WO2012035815A1

WO2012035815A1 - Electrically powered hand tool

Info

Publication number: WO2012035815A1
Application number: PCT/JP2011/059625
Authority: WO
Inventors: 真人風間; 秀二中村; 則和増田
Original assignee: 株式会社アルファ
Priority date: 2010-09-15
Filing date: 2011-04-19
Publication date: 2012-03-22
Also published as: JP2012061543A

Abstract

In an electrically powered hand tool, a processing bit (3) is operated by an electric drive device (2) housed in a housing (1). The electrically powered hand tool includes: an authentication section (4) that authenticates the usage authority of a user; a valid-time setting section (5) that sets the valid time of the authentication established by the authentication section (4); a remaining-time measurement section (6) that measures the remaining time of the valid time; and an operation management section (7) that makes the electric drive device (2) drivable on condition that it is within the valid time.

Description

Electric hand tools

The present invention relates to an electric hand tool.

As an electric hand tool incorporating an authentication device to prevent theft, the one described in Patent Document 1 is known. In this conventional example, the electric hand tool is provided with a mode change switch. A “tool unusable mode” in which the tool cannot be used by pressing the mode change switch for a predetermined time, an “identification code verification mode” for performing an authentication operation for canceling the tool unusable mode, and an authentication unit The “identification code setting mode” for setting the identification code is selected, and an operation specific to the mode is performed.

However, in the conventional example described above, it is necessary to operate the mode change switch in order to shift to the tool unusable mode. For this reason, the operation is troublesome and there is a possibility that the authentication may be substantially invalidated due to forgetting to operate.

Japanese Unexamined Patent Publication No. 2004-181549

One or more embodiments of the present invention provide an electric hand tool with improved anti-theft performance without reducing usability.

According to one or more embodiments of the present invention, the electric hand tool for operating the machining tip 3 using the electric drive device 2 housed in the housing 1 is an authentication unit for authenticating the user's usage authority. 4, an effective time setting unit 5 for setting the effective time of authentication established in the authentication unit 4, a remaining time measuring unit 6 for measuring the remaining time of the effective time, and electric drive on condition that it is within the effective time An operation management unit 7 that enables the device 2 to be driven may be provided.

Further, according to one or more embodiments of the present invention, the operation of the electric hand tool that permits the operation of the machining tip 2 by turning on the start switch 10 on the condition that the authentication in the authentication unit 7 is established is established in the authentication unit 7. The authentication may be controlled by setting an effective time for the authentication and permitting the operation of the machining tip 2 when the start switch 10 is turned on within the effective time.

Other features and effects will be apparent from the description of the embodiments and the appended claims.

FIG. 1 (a) is a side view of an electric hand tool of an exemplary embodiment. FIG.1 (b) is principal part sectional drawing of Fig.1 (a). FIG. 1C is a front view showing the auxiliary handle. FIG. 2 is a functional block diagram of the electric hand tool. FIG. 3 is a flowchart showing the operation of the electric hand tool. FIG. 4 is a flowchart showing the operation of the electric hand tool.

The electric hand tool is a tool that can be handled by operating the machining tip 3 using an electric drive device 2 such as a motor accommodated in the housing 1. Examples of the electric hand tool include a drill device, a hammer drill device, an electric multi-needle chisel device, a circular saw device, and the like. Examples of the processing tip 3 include a drill bit in a drill device, a drill bit in a hammer drill device, or a chisel. It does not matter whether the processing tip 3 is detachable from the housing 1 or not.

Authentication in the authentication unit 4 has a valid period managed by the remaining time measuring unit 6. In order to operate the processing tip 3 after the elapse of the effective time, re-authentication is required. By setting the effective period of authentication, it is possible to prevent the deterioration of the theft prevention due to forgetting to end the operation, as in the case where the user determines the end of the effective period each time by operating a switch or the like. In addition, when the effective period is determined by, for example, the power-off timing, the frequency of authentication increases and the usability deteriorates. When the effective period is determined by the connection timing to the power source, the effective period becomes excessively long. For this reason, it is impossible to prevent damage, accidents, etc. due to the use of an operator who does not have the authority to use. On the other hand, in the electric hand tool according to the embodiment, the effective period of the remaining time can be determined as appropriate, so that it is possible to select an authentication timing that matches the actual work situation at the use site.

The transition to the setting mode in the valid time setting unit 5 can be realized, for example, by arranging a transition switch. However, the valid time setting unit 5 is provided on the condition that the authentication unit 4 is again authenticated within the valid authentication time. If the operation is started, the structure is simplified and the setting of the valid time and the updating operation are simplified.

Further, when the effective time is defined as an interval time between the driving states of the electric drive device 2, the effective time is not consumed in the operating state in which the machining tip 3 is operated, and the effective time is in the non-operating state. Is consumed. As a result, if the electric hand tool is left in a non-operating state for a long time, a re-authentication operation is required, which may reduce unauthorized use or theft by third parties when left unattended. it can.

As the authentication unit 4, various devices such as a password verification device and a biometric authentication device such as fingerprint authentication can be used. When the RFID authentication device is used as the authentication means, the tool can be reduced in size and the usability is improved.

In this case, when a tag sticker in which an RFID tag 9 chip is fixed to the sticker is used, the operator can freely attach it to, for example, a mobile phone or the like, thereby improving convenience.

Further, when the RFID authentication apparatus is used, the effective time setting in the effective time setting unit 5 is set to the communication continuation time between the RFID reader / writer 8 and the RFID tag 9, that is, the RFID tag 9 is connected to the RFID reader / writer 8. If the time is set, the operation switch for setting the time becomes unnecessary, and the structure becomes simple and the setting operation becomes easy.

According to the electric hand tool of the embodiment, since the valid time of authentication can be set according to the actual situation of use of the tool, it is possible to avoid unnecessary authentication operation or forgetting to cancel the authentication operation, improving usability In addition, the anti-theft performance can be improved.

<Typical Examples>
FIG. 1 (a) to FIG. 1 (c) show a hammer drill as an exemplary embodiment. The hammer drill is formed so that it can be handled by housing a motor (electric drive device 2) in the housing 1. A chuck portion 11 for holding a drill bit (processing tip portion 3) is disposed at one end portion of the housing 1, and the power of the motor 2 is transmitted to the chuck portion 11 via an appropriate gear train 12, thereby enabling the drill bit. 3 is activated.

Also, the housing 1 is provided with a handle portion 13 and an auxiliary handle 14, and a trigger lever (start switch 10) is mounted on the inner wall surface of the handle portion 13 so as to be rotatable around the pivot axis 10a.

The auxiliary handle 14 can be rotated around the center of rotation of the drill bit 3 and can be repositioned between the solid line position and the chain line position in FIG. Since the inadvertent movement of the auxiliary handle 14 during work significantly reduces the safety of the work, a fixing device (not shown) is attached to the auxiliary handle 14.

Furthermore, the authentication unit 4, the trigger detection switch 15, the control device 16, and the LED 17 are stored in the housing 1.

As shown in FIG. 2, in an exemplary embodiment, an RFID authentication device is used as the authentication unit 4. The RFID authentication device includes an ID storage unit 4a that stores an authenticable ID, and an RFID reader / writer 8 that obtains an ID unique to the RFID tag 9 through short-range communication with the RFID tag 9 possessed by the user. Configured. When the ID read by the RFID reader / writer 8 matches the ID of the ID storage unit 4a, an authentication establishment signal is output to the control unit 18 described later.

In a typical embodiment, as the RFID tag 9, a seal tag that can be attached to a user's favorite object and held is used. As shown in FIG. 1B, the RFID tag 9 can be attached to a mobile phone 19 or the like that is always worn by an operator. As a result, loss of the RFID tag 9 can be prevented.

The control device 16 includes a power adjustment unit 16a, a motor drive circuit 16b, and a control unit 18. The power supplied from the commercial power supply 20 or the battery is stepped down by the power supply adjustment unit 16a, or AC-DC converted when necessary and supplied to the control unit 18, and further supplied to the motor drive circuit 16b.

The control unit 18 includes a motor control unit 18b controlled by the control unit 18a, an effective time setting unit 5, a remaining time measurement unit 6, an operation management unit 7, a trigger detection unit 18c, and a display control unit 18d. When the control unit 18a accepts the authentication establishment signal from the authentication unit 4, an operation enable flag is set in the operation management unit 7, and the display control unit 18d supplies the drive current of the LED 17 to turn on the LED 17 for use. Inform users that they are available.

The trigger detection unit 18c monitors the output of the trigger detection switch 15 that is activated by an operation on the trigger lever 10, and when the control unit 18a detects an operation on the trigger lever 10 via the trigger detection unit 18c, the operation management unit 7 is inquired whether the operable flag is set. When the operable flag is set in the operation management unit 7, the motor 2 is rotated by supplying power to the motor drive circuit 16b via the motor control unit 18b, and the drill bit 3 is operated.

The output from the trigger detection switch 15 to the trigger detection unit 18c includes information related to the pull-in depth of the trigger lever 10 in addition to the ON / OFF information of the trigger lever 10, and the motor control unit 18b includes a motor drive circuit. The current value supplied to 16b is adjusted in accordance with the pull-in depth, and the rotational speed of the motor 2 is controlled.

The valid time setting unit 5 can set the valid time of establishment authentication in the authenticating unit 4. In the exemplary embodiment, the operation is started by the control unit 18a that has received the authentication establishment signal from the authentication unit 4 in the state where the operation enable flag is set in the operation management unit 7.

In the operating state, the valid time setting unit 5 is programmed so as to determine the valid time based on the amount of time that the RFID tag 9 triggers the RFID reader / writer 8 that triggered the activation of the valid time setting unit 5. For example, when the RFID tag 9 is deviated from the RFID reader / writer 8 by deviating from the time (T1), the time (R1) is registered as an effective time, and deviated continuously for a time (T2) longer than T1. Is registered such that the time (R2) is registered as an effective time, and if a time longer than this is registered, the trick time is re-measured from zero. In order to notify the user of the set valid time, the display control unit 18d is controlled so that the LED 17 performs a blinking operation corresponding to the valid time.

The measurement of the setting time can be realized, for example, by measuring the number of pulses from the resolution of the reading error in the RFID reader / writer 8 of the authentication unit 4 to the occurrence of the reading error.

The remaining time measuring unit 6 is a counter that measures the remaining time of the effective time set in the effective time setting unit 5, and when the control unit 18a detects time up, the operable flag of the operation management unit 7 is reset, Thereafter, in order to drive the motor 2, a second authentication operation is required.

The measurement target in the remaining time measurement unit 6 is the non-operation time of the motor 2, continues measurement while the trigger detection switch 15 is in the OFF state, and is reset with the transition of the trigger detection switch 15 to the ON state. When the trigger detection switch 15 is turned off again, the set time is reset and the measurement is started.

3 and 4 show the control flow of the control unit 18. First, when the power is turned on during operation (step 100), the display control unit 18d turns off the LED 17 (step 101) and waits for authentication to be established in the authentication unit 4 (steps 102 and 103). When authentication is established in step 103, an operation enable flag is set in the operation management unit 7, and the LED 17 is turned on to notify the operator that the operation is available (step 104).

In this embodiment in which the start of the operation of the valid time setting unit 5 is conditional on re-authentication for the same RFID tag 9 as at the time of authentication, the authenticated ID is temporarily held in the valid time setting unit 5 (step 105). Thereafter, a preset valid time is set in the timer (step 106).

When the motor 2 can be driven as described above (step 107), the timer is started and the remaining time measurement is started (step 108). The remaining time is used for checking the valid period of the operable flag in the operation management unit 7 and determining whether or not the authentication is performed again within the valid time which is a condition for transferring control to the valid time setting unit 5. Therefore, first, the time-up is confirmed (step 109). When it is before the time-up, it is determined whether or not the authentication operation is performed again. After resetting the operable flag (step 109-1), the ID temporarily held in step 105 is deleted (step 109-2), and the control is returned to step 101.

On the other hand, the determination as to whether or not the authentication operation is performed again is performed by first detecting the contact of the RFID tag 9 with the RFID reader / writer 8 (step 110), or when the RFID tag 9 is not detected or detected. However, if the ID is different from the temporarily held ID in step 105, that is, if an RFID tag 9 different from that at the time of authentication establishment is deceived (step 111), it is assumed that the authentication operation is not performed again, the trigger lever Monitor the operation to 10.

In this state, when the operator operates the trigger lever 10 and the trigger detection switch 15 is turned on (step 112), the timer is reset to the initial value in order to end the remaining time measurement (step 113), and the motor 2 is driven to rotate (step 114). The motor 2 is driven to rotate until the operation of the trigger lever 10 is completed. When the trigger detection switch 15 detects OFF (step 115), the motor 2 stops rotating (step 116), and the control is shifted to step 108.

On the other hand, when a re-authentication operation is detected in step 111, the mode shifts to a valid time setting mode (step 200). In the setting mode, first, after the timer is cleared (step 201), the operable flag in the operation management unit 7 is reset to prevent inadvertent rotation of the motor 2 during the effective time setting operation (step 202). .

As described above, the setting of the valid time is performed based on the time for which the RFID tag 9 is attached to the RFID reader / writer 8, and a counter is first started in order to measure the time spent (step 203). In this embodiment, the valid time setting unit 5 can set one valid time among four different valid times. First, the contact time of the RFID tag 9 measured by the counter is the time. 1 is determined (step 204). If the time 1 is not reached, the effective time is determined as “0” (step 211), and is registered in the effective time setting unit 5 (step 212). ), And returns the control to step 108.

Also, if the contact time exceeds time 1 in step 204, after temporarily setting the effective time to time 1, in order to notify the operator of this, after blinking the LED 17 with a predetermined blink pattern 1 ( In step 205), it is detected whether or not the contact time reaches time 2 (step 206). If it is not detected in step 206 that time 2 has been reached, the effective time is set to time 1 temporarily set in step 205. After the determination (step 211), step 212 and subsequent steps are executed.

Hereinafter, similarly,

time

2 and 3 are determined (

steps

206, 297, 208, and 209). Finally, when the contact time exceeds time 3 and reaches time 4 (step 210), after resetting the counter, Step 203 and the subsequent steps are executed again to determine and register the valid time.

DESCRIPTION OF SYMBOLS 1 Housing 2 Electrical drive device 3 Processing front-end | tip part 4 Authentication part 5 Effective time setting part 6 Remaining time measurement part 7 Operation management part 8 RFID reader / writer 9 RFID tag 10 Start switch

Claims

An electric hand tool for operating a machining tip (3) using an electrical drive (2) housed in a housing (1),
An authentication unit (4) for authenticating the use authority of the user;
An effective time setting unit (5) for setting an effective time of authentication established in the authentication unit (4);
A remaining time measuring unit (6) for measuring the remaining time of the effective time;
An operation management unit (7) that can drive the electric drive device (2) on the condition that it is within an effective time;
Comprising
Electric hand tool.
The electric hand tool according to claim 1, wherein the effective time setting unit (5) starts an operation on condition that the authentication unit (4) establishes authentication again within the effective time.
The electric hand tool according to claim 1 or 2, wherein the effective time is defined as an interval time between driving states of the electric driving device (2).
The authentication unit (4) includes an RFID authentication device,
The electric hand tool according to claim 1, wherein the valid time is set by a communication continuation time with an RFID tag of an RFID reader / writer.
An operation control method for an electric hand tool that permits the operation of the machining tip (3) by turning on the start switch (10) on condition that the authentication in the authentication unit (4) is established,
An effective time is set for the authentication established in the authentication unit (4),
Permitting operation of the machining tip (3) when the start switch (10) is turned on within the effective time;
An operation control method for an electric hand tool.