JP2009012151A - Driving tool for construction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To turn on a lighting system according to an operation of a trigger switch in an environment requiring lighting, and to turn off the lighting system, even when the trigger switch is operated in an environment requiring no lighting. <P>SOLUTION: This driving tool for construction has: a lighting means 6 installed in a tool main body to light a workpiece; the trigger switch 9 for driving a driving means provided in the tool main body; and lighting control means 7, 14 and 15 controlling lighting light in the lighting means 6 according to the operation of the trigger switch 9. Each of the lighting control means 7, 14 and 15 has an illuminance sensor 7 to detect illuminance of the surrounding. Only when the illuminance detected by the illuminance sensor 7 is prescribed illuminance or less, a turning on/off processing of the lighting means 6 is performed according to the operation of the trigger switch 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an architectural drive tool including an illumination device capable of irradiating illumination light to a tool tip or the like.

  When working using a construction drive tool at a construction site, the working environment is not necessarily secured with sufficient lighting.For example, when working at dusk or at night, There are many cases where work is performed inside a building that is not installed, behind the ceiling, or under the building.

  In such a dark work site, work is often performed after installing lighting such as lanterns, but when performing work to install nails, screws, etc. on building materials, even when lighting is installed However, since consumables such as nails and screws are relatively small and difficult to see, there is a problem that the work is difficult to perform.

  In order to overcome such a decrease in visibility, a method has been proposed in which a lighting device that can be attached to and detached from the power tool is installed to actively illuminate a work site (for example, a bit tip) in the power tool. (For example, refer to Patent Document 1). When using the tool shown in Patent Document 1, the angle of the light provided at the lower part of the grip part (grip part) can be changed, so that the direction of the illumination light can be adjusted to a desired direction. It is.

  However, in the electric tool described above, a lighting switch is provided in addition to the trigger switch for driving the tool. For this reason, for example, when turning on / off the illumination while holding a tool and a consumable item such as a nail or a tool such as a gauge with both hands, the operation is temporarily stopped. There was a problem that it was necessary to interrupt and turn on / off the lighting.

  Further, for example, when the worker is an elderly person or is unfamiliar with the operation of the tool, it is not easy to perform the lighting on / off operation in a dark environment, and there is a problem that the work efficiency is reduced. Further, forgetting to turn off the lighting after the work is finished, there is a risk that power is unnecessarily consumed while the lighting is on.

  In order to improve the complexity of the lighting on / off operation and to prevent forgetting to turn off the lighting, an electric tool that turns on / off the lighting in conjunction with the operation of the trigger switch has been proposed (patent) Reference 2).

By using this electric power tool, it becomes possible to turn on / off the lighting in conjunction with the operation of the tool without separately operating the switch of the lighting device.
Utility Model Registration No. 2512328 JP 10-34564 A

  However, in the electric power tool according to Patent Document 2 described above, since the lighting device is turned on / off in conjunction with the operation of the trigger switch, for example, when the work is performed in a sufficiently bright environment such as daytime. Even if it exists, there existed a problem that the lighting operation of an illuminating device will be performed in conjunction with a trigger switch. For this reason, there is a problem that unnecessary power consumption is caused and there is a possibility that the life of an illumination light source such as an LED may be shortened.

  The present invention has been made in view of the above problems. In an environment where illumination is necessary, the illumination device can be illuminated in accordance with the operation of the trigger switch. In an environment where illumination is not necessary, the trigger switch It is an object of the present invention to provide a driving tool for building that does not turn on the lighting device even if the operation is performed.

  In order to solve the above-described problems, an architectural drive tool according to the present invention includes an illumination unit installed in a tool body, a trigger switch for driving the drive unit provided in the tool body, and the trigger switch. Illumination control means for performing illumination operation of illumination light in the illumination means according to the operation, the illumination control means has an illuminance sensor for detecting ambient illuminance, and the illuminance detected by the illuminance sensor is Only when the illuminance is less than or equal to a predetermined illuminance, the lighting means is turned on and off according to the operation of the trigger switch.

  According to the driving tool for building according to the present invention, since the lighting means is turned on and off according to the operation of the trigger switch only when the illuminance detected by the illuminance sensor is equal to or less than the predetermined illuminance, The lighting on / off operation can be performed without operating a switch of a lighting device provided separately as in a conventional tool. For this reason, it is possible to reduce the operation burden associated with the lighting operation and to prevent forgetting to turn off the lighting device.

  Also, in situations where it is not necessary to use lighting, such as when the surroundings are bright, the lighting means will not be turned on even if the trigger switch is operated. It is possible to prevent consumption, and it is possible to prevent the life of the illumination light source constituting the illumination means from being shortened.

  Further, the lighting control means of the driving tool for building has a timer means, and when the trigger switch is turned off, the lighting means is turned off after a predetermined time elapses by the timer means. You may do it.

  By providing the timer means, lighting can be maintained for a while even when the trigger switch is turned off. For this reason, for example, even when the drive of the tool is slightly stopped to correct the screw position, it is possible to avoid troubles such as suddenly turning off the illumination and losing the screw. Can be improved.

  By using the driving tool for building according to the present invention, the lighting means is turned on / off according to the operation of the trigger switch only when the illuminance detected by the illuminance sensor is equal to or lower than the predetermined illuminance. It is possible to realize a reduction in the operation burden associated with the operation and prevention of forgetting to turn off the lighting device.

  Hereinafter, the drive tool for construction concerning the present invention is explained in detail using a drawing.

  FIG. 1 is a side view showing an electric impact driver which is an example of a building driving tool according to an embodiment.

  The electric impact driver 1 (driving tool) includes a main body (tool main body) 2, a grip part (tool main body) 3, a battery unit 4, a bit chuck 5, an illumination device (illuminating means) 6, and an illuminance sensor ( (Illumination control means, illuminance sensor) 7.

  The main body 2 and the grip 3 are integrally formed by a resin casing member, and the casing member is constituted by a pair of halved casings that are symmetrical. A driving mechanism (driving means) (not shown) is provided inside the main body 2, and it is possible to apply a rotational driving force and a striking force to the driver bit 8 by driving the driving mechanism. ing.

  The grip portion 3 is formed to extend downward from the rear portion of the main body portion 2, and a trigger switch 9 for performing on / off operation of rotation driving of the driver bit 8 and a driver are provided at the front portion of the grip portion 3. A rotation switching button 10 for switching the rotation direction of the bit 8 is provided. The operator can rotate the driver bit 8 by turning on the trigger switch 9 after determining the rotation direction of the driver bit 8 by the rotation switching button 10.

  The battery part 4 is provided at the lowermost end of the grip part 3. A latch (not shown) is provided in the front part (front side) of the battery unit 4, and the battery unit 4 is pulled out downward of the grip unit 3 while pushing the latch. It is possible to remove from. The removed battery unit 4 can be charged by being attached to a charger (not shown).

  A hook 3 a is provided at the lower rear portion of the grip portion 3. The operator can prevent the tool from being inadvertently dropped by gripping the grip portion 3 with the wrist or the like passed through the hook 3a.

  The bit chuck 5 is provided at the tip of the main body 2. The bit chuck 5 is provided for attaching and detaching the driver bit 8. By rotating the sleeve 5 a of the bit chuck 5 to the left with respect to the main body 2, a nail ( The driver bit 8 can be set by opening the not shown.

  On the other hand, by rotating the sleeve 5a of the bit chuck 5 in the right direction, the claw is closed and the driver bit 8 can be fixed. By operating the bit chuck 5 in this manner, various types of driver bits can be exchanged and attached, and the mounted driver bit 8 can be driven to rotate by the drive mechanism.

  The lighting device 6 is provided in the lower front of the main body 2, more specifically, in the vicinity of the boundary between the grip 3 and the main body 2 and in the upper part of the trigger switch 9. The illuminating device 6 is configured using an LED light source (see LED 1 shown in FIG. 2) as an illuminating light source, and can emit illumination light in conjunction with an on / off operation of the trigger switch 9. The detailed light emission control will be described later.

  The illuminance sensor 7 is provided on the upper part of the main body 2. The illuminance sensor 7 uses a phototransistor TR (see FIG. 2), and the phototransistor TR has a function of controlling current by an optical signal. By determining the surrounding situation (brightness) with the illuminance sensor 7, the LED light source (LED1, see FIG. 2) of the lighting device 6 is controlled to be turned on or off.

  FIG. 2 is a circuit diagram of the electric impact driver 1 including the trigger switch 9, the illuminance sensor 7, and the lighting device 6, and FIG. 3 is a block diagram showing the relationship between the functional units. is there.

  First, the circuit shown in FIG. 2 is provided with a 6-volt power supply 13 constituted by a 3-volt button battery. The power supply 13 may be configured to be supplied with power from the battery unit 4.

  The 6-volt power supply 13 is connected to the trigger switch 9, the illuminance sensor 7, and the lighting device 6. The other end of the trigger switch 9 to which the 6-volt power supply 13 is connected is provided with a current limiting resistor R1 (10 kΩ) for protecting the switch, and further a resistor R2 (1 kΩ) for preventing chattering and a capacitor C1 (0 .1 μF). Here, chattering is a phenomenon in which electrical signals are repeatedly interrupted by minute and very fast mechanical vibrations when the relay and switch contacts are switched. For this reason, by providing the resistor R2 and the capacitor C1, it is possible to stabilize chattering (signal fluctuation) that occurs when the trigger switch 9 is turned on / off.

  On the other hand, the illuminance sensor 7 includes a phototransistor TR. In the phototransistor TR, a 6-volt power source 13 is connected to the collector side through a current limiting resistor R3 (1 kΩ) for protecting the switch, and a ground is connected to the emitter side. The phototransistor TR has a structure in which current flows from the collector to the emitter when an illuminance of a certain level or more is detected. When the surroundings are bright, the output to the logic circuit (illumination control means) 14 described below is output. It is maintained in the Low state. On the other hand, when the surroundings are dark, the energization from the collector to the emitter is cut off, so that the output of Hi to the logic circuit 14 is maintained.

  The illumination device 6 includes an LED 1 that constitutes an LED light source, a transistor Q1 for performing on / off control of the LED light source (LED 1), an input current limiting resistor R4 (100 kΩ) of the transistor Q1, and a pull-down resistor R5 (100 kΩ). And a resistor R6 (4.7 kΩ) for limiting the output current of the transistor Q1. Here, the pull-down resistor R5 is a resistor provided to stabilize the voltage of the logic circuit 14 when the output is in the low state.

  LED1 is provided in the collector of transistor Q1 via resistance R6. When the output of the logic circuit 14 is set to Hi, since the base is maintained at Hi, a current flows from the collector of the transistor Q1 to the emitter, the LED 1 is turned on, and the illumination light is turned on in the illumination device 6. It will be.

  The circuit diagram shown in FIG. 2 and the block diagram shown in FIG. 3 are further provided with the above-described logic circuit 14 and timer circuit (lighting control means, timer means) 15.

The logic circuit 14 is a circuit that performs a condition determination for turning on the illumination light of the illumination device 6.
(1) When the input voltage applied via the timer circuit 15 maintains the Hi state.
(2) When the ambient condition is determined by the illuminance sensor 7 to be dark below a certain level and the input voltage maintains the Hi state.
When both conditions are satisfied, the output to the illumination device 6 is kept in the Hi state, and the LED light source (LED1) is turned on.

  In addition, the timer circuit 15 has a function of maintaining the output voltage to the logic circuit 14 at Hi for a predetermined time even when the trigger switch 9 is turned off. As shown in FIG. 2, the timer circuit 15 includes a capacitor C2 (100 μF) for the timer circuit 15, a resistor R7 (100 kΩ), and a diode D1, and even after the trigger switch 9 is turned off, A current is output to the logic circuit 14 for a predetermined time according to the capacitance of the capacitor C2, and the input voltage of the logic circuit 14 is maintained in the Hi state. Due to the capacitance stored in the capacitor C2, the LED light source (LED1) is turned off by a certain time after the trigger switch 9 is turned off.

  Note that the capacitance of the capacitor C2 in the present embodiment has a capacitance that keeps the LED light source (LED1) of the lighting device 6 on for about 10 seconds after the trigger switch 9 is turned off. However, the capacitance of the capacitor C2 is not limited to a capacity that allows the LED light source (LED1) of the lighting device 6 to continue to be lit for 10 seconds, even if it can only be lit for less than 10 seconds. It may be one that can be lit for 10 seconds or more.

  As shown in FIGS. 3 and 2, in the illumination device 6 according to the present embodiment, the illuminance sensor 7 detects that the surroundings have become darker than a certain level, and the trigger switch 9 is turned on via the logic circuit 14. In this case, the LED light source (LED1) is turned on.

  For this reason, since the input voltage to the logic circuit 14 is maintained at Hi by the illuminance sensor 7 when the surroundings are dark, the LED light source (LED1) of the lighting device 6 is interlocked with the ON / OFF operation of the trigger switch 9. Can be turned on. Therefore, the operator can perform lighting on / off processing according to the operation of the trigger switch 9 without operating the switch of the illumination device separately provided as in the conventional tool, and the operation associated with the illumination operation. It becomes possible to reduce the burden and prevent forgetting to turn off the lighting device.

  In addition, since the driving tool according to the present invention is provided with the timer circuit 15, even when the trigger switch 9 is turned off in the darkened state, the trigger switch 9 is turned off. The LED light source (LED1) is continuously turned on for about 10 seconds (more specifically, until electrons stored in the capacitor C2 are emitted).

  For this reason, even if the trigger switch 9 is turned off, the lighting can be kept on for a while. For example, when the driving of the tool is slightly stopped to correct the screw position, etc. Even in such a case, it is possible to avoid troubles such as suddenly turning off the illumination and losing sight of the screw, and it is possible to improve workability.

  Further, in a bright environment, the output voltage to the logic circuit 14 is kept low by the illuminance sensor 7, so that the LED light source (LED 1) of the lighting device 6 is turned off regardless of the on / off operation of the trigger switch 9. It becomes the state. Therefore, in a situation where the surroundings are bright and it is not necessary to use illumination, it is possible to prevent the LED light source (LED1) from being inadvertently turned on and causing unnecessary power consumption, and the LED light source ( It can prevent that the lifetime of illumination light sources, such as LED1), becomes short.

  As mentioned above, although the drive tool for construction concerning the present invention was explained in detail using a drawing, the drive tool for construction concerning the present invention is not limited to the contents shown in the embodiment mentioned above. . It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention.

  For example, although the case where the LED light source (LED1) is used as the illumination light source has been described in the above embodiment, the illumination light source is not limited to the LED light source, and other light sources such as a light bulb are used. It may be a thing.

  Further, in the building driving tool according to the embodiment, the lighting device 6 is placed in front of the lower portion of the main body 2, more specifically, near the boundary between the grip 3 and the main body 2 and above the trigger switch 9. Although the structure provided in a part was demonstrated, the installation position of the illuminating device 6 is not limited to this place. For example, the illumination light is emitted toward the tip of the driver bit 8 or the like even at the upper front position of the main body 2 (for example, the upper position of the bit chuck 5) or the front side of the main body 2. The lighting device 6 may be installed at any location as long as it is a position that does not interfere with the work.

  Furthermore, in embodiment mentioned above, although demonstrated using the electric impact driver as an example of the drive tool for construction, the drive tool for construction which concerns on this invention is not limited to an electric impact driver. . As long as the driving tool for construction is a tool having a structure for rotating and driving a bit installed at the tip of the tool, even if it is driven electrically, it is driven using compressed air. In addition to the driver tool, various tools such as a tightening tool, a driving tool, and a drilling tool are included in the drive tool for building according to the present invention.

It is the external appearance side view which showed the electric impact driver which concerns on embodiment. It is the figure which showed the circuit diagram in the electric impact driver which concerns on embodiment. It is the block diagram which showed the relationship of the various function parts in the electric impact driver which concerns on embodiment.

Explanation of symbols

1 ... Electric impact driver (drive tool)
2 ... Body part (tool body)
3 ... Grip part (tool body)
3a ... hook 4 ... battery part 5 ... bit chuck 5a ... sleeve 6 ... lighting device (lighting means)
7 ... Illuminance sensor (lighting control means, illuminance sensor)
8 ... Driver bit 9 ... Trigger switch 10 ... Rotation switching button 13 ... 6V power supply 14 ... Logic circuit (lighting control means)
15 ... Timer circuit (lighting control means, timer means)
C1, C2 ... Capacitor D1 ... Diode LED1 ... LED light source Q1 ... Transistors R1, R2, R3, R4, R5, R6, R7 ... Resistor TR ... Phototransistor

Claims (2)

Lighting means installed in the tool body;
A trigger switch for driving a driving means provided in the tool body;
Illumination control means for controlling illumination light in the illumination means in accordance with the operation of the trigger switch,
The illumination control means has an illuminance sensor that detects ambient illuminance, and the illumination means is turned on / off according to the operation of the trigger switch only when the illuminance detected by the illuminance sensor is equal to or less than a predetermined illuminance. A drive tool for construction, characterized by The illumination control means has timer means,
2. The architectural driving tool according to claim 1, wherein when the trigger switch is turned off, the lighting means is turned off after a predetermined time has elapsed by the timer means.

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