Motor unit and electric working machine

Abstract

The present application provides a kind of technology that can optimize the processing of motor unit. Motor unit is mounted to work unit in a detachable manner, so that work unit moves. Motor unit has: electric motor; housing, which supports electric motor; rotary output part, which outputs the power of electric motor to work unit by rotation; and battery mounting portion, which is provided in the housing, and a battery pack is detachably mounted in the battery mounting portion, and a power adapter can be mounted in the battery mounting portion instead of the battery pack, the power adapter is connected to the power supply by cable and connector, and the power of the power supply is supplied to the electric motor, and the housing has through holes through which the cable and the connector can pass respectively.

Description

Technical Field

[0001] The technology disclosed in this specification relates to motor units and electric work machinery. Background Technology

[0002] Patent Document 1 discloses a motor unit that is detachably mounted on a work unit to enable the work unit to operate. The motor unit includes: an electric motor; a housing supporting the electric motor; a rotation output section that outputs power from the electric motor to the work unit by rotation; and a battery mounting section disposed in the housing, on which a battery pack is detachably mounted.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: International Publication No. 2020 / 049617 Summary of the Invention

[0006] The problem the invention aims to solve

[0007] Sometimes, a power adapter connected to a power source via cables and connectors is installed in place of the battery pack in the battery mounting section. In this case, if the cable extending from the power adapter can move freely relative to the housing, the cable and / or connector may accidentally come into contact with objects outside the motor unit (e.g., obstacles, workpieces, user's body). As a result, the motor unit's operation may deteriorate. This specification provides a technique that can optimize the motor unit's operation.

[0008] Solution for solving the problem

[0009] The motor unit disclosed in this specification is detachably mounted on a work unit to operate the work unit. The motor unit includes: an electric motor; a housing supporting the electric motor; a rotary output unit that outputs power from the electric motor to the work unit by rotation; and a battery mounting unit disposed in the housing, on which a battery pack is detachably mounted. A power adapter can be mounted in place of the battery pack in the battery mounting unit. This power adapter is connected to a power source via cables and connectors and supplies power from the power source to the electric motor. The housing has through holes through which the cables and connectors can pass.

[0010] According to the above structure, by passing the cable through the through hole provided in the housing, the cable can be kept within the housing. This suppresses movement of the cable relative to the housing, thus preventing accidental contact between the cable and / or connector and objects outside the motor unit. This optimizes the handling of the motor unit.

[0011] The electric work machine disclosed in this specification includes: a work unit; and a motor unit detachably mounted to the work unit and used to operate the work unit. The motor unit includes: an electric motor; a housing supporting the electric motor; a rotary output unit that outputs power from the electric motor to the work unit by rotation; and a battery mounting unit disposed in the housing, on which a battery pack is detachably mounted. A power adapter can be mounted in place of the battery pack in the battery mounting unit. This power adapter is connected to a power source via a cable and connector and supplies power from the power source to the electric motor. The housing has through holes through which the cable and connector can pass.

[0012] According to the above structure, by passing the cable through the through hole provided in the housing, the cable can be kept within the housing. This suppresses movement of the cable relative to the housing, thus preventing accidental contact between the cable and / or connector and objects outside the motor unit. This optimizes the operation of the electric work machinery. Attached Figure Description

[0013] Figure 1 This is a view of the mobile brush cutter 500a, which is equipped with the motor unit 2 of the embodiment, from the upper left front.

[0014] Figure 2 This is a view of the flat compactor 500b, which is equipped with the motor unit 2 of the embodiment, from the upper left front.

[0015] Figure 3 This is a view of the high-pressure washer 500c, which is equipped with the motor unit 2 of the embodiment, from the upper left front.

[0016] Figure 4 This is a view of the motor unit 2 of the embodiment from the upper right front.

[0017] Figure 5 This is a view of the battery cover 14 of the motor unit 2 in the embodiment being in the open position, viewed from the upper right front.

[0018] Figure 6 This is a cross-sectional view showing the structure near the hook 18 of the motor unit 2 in the embodiment.

[0019] Figure 7 This is a cross-sectional view showing the structure near the hook 18 of the motor unit 2 in the embodiment.

[0020] Figure 8 This is an exploded view of the housing 12 of the motor unit 2 in the embodiment.

[0021] Figure 9 This is a diagram observed from the lower left rear of the embodiment, looking at the motor unit 2.

[0022] Figure 10 This is a diagram observed from the lower right rear of the embodiment, showing the battery pack BP.

[0023] Figure 11 This is a view of the power adapter 94 of the embodiment from the lower left rear.

[0024] Figure 12 This is a view of the battery mounting portion 16 of the motor unit 2 in the embodiment, viewed from the upper right rear.

[0025] Figure 13 The figure shows the case where a power adapter 94 is installed in the battery mounting section 16 of the motor unit 2 in the embodiment.

[0026] Figure 14 This is a view of the first sealing member 122 of the motor unit 2 in the embodiment, viewed from the upper left rear.

[0027] Figure 15 This is a cross-sectional view showing the internal structure of the motor unit 2 in the embodiment.

[0028] Figure 16 This is an exploded view of the motor housing 138, control unit 140, and controller cover 142 of the motor unit 2 in the embodiment.

[0029] Figure 17 This is an exploded view of the rotating output section 6, electric motor 134, motor housing 138, and mounting base 144 of the motor unit 2 in the embodiment.

[0030] Figure 18 This is an exploded view of the first rotation output section 192 of the motor unit 2 in the embodiment.

[0031] Figure 19 This is an exploded view of the second rotation output section 194 of the motor unit 2 in the embodiment.

[0032] Figure 20 This is an exploded view of the third rotation output section 196 of the motor unit 2 in the embodiment.

[0033] Figure 21 This is a cross-sectional view showing the shaft locking mechanism 214 of the motor unit 2 in the embodiment.

[0034] Figure 22 This is an exploded view of the first covering device 254 of the motor unit 2 in the embodiment.

[0035] Figure 23 This is an exploded view of the second covering device 268 of the motor unit 2 in the embodiment.

[0036] Figure 24 This is an exploded view of the first input device 298 of the motor unit 2 in the embodiment.

[0037] Figure 25 This is an exploded view of the second input device 312 of the motor unit 2 in the embodiment.

[0038] Figure 26 This is a diagram showing the structure of the second support plate 314 of the second input device 312 of the motor unit 2 in the embodiment.

[0039] Figure 27 This is an exploded view showing the connection between the line 322 of the second input device 312 of the motor unit 2 in the embodiment and the pressing member 324.

[0040] Figure 28 This is an exploded view of the third input device 350 of the motor unit 2 in the embodiment.

[0041] Figure 29 This is a diagram observed from below when viewing the motor unit 2 of the embodiment.

[0042] Figure 30 This is a view of the connector 528 installed in the motor unit 2 of the embodiment from the lower left rear.

[0043] Figure 31 This is a view of the bottom cover 370 of the motor unit 2 installed in the embodiment from the lower left rear.

[0044] Figure 32 This is a diagram showing the motor unit 2 of the embodiment being mounted in an upward orientation on the work unit 500.

[0045] Figure 33 This is a diagram that schematically illustrates the shaft locking mechanism 214 of the modified motor unit 2. Detailed Implementation

[0046] Hereinafter, representative and non-limiting examples of the present invention will be described in detail with reference to the accompanying drawings. This detailed description is merely intended to present to those skilled in the art the details of preferred embodiments for carrying out the invention, and is not intended to limit the scope of the invention. Furthermore, in order to provide further improved motor units and electric work machinery, the disclosed additional features and inventions can be used separately or together with other features and inventions.

[0047] Furthermore, the features and combinations of processes disclosed in the following detailed description are not essential for carrying out the invention in the broadest sense, but are described only to illustrate representative specific examples of the invention. Moreover, when providing additional and useful embodiments of the invention, the various features of the following representative specific examples and the various features of the technical solutions described in the claims are not necessarily combined as in the specific examples described herein or in the order listed.

[0048] All features recited in this specification and / or claims are intended to be disclosed separately and independently of the structure of the features recited in the embodiments and / or claims, as a disclosure of the original application and as a limitation of the specific matters recited in the claims. Furthermore, all numerical ranges and descriptions relating to groups or sets are intended to disclose their intermediate structures as a disclosure of the original application and as a limitation of the specific matters recited in the claims.

[0049] In one or more embodiments, the housing may have a opposing wall opposite to the battery pack or the power adapter mounted on the battery mounting portion. Alternatively, the through hole may be disposed on the opposing wall.

[0050] According to the above structure, the battery pack or power adapter installed in the battery mounting section can be protected from contamination by water or dust from external sources using the opposing wall. Furthermore, according to the above structure, a through hole for holding the cable is provided on the opposing wall near the power adapter. Thus, the root of the cable (i.e., the part near the power adapter) is held in the housing. Therefore, the tip of the cable (i.e., the part with the connector) can move more freely, allowing the connector to be positioned as desired.

[0051] In one or more embodiments, the power adapter may be mounted to the battery mounting portion by sliding relative to the battery mounting portion in a predetermined first direction. Alternatively, the opposing wall may have a first wall portion located in the first direction when viewed from the power adapter mounted on the battery mounting portion. Alternatively, the through hole may be disposed in the first wall portion.

[0052] Based on the above structure, the direction in which the cable and connector pass through the through hole is approximately the same as the direction in which the power adapter is installed in the battery mounting section. Therefore, the user can install the power adapter in the battery mounting section while simultaneously passing the cable and connector through the through hole. In other words, the user can smoothly perform the operations of passing the cable and connector through the through hole and installing the power adapter in the battery mounting section. This reduces the time spent on passing the cable and connector through the through hole and installing the power adapter in the battery mounting section.

[0053] In one or more embodiments, the direction of the cable and the connector through the through hole is approximately orthogonal to the direction along the rotation axis of the rotating output section.

[0054] When viewed from the motor unit, the working unit is typically positioned along the rotation axis of the rotary output section. Therefore, when the cable is positioned along the rotation axis of the rotary output section, the cable and / or connector may come into contact with the working unit. According to the structure described above, the cable is held in the through-hole in a state approximately orthogonal to the direction along the rotation axis of the rotary output section. This prevents the cable from being positioned along the rotation axis of the rotary output section, thus preventing the cable and / or connector from contacting the working unit.

[0055] In one or more embodiments, the motor unit may include a first sealing member installed in the through hole through which the cable passes, sealing the through hole. Alternatively, the first sealing member may include: a sealing member body that engages with the through hole; a fitting hole that penetrates the sealing member body and engages with the outer peripheral surface of the cable; and a cutout that extends from an end of the sealing member body to the fitting hole.

[0056] According to the above structure, the through hole, where the cable has passed through, can be sealed using the first sealing member. This prevents foreign objects such as dust from entering the space where the power adapter is located through the through hole. Furthermore, if the structure required the tip of the cable (i.e., the portion with the connector) to pass through the through hole each time when fitting the fitting hole to the outer peripheral surface of the cable, the operation would be cumbersome. Regarding this, according to the above structure, even without the tip of the cable passing through the fitting hole, the fitting hole can be fitted to the outer peripheral surface of the cable by passing the cable through the cut. This reduces the cumbersome operation of fitting the fitting hole to the outer peripheral surface of the cable.

[0057] In one or more embodiments, the motor unit may further include a second sealing member installed in the through hole through which the cable does not pass, sealing the through hole. Alternatively, one of the first sealing member and the second sealing member may be selectively installed in the through hole.

[0058] Based on the above structure, in addition to the first sealing member corresponding to the case where the cable passes through the through hole, a second sealing member is also prepared for the case where the cable does not pass through the through hole. Therefore, when the power adapter is installed in the battery mounting section and the cable passes through the through hole, the through hole can be sealed by installing the first sealing member in the through hole. On the other hand, when the power adapter is not installed in the battery mounting section and the cable does not pass through the through hole, the through hole can be sealed by installing the second sealing member in the through hole.

[0059] In one or more embodiments, the motor unit may further include a battery cover that is movable relative to the housing between a closed position covering the battery pack or power adapter mounted on the battery mounting portion and an open position not covering the battery pack or power adapter mounted on the battery mounting portion.

[0060] Based on the above structure, the battery cover can protect the battery pack or power adapter installed in the battery mounting section from contamination by water or dust from the outside.

[0061] In one or more embodiments, the battery cover may be mounted on the housing in a manner that allows it to rotate between the closed position and the open position.

[0062] In the above structure, when the cable extending from the power adapter is free to move relative to the housing, the cable and / or connector may come into contact with the battery cover, potentially hindering the opening and closing of the battery cover. According to the above structure, by passing the cable through a through-hole provided in the housing, the cable can be held within the housing. This suppresses movement of the cable relative to the housing, thus preventing the cable and / or connector from obstructing the opening and closing of the battery cover.

[0063] In one or more embodiments, the motor unit may further include: a first surface parallel to the axial direction of the rotation axis of the rotary output portion; and a second surface orthogonal to the axial direction of the rotation axis of the rotary output portion. Alternatively, the motor unit may be mounted on the working unit such that at least one of the first surface and the second surface abuts against the working unit.

[0064] According to the above structure, the motor unit can be installed on the working unit in multiple postures (e.g., the posture in which the first surface abuts against the working unit, the posture in which the second surface abuts against the working unit).

[0065] (Example)

[0066] like Figure 1 , Figure 2 , Figure 3 As shown, motor unit 2 is selectively installed in various operating units 500. Motor unit 2 utilizes a battery pack BP (see reference). Figure 10 The electric motor 134 is driven by the power supplied by the power source (see reference). Figure 15 The work unit 500 uses the power generated by the motor unit 2 to perform its work. Alternatively, a universal engine unit can be installed in the work unit 500 to replace the motor unit 2. A universal engine unit could be, for example, the GX35 sold by Honda R&D Co., Ltd. In other words, either the motor unit 2 or the engine unit can be selectively used in the work unit 500.

[0067] Figure 1 The work unit 500 shown is a mobile brush cutter 500a. Figure 2 The work unit 500 shown is a plate compactor 500b. Figure 3 The work unit 500 shown is a high-pressure washer 500c. The work unit 500 is not limited to this; for example, it could be a winch, scraper, trowel, tamper, push lawnmower, blower, sprayer, concrete mixer, concrete saw, road roller, etc. A motor unit 2 is installed in the work unit 500 to operate it. In this specification, the structure with the motor unit 2 installed in the work unit 500 is also referred to as an electric work machine.

[0068] like Figure 4 As shown, the motor unit 2 includes a motor unit body 4 and a rotary output section 6. The motor unit body 4 has a generally rectangular head 8 and a neck 10 protruding forward from the front surface of the head 8. The rotary output section 6 is exposed in front of the space of the neck 10. The rotary output section 6 is connected to an electric motor 134 housed inside the motor unit body 4 (see reference). Figure 15 Connecting to the work unit 500, the power of the electric motor 134 is transmitted to the work unit 500 (see reference). Figure 1 , Figure 2 , Figure 3 Output. The rotary output unit 6 has a rotating element that rotates about the rotation axis RX (in Figure 4In the example shown, the first spindle 200 is used. In this embodiment, the direction along the rotation axis RX of the rotary output section 6, that is, the direction in which the rotary output section 6 faces, is defined as the forward direction, and the opposite direction of the forward direction is defined as the rearward direction. In addition, the mounting surface 188, which is orthogonal to the rearward direction and is located on the lower side (see reference 188), is defined as the direction of rotation. Figure 9 The direction in which the battery cover 14 faces is set as the downward direction, and the opposite direction of the downward direction is set as the upward direction. In addition, the direction in which the hook 18, which is orthogonal to the front-back direction and the up-down direction, faces is set as the right direction, and the opposite direction of the right direction is set as the left direction.

[0069] The front-to-back dimension of the motor unit body 4 is in the range of 180mm to 200mm, for example, 200mm. The vertical dimension of the motor unit body 4 is in the range of 275mm to 295mm, for example, 285mm. The horizontal dimension of the motor unit body 4 is in the range of 185mm to 205mm, for example, 195mm.

[0070] like Figure 4 , Figure 5 As shown, the motor unit body 4 has a housing 12 and a battery cover 14. Both the housing 12 and the battery cover 14 are made of resin material. The housing 12 has a battery mounting section 16 for mounting and removing the battery pack BP. Details will be described later, but a power adapter 94 (see reference) can also be mounted on the battery mounting section 16. Figure 11 The battery cover 14 replaces the battery pack BP. The battery cover 14 is configured to be in a closed position covering the battery pack BP (or power adapter 94) mounted on the battery mounting section 16. Figure 4 The positions shown) and the open positions that do not cover the battery pack BP (or power adapter 94) installed in the battery mounting section 16 (i.e., Figure 5 The battery cover 14 is mounted on the housing 12 in a manner that allows it to rotate between the indicated positions. A hook 18 is provided on the battery cover 14 to keep the battery cover 14 in the closed position.

[0071] like Figure 6 As shown, hook 18 engages with recess 20 formed in housing 12. Furthermore, hook 18 is rotatably mounted to battery cover 14 via pin 22 extending in the front-rear direction. Hook 18 includes an operating portion 24 located above when viewed from pin 22 and a claw portion 26 located below when viewed from pin 22. Operating portion 24 is forced to the right relative to battery cover 14 by coil spring 28. Consequently, claw portion 26 is forced to the left (i.e., towards the recess 20). Figure 6 In the state shown, even if one wants to open the battery cover 14, the interference between the claw 26 and the upper wall of the recess 20 prevents the battery cover 14 from being opened further.

[0072] like Figure 7As shown, when the operating part 24 is pressed to the left against the force of the coil spring 28, the claw 26 disengages from the recess 20. That is, the engagement between the hook 18 and the recess 20 is released. In this state, the claw 26 does not interfere with the recess 20, so the battery cover 14 can be opened to the open position. Furthermore, when the hook 18 is engaged with the recess 20 again, the user can simply close the battery cover 14 without pressing the operating part 24. This is because when the battery cover 14 is closed, the upper wall of the recess 20 pushes the claw 26 to the right against the force of the coil spring 28. Then, when the battery cover 14 is closed further, the claw 26 passes over the upper wall of the recess 20 and enters the recess 20 under the force of the coil spring 28. Thus, the hook 18 engages with the recess 20.

[0073] like Figure 8 As shown, the housing 12 includes a left side member 30, a right side member 32, and an upper side member 34. The left side member 30 defines the shape of the left half of the housing 12. The right side member 32 defines the shape of the right half of the housing 12. The upper side member 34 is disposed at the upper end of the left side member 30. Although not shown, the upper side member 34 bears the trademark of the manufacturer of the motor unit 2. However, the motor unit 2 is installed in the working unit 500 (see reference). Figure 1 , Figure 2 , Figure 3 However, the manufacturer selling the electric work platform (i.e., the seller of the electric work platform) may not be the same as the manufacturer of motor unit 2. From the seller's perspective, sometimes they may want to replace the trademark attached to motor unit 2 with their own. In this case, the seller can manufacture an upper component 34 bearing their own trademark and exchange it for the upper component 34 pre-installed with motor unit 2. Thus, the seller can easily replace the trademark attached to motor unit 2 with their own.

[0074] like Figure 4 As shown, the housing 12 has a first portion 36 that, together with the battery cover 14, defines the head 8 of the motor unit body 4 and a second portion 38 that defines the neck 10 of the motor unit body 4.

[0075] like Figure 5 , Figure 9As shown, the first part 36 of the housing 12 includes an upper bottom wall 40, an upper front wall 42, an upper left wall 44, an upper rear wall 46, a lower bottom wall 48, a lower front wall 50, a lower left wall 52, a lower rear wall 54, and a lower right wall 56. The upper bottom wall 40 extends in the front-rear and left-right directions at the center of the motor unit 2. A battery mounting portion 16 is provided on the upper bottom wall 40. The upper front wall 42 extends upward from the front end of the upper bottom wall 40, opposite the front surface of the battery pack BP (or power adapter 94) mounted on the battery mounting portion 16. The upper left wall 44 extends upward from the left end of the upper bottom wall 40, opposite the left surface of the battery pack BP (or power adapter 94) mounted on the battery mounting portion 16. The upper rear wall 46 extends upward from the rear end of the upper bottom wall 40, opposite the rear surface of the battery pack BP (or power adapter 94) mounted on the battery mounting portion 16. Additionally, a cover support portion 60 is formed at the upper end of the upper left wall 44, supporting the battery cover 14 so that it can rotate about an axis 58 extending in the front-rear direction. Furthermore, the lower bottom wall 48 extends in the front-rear and left-right directions at the lower part of the motor unit 2, defining the lower surface of the motor unit 2. The lower front wall 50 extends vertically between the front end of the lower bottom wall 48 and the front end of the upper bottom wall 40. The front surface of the lower front wall 50 is flush with the front surface of the upper front wall 42. The lower left wall 52 extends vertically between the left end of the lower bottom wall 48 and the left end of the upper bottom wall 40. The left surface of the lower left wall 52 is flush with the left surface of the upper left wall 44. The lower rear wall 54 extends vertically between the rear end of the lower bottom wall 48 and the rear end of the upper bottom wall 40. The rear surface of the lower rear wall 54 is flush with the rear surface of the upper rear wall 46. The lower right wall 56 extends vertically between the right end of the lower bottom wall 48 and the right end of the upper bottom wall 40.

[0076] like Figure 5 As shown, the second part 38 of the housing 12 includes a protrusion 62, a base 64, and a bottom 66. The protrusion 62 protrudes forward from the front surface of the first part 36. A mounting base 144 (see reference) is formed at the front end of the protrusion 62. Figure 15 The front mounting surface 182 exposes a front exposure opening 68. The base portion 64 extends between the front surface of the first portion 36 and the upper surface of the protrusion 62. Front mounting openings 70a and 70b for mounting buttons, displays, etc. are formed on the front surface of the base portion 64. In this embodiment, a power button 72 for turning the main power supply of the motor unit 2 on / off is provided in the front mounting opening 70a. A display portion 74 for displaying various states of the motor unit 2 (e.g., the on / off state of the main power supply of the motor unit 2, the remaining amount of the battery pack BP, etc.) is provided in the front mounting opening 70b.

[0077] like Figure 9As shown, the bottom 66 protrudes downward from the lower surface of the protrusion 62. The lower surface of the bottom 66 is flush with the lower surface of the first part 36 (specifically, the lower surface of the lower side wall 48). A mounting base 144 (see reference 1) is formed across the bottom 66 and the lower side wall 48. Figure 15 The lower mounting surface 188 exposes a lower exposed opening 76. Additionally, rear-side configuration openings 78a and 78b are formed on the rear surface of the first part 36 (specifically, the rear surface of the upper rear wall 46). The shapes of the rear-side configuration openings 78a and 78b are respectively the same as those of the front configuration openings 70a and 70b (refer to...). Figure 4 The shapes are the same. Therefore, buttons, displays, etc., can also be configured with openings 78a and 78b on the rear side. In this embodiment, closing plates 80a and 80b are provided to close the openings 78a and 78b on the rear side, and buttons, displays, etc. are not configured. In addition, the closing plate 80a can also be the same as the power button 72 (see reference 72). Figure 4 The enclosure plate 80b can also be swapped with the display unit 74 (see reference). Figure 4 ) Replace.

[0078] like Figure 10 As shown, the battery pack BP includes: a battery housing 82 that houses multiple rechargeable secondary battery cells (e.g., lithium-ion battery cells); and a hook 84 that is movably held in the battery housing 82. The hook 84 has an engaging portion 86 and an operating portion 88. The engaging portion 86 generally protrudes to the outside of the battery housing 82. When the operating portion 88 is pressed into the inside of the battery housing 82, the engaging portion 86 moves entirely into the inside of the battery housing 82. Additionally, a slit 90 and a guide rail 92 are formed in the battery housing 82. The slit 90 communicates with the inside and outside of the battery housing 82. The slit 90 is formed corresponding to the positions of battery terminals (not shown) housed inside the battery housing 82. Charging and discharging of the multiple secondary battery cells are performed via the battery terminals. Furthermore, Figure 10 The front, back, up, down, left, and right directions shown are the same as those of the battery mounting section 16 (see reference). Figure 5 The front, back, up, down, left, and right directions of the battery pack BP correspond at that time.

[0079] like Figure 11As shown, the power adapter 94 includes an adapter housing 96 and a hook 98 movably held within the adapter housing 96. The hook 98 includes an engaging portion 100 and an operating portion 102. The engaging portion 100 typically protrudes to the outside of the adapter housing 96. When the operating portion 102 is pressed into the interior of the adapter housing 96, the engaging portion 100 moves entirely into the interior of the adapter housing 96. Additionally, a slit 104 and a guide rail 106 are formed in the adapter housing 96. The slit 104 communicates between the interior and exterior of the adapter housing 96. Furthermore, the power adapter 94 is connected to one end of a power cable 110 via a connector 108. The connector 108 is rotatable relative to the power adapter 94 about a rotation axis extending in the front-rear direction. At the other end of the power cable 110 is a power connector 112 for connection to an external power source (e.g., a power supply unit, generator, commercial power supply, not shown). An adapter terminal (not shown) electrically connected to the power connector 112 via the power cable 110 is housed inside the adapter housing 96. The slit 104 is formed corresponding to the position of the adapter terminals housed inside the adapter housing 96. Discharge from an external power source is achieved via the adapter terminals. The power adapter 94 differs from the battery pack BP in that it does not have a secondary battery and supplies power from an external power source to the motor unit 2. Furthermore, Figure 11 The front, back, up, down, left, and right directions shown are the same as those of the battery mounting section 16 (see reference). Figure 5 The power adapter 94 corresponds to the front, back, up, down, left and right directions when it is in use.

[0080] like Figure 12 As shown, the battery mounting section 16 includes: a guide groove 114, which guides the battery pack BP's guide rail 92 (or the power adapter 94's guide rail 106) (see reference). Figure 10 , Figure 11 It can be stored in a way that allows it to slide in the left and right direction; the engaging slot 116 engages with the engaging part 86 of the battery pack BP (or the engaging part 100 of the power adapter 94) (see reference). Figure 10 , Figure 11 ) engage; and connection terminal 118, which corresponds to the battery terminal of battery pack BP (or the adapter terminal of power adapter 94).

[0081] In the battery pack BP (refer to) Figure 10 When installed in the battery mounting section 16, the battery pack BP slides to the left relative to the battery mounting section 16. This allows it to move along the guide rail 92 (see reference). Figure 10 ) Enters the guide groove 114, engaging part 86 (refer to Figure 10 The battery pack BP is engaged with the engaging slot 116, thus completing the installation of the battery pack BP. With the battery pack BP installed in the battery mounting section 16, the connecting terminal 118 passes through the slit 90 (see reference). Figure 10 ) Enter the battery casing 82 (refer to Figure 10 The battery is inserted into the battery mounting section 16 and engages with the corresponding battery terminal. Thus, the battery terminal and the connection terminal 118 are electrically connected. Furthermore, when removing the battery pack BP from the battery mounting section 16, the operating section 88 (see reference 118) is pressed in. Figure 10 The engagement between the engaging part 86 and the engaging groove 116 is released, and then the battery pack BP is slid to the right relative to the battery mounting part 16. As a result, the guide rail 92 disengages from the guide groove 114, thereby completing the disassembly of the battery pack BP.

[0082] In the power adapter 94 (refer to) Figure 11 When installed in the battery mounting section 16, the power adapter 94 slides to the left relative to the battery mounting section 16. This allows it to move along the guide rail 106 (see reference 106). Figure 11 ) Enters the guide groove 114, engaging part 100 (refer to Figure 11 The power adapter 94 is installed by engaging with the locking slot 116. With the power adapter 94 installed in the battery mounting section 16, the connecting terminal 118 passes through the slit 104 (see reference 104). Figure 11 ) Enter the adapter housing 96 (refer to Figure 11 Inside the adapter 94, it engages with the corresponding adapter terminal. Thus, the adapter terminal and the connection terminal 118 are electrically connected. Furthermore, when removing the power adapter 94 from the battery mounting section 16, it is pressed into the operating section 102 (see reference 118). Figure 11 The engagement between the engaging part 100 and the engaging groove 116 is released, and the power adapter 94 is slid to the right relative to the battery mounting part 16. Thus, it disengages from the guide groove 114 via the guide rail 106, thereby completing the disassembly of the power adapter 94.

[0083] like Figure 13 As shown, a through hole 120 is formed on the upper left wall 44 of the housing 12, allowing the power supply cable 110 and the power supply connector 112 to pass through. A first sealing member 122 is installed in the through hole 120, sealing the through hole 120 when the cable 110 passes through. The first sealing member 122 is made of rubber. The rubber hardness (Hs JIS A) of the rubber material used in the first sealing member 122 is in the range of 50 to 90 degrees, or in the range of 65 to 75 degrees, for example, 70 degrees.

[0084] like Figure 14 As shown, the first sealing member 122 includes a sealing member body 124, a fitting hole 126, a cutout 128, and a mounting groove 130. The fitting hole 126 penetrates the sealing member body 124. The diameter of the fitting hole 126 is the same as that of the power supply cable 110 (see reference). Figure 11The diameters of the two holes are approximately the same. Therefore, the fitting hole 126 can fit with the outer peripheral surface of the power supply cable 110. The cut 128 extends from the end of the sealing member body 124 to the fitting hole 126. The user flexes the sealing member body 124 by opening the cut 128, allowing the power supply cable 110 to pass through the cut 128, thereby enabling the fitting hole 126 to fit with the outer peripheral surface of the power supply cable 110. Thus, the first sealing member 122 can be installed on the power supply cable 110. In addition, a mounting groove 130 is formed at the end of the sealing member body 124. Through the through hole 120 (see reference) Figure 12 The peripheral portion of the through hole 120 enters the mounting groove 130, thereby installing the first sealing member 122 into the through hole 120. Furthermore, the protrusion height of the left wall of the mounting groove 130 is greater than the protrusion height of the right wall of the mounting groove 130. Therefore, the peripheral portion of the through hole 120 enters the mounting groove 130 over the right wall of the mounting groove 130. Consequently, the first sealing member 122 is installed in the through hole 120 by being pressed into it with its right surface facing the through hole 120.

[0085] like Figure 9 As shown, in power adapter 94 (refer to...) Figure 11 Not installed in battery mounting section 16 (see reference) Figure 12 The power supply cable 110 (refer to) Figure 11 If the through hole 120 is not passed, the first sealing member 122 is replaced (see reference). Figure 14 The second sealing member 132 is installed in the through hole 120. The second sealing member 132 uses the same rubber material as the first sealing member 122. The second sealing member 132 is installed in the through hole 120 to seal the through hole 120 when the power supply cable 110 is not passing through. For example, in battery pack BP (refer to...) Figure 10 When installed in the battery mounting section 16, the second sealing member 132 is installed in the through hole 120.

[0086] When in Figure 12 The battery mounting section 16 shown is used to mount the power adapter 94 (see reference). Figure 11 In the case of ), the user first removes the sealing components 122 and 132 from the through hole 120 (refer to...). Figure 14 , Figure 9 Next, the user passes the power connector 112 through the through hole 120 and the power cable 110 through the through hole 120 to install the power adapter 94 into the battery mounting section 16. Then, the user installs the first sealing member 122 (see reference 120). Figure 14The power cable 110 is installed in the space outside the housing 12 (i.e., the space to the left of the through hole 120), and the first sealing member 122 slides to the right along the outer periphery of the power cable 110, thereby installing the first sealing member 122 in the through hole 120 through which the power cable 110 passes. Thus, as... Figure 13 As shown, a power adapter 94 can be installed in the battery mounting section 16, and the through hole 120 through which the power cable 110 passes is sealed by the first sealing member 122. Alternatively, in another example, the user can install the first sealing member 122 onto the power cable 110 located in the space inside the housing 12 (i.e., the space to the right of the through hole 120), allowing the first sealing member 122 to slide to the left along the outer periphery of the power cable 110, thereby installing the first sealing member 122 into the through hole 120 through which the power cable 110 passes. In this case, the first sealing member 122 can also be... Figure 13 The posture shown is a posture with the left and right directions reversed.

[0087] like Figure 15 As shown, the motor unit 2 also includes an electric motor 134, a centrifugal fan 136, a motor housing 138, a control unit 140, a controller cover 142, and a mounting base 144. The electric motor 134, centrifugal fan 136, motor housing 138, control unit 140, controller cover 142, and mounting base 144 are housed in the outer casing 12.

[0088] The electric motor 134 includes a motor shaft 146, a rotor 148 fixed to the motor shaft 146, and a stator 150 disposed radially outward of the rotor 148. The rotor 148 has permanent magnets 149 with magnetic poles arranged circumferentially. The stator 150 has teeth (not shown) with coils 151 wound around them. The electric motor 134 is a so-called internal rotor type electric motor. The motor shaft 146 is rotatably supported on the motor housing 138 and the mounting base 144 by means of bearings 152 and 190, respectively. The maximum output value of the electric motor 134 can be in the range of 0.5kW to 2.0kW, for example, in the range of 0.5kW to 1.5kW, for example, in the range of 0.5kW to 1.2kW, for example, in the range of 0.5kW to 1.0kW. In addition, the electric motor 134 is housed in the motor housing 138. A controller cover 142 is mounted on the rear of the motor housing 138. The controller cover 142 supports the control unit 140. Therefore, the control unit 140 is positioned offset rearward from the rear end of the motor shaft 146. The control unit 140 includes a control circuit board 154 and a base housing 156 on which the control circuit board 154 is fixed using screws (not shown). The control circuit board 154 is arranged with its thickness direction aligned front-to-back. The connection terminal 118 between the control circuit board 154 and the battery mounting portion 16 (see reference...) Figure 12Electrical connection. The control circuit board 154 supplies power to the electric motor 134 using the power supplied to the connection terminal 118. The control circuit board 154 controls the output of the electric motor 134 by adjusting the power supplied to the electric motor 134. The substrate housing 156 is made of a metallic material (e.g., aluminum alloy). The substrate housing 156 has a housing body 158 on which the control circuit board 154 is fixed and a plurality of fins 160 protruding forward from the front surface of the housing body 158.

[0089] like Figure 16 As shown, the controller cover 142 includes: a controller cover body 162 that opens rearward; a cylindrical portion 164 formed in the center of the front wall of the controller cover body 162; and a first internal vent 166 formed in the connection between the right wall and the front wall of the controller cover body 162. The first internal vent 166 is connected in the left-right direction to the first air inlet 262 of the first covering device 254 (see reference). Figure 4 In contrast, the controller cover 142 is mounted on the motor housing 138 by fitting the inner surface of the cylindrical portion 164 with the rear end of the outer peripheral surface of the motor housing 138. The motor housing 138 has a motor housing body 168 and a second internal vent 170 that penetrates the rear wall of the motor housing body 168 in the front-rear direction. The second internal vent 170 communicates the interior of the controller cover 142 and the interior of the motor housing 138.

[0090] like Figure 15 As shown, the centrifugal fan 136 is fixed to the motor shaft 146 at a position forward of the front end of the rotor 148. The centrifugal fan 136 includes a circular plate portion 136a extending radially (i.e., in the up-down and left-right directions) along the rotation axis RX, and a plurality of blades 136b protruding rearward from the rear surface of the circular plate portion 136a. The centrifugal fan 136 is positioned in the left-right direction relative to the protrusion 62 formed in the housing 12 (see reference). Figure 4 The exhaust vents 172 on the left and right walls of the ) (refer to Figure 4 , Figure 9 (Relative to) The centrifugal fan 136 generates cooling air as the motor shaft 146 rotates to cool the electric motor 134 and the control unit 140. The cooling air passes through the first air inlet 262 of the first cover 254 (see reference). Figure 4 After flowing from the outside of the outer casing 12 into the interior, it passes through the first internal vent 166 (see reference). Figure 16 Cooling air flows from the outside of the controller housing 142 into the inside. After passing through multiple fins 160, the cooling air flowing into the interior of the controller housing 142 passes through the second internal vent 170 (see reference). Figure 16Cooling air flows from inside the controller housing 142 into the motor housing 138. After passing through the electric motor 134 and the centrifugal fan 136, the cooling air flowing into the motor housing 138 exits from the inside of the housing 12 to the outside via the exhaust port 172. The cooling air dissipates the heat generated by the control unit 140 and the electric motor 134 to the outside of the housing 12.

[0091] like Figure 17 As shown, the mounting base 144 is fixed to the front end of the motor housing body 168 using four screws 174. The mounting base 144 includes a cylindrical portion 176, a bottom shell portion 178, and a partition wall portion 180. The inner circumferential surface of the cylindrical portion 176 has a generally cylindrical shape. A front mounting surface 182 extending in the vertical and horizontal directions is formed at the front end of the cylindrical portion 176. The front mounting surface 182 is a surface orthogonal to the axis of rotation RX. Four threaded holes 182a are formed on the front mounting surface 182. One of the four threaded holes 182a is arranged in the upper left, lower left, upper right, and lower right portions of the front mounting surface 182. Details will be described later. The motor unit 2 can be mounted on the working unit 500 in a state where the front mounting surface 182 abuts against the working unit 500.

[0092] The bottom shell portion 178 is connected to the lower surface of the cylindrical portion 176 and extends in the front-back and left-right directions. Six threaded protrusions 184 and reinforcing ribs 186 are formed across the lower surfaces of the cylindrical portion 176 and the bottom shell portion 178. The six threaded protrusions 184 and reinforcing ribs 186 protrude downwards from the lower surface of the cylindrical portion 176 (or the lower surface of the bottom shell portion 178). The reinforcing ribs 186 connect the outer peripheral surfaces of the six threaded protrusions 184. Figure 9 As shown, each of the six threaded bosses 184 has a lower mounting surface 188 extending in the front-rear and left-right directions at its lower end. The lower mounting surfaces 188 are flattened relative to each of the six threaded bosses 184. The lower mounting surfaces 188 are parallel to the axis of rotation RX. For interchangeability with the GX35 sold by Honda R&D Co., Ltd., the lower mounting surfaces 188 are configured to be 75mm away from the axis of rotation RX in the vertical direction. Details will be described later. The motor unit 2 can be mounted on the working unit 500 in a state where the lower mounting surfaces 188 abut against the working unit 500.

[0093] like Figure 17 As shown, the partition wall 180 extends vertically and horizontally within the cylindrical portion 176. The partition wall 180 divides the internal space of the cylindrical portion 176 front to back. The partition wall 180 faces the front surface of the circular plate portion 136a of the centrifugal fan 136. The motor shaft 146 passes through the partition wall 180. The partition wall 180 supports the motor shaft 146 by means of a bearing 190, enabling it to rotate about the rotation axis RX. Figure 17 , Figure 18 As shown, the partition wall portion 180 has four threaded holes 180a. The four threaded holes 180a extend through the partition wall portion 180 in the front-to-back direction. The four threaded holes 180a are disposed near the inner surface of the cylindrical portion 176. One of the four threaded holes 180a is disposed in the upper, lower, left, and right portions of the partition wall portion 180.

[0094] like Figure 18 , Figure 19 , Figure 20 As shown, multiple rotary output sections 6 are prepared. The motor unit 2 selectively includes one of the multiple rotary output sections 6. In this embodiment, Figure 18 The rotary output unit 6 shown is also called "first rotary output unit 192", which will Figure 19 The rotary output unit 6 shown is also called "second rotary output unit 194". Figure 20 The rotary output unit 6 shown is also called "third rotary output unit 196". Various rotary output units 6 are connected to the work unit 500 in different ways.

[0095] like Figure 18 As shown, the first rotary output section 192 has a first support member 198 and a first spindle 200. The first support member 198 has a circular plate shape that extends in the vertical and horizontal directions. The first spindle 200 passes through the first support member 198. The first support member 198 is supported by a bearing 202 (see reference). Figure 15 The first spindle 200 is supported so that it can rotate about the rotation axis RX. The first support member 198 has four through holes 198a that align with the four threaded holes 180a of the partition wall portion 180. The first support member 198 is fixed to the front surface of the partition wall portion 180 by passing four screws 203 through the four through holes 198a of the first support member 198 and fastening them to the four threaded holes 180a of the partition wall portion 180.

[0096] like Figure 15As shown, the first main shaft 200 extends in the front-rear direction. An internal thread 200a is defined at the rear end (i.e., the base end) of the first main shaft 200. An external thread 146a, capable of threadedly engaging with the internal thread 200a, is defined at the front portion of the motor shaft 146. The first main shaft 200 is fixed to the motor shaft 146 by threading the external thread 146a and the internal thread 200a together. Therefore, the first main shaft 200 and the motor shaft 146 rotate integrally about the rotation axis RX. Furthermore, an external thread 200b is defined at the front end (i.e., the front end) of the first main shaft 200. An internal thread (not shown) capable of threadedly engaging with the external thread 200b is defined on a rotating element (e.g., an impeller of a water pump) included in a portion of the working unit 500. The first main shaft 200 is connected to the rotating element included in the working unit 500 by threading the external thread 200b and the internal thread together. Therefore, the first spindle 200 outputs the power of the electric motor 134 to the work unit 500 by rotating.

[0097] like Figure 17 As shown, two parallel flat surfaces 204 are formed on the outer circumferential surface of the motor shaft 146. The two flat surfaces 204 are positioned forward of the front surface of the circular plate portion 136a of the centrifugal fan 136 and rearward of the external thread 146a. During assembly, the internal thread 200a of the first main shaft 200 (refer to...) Figure 15 When tightening the external thread 146a of the motor shaft 146, the assembly operator can tighten the wrench 700 through the opening 702 (see reference). Figure 21 The wrench 700 engages with the two flat surfaces 204 to lock the rotation of the motor shaft 146. This allows the assembly operator to securely tighten the external thread 146a and the internal thread 200a, thus firmly fixing the first spindle 200 to the motor shaft 146. Similarly, when fixing the rotating element of the work unit 500 to the first spindle 200, the same procedure applies. Specifically, the assembly operator can lock the rotation of the first spindle 200, which is fixed to the motor shaft 146, by engaging the wrench 700's opening 702 with the two flat surfaces 204. This allows the assembly operator to securely tighten the external thread 200b of the first spindle 200 and the internal thread (not shown) defined by the rotating element of the work unit 500, thus firmly fixing the rotating element of the work unit 500 to the first spindle 200.

[0098] like Figure 21As shown, the mounting base 144 includes a tool space 206 that stores the wrench 700 in a position that engages with the two flat surfaces 204 of the motor shaft 146. When viewed from the two flat surfaces 204, the tool space 206 extends to the right. The tool space 206 is opposite to a tool opening 208 formed on the right wall of the protrusion 62 of the housing 12 in the left-right direction. The tool opening 208 communicates between the tool space 206 and the external space of the housing 12. The wrench 700 can pass through the tool opening 208 in the longitudinal direction (i.e., from the holding portion 704 towards the opening 702). Therefore, while holding the holding portion 704 of the wrench 700, the assembly operator inserts the opening 702 to the left into the tool opening 208, thereby engaging the opening 702 with the two flat surfaces 204. With the opening 702 of the wrench 700 engaged with the two flat surfaces 204, the length direction of the wrench 700 is approximately orthogonal to the axis of rotation RX. Furthermore, with the lower mounting surface 188 of the mounting base 144 placed on the flat mounting surface S, the direction from the space outside the housing 12 towards the tool space 206 via the tool opening 208 is approximately parallel to the mounting surface S. Therefore, with the motor unit 2 placed on the mounting surface S, the assembly operator can easily move the wrench 700 in and out of the tool opening 208. Additionally, the mounting base 144 also has an upper abutment surface 210 defining the upper edge of the tool space 206 and a lower abutment surface 212 defining the lower edge of the tool space 206. With the opening 702 of the wrench 700 engaged with the two flat surfaces 204, the upper abutment surface 210 and the lower abutment surface 212 are respectively opposite to the holding portion 704 of the wrench 700 in the circumferential direction of the axis of rotation RX. The assembly workers will use external thread 146a (refer to...) Figure 15 ) and internal thread 200a (refer to) Figure 15 When the components are tightened together, torque is applied to the motor shaft 146. At this time, the wrench 700, which engages with the motor shaft 146, rotates integrally with the motor shaft 146 around the rotation axis RX, and soon comes into contact with the upper abutment surface 210 (or the lower abutment surface 212). With the wrench 700 in contact with the upper abutment surface 210 (or the lower abutment surface 212), a force (i.e., a reaction force) is applied to the wrench 700 from the upper abutment surface 210 (or the lower abutment surface 212) to overcome the torque caused by the thread tightening and lock the motor shaft 146. As a result, the assembly operator does not need to apply force to the wrench 700 to obtain the reaction force, and thus the assembly operator can tighten the threads with the wrench 700 released. In this embodiment, the two flat surfaces 204, the tool space 206, the upper abutment surface 210, the lower abutment surface 212, and the tool opening 208 are collectively referred to as the "axis locking mechanism 214".

[0099] like Figure 18As shown, the wrench 700, housed in the tool space 206, is partially housed inside the housing 12. Furthermore, the wrench 700 housed in the tool space 206 partially protrudes into the space to the side of the mounting base 144, but not into the space in front of the mounting base 144 (specifically, the space in front of the front mounting surface 182). This prevents the wrench 700 from obstructing operations performed in the space in front of the mounting base 144 (e.g., fixing the first spindle 200 to the motor shaft 146, fixing the first support member 198 to the mounting base 144, connecting the rotating element of the work unit 500 to the first spindle 200).

[0100] like Figure 4 As shown, the tool opening 208 is normally closed by the cover 216. The cover 216 is fastened to the housing 12 and the mounting base 144 by screws 218.

[0101] like Figure 19 As shown, the second rotary output section 194 has a second support member 220 and a second main shaft 222. This is related to the first support member 198 (see reference 198). Figure 18 Similarly, the second support member 220 is fixed to the mounting base 144. The second support member 220 supports the second spindle 222 for rotation by means of a bearing 224. The second spindle 222 is similar to the first spindle 200 (see reference 1) in that it has a keyway 226 instead of an external thread 200b. Figure 18 The differences are as follows. In some working units 500, the rotating elements (e.g., the pulley 546 of the plate compactor 500b, see reference) are different. Figure 2 The second spindle 222 is equipped with a key (not shown) that engages with the keyway 226. The second spindle 222 is connected to the rotating element of the work unit 500 by engaging the keyway 226 and the key. Figure 19 In the example shown, this is also achieved by utilizing the shaft locking mechanism 214 (see reference). Figure 21 By locking the rotation of the motor shaft 146, the time spent on assembling the motor unit 2 (or assembling the electric work machinery) can be reduced. For example, the time spent on fixing the second spindle 222 to the motor shaft 146 and connecting the rotating elements of the work unit 500 to the second spindle 222 can be reduced.

[0102] like Figure 20As shown, the third rotary output section 196 includes a drive member 228, a first clutch pad 230, a second clutch pad 232, and a clutch spring 234. The drive member 228 has an internal thread 228a capable of threading into the external thread 146a of the motor shaft 146. The drive member 228 is fixed to the motor shaft 146 by threading the external thread 146a and the internal thread 228a together. Therefore, the drive member 228 and the motor shaft 146 rotate integrally about the rotation axis RX. The first clutch pad 230 has an arcuate shape. One end of the first clutch pad 230 is mounted to one end of the drive member 228 by means of a first bolt 236. The first clutch pad 230 is rotatable relative to the drive member 228 about the first bolt 236. A first friction member 238 is fixed to the outer periphery of the first clutch pad 230. The shape of the second clutch pad 232 is substantially the same as that of the first clutch pad 230. One end of the second clutch shoe 232 is mounted to the other end of the drive member 228 by means of a second bolt 240. The second clutch shoe 232 is rotatable relative to the drive member 228 about the second bolt 240. A second friction member 242 is fixed to the outer periphery of the second clutch shoe 232. A clutch spring 234 is mounted on both the first clutch shoe 230 and the second clutch shoe 232. The clutch spring 234 is, for example, a tension spring. The clutch spring 234 exerts a force on the first clutch shoe 230 and the second clutch shoe 232 in a direction that brings them closer together.

[0103] When the motor shaft 146 rotates about the rotation axis RX, the first clutch pad 230 and the second clutch pad 232 also rotate about the rotation axis RX. If the rotational speed of the motor shaft 146 increases, the centrifugal force applied to the first clutch pad 230 and the second clutch pad 232 increases, causing them to rotate in a direction of separation against the force exerted by the clutch spring 234. As a result, the first friction member 238 of the first clutch pad 230 and the second friction member 242 of the second clutch pad 232 press against the inner circumferential surface of the drum (not shown) provided in the working unit 500. Consequently, the rotation of the motor shaft 146 is transmitted to the drum, and the drum rotates integrally with the motor shaft 146 about the rotation axis RX.

[0104] exist Figure 20 In the example shown, this is also achieved by utilizing the shaft locking mechanism 214 (see reference). Figure 21 By locking the rotation of the motor shaft 146, the time spent on assembling the motor unit 2 (or assembling the electric work machinery) can be reduced. For example, the time spent on fixing the drive member 228 to the motor shaft 146 can be reduced.

[0105] like Figure 22As shown, the motor unit 2 includes a right-side appliance mounting portion 246 formed on the lower right wall 56 of the housing 12 and a first covering appliance 254 mounted on the right-side appliance mounting portion 246.

[0106] The right-side mounting portion 246 includes a right-side peripheral wall portion 248, a right-side connecting opening 250, and four threaded holes 252. The right-side peripheral wall portion 248 protrudes to the right from the outer surface of the lower right wall 56. The right-side peripheral wall portion 248 has a generally square frame shape. The right-side connecting opening 250 extends through the lower right wall 56 in a left-right direction. The right-side connecting opening 250 is surrounded by the right-side peripheral wall portion 248. The right-side connecting opening 250 allows communication between the interior and exterior of the housing 12.

[0107] The first covering device 254 includes a first air intake hood 256. The first air intake hood 256 has: a first air intake hood body 258, which fits into the right side peripheral wall portion 248; four through holes 260 formed on the upper left, lower left, upper right, and lower right portions of the first air intake hood body 258 respectively; and a first air inlet 262 formed in the center portion of the first air intake hood body 258. The four through holes 260 are aligned with the four threaded holes 252 of the right-side device mounting portion 246. The first air intake hood 256 is mounted to the right-side device mounting portion 246 by inserting four screws 264 through the four through holes 260 of the first air intake hood 256 and fastening them to the four threaded holes 252 of the right-side device mounting portion 246. Furthermore, the first air inlet 262 is arranged opposite to the right-side communicating opening 250. Accompanied by a centrifugal fan 136 (see reference...) Figure 15 The cooling air generated by the rotation of the air ) flows from the outside of the housing 12 into the inside through the first air inlet 262 and the right connecting opening 250.

[0108] It can also be like Figure 23 As shown, a second covering device 268 is installed on the right-side device mounting section 246 in place of the first covering device 254 (see reference). Figure 22 The second covering device 268 includes an inner shell 270 and a second air intake hood 272. The inner shell 270 includes: an inner shell body 274, which is generally square in shape; a filter vent 276 that extends through the inner shell 270 in a left-right direction; four perforated bosses 278 formed on the upper left, lower left, upper right, and lower right portions of the inner shell body 274; and a threaded boss 280 formed in the center of the inner shell body 274. A filter element such as a sponge (not shown) is disposed between the inner shell 270 and the second air intake hood 272. The four perforated bosses 278 align with the four threaded holes 252 of the right-side device mounting portion 246. Similar to the first air intake hood 256, the inner shell 270 is secured using four screws 264 (see reference). Figure 22The inner shell 270 is fastened to the right-side appliance mounting portion 246. Specifically, the inner shell 270 is mounted to the right-side appliance mounting portion 246 by passing four screws 264 through four hole bosses 278 of the inner shell 270 and fastening them to four threaded holes 252 of the right-side appliance mounting portion 246. The second air intake hood 272 includes: a second air intake hood body 282 covering the right surface of the inner shell 270; a second air intake port 284 penetrating the second air intake hood body 282 in a left-right direction; and a threaded member 286 rotatably mounted to the center of the second air intake hood body 282. The second air intake hood 272 is fixed to the inner shell 270 by threading the threaded member 286 to the threaded bosses 280 of the inner shell 270. The second air intake port 284 is arranged in a left-right direction with the filter vent 276 and the right-side connecting opening 250, respectively. Accompanied by a centrifugal fan 136 (see reference...) Figure 15 The cooling air generated by the rotation of the air intake 284 flows into the interior of the housing 12 from the outside through the second air intake 284, the filter vent 276, and the right-side connecting opening 250. Additionally, the screw member 286 has a user-operable knob 288. The user can tighten or loosen the screw member 286 by operating the knob 288. By loosening the screw member 286, the user can remove the second air intake hood 272 from the inner housing 270. The user can replace the filter element while the second air intake hood 272 is removed from the inner housing 270. The second cover 268 can use the filter element to prevent liquids (water, pre-mixed concrete, etc.) and dust from entering the interior of the housing 12.

[0109] As described above, the motor unit 2 selectively includes one of a variety of covering devices. Figure 22 The first covering device 254 shown is suitable, for example, for situations where it is desirable to manufacture the motor unit 2 relatively inexpensively. Figure 23 The second covering device 268 shown is suitable, for example, for use of the motor unit 2 in an environment where liquids or dust may be present.

[0110] like Figure 24 As shown, the motor unit 2 has: a left-side appliance mounting portion 290 formed on the lower left wall 52 of the housing 12; and a first input appliance 298 mounted on the left-side appliance mounting portion 290.

[0111] The left-side appliance mounting portion 290 includes a left-side peripheral wall portion 292, a left-side connecting opening 294, and four threaded holes 296. The left-side peripheral wall portion 292 protrudes to the left from the outer surface of the lower left wall 52. The left-side peripheral wall portion 292 has a generally square frame shape. The left-side connecting opening 294 extends through the lower left wall 52 in a left-right direction. The left-side connecting opening 294 is surrounded by the left-side peripheral wall portion 292. The left-side connecting opening 294 allows communication between the interior and exterior of the housing 12.

[0112] The first input device 298 includes a first support plate 300, a first device cover 302, a switch 304, and a first lever 306. The first support plate 300 is approximately square in shape. The first device cover 302 covers the left surface of the first support plate 300. The first support plate 300 has four through holes 300a that align with the four threaded holes 296 of the left-side device mounting portion 290. The first device cover 302 also has four through holes 302a that align with the four threaded holes 296 of the left-side device mounting portion 290. The first support plate 300 and the first appliance cover 302 are respectively mounted on the left appliance mounting part 290 by passing four screws 307 through the four through holes 302a of the first appliance cover 302 and the four through holes 300a of the first support plate 300, and fastening them to the four threaded holes 296 of the left appliance mounting part 290. The switch 304 is supported on the first support plate 300. The first lever 306 is mounted on the first appliance cover 302 in a manner that allows it to rotate relative to the first appliance cover 302 about a rotation axis extending in the left and right directions. The first lever 306 has an operating part 308 disposed on the left surface of the first appliance cover 302 and a pressing part 310 disposed on the right surface of the first appliance cover 302. The operating part 308 is operable by the user. The pressing part 310 abuts against the switch 304. When the first lever 306 is operated, the switch 304 is pressed in using the pressing part 310. The amount of pressure applied to the switch 304 varies depending on the position of the first lever 306. The switch 304 and the control circuit board 154 (see reference) Figure 15 The electrical connection allows the input amount to be sent to the control circuit board 154. The control circuit board 154 controls the electric motor 134 (see reference 304) based on the input amount of the switch 304 (i.e., the position of the first lever 306). Figure 15 The output of the electric motor 134 is adjusted accordingly by controlling the increase or decrease of the amount of pressure applied to the switch 304 via the control circuit board 154. Thus, by adjusting the position of the first lever 306, the user can adjust the amount of pressure applied to the switch 304, thereby adjusting the output of the electric motor 134.

[0113] It can also be like Figure 25 As shown, a second input device 312 is installed on the left-side device mounting section 290 instead of the first input device 298 (see reference). Figure 24The second input device 312 includes a second support plate 314, a second device cover 316, a switch 318, a pipe 320, a wire 322, and a press-in member 324. The second support plate 314 is generally square in shape. The second device cover 316 covers the left surface of the second support plate 314. The second support plate 314 has four through holes 314a that align with the four threaded holes 296 of the left device mounting portion 290. The second device cover 316 also has four through holes 316a that align with the four threaded holes 296 of the left device mounting portion 290. By inserting four screws 307 through the four through holes 316a of the second appliance cover 316 and the four through holes 314a of the second support plate 314, respectively, and fastening them to the four threaded holes 296 of the left appliance mounting portion 290, the second support plate 314 and the second appliance cover 316 are respectively mounted on the left appliance mounting portion 290. Furthermore, a switch support piece 326 for supporting the switch 318, a tube support piece 328 for supporting the tube 320, and a support protrusion 330 for supporting the press-in member 324 are formed on the left surface of the second support plate 314. In addition, the second support plate 314 has a connection with the first support plate 300 (see reference...). Figure 24 The common shape. Therefore, the second support plate 314 can be in the first input device 298 (refer to) Figure 24 It is shared between the first input device and the second input device 312.

[0114] like Figure 26 As shown, the press-in member 324 includes: a shaft portion 332, which is supported on a support protrusion 330 (see reference). Figure 24 The arm portion 334 protrudes from the outer peripheral surface of the shaft portion 332; and the press-in portion 336 is located in the middle of the arm portion 334. The shaft portion 332 is rotatable relative to the support protrusion 330 about a rotation axis extending in the left-right direction. The press-in portion 336 abuts against the switch 318. In addition, the tube 320 is fixed to the tube support plate 328 by two nuts 338 and two washers 340. The tube 320 extends in the front-back direction and passes through the second appliance cover 316 (see reference). Figure 25 The front wall of the second appliance cover 316. The wire 322 passes through the interior of the tube 320 and crosses the exterior and interior of the second appliance cover 316. The base end of the wire 322 is connected to a second lever 342 that can be operated by the user. The second lever 342 is, for example, located at a user-operated part where the operation is performed using an electric work machine (e.g., Figure 1 (See handle 520). The front end of the wire 322 is connected to the upper end of the arm 334 of the push-in member 324. When the second lever 342 is operated to pull the wire 322 into the tube 320, the push-in member 324 rotates about the support protrusion 330, pressing the switch 318 in. The user can adjust the amount of wire 322 pulled in, thereby adjusting the amount of switch 318 pressed in, and thus adjusting the electric motor 134 (see reference). Figure 15The output of the electric motor 134 can be adjusted even when the motor unit 2 is in a position that is difficult for the user to reach, because the second lever 342 is positioned in a position that is easy for the user to reach.

[0115] like Figure 27 As shown, a cylindrical front-end fitting 344 is mounted on the front end of the line 322. However, when the line 322 is prepared by manufacturers other than the manufacturer of the motor unit 2 (e.g., manufacturers of electric work machinery), it is impossible to standardize the size (i.e., diameter) of the front-end fitting 344. As a result, cases where the front end of the line 322 is equipped with a large-diameter front-end fitting 344 (not shown) and cases where the front end of the line 322 is equipped with a small-diameter front-end fitting 344 coexist. Therefore, the second input device 312 of this embodiment includes a cylindrical connector member 346 that can be attached to and detached from the small-diameter front-end fitting 344. The arm 334 of the press-in member 324 is used to rotatably store the connector member 346 along the cylindrical surface 348 of the outer peripheral surface of the connector member 346. Therefore, when the front end of the line 322 is equipped with a small-diameter front-end fitting 344, the front end of the line 322 can be connected to the arm 334 of the press-in member 324 by means of the connector member 346. On the other hand, when the front end of the line 322 is provided with a large-diameter front end fitting 344, the connector member 346 is not used, and the front end fitting 344 is directly housed in the cylindrical surface 348, thereby enabling the front end of the line 322 to be connected to the arm 334 of the press-fit member 324. Therefore, the second input device 312 can accommodate both the large-diameter front end fitting 344 and the small-diameter front end fitting 344.

[0116] It can also be like Figure 28 As shown, a third input device 350 is installed on the left-side device mounting section 290 instead of the first input device 298 (see reference). Figure 24The third input device 350 includes a third support plate 352, a third device cover 354, a communication cable 356, and a communication connector 358. The third support plate 352 is generally square in shape. The third device cover 354 covers the left surface of the third support plate 352. The third support plate 352 has four through holes 352a that align with the four threaded holes 296 of the left device mounting portion 290. The third device cover 354 also has four through holes 354a that align with the four threaded holes 296 of the left device mounting portion 290. By inserting four screws 307 through the four through holes 354a of the third appliance cover 354 and the four through holes 352a of the third support plate 352, respectively, and fastening them to the four threaded holes 296 of the left appliance mounting portion 290, the third support plate 352 and the third appliance cover 354 are respectively mounted on the left appliance mounting portion 290. Additionally, a cable support piece 360 ​​and a connector support piece 362 are formed on the left surface of the third support plate 352. The cable support piece 360 ​​supports the communication cable 356. The connector support piece 362 supports the communication connector 358. The communication cable 356 extends in the front-rear direction, penetrating the front wall of the third appliance cover 354. One end of the communication cable 356 is electrically connected to an external device located outside the motor unit 2. The other end of the communication cable 356 is connected to the control circuit board 154 (see reference 154) via the communication connector 358. Figure 15 Electrical connection. External devices input specific information to the control circuit board 154 via communication cable 356 and communication connector 358. The control circuit board 154 automatically (i.e., without user intervention) controls the electric motor 134 (see reference) based on the information input from the external device. Figure 15 The output of ). For example, in work unit 500 is high-pressure washer 500c (refer to Figure 3 In the case of water pressure detection, the working unit 500 is equipped with a water pressure sensor 566 (see reference). Figure 3 In this case, the water pressure sensor 566 can be used as an external device to input a motor control signal based on the water pressure detected by the water pressure sensor 566 to the control circuit board 154. Moreover, the control circuit board 154 can drive the electric motor 134 when the water pressure detected by the water pressure sensor 566 is less than a predetermined value, and stop the electric motor 134 when the water pressure detected by the water pressure sensor 566 is above the predetermined value.

[0117] As described above, the motor unit 2 selectively includes one of a variety of input devices. The input device included in the motor unit 2 is selected, for example, for the convenience of the user using the work unit 500. Figure 24 The first input device 298 shown is suitable for situations where the motor unit 2 is positioned in a location easily accessible to the user's hand, for example, when the motor unit 2 is mounted on a flat compactor 500b (see reference). Figure 2 In addition, [this is the situation]. Figure 25 The second input device 312 shown is suitable for housings in which the motor unit 2 is located in a position difficult for the user's hands to reach, for example, the motor unit 2 is mounted on a mobile brush cutter 500a (see reference). Figure 1 In addition, [this is the situation]. Figure 28 The third input device 350 shown is suitable for controlling the output of the electric motor 134 based on information generated by an external device, for example, when the motor unit 2 is installed in a high-pressure washer 500c (see reference). Figure 3 (The situation is as follows.)

[0118] Figure 22 The shape of the right-side appliance mounting part 246 shown is... Figure 24 The shape of the left-side appliance mounting section 290 shown is approximately the same. Therefore, Figure 22 The first covering device 254 shown (or Figure 23 The second covering device 268 shown can be installed not only on the right-side device mounting section 246, but also on the left-side device mounting section 290. Similarly, Figure 24 The first input device 298 shown (or Figure 25 The second input device 312 shown Figure 28 The third input device 350 shown can be installed not only on the left device mounting section 290, but also on the right device mounting section 246. Therefore, the positions of the first covering device 254 (or the second covering device 268) and the first input device 298 (or the second input device 312, the third input device 350) can be interchanged. Furthermore, the first internal vent 166 of the controller cover 142 (see...) Figure 16 It can also be formed on the controller cover body 162 (see reference) opposite to the first air inlet 262 (or second air inlet 284) of the first cover 254 (or second cover 268) installed on the left appliance mounting part 290. Figure 16 The left wall of ).

[0119] Figure 22 The first covering device 254 shown is capable of... Figure 22 The posture shown, from Figure 22 The posture shown has been rotated 90 degrees about a rotation axis extending in the left-right direction. Figure 22 The posture shown has been rotated 180 degrees about a rotation axis extending in the left-right direction. Figure 22 The four postures shown are rotated 270 degrees about a rotation axis extending in the left-right direction. Any one of these four postures is selectively installed on the right-side appliance mounting section 246. The first covering appliance 254 is installed on the left-side appliance mounting section 290 (see reference). Figure 24 The same applies to the case where the first covering device 254 can be selected from four postures.

[0120] Figure 23 The second covering device 268 shown is capable of... Figure 23 The posture shown, from Figure 23 The posture shown has been rotated 90 degrees about a rotation axis extending in the left-right direction. Figure 23 The posture shown has been rotated 180 degrees about a rotation axis extending in the left-right direction. Figure 23 The four postures shown are rotated 270 degrees around a rotation axis extending in the left-right direction. Any one of these four postures is selectively installed on the right-side appliance mounting section 246. The second covering appliance 268 is installed on the left-side appliance mounting section 290 (see reference). Figure 24 The same applies to the case where the second covering device 268 can be selected from four positions.

[0121] Figure 24 The first input device 298 shown is capable of... Figure 24 The posture shown, from Figure 24 The posture shown has been rotated 90 degrees about a rotation axis extending in the left-right direction. Figure 24 The posture shown has been rotated 180 degrees about a rotation axis extending in the left-right direction. Figure 24 The four postures shown are rotated 270 degrees around a rotation axis extending in the left-right direction. Any one of these four postures is selectively installed on the left-side appliance mounting section 290. The first input appliance 298 is installed on the right-side appliance mounting section 246 (see reference). Figure 22 The same applies to the case where the first input device 298 can be selected from four poses.

[0122] Figure 25 The second input device 312 shown is capable of... Figure 25 The posture shown, from Figure 25 The posture shown has been rotated 90 degrees about a rotation axis extending in the left-right direction. Figure 25 The posture shown has been rotated 180 degrees about a rotation axis extending in the left-right direction. Figure 25 The four postures shown are rotated 270 degrees around a rotation axis extending in the left-right direction. Any one of these four postures is selectively installed on the left-side appliance mounting section 290. The second input appliance 312 is installed on the right-side appliance mounting section 246 (see reference). Figure 22 The same applies to the case where the second input device 312 can be selected from four postures.

[0123] Figure 28 The third input device 350 shown is capable of... Figure 28 The posture shown, from Figure 28 The posture shown has been rotated 90 degrees about a rotation axis extending in the left-right direction. Figure 28 The posture shown has been rotated 180 degrees about a rotation axis extending in the left-right direction. Figure 28 The four postures shown are rotated 270 degrees around a rotation axis extending in the left-right direction. Any one of these four postures is selectively mounted on the left-side appliance mounting section 290. The third input appliance 350 is mounted on the right-side appliance mounting section 246 (see reference). Figure 22 The same applies to the case where the third input device 350 can be selected from four poses.

[0124] like Figure 29 As shown, the mounting base 144 has two interchangeable holes 364, two front auxiliary holes 366, and two rear auxiliary holes 368 on its lower mounting surface 188. The two interchangeable holes 364, the two front auxiliary holes 366, and the two rear auxiliary holes 368 are threaded holes defined by six threaded bosses 184. The two interchangeable holes 364 are arranged in the left-right direction. For interchangeability with the GX35 sold by Honda R&D Co., Ltd., the two interchangeable holes 364 have a nominal diameter of 5 mm, a distance of 50 mm between their respective center axes, and a distance of 45 mm in the front-rear direction from the front mounting surface 182 to their respective center axes (i.e., the distance between the front mounting surface 182 and the second imaginary plane P2). Furthermore, the two front auxiliary holes 366 and the two rear auxiliary holes 368 have a nominal diameter larger than the nominal diameter of the two interchangeable holes 364 (i.e., 5 mm) (e.g., a nominal diameter of 6 mm). The two front auxiliary holes 366 and the two rear auxiliary holes 368 have the same nominal diameter. The two front auxiliary holes 366 are arranged in a left-right direction, positioned forward of the two interchangeable holes 364. The distance between the central axes of the two front auxiliary holes 366 is greater than the distance between the central axes of the two interchangeable holes 364 (i.e., 50 mm). The distance between the central axes of the two front auxiliary holes 366 is, for example, 60 mm. Similarly, the two rear auxiliary holes 368 are arranged in a left-right direction, positioned rear of the two interchangeable holes 364. The distance between the central axes of the two rear auxiliary holes 368 is the same as the distance between the central axes of the two front auxiliary holes 366. The distance between the central axes of the two rear auxiliary holes 368 is, for example, 60 mm.

[0125] exist Figure 29 A first imaginary plane P1 is defined, which bisects the front end (i.e., the front mounting surface 182) and the rear end (i.e., the rear surface of the housing 12) of the motor unit body 4 in the front-rear direction. Two front auxiliary holes 366 are located forward of the first imaginary plane P1. Two rear auxiliary holes 368 are located rearward of the first imaginary plane P1. Furthermore, in... Figure 29The design defines a second imaginary plane P2 passing through the central axes of the two interchangeable holes 364, a third imaginary plane P3 passing through the central axes of the two front auxiliary holes 366, and a fourth imaginary plane P4 passing through the central axes of the two rear auxiliary holes 368. The distance between the second imaginary plane P2 and the fourth imaginary plane P4 is greater than the distance between the second imaginary plane P2 and the third imaginary plane P3. The distance between the second imaginary plane P2 and the fourth imaginary plane P4 is in the range of 55 mm to 155 mm, for example, 59 mm. The distance between the second imaginary plane P2 and the third imaginary plane P3 is in the range of 10 mm to 38 mm, for example, 21 mm.

[0126] like Figure 1 As shown, motor unit 2 can be connected via two interchange holes 364 (see reference). Figure 29 It is installed in the work unit 500 in the same manner as the GX35. Figure 1 In the example shown, the working unit 500 is a mobile brush cutter 500a. The motor unit 2 is mounted to the mobile brush cutter 500a via a connecting fitting 528. The mobile brush cutter 500a includes a brush cutter body 502 and a back frame 504. The brush cutter body 502 includes a connecting unit 506, a flexible shaft 508, a rod 510, an operating unit 512, and a cutter blade 514. The connecting unit 506 is connected to the third rotary output section 196 (see reference). Figure 20 The drum (not shown) is connected to the drum housing 518, which houses the drum. The drum housing 518 connects to the motor unit 2 via four threaded holes 182a (see reference). Figure 20 Four screws (not shown) are fastened to the front mounting surface 182 of the motor unit 2. A flexible shaft 508 extends between the connecting unit 506 and the operating unit 512. A rod 510 extends between the operating unit 512 and the cutter 514. The electric motor 134 of the motor unit 2 (see reference...) Figure 15 When driven, the power of the electric motor 134 is transmitted to the drum via the third rotary output unit 196, causing the drum to rotate. The rotation of the drum is transmitted to the cutter 514 via the flexible shaft 508 and a transmission shaft (not shown) housed inside the rod 510. The mobile brush cutter 500a can use the rotating cutter 514 to cut grass and trees. In addition, the operating unit 512 has a handle 520 for the user to hold and a second lever 342 that can be operated by the fingers of the hand holding the handle 520. As described above, the motor unit 2 installed in the mobile brush cutter 500a has a second input device 312 (see reference). Figure 25 , Figure 26 , Figure 27The second lever 342 is connected to the base end of the wire 322 provided by the second input device 312. The user can adjust the output of the electric motor 134 by pulling the wire 322 in using the second lever 342. In addition, the back frame 504 includes a shoulder strap 522 that hangs on the user's shoulder, a back panel 524 disposed along the user's back, and a frame 526 fixed to the back panel 524. The frame 526 supports the motor unit 2 by means of a connector 528 mounted on the motor unit 2.

[0127] like Figure 30 As shown, the connector 528 includes a plate member 530 fixed to the motor unit 2 and a rotating pin 532 rotatably mounted on the plate member 530. The plate member 530 includes a base plate portion 534 extending in the front-rear and left-right directions, a front plate portion 536 extending upward from the front end of the base plate portion 534, an upper plate portion 538 extending rearward from the upper end of the front plate portion 536, and a rear plate portion 540 extending upward from the rear end of the base plate portion 534. The rotating pin 532 is disposed in the center of the base plate portion 534. The upper plate portion 538 abuts against the lower mounting surface 188 of the mounting base 144. The upper plate portion 538 defines two interchange holes 364 disposed on the lower mounting surface 188 (see reference). Figure 29 Two through holes 538a are provided opposite to the two screws 542. The upper plate portion 538 is fixed to the lower mounting surface 188 by passing two screws 542 through the two through holes 538a and tightening them into the two interchangeable holes 364. The base plate portion 534 is provided with two through holes 534a through which a screwdriver (not shown) for tightening the two screws 542 can pass. Additionally, the rear plate portion 540 abuts against the lower rear wall 54 of the housing 12. The rear plate portion 540 is provided with two threaded holes 54a (see reference 1) that are corresponding to the two threaded holes 54a defined in the lower rear wall 54. Figure 9 Two through holes 540a are opposite each other. The rear plate portion 540 is fixed to the rear surface of the housing 12 by inserting two screws 544 through the two through holes 540a and tightening them into the two threaded holes 54a. Additionally, a rotating pin 532 is fixed to the frame 526 of the back frame 504 (see reference). Figure 1 Therefore, the motor unit 2 is rotatably mounted on the back frame 504 by means of the connector 528.

[0128] like Figure 2 , Figure 3 As shown, motor unit 2 can also be connected via two front auxiliary holes 366 (see reference). Figure 29 ) and two rear auxiliary holes 368 (refer to) Figure 29The motor unit 2 is mounted in the work unit 500 in a different configuration than the GX35. In this case, compared to the case where the motor unit 2 is mounted in the work unit 500 via two interchangeable holes 364 (i.e., the motor unit 2 is mounted in the work unit 500 in the same configuration as the GX35), the motor unit 2 is more securely mounted in the work unit 500. This is because, compared to the case where the motor unit 2 is mounted in the work unit 500 via two interchangeable holes 364, the number of screws used to fasten the motor unit 2 to the work unit 500 is increased. This is also because, compared to the case where the motor unit 2 is mounted in the work unit 500 via two interchangeable holes 364, the nominal diameter of the screws used to fasten the motor unit 2 to the work unit 500 is larger.

[0129] exist Figure 2 In the example shown, the working unit 500 is a plate compactor 500b. The plate compactor 500b includes a pulley 546, a housing 548, a handle 550, and a full-floor unit 552. The housing 548 includes a belt cover 554 that covers the belt (not shown) wound around the pulley 546, and a first mounting platform 556 that abuts against the lower mounting surface 188 of the motor unit 2. The first mounting platform 556 is connected to the motor unit 2 via two front auxiliary holes 366 (see reference). Figure 29 ) and two rear auxiliary holes 368 (refer to) Figure 29 Four corresponding screws (not shown) are fastened to the lower mounting surface 188 of the motor unit 2. The pulley 546 is housed in the housing 548 and is connected to the second rotation output section 194 of the motor unit 2 (see reference). Figure 19 ) connection. In motor unit 2, electric motor 134 (refer to...) Figure 15 When driven, the power of the electric motor 134 is transmitted to the pulley 546 via the second rotary output unit 194, causing the pulley 546 to rotate. As the pulley 546 rotates, a vibration mechanism (e.g., an eccentric hammer) mounted on the floor 552 actuates, causing the floor 552 to vibrate up and down. The plate compactor 500b vibrates the floor 552 up and down, repeatedly pressing the floor 552 onto the ground, thereby reinforcing the ground. As described above, the motor unit 2 mounted on the plate compactor 500b includes a first input device 298. The user can adjust the output of the electric motor 134 by operating the first lever 306 provided on the first input device 298.

[0130] exist Figure 3 In the example shown, the working unit 500 is a high-pressure washer 500c. The high-pressure washer 500c includes a second rotary output section 194 connected to the motor unit 2 (see reference). Figure 19 The pump 558 and the trolley 560 that mount the pump 558 and the motor unit 2 are connected. The pump 558 has a second mounting platform 562 that abuts against the front mounting surface 182 of the motor unit 2. The second mounting platform 562 is connected to the motor unit 2 by means of four threaded holes 182a (see reference). Figure 19 The four screws (not shown) are fastened to the front mounting surface 182 of the motor unit 2. Additionally, the trolley 560 has a third mounting platform 564 that abuts against the lower mounting surface 188 of the motor unit 2. The third mounting platform 564 is secured to the motor unit 2 via two front auxiliary holes 366 (see reference). Figure 29 ) and two rear auxiliary holes 368 (refer to) Figure 29 Four corresponding screws (not shown) are fastened to the lower mounting surface 188 of the motor unit 2. Additionally, the pump 558 is connected to a water supply hose (not shown) connected to a water source (e.g., a tap water pipe) and a drain hose (not shown) with a jet nozzle at its front end. The electric motor 134 of the motor unit 2 (see reference...) Figure 15 When activated, pump 558 is driven to pressurize and deliver water supplied from the supply hose toward the drain hose. This causes water to be sprayed from the spray nozzle. The high-pressure washer 500c can use the water sprayed from the nozzle to clean objects (e.g., automobiles). Additionally, pump 558 is equipped with a water pressure sensor 566 that detects the water pressure inside pump 558 or the drain hose. As described above, motor unit 2 installed in high-pressure washer 500c has a third input device 350. The water pressure sensor 566 is connected to the control circuit board 154 of motor unit 2 (see reference 350) via a communication cable 356 provided in the third input device 350. Figure 15 Electrical connection. The control circuit board 154 automatically controls the output of the electric motor 134 based on the water pressure detected by the water pressure sensor 566.

[0131] like Figure 31 As shown, the motor unit 2 also has a cover for the exposed opening 76 on the lower side (see reference). Figure 9 ) and lower mounting surface 188 (refer to) Figure 9 The base cover 370. The base cover 370 is connected to two interchange holes 364 (see reference). Figure 29 The two screws 372 corresponding to the motor unit 2 are installed on the mounting base 144. When the lower mounting surface 188 is not used when mounting the motor unit 2 relative to the working unit 500, the lower exposed opening 76 and the lower mounting surface 188 are covered by the bottom cover 370 by mounting the bottom cover 370 on the mounting base 144. This prevents foreign objects such as dust from entering the interior of the housing 12 through the lower exposed opening 76. Furthermore, it prevents foreign objects such as dust from entering the two interchange holes 364, the two front auxiliary holes 366, and the two rear auxiliary holes 368 defined on the lower mounting surface 188 (see reference). Figure 29 (The situation is as follows.)

[0132] like Figure 32As shown, the motor unit 2 can be mounted on the work unit 500 in a basic position with an upward orientation. The basic position, as referred to here, is the position of the work unit 500 when the user uses it for work. The basic position can be the position of the work unit 500 when it is placed on the ground or similar surface, or the position when the user moves the work unit 500. Furthermore, the upward orientation refers to a position where the direction along the rotation axis RX of the rotation output section 6 from the motor unit 2 toward the work unit 500 (i.e., the forward direction of the motor unit 2) is vertically upward.

[0133] like Figure 32 As shown, with the motor unit 2 in an upward orientation, the battery pack BP (or power adapter 94) is positioned relative to the battery mounting section 16 (see reference). Figure 12 The sliding direction (i.e., the leftward direction of motor unit 2) is along the horizontal plane. Furthermore, the shaft 58 defining the rotation axis of battery cover 14 is arranged in the vertical direction. Therefore, the opening and closing direction of battery cover 14 is along the horizontal plane. Additionally, the length direction of motor unit body 4 (i.e., the vertical direction of motor unit 2) is along the horizontal plane. Furthermore, the vertical dimension of motor unit body 4 (i.e., the aforementioned front-to-back dimension of motor unit body 4) is 200 mm or less.

[0134] exist Figure 32 In the example shown, openings 78a and 78b are provided on the rear side of the housing 12, where a power button 72 and a display 74 are located. Therefore, the power button 72 and the display 74 are positioned on the vertically downward-facing surface of the motor unit 2. This positions the power button 72 and the display 74 in a location easily accessible from the user's perspective in the vertical direction of the motor unit 2. Furthermore, in Figure 32 In the example shown, a second input device 312 is installed in the left-side device mounting section 290. The second input device 312 is installed in the left-side device mounting section 290 with the tube 320 and the line 322 extending vertically downward from the second device cover 316. As a result, it is easy for a user in the vertically downward direction of the motor unit 2 to pull the line 322.

[0135] Furthermore, the motor unit 2 is not limited to an upward orientation and can be installed in various orientations within the basic orientation of the work unit 500. In other words, the motor unit 2 can be installed in the work unit 500 regardless of the angle of 360 degrees formed between the forward direction and the vertical direction of the motor unit 2.

[0136] (Modified example)

[0137] It can also be like Figure 33As shown, a notch 402 is formed at the rear end of the motor shaft 146 for the front end of the flathead screwdriver 710 to engage. Alternatively, a tool opening 404 may be formed on the rear wall of the housing 12 for the flathead screwdriver 710 to pass through in the front-rear direction. The user can also lock the rotation of the motor shaft 146 by passing the flathead screwdriver 710 through the tool opening 404 and engaging the front end of the flathead screwdriver 710 with the notch 402. The tool opening 404 and the notch 402 can also function as a shaft locking mechanism 214. Furthermore, to engage the front end of the flathead screwdriver 710 with the notch 402, a component located behind the motor shaft 146 (e.g., Figure 15 The control unit 140 shown can also be configured in other locations.

[0138] (Reference Figure 4 , Figure 5 The motor unit 2 may also have additional buttons in the openings 70a, 70b on the front side (or openings 78a, 78b on the rear side). The motor unit 2 may also have, for example, a button for switching the motor shaft 146 (see reference). Figure 15 (The button for switching the rotation direction)

[0139] (Reference Figure 18 , Figure 19 , Figure 20 The rotary output unit 6 can be prepared in multiple ways or only one way.

[0140] (Reference Figure 21 The shaft locking mechanism 214 can also be configured to lock the rotation of the motor shaft 146 without the use of tools such as a wrench 700. For example, the shaft locking mechanism 214 may also have a locking member that is movably supported on the housing 12, and the rotation of the motor shaft 146 can be locked by engaging the locking member with the two flat surfaces 204 of the motor shaft 146.

[0141] (Reference Figure 21 The two flat surfaces 204 can also be formed on components other than the motor shaft 146 (e.g., centrifugal fan 136). If the motor unit 2 is equipped with a reducer such as a bevel gear, the two flat surfaces 204 can also be formed on the reducer.

[0142] (Reference Figure 21 Alternatively, other engaging elements can be provided instead of the two flat surfaces 204. For example, a hole for pin engagement can also be provided as an engaging element. The rotation of the motor shaft 146 can also be locked by engaging the pin into this hole.

[0143] (Reference Figure 4The motor unit 2 may also have a cover 216 that is not removable. Alternatively, the cover 216 may be installed after the motor unit 2 is assembled by welding or the like, thereby irreversibly blocking the tool opening 208. Furthermore, the tool opening 208 may be located at a location other than the right wall of the protrusion 62 of the housing 12. For example, the tool opening 208 may be located at the connection between the right wall and the upper wall of the protrusion 62. Additionally, the direction in which the wrench 700 enters and exits the tool opening 208 may be any direction other than left and right (for example, the direction in which the wrench 700 enters and exits the tool opening 208 may be up and down, front and back, from the upper right to the lower left, or from the lower left to the upper right).

[0144] (Reference Figure 15 The first spindle 200 can also be fixed to the motor shaft 146 in a manner other than threading the external thread 146a and the internal thread 200a together. For example, a key can be formed on the motor shaft 146, and a keyway that engages with the key can be formed on the first spindle 200. Furthermore, the first spindle 200 can be fixed to the motor shaft 146 by engaging the key and the keyway. This is also true for fixing the second spindle 222 to the motor shaft 146 and fixing the drive member 228 to the motor shaft 146. In another example, the first spindle 200 (or the second spindle 222, drive member 228) can also be fixed to a reducer (e.g., a planetary gear mechanism) connected to the motor shaft 146.

[0145] (Reference Figure 12 , Figure 13 The through-hole 120 may also be formed on a wall portion of the housing 12 other than the upper left wall 44. For example, the through-hole 120 may also be formed on the upper rear wall 46 of the housing 12. In this example, the directions of the power cable 110 and the power connector 112 through the through-hole 120 may also be parallel to the axis of rotation RX. In yet another example, the through-hole 120 may also be formed on the battery cover 14.

[0146] (Reference Figure 13 Motor unit 2 may also lack the first sealing member 122 and the second sealing member 132 (see reference). Figure 32At least one of the following. For example, the motor unit 2 may not have the first sealing member 122. In this example, the second sealing member 132 may also be installed in the through hole 120. When the power adapter 94 is installed in the battery mounting part 16, the second sealing member 132 may be removed from the through hole 120 in order to allow the power cable 110 to pass through the through hole 120. Therefore, the through hole 120 through which the power cable 110 passes may not be sealed. In another example, the motor unit 2 may not have the second sealing member 132. In this example, the first sealing member 122 may also be installed in the through hole 120. As long as the power adapter 94 is installed in the battery mounting part 16, the through hole 120 may also be sealed by the power cable 110 passing through the fitting hole 126 of the first sealing member 122.

[0147] (Reference Figure 4 , Figure 5 The battery cover 14 can also be opened and closed by sliding relative to the housing 12 instead of by rotating relative to the housing 12. Alternatively, the battery cover 14 can be detachably mounted to the housing 12. Furthermore, the motor unit 2 may not include the battery cover 14.

[0148] (Reference Figure 4 , Figure 9 Motor unit 2 may also lack either the front mounting surface 182 or the lower mounting surface 188.

[0149] (Reference Figure 22 , Figure 23 You may prepare a limited number of coverings or just one type.

[0150] (Reference Figure 24 , Figure 25 , Figure 28The first input device 298 (or the second input device 312, the third input device 350) can also input information other than information for controlling the output of the electric motor 134 to the control circuit board 154. The first input device 298 (or the second input device 312, the third input device 350) can also input information for switching the on / off state of predetermined functions of the motor unit 2 to the control circuit board 154. For example, information for switching the on / off state of the soft-load function of the motor unit 2 can also be input to the control circuit board 154. The soft-load function, as referred to here, means that even when the electric motor 134 is in a driving state, the output of the electric motor 134 is automatically reduced when the load applied to the electric motor 134 is low (e.g., when the work performed by the work unit 500 is interrupted). By activating the soft-load function, it is possible to suppress the motor shaft 146 from rotating at a higher speed than required, thereby reducing noise and vibration generated in the work unit 500.

[0151] (Reference Figure 24 , Figure 25 , Figure 28 You may prepare a limited number of input devices, or you may prepare only one type.

[0152] (Reference Figure 22 , Figure 24 The covering device can be installed only on the right-side device mounting section 246. Similarly, the input device can be installed only on the left-side device mounting section 290. That is, the positions of the covering device and the input device cannot be interchanged.

[0153] (Reference Figure 22 , Figure 24 The mounting posture of the covering device (or input device) relative to the right-side device mounting section 246 can also be only one posture. Similarly, the mounting posture of the covering device (or input device) relative to the left-side device mounting section 290 can also be only one posture.

[0154] (Reference Figure 29Alternatively, the two front auxiliary holes 366 and the two rear auxiliary holes 368 may be positioned further forward than the first imaginary plane P1. Furthermore, the distance between the second imaginary plane P2 and the fourth imaginary plane P4 may be smaller than the distance between the second imaginary plane P2 and the third imaginary plane P3. The distance between the central axes of the two front auxiliary holes 366 may also be smaller than the distance between the central axes of the two interchangeable holes 364 (i.e., 50 mm). Similarly, the distance between the central axes of the two rear auxiliary holes 368 may also be smaller than the distance between the central axes of the two interchangeable holes 364 (i.e., 50 mm). Additionally, the distance between the central axes of the two front auxiliary holes 366 and the distance between the central axes of the two rear auxiliary holes 368 may not be the same value.

[0155] (Reference Figure 32 When the motor unit 2 is in an upward orientation, the direction in which the battery pack BP (or power adapter 94) slides relative to the battery mounting portion 16 may not be along the horizontal plane. For example, the direction in which the battery pack BP (or power adapter 94) slides relative to the battery mounting portion 16 may be in the vertical direction. Furthermore, when the motor unit 2 is in an upward orientation, the direction in which the battery cover 14 opens and closes may not be along the horizontal plane. For example, the direction in which the battery cover 14 opens and closes may be along a plane parallel to the vertical direction. Additionally, when the motor unit 2 is in an upward orientation, the length direction of the motor unit body 4 may not be along the horizontal plane. For example, the length direction of the motor unit body 4 may be in the vertical direction. Furthermore, when the motor unit 2 is in an upward orientation, the vertical dimension of the motor unit body 4 (i.e., the aforementioned front-to-back dimension of the motor unit body 4) may be greater than 200 mm.

[0156] (Reference Figure 32 The exhaust port 172 can also be located in a location other than the neck 10. For example, the exhaust port 172 can also be located in the head 8 (i.e., the second part 38 of the outer casing 12).

[0157] (Features of the embodiment)

[0158] In one or more embodiments, the motor unit 2 is detachably mounted on the work unit 500 to operate the work unit 500. The motor unit 2 includes: an electric motor 134; a housing 12 (an example of a housing) supporting the electric motor 134; a rotation output section 6 that outputs power from the electric motor 134 to the work unit 500 by rotation; and a battery mounting section 16 disposed on the housing 12, on which a battery pack BP is detachably mounted. A power adapter 94 can be mounted on the battery mounting section 16 instead of the battery pack BP. The power adapter 94 is connected to a power source via a power cable 110 (an example of a cable) and a power connector 112 (an example of a connector) to supply power to the electric motor 134. The housing 12 has through holes 120 through which the power cable 110 and the power connector 112 pass.

[0159] According to the above structure, by passing the power supply cable 110 through the through hole 120 provided in the housing 12, the power supply cable 110 can be held in the housing 12. This suppresses movement of the power supply cable 110 relative to the housing 12, thus preventing accidental contact between the power supply cable 110 and / or the power connector 112 and objects outside the motor unit 2. This optimizes the processing of the motor unit 2.

[0160] In one or more embodiments, the housing 12 has opposing walls (i.e., upper front wall 42, upper left wall 44, and upper rear wall 46) opposite to the battery pack BP or power adapter 94 mounted on the battery mounting portion 16. A through hole 120 is disposed on the opposing wall.

[0161] According to the above structure, the battery pack BP or power adapter 94 installed in the battery mounting section 16 can be protected from contamination by water or dust from the outside by the opposing wall. Furthermore, according to the above structure, a through hole 120 for holding the power cable 110 is provided on the opposing wall near the power adapter 94. Thus, the root of the power cable 110 (i.e., the portion near the power adapter 94) is held in the housing 12. Therefore, the tip of the power cable 110 (i.e., the portion where the power connector 112 is located) can move relatively freely, thus allowing the power connector 112 to be positioned as desired.

[0162] In one or more embodiments, the power adapter 94 is mounted to the battery mounting portion 16 by sliding to the left (an example of a predetermined first direction) relative to the battery mounting portion 16. The opposing wall has an upper left wall 44 (an example of a first wall portion) located in the left direction when viewed from the power adapter 94 mounted on the battery mounting portion 16. A through hole 120 is disposed on the upper left wall 44.

[0163] Based on the above structure, the direction in which the power cable 110 and power connector 112 pass through the through hole 120 is approximately the same as the direction in which the power adapter 94 is installed in the battery mounting section 16. Therefore, the user can install the power adapter 94 in the battery mounting section 16 simultaneously with passing the power cable 110 and power connector 112 through the through hole 120. In other words, the user can smoothly perform the operations of passing the power cable 110 and power connector 112 through the through hole 120 and installing the power adapter 94 in the battery mounting section 16. This reduces the time required for passing the power cable 110 and power connector 112 through the through hole 120 and for installing the power adapter 94 in the battery mounting section 16.

[0164] In one or more embodiments, the power supply cable 110 and the power supply connector 112 are respectively orthogonal to the direction of the through hole 120 (i.e., the left-right direction) and the direction of the rotation axis RX along the rotary output section 6 (i.e., the front-back direction).

[0165] Viewed from the motor unit 2, the working unit 500 is typically positioned along the rotation axis RX of the rotary output unit 6. Therefore, when the power supply cable 110 is positioned along the rotation axis RX of the rotary output unit 6, the power supply cable 110 and / or the power connector 112 may come into contact with the working unit 500. According to the above structure, the power supply cable 110 is held in the through hole 120 in a state approximately orthogonal to the direction along the rotation axis RX of the rotary output unit 6. This prevents the power supply cable 110 from being positioned along the rotation axis RX of the rotary output unit 6, thus preventing contact between the power supply cable 110 and / or the power connector 112 and the working unit 500.

[0166] In one or more embodiments, the motor unit 2 includes a first sealing member 122, which is installed in the through hole 120 through which the power supply cable 110 passes, and seals the through hole 120. The first sealing member 122 includes: a sealing member body 124 that fits into the through hole 120; a fitting hole 126 that passes through the sealing member body 124 and fits into the outer peripheral surface of the power supply cable 110; and a cutout 128 that extends from the end of the sealing member body 124 to the fitting hole 126.

[0167] According to the above structure, the through hole 120 through which the power supply cable 110 passes can be sealed using the first sealing member 122. This prevents foreign objects such as dust from entering the space where the power adapter 94 is located via the through hole 120. Furthermore, when fitting the fitting hole 126 to the outer peripheral surface of the power supply cable 110, if the top end of the power supply cable 110 (i.e., the portion where the power connector 112 is located) must pass through the fitting hole 126 each time, the operation becomes cumbersome. Regarding this, according to the above structure, even without the top end of the power supply cable 110 passing through the fitting hole 126, the fitting hole 126 can be fitted to the outer peripheral surface of the power supply cable 110 by passing the power supply cable 110 through the cut 128. This reduces the cumbersome operation of fitting the fitting hole 126 to the outer peripheral surface of the power supply cable 110.

[0168] In one or more embodiments, the motor unit 2 further includes a second sealing member 132, which is installed in a through hole 120 through which the power supply cable 110 does not pass, to seal the through hole 120. One of the first sealing member 122 and the second sealing member 132 may be selectively installed in the through hole 120.

[0169] Based on the above structure, in addition to the first sealing member 122 corresponding to the case where the power supply cable 110 passes through the through hole 120, a second sealing member 132 is also prepared for the case where the power supply cable 110 does not pass through the through hole 120. Therefore, when the power adapter 94 is installed on the battery mounting portion 16 and the power supply cable 110 passes through the through hole 120, the through hole 120 can be sealed by installing the first sealing member 122 in the through hole 120. On the other hand, when the power adapter 94 is not installed on the battery mounting portion 16 and the power supply cable 110 does not pass through the through hole 120, the through hole 120 can be sealed by installing the second sealing member 132 in the through hole 120.

[0170] In one or more embodiments, the motor unit 2 further includes a battery cover 14, which is movable relative to the housing 12 between a closed position covering the battery pack BP or power adapter 94 mounted on the battery mounting portion 16 and an open position not covering the battery pack BP or power adapter 94 mounted on the battery mounting portion 16.

[0171] According to the above structure, the battery cover 14 can protect the battery pack BP or power adapter 94 installed in the battery mounting section 16 from being contaminated by water or dust from the outside.

[0172] In one or more embodiments, the battery cover 14 is mounted on the housing 12 in a manner that allows it to rotate between a closed position and an open position.

[0173] In the above structure, when the power cable 110 extending from the power adapter 94 is free to move relative to the housing 12, the power cable 110 and / or the power connector 112 may come into contact with the battery cover 14, potentially hindering the opening and closing of the battery cover 14. According to the above structure, by allowing the power cable 110 to pass through the through hole 120 provided in the housing 12, the power cable 110 can be held in the housing 12. Therefore, movement of the power cable 110 relative to the housing 12 can be suppressed, thus preventing the power cable 110 and / or the power connector 112 from hindering the opening and closing of the battery cover 14.

[0174] In one or more embodiments, the motor unit 2 further includes a lower mounting surface 188 (example of the first side) parallel to the axial direction of the rotation axis RX of the rotation output unit 6 and a front mounting surface 182 (example of the second side) orthogonal to the axial direction of the rotation axis RX of the rotation output unit 6. The motor unit 2 is mounted on the work unit 500 such that at least one of the lower mounting surface 188 and the front mounting surface 182 abuts against the work unit 500.

[0175] According to the above structure, the motor unit 2 can be installed in the work unit 500 in multiple postures (for example, the posture in which the lower mounting surface 188 abuts against the work unit 500, and the posture in which the front mounting surface 182 abuts against the work unit 500).

[0176] In one or more embodiments, the electric work machine includes: a work unit 500; and a motor unit 2, which is detachably mounted on the work unit 500 to operate the work unit 500. The motor unit 2 includes: an electric motor 134; a housing 12 (an example of a housing) supporting the electric motor 134; a rotation output unit 6 that outputs power from the electric motor 134 to the work unit 500 by rotation; and a battery mounting unit 16 disposed on the housing 12, on which a battery pack BP is detachably mounted. A power adapter 94 can be mounted on the battery mounting unit 16 instead of the battery pack BP. The power adapter 94 is connected to a power source via a power cable 110 (an example of a cable) and a power connector 112 (an example of a connector) to supply power to the electric motor 134. The housing 12 has through holes 120 through which the power cable 110 and the power connector 112 pass.

[0177] According to the above structure, by passing the power supply cable 110 through the through hole 120 provided in the housing 12, the power supply cable 110 can be held in the housing 12. This suppresses movement of the power supply cable 110 relative to the housing 12, thus preventing accidental contact between the power supply cable 110 and / or the power connector 112 and objects outside the motor unit 2. This optimizes the operation of the electric work machine.

Claims

1. A motor unit detachably mounted to a working unit to cause the working unit to operate, wherein, This motor unit has: Electric motor; A housing that supports the electric motor; A rotary output unit that outputs power from the electric motor to the working unit by rotation; and A battery mounting section is provided in the housing, and a battery pack is mounted in a removable manner in the battery mounting section. A power adapter can be installed in the battery mounting section to replace the battery pack. This power adapter is connected to a power source via cables and connectors to supply power to the electric motor. The housing has through holes that allow the cable and the connector to pass through.

2. The motor unit according to claim 1, wherein, The housing has a opposing wall that is opposite to the battery pack or the power adapter mounted on the battery mounting portion. The through hole is disposed on the opposite wall.

3. The motor unit according to claim 2, wherein, The power adapter is mounted to the battery mounting portion by sliding relative to the battery mounting portion in a predetermined first direction. The opposing wall has a first wall portion located in the first direction when viewed from the power adapter mounted on the battery mounting portion. The through hole is disposed in the first wall portion.

4. The motor unit according to any one of claims 1 to 3, wherein, The direction of the cable and the connector through the through hole is approximately orthogonal to the direction along the rotation axis of the rotating output section.

5. The motor unit according to any one of claims 1 to 4, wherein, The motor unit includes a first sealing member, which is installed in the through hole through which the cable passes, and seals the through hole. The first sealing member comprises: The main body of the sealing component is fitted into the through hole; A fitting hole, which penetrates the main body of the sealing member and fits into the outer peripheral surface of the cable; and A cut that extends from the end of the sealing member body to the fitting hole.

6. The motor unit according to claim 5, wherein, The motor unit also includes a second sealing member, which is installed in the through hole through which the cable does not pass, to seal the through hole. One of the first sealing member and the second sealing member is selectively installed in the through hole.

7. The motor unit according to any one of claims 1 to 6, wherein, The motor unit also includes a battery cover that is movable relative to the housing between a closed position covering the battery pack or the power adapter mounted on the battery mounting portion and an open position not covering the battery pack or the power adapter mounted on the battery mounting portion.

8. The motor unit according to claim 7, wherein, The battery cover is mounted on the housing in a manner that allows it to rotate between the closed position and the open position.

9. The motor unit according to any one of claims 1 to 8, wherein, The motor unit includes: The first surface is parallel to the axial direction of the rotation axis of the rotary output section; and The second surface is orthogonal to the axial direction of the rotation axis of the rotary output section. The motor unit is mounted on the work unit in such a state that at least one of the first surface and the second surface abuts against the work unit.

10. An electric work machine comprising: a work unit; and a motor unit detachably mounted to the work unit to cause the work unit to operate, wherein... The motor unit includes: Electric motor; A housing that supports the electric motor; A rotary output unit that outputs power from the electric motor to the working unit by rotation; and A battery mounting section is provided in the housing, and a battery pack is mounted in a removable manner in the battery mounting section. A power adapter can be installed in the battery mounting section to replace the battery pack. The power adapter is connected to a power source via cables and connectors to supply power to the electric motor. The housing has through holes that allow the cable and the connector to pass through.

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