Motor unit

Abstract

The present invention provides a motor unit. The motor unit comprises: a motor having a motor shaft extending along a first direction; a control circuit substrate that causes the motor to operate; a motor housing that supports the motor; a main body housing that is arranged on the outside of the control circuit substrate and the motor housing; a first fixing portion that can be fixed to an operating unit; a first vibration-proof component and a second vibration-proof component that are arranged between the main body housing and the motor housing. The first fixing portion can be placed on a loading surface when the motor unit is placed on the loading surface. When the motor unit is placed on the loading surface, in the up-down direction orthogonal to the loading surface, at least a portion of the first vibration-proof component and at least a portion of the second vibration-proof component are arranged at a position lower than the upper end of the motor. When the motor unit is observed in the first direction, the motor is arranged between the first vibration-proof component and the second vibration-proof component.

Description

Technical Field

[0001] The technology disclosed in this specification relates to a motor unit. Background Art

[0002] A motor unit is disclosed in International Publication No. 2020 / 049617. The motor unit is mounted on the operating unit in a detachable manner and causes the operating unit to operate. The motor unit comprises: a motor having a motor shaft extending along a first direction and causing the operating unit to operate; a control circuit substrate causing the motor to operate; a motor housing supporting the motor; a main body housing arranged on the outside of the control circuit substrate and the motor housing; a first fixing portion capable of being fixed to the operating unit; a first vibration-proof component arranged between the main body housing and the motor housing; a second vibration-proof component arranged between the main body housing and the motor housing; and a third vibration-proof component arranged between the main body housing and the motor housing. The first fixing portion can be placed on a loading surface when the motor unit is placed on the loading surface, and is arranged to be substantially parallel to the motor shaft. Summary of the invention

[0003] In the above motor unit, the first vibration-isolating member, the second vibration-isolating member, and the third vibration-isolating member are arranged asymmetrically with respect to the motor. In this case, the vibration of the motor cannot be sufficiently damped.

[0004] In addition, in the motor unit, in order to cool the control circuit board, it is necessary to use other components in addition to the first vibration-proof component, the second vibration-proof component, and the third vibration-proof component to plan the flow path space, thereby increasing the number of components of the motor unit.

[0005] According to the present specification, an object is to provide at least one of a motor unit capable of sufficiently damping the vibration of a motor and a motor unit capable of damping the vibration of a motor while reducing the number of parts of the motor unit.

[0006] This specification discloses a motor unit. The motor unit is mounted on the operating unit in a detachable manner and causes the operating unit to operate. The motor unit includes: a motor having a motor shaft extending along a first direction and causing the operating unit to operate; a control circuit substrate causing the motor to operate; a motor housing supporting the motor; a main body housing arranged outside the control circuit substrate and the motor housing; a first fixing portion that can be fixed to the operating unit; a first vibration-proof component arranged between the main body housing and the motor housing; and a second vibration-proof component arranged between the main body housing and the motor housing. The first fixing portion can be placed on the loading surface when the motor unit is placed on the loading surface, and is arranged to be substantially parallel to the motor shaft. When the motor unit is placed on the loading surface, at least a portion of the first vibration-proof component and at least a portion of the second vibration-proof component are arranged at a position lower than the upper end of the motor in the up-down direction orthogonal to the loading surface. When the motor unit is viewed in the first direction, the motor is disposed between the first vibration isolation member and the second vibration isolation member.

[0007] According to the above configuration, at least a portion of the first vibration-proof component and at least a portion of the second vibration-proof component are arranged at a position lower than the upper end of the motor, and the first vibration-proof component and the second vibration-proof component are arranged to sandwich the motor. Thus, the first vibration-proof component and the second vibration-proof component are arranged symmetrically with respect to the motor. Accordingly, the vibration of the motor can be sufficiently attenuated.

[0008] In addition, the present specification discloses a motor unit. The motor unit is mounted on the operating unit in a detachable manner and causes the operating unit to operate. The motor unit includes: a motor having a motor shaft extending along a first direction and causing the operating unit to operate; a control circuit substrate causing the motor to operate; a motor housing supporting the motor; a main body housing arranged outside the control circuit substrate and the motor housing; a second fixing portion fixed to the operating unit; a first vibration-proof component arranged between the main body housing and the motor housing; and a second vibration-proof component arranged between the main body housing and the motor housing. The motor shaft is substantially orthogonal to the second fixing portion. When the motor unit is placed on a mounting surface, at least a portion of the first vibration-proof component and at least a portion of the second vibration-proof component are arranged at a position lower than the upper end of the motor in a vertical direction orthogonal to the mounting surface. When the motor unit is viewed in the first direction, the motor is arranged between the first vibration-proof component and the second vibration-proof component.

[0009] According to the above configuration, at least a portion of the first vibration-proof component and at least a portion of the second vibration-proof component are arranged at a position lower than the upper end of the motor, and the first vibration-proof component and the second vibration-proof component are arranged to sandwich the motor. Thus, the first vibration-proof component and the second vibration-proof component are arranged symmetrically with respect to the motor. Accordingly, the vibration of the motor can be sufficiently attenuated.

[0010] In addition, the present specification discloses a motor unit. The motor unit is mounted on the operating unit in a detachable manner and causes the operating unit to operate. The motor unit includes: a motor having a motor shaft extending along a first direction and causing the operating unit to operate; a control circuit substrate causing the motor to operate; a fan fixed to the motor; a motor housing supporting the motor; a substrate housing supporting the control circuit substrate; a main body housing arranged outside the motor housing and the substrate housing; a fixing unit fixed to the operating unit; and a cylindrical vibration-proof component arranged between the motor housing and the substrate housing and having a cylindrical shape. When the fan rotates, air cools the control circuit substrate and passes through the inside of the cylindrical vibration-proof component.

[0011] According to the above configuration, when the motor vibrates, the cylindrical vibration-proof component attenuates the vibration of the motor. In addition, air for cooling the control circuit substrate passes through the inside of the cylindrical vibration-proof component. By using the cylindrical vibration-proof component, the vibration of the motor can be suppressed by using one component, and the control circuit substrate can be cooled. Accordingly, the number of components of the motor unit can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the system 1 of the first embodiment.

[0013] Figure 2 It is a perspective view of the motor unit 10 and the tamping machine 4a according to the first embodiment.

[0014] Figure 3 It is a perspective view of the motor unit 10 and the plate compactor 4b according to the first embodiment.

[0015] Figure 4 It is a perspective view of the motor unit 10 and the battery pack BP according to the first embodiment.

[0016] Figure 5 This is a table showing the specifications of the motor unit 10, the main body case 12, the motor 86, and the battery pack BP according to the first embodiment.

[0017] Figure 6 It is a perspective view of the motor unit 10 and the battery pack BP according to the first embodiment.

[0018] Figure 7It is a perspective view of the vicinity of the first battery mounting portion 22 and the second battery mounting portion 24 in the motor unit 10 according to the first embodiment.

[0019] Figure 8 It is a cross-sectional view showing the vicinity of the first battery pack BP1 and the second battery pack BP2 in the motor unit 10 according to the first embodiment.

[0020] Fig. 9 This is a table showing the specifications of the motor 86 and the battery pack BP in the first embodiment.

[0021] Fig.10 It is a perspective view of the battery pack BP according to the first embodiment.

[0022] Fig.11 It is a cross-sectional view of the vicinity of the first battery mounting portion 22 and the first battery pack BP1 in the motor unit 10 of the first embodiment.

[0023] Fig.12 It is an exploded perspective view of the motor unit 10 according to the first embodiment.

[0024] Fig.13 It is a cross-sectional view of the motor unit 10 and the battery pack BP according to the first embodiment.

[0025] Fig.14 It is a perspective view of the motor housing 84 and the motor 86 according to the first embodiment.

[0026] Fig.15 It is a cross-sectional view of the vicinity of the air intake port 26 a in the motor unit 10 according to the first embodiment.

[0027] Fig.16 It is a cross-sectional view of the motor housing 84, the motor 86, and the fan 88 according to the first embodiment.

[0028] Fig.17 It is an exploded perspective view of the motor housing 84, the motor 86, and the plate member 92 according to the first embodiment.

[0029] Fig.18 This is an exploded perspective view of a state in which the main body housing 12 and the support unit 100 of the motor unit 10 according to the first embodiment are removed.

[0030] Fig.19 This is an exploded perspective view of a state in which the main body housing 12 and the support unit 100 of the motor unit 10 according to the first embodiment are removed.

[0031] Fig. 20 It is a right side view of the motor unit 10 according to the first embodiment in a state where the main body housing 12 and the support unit 100 are removed.

[0032] Fig.21 This is a left side view of the motor unit 10 according to the first embodiment in a state where the main body housing 12 and the support unit 100 are removed.

[0033] Fig. 22 It is a cross-sectional view of the motor unit 10 according to the first embodiment.

[0034] Fig.23 This is a front view of the motor unit 10 according to the first embodiment in a state where the main body housing 12 is removed.

[0035] Fig.24 This is an exploded perspective view of a state in which the main body housing 12 of the motor unit 10 according to the first embodiment is removed.

[0036] Fig.25 This is an exploded perspective view of a state in which the main body housing 12 of the motor unit 10 according to the first embodiment is removed.

[0037] Fig.26 It is a cross-sectional view of the vicinity of the control unit 102 in the motor unit 10 according to the first embodiment.

[0038] Fig. 27 It is a left side view of the motor unit 10 and the tamping machine 4a according to the first embodiment.

[0039] Fig.28 It is a front view of the motor housing 84, the motor 86, and the fixing unit 90 of the first embodiment.

[0040] Fig.29 It is a perspective view of the vicinity of the fixing stand 308 of the earth-rammer 4a according to the first embodiment.

[0041] Fig.30 It is an exploded perspective view of the motor unit 10 and the tamping machine 4a according to the first embodiment.

[0042] Fig.31 It is a left side view of the motor unit 10 and the plate compactor 4b according to the first embodiment.

[0043] Fig.32 It is an exploded perspective view of the first fixing portion 148 and the plate compactor 4b of the first embodiment.

[0044] Fig.33 It is a side view of the motor unit 10 and the slope mower 4c according to the first embodiment.

[0045] Fig.34 It is a perspective view of the motor unit 10 and the battery pack BP according to the second embodiment.

[0046] Fig.35 It is a perspective view of the motor unit 10 and the battery pack BP according to the third embodiment.

[0047] Fig.36 It is a right side view of the motor unit 10 according to the fourth embodiment in a state where the main body housing 12 and the support unit 100 are removed.

[0048] Fig.37 It is a right side view of the motor unit 10 according to the fifth embodiment in a state where the main body housing 12 and the support unit 100 are removed. DETAILED DESCRIPTION

[0049] Hereinafter, representative but non-limiting specific examples of the present invention will be described in detail with reference to the accompanying drawings. This detailed description is intended only to show the details of the preferred examples for implementing the present invention to those skilled in the art, and is not intended to limit the scope of the present invention. In addition, the additional features and inventions disclosed are intended to provide a further improved motor unit, which can be used alone or in conjunction with other features or inventions.

[0050] In addition, the combination of features or processes disclosed in the following detailed description is not necessary to practice the invention in the broadest sense, and in particular is only described for the purpose of illustrating representative specific examples of the invention. In addition, the individual features of the following representative specific examples and the individual features described in the claims do not necessarily have to be combined as described below, that is, as described in the specific examples described herein, or in the order listed, to provide additional and useful embodiments of the invention.

[0051] All features described in this specification and / or claims also have the following intention: in addition to the configuration of the features described in the embodiments and / or claims, they are intended to be disclosed individually and independently of each other as limitations for the disclosure at the time of the initial application and the specific matters described in the claims. In addition, all numerical ranges and groupings or group-related records have the following intention: as limitations for the disclosure at the time of the initial application and the specific matters described in the claims, the intention of disclosing their intermediate configurations.

[0052] The present specification discloses a motor unit. The motor unit is mounted on the working unit in a detachable manner and causes the working unit to operate. The motor unit includes: a motor having a motor shaft extending along a first direction and causing the working unit to operate; a control circuit substrate causing the motor to operate; a motor housing supporting the motor; a main body housing arranged outside the control circuit substrate and the motor housing; a first fixing portion that can be fixed to the working unit; a first vibration-proof component arranged between the main body housing and the motor housing; and a second vibration-proof component arranged between the main body housing and the motor housing. The first fixing portion can be placed on the placing surface when the motor unit is placed on the placing surface, and is arranged to be substantially parallel to the motor shaft. When the motor unit is placed on the placing surface, at least a portion of the first vibration-proof component and at least a portion of the second vibration-proof component are arranged at a position lower than the upper end of the motor in the up-down direction orthogonal to the placing surface. When the motor unit is viewed in the first direction, the motor is arranged between the first vibration-proof component and the second vibration-proof component.

[0053] In one or more embodiments, the motor shaft may extend along the mounting surface when the motor unit is mounted on the mounting surface. The first and second vibration-isolating members may be arranged below the central axis of the motor shaft when the motor unit is mounted on the mounting surface.

[0054] Generally, components of the motor unit are often arranged in a space above the upper end of the motor. According to the above configuration, an empty space below the central axis of the motor shaft can be utilized.

[0055] In one or more embodiments, when the motor unit is placed on the placement surface, the first vibration isolating member and the second vibration isolating member may be arranged upward from the lower end of the motor.

[0056] According to the above configuration, it is possible to utilize the empty space between the central axis of the motor shaft and the lower end of the motor.

[0057] In one or more embodiments, the first vibration isolating member may be spaced apart from an orthogonal plane that is orthogonal to the mounting surface and includes the first direction by a first distance. The second vibration isolating member may be spaced apart from the orthogonal plane by the first distance.

[0058] According to the above configuration, the distance between the first vibration-proof component and the orthogonal plane is the same as the distance between the second vibration-proof component and the orthogonal plane. Thus, the first vibration-proof component and the second vibration-proof component are arranged symmetrically with respect to the orthogonal plane. Thus, the vibration of the motor can be further attenuated.

[0059] In one or more embodiments, the position of the center of gravity of the motor unit in the first direction may be substantially the same as the center position of the first vibration isolating member in the first direction and the center position of the second vibration isolating member in the first direction.

[0060] According to the above configuration, the vibration of the motor can be further attenuated.

[0061] In one or more embodiments, the motor unit may further include: a third vibration-proof component disposed between the main body housing and the motor housing; and a fourth vibration-proof component disposed between the main body housing and the motor housing. At least a portion of the third vibration-proof component and at least a portion of the fourth vibration-proof component may also be disposed at a position more upward than the central axis of the motor shaft when the motor unit is placed on the mounting surface. The motor may also be disposed between the third vibration-proof component and the fourth vibration-proof component when the motor unit is viewed in the first direction.

[0062] According to the above configuration, compared with a configuration in which the motor unit includes only the first vibration isolation member and the second vibration isolation member, the vibration of the motor can be further attenuated.

[0063] In one or more embodiments, the third vibration-proof component may be arranged at a position on the same side as the first vibration-proof component with respect to an orthogonal plane that is orthogonal to the mounting surface and includes the first direction. The fourth vibration-proof component may be arranged at a position on the same side as the second vibration-proof component with respect to the orthogonal plane. The distance between the first vibration-proof component and the third vibration-proof component may be substantially the same as the distance between the second vibration-proof component and the fourth vibration-proof component.

[0064] According to the above configuration, the third vibration-isolating member and the fourth vibration-isolating member are arranged symmetrically with respect to the orthogonal plane. This can further attenuate the vibration of the motor.

[0065] In one or more embodiments, the motor unit may further include a plate member fixed to the motor housing. The first vibration isolation member and the second vibration isolation member may be fixed to the plate member and the main body housing.

[0066] In the configuration in which the first vibration-proofing member and the second vibration-proofing member are directly fixed to the motor housing, the configuration of the motor housing becomes complicated. According to the above configuration, it is possible to suppress the configuration of the motor housing from becoming complicated.

[0067] In one or more embodiments, the motor unit may further include a second fixing portion fixed to an operation unit of a different type from the operation unit fixed to the first fixing portion.

[0068] According to the above configuration, the types of working units that can use the motor unit can be increased.

[0069] In one or more embodiments, the motor unit may further include: a fan fixed to the motor; a substrate housing supporting the control circuit substrate; and a cylindrical vibration-proof component disposed between the motor housing and the substrate housing and having a cylindrical shape. When the fan rotates, air may also cool the control circuit substrate and pass through the inside of the cylindrical vibration-proof component.

[0070] According to the above configuration, when the motor vibrates, the cylindrical vibration-proof component attenuates the vibration of the motor. In addition, air for cooling the control circuit board passes through the inside of the cylindrical vibration-proof component. By using the cylindrical vibration-proof component, the vibration of the motor can be suppressed by using one component, and the control circuit board can also be cooled.

[0071] In one or more embodiments, the main body shell may also include: a first battery mounting portion, on which a first battery that supplies power to the motor is detachably mounted; and a second battery mounting portion, on which a second battery that supplies power to the motor is detachably mounted.

[0072] According to the above configuration, the output of the motor unit can be increased or the operating time of the motor unit can be prolonged.

[0073] In one or more embodiments, when the motor unit is viewed in the first direction, the control circuit board may at least partially overlap with the motor.

[0074] According to the above configuration, compared with a configuration in which the control circuit board does not at least partially overlap the motor when the motor unit is viewed in the first direction, it is possible to suppress the motor unit from increasing in size in a direction perpendicular to the first direction.

[0075] This specification discloses a motor unit. The motor unit is mounted on the working unit in a detachable manner and causes the working unit to operate. The motor unit includes: a motor having a motor shaft extending along a first direction and causing the working unit to operate; a control circuit substrate causing the motor to operate; a motor housing supporting the motor; a main body housing arranged outside the control circuit substrate and the motor housing; a second fixing portion fixed to the working unit; a first vibration-proof component arranged between the main body housing and the motor housing; and a second vibration-proof component arranged between the main body housing and the motor housing. The motor shaft is substantially orthogonal to the second fixing portion. When the motor unit is placed on a mounting surface, at least a portion of the first vibration-proof component and at least a portion of the second vibration-proof component are arranged at a position lower than the upper end of the motor in the up-down direction orthogonal to the mounting surface. When the motor unit is viewed in the first direction, the motor is arranged between the first vibration-proof component and the second vibration-proof component.

[0076] In one or more embodiments, the motor shaft may extend along the mounting surface when the motor unit is mounted on the mounting surface. The first and second vibration-isolating members may be arranged below the central axis of the motor shaft when the motor unit is mounted on the mounting surface.

[0077] Generally, components of the motor unit are often arranged in a space above the upper end of the motor. According to the above configuration, an empty space below the central axis of the motor shaft can be utilized.

[0078] In one or more embodiments, the first vibration isolating member may be spaced apart from an orthogonal plane that is orthogonal to the mounting surface and includes the first direction by a first distance. The second vibration isolating member may be spaced apart from the orthogonal plane by the first distance.

[0079] According to the above configuration, the distance between the first vibration-proof component and the orthogonal plane is the same as the distance between the second vibration-proof component and the orthogonal plane. Thus, the first vibration-proof component and the second vibration-proof component are arranged symmetrically with respect to the orthogonal plane. Thus, the vibration of the motor can be further attenuated.

[0080] In one or more embodiments, the main body shell may also include: a first battery mounting portion, on which a first battery that supplies power to the motor is detachably mounted; and a second battery mounting portion, on which a second battery that supplies power to the motor is detachably mounted.

[0081] According to the above configuration, the output of the motor unit can be increased or the operating time of the motor unit can be prolonged.

[0082] This specification discloses a motor unit. The motor unit is installed on the working unit in a detachable manner, and causes the working unit to operate. The motor unit includes: a motor having a motor shaft extending along a first direction and causing the working unit to operate; a control circuit substrate that causes the motor to operate; a fan fixed to the motor; a motor housing that supports the motor; a substrate housing that supports the control circuit substrate; a main body housing that is arranged on the outside of the motor housing and the substrate housing; a fixing unit that is fixed to the working unit; a first vibration-proof component that is arranged between the main body housing and the motor housing; and a cylindrical vibration-proof component that is arranged between the motor housing and the substrate housing and has a cylindrical shape. When the fan rotates, air cools the control circuit substrate and passes through the inside of the cylindrical vibration-proof component.

[0083] In one or more embodiments, the motor unit may further include a plate member fixed to the motor housing, a support unit that supports the substrate housing, and a vibration-proof member fixed to the plate member and the support unit.

[0084] According to the above configuration, the vibration of the motor is attenuated by the cylindrical vibration-proof member and the vibration-proof member, thereby preventing the vibration from being transmitted to the control circuit board.

[0085] In one or more embodiments, when the motor unit is viewed in the first direction, the cylindrical vibration-isolating member may at least partially overlap with the motor.

[0086] According to the above configuration, compared with a configuration in which the cylindrical vibration-isolating member does not at least partially overlap the motor when the motor unit is viewed in the first direction, it is possible to suppress the motor unit from increasing in size in a direction perpendicular to the first direction.

[0087] In one or more embodiments, the main body shell may also include: a first battery mounting portion, on which a first battery that supplies power to the motor is detachably mounted; and a second battery mounting portion, on which a second battery that supplies power to the motor is detachably mounted.

[0088] According to the above configuration, the output of the motor unit can be increased or the operating time of the motor unit can be prolonged.

[0089] (First embodiment)

[0090] like Figure 1As shown, the system 1 includes: a plurality of working units 4 and a motor unit 10. The motor unit 10 is a universal motor unit. The motor unit 10 is respectively installed in a detachable manner on the various working units 4. The motor unit 10 can also be replaced by installing the engine unit in the working unit 4 in a detachable manner. The engine unit is an interchangeable engine unit, for example, the engine unit of the GX120 sold by Honda R&D Co., Ltd. That is, the working unit 4 can be applied to both the motor unit 10 and the engine unit. The various working units 4 include, for example, a rammer 4a, a plate compactor 4b, a slope mower 4c, a trowel 4d, a concrete saw 4e, a reel mower 4f, an edger 4g, a dismantler 4h, a stump crusher 4i, a compressor 4j, a high-pressure cleaner 4k, a sprayer 4l, a sewage pump 4m, and a chemical sprayer 4n. In addition, the operation unit 4 is not limited to the above-mentioned operation unit 4, and may be an operation unit 4 other than the above-mentioned operation unit 4. For example, Figure 2 As shown in FIG. 1 , the motor unit 10 is detachably mounted on the tamping machine 4a. Figure 3 As shown in FIG. 1 , the motor unit 10 is detachably mounted on the plate compactor 4 b. Hereinafter, the configuration in which the motor unit 10 is mounted on the working unit 4 may be referred to as a working machine 2. The user uses the working machine 2 to perform work.

[0091] like Figure 4 As shown in FIG. 1 , the motor unit 10 is operated by the power of a plurality of (two in this embodiment) battery packs BP. Hereinafter, one battery pack BP is sometimes referred to as a first battery pack BP1, and the other battery pack BP is sometimes referred to as a second battery pack BP2. Fig.16 ) is referred to as the front-to-back direction, the direction perpendicular to the front-to-back direction is referred to as the left-right direction, and the direction perpendicular to the front-to-back direction and the left-right direction is referred to as the up-down direction. The front-to-back direction, the left-right direction, and the up-down direction are defined for the purpose of explaining the detailed structure of the motor unit 10. In the work machine 2 in which the motor unit 10 and the work unit 4 are combined, the front-to-back direction, the left-right direction, and the up-down direction of the work machine 2 are sometimes different from the front-to-back direction, the left-right direction, and the up-down direction of the motor unit 10.

[0092] like Figure 5As shown, in the motor unit 10 including a plurality of battery packs BP, the weight of the motor unit 10 is greater than 11.7 kg and less than 19 kg. The length of the motor unit 10 in the front-to-back direction is greater than 230 mm and less than 235 mm. In addition, the length in the front-to-back direction does not include the length of the motor shaft 140 exposed to the outside of the motor unit 10. The length of the motor unit 10 in the left-right direction is greater than 170 mm and less than 230 mm. The length of the motor unit 10 in the up-down direction is greater than 280 mm and less than 350 mm. The volume of the motor unit 10 is 9500 cm 3 Above and 13000cm 3 the following.

[0093] In the motor unit 10 that does not include a plurality of battery packs BP, the weight of the motor unit 10 is greater than 10.5 kg and less than 15 kg. The length of the motor unit 10 in the front-to-back direction is greater than 230 mm and less than 235 mm. In addition, the length in the front-to-back direction does not include the length of the motor shaft 140 exposed to the outside of the motor unit 10. The length of the motor unit 10 in the left-right direction is greater than 170 mm and less than 230 mm. The length of the motor unit 10 in the up-down direction is greater than 240 mm and less than 260 mm. The volume of the motor unit 10 is 8500 cm 3 Above and 10000cm 3 the following.

[0094] like Figure 4 as well as Figure 6 As shown in FIG. 1 , the motor unit 10 includes a main body housing 12. The main body housing 12 is made of, for example, a resin material. Figure 5 As shown, the weight of the main housing 12 is greater than 0.9 kg and less than 1.2 kg. The length of the main housing 12 in the front-to-back direction is greater than 220 mm and less than 225 mm. The length of the main housing 12 in the left-right direction is greater than 170 mm and less than 230 mm. The length of the main housing 12 in the up-down direction is greater than 220 mm and less than 240 mm. The volume of the main housing 12 is 8000 cm 3 Above and 9500cm 3 the following.

[0095] like Figure 4 as well as Figure 6 As shown, the main body housing 12 includes: a right main body housing 14 and a left main body housing 16. The right main body housing 14 divides the outer shape of the right half of the main body housing 12. The left main body housing 16 divides the outer shape of the left half of the main body housing 12. The right main body housing 14 and the left main body housing 16 are connected by screws 17 (see Fig.12) and is fixed. The right main body shell 14 and the left main body shell 16 each have a shape obtained by dividing the main body shell 12 in half using a plane including the front-back direction and the up-down direction. The boundary between the right main body shell 14 and the left main body shell 16 is located at the center position in the left-right direction of the main body shell 12. A storage space 18 is divided between the right main body shell 14 and the left main body shell 16 (refer to Fig.13 ).

[0096] The main body case 12 includes a storage portion 20, a first battery mounting portion 22, and a second battery mounting portion 24. The storage portion 20 has a storage space 18 (see Fig.13 The housing portion 20 has a first opening 26 and a second opening 28. The first opening 26 is disposed on the front wall 20a of the housing portion 20. The first opening 26 has a substantially circular cross-sectional shape. The first opening 26 connects the housing space 18 with the outside of the main housing 12. Figure 6 As shown, the second opening 28 is disposed on the lower wall 20 b of the housing portion 20 . The second opening 28 has a substantially rectangular cross-sectional shape. The second opening 28 connects the housing space 18 and the outside of the main body housing 12 .

[0097] like Figure 7 As shown, the upper wall 20c of the housing portion 20 includes: a base 32, a first truncated pyramid portion 34, and a second truncated pyramid portion 36. The first truncated pyramid portion 34 protrudes upward from the base 32. The first truncated pyramid portion 34 has a quadrangular pyramid shape. The upper surface 34a of the first truncated pyramid portion 34 is arranged at a position further upward than the upper surface 32a of the base 32. The upper surface 32a and the upper surface 34a are respectively orthogonal to the up-down direction.

[0098] The second truncated pyramid portion 36 protrudes upward from the base portion 32. The second truncated pyramid portion 36 is connected to the rear end of the first truncated pyramid portion 34.

[0099] The first battery mounting portion 22 and the second battery mounting portion 24 are arranged on the upper surface 34a of the first truncated pyramid portion 34. The first battery mounting portion 22 and the second battery mounting portion 24 are arranged side by side in the left-right direction. When the motor unit 10 is viewed in the up-down direction, the first battery mounting portion 22 and the second battery mounting portion 24 do not overlap.

[0100] The first battery mounting portion 22 includes a first right rail portion 40, a first left rail portion 42, and a first connecting portion 44. The first right rail portion 40 and the first left rail portion 42 extend in the front-rear direction. The first right rail portion 40 extends upward from the upper surface 34a of the first pyramid portion 34 and then bends to extend toward the left. The first left rail portion 42 extends upward from the upper surface 34a of the first pyramid portion 34 and then bends to extend toward the right. The first left rail portion 42 is opposite to the first right rail portion 40 in the left-right direction. The first connecting portion 44 connects the front end of the first right rail portion 40 and the front end of the first left rail portion 42.

[0101] The second battery mounting portion 24 includes a second right rail portion 48, a second left rail portion 50, and a second connecting portion 52. The second right rail portion 48 and the second left rail portion 50 extend in the front-rear direction. The second right rail portion 48 extends upward from the upper surface 34a of the first pyramid portion 34 and then bends to extend toward the left. The first left rail portion 42 and the second right rail portion 48 are formed integrally. The second left rail portion 50 extends upward from the upper surface 34a of the first pyramid portion 34 and then bends to extend toward the right. The second left rail portion 50 and the second right rail portion 48 are opposite to each other in the left-right direction. The second connecting portion 52 connects the front end of the second right rail portion 48 and the front end of the second left rail portion 50.

[0102] like Figure 8 As shown, the first battery pack BP1 is mounted on the first battery mounting portion 22. The second battery pack BP2 is mounted on the second battery mounting portion 24. In this embodiment, the configuration of the first battery pack BP1 is the same as that of the second battery pack BP2. Therefore, the following description will be made taking the first battery pack BP1 as an example.

[0103] The first battery pack BP1 includes a secondary battery capable of charge and discharge, such as a lithium-ion battery. Figure 5 As shown, the weight of the first battery pack BP1 is 0.6 kg or more and 2 kg or less. The length of the first battery pack BP1 in the front-to-back direction is 115 mm or more and 155 mm or less. The length of the first battery pack BP1 in the left-right direction is 75 mm or more and 85 mm or less. The length of the first battery pack BP1 in the top-to-bottom direction is 65 mm or more and 115 mm or less. The volume of the first battery pack BP1 is 500 cm 3 Over 1500cm 3 Below. Fig. 9As shown, the maximum voltage value of the first battery pack BP1 is greater than or equal to 40 V and less than or equal to 80 V. The rated capacity of the first battery pack BP1 is greater than or equal to 4 Ah and less than or equal to 40 Ah. In a modified example, the configuration (i.e., size, maximum voltage value, and rated capacity) of the first battery pack BP1 may be different from the configuration (i.e., size, maximum voltage value, and rated capacity) of the second battery pack BP2.

[0104] like Fig.10 As shown, the first battery pack BP1 includes a battery case 56, a hook 58, a right battery rail 60, and a left battery rail 62. The battery case 56 accommodates chargeable and dischargeable secondary battery cells, such as lithium ion battery cells, therein.

[0105] The hook portion 58 is movably mounted on the lower surface 56a of the battery case 56. The hook portion 58 includes: an engaging portion 64 and an operating portion 66. The engaging portion 64 is, for example, an engaging claw. The engaging portion 64 usually protrudes to the outside of the battery case 56. When the operating portion 66 is pressed into the battery case 56, the engaging portion 64 as a whole moves into the inside of the battery case 56.

[0106] The right battery rail 60 and the left battery rail 62 protrude from the lower surface 56a of the battery case 56. The right battery rail 60 and the left battery rail 62 extend in the front-rear direction. The right battery rail 60 and the left battery rail 62 are arranged in the left-right direction. In the left-right direction, the engaging portion 64 is arranged between the right battery rail 60 and the left battery rail 62. The right battery rail 60 extends downward from the lower surface 56a of the battery case 56, then bends and extends toward the right. The left battery rail 62 extends downward from the lower surface 56a of the battery case 56, then bends and extends toward the left.

[0107] like Fig.11 As shown in FIG. 1 , when the first battery pack BP1 is slid along the mounting direction D1, the first battery pack BP1 is supported by the first right rail portion 40 (see FIG. 1 ). Figure 7 ) and the first left rail portion 42 (refer to Figure 7 ) is guided to slide on the upper surface 34a of the first truncated pyramid portion 34. The installation direction D1 is the forward direction. At this time, the right battery rail 60 (refer to Fig.10 ) is slidably engaged with the first right rail portion 40, and the left battery rail 62 (refer to Fig.10) is slidably engaged with the first left rail portion 42. When the first battery pack BP1 slides on the upper surface 34a and the engaging portion 64 abuts against the upper surface 34a, the engaging portion 64 is pressed into the interior of the battery case 56 through the upper surface 34a. A groove 34b recessed from the upper surface 34a is formed on the upper surface 34a. When the engaging portion 64 reaches the groove 34b, it flies out from the interior of the battery case 56 to the outside and engages with the upper surface 34a in the groove 34b. Thus, the first battery pack BP1 is mounted on the first battery mounting portion 22. When the first battery pack BP1 is slid along the removal direction D2 in order to pull the engaging portion 64 out of the groove 34b while the operation portion 66 is pressed in, the first battery pack BP1 is removed from the first battery mounting portion 22. The removal direction D2 is opposite to the mounting direction D1 and is the rearward direction. Although not shown in the figure, the mounting direction of the second battery pack BP2 to the second battery mounting portion 24 is the same as the mounting direction D1. The removal direction of the second battery pack BP2 from the second battery mounting portion 24 is the same as the removal direction D2.

[0108] like Figure 8 As shown, when the first battery pack BP1 is mounted on the first battery mounting portion 22 and the second battery pack BP2 is mounted on the second battery mounting portion 24, the lower surface 56a of the battery case 56 of the first battery pack BP1 abuts against the first battery mounting portion 22 from above, and the lower surface 56a of the battery case 56 of the second battery pack BP2 abuts against the second battery mounting portion 24 from above. The left surface 56b of the battery case 56 of the first battery pack BP1 is opposite to the right surface 56c of the battery case 56 of the second battery pack BP2 in the left-right direction. The left surface 56b of the battery case 56 of the first battery pack BP1 and the right surface 56c of the battery case 56 of the second battery pack BP2 are substantially parallel. The wall portion including the storage portion 20 is not disposed between the left surface 56b of the battery case 56 of the first battery pack BP1 and the right surface 56c of the battery case 56 of the second battery pack BP2. The distance between the left surface 56b of the battery case 56 of the first battery pack BP1 and the right surface 56c of the battery case 56 of the second battery pack BP2 is 175 mm or less. In a modified example, the distance between the left surface 56b of the battery case 56 of the first battery pack BP1 and the right surface 56c of the battery case 56 of the second battery pack BP2 may be 350 mm or less.

[0109] like Figure 7As shown, the motor unit 10 includes a first battery connection terminal 70, a second battery connection terminal 72, a main power switch 74, a display panel 76, an operation switch 78a, and a speed change switch 78b. The first battery connection terminal 70 and the second battery connection terminal 72 are arranged on the upper surface 34a of the first truncated pyramid portion 34. The first battery connection terminal 70 is surrounded by the first battery mounting portion 22. The first battery connection terminal 70 includes a plurality of first terminal members 79. When the first battery pack BP1 is mounted on the first battery mounting portion 22, the first terminal member 79 is electrically connected to a terminal member (not shown) of the first battery pack BP1.

[0110] The second battery joint end 72 is surrounded by the second battery mounting portion 24. The second battery joint end 72 includes a plurality of second terminal members 80. When the second battery pack BP2 is mounted on the second battery mounting portion 24, the second terminal member 80 is electrically connected to a terminal member (not shown) of the second battery pack BP2. In the present embodiment, when the first battery pack BP1 is mounted on the first battery mounting portion 22 and the second battery pack BP2 is mounted on the second battery mounting portion 24, the first battery pack BP1 and the second battery pack BP2 are electrically connected in series. In a modified example, the second terminal member 80 may be electrically connected in parallel to the first terminal member 79.

[0111] The main power switch 74 and the display panel 76 are arranged on the second pyramid portion 36. The main power switch 74 switches the on state and the off state of the motor unit 10. The display panel 76 lights up when the motor unit 10 is in the on state.

[0112] The action switch 78a is arranged on the rear side of the main power switch 74 and the display panel 76. The action switch 78a is a rocker switch. When the right part of the action switch 78a is pressed into the main housing 12, the left part of the action switch 78a pops out from the main housing 12, and when the left part of the action switch 78a is pressed into the main housing 12, the right part of the action switch 78a pops out from the main housing 12. When the motor unit 10 is in the on state, once the left part of the action switch 78a is pressed into the main housing 12, the motor unit 10 will operate. When the motor unit 10 is operating, once the right part of the action switch 78a is pressed into the main housing 12, the motor unit 10 will stop.

[0113] The rotation speed changing switch 78b is arranged on the second truncated pyramid portion 36. The rotation speed changing switch 78b is arranged on the left side of the display panel 76. The rotation speed changing switch 78b changes the rotation speed of a motor 86 described later.

[0114] like Fig.12 As shown, the motor unit 10 includes a motor housing 84 and a motor 86 (see Fig.16 )、Fan 88 (refer to Fig.16 ), the fixing unit 90, the plate member 92, the vibration-proof part 94 (refer to Fig.18 as well as Fig.19 )、right cover member 96、left cover member 98、support unit 100、control unit 102 (refer to Fig.25 ), and the cylindrical vibration-proof member 104 (refer to Fig.25 ).

[0115] like Fig.13 As shown, the motor housing 84 is surrounded by the housing portion 20. The housing portion 20 is arranged outside the motor housing 84. The motor housing 84 houses a motor 86 and a fan 88 therein. The motor housing 84 includes a motor housing body 108, a front bracket 110, and a rear bracket 112.

[0116] The motor housing body 108 includes a cylindrical portion 114, a partition wall portion 116, and a screw boss portion 118 (see Fig.14 ), and a foot portion 120. The cylinder portion 114 has a cylindrical shape. The partition wall portion 116 extends radially inward from the inner surface of the cylinder portion 114 toward the center of the cylinder portion 114. Fig.14 As shown in FIG. 1 , the screw boss portion 118 protrudes upward from the upper portion of the barrel portion 114. The foot portion 120 protrudes downward from the lower portion of the barrel portion 114. Fig.13 As shown, the leg portion 120 passes through the second opening 28 .

[0117] The front bracket 110 is screwed by screws 121 (see Fig.14 ) and is fixed to the front end of the motor housing body 108. The motor housing space 122 is divided by the front bracket 110, the cylinder 114, and the front surface of the partition wall 116. The front bracket 110 passes through the first opening 26 of the main housing 12. The front bracket 110 is separated from the outer edge of the first opening 26. The air intake port 26a is divided by the front bracket 110 and the outer edge of the first opening 26. The air intake port 26a is a part of the first opening 26. The air intake port 26a connects the housing space 18 of the main housing 12 with the outside of the main housing 12. As shown in FIG. Fig.15 As shown, the front bracket 110 has an exhaust port 124. The exhaust port 124 penetrates the front bracket 110 in the front-rear direction. The exhaust port 124 connects the motor housing space 122 with the outside of the motor housing 84.

[0118] like Fig.16 As shown, the rear bracket 112 is connected by screws 125 (see Fig.14) and is fixed to the rear end of the motor housing body 108. The fan accommodation space 126 is divided by the rear surface of the rear bracket 112, the cylinder 114, and the partition wall 116. The rear bracket 112 has a motor air intake port 128. The rear bracket 112 penetrates the motor air intake port 128 in the front-to-back direction. The motor air intake port 128 connects the fan accommodation space 126 with the outside of the motor housing 84.

[0119] The motor 86 is disposed in the motor housing space 122. The motor 86 is, for example, a DC motor. In a modified example, the motor 86 may also be an AC motor. The motor 86 is an outer rotor type brushless motor. In a modified example, the motor 86 may be an inner rotor type brushless motor or a brushed motor. When the motor unit 10 is in the on state, the action switch 78a (see Figure 7 ) is pressed into the main body housing 12, the motor 86 is activated. The motor 86 is activated by the power supplied from the battery pack BP.

[0120] like Figure 5 As shown, the weight of the motor 86 is greater than 2 kg and less than 3 kg. The length of the motor 86 in the front-to-back direction is greater than 140 mm and less than 145 mm. The volume of the motor 86 is 650 cm 3 Over 750cm 3 The diameter of the motor 86 is greater than 80 mm and less than 145 mm. Fig. 9 As shown, the maximum output value of motor 86 is greater than or equal to 1.5 kW and less than or equal to 4 kW. In a modified example, the maximum output value of motor 86 may be greater than or equal to 1.5 kW and less than or equal to 3 kW, or may be greater than or equal to 1.5 kW and less than or equal to 2.35 kW. The maximum current value of motor 86 is greater than or equal to 15 A and less than or equal to 70 A. The torque of motor 86 is greater than or equal to 2 N·m and less than or equal to 11 N·m. In a modified example, the torque of motor 86 may be greater than or equal to 3 N·m and less than or equal to 8 N·m. The rotation speed of motor 86 is greater than or equal to 3000 rpm and less than or equal to 4300 rpm.

[0121] like Fig.16 As shown, the motor 86 includes a stator body 132, a coil 134, an outer rotor body 136, a plurality of permanent magnets 138, and a motor shaft 140. The coil 134 is wound around the stator body 132. The outer rotor body 136 is arranged to surround the outer peripheral surface of the stator body 132. The diameter of the outer rotor body 136 is substantially the same as the diameter of the motor 86. Each permanent magnet 138 is fixed to the outer rotor body 136.

[0122] The motor shaft 140 is fixed to the outer rotor body 136. When the motor unit 10 is placed on the placement surface P1, the motor shaft 140 extends along the placement surface P1. The motor shaft 140 passes through the stator body 132. The motor shaft 140 passes through the partition wall 116. The motor shaft 140 is rotatably supported by the partition wall 116 via a bearing 142. The motor shaft 140 passes through the front bracket 110. The motor shaft 140 is rotatably supported by the front bracket 110 via a bearing 144. The motor shaft 140 rotates around the central axis 140a.

[0123] The fan 88 is fixed to the rear end of the motor shaft 140. The fan 88 is arranged in the fan accommodation space 126. In this embodiment, the fan 88 is a centrifugal fan. In a modified example, the fan 88 may also be an axial flow fan. The fan 88 rotates integrally with the motor shaft 140.

[0124] The fixing unit 90 includes: a first fixing portion 148 and a second fixing portion 150. The first fixing portion 148 is fixed to the lower end of the leg 120 by a screw 152. The first fixing portion 148 includes a first fixing surface 148a. The first fixing surface 148a corresponds to the lower surface of the first fixing portion 148. The first fixing surface 148a is substantially parallel to the motor shaft 140. When the motor unit 10 is placed on the placement surface P1, the first fixing surface 148a contacts the placement surface P1. The first fixing surface 148a is fixed to the operation unit 4 (see Figure 3 ).

[0125] like Fig.13 As shown, the first fixing portion 148 is arranged on the lower side of the motor 86. The motor 86 is arranged between the first fixing portion 148 and the first battery mounting portion 22. In addition, the motor 86 is arranged between the first fixing portion 148 and the second battery mounting portion 24 (see Fig.12 )between.

[0126] like Fig.16 As shown, the second fixing portion 150 is formed on the front bracket 110. The second fixing portion 150 has a second fixing surface 150a. The second fixing surface 150a corresponds to the front surface of the second fixing portion 150. When the motor unit 10 is placed on the placement surface P1, the second fixing surface 150a is orthogonal to the placement surface P1. The second fixing surface 150a is substantially orthogonal to the first fixing surface 148a. The second fixing surface 150a is substantially orthogonal to the motor shaft 140. The second fixing surface 150a is fixed to the operation unit 4 (refer to Figure 2 ). The type of the operation unit 4 fixed to the second fixing surface 150a is different from the type of the operation unit 4 fixed to the first fixing surface 148a.

[0127] like Fig.17As shown, the plate member 92 includes a plate body 154. The plate body 154 is formed by bending a single plate. The plate body 154 has a substantially U-shape. The plate body 154 is fixed to the screw boss portion 118 by screws 155. The plate body 154 is opposed to the upper portion, the right portion, and the left portion of the cylinder portion 114.

[0128] like Fig.18 as well as Fig.19 As shown, the plate member 92 includes: a first right sleeve 156, a second right sleeve 158, a third right sleeve 160, a first left sleeve 162, a second left sleeve 164, and a third left sleeve 166. The first right sleeve 156 has a cylindrical shape. The shape of the second right sleeve 158, the shape of the third right sleeve 160, the shape of the first left sleeve 162, the shape of the second left sleeve 164, and the shape of the third left sleeve 166 are the same as the shape of the first right sleeve 156.

[0129] like Fig.18 As shown, the first right sleeve 156, the second right sleeve 158, and the third right sleeve 160 protrude toward the right from the right wall 154a of the plate body 154. The first right sleeve 156 is arranged at the lower part of the right wall 154a. The second right sleeve 158 is arranged at the front upper part of the right wall 154a. The third right sleeve 160 is arranged at the rear upper part of the right wall 154a.

[0130] like Fig. 20 As shown, the first right sleeve 156 is arranged at a position lower than the central axis 140a of the motor shaft 140. The second right sleeve 158 and the third right sleeve 160 are arranged at a position higher than the central axis 140a of the motor shaft 140. The position of the second right sleeve 158 in the up-down direction is substantially the same as the position of the third right sleeve 160 in the up-down direction. In the front-back direction, the first right sleeve 156 is arranged at the center between the second right sleeve 158 and the third right sleeve 160. The distance between the first right sleeve 156 and the second right sleeve 158 is substantially the same as the distance between the second right sleeve 158 and the third right sleeve 160, and the distance between the third right sleeve 160 and the first right sleeve 156.

[0131] like Fig.19As shown, the first left sleeve 162, the second left sleeve 164, and the third left sleeve 166 protrude toward the left from the left wall 154b of the plate body 154. The position of the first left sleeve 162 in the up-down direction and the front-to-back direction is substantially the same as the position of the first right sleeve 156 in the up-down direction and the front-to-back direction. The position of the second left sleeve 164 in the up-down direction and the front-to-back direction is substantially the same as the position of the second right sleeve 158 in the up-down direction and the front-to-back direction. The position of the third left sleeve 166 in the up-down direction and the front-to-back direction is substantially the same as the position of the third right sleeve 160 in the up-down direction and the front-to-back direction. As shown in FIG. Fig.21 As shown, the distance between the first left sleeve 162 and the second left sleeve 164 is substantially the same as the distance between the second left sleeve 164 and the third left sleeve 166, and the distance between the third left sleeve 166 and the first left sleeve 162. In addition, the distance between the first left sleeve 162 and the second left sleeve 164 is substantially the same as the distance between the first right sleeve 156 (refer to Fig. 20 ) and the second right sleeve 158 (refer to Fig. 20 ) are approximately the same distance apart.

[0132] like Fig.18 as well as Fig.19 As shown, the vibration-proof part 94 includes: a first right vibration-proof component 170, a second right vibration-proof component 172, a third right vibration-proof component 174, a first left vibration-proof component 176, a second left vibration-proof component 178, and a third left vibration-proof component 180. The first right vibration-proof component 170 has a cylindrical shape. The first right vibration-proof component 170 is made of an elastic material. The first right vibration-proof component 170 is made of, for example, foam, a rubber material, a thermoplastic elastomer material, or a thermosetting elastomer material. The shape of the second right vibration-proof component 172, the shape of the third right vibration-proof component 174, the shape of the first left vibration-proof component 176, the shape of the second left vibration-proof component 178, and the shape of the third left vibration-proof component 180 are the same as the shape of the first right vibration-proof component 170. The material of the second right vibration isolating member 172 , the material of the third right vibration isolating member 174 , the material of the first left vibration isolating member 176 , the material of the second left vibration isolating member 178 , and the material of the third left vibration isolating member 180 are the same as the material of the first right vibration isolating member 170 .

[0133] like Fig.18As shown, the first right sleeve 156 is inserted into the opening 170a of the first right vibration-proofing component 170. The second right sleeve 158 is inserted into the opening 172a of the second right vibration-proofing component 172. The third right sleeve 160 is inserted into the opening 174a of the third right vibration-proofing component 174. When the first right vibration-proofing component 170 abuts against the right wall 154a of the plate body 154, it protrudes further to the right than the first right sleeve 156. When the second right vibration-proofing component 172 abuts against the right wall 154a of the plate body 154, it protrudes further to the right than the second right sleeve 158. When the third right vibration-proofing component 174 abuts against the right wall 154a of the plate body 154, it protrudes further to the right than the third right sleeve 160. As shown in FIG. Fig. 20 As shown, the first right vibration-proofing member 170 is arranged at a position lower than the center of gravity G1 of the motor unit 10. The center of gravity G1 of the motor unit 10 is the center of gravity when the battery pack BP is not installed. The second right vibration-proofing member 172 and the third right vibration-proofing member 174 are arranged at a position higher than the center of gravity G1 of the motor unit 10. The distance between the first right vibration-proofing member 170 and the second right vibration-proofing member 172 is substantially the same as the distance between the second right vibration-proofing member 172 and the third right vibration-proofing member 174, and the distance between the third right vibration-proofing member 174 and the first right vibration-proofing member 170. In the front-to-back direction, the center position of the first right vibration-proofing member 170 is substantially the same as the position of the center of gravity G1 of the motor unit 10.

[0134] like Fig.19 As shown, the first left sleeve 162 is inserted into the opening 176a of the first left vibration-proof member 176. The first left vibration-proof member 176 is arranged at a position lower than the center of gravity G1 of the motor unit 10. The second left sleeve 164 is inserted into the opening 178a of the second left vibration-proof member 178. The third left sleeve 166 is inserted into the opening 180a of the third left vibration-proof member 180. The second left vibration-proof member 178 and the third left vibration-proof member 180 are arranged at a position higher than the center of gravity G1 of the motor unit 10. When the first left vibration-proof member 176 abuts against the left wall 154b of the plate body 154, it protrudes further to the left than the first left sleeve 162. When the second left vibration-proof member 178 abuts against the left wall 154b of the plate body 154, it protrudes further to the left than the second left sleeve 164. When the third left vibration-proof member 180 abuts against the left wall 154b of the plate body 154, it protrudes further to the left than the third left sleeve 166. Fig.21 As shown, the distance between the first left vibration-proofing member 176 and the second left vibration-proofing member 178 is substantially the same as the distance between the second left vibration-proofing member 178 and the third left vibration-proofing member 180, and the distance between the third left vibration-proofing member 180 and the first left vibration-proofing member 176. In addition, the distance between the first left vibration-proofing member 176 and the second left vibration-proofing member 178 is substantially the same as the distance between the first right vibration-proofing member 170 (see Fig. 20 ) and the second right vibration-proof member 172 (refer to Fig. 20 In the front-rear direction, the center position of the first left vibration-isolating member 176 and the position of the center of gravity G1 of the motor unit 10 are substantially the same.

[0135] like Fig. 22 As shown in FIG. 1 , when the motor unit 10 is placed on the placement surface P1, the first right vibration-isolating member 170 and the first left vibration-isolating member 176 are arranged at a position lower than the upper end 86a of the motor 86. The upper end 86a of the motor 86 and the upper end of the outer rotor body 136 are substantially the same. Figure 20 to Figure 23 In FIG, the position of the upper end 86a of the motor 86 in the vertical direction is illustrated by a dotted line. The first right vibration-proofing component 170 and the first left vibration-proofing component 176 are arranged at a position lower than the central axis 140a of the motor shaft 140. The first right vibration-proofing component 170 and the first left vibration-proofing component 176 are arranged at a position higher than the lower end 86b of the motor 86. The lower end 86b of the motor 86 is substantially the same as the lower end of the outer rotor body 136. Figure 20 to Figure 23 In the figure, the position of the lower end 86b of the motor 86 in the up-down direction is illustrated by a dashed line. The orthogonal plane P2 is orthogonal to the mounting plane P1, and the first right vibration isolation component 170 is configured to be plane-symmetrical with the first left vibration isolation component 176 relative to the orthogonal plane P2 including the central axis 140a of the motor shaft 140 (i.e., the front-to-back direction). The distance between the first right vibration isolation component 170 and the orthogonal plane P2 and the distance between the first left vibration isolation component 176 and the orthogonal plane P2 are substantially the same. When the motor unit 10 is observed in the front-to-back direction, the motor 86 and the fan 88 are arranged between the first right vibration isolation component 170 and the first left vibration isolation component 176. When the motor unit 10 is observed in the left-to-right direction, the motor 86 and the fan 88 are at least partially adjacent to the first right vibration isolation component 170 and the first left vibration isolation component 176, respectively (refer to Fig.21 )coincide.

[0136] like Fig.23As shown, when the motor unit 10 is placed on the placement surface P1, the second right vibration isolation member 172 and the second left vibration isolation member 178 are arranged at a position more upward than the lower end 86b of the motor 86. The second right vibration isolation member 172 and the second left vibration isolation member 178 are arranged at a position more upward than the central axis 140a of the motor shaft 140. The center of the second right vibration isolation member 172 in the vertical direction and the center of the second left vibration isolation member 178 in the vertical direction are arranged at a position more downward than the upper end 86a of the motor 86. The upper end of the second right vibration isolation member 172 and the upper end of the second left vibration isolation member 178 are arranged at a position more upward than the upper end 86a of the motor 86. The second right vibration isolation member 172 is arranged to be plane-symmetrical with the second left vibration isolation member 178 with respect to the orthogonal plane P2. The distance between the second right vibration-proofing member 172 and the orthogonal plane P2 is substantially the same as the distance between the second left vibration-proofing member 178 and the orthogonal plane P2. Fig. 22 ) is disposed between the second right vibration isolating member 172 and the second left vibration isolating member 178. When the motor unit 10 is viewed in the front-rear direction, the entirety of the second right vibration isolating member 172 and the third right vibration isolating member 174 (see Fig. 20 ) are overlapped as a whole, and the whole of the second left vibration-isolating component 178 overlaps with the third left vibration-isolating component 180 (refer to Fig.21 ) as a whole. The third right vibration-proofing component 174 is arranged to be plane-symmetrical with the third left vibration-proofing component 180 relative to the orthogonal plane P2. In addition, when the motor unit 10 is observed in the front-to-back direction, the motor 86 and the fan 88 are arranged between the third right vibration-proofing component 174 and the third left vibration-proofing component 180.

[0137] When the motor unit 10 is viewed in the left-right direction, the motor 86 is disposed between the second right vibration isolating member 172 and the second left vibration isolating member 178 (see Fig.21 ). Fig. 20 As shown, the second right vibration-proofing member 172 and the second left vibration-proofing member 178 are arranged at a position closer to the front side than the fan 88. In addition, the third right vibration-proofing member 174 and the third left vibration-proofing member 180 (see Fig.21 ) is arranged at a position further to the rear than the fan 88.

[0138] like Fig.18As shown, the right cover member 96 is arranged on the right side of the right wall 154a of the plate body 154. The first right vibration-proofing member 170, the second right vibration-proofing member 172, and the third right vibration-proofing member 174 are sandwiched between the right cover member 96 and the right wall 154a of the plate body 154. The right cover member 96 is attached to the plate body 154 by means of the first right vibration-proofing member 170, the second right vibration-proofing member 172, and the third right vibration-proofing member 174. The right cover member 96 does not abut against the plate member 92. Fig.12 As shown, the right cover member 96 is disposed between the right main body housing 14 and the right wall 154a of the plate body 154. The right cover member 96 is fixed to the right main body housing 14. Fig.18 ), second right anti-vibration member 172 (refer to Fig.18 ), and the third right vibration-isolating member 174 (refer to Fig.18 ) is prevented from detaching from the plate member 92.

[0139] like Fig.19 As shown, the left cover member 98 is arranged on the left side of the left wall 154b of the plate body 154. The first left vibration-proof member 176, the second left vibration-proof member 178, and the third left vibration-proof member 180 are sandwiched between the left cover member 98 and the left wall 154b of the plate body 154. The left cover member 98 is attached to the plate body 154 by means of the first left vibration-proof member 176, the second left vibration-proof member 178, and the third left vibration-proof member 180. The left cover member 98 does not abut against the plate member 92. Fig.12 As shown, the left cover member 98 is disposed between the left main body shell 16 and the left wall 154b of the plate body 154. The left cover member 98 is fixed to the left main body shell 16. Fig.19 ), second left anti-vibration member 178 (refer to Fig.19 ), and the third left vibration-proof member 180 (refer to Fig.19 ) is prevented from detaching from the plate member 92.

[0140] like Fig.24 As shown, the support unit 100 includes a support plate 184. The support plate 184 is formed by bending a single plate. The support plate 184 has a substantially U-shape. The support plate 184 includes an upper wall 184a facing the upper surface of the plate body 154 of the plate member 92, a right wall 184b facing the right surface of the right cover member 96, and a left wall 184c facing the left surface of the left cover member 98. The plate member 92, the right cover member 96, and the left cover member 98 are sandwiched between the right wall 184b and the left wall 184c.

[0141] The upper wall 184a has: two right positioning holes 185a and two left positioning holes 185b. The right positioning hole 185a penetrates the upper wall 184a in the up-down direction. The right positioning hole 185a is arranged at the right end of the upper wall 184a. The two right positioning holes 185a are arranged in the front-to-back direction. The left positioning hole 185b penetrates the upper wall 184a in the up-down direction. The left positioning hole 185b is arranged at the left end of the upper wall 184a. The two left positioning holes 185b are arranged in the front-to-back direction.

[0142] The right cover member 96 includes two right positioning protrusions 96a protruding upward, and the right positioning hole 185a receives the right positioning protrusion 96a. The left cover member 98 includes two left positioning protrusions 98a protruding upward, and the left positioning hole 185b receives the left positioning protrusion 98a. Thus, the support plate 184 is positioned relative to the right cover member 96 and the left cover member 98. The support plate 184 is fixed to the right cover member 96 by the screw 185c. The support plate 184 is fixed to the left cover member 98 by the screw 185d.

[0143] like Fig. 22 As shown, the right wall 184b is sandwiched between the right surface of the right cover member 96 and the right main body shell 14. The right wall 184b, the right cover member 96, and the right main body shell 14 are fixed to each other by screws 186. The left wall 184c is sandwiched between the left surface of the left cover member 98 and the left main body shell 16. The left wall 184c, the left cover member 98, and the left main body shell 16 are fixed to each other by screws 188.

[0144] like Fig.25 As shown, the control unit 102 is arranged on the rear side of the motor housing 84. The control unit 102 is arranged on the main body housing 12 (see Figure 4 ) inside. The control unit 102 includes: a substrate housing 192, a filter component 194 (see Fig.26 )、Control circuit board 196 (refer to Fig.26 ), and substrate housing 197 (refer to Fig.26 ). The substrate housing 192 includes an outer housing portion 198 and an inner housing portion 199 (see Fig.26 The outer shell portion 198 defines the outer shape of the control unit 102. The outer shell portion 198 is fixed to the rear end of the support plate 184 by screws 190. Fig.26 As shown, the outer housing part 198 has an inner space 200 therein. In addition, the outer housing part 198 has an air inlet port 202. The air inlet port 202 is located at a rear position of the outer housing part 198. The air inlet port 202 connects the inner space 200 with the outside of the substrate housing 192.

[0145] The inner housing part 199 is arranged in the internal space 200. The inner housing part 199 is arranged in front of the air inlet port 202. The inner housing part 199 is fixed to the outer housing part 198. The inner housing part 199 has a substrate housing space 203 inside.

[0146] The filter component 194 is arranged in the internal space 200. The filter component 194 is arranged in front of the air inlet port 202. The filter component 194 blocks the air inlet port 202. The filter component 194 has fine ventilation holes (not shown) inside. The filter component 194 is made of, for example, a filter material or a foam material. The air flows to the filter component 194 through the ventilation holes. When the air flows through the ventilation holes, the filter component 194 can remove foreign matter such as dust flowing with the air from the air.

[0147] The control circuit substrate 196 is arranged in the substrate accommodating space 203. The control circuit substrate 196 has: a microcomputer and a plurality of switching elements. The switching elements are, for example, IGBTs or MOSFETs. The switching elements are switched between an on state and an off state by being controlled by the microcomputer. The control circuit substrate 196 is arranged along a surface, and the surface is a surface along the up-down direction and the left-right direction. The control circuit substrate 196 is arranged on the front side of the air intake port 202. The control circuit substrate 196 is arranged on the rear side of the motor air intake port 128 of the rear bracket 112. The control circuit substrate 196 controls the motor 86 (refer to Fig.13 ) to control. Fig.13 As shown, the control circuit board 196 is arranged on the central axis 140a of the motor shaft 140. The control circuit board 196 is arranged on the rear side of the fan 88. When the motor unit 10 is viewed in the front-to-back direction, the control circuit board 196 at least partially overlaps with the motor 86 and the fan 88. The motor 86, the fan 88, and the control circuit board 196 are arranged in a row in the front-to-back direction.

[0148] like Fig.26 As shown, the substrate housing 197 is arranged in the substrate accommodating space 203. The substrate housing 197 is arranged in front of the air inlet port 202. The substrate housing 197 is arranged between the control circuit substrate 196 and the air inlet port 202. The substrate housing 197 supports the control circuit substrate 196. The control circuit substrate 196 is arranged inside the substrate housing 197. The substrate housing 197 is fixed to the inner shell part 199. The substrate housing 197 has a heat sink 204. The heat sink 204 has a flat plate shape extending in the up-down direction and the front-back direction. The inner shell part 199 has a through hole 199a that passes through the rear end of the inner shell part 199, and the heat sink 204 passes through the through hole 199a. The heat sink 204 is opposite to the air inlet port 202 in the front-back direction.

[0149] The cylindrical vibration-isolating member 104 is disposed on the front side of the substrate housing 192 and the rear side of the rear bracket 112. The cylindrical vibration-isolating member 104 is made of an elastic material. The material of the cylindrical vibration-isolating member 104 and the first right vibration-isolating member 170 (see Fig.18 ) are made of the same material. The cylindrical vibration-proof component 104 has a cylindrical shape. Here, the cylindrical shape includes: a corrugated shape with a circular cross-section. The cylindrical vibration-proof component 104 has an air passage 208 inside. The cylindrical vibration-proof component 104 is fixed to the front end of the substrate housing 192 and the rear end of the rear bracket 112, respectively. The front end of the substrate housing 192 is open, and the cylindrical vibration-proof component 104 surrounds the front end of the substrate housing 192. The air passage 208 is connected to the internal space 200 via the front end of the substrate housing 192. The cylindrical vibration-proof component 104 surrounds the motor air intake port 128 of the rear bracket 112. The air passage 208 is connected to the fan housing space 126 via the motor air intake port 128. As Fig.13 As shown, when the motor unit 10 is viewed in the front-rear direction, the air passage 208 at least partially overlaps with the motor 86 and the fan 88, respectively.

[0150] The control circuit board 196 controls so that when the motor 86 is operated, the motor shaft 140 rotates and the fan 88 rotates. Fig.15 As shown, the air passes through the air inlet 26a and flows from the outside of the motor unit 10 into the storage space 18 of the main housing 12. In addition, in the drawings, the arrow line marked with the symbol F1 indicates the air flow direction. The inflowing air flows to the rear between the motor housing 84 and the plate member 92, between the plate member 92 and the support plate 184, and between the support plate 184 and the upper wall 20c of the main housing 12.

[0151] like Fig.26 As shown, after the air flows around the outer shell portion 198, it passes through the air intake port 202 and flows into the internal space 200. The inflowing air passes through the filter component 194 and flows upward along the heat sink 204 between the outer shell portion 198 and the inner shell portion 199. Since the air passes through the filter component 194, foreign matter flowing with the air can be removed from the air. In addition, the control circuit substrate 196 is cooled by the air flowing along the heat sink 204. Next, the air flows forward between the outer shell portion 198 and the inner shell portion 199, passes through the air passage 208 of the cylindrical vibration-proof component 104 and the motor air intake port 128 of the rear bracket 112, and flows from the internal space 200 into the fan housing space 126.

[0152] like Fig.15As shown, the air flowing into the fan housing space 126 is sent in a direction away from the central axis 140a (radially outward of the fan 88) by the fan 88. Next, the air flows from the fan housing space 126 into the motor housing space 122. The air flowing into the motor housing space 122 flows forward inside and outside the motor 86. Accordingly, the motor 86 is cooled. Thereafter, the air passes through the exhaust port 124 of the front bracket 110 and is discharged from the motor housing space 122 to the outside of the motor unit 10.

[0153] like Figure 2 , Figure 3 ,as well as Figures 27 to 33 As shown, the motor unit 10 can be applied to a variety of working units 4. Figure 2 , Figure 3 ,as well as Figures 27 to 33 In the description, the coordinate system is changed to a coordinate system different from the coordinate system related to the above-mentioned motor unit 10. Specifically, the direction perpendicular to the mounting surface P1 is called the up-down direction, the direction perpendicular to the up-down direction is called the front-back direction, and the direction perpendicular to the up-down direction and the front-back direction is called the left-right direction.

[0154] like Fig. 27 As shown, the motor unit 10 can be mounted on the rammer 4a. The rammer 4a is a ground compacting device that compacts the ground. The rammer 4a includes an upper housing 300, a handle unit 302, and a working unit 304. The upper housing 300 includes a fixing base 308 located at the upper rear portion. The fixing base 308 is fixed to the second fixing surface 150a of the motor unit 10.

[0155] Before describing the detailed structure of the fixing table 308, the detailed structure of the second fixing portion 150 of the motor unit 10 will be described. Fig.28 As shown, the second fixing portion 150 has two positioning holes 150b, four first fixing holes 150c, four second fixing holes 150d, and an auxiliary hole 150e. The positioning holes 150b, the first fixing holes 150c, the second fixing holes 150d, and the auxiliary holes 150e are arranged on the second fixing surface 150a. The arrangement of the two positioning holes 150b, the four first fixing holes 150c, the four second fixing holes 150d, and the auxiliary holes 150e is the same as the arrangement of the plurality of holes of the engine unit that can be mounted on the rammer 4a. Thus, the second fixing portion 150 can be fixed to the working unit 4 to which the engine unit can be mounted, and the motor unit 10 can be used.

[0156] The two positioning holes 150b are each separated by a certain distance from the central axis 140a of the motor shaft 140. The two positioning holes 150b are arranged around the central axis 140a at an interval of 180 degrees. The two positioning holes 150b are arranged on the orthogonal plane P2.

[0157] The four first fixing holes 150c are each separated from the central axis 140a by a certain distance. The four first fixing holes 150c are arranged around the central axis 140a at intervals of 90 degrees. The distance between the first fixing holes 150c and the central axis 140a is only slightly shorter than the distance between the positioning hole 150b and the central axis 140a. Two first fixing holes 150c are arranged at positions closer to the right than the orthogonal plane P2, and the remaining two first fixing holes 150c are arranged at positions closer to the left than the orthogonal plane P2.

[0158] The four second fixing holes 150d are each separated from the central axis 140a by a certain distance. The distance between the second fixing holes 150d and the central axis 140a is longer than the distance between the positioning hole 150b and the central axis 140a. Two second fixing holes 150d are arranged at a position closer to the right than the orthogonal plane P2, and the remaining two second fixing holes 150d are arranged at a position closer to the left than the orthogonal plane P2. The auxiliary hole 150e is slightly separated from the central axis 140a relative to the second fixing hole 150d.

[0159] like Fig.29 As shown, the fixing base 308 has two positioning holes 308a and four fixing holes 308b. The arrangement of the two positioning holes 308a and the four fixing holes 308b is the same as the arrangement of the two positioning holes 150b and the four second fixing holes 150d of the second fixing portion 150.

[0160] like Fig.29 as well as Fig.30 As shown, when the second fixing portion 150 is fixed to the fixing table 308, first, two positioning pins 309a are respectively inserted into each positioning hole 308a, and then inserted into each positioning hole 150b. Accordingly, the second fixing portion 150 is positioned relative to the fixing table 308. As a result, the fixing hole 308b is opposite to the second fixing hole 150d. Next, four screws 309b are respectively inserted into each fixing hole 308b so as to be screwed into the second fixing hole 150d. Accordingly, the second fixing portion 150 is fixed to the fixing table 308 in a state where it is positioned relative to the fixing table 308. When the second fixing portion 150 is fixed to the fixing table 308, the motor shaft 140 of the motor unit 10 protrudes from the main body housing 12 toward the front lower side.

[0161] like Figure 2As shown, the handle unit 302 includes: a first handle 310, a second handle 312, and a third handle 314. The first handle 310 extends from the upper end of the upper housing 300 toward the rear, then bends and extends toward the right, and then bends and extends toward the front. The first handle 310 surrounds the motor unit 10. The second handle 312 extends from the upper end of the upper housing 300 toward the upper side, then bends and extends toward the right, and then bends and extends toward the lower side. The third handle 314 extends from the upper end of the upper housing 300 toward the lower side of the front, then bends and extends toward the right, and then bends and extends toward the upper side of the rear. The first handle 310, the second handle 312, and the third handle 314 are formed as a whole. At least one of the first handle 310, the second handle 312, and the third handle 314 is held by the user during operation.

[0162] like Fig. 27 As shown, the working unit 304 includes: a telescopic unit 320, a ground leveling unit 322, a bearing connection unit 324, and a driving unit 326. The telescopic unit 320 is fixed to the lower part of the upper housing 300. The telescopic unit 320 can be telescopic. The ground leveling unit 322 is arranged on the lower side of the upper housing 300. The upper part of the ground leveling unit 322 is surrounded by the telescopic unit 320. The ground leveling unit 322 is fixed to the telescopic unit 320. The ground leveling unit 322 includes a ground leveling floor 328 located at the lower end position. The ground leveling floor 328 is in surface contact with the placement surface P1.

[0163] The bearing connection part 324 and the driving part 326 are arranged inside the upper housing 300. The bearing connection part 324 is fixed to the motor shaft 140 of the motor unit 10. The driving part 326 is fixed to the bearing connection part 324. When the motor shaft 140 rotates, the driving part 326 causes the leveling part 322 to operate. Accordingly, the separation action of causing the leveling part 322 to leave the placement surface P1 and the approach action of causing the leveling part 322 to approach the placement surface P1 are repeatedly performed. The leveling floor 328 is repeatedly pressed against the placement surface P1, so that the placement surface P1 such as the ground is compacted.

[0164] like Fig.31 As shown, the motor unit 10 can be mounted on the plate compactor 4b. The plate compactor 4b is a ground compacting device that compacts the ground. The force used by the plate compactor 4b to compact the ground is smaller than the force used by the tamping machine 4a to compact the ground. The plate compactor 4b includes a base 350, a handle unit 352, a transmission device 354, and a working unit 356.

[0165] The base 350 includes a fixing base 360 ​​. The fixing base 360 ​​is fixed to the first fixing surface 148 a of the motor unit 10 .

[0166] Before describing the detailed structure of the fixing table 360, the detailed structure of the first fixing portion 148 of the motor unit 10 will be described. Fig.32 As shown, the first fixing portion 148 has a first positioning hole 148b, a second positioning hole 148c, a first fixing hole 148d, and a second fixing hole 148e. The first positioning hole 148b, the second positioning hole 148c, the first fixing hole 148d, and the second fixing hole 148e are arranged on the first fixing surface 148a. The first positioning hole 148b, the second positioning hole 148c, the first fixing hole 148d, and the second fixing hole 148e penetrate the first fixing portion 148 in the up and down direction. The arrangement of the first positioning hole 148b, the second positioning hole 148c, the first fixing hole 148d, and the second fixing hole 148e is the same as the arrangement of the holes of the engine unit that can be mounted on the plate compactor 4b. In addition, the first fixing surface 148a is aligned with the central axis 140a of the motor shaft 140 (refer to Fig.28 ) between the first fixing portion 148 and the first fixing portion 148. Thus, the first fixing portion 148 can be fixed to the operating unit 4 to which the engine unit can be mounted to use the motor unit 10.

[0167] The first positioning hole 148b and the second positioning hole 148c are arranged at the front end of the first fixing portion 148. The first positioning hole 148b and the second positioning hole 148c are arranged in the left-right direction. The first positioning hole 148b is a round hole. The second positioning hole 148c is a long hole extending in the left-right direction.

[0168] The first fixing hole 148d and the second fixing hole 148e are arranged at the rear end of the first fixing portion 148. The first fixing hole 148d and the second fixing hole 148e are arranged in the left-right direction. The first fixing hole 148d and the first positioning hole 148b are arranged in the front-back direction. The shape of the first fixing hole 148d is substantially the same as the shape of the first positioning hole 148b. The second fixing hole 148e and the second positioning hole 148c are arranged in the front-back direction. The shape of the second fixing hole 148e is substantially the same as the shape of the second positioning hole 148c.

[0169] The fixing platform 360 has a first positioning protrusion 361a, a second positioning protrusion 361b, a first fixing hole 361c, and a second fixing hole 361d. The first positioning protrusion 361a and the second positioning protrusion 361b protrude upward from the upper surface 360a of the fixing platform 360. The first positioning protrusion 361a and the second positioning protrusion 361b have a cylindrical shape. The first positioning protrusion 361a and the second positioning protrusion 361b are arranged in the left-right direction.

[0170] The first fixing hole 361c and the second fixing hole 361d are arranged in the left-right direction. The first fixing hole 361c and the first positioning protrusion 361a are arranged in the front-back direction. The second fixing hole 361d and the second positioning protrusion 361b are arranged in the front-back direction.

[0171] The first fixing hole 361c includes a first long hole portion 361c1 extending in the front-rear direction and a first round hole portion 361c2 arranged at the lower end of the first long hole portion 361c1. The second fixing hole 361d includes a second long hole portion 361d1 extending in the front-rear direction and a second round hole portion 361d2 arranged at the lower end of the second long hole portion 361d1.

[0172] When the first fixing portion 148 is fixed to the fixing table 360, first, the first positioning protrusion 361a is inserted into the first positioning hole 148b, and the second positioning protrusion 361b is inserted into the second positioning hole 148c. Accordingly, the first fixing portion 148 is positioned relative to the fixing table 360. In addition, since the second positioning hole 148c is a long hole, even if the distance between the first positioning protrusion 361a and the second positioning protrusion 361b is different for each product, the first fixing portion 148 can be positioned relative to the fixing table 360. Next, the screw 362a is inserted from the upper side of the first fixing portion 148 into the first fixing hole 361c and the first long hole portion 361c1, so that it is screwed into the first round hole portion 361c2. Next, the screw 362a is inserted into the second fixing hole 361d and the second long hole portion 361d1 from the upper side of the first fixing portion 148 so as to be screwed into the second round hole portion 361d2. Next, the two nuts 362b are screwed into the first positioning protrusion 361a and the second positioning protrusion 361b, respectively. Accordingly, the first fixing portion 148 is fixed to the upper surface 360a of the fixing table 360 ​​in a state where it is positioned relative to the fixing table 360. When the first fixing portion 148 is fixed to the fixing table 360, the motor shaft 140 of the motor unit 10 extends in the left-right direction.

[0173] like Figure 3 As shown, the handle unit 352 includes a first handle 364 and a second handle 366. The first handle 364 extends from the rear end of the base 350 toward the upper rear side, then bends and extends toward the right side, and then bends and extends toward the lower front side. The first handle 364 is arranged at the rear side of the motor unit 10. The user holds the first handle 364 during operation.

[0174] The second handle 366 extends upward from the rear end of the base 350, then bends and extends toward the upper front side, then bends and extends toward the front, and then bends and extends downward. The second handle 366 is arranged to surround the motor unit 10. For example, when picking up the plate compactor 4b, the user holds the second handle 366.

[0175] like Fig.31As shown, the transmission device 354 includes a first pulley 370, a belt 372, and a second pulley 374. The first pulley 370 is fixed to the motor shaft 140. The belt 372 is stretched between the first pulley 370 and the second pulley 374. The second pulley 374 is arranged at a position closer to the front side than the first pulley 370.

[0176] The working part 356 includes a vibrator 378 and a leveling floor 380. The vibrator 378 is fixed to the second pulley 374. When the second pulley 374 rotates, the vibrator 378 moves the leveling floor 380. As a result, the leveling floor 380 vibrates in the vertical direction. By repeatedly pressing the leveling floor 380 against the mounting surface P1, the mounting surface P1 such as the ground is compacted.

[0177] When the tamping machine 4a (refer to Fig. 27 ) or the plate compactor 4b is in motion, the tamping machine 4a or the plate compactor 4b vibrates. Accordingly, the vibration of the tamping machine 4a or the plate compactor 4b is transmitted to the motor unit 10 via the motor shaft 140. Fig. 22 As shown, the vibration transmitted to the motor shaft 140 is transmitted from the motor 86 to the motor housing 84. Next, the vibration is transmitted from the motor housing 84 to the plate member 92, and then to the vibration-proofing member 94. Once the vibration is transmitted to the vibration-proofing member 94, the first right vibration-proofing member 170 and the second right vibration-proofing member 172 (see Fig.18 ), and the third right vibration-isolating member 174 (refer to Fig.18 ) will be elastically deformed in the vertical direction, left-right direction, and front-back direction between the right wall 154a of the plate member 92 and the right cover member 96, and the first left vibration-proof member 176 and the second left vibration-proof member 178 (refer to Fig.18 ), and the third left vibration-proof member 180 (refer to Fig.18 ) is elastically deformed in the vertical direction, the horizontal direction, and the front-rear direction between the left wall 154b of the plate member 92 and the left cover member 98. As a result, the vibration is attenuated, and the vibration is suppressed from being transmitted to the right cover member 96 and the left cover member 98. As a result, the vibration is transmitted to the battery pack BP (see Figure 4 ) is suppressed, and the vibration is transmitted to the control circuit substrate 196 of the control unit 102 via the support unit 100 (refer to Fig.26 ) situation is suppressed.

[0178] In addition, if Fig.26As shown, the vibration transmitted to the motor housing 84 is transmitted to the cylindrical vibration-proof member 104. Once the vibration is transmitted, the cylindrical vibration-proof member 104 is elastically deformed in the vertical direction, the left-right direction, and the front-back direction between the motor housing 84 and the substrate housing 192. Accordingly, the vibration is attenuated, and the situation where the vibration is transmitted to the substrate housing 192 is suppressed. As a result, the situation where the vibration is transmitted to the control circuit substrate 196 is suppressed.

[0179] like Fig.33 As shown, the motor unit 10 can be mounted on a slope mower 4c. The slope mower 4c is a device for mowing. The slope mower 4c includes: a housing 400, a pair of front wheels 402, a pair of rear wheels 404, a handle unit 406, and a working unit 408. The housing 400 includes: a fixing base 412 located at an upper position. The fixing base 412 is fixed to the second fixing surface 150a of the motor unit 10. The motor shaft 140 of the motor unit 10 protrudes downward from the main housing 12.

[0180] A pair of front wheels 402 are rotatably supported at the front portion of the housing 400. A pair of rear wheels 404 are rotatably supported at the rear portion of the housing 400. The slope mower 4c moves on the placement surface P1 by the rotation of the pair of front wheels 402 and the pair of rear wheels 404.

[0181] The handle unit 406 includes a fixed frame 416 , a handle 418 , and a trigger 420 . The fixed frame 416 has a substantially U-shape. Both ends of the fixed frame 416 in the longitudinal direction are fixed to the housing 400 .

[0182] The handle 418 is mounted on the upper portion of the fixed frame 416. The user can move the slope mower 4c by holding the handle 418 and pushing it forward.

[0183] The trigger 420 is rotatably mounted on the handle 418. The user can operate the trigger 420 by holding the handle 418 with his hand close to the handle 418. When the trigger 420 is operated, the motor 86 of the motor unit 10 is operated.

[0184] The working unit 408 includes a connecting portion 424, a transmission shaft 426, and a mowing blade 428. The connecting portion 424 connects the motor shaft 140 and the transmission shaft 426.

[0185] The transmission shaft 426 extends in the up-down direction. The transmission shaft 426 is integrated with the motor shaft 140, and the transmission shaft 426 rotates around a central axis 140a extending in the up-down direction.

[0186] The mowing blade 428 is fixed to the lower end of the transmission shaft 426. The mowing blade 428 is integrated with the transmission shaft 426, and the mowing blade 428 rotates around the central axis 140a, thereby cutting the grass.

[0187] (Effect)

[0188] The motor unit 10 of this embodiment is detachably mounted on the working unit 4 and operates the working unit 4. The motor unit 10 includes: a motor 86 having a motor shaft 140 extending in the front-rear direction (an example of the first direction) and operating the working unit 4; a control circuit board 196 operating the motor 86; a motor housing 84 supporting the motor 86; a main body housing 12 disposed outside the control circuit board 196 and the motor housing 84; a first fixing portion 148 capable of being fixed to the working unit 4; a first right vibration-proofing member 170 (an example of the first vibration-proofing member) disposed between the main body housing 12 and the motor housing 84; and a first left vibration-proofing member 176 (a second vibration-proofing member) disposed between the main body housing 12 and the motor housing 84. The first fixing portion 148 can be placed on the placement surface P1 when the motor unit 10 is placed on the placement surface P1, and is disposed substantially parallel to the motor shaft 140. When the motor unit 10 is placed on the placement surface P1, at least a portion of the first right vibration isolation member 170 and at least a portion of the first left vibration isolation member 176 are arranged at a position lower than the upper end of the motor 86 in the up-down direction orthogonal to the placement surface P1. When the motor unit 10 is viewed in the front-to-back direction, the motor 86 is arranged between the first right vibration isolation member 170 and the first left vibration isolation member 176.

[0189] According to the above configuration, at least a portion of the first right vibration-proofing member 170 and at least a portion of the first left vibration-proofing member 176 are arranged at a position lower than the upper end of the motor 86, and the first right vibration-proofing member 170 and the first left vibration-proofing member 176 are arranged to sandwich the motor 86. Thus, the first right vibration-proofing member 170 and the first left vibration-proofing member 176 are arranged to be symmetrical with respect to the motor 86. Thus, the vibration of the motor 86 can be sufficiently attenuated.

[0190] When the motor unit 10 is placed on the placement surface P1, the motor shaft 140 extends along the placement surface P1. When the motor unit 10 is placed on the placement surface P1, the first right vibration isolating member 170 and the first left vibration isolating member 176 are arranged below the central axis 140a of the motor shaft 140.

[0191] Generally, components of the motor unit 10 are often arranged in a space above the upper end of the motor 86. According to the above configuration, an empty space below the central axis 140a of the motor shaft 140 can be utilized.

[0192] Furthermore, when the motor unit 10 is placed on the placement surface P1 , the first right vibration isolating member 170 and the first left vibration isolating member 176 are arranged above the lower end of the motor 86 .

[0193] According to the above configuration, it is possible to utilize the vacant space between the central axis 140 a of the motor shaft 140 and the lower end of the motor 86 .

[0194] The first right vibration isolating member 170 is separated from an orthogonal plane P2 which is orthogonal to the placement plane P1 and includes the front-rear direction by a first distance. The first left vibration isolating member 176 is separated from the orthogonal plane P2 by a first distance.

[0195] According to the above configuration, the distance between the first right vibration-proofing component 170 and the orthogonal plane P2 is the same as the distance between the first left vibration-proofing component 176 and the orthogonal plane P2. Thus, the first right vibration-proofing component 170 and the first left vibration-proofing component 176 are arranged to be symmetrical with respect to the orthogonal plane P2. Thus, the vibration of the motor 86 can be further attenuated.

[0196] The position of the center of gravity G1 of the motor unit 10 in the front-rear direction is substantially the same as the center position of the first right vibration isolating member 170 and the center position of the first left vibration isolating member 176 in the front-rear direction.

[0197] According to the above configuration, the vibration of the motor 86 can be further attenuated.

[0198] In addition, the motor unit 10 further includes: a second right vibration-proofing member 172 (an example of a third vibration-proofing member) disposed between the main body housing 12 and the motor housing 84, and a second left vibration-proofing member 178 (an example of a fourth vibration-proofing member) disposed between the main body housing 12 and the motor housing 84. When the motor unit 10 is placed on the placement surface P1, at least a portion of the second right vibration-proofing member 172 and at least a portion of the second left vibration-proofing member 178 are disposed at a position more upward than the central axis 140a of the motor shaft 140. When the motor unit 10 is viewed in the front-rear direction, the motor 86 is disposed between the second right vibration-proofing member 172 and the second left vibration-proofing member 178.

[0199] According to the above configuration, the vibration of the motor 86 can be further attenuated compared to a configuration in which the motor unit 10 includes only the first right vibration isolating member 170 and the first left vibration isolating member 176 .

[0200] In addition, the second right vibration-isolating member 172 is arranged at a position on the same side as the first right vibration-isolating member 170 with respect to an orthogonal plane P2 which is orthogonal to the mounting plane P1 and includes the front-rear direction. The second left vibration-isolating member 178 is arranged at a position on the same side as the first left vibration-isolating member 176 with respect to the orthogonal plane P2. The distance between the first right vibration-isolating member 170 and the second right vibration-isolating member 172 and the distance between the first left vibration-isolating member 176 and the second left vibration-isolating member 178 are substantially the same.

[0201] According to the above configuration, the second right vibration isolating member 172 and the second left vibration isolating member 178 are arranged symmetrically with respect to the orthogonal plane P2 . This can further attenuate the vibration of the motor 86 .

[0202] The motor unit 10 further includes a plate member 92 fixed to the motor housing 84. The first right vibration isolating member 170 and the first left vibration isolating member 176 are fixed to the plate member 92 and the main body housing 12.

[0203] In the configuration in which the first right vibration isolating member 170 and the first left vibration isolating member 176 are directly fixed to the motor housing 84, the configuration of the motor housing 84 becomes complicated. According to the above configuration, the configuration of the motor housing 84 can be suppressed from becoming complicated.

[0204] Furthermore, the motor unit 10 further includes a second fixing portion 150 fixed to a working unit 4 of a different type from the working unit 4 fixed to the first fixing portion 148 .

[0205] According to the above configuration, the types of working units 4 that can use the motor unit 10 can be increased.

[0206] The motor unit 10 also includes a fan 88 fixed to the motor 86, a substrate housing 192 supporting a control circuit substrate 196, and a cylindrical vibration-proof member 104 disposed between the motor housing 84 and the substrate housing 192 and having a cylindrical shape. When the fan 88 rotates, air cools the control circuit substrate 196 and passes through the inside of the cylindrical vibration-proof member 104.

[0207] According to the above configuration, when the motor 86 vibrates, the cylindrical vibration-proof member 104 damps the vibration of the motor 86. In addition, air for cooling the control circuit board 196 passes through the inside of the cylindrical vibration-proof member 104. By using the cylindrical vibration-proof member 104, the vibration of the motor 86 can be suppressed with one component, and the control circuit board 196 can also be cooled.

[0208] In addition, the main body casing 12 includes: a first battery mounting portion 22, on which a first battery pack BP1 (an example of a first battery) that supplies power to the motor 86 is detachably mounted; and a second battery mounting portion 24, on which a second battery pack BP2 (an example of a second battery) that supplies power to the motor 86 is detachably mounted.

[0209] According to the above configuration, the output of the motor unit 10 can be increased or the operating time of the motor unit 10 can be prolonged.

[0210] Furthermore, when the motor unit 10 is viewed in the front-rear direction, the control circuit board 196 at least partially overlaps with the motor 86 .

[0211] According to the above configuration, compared with a configuration in which the control circuit board 196 is not at least partially adjacent to the motor 86 when the motor unit 10 is viewed in the front-rear direction, it is possible to suppress the motor unit 10 from becoming larger in a direction perpendicular to the front-rear direction.

[0212] The motor unit 10 of this embodiment is detachably mounted on the working unit 4 and operates the working unit 4. The motor unit 10 includes: a motor 86 having a motor shaft 140 extending in the front-rear direction (an example of the first direction) and operating the working unit 4; a control circuit board 196 operating the motor 86; a motor housing 84 supporting the motor 86; a main body housing 12 disposed outside the control circuit board 196 and the motor housing 84; a second fixing portion 150 fixed to the working unit 4; a first right vibration-proofing member 170 (an example of the first vibration-proofing member) disposed between the main body housing 12 and the motor housing 84; and a first left vibration-proofing member 176 (an example of the second vibration-proofing member) disposed between the main body housing 12 and the motor housing 84. The motor shaft 140 is substantially orthogonal to the second fixing portion 150. When the motor unit 10 is placed on the placement surface P1, at least a portion of the first right vibration isolation member 170 and at least a portion of the first left vibration isolation member 176 are arranged at a position lower than the upper end of the motor 86 in the up-down direction orthogonal to the placement surface P1. When the motor unit 10 is viewed in the front-to-back direction, the motor 86 is arranged between the first right vibration isolation member 170 and the first left vibration isolation member 176.

[0213] According to the above configuration, at least a portion of the first right vibration-proofing member 170 and at least a portion of the first left vibration-proofing member 176 are arranged at a position lower than the upper end of the motor 86, and the first right vibration-proofing member 170 and the first left vibration-proofing member 176 are arranged to sandwich the motor 86. Thus, the first right vibration-proofing member 170 and the first left vibration-proofing member 176 are arranged symmetrically with respect to the motor 86. Thus, the vibration of the motor 86 can be sufficiently attenuated.

[0214] When the motor unit 10 is placed on the placement surface P1, the motor shaft 140 extends along the placement surface P1. When the motor unit 10 is placed on the placement surface P1, the first right vibration isolating member 170 and the first left vibration isolating member 176 are arranged below the central axis 140a of the motor shaft 140.

[0215] Generally, components of the motor unit 10 are often arranged in a space above the upper end of the motor 86. According to the above configuration, an empty space below the central axis 140a of the motor shaft 140 can be utilized.

[0216] The first right vibration isolating member 170 is separated from an orthogonal plane P2 which is orthogonal to the placement plane P1 and includes the front-rear direction by a first distance. The first left vibration isolating member 176 is separated from the orthogonal plane P2 by a first distance.

[0217] According to the above configuration, the distance between the first right vibration-proof component 170 and the orthogonal plane P2 is the same as the distance between the first left vibration-proof component 176 and the orthogonal plane P2. Thus, the first right vibration-proof component 170 and the first left vibration-proof component 176 are configured to be symmetrical with respect to the orthogonal plane P2. When the motor 86 vibrates, the first right vibration-proof component 170 and the first left vibration-proof component 176 are deformed more evenly, for example. Accordingly, the vibration of the motor 86 can be further attenuated.

[0218] In addition, the main body casing 12 includes: a first battery mounting portion 22, on which a first battery pack BP1 (an example of a first battery) that supplies power to the motor 86 is detachably mounted; and a second battery mounting portion 24, on which a second battery pack BP2 (an example of a second battery) that supplies power to the motor 86 is detachably mounted.

[0219] According to the above configuration, the output of the motor unit 10 can be increased or the operating time of the motor unit 10 can be prolonged.

[0220] The motor unit 10 of this embodiment is detachably mounted on the operation unit 4 and operates the operation unit 4. The motor unit 10 includes: a motor 86 having a motor shaft 140 extending in the front-rear direction (an example of the first direction) and operating the operation unit 4; a control circuit board 196 operating the motor 86; a fan 88 fixed to the motor 86; a motor housing 84 supporting the motor 86; a substrate housing 192 supporting the control circuit board 196; a main body housing 12 disposed outside the motor housing 84 and the substrate housing 192; a fixing unit 90 fixed to the operation unit 4; and a cylindrical vibration-proof member 104 disposed between the motor housing 84 and the substrate housing 192 and having a cylindrical shape. When the fan 88 rotates, air cools the control circuit board 196 and passes through the inside of the cylindrical vibration-proof member 104.

[0221] According to the above configuration, when the motor 86 vibrates, the cylindrical vibration-proof member 104 damps the vibration of the motor 86. In addition, air for cooling the control circuit board 196 passes through the inside of the cylindrical vibration-proof member 104. By using the cylindrical vibration-proof member 104, the vibration of the motor 86 can be suppressed by using one component, and the control circuit board 196 can be cooled. Accordingly, the number of components of the motor unit 10 can be reduced.

[0222] The motor unit 10 further includes a plate member 92 fixed to the motor housing 84 , a support unit 100 supporting the substrate housing 192 , and a vibration-proof portion 94 (an example of a vibration-proof member) fixed to the plate member 92 and the support unit 100 .

[0223] According to the above configuration, the vibration of the motor 86 is attenuated by the cylindrical vibration-proof member 104 and the vibration-proof portion 94. This can suppress the vibration from being transmitted to the control circuit board 196.

[0224] Furthermore, when the motor unit 10 is viewed in the front-rear direction, the cylindrical vibration-isolating member 104 at least partially overlaps with the motor 86 .

[0225] According to the above configuration, compared with a configuration in which the cylindrical vibration-isolating member 104 does not at least partially overlap the motor 86 when the motor unit 10 is viewed in the front-rear direction, it is possible to suppress the motor unit 10 from becoming larger in a direction perpendicular to the front-rear direction.

[0226] In addition, the main body casing 12 includes: a first battery mounting portion 22, on which a first battery pack BP1 (an example of a first battery) that supplies power to the motor 86 is detachably mounted; and a second battery mounting portion 24, on which a second battery pack BP2 (an example of a second battery) that supplies power to the motor 86 is detachably mounted.

[0227] According to the above configuration, the output of the motor unit 10 can be increased or the operating time of the motor unit 10 can be prolonged.

[0228] (Second embodiment)

[0229] In the second embodiment, the differences from the first embodiment are described. Fig.34 As shown, in the second embodiment, the first battery mounting portion 22 and the second battery mounting portion 24 are arranged on the rear wall 20d of the storage portion 20. The first battery mounting portion 22 and the second battery mounting portion 24 are arranged side by side in the left-right direction. When the motor unit 10 is viewed in the front-back direction, the first battery mounting portion 22 and the second battery mounting portion 24 do not overlap.

[0230] The first battery pack BP1 is mounted on the first battery mounting portion 22 by sliding along the mounting direction D1, and is removed from the first battery mounting portion 22 by sliding along the removal direction D2 opposite to the mounting direction D1. The mounting direction D1 is a downward direction. The removal direction D2 is an upward direction. The second battery pack BP2 is mounted on the second battery mounting portion 24 by sliding along the mounting direction D1, and is removed from the second battery mounting portion 24 by sliding along the removal direction D2.

[0231] (Third embodiment)

[0232] In the third embodiment, the differences from the first embodiment are described. Fig.35 As shown, in the third embodiment, the first battery mounting portion 22 and the second battery mounting portion 24 are arranged on the left wall 20e of the storage portion 20. The first battery mounting portion 22 and the second battery mounting portion 24 are arranged side by side in the front-to-back direction. When the motor unit 10 is viewed in the left-right direction, the first battery mounting portion 22 and the second battery mounting portion 24 do not overlap.

[0233] The first battery pack BP1 is mounted on the first battery mounting portion 22 by sliding along the mounting direction D1, and is removed from the first battery mounting portion 22 by sliding along the removal direction D2 opposite to the mounting direction D1. The mounting direction D1 is a downward direction. The removal direction D2 is an upward direction. The second battery pack BP2 is mounted on the second battery mounting portion 24 by sliding along the mounting direction D1, and is removed from the second battery mounting portion 24 by sliding along the removal direction D2.

[0234] (Fourth embodiment)

[0235] In the fourth embodiment, the differences from the first embodiment are described. Fig.36 As shown, the first right vibration-proofing member 170 is arranged at a position more upward than the center of gravity G1 of the motor unit 10 and the central axis 140a of the motor shaft 140. The center of the first right vibration-proofing member 170 in the vertical direction is arranged at a position more downward than the upper end 86a of the motor 86. The upper end of the first right vibration-proofing member 170 is arranged at a position more upward than the upper end 86a of the motor 86. In the front-to-back direction, the position of the center of the first right vibration-proofing member 170 is substantially the same as the position of the center of gravity G1 of the motor unit 10.

[0236] The second right vibration-proofing member 172 and the third right vibration-proofing member 174 are arranged at a position lower than the center of gravity G1 and the central axis 140a of the motor unit 10. The second right vibration-proofing member 172 and the third right vibration-proofing member 174 are arranged at a position higher than the lower end 86b of the motor 86. In the front-back direction, the positions of the centers of the second right vibration-proofing member 172 and the third right vibration-proofing member 174 are substantially the same as the position of the center of gravity G1 of the motor unit 10.

[0237] 1st left vibration isolation member 176 (refer to Fig.21 ) in the front-to-back direction is substantially the same as the front-to-back direction position of the first right vibration-isolating member 170. The top-to-bottom direction position of the first left vibration-isolating member 176 is substantially the same as the top-to-bottom direction position of the first right vibration-isolating member 170. The second left vibration-isolating member 178 (see Fig.21 ) in the front-to-back direction is substantially the same as the front-to-back direction of the second right vibration-isolating member 172. The top-to-bottom direction of the second left vibration-isolating member 178 is substantially the same as the top-to-bottom direction of the second right vibration-isolating member 172. The third left vibration-isolating member 180 (see Fig.21 ) in the front-to-rear direction is substantially the same as the position of the third right vibration isolating member 174 in the front-to-rear direction. The position of the third left vibration isolating member 180 in the up-down direction is substantially the same as the position of the third right vibration isolating member 174 in the up-down direction.

[0238] (Fifth embodiment)

[0239] In the fifth embodiment, the differences from the first embodiment are described. Fig.37 As shown in FIG. 1 , the vibration-proofing unit 94 only includes a first right vibration-proofing member 170 and a first left vibration-proofing member 176. Fig.37 In order to facilitate understanding of the position of the first left vibration-isolating component 176, the outer surface of the first right vibration-isolating component 170 is given a symbol 176. The shape of the first right vibration-isolating component 170 of the fifth embodiment is different from the shape of the first right vibration-isolating component 170 of the first embodiment, and the shape of the first left vibration-isolating component 176 of the fifth embodiment is different from the shape of the first left vibration-isolating component 176 of the first embodiment.

[0240] The first right vibration-proofing component 170 has a triangular ring shape. In the front-to-back direction, the position of the center CP of the first right vibration-proofing component 170 is substantially the same as the position of the center of gravity G1 of the motor unit 10. The center CP of the first right vibration-proofing component 170 is arranged at a position that is more upward than the center of gravity G1 of the motor unit 10 and the center axis 140a of the motor shaft 140. The upper end of the first right vibration-proofing component 170 is arranged at a position that is more upward than the upper end 86a of the motor 86. The lower end of the first right vibration-proofing component 170 is arranged at a position that is more downward than the lower end 86b of the motor 86. At least a portion of the first right vibration-proofing component 170 is arranged at a position that is more downward than the upper end 86a of the motor 86.

[0241] The shape of the first left vibration isolating member 176 is substantially the same as the shape of the first right vibration isolating member 170. The position of the first left vibration isolating member 176 in the front-to-back direction is substantially the same as the position of the first right vibration isolating member 170 in the front-to-back direction. The position of the first left vibration isolating member 176 in the up-down direction is substantially the same as the position of the first right vibration isolating member 170 in the up-down direction.

[0242] (Variation Example)

[0243] The motor unit 10 according to one embodiment may include three or more battery mounting portions. In this case, three or more battery packs BP may be mounted on the main body casing 12 .

[0244] In the motor unit 10 according to one embodiment, the mounting direction D1 of the first battery pack BP1 may be different from the mounting direction D2 of the second battery pack BP2. Also, the removal direction D2 of the first battery pack BP1 may be different from the removal direction D2 of the second battery pack BP2.

[0245] In the motor unit 10 of the above-described embodiment, the first right vibration-isolating member 170, the second right vibration-isolating member 172, and the third right vibration-isolating member 174 are fixed to the right wall 154a of the plate member 92. In a modified example, the number of vibration-isolating members fixed to the right wall 154a of the plate member 92 is not limited to three, and may be two or less, or may be four or more.

[0246] In the motor unit 10 of the above-described embodiment, the first left vibration-isolating member 176, the second left vibration-isolating member 178, and the third left vibration-isolating member 180 are fixed to the left wall 154b of the plate member 92. In a modified example, the number of vibration-isolating members fixed to the left wall 154b of the plate member 92 is not limited to three, and may be two or less, or may be four or more.

Claims

1. A motor unit which is detachably mounted on an operating unit and causes the operating unit to operate, characterized in that: The motor unit comprises: a motor having a motor shaft extending along a first direction and causing the operation unit to operate; A control circuit substrate that enables the motor to operate; A motor housing, which supports the motor; a main body housing, which is arranged outside the control circuit substrate and the motor housing; a first fixing portion capable of being fixed to the operation unit; a first vibration-proof member disposed between the main body housing and the motor housing; as well as a second vibration-proof member disposed between the main body housing and the motor housing, When the motor unit is placed on a placement surface, the first fixing portion can be placed on the placement surface and is arranged substantially parallel to the motor shaft. When the motor unit is placed on the placement surface, at least a portion of the first vibration-isolating component and at least a portion of the second vibration-isolating component are arranged at a position lower than an upper end of the motor in a vertical direction perpendicular to the placement surface. When the motor unit is viewed in the first direction, the motor is arranged between the first vibration isolation member and the second vibration isolation member.

2. The motor unit according to claim 1, characterized in that When the motor unit is placed on the placement surface, the motor shaft extends along the placement surface. When the motor unit is placed on the placement surface, the first vibration isolation member and the second vibration isolation member are arranged below the central axis of the motor shaft.

3. The motor unit according to claim 2, characterized in that When the motor unit is placed on the placement surface, the first vibration isolation member and the second vibration isolation member are arranged at an upper side relative to a lower end of the motor.

4. The motor unit according to claim 2 or 3, characterized in that The first vibration-isolating member is spaced a first distance from an orthogonal plane that is orthogonal to the mounting surface and includes the first direction. The second vibration isolating member is spaced apart from the orthogonal plane by the first distance.

5. The motor unit according to any one of claims 2 to 4, characterized in that: The position of the center of gravity of the motor unit in the first direction is substantially the same as the center position of the first vibration isolation member in the first direction and the center position of the second vibration isolation member in the first direction.

6. The motor unit according to any one of claims 2 to 5, characterized in that: The motor unit further includes: a third vibration-proof member disposed between the main body housing and the motor housing, and a fourth vibration-proof member disposed between the main body housing and the motor housing. When the motor unit is placed on the placement surface, at least a portion of the third vibration-isolating member and at least a portion of the fourth vibration-isolating member are arranged: upwardly relative to a central axis of the motor shaft, When the motor unit is viewed in the first direction, the motor is arranged between the third vibration isolation member and the fourth vibration isolation member.

7. The motor unit according to claim 6, characterized in that The third vibration-isolating member is arranged at a position on the same side as the first vibration-isolating member with respect to an orthogonal plane that is orthogonal to the mounting surface and includes the first direction. The fourth vibration-isolating member is arranged at a position on the same side as the second vibration-isolating member with respect to the orthogonal plane. A distance between the first vibration-isolating member and the third vibration-isolating member and a distance between the second vibration-isolating member and the fourth vibration-isolating member are substantially the same.

8. The motor unit according to any one of claims 1 to 7, characterized in that: The motor unit further includes: a plate member fixed to the motor housing; The first vibration-isolating member and the second vibration-isolating member are fixed to the plate member and the main body case.

9. The motor unit according to any one of claims 1 to 8, characterized in that: The motor unit further includes a second fixing portion fixed to the working unit of a different type from the working unit fixed to the first fixing portion.

10. The motor unit according to any one of claims 1 to 9, characterized in that: The motor unit further comprises: a fan fixed to the motor; a substrate housing that supports the control circuit substrate; and a cylindrical vibration-proof member disposed between the motor housing and the substrate housing and having a cylindrical shape, When the fan rotates, air cools the control circuit board and passes through the inside of the cylindrical vibration-proof member.

11. The motor unit according to any one of claims 1 to 10, characterized in that: The main housing comprises: a first battery mounting portion on which a first battery for supplying power to the motor is detachably mounted; and A second battery mounting portion is provided on which a second battery for supplying power to the motor is detachably mounted.

12. The motor unit according to any one of claims 1 to 11, characterized in that: When the motor unit is viewed in the first direction, the control circuit board at least partially overlaps with the motor.

13. A motor unit which is detachably mounted on an operating unit and causes the operating unit to operate, characterized in that: The motor unit comprises: a motor having a motor shaft extending along a first direction and causing the operation unit to operate; A control circuit substrate that enables the motor to operate; A motor housing, which supports the motor; a main body housing, which is arranged outside the control circuit substrate and the motor housing; a second fixing portion fixed to the operation unit; a first vibration-proof member disposed between the main body housing and the motor housing; as well as a second vibration-proof member disposed between the main body housing and the motor housing, The motor shaft is substantially orthogonal to the second fixing portion. When the motor unit is placed on a placement surface, at least a portion of the first vibration-isolating component and at least a portion of the second vibration-isolating component are arranged at a position lower than an upper end of the motor in a vertical direction perpendicular to the placement surface. When the motor unit is viewed in the first direction, the motor is arranged between the first vibration isolation member and the second vibration isolation member.

14. The motor unit according to claim 13, characterized in that When the motor unit is placed on the placement surface, the motor shaft extends along the placement surface. When the motor unit is placed on the placement surface, the first vibration isolation member and the second vibration isolation member are arranged below the central axis of the motor shaft.

15. The motor unit according to claim 14, characterized in that The first vibration-isolating member is spaced a first distance from an orthogonal plane that is orthogonal to the mounting surface and includes the first direction. The second vibration isolating member is spaced apart from the orthogonal plane by the first distance.

16. The motor unit according to any one of claims 13 to 15, characterized in that: The main housing comprises: a first battery mounting portion on which a first battery for supplying power to the motor is detachably mounted; and A second battery mounting portion is provided on which a second battery for supplying power to the motor is detachably mounted.

17. A motor unit which is detachably mounted on an operating unit and causes the operating unit to operate, characterized in that: The motor unit comprises: a motor having a motor shaft extending along a first direction and causing the operation unit to operate; A control circuit substrate that enables the motor to operate; a fan fixed to the motor; A motor housing, which supports the motor; A substrate housing, which supports the control circuit substrate; a main body housing, which is arranged outside the motor housing and the substrate housing; a fixing unit fixed to the working unit; as well as a cylindrical vibration-proof member disposed between the motor housing and the substrate housing and having a cylindrical shape, When the fan rotates, air cools the control circuit board and passes through the inside of the cylindrical vibration-proof member.

18. The motor unit according to claim 17, characterized in that The motor unit further comprises: a plate member fixed to the motor housing; a supporting unit that supports the substrate housing; and A vibration-proof member is fixed to the plate member and the support unit.

19. The motor unit according to claim 17 or 18, characterized in that When the motor unit is viewed in the first direction, the cylindrical vibration-isolating member at least partially overlaps with the motor.

20. The motor unit according to any one of claims 17 to 19, characterized in that: The main housing comprises: a first battery mounting portion on which a first battery for supplying power to the motor is detachably mounted; and A second battery mounting portion is provided on which a second battery for supplying power to the motor is detachably mounted.

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