JP2009039034A - Electric scissors - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electric scissors which can prevent an operation not intended by a user and enhances safety, when used. <P>SOLUTION: The electric scissors 1 can be switched into a waiting state not opening or closing a blade portion 9 not interlocked with an opening or closing switch 8a having an opening position and a closing position for opening or closing the blade portion 9, or into an ordinary operation state interlocked with the opening or closing switch 8a to open or close the blade portion 9. The electric scissors are switched into the waiting state, when a main switch 6 having a starting position and a stopping position to start/stop the supply of a power source to the main body is placed at the starting position, or into the ordinary operation state, when the opening or closing switch 8a is placed at the stopping position for a prescribed time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric scissor that can cut a branch or the like by opening and closing a blade portion, and more particularly, to one that opens and closes a blade portion in conjunction with an operation of an open / close switch.

  Generally known electric scissors have a blade part consisting of one movable blade and one fixed blade, a trigger switch that operates the movable blade, and branches etc. by ON / OFF operation of the trigger switch Used for cutting. These electric scissors are sized so that an operator can operate with one hand, and a trigger switch is placed at a position where they can be operated with a finger when grasping the main body, and the blade is closed by pulling the trigger switch with a finger. The blade is opened by releasing your finger from the trigger switch.

  Such electric scissors are provided with safety measures so that the opening and closing of the blade portion does not interlock with the trigger switch as soon as the main switch is turned on. In this regard, the electric scissors described in Patent Document 1 are configured so that the blade is opened in conjunction with the trigger switch by the activation process in which the trigger switch is turned ON / OFF once after the main switch is turned ON and the power is supplied. It is in a usable state. However, after turning on the main switch, the user inadvertently puts his finger on the trigger switch when holding the electric scissors, and the startup process is performed unintentionally to make it usable. In some cases, the electric scissors are dropped, and the start-up process is performed unintentionally, making it usable, which is not a perfect safety measure.

Such electric scissors are used to turn off the main switch after closing the blade by turning off the trigger switch so that the blade does not remain open after the main switch is turned off. In this regard, the electric scissors described in Patent Document 1 improve convenience by automatically performing an end process for closing the blade portion before the power supply is ended by simply turning off the main switch. However, the user may turn off the main switch at any time, and the unintentional termination process may be performed, making it unusable, or if the trigger switch is turned off. However, the end process is performed by turning off the main switch, and the blade portion may be automatically closed, which is not safe.
JP 2005-52384 A

  Therefore, the problem to be solved by the present invention is to propose electric scissors that prevent an operation that is not intended by the user from being performed and improve safety during use.

  In order to solve such a problem, the present invention provides a blade portion having a plurality of blades that at least one of which opens and closes, and an open / close switch having an open position and a closed position to open and close the blade portion, In order to start / stop power supply to the main body, in the electric scissors comprising a main switch having a start position and a stop position, a standby state in which the blade portion does not open and close without being linked to the open / close switch; A normal operation state in which the blade portion opens and closes in conjunction with the open / close switch, and enters the standby state by setting the main switch to a start position, and after the open / close switch is closed for a predetermined time, the normal operation state We propose electric scissors characterized by a shift to

  Further, in the electric scissors having a blade portion having a plurality of blades that are opened and closed by at least one sheet and an open / close switch having an open position and a closed position for opening and closing the blade portion, the open / close switch is closed. Normally, the blade is closed, the open / close switch is set to the open position, the blade is opened, the standby state in which the blade does not open and close without being linked to the open / close switch, and the blade is normally opened or closed in conjunction with the open / close switch. The electric scissors are characterized in that the operating state can be taken, and in the normal operating state, the open / close switch is set to the closed position for a predetermined time, and then the state is shifted to the standby state with the blade portion closed.

  The lock switch further includes a guard body that encloses the open / close switch in an arch shape, and a lock switch that allows the open / close switch to be operated when the open position is set and the open / close switch cannot be operated when set to the fixed position. Was placed outside the area surrounded by the guard body.

  According to the first aspect of the invention, in order to shift the state of the electric scissors from the standby state to the normal operation state, it is necessary to keep the open / close switch in the closed position for a predetermined time, like the electric scissors described in the cited document 1. After the main switch is turned on and the power is supplied, the triggering switch is turned on / off only once and the activation process is not completed instantaneously. Therefore, the user has electric scissors after turning on the main switch. Occasionally, the trigger switch is inadvertently touched and the startup process is performed unintentionally, making it usable, or the electric scissors are dropped, and the startup process is performed unintentionally. To prevent it from being put into a usable state, and to avoid accidentally closing the blade and cutting a finger etc., and taking thorough safety measures at startup It can be.

  According to the invention described in claim 2, in order to shift the electric scissors from the normal operation state to the standby state, it is necessary to keep the open / close switch in the closed position for a predetermined time. Thus, the user can turn off the main switch at any time, close the blade part unintentionally and prevent it from becoming unusable, and close the blade part by mistake. Therefore, it is possible to make the use of electric scissors safer. Furthermore, since the electric scissors are in a standby state after closing the blade portion with the open / close switch in the closed position, the end processing is performed by turning off the main switch, like the electric scissors described in the cited document 1, Even if the trigger switch is turned off, the blade portion is automatically prevented from being closed, so that the finger or the like is not accidentally cut, and the electric scissors can be used more safely.

  Furthermore, according to the invention described in claim 3, since the guard body surrounds the open / close switch in an arch shape, like the electric scissors described in the cited document 1, the user can operate the electric switch after the main switch is turned on. Even if the scissors are dropped, the trigger switch is not turned on unintentionally. On the other hand, since the lock switch is arranged outside the guard body, even if something is caught in the area surrounded by the guard body, the lock switch is not unintentionally opened. As a result, the open / close switch is closed unintentionally and the lock switch is prevented from being opened, preventing accidental closing of the blade and cutting of fingers, etc., and the use of electric scissors. Can be safe.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG. The main components of the electric scissors 1 are a scissor body 2 and a control box 3. The scissors body 2 and the control box 3 are connected by a scissors body cable 4. With this scissor body cable 4, the control box 3 supplies power to the scissors body 2 and controls the scissors body 2 based on information sent from the scissors body 2. A main switch cable 5 extends from the control box 3 separately from the scissors body cable 4, and a main switch 6 is attached to the end of the main switch cable 5. The electric scissors 1 are activated when the main switch 6 is set to the start position, and are started when the main switch 6 is set to the end position. When using the electric scissors 1, the user holds the scissors body 2 with the right hand, the main switch 6 with the left hand, and puts the control box 3 in a dedicated vest and carries the work. Hereinafter, the scissor body 2 and the control box 3 will be described in detail.

  First, the scissor body 2 will be described in detail. The scissors main body 2 is used in a state where the user grasps the grip 7 with his hand, puts his finger on the operation unit 8, and the blade unit 9 faces forward. As a result, the scissor body cable 4 extends in the backward direction of the user. Hereinafter, based on this use situation, each part of the scissors body 2 will be described in detail, assuming that the direction in which the operation unit 8 is present is down and the direction in which the blade part 9 is present is forward.

  First, the operation unit 8 of the scissor body 2 is a trigger switch that is an open / close switch. The trigger switch 8a has an open position and a closed position. By pulling this, the blade part 9 closes and branches. And the blade 9 is opened by releasing the trigger switch 8a to the open position. Reference numeral 8b surrounding the trigger switch 8a in an arch shape is a guard body, which prevents the trigger switch 8a from being pushed due to accidental dropping of the scissor body 2 or the like. A lock switch 8c behind the trigger switch 8a is a lock switch for mechanically locking the trigger switch 8a. The lock switch 8a has a fixed position and an open position. Unless the push switch is pushed to the open position, the trigger switch 8a is pulled to the closed position. You can't do that. Note that the lock switch 8c is arranged outside the area surrounded by the guard body 8b, but this is to prevent the trigger switch 8a and the lock switch 8c from being simultaneously pressed without permission. When using the electric scissors 1, the index finger is passed through the guard body 8b, the trigger switch 8a is pressed with the index finger, the lock switch 8c is pressed with the middle finger, and each is operated.

  Then, although it is the blade part 9 of the scissors main body 2, the blade part 9 consists of two blades, the upper blade 9a and the lower support 9b. A branch is cut | disconnected by pinching a branch between these and the upper blade 9a rock | fluctuating to an up-down direction. This mechanism will be described with reference to FIG. 2 showing the internal structure of the scissors body 2. Reference numeral 10 denotes a motor. When the motor 10 is driven to rotate, the screw shaft 11a of the ball screw 11 rotates, whereby the nut portion 11b of the ball screw 11 moves back and forth. The back-and-forth movement of the nut portion 11 b is transmitted to the arm portion 9 c of the upper blade 9 a connected by the link 12. As a result, the arm portion 9c of the upper blade 9a swings in the front-rear direction, so that the upper blade 9a swings in the vertical direction with the fulcrum portion 9d as a fulcrum. Whether the upper blade 9a is fully opened / closed is determined by the magnetic sensors 13 and 14 in the scissors body 2 detecting the magnet 11c attached to the nut portion 11b.

  When closing the blade portion 9, the motor 10 is rotated forward until the magnet 11c is detected by the magnetic sensor 13, and the nut portion 11b is moved backward. When the magnet 11c is detected by the magnetic sensor 13, the motor 10 is braked and stopped. Thereby, the opening degree of the blade part 9 is fully closed. On the other hand, when the blade portion 9 is opened, the motor 10 is reversed until the magnet 11c is detected by the magnetic sensor 14, and the nut portion 11b is moved forward. When the magnet 11c is detected by the magnetic sensor 14, the motor 10 is braked and stopped. Thereby, the opening degree of the blade part 9 is fully opened.

  After the detailed description of the scissors body 2 is completed, the control box 3 will be described in detail. In FIG. 1, the control box 3 carried by the user is depicted in front view from the rear of the user. A control board 3a is mounted on the upper portion of the control box 3, which receives an input signal of the trigger switch 8a and detection signals of the magnetic sensors 13 and 14, and based on these signals, controls the motor 10 with a scissor body. By sending it back to 2, the opening and closing of the blade portion 9 is controlled. A buzzer is attached to the control board 3a to notify the user of the state change of the electric scissors 1. On the other hand, a storage battery 3b is mounted below the control box 3, and the type of the storage battery 3b is a nickel-hydrogen battery. In addition, the control board 3a demonstrated previously performs the remaining capacity detection of the storage battery 3b, charge control, etc. Therefore, since electric power is supplied from the storage battery 3b, it is not necessary to receive electric power supply from a commercial power supply, and it is not necessary to route a power cable at the time of use.

  Hereinafter, a method of using the electric scissors 1 configured as described above will be described. The electric scissors 1 of the present invention can take two states, a standby state and a normal operation state. In the standby state, the blade portion 9 does not open and close without being interlocked with the trigger switch 8a. On the other hand, during the normal operation state, the blade portion 9 opens and closes in conjunction with the trigger switch 8a. It is assumed that the user puts the control box 3 in a dedicated vest and carries it, holding the scissor body 2 with the right hand, and holding the main switch 6 with the left hand.

  First, the starting process of the electric scissors 1 will be described with reference to FIG. At this time, the opening degree of the blade part 9 shall be fully closed. When the user pushes the main switch 6 held in the left hand to the start position (S1) and activates the electric scissors 1, a short buzzer sounds from the buzzer built in the control box 3. This is to inform the user that the electric scissors 1 have been activated. The user holds the lock switch 8c with the middle finger of the right hand and keeps the lock switch 8c in the open position, and continuously pulls the trigger switch 8a with the index finger of the right hand and keeps it in the closed position. Thus, after a predetermined time, for example, about 1 second, that is, at least a sufficient time for determining that the user has intentionally performed the starting operation has passed (S2), a long buzzer sounds. This is to inform the user that the electric scissors 1 have shifted from the standby state to the normal operation state. When the user releases the trigger switch 8a to the open position (S3), the blade part 9 opens and closes in conjunction with the trigger switch 8a (S4), and the opening degree of the blade part is fully closed (S5). Therefore, the blade 9 is opened (S6), and the opening of the blade 9 is eventually fully opened. Thereafter, the branches can be cut by the scissors body 2.

  Next, the termination process of the electric scissors 1 will be described with reference to FIG. The user holds the lock switch 8c with the middle finger of the right hand and keeps the lock switch 8c in the open position, and continuously pulls the trigger switch 8a with the index finger of the right hand and keeps it in the closed position. At this time, since the trigger switch 8a is pulled and kept in the closed position, the opening degree of the blade portion 9 is naturally fully closed (S7). In this way, after a predetermined time, for example, about 5 seconds, that is, a time sufficiently longer than the time taken to cut the branch has elapsed (S8), a short buzzer sounds. This is to inform the user that the electric scissors 1 have shifted from the normal operation state to the standby state. Thereafter, the blade portion 9 does not open and close without being interlocked with the trigger switch 8a (S9). Then, the user sets the main switch 6 to the end position (S10) and ends the electric scissors 1.

  By the way, the user does not pull the trigger switch 8a continuously for a predetermined time as in the above-described termination process, and keeps the main switch 6 in the normal operation state to end the electric scissors 1 without continuing the closed position. As a result, the opening degree of the blade portion 9 remains fully open. The behavior of the scissors body 2 in the starting process of the electric scissors 1 at this time is different from that in the starting process described above, and this will be described with reference to FIG. Up to the point where the main switch 6 is set to the start position (S1) and the electric scissors 1 are activated, the above-described activation process is the same. The user presses the lock switch 8c with the middle finger of the right hand and keeps the release position, pulls the trigger switch 8a and keeps it in the closed position for about 1 second (S2), and then a short buzzer sounds. At this time, although the user pulls the trigger switch 8a to the closed position, the opening degree of the blade portion 9 remains fully open. Thereafter, the user once releases the trigger switch 8a to the open position (S3), so that the electric scissors 1 shifts from the standby state to the normal operation state, and the blade portion 9 opens and closes in conjunction with the trigger switch 8a. (S4) After this, the scissors body 2 can cut branches. When the user pulls the trigger switch 8a again to the closed position, the blade portion 9 is closed at the same time, and the opening degree of the blade portion 9 is eventually fully closed. In addition, the starting process when the opening degree of the blade part 9 is medium is the same as the starting process when the opening degree of the blade part 9 is fully opened.

  Although the embodiments of the present invention have been described above, the specific embodiments of the present invention are not limited to the above-described embodiments, and the present invention can be changed even if there is a change without departing from the gist of the present invention. include.

It is explanatory drawing which shows each component of the electric scissors 1. It is explanatory drawing which shows the internal structure of the scissors main body 2. FIG. It is a flowchart figure which shows the starting process of the electric scissors 1. It is a flowchart figure which shows the completion | finish process of the electric scissors 1.

DESCRIPTION OF SYMBOLS 1 Electric scissors 2 Scissor main body 3 Control box 3a Control board 3b Battery 4 Scissor main body cable 5 Main switch cable 6 Main switch 7 Grip 8 Operation part 8a Trigger switch which is an opening / closing switch 8b Guard body 8c Lock switch 9 Blade part 9a Upper blade 9b Lower 9c Arm 9d Support point 10 Motor 11 Ball screw 11a Screw shaft 11b Nut 11c Magnet 12 Link 13 Magnetic sensor 14 Magnetic sensor

Claims (3)

To start / stop power supply to the main body, a blade portion having a plurality of blades that at least one sheet opens and closes, an open / close switch having an open position and a closed position to open and close the blade portion In the electric scissors composed of a main switch having a start position and a stop position,
A standby state in which the blade portion does not open and close without being linked to the open / close switch and a normal operation state in which the blade portion is opened and closed in conjunction with the open / close switch can be taken, and the standby state is set by setting the main switch to a start position. The electric scissors are characterized in that after the open / close switch is closed for a predetermined time, the normal operation state is entered. In an electric scissor comprising a blade portion having a plurality of blades that at least one sheet opens and closes, and an open / close switch having an open position and a closed position to open and close the blade portion,
The blade portion is closed by setting the open / close switch to the closed position, the blade portion is opened by setting the open / close switch to the open position, and a standby state in which the blade portion does not open and close without being linked to the open / close switch; A normal operation state in which the blade portion opens and closes in conjunction with the open / close switch can be taken, and in the normal operation state, after the open / close switch is closed for a predetermined time, the blade portion is closed and the standby state is entered. Electric scissors characterized by In the electric scissors according to claim 1 or 2,
A guard body that surrounds the open / close switch in an arch shape, and a lock switch that allows the open / close switch to be operated by being in an open position, and that the open / close switch cannot be operated by being in a fixed position, Electric scissors characterized in that a lock switch is arranged outside the area surrounded by the guard body.

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