Working equipment

Abstract

The working device includes: a working part; a motor that drives the working part; a motor housing that covers at least a part of the motor; an outer housing that covers at least a part of the motor and at least a part of the motor housing; and a light-emitting part that is provided in the part of the motor housing covered by the outer housing. An opening through which light emitted from the light-emitting part passes is provided in the part of the outer housing opposite to the light-emitting part.

Description

Technical Field

[0001] The technology disclosed in this specification relates to a working device. Background Art

[0002] A working device is disclosed in Japanese Unexamined Patent Application Publication No. 2003 - 89101, which has a working part, a motor for driving the working part, a motor housing for supporting the motor, an outer housing, and a light emitting part provided on the outer housing. Summary of the Invention

[0003] Problems to be Solved by the Invention

[0004] When the light emitting part is provided on the outer housing, there are cases where the position for setting the light emitting part is restricted due to the shape of the outer housing and the like. That is, in the outer housing, it is sometimes impossible to set the light emitting part at a position suitable for setting the light emitting part. A technology is provided in this specification that can improve the degree of freedom in the layout of the light emitting part in the working device.

[0005] Solutions for Solving the Problems

[0006] Alternatively, the working device disclosed in this specification may include: a working part; a motor that drives the working part; a motor housing that covers at least a part of the motor; an outer housing that covers at least a part of the motor and at least a part of the motor housing; and a light emitting part that is provided in the part of the motor housing covered by the outer housing, and an opening through which light emitted from the light emitting part passes is provided in the part of the outer housing opposite to the light emitting part.

[0007] According to the above structure, the light emitting part is provided not on the outer housing but on the motor housing. Thus, even when the setting of the light emitting part on the outer housing is restricted, the light emitting part can be arranged at an appropriate position. Therefore, the degree of freedom in the layout of the light emitting part in the working device can be improved. Brief Description of the Drawings

[0008] Figure 1 is a perspective view of the power cutter 10 of the first embodiment.

[0009] Figure 2 is a top view of the power cutter 10 of the first embodiment as viewed from above.

[0010] Figure 3 is along Figure 2 sectional view taken along line III - III.

[0011] Figure 4 is Figure 3 an enlarged view of the dashed line IV.

[0012] Figure 5This is a diagram showing the electrical structure of the power cutter 10 according to the first embodiment.

[0013] Figure 6 This is a perspective view of the brush cutter 202 according to the second embodiment.

[0014] Figure 7 This is Figure 6 a cross-sectional view taken along line VII-VII.

[0015] Figure 8 This is a diagram showing the electrical structure of the brush cutter 202 according to the second embodiment. Detailed Embodiments

[0016] In one or more embodiments, a shielding member is provided at the opening. The shielding member shields the opening and allows the light emitted from the light-emitting portion to pass through.

[0017] According to the above structure, foreign objects can be prevented from passing through the opening of the outer casing. Thus, foreign objects can be prevented from entering the interior of the outer casing.

[0018] In one or more embodiments, the light emitted from the light-emitting portion may be emitted toward the working portion side.

[0019] Preferably, in a state where the working portion is driven, the operator can grasp the situation on the working portion side. According to the above structure, the operator can accurately grasp the situation on the working portion side by using the light emitted from the light-emitting portion.

[0020] In one or more embodiments, the work equipment may further include a battery pack that can be attached to and detached from the outer casing, and the motor and the light-emitting portion operate using the power supplied from the battery pack.

[0021] According to the above structure, the work equipment may not include a power cord or the like for receiving power from the outside. Thus, when the operator uses the work equipment, the power cord does not become an obstacle. Therefore, workability can be improved.

[0022] In one or more embodiments, the work equipment may further include a controller that controls the operation of the motor and the operation of the light-emitting portion.

[0023] Normally, the operation of the motor is controlled by the controller. According to the above structure, the operation of the light-emitting portion can be appropriately controlled by the controller that controls the operation of the motor.

[0024] (First Embodiment)

[0025] Refer to Figures 1 to 5 to describe the power cutter 10. The power cutter 10 is a handheld power tool mainly used for cutting cutting objects such as stone and iron. AsFigure 1 , Figure 2 As shown in Figure 2 , the power cutter 10 includes a disc-shaped blade 12, a housing 14, a metal blade arm 16, a blade guard 18, and a battery housing 20. The housing 14 includes a right housing 14a and a left housing 14b. The blade arm 16 extends forward from the right housing 14a.

[0026] The disc-shaped blade 12 is a blade having a circular plate shape, and has a plurality of cutting tips or grinding wheels on its outer peripheral edge. The disc-shaped blade 12 is detachably mounted on the blade arm 16. The rotation axis of the disc-shaped blade 12 extends perpendicular to the length direction of the blade arm 16 (i.e., in the left-right direction).

[0027] The power cutter 10 further includes a blade guard 18. The blade guard 18 is assembled to the blade arm 16 and covers a part of the disc-shaped blade 12. The blade guard 18 prevents dust generated by the disc-shaped blade 12 from splashing toward the user.

[0028] The power cutter 10 further includes a front handle 30 and a rear handle 32. The front handle 30 is provided at the front part of the housing 14. The rear handle 32 is provided on the housing 14. The rear handle 32 is located at the rear part of the housing 14 and extends rearward from the housing 14.

[0029] The battery housing 20 is provided between the front handle 30 and the rear handle 32. The battery housing 20 has an openable and closable battery cover 40. As Figure 3 shown, a plurality of battery interfaces (not shown) for detachably accommodating a plurality of battery packs 42 (refer to Figure 5 ) are provided in the battery housing 20.

[0030] As Figure 1 shown, a main switch 50 is provided on the rear handle 32. When the user operates the main switch 50, a motor 72 (refer to Figure 3 , Figure 5 ) described later drives the disc-shaped blade 12. When the user releases the operation of the main switch 50, the motor 72 stops driving the disc-shaped blade 12.

[0031] The power cutter 10 further includes a lighting switch 52 for turning on and off a lighting device 92 (refer to Figure 3 , Figure 4 ) described later. The lighting switch 52 is located on the upper surface of the rear handle 32 and is configured such that the user can operate it while holding the rear handle 32.

[0032] The power cutter 10 further includes an overload indicator 54 and a battery indicator 56. The overload indicator 54 is disposed at a position that is easily visually recognizable to the user who is using the power cutter 10. The battery indicator 56 is an alarm that informs the user of the charging level of each of the plurality of battery packs 42. The battery indicator 56 of the present embodiment has a plurality of LEDs with respect to each battery pack 42, and is configured to change the number of LEDs that emit light according to the charging level of each battery pack 42.

[0033] As Figure 2 shown, the power cutter 10 further includes a water supply hose 60. The water supply hose 60 is assembled to the outer housing 14 and is configured to supply water into the blade cover 18. A water supply connector 62 is provided at the base end of the water supply hose 60. The water supply connector 62 is held by the outer housing 14 and is connected to an external water supply source such as a faucet of a water pipe (not shown) by means of a hose, for example.

[0034] As Figure 3 shown, a motor housing 70, a motor 72, and a control board 74 are housed in the outer housing 14. In the present embodiment, the motor housing 70 is attached to the blade arm 16 by bolts 76 that penetrate the right outer housing 14a. With such a structure, the right outer housing 14a, the blade arm 16, and the motor housing 70 can be assembled in one process. Therefore, compared with the case where the blade arm 16 and the motor housing 70 are respectively attached to the right outer housing 14a, the assembly process of the right outer housing 14a, the blade arm 16, and the motor housing 70 can be simplified. In addition, since the motor housing 70 is attached to the metal blade arm 16, the motor housing 70 can be firmly attached to the blade arm 16. Further, in a modified example, the motor housing 70 may be attached to the right outer housing 14a. The motor 72 is housed in the motor housing 70. The motor 72 is an inner rotor type motor and includes a stator 80, a rotor 82, and a motor shaft 84. The motor 72 is connected to the disc blade 12 by a conveyor belt (not shown), for example.

[0035] The control board 74 has, for example, a power conversion circuit and a microprocessor. The control board 74 is disposed behind the motor housing 70. The control board 74 controls the operation of the motor 72 by controlling the power supplied from the plurality of battery packs 42 to the motor 72. When the motor 72 is driven, the disc blade 12 is driven.

[0036] A lighting housing portion 90 for housing a lighting device 92 is provided at the upper front portion of the motor housing 70. As Figure 4 shown, the lighting device 92 includes an LED board 94 and LEDs 96. The LED board 94 is electrically connected to the control board 74. When Figure 1Regarding the lighting switch 52, power is supplied from the control substrate 74 to the LED substrate 94 to cause the LED 96 to emit light. The luminous intensity of the LED 96 is greater than that of the LED provided in the battery indicator 56 and is 1900 millicandelas [mcd]. As an LED for lighting, for example, it is preferably 1000 millicandelas [mcd] or more, and more preferably 1500 millicandelas [mcd] or more.

[0037] A first opening 100 and a second opening 102 located at a position closer to the front side than the first opening 100 are provided in front of the LED 96. The first opening 100 is provided in the motor housing 70. The second opening 102 is provided in the left housing 14b. A protective member 110 that shields the second opening 102 is provided in the left housing 14b. The protective member 110 is formed of a transparent material. As Figure 2 shown, the protective member 110 is provided in the left-right direction at a position to the left of the disc-shaped blade 12 provided in the central portion of the power cutter 10. Therefore, the illuminator 92 provided behind the protective member 110 is also provided at a position to the left of the disc-shaped blade 12. The light emitted from the LED 96 irradiates the front of the power cutter 10, i.e., the side of the disc-shaped blade 12, via the first opening 100, the second opening 102, and the protective member 110.

[0038] As described above, as Figures 1 to 5 shown, a power cutter 10 according to an embodiment includes: a disc-shaped blade 12; a motor 72 that drives the disc-shaped blade 12; a motor housing 70 that covers at least a part of the motor 72; a housing 14 that covers at least a part of the motor 72 and at least a part of the motor housing 70; and an illuminator 92 that is provided in an illumination storage portion 90 covered by the housing 14 in the motor housing 70. A second opening 102 through which the light emitted from the illuminator 92 passes is provided in a portion of the housing 14 that faces the illuminator 92. According to the above structure, even when the installation of the illuminator 92 in the housing 14 is restricted, the illuminator 92 can be arranged at an appropriate position. Therefore, in the power cutter 10, the degree of freedom in the layout of the illuminator 92 can be increased.

[0039] In a power cutter 10 according to an embodiment, as Figure 3 、 Figure 4 shown, a protective member 110 is provided in the second opening 102. The protective member 110 shields the second opening 102 and allows the light emitted from the illuminator 92 to pass through. According to the above structure, foreign matter can be prevented from passing through the second opening 102 of the housing 14. Therefore, foreign matter can be prevented from entering the interior of the housing 14.

[0040] In a power cutter 10 according to an embodiment, as Figure 3 、 Figure 4As shown, the light emitted from the illuminator 92 is directed toward the side of the disc-shaped blade 12. According to the above structure, the operator can accurately grasp the situation on the side of the disc-shaped blade 12 by using the light emitted from the illuminator 92.

[0041] In a power cutter 10 according to an embodiment, as Figures 1 to 5 shown, it includes a battery pack 42 that can be attached to and detached from the outer housing 14, and the motor 72 and the illuminator 92 operate using the power supplied from the battery pack 42. According to the above structure, the power cutter 10 may not have a power cord or the like for receiving power from the outside. Thus, when the operator uses the power cutter 10, the power cord does not become an obstacle. Therefore, the workability can be improved.

[0042] As Figure 5 shown, a power cutter 10 according to an embodiment includes a control board 74 that controls the operation of the motor 72 and the operation of the illuminator 92. According to the above structure, the operation of the illuminator 92 can be appropriately controlled by using the control board 74 that controls the operation of the motor 72.

[0043] (Corresponding relationship) The disc-shaped blade 12 is an example of the "working part". The illuminator 92 is an example of the "light-emitting part". The second opening 102 is an example of the "opening part through which the light emitted from the light-emitting part passes". The control board 74 is an example of the "controller".

[0044] (Second Embodiment)

[0045] Refer to Figures 6 to 8 to describe the brush cutter 202 of this embodiment. As Figure 6 shown, the brush cutter 202 includes: a support rod 204; a front-end unit 206 provided at the front end 204a of the support rod 204; a rear-end unit 208 provided at the rear end 204b of the support rod 204; a ring-shaped handle 210 provided at the middle part of the support rod 204; and a grip 212 provided between the ring-shaped handle 210 of the support rod 204 and the rear-end unit 208. The support rod 204 is a hollow tubular shape and extends linearly from the front end 204a to the rear end 204b.

[0046] The front-end unit 206 includes an outer housing 216, a motor housing 218, a line holder 220, and a safety cover 222. As Figure 6 , Figure 7 shown, the outer housing 216 does not cover the entire motor housing 218, but covers the upper part and the front part 218a of the motor housing 218. The line holder 220 holds the linear cutting line 224. The front end of the cutting line 224 extends out from the line holder 220 and rotates together with the line holder 220.

[0047] The annular handle 210 is a hollow tube, formed into a ring that bulges upward and laterally with respect to the support rod 204. The annular handle 210 is fixed to the support rod 204.

[0048] The handle 212 is formed to cover the outer periphery of the support rod 204. The handle 212 includes a locking lever 230 provided on the upper surface and a trigger switch 232 provided on the lower surface. The trigger switch 232 is a switch for driving a motor 250 (refer to Figure 8 ). When the trigger switch 232 is not depressed, the supply of power to the motor 250 is cut off. When the trigger switch 232 is depressed, power is supplied to the motor 250. The locking lever 230 is a lever for restricting and releasing the depression operation of the trigger switch 232. When the locking lever 230 is not depressed, the depression operation of the trigger switch 232 is restricted. When the locking lever 230 is depressed, the restriction on the depression operation of the trigger switch 232 is released.

[0049] An operation panel 234 and a display panel 236 are provided at a position on the upper surface of the handle 212 that is forward of the locking lever 230. By operating the operation panel 234, the operator can switch between driving and stopping the motor 250, and can switch between turning on and off an LED 274 (refer to Figure 7 ), etc. A display lamp (not shown) for displaying the operating state of the motor 250 is installed on the display panel 236.

[0050] The rear end unit 208 includes a rear end housing 240 that houses a control board 244 (refer to Figure 8 ) and a battery pack 242 that can be detachably mounted on the rear end housing 240.

[0051] As Figure 7 shown, the upper part of the motor housing 218 of the front end unit 206 is open. The outer housing 216 covers the opening at the upper part of the motor housing 218. In addition, the cover portion 216a of the outer housing 216 covers the outer periphery of the front portion 218a of the motor housing 218.

[0052] An outer-rotor type motor 250 is housed in the space S defined by the outer housing 216 and the motor housing 218. The motor 250 includes a stator 252, a rotor 254, and a motor shaft 256. The motor 250 is electrically connected to the control board 244 housed in the rear end housing 240 by means of electrical wiring (not shown). This electrical wiring extends from the motor 250 within the space S through a first opening 260 provided at the rear of the outer housing 216 and the motor housing 218 and within the support rod 204 to the control board 244 housed in the rear end housing 240.

[0053] The stator 252 fits into the stator base 258. By fixing the stator base 258 to the outer housing 216 and the motor housing 218, the stator 252 is fixed to the outer housing 216 and the motor housing 218.

[0054] A lighting device 270 is provided at the front portion 218a of the motor housing 218. The lighting device 270 includes an LED substrate 272 and LEDs 274. The LED substrate 272 is electrically connected to the control substrate 244 housed in the rear end housing 240 by means of electrical wiring (not shown). This electrical wiring extends from the LED substrate 272 provided at the front portion 218a of the motor housing 218, through the space S, the first opening 260, and inside the support rod 204, to the control substrate 244 housed in the rear end housing 240. If the Figure 6 operation panel 234 is operated, power is supplied from the control substrate 244 to the LED substrate 272, causing the LEDs 274 to emit light.

[0055] A second opening 280 that penetrates the cover portion 216a of the outer housing 216 in the front-rear direction is provided at a portion of the cover portion 216a of the outer housing 216 that faces the LEDs 274. A protective member 282 is installed in the second opening 280. The protective member 282 is formed of a transparent material. The light emitted from the LEDs 274 provided at the front portion 218a of the motor housing 218 is irradiated forward of the brush cutter 202 through the protective member 282.

[0056] As described above, as Figures 6 to 8 shown, the brush cutter 202 of one embodiment includes: a cutting line 224; a motor 250 that drives the cutting line 224; a motor housing 218 that covers at least a part of the motor 250; an outer housing 216 that covers at least a part of the motor 250 and at least a part of the motor housing 218; and a lighting device 270 that is provided in a portion of the motor housing 218 covered by the outer housing 216. A second opening 280 through which the light emitted from the lighting device 270 passes is provided in a portion of the outer housing 216 that faces the lighting device 270. According to the above structure, even when it is difficult to provide the lighting device 270 in the outer housing 216, the lighting device 270 can be arranged at an appropriate position. Therefore, the degree of freedom in the layout of the lighting device 270 can be increased in the brush cutter 202.

[0057] (Corresponding relationship) The cutting line 224 is an example of a "working part". The lighting device 270 is an example of a "light emitting part". The second opening 280 is an example of an "opening portion through which the light emitted from the light emitting part passes". The control substrate 244 is an example of a "controller".

[0058] As described above, specific examples of the present invention have been described in detail, but these are merely illustrative and do not limit the scope of the claims. The technology described in the scope of the claims includes technologies obtained by various modifications and changes to the specific examples illustrated above.

[0059] (First modification example) The "working device" is not limited to a power cutter or a brush cutter, and may also be a blower, a high-pressure cleaner, a power tool, etc. having a motor housing and an outer housing. As the power tool, for example, it is an electric drill, etc.

[0060] (Second modification example) The use of the "light-emitting part" is not limited to lighting, and the use of the "light-emitting part" can also be used to display the operating state of the working device, for example.

[0061] (Third modification example) In each embodiment, the protection member may not be provided at the second opening of the outer housing. In addition, in other modification examples, the illuminator provided on the motor housing may protrude toward the outer housing side and the second opening may be blocked by the illuminator.

[0062] (Fourth modification example) In each embodiment, the power cutter 10 and the brush cutter 202 may not include a battery pack. For example, the power cutter 10 and the brush cutter 202 may also have a power cord for receiving power from the outside.

[0063] (Fifth embodiment) In each embodiment, the type of the motor is not limited. For example, the motor may be a brushed motor or a brushless motor. In addition, the motor may be an outer rotor type motor or an inner rotor type motor.

[0064] The technical elements described in this specification or the drawings are technical elements that exhibit technical usefulness individually or through various combinations, and are not limited to the combinations described in the claims at the time of application. In addition, the technology illustrated in this specification or the drawings can achieve multiple purposes at the same time, and the fact of achieving one of the purposes itself has technical usefulness.

Claims

1. An operating device, wherein, the operating device includes: a working part; a motor that drives the working part; a motor housing that covers at least a part of the motor; an outer housing that houses the motor and the motor housing and covers the motor housing; and a light-emitting part that is provided in a part of the motor housing covered by the outer housing, an opening through which light emitted from the light-emitting part passes is provided in a part of the outer housing opposite to the light-emitting part, the outer housing includes a first outer housing and a second outer housing, and the motor housing and an arm for mounting the working part are assembled to one of the first outer housing and the second outer housing.

2. The operating device according to claim 1, wherein, a protection member is provided in the opening, and the protection member shields the opening and allows the light emitted from the light-emitting part to pass through.

3. The operating device according to claim 1 or 2, wherein, the light emitted from the light-emitting part is emitted toward the working part side.

4. The operating device according to claim 1 or 2, wherein, the operating device further includes a battery pack that can be attached to and detached from the outer housing, the motor and the light-emitting part operate using the power supplied from the battery pack.

5. The operating device according to claim 1 or 2, wherein, the operating device further includes a controller that controls the operation of the motor and the operation of the light-emitting part.

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