JP2018202536A - tool - Google Patents

Abstract

To provide a tool which can relatively freely set a direction in which a light source emits light, and can notify a user with high visibility.SOLUTION: A tool includes a housing 11, a light source 28 which is arranged inside the housing 11 and of which lighting is controlled so as to notify of a state of a machine, and a light guide part 30 which guides light of the light source 28. The light guide part 30 is arranged along a surface of the housing 11. Thus, the light of the light source 28 is guided by the light guide part 30 and is emitted from a surface of the housing 11.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a tool provided with a light source for notifying the state of a machine.

  Conventionally, a tool provided with a light source such as an LED in order to notify the state of the machine is known (for example, see Patent Document 1).

  For example, the remaining amount of consumables is notified by turning on or blinking the light source. Specifically, a tool for notifying when the remaining amount of fasteners is equal to or less than a certain number is known in order to prevent the fasteners from being knocked out or being interrupted.

  Further, the remaining amount of the battery is notified by turning on or blinking the light source. Specifically, a tool for preventing interruption of work by notifying the necessity of charging when the remaining amount of the battery becomes a certain number or less is known.

  In addition, the abnormality of the machine is reported by turning on or blinking the light source. Specifically, a tool for notifying an abnormal state when the machine becomes hot or the motor is locked is known. This notification can warn the user of an abnormal state, thereby reducing the risk that the machine will continue to be used in the abnormal state and the machine will fail.

JP 2009-184075 A

  However, since such a light source is mounted on the substrate, the direction in which the light source emits light is naturally limited. For this reason, it is difficult to provide a light source at a position that enters the user's field of view during work. If the position of the light source is out of the user's field of view, the user may not be aware of the lighting or blinking of the light source and may continue to work.

  In addition, since it is difficult to visually recognize lighting and blinking of the light source under direct sunlight, there is a high possibility that the user may continue working without noticing the notification.

  If the user continues the operation without noticing the notification, the consumables and the battery run out during the operation and the operation must be interrupted, resulting in a decrease in work efficiency. In addition, when the user continues working without noticing the notification of the machine abnormality, it continues to be used in an abnormal state, causing a failure.

  In view of the circumstances as described above, it is an object of the present invention to provide a tool that can set a direction in which a light source emits light relatively freely and can realize notification with good visibility for a user.

  The present invention has been made to solve the above-described problems, and includes a housing, a light source disposed inside the housing and controlled to be turned on to notify the state of the machine, and light from the light source. And a light guide part for guiding light, wherein the light guide part is arranged along a surface of the housing.

  The present invention is as described above, and includes a light source that is disposed inside the housing and controlled to be turned on to notify the state of the machine, and a light guide unit that guides light from the light source. Are arranged along the surface of the housing. According to such a configuration, by extending the light guide portion along the surface of the housing, the direction in which the light source emits light can be set relatively freely even when the arrangement of the light source is limited. It is possible to realize notification with high visibility for the user. In addition, since a wide range of light can be emitted without increasing the number of light sources such as LEDs, the structure of the light emitting part can be simplified and the manufacturing cost can be suppressed.

It is the perspective view which looked at the tool from diagonally forward. It is the perspective view which looked at the tool from diagonally backward. It is sectional drawing of a tool. It is the A section enlarged view shown in FIG. It is a perspective view of a light guide part. FIG. 5 is a cross-sectional view (partial) taken along line BB shown in FIG. It is the perspective view which looked at the tool concerning modification 1 from the slanting back. It is the perspective view which looked at the tool concerning modification 2 from back diagonally.

  Embodiments of the present invention will be described with reference to the drawings. In the following description, as the tool 10, a driving tool for injecting a fastener (in this embodiment, a U-shaped staple) from the injection port 20a will be described as an example. However, the driving tool is only an example of the tool 10, and the present invention can be applied to various known tools 10.

  Although the kind of applicable tool 10 is not specifically limited, What is suitable for this invention is a portable power tool. Further, it is desirable to provide a power source for turning on the light source 28 described later, and the power source is inevitably provided in the tool 10 in which the battery pack 26 can be attached to and detached from the tool body. The tool 10 according to this embodiment is an electric tool in which an operator holds the grip 21, and the battery pack 26 is attached to and detached from one side of the grip 21, and the output unit 20 is provided on the other side of the grip 21. It is a rechargeable tool. In such a tool 10, the operator's line of sight is directed toward the output unit 20, and if the light source 28 is disposed around the battery pack 26 as a power source, the light source 28 may be out of the operator's field of view. One of the features of the present invention is that the visibility of the light source 28 can be improved even in such a case.

  Specifically, the tool 10 according to the present embodiment is covered with a housing 11 as shown in FIG. The tool 10 includes an output unit 20, a grip 21, a magazine 23, a motor housing unit 24, and a battery mounting unit 25.

  The output unit 20 is a part that houses a driver (not shown) for driving out a fastener. The driver can slide in the longitudinal direction of the output unit 20. At the tip of the output unit 20, an injection port 20a is opened, and a fastener before launching is waiting in front of the injection port 20a. When a trigger 22 which will be described later is operated and the driver slides in the direction of the injection port 20a, the fastener waiting in front of the injection port 20a is driven out of the injection port 20a by the driver and driven into the driven material. ing.

  The grip 21 is a bar-shaped part that is gripped when an operator uses the tool 10. The grip 21 is connected to the output unit 20 so as to be substantially orthogonal. Specifically, the grip 21 is connected to the rear of the output unit 20 when the output unit 20 is viewed in the fastener launching direction. The grip 21 is provided with a trigger 22 for operating the tool 10. The trigger 22 is disposed at a position where an index finger is applied when the operator grips the grip 21. When the operator pulls and operates the trigger 22, the micro switch 22a (see FIG. 3) built in the grip 21 is turned on. When the micro switch 22a is turned on, an electrical signal is transmitted to the control board 27, the motor 24a is driven and controlled by the control board 27, the tool 10 is operated, and the fastener is driven.

  The magazine 23 is a part for loading fasteners. In the present embodiment, a connected fastener in which fasteners are connected in a bar shape can be loaded into the magazine 23. The magazine 23 is connected so as to be substantially orthogonal to the output unit 20, and is disposed substantially parallel to the grip 21. Specifically, the magazine 23 is connected to the front side of the output unit 20 when the output unit 20 is viewed in the fastener launching direction. The front end of the magazine 23 communicates with the output unit 20 inside, and a fastener can be supplied to the front end of the output unit 20 (near the injection port 20a).

  The motor accommodating portion 24 is provided adjacent to the magazine 23 and accommodates a motor 24a as shown in FIG. The motor 24a is a drive source for operating the tool 10, and the rotation of the motor 24a is controlled by a control board 27 described later. In the present embodiment, when the motor 24a rotates, the driver performs a driving operation and the driver returns to the standby position.

  The battery mounting part 25 is a part for making the battery pack 26 detachable. The battery mounting portion 25 is provided at the lower end of the grip 21 (the end opposite to the output portion 20). In other words, the output unit 20 is connected to one end of the grip 21, and the battery mounting unit 25 is connected to the other end.

  In the present embodiment, the battery pack 26 is slid on the lower surface of the battery mounting portion 25 and can be attached and detached. Although not particularly illustrated, a latch is provided on the upper surface of the battery pack 26 so as to be able to protrude and retract, and the battery pack 26 is attached to the tool 10 by engaging the latch with the lower surface of the battery mounting portion 25. When the battery pack 26 is attached to the tool 10, the battery pack 26 and the tool 10 are electrically connected, and the power stored in the battery pack 26 can be used by the tool 10.

  The battery mounting part 25 has a built-in control board 27 for controlling the operation of the tool 10. As shown in FIG. 3, the front surface of the control board 27 faces the grip 21, and the rear surface faces the battery pack 26 side. Various electronic components are mounted on the surface facing the grip 21, for example, a light source 28 composed of LEDs is mounted. A terminal for electrically connecting to the battery pack 26 is provided on the back surface facing the battery pack 26 side.

  The light source 28 mounted on the control board 27 is controlled to be lit to notify the state of the machine.

  For example, when it is detected that the number of fasteners in the magazine 23 is low, the control board 27 turns on or blinks the light source 28. This can prompt the operator to load the fastener. When this type of tool 10 is used, the work is often performed by manually pressing the workpiece. For this reason, if the fastener is broken during the work, it is necessary to release the hand once from the material to be driven in order to load the fastener, which causes a significant reduction in work efficiency. In this regard, when it is notified that the remaining amount of the fastener is low, the operator can load the fastener in advance, so that the situation where the fastener is insufficient during the work can be avoided, and the work efficiency is improved. Further, it is possible to prevent unintentional striking without noticing that the fastener has been lost.

  In addition, when it is detected that the battery pack 26 is fully charged, the control board 27 turns on or blinks the light source 28. Thereby, it is possible to prompt the operator to replace or charge the battery pack 26. That is, work efficiency can be improved by preventing work interruptions as much as possible.

  Further, the control board 27 turns on or blinks the light source 28 when an abnormality of the machine is detected, such as when the machine becomes hot or the motor 24a is locked. Thereby, since abnormality can be alert | reported to an operator, an operator can grasp | ascertain the state of a machine and can be useful for failure prevention of a machine.

  Note that the above notification is only an example, and other information may be notified by the light source 28.

  Moreover, you may make it change the aspect of lighting or blinking for every information to alert | report. For example, a multicolor LED may be used as the light source 28, and the emission color may be changed according to the notification content. Specifically, when notifying the machine abnormality, “red” is notified, and when displaying the remaining amount of the fastener or the battery pack 26, “blue” or “green” is notified. Good. At this time, as the multicolor LED, a unitized multicolor LED may be used, or a plurality of LEDs of different colors may be used in combination.

  By the way, since the light source 28 described above is disposed inside the housing 11, the light does not reach the outside as it is. For this reason, in this embodiment, the light guide part 30 which guides the light of the light source 28 is provided.

  The light guide unit 30 according to the present embodiment is made of a transparent or translucent resin, and allows the light from the light source 28 to enter and diffuses the incident light inside to emit light on the surface. It is a member.

  As shown in FIG. 2, the light guide portion 30 is disposed along the surface of the housing 11. Specifically, the light guide unit 30 is disposed on the rear surface of the motor housing unit 24 (the rear surface as viewed in the fastener launch direction). In other words, the light guide 30 is disposed on the surface of the housing 11 that faces the grip 21. The light guide 30 is a rod-shaped member as shown in FIG. 5 and is disposed along the longitudinal direction of the grip 21.

  As shown in FIG. 5, the light guide unit 30 includes an incident unit 31 and an output unit 32.

  The incident part 31 is a part for allowing light from the light source 28 to enter, and includes an incident surface 31 a facing the light source 28. In the present embodiment, in order to ensure a wide incident surface 31a, the incident portion 31 is formed in a shape that spreads from the bottom.

  The emission part 32 is a part for emitting the light of the light source 28, and extends from the incident part 31 so as to be continuous with the incident part 31. The light emitting portion 32 according to the present embodiment has a refracted shape so as to follow the surface of the housing 11, and includes an intermediate portion 33 and a straight portion 34. Each of the intermediate portion 33 and the straight portion 34 has a straight bar shape, and is formed with a substantially constant width and thickness. The intermediate part 33 and the straight part 34 are connected so as to form an obtuse angle. An engaging portion 35 is provided on the back side of the straight portion 34 (the side facing the housing 11). The engaging portion 35 is a portion that is held by the housing 11 when the light guide portion 30 is assembled to the housing 11. In the present embodiment, an engaging groove 36 is provided between the engaging portion 35 and the straight portion 34 along the longitudinal direction of the engaging portion 35.

  The surface of the emission part 32 assembled to the housing 11 is exposed to the outside as shown in FIG. 4, and serves as an emission surface 32 a that emits light incident on the light guide part 30. The exit surface 32a is subjected to surface processing for diffusing light. In addition, a reflection groove 32 b is formed inside the emission part 32. By forming the reflection groove 32b, when light is incident on the light guide section 30, a difference in brightness occurs between the reflection groove 32b and the other portions, so that the operator can illuminate the light source 28 (light guide section 30). It is easy to see whether or not. Further, if a plurality of reflection grooves 32b are provided as in the present embodiment, the number of light emitting portions can be increased, so that it is easy to visually recognize without increasing the number of light sources 28 such as LEDs. In addition, since the light guide part 30 is easier to improve visibility if the light is refracted and diffused only around the emission part 32, the transparency of the incident part 31 near the light source 28 (control board 27) is made as high as possible. It is preferable that the whole or a part of the emitting portion 32 (for example, the periphery of the reflection groove 32b) is fogged like ground glass.

  The housing 11 according to the present embodiment is configured by combining a pair of divided pieces 12 that can be divided into left and right. The light guide 30 described above is assembled to the housing 11 by being held from both sides by the pair of divided pieces 12 as shown in FIG. Moreover, the light guide part 30 is arrange | positioned along the joint surface 13a (division line) of a pair of division | segmentation piece 12, as shown in FIG.

  The joint part of a pair of division | segmentation piece 12 has a double rib structure as shown in FIG. That is, the pair of divided pieces 12 includes two protrusions, a bonding protrusion 13 and a holding protrusion 14 that face each other.

  The joint protrusion 13 is provided on the inner side of the holding protrusion 14 and has a joint surface 13a that joins each other. A pair of division | segmentation piece 12 is provided with the uneven | corrugated shape which mutually fits in this joint surface 13a. That is, a concave shape 13b, which is a groove formed along the longitudinal direction of the joint surface 13a, is formed on one divided piece 12, and a convex shape 13c that fits into the concave shape 13b is formed on one divided piece 12. Is formed. By fitting the concave shape 13b and the convex shape 13c, water or the like can be prevented from entering the inside of the housing 11, and the waterproof performance on the joint surface 13a is enhanced.

  Further, the holding protrusion 14 is provided on the outer side of the bonding protrusion 13 and is engaged with the engaging groove 36 of the light guide portion 30. Since the holding projection 14 engages with the engagement groove 36, a wall is formed on the outer side of the joining projection 13, so that intrusion of water or the like into the housing 11 can be further prevented.

  A dovetail assembly groove 15 is formed between the joint protrusion 13 and the holding protrusion 14. The assembly groove 15 is for fitting the engaging portion 35 of the light guide portion 30. When the light guide 30 is assembled to the housing 11, the engaging portion 35 is fitted into the assembly groove 15 before the pair of divided pieces 12 are joined, and then the pair of divided pieces 12 are joined to sandwich the light guide 30. Fix it.

  By the way, as shown in FIG. 4, in the light guide portion 30, the incident portion 31 faces the light source 28 inside the housing 11, and the emission portion 32 is attached to the surface of the housing 11 outside the housing 11. For this reason, the light guide 30 is attached so as to penetrate the housing 11. In other words, the housing 11 is formed with a through hole 17 for allowing the light guide 30 to penetrate therethrough. In such a configuration, water or the like may enter the housing 11 from the through hole 17. In order to prevent this, a seal member 39 for filling a gap with the housing 11 is attached to the light guide portion 30 according to the present embodiment at a position penetrating the housing 11. The seal member 39 is assembled in the seal holding groove 16 formed on the inner side surface of the through hole 17. As shown in FIG. 5, the light guide portion 30 is not provided with a groove or protrusion for positioning the seal member 39. This is because when the grooves and the protrusions are provided, the light reflected in the light guide unit 30 is affected by the grooves and the protrusions.

  As described above, according to the present embodiment, the light source 28 that is disposed inside the housing 11 and is controlled to be turned on to notify the state of the machine, and the light guide unit 30 that guides light from the light source 28. , And the light guide portion 30 is disposed along the surface of the housing 11. According to such a configuration, since the light guide unit 30 emits light when the light source 28 emits light, the light in the housing 11 can be guided to the outside of the housing 11. In addition, by extending the light guide 30 along the surface of the housing 11, the direction, position, area, and the like of the light source 28 can be set relatively freely. Can be realized.

  For example, in the present embodiment, when the light source 28 is turned on as it is, the light is turned on in the vicinity of the battery mounting portion 25. However, since the worker is working while looking at the vicinity of the output unit 20 (ejection port 20a), it may be difficult to notice the light of the light source 28 that is lit at a position away from the output unit 20 (ejection port 20a). . In this regard, according to the present embodiment, the light from the light source 28 can be guided to the vicinity of the output unit 20 (the exit 20a) by the light guide unit 30. And since it can be made to light in a high range, the light of the light source 28 tends to enter an operator's visual field. In other words, even a worker who is working can be configured to easily recognize the light from the light source 28.

  The light guide 30 includes an incident part 31 having an incident surface 31 a facing the light source 28, and an emission part 32 extending from the incident part 31. The incident part 31 is a light source inside the housing 11. 28, the emitting portion 32 is attached to the surface of the housing 11 outside the housing 11. According to such a configuration, the light in the housing 11 can be reliably guided to the outside of the housing 11.

  Further, a seal member 39 for filling a gap with the housing 11 is attached to the light guide 30 at a position penetrating the housing 11. According to such a structure, even when the light guide part 30 penetrates the housing 11, waterproof performance can be ensured.

  The light guide 30 is a rod-like member disposed along the longitudinal direction of the grip 21. According to such a configuration, light can be guided to a position away from the light source 28 by making use of straightness of light. For example, the light can be guided to a position close to the output unit 20 (injection port 20a), and the operator can easily notice the lighting or flashing of the light source 28.

  In addition, the housing 11 is configured by combining a pair of divided pieces 12, and the light guide unit 30 is disposed along the joint surface 13 a of the pair of divided pieces 12. According to such a configuration, since the light guide unit 30 can be sandwiched and held by the pair of divided pieces 12, the light guide unit 30 can be easily assembled.

  Further, the pair of divided pieces 12 has a double rib structure including two protrusions facing each other. According to such a configuration, even when the light guide unit 30 is sandwiched and held by the pair of divided pieces 12, it is possible to effectively prevent water from entering from the held part.

  Moreover, the battery mounting part 25 for making the battery pack 26 detachable is provided, and the battery mounting part 25 has a built-in control board 27 on which the light source 28 is mounted, and the light guide part 30 includes the battery mounting part. 25 extends from the inside to the outside. According to such a configuration, the battery pack 26 is directly connected to the control board 27 and the light source 28 such as an LED is directly mounted on the control board 27 without arranging the power supply board or the LED board at another position. Can do. Therefore, the number of parts can be reduced and the machine can be downsized. Further, even when the configuration is simplified as described above, the light emitting portion 30 extends from the battery mounting portion 25, so that the light emission position can be freely set.

  Moreover, the light guide part 30 is arrange | positioned so that the operator who hold | gripped the tool 10 may be faced, as shown in FIG. For this reason, it can be set as the structure where it is easy to notice the light of the light source 28 even if it is a worker in work.

  FIG. 7 is a diagram according to the first modification of the present embodiment. As shown in FIG. 7, a collar 40 that covers the light guide 30 incompletely may be provided. By providing the collar portion 40 in this way, it is possible to easily notice the lighting or flashing of the light source 28 even under direct sunlight. That is, by providing the collar portion 40, a place where the light guide portion 30 is not exposed to sunlight is formed (that is, a shadow is formed), so that the lighting or blinking of the light source 28 is easily visually recognized.

  Moreover, FIG. 8 is a figure which concerns on the modification 2 of this embodiment. As shown in FIG. 8, the light guide unit 30 may be provided at a place other than the back surface of the motor housing unit 24. For example, the light guide unit 41 may be provided on the upper surface of the output unit 20 (the surface opposite to the surface to which the grip 21 is connected). In addition, the light guide 42 may be provided on the back surface of the tool 10 (the front surface as viewed in the fastener driving direction).

  In addition, as shown to the light guide part 45 of FIG. 1, you may arrange | position the light guide part 45 so that light may be radiate | emitted toward the front-end | tip direction of the tool 10. FIG. In other words, even if the light guide 45 is arranged so as to illuminate the tip of the tool 10 (the part that contacts the member to be constructed. In the case of a driving tool as shown in FIG. 1, the part provided with the injection port 20a). Good. At this time, you may arrange | position the light guide part 45 so that not only the front-end | tip of the tool 10 but the surface of the member to be constructed may be illuminated. If comprised in this way, since the operator is always gazing at the tip of the tool 10, notification that is easily recognized by the operator can be realized. Further, the light guide unit 45 may be used not only to notify information but also to irradiate the work site at the tip of the tool 10. At this time, if the light guide 45 is used to illuminate the tip from a wide range, the surface of the member is less likely to be shaded, making it easy to see the work site.

DESCRIPTION OF SYMBOLS 10 Tool 11 Housing 12 Dividing piece 13 Joining protrusion 13a Joining surface 13b Concave shape 13c Convex shape 14 Holding protrusion 15 Assembly groove 16 Seal holding groove 17 Through-hole 20 Output part 20a Injection port 21 Grip 22 Trigger 22a Micro switch 23 Magazine 24 Motor accommodation Part 24a motor 25 battery mounting part 26 battery pack 27 control board 28 light source 30 light guide part 31 incident part 31a incident surface 32 emitting part 32a emitting surface 32b reflecting groove 33 intermediate part 34 straight part 35 engaging part 36 engaging groove 39 seal Member 40 collar part 41 light guide part 42 light guide part 45 light guide part

Claims (10)

A housing;
A light source disposed inside the housing and controlled to be lit to notify the state of the machine;
A light guide for guiding the light of the light source;
With
A tool characterized in that the light guide is arranged along the surface of the housing. The light guide unit includes an incident part having an incident surface facing the light source, and an emission part extending from the incident part,
The incident part faces the light source inside the housing;
The tool according to claim 1, wherein the emission portion is attached to a surface of the housing outside the housing.   The tool according to claim 2, wherein a reflection groove is formed inside the emitting portion.   The tool according to claim 2 or 3, wherein a seal member for filling a gap with the housing is attached to the light guide portion at a position penetrating the housing.   The said light guide part is a rod-shaped member arrange | positioned along the longitudinal direction of a grip, The tool of any one of Claims 1-4 characterized by the above-mentioned. The housing is configured by combining a pair of divided pieces,
The tool according to any one of claims 1 to 5, wherein the light guide part is disposed along a joint surface of the pair of divided pieces.   The tool according to claim 6, wherein the pair of divided pieces has a double rib structure including two protrusions facing each other. A battery mounting part for making the battery pack detachable,
The battery mounting part has a built-in control board on which the light source is mounted,
The tool according to claim 1, wherein the light guide part extends from the inside of the battery mounting part to the outside.   The tool according to any one of claims 1 to 8, wherein the light guide unit is disposed so as to face an operator holding the tool.   The tool according to any one of claims 1 to 9, wherein the light guide unit is arranged to emit light toward a tip direction of the tool.

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