JP2009184076A - Hand-held stopper continuous supply tool and power saving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand-held stopper continuous supply tool capable of mounting a small and lightweight power source, and a power saving method. <P>SOLUTION: When ejection of a screw is detected, the mode is in an active mode from a sleep mode (refer to a step 100 or a step 102), and after screw residual amount detection processing or alarm processing (ordinary processing) (refer to a step 104 or a step 106), the mode is returned to the sleep mode (refer to a step 108). That is, power consumption is consumed only in a required scene, and therefore, the power consumption of an electronic component is drastically reduced compared to the case when the mode is always in the active mode, and the small and lightweight power source such as a battery can be mounted. Accordingly, a convenient screw driving machine can be provided. Concretely, with the weight almost identical with the existing screw driving machine and with the usage of an exterior component identical with the existing screw driving machine, an electronic device for preventing idle driving can be mounted or afterward attached. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hand-held stopper continuous supply tool and a power saving method for continuously supplying a plurality of fasteners, and more particularly to a hand-held stopper continuous supply tool and an electric power saving method equipped with an electronic circuit.

  For example, a hand-held stopper continuous supply tool (hereinafter also simply referred to as a tool) such as a nail driver loads a nail or a screw as a stopper into a magazine of the tool body and injects the stopper. However, if the operator does not notice that the stopper has been used up, the worker may run out and may damage a stopper such as a gypsum board with a driver bit, for example.

  As a means for solving this, it is conceivable to provide a tool body with a blanking prevention mechanism for preventing blanking. However, when this blanking prevention mechanism is provided on the tool body, the weight increases and becomes heavy. Therefore, inconveniences such as poor usability occur. On the other hand, it is also conceivable that an electronic device for preventing idling that detects the remaining amount of the fastener using an electronic component such as a sensor is mounted on the tool body.

Conventionally, a detection device that detects that the remaining amount of stable in the magazine is absent or has been disclosed is disclosed (for example, see Patent Document 1). Conventionally, a stable hitting device including a sensor that monitors the supply of the stable when the stable is consumed is disclosed (for example, see Patent Document 2). Furthermore, conventionally, there has been disclosed an operation detecting device for a stable hammer that detects the movement of the stable driven forward by the stable driving operation (see, for example, Patent Document 3).
Japanese Utility Model Publication No. 3-33077 JP-A-57-89572 JP-A-8-164503

  By the way, when the above-described electronic device for preventing idling is mounted on the tool body, a small and lightweight electronic component such as a CPU or a sensor can be used, but a power supply component such as a battery is compared with the electronic component. Large and heavy.

  The technology according to Patent Documents 1 to 3 relates to an electric staple placed on a base, a stable driving device built in a copying machine, and an automatic stable driving device for driving a stable by automatic control. It's not about hand-held tools.

  Accordingly, an object of the present invention is to provide a hand-held fastener continuous supply tool and a stopper remaining amount detection method capable of mounting a small and lightweight power source.

  The hand-held stopper continuous supply tool according to the present invention is a hand-held stopper continuous supply tool for continuously supplying a plurality of stoppers, and an injection detecting means for detecting that the stopper is injected, When the injection detecting means detects the injection of the stopper, the standby mode is switched to the operation mode in which the normal processing can be operated from the power saving state with low power consumption, and when the normal processing ends. Control means for shifting from the operation mode to the standby mode.

  In addition, you may make it provide the remaining amount detection means which detects the remaining amount of the said fastener in the said structure. Then, based on the control means, after the transition to the operation mode, when the remaining amount detection means detects that the remaining amount of the fastener is a predetermined number or more, the standby mode is changed from the operation mode. You may make it transfer to mode.

  Here, the normal processing includes processing for detecting the remaining amount of the fastener, warning processing such as warning light emission / warning sound / warning vibration / warning display, and processing for counting the number of stoppers to be driven. For example, when the remaining amount of fasteners is equal to or less than a predetermined number, a warning process may be performed for a predetermined time and then returned to the standby mode.

  The power saving method according to the present invention is a standby mode that is a power saving state with low power consumption when detecting the injection of the stopper in a hand-held stopper continuous supply tool that continuously supplies a plurality of stoppers. From the operation mode to the standby mode when the normal processing is completed.

  In the handheld fastener continuous supply tool and the power saving method according to the present invention, when the injection of the stopper is detected, the standby mode is changed to the operation mode, and the normal mode returns to the standby mode. Therefore, it is possible to mount a power source such as a small and light battery. That is, according to the present invention, for example, the weight of the electronic device for preventing idling can be suppressed to a necessary minimum, and therefore, a hand-held stopper continuous supply tool that is easy to use can be provided. Specifically, the electronic device for preventing the idling can be mounted or retrofitted using substantially the same weight and the same exterior component as the ready-made hand-held stopper continuous supply tool.

(First embodiment)
Hereinafter, based on FIG. 1 thru | or FIG. 13, the handheld fastener continuous supply tool and power saving method which are 1st Embodiment of this invention are demonstrated. The hand-held fastener continuous supply tool in the present embodiment will be described as the hand-held air-driven screw driving machine 10 shown in FIG. 1, and the stopper will be described as a screw.

  1 is a side view of the screw driving machine 10, FIG. 2 is a perspective view of the screw driving machine 10, FIG. 3 is a cross-sectional view showing the main part of the screw driving machine 10, and FIG. 6 and 7 are views showing a state in which the detection lever of the stopper remaining amount detection mechanism detects the screw W, and FIGS. 8 to 10 are initial states of the detection lever (detecting the nail). FIG.

(Schematic configuration of the screw driving machine 10)
A screw driving machine 10 shown in FIG. 1 includes a striking mechanism and a screw tightening mechanism (not shown). The striking mechanism includes a striking cylinder, a striking piston slidably provided in the striking cylinder, and a driver bit 12 (see a two-dot chain line in FIG. 3) integrally coupled to the striking piston. As shown in FIG. 1, when the trigger 14 is pulled, compressed air is supplied into the striking cylinder from an air chamber (connected to an air supply source) 16 that stores compressed air. The illustrated driver bit 12 is actuated. As shown in FIG. 1, the air chamber 16 is formed inside the grip portion 15.

  The screw tightening mechanism (not shown) is for tightening the driver bit 12 (see FIG. 3) by the power of the air motor. That is, almost simultaneously with the start of the operation of the impact mechanism, a part of the compressed air flowing from the air chamber 16 shown in FIG. 1 is supplied to the air motor 18 as shown in FIG. Rotate to Then, the screw W (refer to the two-dot chain line in FIG. 3) located at the injection port (see the two-dot chain line in FIG. 3) is tightened by a rotating driver bit 12 (not shown) such as a gypsum board.

  In addition, the injection port mentioned above is formed in the nose part 20 mentioned later. Further, since the hitting mechanism and the screw tightening mechanism are the same as those of a conventionally known configuration disclosed in Japanese Patent Laid-Open No. 2001-353671, etc., further details are omitted.

  As shown in FIG. 3, the screw driving machine 10 includes a nose portion 20 for injecting a screw W and a contact member 22 as a safety device that is slidably disposed on the nose portion 20. The contact member 22 is urged so as to protrude toward the driving side of the screw W, and the operation of the trigger 14 (see FIG. 1) is effective only when the contact member 22 is pressed against the member to be tightened. Yes. Further, the contact member 22 is temporarily locked to a contact stopper (not shown) at the time of pressing. And the said striking mechanism act | operates and it is comprised so that it can project to the driving side again by moving a contact stopper.

(Configuration related to screw remaining amount detection mechanism S)
As shown in FIG. 3, in the screw driving machine 10, a screw feeding device 24 and a magazine 26 are continuously arranged on the nose portion 20. The plurality of screws W in the magazine 26 are sequentially supplied to the injection position of the nose portion 20 by the screw feeding device 24. The screw feeder 24 includes a screw feeding air section 25 shown in FIG.

  A cover 28 shown in FIG. 2 is rotatably disposed on the magazine 26. And the cover 28 covers the guide part 30 shown in FIG. As shown in FIG. 6, the plurality of screws W are respectively attached to connecting bands WN that are connected in a long shape, and the connecting bands WN are stored in the magazine 26 in a state of being wound in a roll shape.

  As shown in FIG. 6, the rotatable cover 32 covers the screw feeding portion 24 </ b> A of the screw feeding device 24. As shown in FIGS. 6 and 7, when the cover 28 or 32 is locked, the cover 28 or 32 presses the connecting band WN toward the guide portion 30 or the screw feed portion 24A, and the screw W is predetermined. Is held at a height of

  As shown in FIGS. 4 to 7, the screw remaining amount detection mechanism S includes a plurality of detection components such as a detection box 34 and a detection lever 36 that house a circuit board 44 described later. The detection lever 36 constituting a part of the remaining amount detecting means rotates over a predetermined range around the shaft 38 and comes into contact with a screw W located on the guide portion 30. That is, as shown in FIGS. 6 and 9, the detection lever 36 is always urged by the spring 40 toward the guide portion 30 side, that is, the screw W (see FIG. 6) side positioned on the guide portion 30. The detection lever 36 is provided with a magnet 42 that constitutes a part of the remaining amount detection means. Note that the shaft 38 is disposed in the guide portion 30 of the magazine 26.

  On the other hand, as shown in FIGS. 4 and 5, a circuit board 44 is arranged in the detection box 34, and on the circuit board 44, an electronic device such as a Hall element 46 that constitutes a part of the remaining amount detection means. The component is mounted. As shown in FIGS. 4 and 7, the Hall element 46 is arranged to face the magnet 42 when the detection lever 36 detects the screw W supplied to the guide portion 30.

  That is, when the screw W is supplied to the guide portion 30, the detection lever 36 is pushed back against the biasing force of the spring 40, and the magnet 42 and the hall element 46 are opposed to each other (FIGS. 6 to 8). State). On the other hand, as shown in FIGS. 9 and 10, when the screw W is not positioned on the guide portion 30, that is, when the remaining amount of the screw W is reduced, the detection lever 36 is attached to the vicinity of the cover 28 by the biasing force of the spring 40. The turned off state (a state in which the magnet 42 is separated from the Hall element 46).

  As shown in FIG. 4, an acceleration sensor 48, which is a piezoelectric element (piezo element), is disposed on the circuit board 44. The acceleration sensor 48, which forms part of the injection detection means, is screwed by the hitting mechanism described above. Detecting being hit. That is, the acceleration sensor 48 converts a force (impact force) applied to the piezoelectric body into a voltage. The acceleration sensor 48 is configured to output a detection signal (ON signal) by an impact when the screw W is actually hit from the screw driving machine 10.

  Here, the reason why the acceleration sensor 48 is used as the injection detecting means is as follows. First, the electronic circuit mounted on the screw driving machine 10 is a complete module. For example, when a detection switch linked to the pulling operation of the trigger 14 shown in FIG. 1 is arranged, the structure associated with the detection switch becomes complicated, and the degree of freedom in design is reduced. However, since the acceleration sensor 48, which is a piezo element, only needs to be subjected to an impact, it can be arranged on the circuit board 44 (see FIG. 4), increasing the degree of freedom in design, and can be easily retrofitted. obtain.

  Secondly, as described above, the acceleration sensor 48 converts the force applied to the piezoelectric body into a voltage, and thus does not consume power. In particular, the acceleration sensor 48 is optimal because it is necessary to save power as much as possible in the compressed air drive type hand-held stopper continuous supply tool as in this embodiment.

  In addition, a button-shaped battery 52 is disposed in the detection box 34, and power is supplied to electronic components such as the LED 50 by the battery 52 as a power source.

  Further, as shown in FIGS. 1 to 3, the LED driving device 10 is provided with an LED 50 on the upper side of the magazine 26. The LED 50 constitutes a part of warning means that blinks when the remaining amount of the screw W decreases. The irradiation direction of the LED 50 is the same as the injection direction of the screw W.

  The components related to the screw remaining amount detection mechanism S are lightweight such as a button-type battery 52, a piezoelectric element such as an acceleration sensor 48, a hall element 46, and a magnet 42 as shown in FIG. Weight is kept to a minimum.

(Configuration of control system of screw remaining amount detection mechanism S)
As shown in FIG. 11, the remaining screw amount detection mechanism S includes a CPU 90, a ROM 92, a RAM 94, an input / output unit 96, a hall element 46, an acceleration sensor 48, and an LED 50. The CPU 90 controls the overall operation of the remaining screw amount detection mechanism S, and performs processing such as counting the remaining amount of the screw W when the screw W is hit by the hitting mechanism, for example. The CPU 90 is a control unit and also constitutes a part of the injection detection unit or the remaining amount detection unit.

  The ROM 92 as storage means stores a program for controlling various processes. The RAM 94 has a recording area for reading and writing various data, and hit data and the like are recorded in this recording area. The input / output unit 96 is connected to an external memory such as a USB memory (not shown) or an external communication terminal. Then, transmission / reception or transmission / reception of count data of the total number of screws W to be screwed in or repair history data is performed via the input / output unit 96.

(Operation of this embodiment)
Based on the flowchart shown in FIG. 12, processing related to the power saving mode will be described. The process in the screw driving machine 10 shown in FIG. 1 is executed by the CPU 90 and is represented by the flowchart of FIG. These programs are stored in advance in the program area of the ROM 92 (see FIG. 11).

(Power saving mode)
In step 100 shown in FIG. 12, the CPU 90 determines whether or not the acceleration sensor 48 shown in FIG. 4 is on (see FIG. 13). That is, the acceleration sensor 48 that is a piezoelectric element generates a voltage (ON signal) by an impact caused by the screw W being ejected from the screw driving machine 10.

  When this ON signal is supplied to the CPU 90, that is, when step 100 is affirmative, in step 102, the CPU 90 shifts from the sleep (standby) mode to the active (operation) mode (see FIG. 13). Here, the sleep mode is a power saving state mode with low power consumption. On the other hand, the active mode is a mode in which normal processing can be performed.

  The normal processing includes processing for detecting the remaining amount of the screw W, warning processing such as warning light emission, warning sound, warning vibration, and warning display, and processing for counting the number of screws W to be driven. In addition, the normal process includes returning to the sleep mode after performing a warning process for a predetermined time when the remaining amount of the screws W is equal to or less than the predetermined number.

  Since the impact by the hitting mechanism described above is twice during the reciprocation of the driver bit 12 shown in FIG. 3, the CPU 90 ejects one screw W when the detection signal from the acceleration sensor 48 is twice. Judge that If step 100 is negative, that is, if the screw W is not actually hit, it waits for the screw W to be hit.

  After the transition to the active mode, in step 104, the CPU 90 determines whether or not the detection signal from the hall element 46 that detects the remaining screw amount is on. For example, as shown in FIGS. 9 and 10, when there is no screw W on the guide portion 30, that is, when the remaining amount of the screw W is small, the detection lever 36 rotates to the vicinity of the cover 28, and the magnet 42 and the Hall element 46 is separated, the detection signal from the Hall element 46 is turned off (high level signal H in FIG. 13).

  Therefore, since it is determined that step 104 is negative, in step 106, the CPU 90 causes the LED 50 shown in FIGS. 1 to 3 to flash and emit light for a predetermined time (see FIG. 13).

  On the other hand, as shown in FIGS. 6 and 7, when the detection lever 36 detects the screw W, since the magnet 42 faces the hall element 46, the detection signal from the hall element 46 is turned on (in FIG. 13). Low level signal L). Therefore, step 104 is determined as affirmative.

  When step 104 is affirmative or after the processing of step 106 is finished, in step 108, the mode is shifted (returned) from the active mode to the sleep mode (see FIG. 13). After step 108, the process returns to step 100.

  In the present embodiment, as shown in FIG. 13, the power consumption is consumed only in necessary scenes such as the remaining amount detection process and warning process of the screw W. Will be significantly less. That is, according to the present embodiment, when the injection of the screw W is detected, the sleep mode is changed to the active mode, and the normal mode returns to the sleep mode. Therefore, a power source such as a small and light battery can be mounted.

  Therefore, according to the present embodiment, the weight of the remaining screw amount detection mechanism S and the LED 50 which are also electronic devices for preventing, for example, idling can be suppressed to the necessary minimum, and the screw driving machine 10 that is easy to use. Can provide. Specifically, the electronic device for preventing the idling can be mounted using substantially the same weight and the same exterior component as the existing screw driving machine 10.

  In the present embodiment, since the remaining amount of the screw W is detected, it is possible to easily grasp the presence or absence of the screw W without hitting it. In other words, in the present embodiment, it is possible to prevent idling, and thus it is possible to prevent damage to the tightening member. Further, the processing flow of each program described in the above embodiment (see FIG. 12) is an example, and can be changed as appropriate without departing from the gist of the present invention. Furthermore, in this embodiment, the repair history data may be recorded in a RAM 94 (see FIG. 11) as a memory via the input / output unit 96 shown in FIG.

(Second Embodiment)
Hereinafter, based on FIG. 14, the control circuit of the screw driving machine which is 2nd Embodiment of this invention is demonstrated. In this embodiment, an OR circuit and a semiconductor switch are provided, and power is supplied to the CPU based on an ON signal of an acceleration sensor that is a part of the injection detection means.

  In addition, LED50 (not shown in FIG. 14) shown in FIG. 11 is connected to the circuit diagram shown in FIG. FIG. 15 shows a timing chart of the present embodiment, and FIG. 16 is a flowchart showing a power saving mode in the present embodiment. Furthermore, the same parts number is attached | subjected about the same parts as 1st Embodiment.

  As shown in FIG. 14, the CPU 90 is connected to a battery 52 and constitutes a power supply circuit. The CPU 90 is connected to the input terminal 63A of the OR circuit 62, and the acceleration sensor 48 is connected to the input terminal 63B of the OR circuit 62. The OR circuit 62 is composed of a circuit using a diode and an NPN transistor.

  An FET switch 64 that is a semiconductor switch is connected between the battery 52 and the CPU 90. A resistor 67 is connected between the FET switch 64 and the battery 52, and a resistor 68 is connected between the FET 64 and the OR circuit 62.

  When the screw is actually hit and the acceleration sensor 48 is turned on (see FIG. 15), a current (ON signal) flows through the input terminal 63B of the OR circuit 62, so that the OR circuit 62 becomes conductive. The FET switch 64 is switched from off to on, and a voltage is applied to the CPU 90.

  After that, as shown in FIG. 15, even if the acceleration sensor 48 is switched from on to off, normal processing such as processing for checking the signal of the hall element 46 (see FIG. 4) or blinking processing of the LED 50 (see FIG. 1). (See FIG. 15) must be continued. Therefore, the CPU 90 outputs the switch drive signal S1 to the input terminal 63A of the OR circuit 62 so that power is supplied to the CPU 90. That is, the switch drive signal S1 is a signal for keeping the FET switch 64 on.

  Next, processing related to the power saving mode will be described based on the flowchart shown in FIG. Before the start of this flowchart, it is assumed that the acceleration sensor 48 described above is turned on and power is supplied to the CPU 90. Before the power is supplied to the CPU 90, the screw driving machine is in the same state as the sleep mode in the first embodiment, and after the power is supplied, it is in the same state as the active mode in the first embodiment (see FIG. 15). ).

  In step 110 shown in FIG. 16, the CPU 90 turns on the switch drive signal S <b> 1 and outputs it to the input terminal 63 </ b> A of the OR circuit 62. In step 112, the CPU 90 determines whether or not the above-described normal processing has ended. If step 112 is positive, in step 114, the switch drive signal S1 is turned off, and the OR circuit 62 and the FET switch 64 are turned off.

  Therefore, no power is supplied to the CPU 90, and the power consumption of the CPU 90 and the like becomes zero as shown in FIG. That is, it becomes the same state as the sleep mode in the first embodiment. Step 112 is continued until the normal processing is completed. Therefore, in the present embodiment, the screw driving machine can be switched to the power saving mode based on the switch drive signal S1 of the CPU 90.

  In this embodiment, instead of the acceleration sensor, the injection detection structure of the reed switch (magnetic sensitive switch) 70 and the magnet 80 shown in FIGS. 17 and 18 may be arranged on the circuit board 44. The reed switch 70 is configured by providing a pair of electrodes 72 and 73 in a glass tube 71 so as to face each other and enclosing an inert gas such as nitrogen gas. As shown in FIG. 18, the reed switch 70 has a configuration in which a pair of electrodes 72 and 73 are brought into contact with each other by an external magnetic field to close the circuit. Note that the reed switch 70 is configured to consume very little power even when the pair of electrodes 72 and 73 are in contact with each other, and does not consume power when opened.

  As shown in FIG. 17, the magnet 80 is fixed to the tip 79 of the pendulum 78, and the base end of the pendulum 78 is fixed to the support shaft 76. Then, the pendulum 78 swings around the support shaft 76 by the impact of actual hitting (rotates over a predetermined angular range), and is arranged so as to be close to the reed switch 70 when the pendulum 78 swings as shown in FIG. ing. Therefore, also in this embodiment, when the screw is actually hit, the reed switch 70 is turned on, and the CPU 90 can determine or count the actual hit. That is, the present invention can be applied to either an acceleration sensor or a reed switch as long as it can detect the injection of the stopper.

(Third embodiment)
Hereinafter, based on FIG.19 and FIG.20, the detection box 60 which is 3rd Embodiment of this invention is demonstrated. In addition, the same parts number is attached | subjected about the same parts as 1st Embodiment. Unlike the first embodiment, the detection box 60 is an example in which the LED 50 is also arranged in the detection box 60 in addition to the detection lever 36.

  As shown in FIG. 19, the detection box 60 of the present embodiment is an example in which a detection lever 36 is also provided, and is configured so that it can be retrofitted to a ready-made screw driving machine. That is, in this embodiment, a plurality of detection components such as the detection lever 36 and the LED 50 are used as a single assembly completed product (assembly). Accordingly, in the present embodiment, since the detection box 60 can be easily attached and detached, various maintenance or replacement can be easily performed.

  The detection box 60 can be arbitrarily changed as long as it is a place where the remaining amount of the screw W can be detected (on the screw transfer path). For example, the detection box 60 may be provided on the injection side of the screw W (position shown in FIG. 20). good. Since other configurations and operational effects are the same as those of the first embodiment, detailed description thereof is omitted.

(Other variations)
In the present invention, power may be generated by the air motor 18 to obtain auxiliary power, and a main switch may be provided in the circuit so that the operator can turn it on or off.

  The warning method can be arbitrarily changed. For example, in the present embodiment, the LED 50 is blinked over a predetermined time. However, for example, the light emission pattern may be blinked earlier as the remaining number decreases, or the light emission color may be changed according to the remaining number, for example. (Yellow to red). Further, the warning may be made with an arbitrary number, or a speaker / vibration device may be arranged so that the warning can be made with a buzzer sound / sound / vibration to notify the number.

  Furthermore, in the present invention, the total number of screws W driven in may be counted by the acceleration sensor 48 or the like, and the maintenance time may be notified based on this count, or the battery replacement time may be detected by detecting the voltage of the battery 52. Etc. may be warned.

  In this embodiment, the hand-held stopper continuous supply tool is an example of a screw driving machine. However, the hand-held stopper continuous supply tool of the present invention continuously supplies stoppers such as nails, staples, and stables. It can also be applied to tools. Moreover, although this embodiment is an example of a compressed air drive type hand-held stop continuous supply tool, the present invention can be applied to an electric hand-held stop continuous supply tool because it can save power.

It is a side view of the screw driving machine of one embodiment concerning the present invention. It is the perspective view seen from the front of the screw driving machine shown in FIG. It is sectional drawing which shows the principal part of the screw driving machine shown in FIG. It is a perspective view which shows the principal part of the screw residual amount detection mechanism shown in FIG. FIG. 4 is an enlarged sectional view of a screw remaining amount detection mechanism shown in FIG. 3. It is a use condition figure in case the screw residual amount detection mechanism shown in FIG. 4 detects a screw. FIG. 7 is a cross-sectional view taken along line 7-7 shown in FIG. 6. It is a perspective view which shows the ON state of the detection lever shown in FIG. It is a use condition figure when the screw residual amount detection mechanism shown in FIG. 4 does not detect a screw. FIG. 10 is a cross-sectional view taken along the line 10-10 shown in FIG. 9. It is a block diagram of the screw driving machine shown in FIG. It is a flowchart figure regarding the power saving mode of the screw driving machine shown in FIG. FIG. 13 is a timing chart in the power saving mode shown in FIG. 12. It is a control circuit diagram of the screw driving machine which concerns on 2nd Embodiment. It is a timing chart regarding the screw driving machine shown in FIG. FIG. 16 is a flowchart in the power saving mode shown in FIG. 15. It is the schematic regarding the reed switch which is another injection | emission detection structure. It is a figure which shows the ON state of the reed switch shown in FIG. It is the whole detection box perspective view concerning a 3rd embodiment. FIG. 20 is a perspective view of a state in which the detection box shown in FIG. 19 is retrofitted to an existing screw driving machine.

Explanation of symbols

10 Screw driving machine (hand-held fastener continuous feed tool)
36 Detection lever (remaining amount detection component)
42 Magnet (remaining amount detection component)
46 Hall element (remaining amount detection component)
48 Acceleration sensor (Injection detection means)
50 LED (Warning means)
90 CPU (detection means, remaining amount detection means, injection detection means)
W screw (fastener)
S Screw remaining amount detection mechanism (stopper remaining amount detection mechanism)

Claims (2)

A handheld fastener continuous supply tool for continuously supplying a plurality of fasteners,
Injection detecting means for detecting that the stopper has been injected;
When the injection detecting means detects the injection of the stopper, the operation mode is shifted from the standby mode, which is a power saving state with low power consumption, to the operation mode in which normal processing can be performed, and when the normal processing ends. Control means for shifting from the operation mode to the standby mode;
A hand-held fastener continuous supply tool characterized by comprising: In the hand-held fastener continuous supply tool that continuously supplies multiple fasteners,
When detecting the injection of the fastener, the standby mode, which is a power saving state with low power consumption, is shifted to an operation mode in which normal processing can be performed. A power saving method characterized by causing a transition to a standby mode.

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