JP2019063926A - tool - Google Patents

Abstract

To provide a tool which can be manufactured at low costs and downsized.SOLUTION: An electric power tool comprises a switch 30 at a boundary part between an electric power tool main body and a grip. The switch 30 has a trigger 300 to be hydraulically operated by a user, a turning part 310 which is mounted with the trigger 300 and a storage case 340 for storing a substrate 370 and the like. The turning part 310 is configured to be turnable in a longitudinal direction of the electric power tool with a shaft part 330 as a fulcrum. On a front side of the substrate 370 are mounted Hall ICs 384a and 384b having forward/reverse switching function, a wake-up switch 380 and a load sensor 382 respectively, from the upper part toward a lower part thereof. This allows the electric power tool 100 to be manufactured at lower costs and further downsized in comparison with a tool which is provided with a plurality of substrates.SELECTED DRAWING: Figure 4

Description

  The present invention relates to tools.

  Conventionally, as a trigger switch of a general power tool, a stroke type trigger switch whose resistance value changes according to an operation stroke is used (see, for example, Patent Document 1). However, in the case of the stroke type trigger switch, since the stroke amount at the time of pull operation by the user is about 10 mm, the trigger switch itself may become large.

  Therefore, in recent years, an electric power tool using a load sensor has been proposed as a trigger switch capable of realizing a low stroke. Usually, the load sensor is mounted on a substrate, and the substrate is assembled in a housing that constitutes the upper part of the grip.

  In addition, the electric power tool is provided with a forward / reverse switching operation mechanism for switching the rotation direction of the tip tool (motor) to forward rotation or reverse rotation. The forward / reverse switching operation mechanism has, for example, an operation unit provided on each side of the housing, and a forward / reverse switching switch that is turned on / off by the operation of the operation unit. The forward / reverse switching switch is mounted on a substrate different from the substrate on which the load sensor described above is mounted.

Patent No. 5611780 gazette

  However, the conventional power tool described above has the following problems. That is, since the substrate on which the load sensor is mounted and the substrate on which the forward / reverse switching switch is mounted are separate substrates, there is a problem that the cost is increased. In addition, since it is necessary to store the substrate on which the load sensor is mounted and the substrate on which the forward / reverse switch is mounted in separate spaces in the housing, there is also a problem that the power tool can not be miniaturized. Furthermore, since a waterproof structure for each substrate is required, there is a problem such as an increase in installation space and complexity.

  Then, this invention is made in view of the said subject, The objective is to provide the tool which can attain low cost and size reduction.

  The tool according to the present invention is a tool including a switch and a motor driven based on the operation of the switch, wherein the switch is an operation unit operated by a user and a pressing force by the operation of the operation unit. A load sensor for detecting a corresponding load, a forward / reverse switching unit for switching the rotation direction of the motor to forward rotation or reverse rotation, and a substrate on which each of the load sensor and the forward / reverse switching unit is mounted It is.

  In the present invention, each of the load sensor and the forward / reverse switching unit is mounted on the same substrate. Therefore, in the present invention, it is not necessary to prepare, for example, a substrate on which the load sensor is mounted and a substrate on which the forward / reverse switching unit is mounted. Furthermore, it is not necessary to provide a space for mounting each substrate in the housing.

  According to the present invention, since the load sensor and the forward / reverse switching switch are mounted on the same substrate, the cost and size of the tool can be reduced as compared with the case where the substrates are separately provided.

It is a figure showing an example of composition of an electric tool concerning a 1 embodiment of the present invention. It is a side view showing an example of composition of a switch. It is a perspective view showing an example of composition of a switch. It is a sectional view showing an example of composition of a switch. It is a cross-sectional perspective view which shows the structural example of a switch. It is a figure which shows the structural example of the board | substrate with which a load sensor etc. are mounted, and a forward / reverse switching mechanism. It is a figure for demonstrating the operation example of the switch at the time of use of an electric tool (the 1). It is a figure for demonstrating the operation example of the switch at the time of use of an electric tool (the 2). It is a figure which shows the structural example of another forward / reverse switching mechanism. It is a figure which shows the structural example of another forward / reverse switching mechanism.

  The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

[Configuration Example of Power Tool 100]
FIG. 1 shows an example of the configuration of an electric power tool 100 according to an embodiment of the present invention. In FIG. 1, the left side of the power tool 100 is the front surface of the power tool 100, and the right side of the power tool 100 is the rear surface of the power tool 100. The front side of the power tool 100 is the left side of the power tool 100, and the back side of the power tool 100 is the right side of the power tool 100.

  As shown in FIG. 1, the electric power tool 100 is an impact driver that uses a DC brushless motor (hereinafter referred to as a motor) 60 as a driving source. The electric power tool 100 has a housing 10 in which a motor is built in, as well as constituting its outer shape. The housing 10 is composed of a front housing 10 a and a rear housing 10 b, and has a half structure that can be divided at the front and back of the power tool 100.

  The housing 10 has a power tool body 12, a grip 14, and a battery pack attachment portion 16. A motor 60 indicated by a broken line is built in the tubular power tool body 12. A cooling fan, a spindle, an impact mechanism, an anvil, and the like (not shown) are arranged in series from the rear surface to the front surface of the power tool body 12 coaxially with the rotation axis of the motor 60.

  An output shaft 18 connected to the anvil is provided on the front surface of the power tool body 12. A driver bit 90 (tip tool) is detachably attached to the output shaft 18 at the output shaft 18. An LED light 24 for illuminating a work site or the like is provided on the front surface of the power tool body 12 and around the output shaft 18.

  A left side forward / reverse switching operation unit 50L for switching the rotational direction of the motor 60 (driver bit 90) to forward rotation or reverse rotation is provided on the side surface portion of the power tool body 12. Although not shown in FIG. 1, the right side normal / reverse switching operation unit 50 </ b> R is provided on the right side of the power tool body 12. For example, when the normal mode is set, when the trigger 300 described later is pulled after the right forward / reverse switching operation unit 50R is pressed, the motor 60 rotates forward and the left forward / reverse switching operation unit 50L is pressed before the trigger When 300 is pulled, the motor 60 rotates in the reverse direction. When the reverse mode (quick reverse mode) is set, the motor 60 rotates forward when only the trigger 300 is pulled, and either the left forward / reverse switching operation unit 50L or the right forward / reverse switching operation unit 50R is pressed. In this state, when the trigger 300 is pulled, the motor 60 is reversely rotated. The left side normal / reverse switching operation unit 50L and the right side normal / reverse switching operation unit 50R constitute a part of a forward / reverse switching mechanism 50 described later.

  The grip 14 extends substantially vertically from the lower portion of the power tool body 12 and functions as a portion for the user to grip the power tool 100.

  The switch 30 is a boundary between the power tool body 12 and the grip 14 and is provided on the front side of the power tool body 12 (grip 14). More specifically, when the user grips the grip 14, the user's index finger is placed at the position where the user grips the grip 14. The switch 30 has a function of starting and stopping the motor 60 and adjusting the rotational speed of the motor 60 based on the pressing operation by the user. The details of the switch 30 will be described later.

  The battery pack attachment portion 16 is provided at the lower part of the grip 14 and the battery 70 is detachably attached. For example, the battery 70 is a lithium ion battery and the voltage is 18V. The battery 70 is provided with a fuel gauge (not shown) so that the remaining amount of the battery can be visually recognized. In addition, a mode switching button 20 for switching the operation mode and a light button 22 for adjusting the brightness of the light 24 in three stages (bright / middle / deactivated) on the front upper surface portion of the battery pack attachment portion 16. Is provided.

[Configuration Example of Switch 30]
FIG. 2 is a plan view showing an example of the configuration of the switch 30, and FIG. 3 is a perspective view thereof. FIG. 4A is a plan view showing an example of the cross-sectional configuration of the switch 30, and FIG. 4B is an enlarged view of the main part thereof. FIG. 5 is a perspective view showing an example of the sectional configuration of the switch 30. As shown in FIG. In FIGS. 2 to 5, the left side of the switch 30 is the front surface of the switch 30, and the right side of the switch 30 is the rear surface of the switch 30. 6A and 6B are diagrams for explaining an example of the configuration of the substrate 370 on which the wakeup switch 380, the load sensor 382, and the Hall ICs 384a and 384b are mounted. 6A and 6B, the right side of the substrate 370 is the left side of the power tool 100, and the left side of the substrate 370 is the right side of the power tool 100.

  As shown in FIGS. 2 to 5, the switch 30 includes a trigger 300, a pivoting portion 310, a storage case 340, a pressing portion 360, a substrate 370, a wakeup switch 380, a load sensor 382, and a hole. IC 384a and 384b are provided. The trigger 300 constitutes an example of the operation unit, and the wakeup switch 380, the load sensor 382, and the Hall ICs 384a and 384b constitute an example of the detection unit.

  First, for convenience of description, the forward / reverse switching mechanism 50A for switching the outputs of the Hall ICs 384a and 384b will be described. The forward / reverse switching mechanism 50A is a mechanism for switching the rotation direction of the motor 60 in the forward direction or in the reverse direction. As shown in FIG. 6, the forward / reverse switching mechanism 50 </ b> A includes a forward / reverse switching operation unit 500 and a magnet 510.

  The forward / reverse switching operation unit 500 includes a first operation member 500a extending in the left-right direction (width direction) of the power tool main body 12, and a second operation member extending downward from a substantially central portion in the left-right direction of the first operation member 500a. It is comprised from the operation member 500b. As shown in FIG. 1, the portion of the first operation member 500a that protrudes from the left side of the power tool main body 12 functions as the left forward / reverse switching operation unit 50L, and the power tool main body of the first operation member 500a. A portion protruding from the right side portion 12 functions as the right forward / reverse switching operation unit 50R.

  The magnet 510 is attached to the second operation member 500b, and is configured to move forward of one of the Hall ICs 384a and 384b as the forward / reverse switching operation unit 500 moves in the left-right direction. Specifically, when the left normal-reverse switching operation unit 50L is operated by the user, the magnet 510 is positioned in front of the Hall IC 384b. On the other hand, when the right forward / reverse switching operation unit 50R is operated by the user, the magnet 510 is located in front of the Hall IC 384a.

  Subsequently, the switch 30 will be described. As shown in FIGS. 2 to 5, the trigger 300 is a member for receiving a pressing force based on a pulling operation by the user, and the power is turned on / off according to the pulling operation by the user, and the number of rotations of the motor Adjust the The trigger 300 is a box that is open at the rear side, and is attached to the main body 311 via an attachment portion 302 provided on the rear side. The trigger 300 covers the front side of the main body 311, and the front of the trigger 300 has a curved shape corresponding to the shape of the user's finger. The user pulls the trigger 300 by touching a predetermined operation position on the front surface of the trigger 300.

  The pivoting portion 310 has a main body portion 311, a first pivoting member 320, and a second pivoting member 322. The main body portion 311 is a member for transmitting the pressing force by the pulling operation of the trigger 300 to the first pressing member 350 and the second pressing member 352. The upper end side (one end side) of the main body portion 311 is rotatably supported by the shaft portion 330, and the front and back direction D of the power tool 100 with the shaft portion 330 as a fulcrum in accordance with the pressing operation of the trigger 300 by the user. (Hereinafter, it may be called the stroke direction D.) It rotates. More specifically, the main body portion 311 as the pivoting portion 310 is disposed movably in directions approaching and away from the wakeup switch 380 and the load sensor 382 by the operation of the trigger 300 by the user. .

  The shaft 330 is inserted into the through hole 311 a formed in the main body 311, the through hole 342 a formed in the bearing 342 of the storage case 340, and the through hole 343 a formed in the bearing 343 of the storage case 340. Be done. At this time, in the state where a gap is provided between the shaft portion 330 and the main body portion 311 and no gap is provided between the shaft portion 330 and the bearing portions 342 and 343, the shaft portion 330 is the main body portion 311 and the bearing portion 342, It is assembled to each of 343 (press-fit). Note that, conversely, in the state where a gap is not provided between the shaft portion 330 and the main body portion 311 and a gap is provided between the shaft portion 330 and the bearing portions 342 and 343, the shaft portion 330 is the main body portion 311 and the bearing. It can also be assembled to each of the parts 342, 343.

  As shown in FIGS. 4A and 4B, insertion holes 312 and 314 are formed in the main body portion 311 so as to be aligned in the vertical direction. The insertion hole 312 extends substantially in the front-rear direction of the main body portion 311, and the rear side thereof is open. The hole diameter on the rear side of the insertion hole 312 is formed to be smaller than the hole diameter of the other portion, and the boundary portion is a step portion 313. In the insertion hole 312, a spring 324 which constitutes a first elastic member for elastically supporting one end of the first rotation member 320 is inserted. For the spring 324, for example, a compression spring is used.

  Similarly, the insertion hole 314 extends substantially in the front-rear direction of the main body 311, and the rear side is open. The hole diameter on the rear side of the insertion hole 314 is formed to be smaller than the hole diameter of the other portion, and the boundary portion is a step portion 315. A spring 326, which constitutes a second elastic member for elastically supporting one end of the second rotation member 322, is inserted into the insertion hole 314. For the spring 326, for example, a compression spring is used.

  The first pivoting member 320 pivots around the shaft 330 in the direction approaching and away from the wakeup switch 380 as the main body 311 pivots, and the pressing amount by the pulling operation of the trigger 300 The (operation amount) is transmitted by contacting the first pressing member 350. As shown in FIG. 4B, the first pivoting member 320 is composed of a main body 320a which is an elongated substantially cylindrical body, and a flange portion 320b which protrudes outward from the peripheral surface on the base end side of the main body 320a. . The main body 320a is disposed in the insertion hole 312 with its proximal end elastically supported by the spring 324 and locked (restricted) to the step portion 313 of the insertion hole 312 by the flange portion 320b. The distal end of the main body 320 a protrudes rearward from the rear surface 310 a of the main body 311 by a predetermined length.

  The second pivoting member 322 pivots around the shaft 330 in a direction approaching and away from the load sensor 382 as the main body 311 pivots, and the pressing amount by the pulling operation of the trigger 300 The operation amount is transmitted by contacting the second pressing member 352. As shown in FIG. 4B, the second pivoting member 322 includes a main body 322a which is an elongated substantially cylindrical body, and a flange portion 322b which protrudes outward from the peripheral surface on the base end side of the main body 322a. . The main body 322a is disposed in the insertion hole 314 with its proximal end elastically supported by the spring 326 and being locked (restricted) to the step portion 315 of the insertion hole 314 by the flange portion 322b. The distal end of the main body 322 a protrudes rearward from the rear surface 310 a of the main body 311 by a predetermined length.

  A spring 332 is interposed between the lower rear end of the main body 311 and the lower front end of the storage case 340. The spring 332 elastically supports the main body 311 which rotates in response to the pulling operation of the user with respect to the storage case 340. For the spring 332, for example, a compression spring is used. Thus, in a state where the trigger 300 is not pressed (initial state), the first pivoting member 320 is held at a position separated from the first pressing member 350, and the second pivoting member 322 is The second pressing member 352 is held at a position spaced apart.

  The storage case 340 is formed of a box, and is attached to the rear side of the main body 311 and within the housing 10 that constitutes the grip 14. Inside the storage case 340, a pressing portion 360, a substrate 370, and the like are stored.

  The pressing portion 360 has a first pressing member 350 and a second pressing member 352. The first pressing member 350 is disposed between the first pivoting member 320 and the wakeup switch 380, and transmits the pressing force applied by the first pivoting member 320 to the wakeup switch 380. It is a member. Further, as shown in FIG. 4B, the first pressing member 350 is composed of a substantially cylindrical main body 350a and a concave portion 350b formed on the side surface of the main body 350a. The main body 350a is held by the storage case 340 by fitting the support member 356 into the recess 350b of the side surface portion. The support member 356 is made of an elastically deformable material and is attached to the storage case 340.

  The second pressing member 352 is a member disposed between the second rotation member 322 and the load sensor 382 for transmitting the pressing force applied by the second rotation member 322 to the load sensor 382. is there. Further, as shown in FIG. 4B, the second pressing member 352 is composed of a substantially cylindrical main body 352a and a concave portion 352b formed in a side surface portion of the main body 352a. The main body 352 a is held by the storage case 340 by fitting the support member 356 into the recess 352 b of the side surface portion.

  A sheet member 362 having an opening at a position corresponding to the first pressing member 350 and the second pressing member 352 is provided on the front side of the first pressing member 350 and the second pressing member 352. The sheet member 362 is attached to the storage case 340 so as to cover the opening on the front side of the storage case 340, and waterproofs the substrate 370 and the like disposed inside the storage case 340. In addition, although the structure which improves waterproofness by providing the sheet | seat member 362 as the switch 30 was employ | adopted in this Embodiment, it is not limited to this. The switch 30 in the present embodiment has a structure that can ensure the waterproofness of the switch 30 by the first pressing member 350 and the second pressing member 352 being fitted into the support member 356. A structure without the sheet member 362 may be employed.

  The substrate 370 has a substantially rectangular shape in plan view as shown in FIGS. 4 to 6, and the plane direction thereof is substantially orthogonal to the stroke direction D of the trigger 300 and the longitudinal direction thereof is the power tool 100. It is attached in the storage case 340 along the vertical direction. On the front side of the substrate 370, the load sensor 382, the wakeup switch 380 and the Hall ICs 384a and 384b are mounted.

  The load sensor 382 is mounted on the front side of the substrate 370 and at a position facing the second pressing member 352, and corresponds to the amount of pull operation of the trigger 300, ie, the amount of pressing applied by the second pressing member 352. The voltage signal is output to the control substrate (not shown) via the wiring 390.

  The wakeup switch 380 is mounted on the front side of the substrate 370 at a position facing the pressing member 352. The mounting height of the wakeup switch 380 is higher than the mounting height of the load sensor 382. This is to turn on the wakeup switch 380 earlier than the load sensor 382. Wake-up switch 380 stands by a CPU (Central Processing Unit) in advance by outputting a voltage signal to a control substrate (not shown) via wiring 390 based on the pulling operation of trigger 300, ie, the contact operation of pressing member 352. increase. When a structure capable of turning on the wakeup switch 380 earlier than the load sensor 382 is employed, the present invention is not limited to the relationship of the mounting height described above.

  The Hall ICs 384 a and 384 b are mounted above the wakeup switch 380 and at predetermined intervals in the width direction (left and right direction) of the substrate 370. The Hall ICs 384 a and 384 b detect the magnetism of the magnet 510 to generate a voltage, and output the voltage signal to a control substrate (not shown) via the wiring 390.

  Thus, the load sensor 382 is disposed outside the wakeup switch 380 in the radial direction with respect to the shaft 330. That is, the load sensor 382 is disposed at a position farther from the shaft 330 in the radial direction than the wakeup switch 380. This is due to the following reasons. Since the load sensor 382 is a sensor that adjusts the output according to the amount of operation, the operation stroke is longer than the wakeup switch 380 that controls only on / off. Therefore, in the present embodiment, by disposing load sensor 382 on the outer peripheral side away from shaft portion 330 in pivoting portion 310, the amount of pressure applied to load sensor 382 by trigger 300 even when the angle change of trigger 300 is small. It employs a configuration that can reliably detect changes. Thus, by disposing the load sensor 382 at a position facing the second pivoting member 322 where the stroke length is long, even the load sensor 382 having a long operation stroke does not increase the operation amount of the trigger 300, a delicate load Adjustment of (pressure) can be performed. Further, the displacement given to the load sensor 382 can be adjusted without changing the operation amount of the trigger 300. As a result, the number of rotations and the like of the motor 60 can be accurately controlled, and the output adjustment can be easily performed even with the short stroke trigger.

  Further, as shown in FIG. 4B, in the state (initial state) in which the trigger 300 is not pulled by the user (the initial state), the first pivoting member 320 and the first pressing member 350 are separated by the gap C1. The second rotation member 322 and the second pressing member 352 are provided at positions separated by a gap C3 wider than the gap C1. Further, a gap C2 between the first pressing member 350 and the wakeup switch 380 and a gap C4 between the second pressing member 352 and the load sensor 382 are set to be substantially the same. The lengths in the front-rear direction of the first pressing member 350 and the second pressing member 352 are also set substantially the same. Thereby, the distance C34 (second distance) between the second pivoting member 322 and the load sensor 382 is the distance C12 (first distance) between the first pivoting member 320 and the wakeup switch 380. And the wakeup switch 380 can be turned on earlier than the load sensor 382.

  In the present embodiment, the control board is disposed, for example, on the upper side of the battery pack mounting portion 16 shown in FIG. 1, and one end of the wiring 390 drawn around from the board 370 is connected. Further, one end of a wire for the motor 60 is connected to the control board, and the other end of the wire is connected to the motor 60 in the power tool main body 12 through the inside of the grip 14. The control board controls, for example, the output torque and the number of revolutions of the motor 60 based on an operation signal corresponding to the pulling operation (pressing amount) of the trigger 300.

[Operation Example of Switch 30]
Next, an example of the operation of the switch 30 according to the present invention will be described. 7A, 7B and 8A and 8B are diagrams for explaining an example of the operation of the switch 30 when the power tool 100 is used.

  As shown in FIG. 7A, when the user pulls the trigger 300 from the standby state of the trigger 300, as shown in FIG. 7B, the trigger 300 moves backward by an amount of operation. Along with this, the main body 311 integrated with the trigger 300 pivots rearward with the shaft 330 as a fulcrum, and the first pivoting member 320 and the second pivoting member 322 mounted on the main body 311 Each also moves (rotates) backward.

  Thereby, as shown in FIG. 8A, first, the first pressing member 350 is pressed rearward by the first pivoting member 320 located on the upper side, and the supporting member 356 is elastically deformed. The pressing member 350 abuts on the wakeup switch 380, and the wakeup switch 380 is turned on. When the wakeup switch 380 is turned on, a voltage signal is supplied to the CPU of the control device (not shown), and the control device is enabled.

  Subsequently, as the main body 311 rotates, as shown in FIG. 8B, the second pressing member 352 is moved rearward by the second pivoting member 322 located below the first pivoting member 320. As a result, the support member 356 is elastically deformed, and the load sensor 382 is pressed by the second pressing member 352. The load sensor 382 detects the pressing force corresponding to the amount of pull operation of the trigger 300 by the user, and outputs the detected detection signal to the CPU of the control board. The CPU of the control board supplies electric power to the motor 60 by PWM control based on the detection signal from the load sensor 382.

  In the first pivoting member 320 and the second pivoting member 322, when the pressing force applied by the trigger 300 is equal to or greater than a predetermined value, the springs 324 and 326 contract, and the first pressing member 350 And the pressing force applied to the second pressing member 352 escapes (is dispersible). As a result, since the pressing force more than necessary is not applied to the first pressing member 350 and the second pressing member 352, the load sensor 382 and the wakeup switch 380 can be used as the first pressing member 350 and the second pressing member. Damage or the like due to the pressing of the pressing member 352 can be prevented.

  As described above, according to the present embodiment, the load sensor 382, the wakeup switch 380 and the Hall ICs 384 a and 384 b mounted on the same substrate 370 are assembled in the housing 10 as in the prior art. In addition, cost reduction and space saving can be achieved as compared with the case where the load sensor 382 and the Hall ICs 384a and 384b for normal / reverse switching are mounted on separate substrates.

  Also, conventionally, waterproofing measures had to be implemented for each board, but according to the present embodiment, the load sensor 382, the wakeup switch 380, and the board 370 on which the Hall ICs 384a and 384b are mounted are stored in the storage case 340. Since it arranges inside, a waterproof structure can be improved by simple structure. This can solve the problem that the load sensor 382 or the like is damaged by water.

  Further, according to the present embodiment, Hall ICs 384a and 384b are used as forward / reverse switching switches, and forward / reverse switching can be maintained since forward / reverse switching mechanism 50A moves like a lever. The tactile sense can recognize the positive / negative state.

  Furthermore, according to the present embodiment, the load sensor 382 is employed as the pressing force detection means of the switch 30, and the substrate 370 on which the load sensor 382 is mounted is disposed in the direction orthogonal to the stroke direction D. The length in the depth direction (front-rear direction) of the power tool 100 can be shortened. As a result, downsizing of the power tool 100 can be achieved, and workability in a narrow space such as, for example, under stairs or in a curtain box can be improved.

[Exemplary configuration of another forward / reverse switching mechanism (part 1)]
Next, a configuration example of the forward / reverse switching mechanism 50B in the case where push switches 386a, 386b are adopted as the forward / reverse switching switch instead of the Hall ICs 384a, 384b will be described.

  FIG. 9 shows an example of the configuration of the forward / reverse switching mechanism 50B. In the forward / reverse switching mechanism 50B, the same reference numerals are given to the same components as the forward / reverse switching mechanism 50A, and the description will be omitted.

  As shown in FIG. 9, the forward / reverse switching mechanism 50 </ b> B includes a forward / reverse switching operation unit 500. The forward / reverse switching operation unit 500 is a first operation member 500a extending in the left-right direction (width direction) of the power tool main body 12, and a second operation member extends downward from the both end portions of the first operation member 500a in the left-right direction. And the operation members 500c and 500d.

  The second operation member 500c is disposed outside the push switch 386a and opposed to the push switch 386a, and presses the push switch 386a from the outside as the left forward / reverse switching operation unit 50L is moved by the user operation. Turn on. The second operation member 500d is disposed outside the push switch 386b and opposed to the push switch 386b, and presses the push switch 386b from the outside as the right forward / reverse switching operation unit 50R is moved by the user operation. Turn on.

  The push switches 386a and 386b are provided on the front side of the substrate 370, and are mounted above the wakeup switch 380 and at predetermined intervals in the width direction (left and right direction) of the substrate 370. When the push switches 386a and 386b are turned on by the second operation members 500c and 500d, the push switches 386a and 386b generate an on signal and output the on signal to the control substrate through the wiring 390.

  On the front side of the substrate 370, in addition to the push switches 386a and 386b, the wakeup switch 380 and the load sensor 382 are mounted. That is, the push switches 386a and 386b, the wakeup switch 380, and the load sensor 382 are mounted on the same substrate 370.

  As described above, according to the forward / reverse switching mechanism 50B, since the push switches 386a and 386b are used as the forward / reverse switching switch, the amount of operation (the amount of movement of the trigger 300) is reduced, so that the switching operation can be performed quickly. As a result, the operability at the time of switching between normal and reverse rotations by the user can be improved.

[Exemplary configuration of another forward / reverse switching mechanism (Part 2)]
Next, a configuration example of the forward / reverse switching mechanism 50C in a case where the toggle switch 388 is adopted as the forward / reverse switching switch instead of the Hall ICs 384a and 384b will be described.

  FIG. 10 shows an example of the configuration of the forward / reverse switching mechanism 50C. In the forward / reverse switching mechanism 50C, the same reference numerals are assigned to components common to the forward / reverse switching mechanism 50A, and the description will be omitted.

  As shown in FIG. 10, the forward / reverse switching mechanism 50C includes a forward / reverse switching operation unit 500. The forward / reverse switching operation unit 500 is a first operation member 500 a extending in the left-right direction (width direction) of the power tool body 12, and a second operation member extending downward from the first operation member 500 a so as to sandwich the toggle switch 388. It is comprised from the operation members 500e and 500f.

  The second operation member 500e switches the direction of the toggle switch 388 as the user moves the left forward / reverse switching operation unit 50L inward. The second operation member 500f switches the direction of the toggle switch 388 as the user moves the right forward / reverse switching operation unit 50R inward.

  The toggle switch 388 is provided on the front side of the substrate 370, and is mounted above the wakeup switch 380 and substantially at the center in the width direction (left-right direction) of the substrate 370. The toggle switch 388 generates a switching signal based on the switching operation of the switch direction by the second operation members 500 e and 500 f and outputs the switching signal to the CPU of the control board via the wiring 390.

  In addition to the toggle switch 388, the wakeup switch 380 and the load sensor 382 are mounted on the front side of the substrate 370. That is, on the same substrate 370, the toggle switch 388, the wakeup switch 380 and the load sensor 382 are mounted.

  As described above, according to the forward / reverse switching mechanism 50C, the toggle switch 388 is used as the forward / reverse switching switch, and the forward / reverse switching state is maintained because the forward / reverse switching mechanism 50C moves like a lever. It is possible to recognize the positive and negative states by touch.

  The present invention is not limited to the above embodiment as it is, and at the implementation stage, the constituent elements can be modified and embodied without departing from the scope of the invention. In addition, various inventions can be formed by appropriate combinations of a plurality of components disclosed in the above embodiments.

  For example, in the embodiment described above, an example in which the switch 30 is configured to be swingable by the rotation unit 310 has been described, but the present invention is not limited to this. For example, the present invention can be applied to the case where the switch 30 is configured by a stroke type in which the resistance value changes in accordance with the operation stroke.

  Also, the mounting positions of the wakeup switch 380 and the load sensor 382 can be made different from the above-described embodiment. Here, the operation stroke of the wakeup switch 380 is configured to be longer than the operation stroke of the load sensor 382. Therefore, the wakeup switch 380 requiring a long operation stroke can be disposed outside the load sensor 382 in the radial direction based on the shaft portion 330. That is, the wakeup switch 380 is disposed at a position corresponding to the second pivoting member 322, and the load sensor 382 is disposed at a position corresponding to the first pivoting member 320. This is because the stroke length of the second rotation member 322 at the time of operation of the trigger 300 is longer than the stroke length of the first rotation member 320 at the time of operation of the trigger 300, so the load sensor 382 is rotated by the first rotation. This is because when the member 320 is operated, the wakeup switch 380 can be reliably turned on.

  Further, although the example in which the wakeup switch 380 and the load sensor 382 are disposed in the vertical direction (height direction) of the substrate 370 has been described in the embodiment described above, the present invention is not limited thereto. For example, the wakeup switch 380 and the load sensor 382 may be mounted in parallel in the width direction on the substrate 370. In this case, the first pivoting member 320 and the second pivoting member 322, the first pressing member 350, the second pressing member 352 and the like correspond to the wakeup switch 380 and the load sensor 382 described above. Arrange in parallel. Furthermore, the first pivoting member 320 corresponding to the wakeup switch 380 is protruded more than the second pivoting member 322 corresponding to the load sensor 382 such that the wakeup switch 380 is activated earlier than the load sensor 382 Or the position of the wakeup switch 380 on the substrate 370 is higher than the position of the load sensor 382 (located forward).

  Moreover, although the trigger 300 and the rotation part 310 were set as the separate structure in embodiment mentioned above, it is not limited to this, the trigger 300 and the rotation part 310 can also be comprised integrally. In addition, the first pivoting member 320 and the second pivoting member 322 can be configured integrally with the pivoting portion 310 without using the springs 324 and 326. Furthermore, the first rotation member 320 and the first pressing member 350 can be configured as one member, and the second rotation member 322 and the second pressing member 352 can be configured as one member.

  Further, a display unit such as an LED for displaying the setting of forward rotation and reverse rotation is mounted on the substrate 370 on which the load sensor 382 shown in FIG. 6 etc., the wakeup switch 380 and the Hall ICs 384a and 384b are mounted. Also good. In addition, the setting of the rotation direction is displayed by lighting the operation unit such as the forward / reverse switching mechanism 50A for switching between normal rotation and reverse rotation or the vicinity of the operation unit by the display unit such as the LED described above. Also good.

12 Power tool main body (main body)
30 switch 60 motor 100 electric tool (tool)
300 trigger (operation unit)
310 Rotating part 311 Body part (rotating part)
320 First rotation member (rotation part)
322 Second rotation member (rotation part)
324 spring (first elastic member)
326 Spring (second elastic member)
330 shaft 340 storage case (storage member)
350 First pressing member (pressing portion)
352 Second pressing member (pressing portion)
370 board 380 wake up switch (detection unit)
382 Load sensor (detection unit)
384a, 384b Hall IC (Detector)
386a, 386b push switch (detection unit)
388 Toggle switch (Detector)

Claims (6)

A tool comprising: a switch; and a motor driven based on the operation of the switch, the tool comprising:
The switch is
An operation unit operated by the user;
A load sensor that detects a load corresponding to a pressing force by the operation of the operation unit;
A forward / reverse switching unit that switches the rotation direction of the motor to forward rotation or reverse rotation;
A substrate on which each of the load sensor and the forward / reverse switching unit is mounted;
A tool characterized in that it comprises. The tool according to claim 1, wherein the switch comprises a storage member for storing the substrate. The said board | substrate is arrange | positioned so as to be substantially orthogonal with respect to the press direction of the said operation part. The tool of Claim 1 or 2 characterized by the above-mentioned. The tool according to any one of claims 1 to 3, wherein the forward / reverse switching unit is a Hall IC. The tool according to any one of claims 1 to 3, wherein the forward / reverse switching unit is a push switch. The tool according to any one of claims 1 to 3, wherein the forward / reverse switching unit is a toggle switch.

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