15/00B26B13/26
CPCA01G3/037A01G3/08B26B15/00
Inventor ISHIGURO, HIROKI
Owner MAX CO LTD
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