Work equipment

Abstract

To reduce a machine size.SOLUTION: In a dust collector 10 of a dust collecting apparatus 1, a motor 30 and a fan 38 are housed in a housing 12, the battery 22 is attached to the battery attachment part 12L of the housing 12; and power is supplied to the motor 30 from the battery 22. The battery 22 is disposed below the motor 30, and is disposed at a position with a vertical range thereof overlapping the housing 12. Specifically, an upper part of the battery 22 is disposed within a lower stepped part 12J formed at a rear part of the housing 12, and an upper part of the battery 22 and a fan housing part 12A of the housing 12 overlap each other in a front view. Thereby, size of the dust collector 10 can be reduced compared to a configuration in which the battery 22 is arranged at a position offset downward so that the entire vertical arrangement range of the battery 22 does not overlap the housing 12.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a working machine.

Background Art

[0002] The dust collector (working machine) described in Patent Document 1 below includes a dust collector (main body part) and a dust bag (dust collection part) attached to the dust collector. The dust collector has a fan case having a suction port and a discharge port, and a motor and a fan are accommodated in the fan case. In the dust collector, when the fan operates by driving the motor, an air flow flowing from the suction port to the discharge port is generated. Thereby, for example, dust generated during cutting work or the like can be sucked into the fan case from a hose connected to the suction port, and the dust sucked into the fan case can be discharged from the discharge port to the dust bag to collect dust in the dust bag.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the dust collector, for example, for the purpose of improving portability, a detachable battery pack (power supply unit) may be used as a power supply for supplying power to the motor. In this case, since the battery pack is attached to the fan case of the dust collector, the size of the dust collector including the battery pack tends to increase. Therefore, in the dust collector, it is desirable to have a structure that can reduce the size even when the battery pack is detachably attached.

[0005] In consideration of the above facts, an object of the present invention is to provide a working machine that can be downsized.

Means for Solving the Problems

[0006] One or more embodiments of the present invention include a main body having an intake port and an exhaust port, and a dust collection unit attached to the main body into which the airflow exhausted from the exhaust port flows, wherein the main body includes a drive unit having a drive shaft, a fan that operates by the driving force of the drive unit and generates the airflow from the intake port to the exhaust port, a housing that houses the drive unit and the fan and also has an intake port and an exhaust port, and a power supply unit mounted in the housing that supplies power to the drive unit, wherein the housing has a drive unit housing section that houses the drive unit, and a fan housing section that houses the fan, which is adjacent to the drive unit housing section in the axial direction of the drive shaft and has an outer diameter larger than that of the drive unit housing section with respect to the drive unit housing section, and the power supply unit is located below the drive unit and in the axial direction By sight This is a work machine positioned in a location that overlaps with the aforementioned fan housing.

[0007] One or more embodiments of the present invention are a work machine in which a direction perpendicular to the vertical direction is designated as the first direction, and a direction perpendicular to both the vertical direction and the first direction is designated as the second direction, the power supply unit is mounted to the housing from one side in the first direction, the housing has an exhaust section that extends from the outer periphery to one side in the second direction and has the exhaust port at its tip, and the dust collection unit is attached to the exhaust section.

[0008] One or more embodiments of the present invention are work machines in which a handle is provided on the housing above the drive unit, and the handle is positioned such that its vertical position overlaps with the housing.

[0009] One or more embodiments of the present invention are work machines in which the handle is positioned so as viewed from above that it overlaps with the power supply unit and the drive unit.

[0010] One or more embodiments of the present invention are work machines in which the handle comprises a pair of handle connecting portions extending upward from the housing and a gripping portion extending in the second direction, with both longitudinal ends connected to the handle connecting portions.

[0011] One or more embodiments of the present invention are work machines in which the entire range of the drive unit in the second direction is positioned to overlap with the gripping unit.

[0012] One or more embodiments of the present invention are work machines in which the entire arrangement range of the power supply unit in the second direction is positioned to overlap with the gripping unit.

[0013] One or more embodiments of the present invention are work machines in which a controller for controlling the drive unit is housed in the housing, and the controller is located on one or the other side of the drive unit in the second direction.

[0014] One or more embodiments of the present invention are work machines in which a frame portion constituting the lower end of the main body is provided on the lower side of the housing, and the frame portion surrounds the power supply unit from the other side in the first direction and from both sides in the second direction.

[0015] One or more embodiments of the present invention are work machines in which the power supply unit has an arrangement range in the vertical direction that overlaps with the fan housing unit. One or more embodiments of the present invention are ,before The power supply unit is a work machine that is positioned in a stepped portion of the housing defined on the outer circumference of the drive unit housing by the drive unit housing and the fan housing. [Effects of the Invention]

[0016] The above configuration of the work machine allows for miniaturization. [Brief explanation of the drawing]

[0017] [Figure 1] It is a front view seen from the front showing the dust collector according to the present embodiment. [Figure 2] It is a cross-sectional view seen from the right showing the state where a hose is attached to the intake pipe of the dust collector of the dust collector shown in FIG. 1. [Figure 3] It is a perspective view seen from the upper right obliquely of the dust collector of the dust collector shown in FIG. 1. [Figure 4] It is a partially cut-away front view seen from the front of the dust collector shown in FIG. 3. [Figure 5] It is a cross-sectional view seen from the right showing the inside of the dust collector shown in FIG. 3. [Figure 6] It is a partially cut-away plan view seen from the top of the dust collector shown in FIG. 3. [Figure 7] It is a rear view seen from the rear of the dust collector shown in FIG. 3. [Figure 8] It is a front view showing the cap of the dust collector shown in FIG. 3. [Figure 9] It is a cross-sectional view of a modified example of the cap shown in FIG. 8.

Embodiments for Carrying Out the Invention

[0018] Hereinafter, the dust collector 1 as a working machine according to the present embodiment will be described with reference to the drawings. The arrows UP, FR, and LH appropriately shown in the drawings indicate the upper side, the front side, and the left side of the dust collector 1, respectively. In the following description, when the vertical, front-rear, and left-right directions are used for explanation, unless otherwise specified, they indicate the vertical direction, the front-rear direction, and the left-right direction of the dust collector 1. Also, the front-rear direction corresponds to the first direction of the present invention, and the left-right direction corresponds to the second direction of the present invention.

[0019] As shown in Figure 1, the dust collector 1 comprises a dust collector 10 as the main body and a dust bag 70 as a dust collection unit attached to the dust collector 10. The dust collector 1 is connected to a cutting machine such as a circular saw by a hose 60 (see Figure 2) attached to the dust collector 10, and is configured to collect dust generated during cutting into the dust bag 70. As shown in Figures 3 to 7, the dust collector 10 is composed of a housing 12, a motor 30 and a fan 38 as drive units housed in the housing 12, a battery 22 as a power supply unit that supplies power to the motor 30, and a cap 50 and a hose 60 as lids attached to the housing 12. The components of the dust collector 10 will be described below.

[0020] (Regarding Housing 12) The housing 12 constitutes the outer casing of the dust collector 10. The housing 12 is formed in a generally rectangular box shape. The housing 12 is composed of a plurality of housing members, which are assembled together. The housing 12 includes a fan housing section 12A that constitutes the front end of the housing 12, and a motor housing section 12B (broadly speaking, an element that can be understood as a drive housing section) that constitutes the rear end of the housing 12. The motor housing section 12B is an example of a drive unit housing section, and the fan housing section 12A is an example of a fan housing section.

[0021] The fan housing section 12A is oriented with its thickness in the front-to-back direction and is formed in a substantially circular shape when viewed from the front. The interior of the fan housing section 12A is configured as a volute chamber 12C for housing the fan 38, which will be described later. The volute chamber 12C and the interior of the motor housing section 12B are separated by a partition wall 12D, and a communication hole 12E is formed through the partition wall 12D to connect the fan housing section 12A and the motor housing section 12B.

[0022] An intake pipe 12F, which serves as the intake section, is integrally formed in the fan housing section 12A. The intake pipe 12F is formed in a substantially cylindrical shape with its axial direction in the front-rear direction and extends forward from approximately the center of the front wall of the fan housing section 12A. As a result, the intake port 12F1, which is the tip opening of the intake pipe 12F, is open to the front, and the inside of the intake pipe 12F is in communication with the volute chamber 12C. An engagement groove 12F2, which engages with a cap 50 described later, is formed on the outer circumference of the tip side of the intake pipe 12F. The engagement groove 12F2 is formed in a concave shape that opens radially outward from the intake pipe 12F, extends along the circumferential direction of the intake pipe 12F, and is formed around the entire circumference of the intake pipe 12F.

[0023] An exhaust pipe 12G is integrally formed in the fan housing 12A. The exhaust pipe 12G is formed in a substantially cylindrical shape with its axial direction running horizontally and extends to the left from the upper end of the fan housing 12A. As a result, the exhaust port 12G1, which is the opening at the tip of the exhaust pipe 12G, is open to the left, and the inside of the exhaust pipe 12G is in communication with the volute chamber 12C. A dust bag 70 is attached to the exhaust pipe 12G and is positioned to the left of the dust collector 10. The dust bag 70 is a flexible bag with a filter or the like inside, and collects dust discharged from the exhaust pipe 12G into the dust bag 70. The dust bag 70 may be made of a rigid resin and formed in a substantially rectangular box shape.

[0024] The motor housing section 12B is formed in a roughly rectangular box shape. The vertical dimension of the motor housing section 12B is set to be smaller than the vertical dimension of the fan housing section 12A, and the horizontal dimension of the motor housing section 12B is set to be approximately the same as the horizontal dimension of the fan housing section 12A. Specifically, the upper end of the motor housing section 12B is positioned lower than the upper end of the fan housing section 12A, and the lower end of the motor housing section 12B is positioned higher than the lower end of the fan housing section 12A. That is, at the upper end of the housing 12, an upper step section 12H is formed, which is one step lower than the upper end of the fan housing section 12A, on the rear side of the fan housing section 12A, and at the lower end of the housing 12, a lower step section 12J is formed, which is one step higher than the lower end of the fan housing section 12A, on the rear side of the fan housing section 12A. A motor cover portion 12K is provided on the rear wall of the motor housing portion 12B, protruding to the rear at approximately the center in the left-right direction. The motor cover portion 12K is formed in a roughly bottomed cylindrical shape that is open to the front.

[0025] A battery mounting section 12L (see Figures 5 and 7) is provided at the lower end of the motor housing section 12B. The battery mounting section 12L is formed in a roughly U-shape, open to the rear when viewed from below. A battery terminal 20 (see Figures 5 and 7) is provided in the battery mounting section 12L, and the battery terminal 20 is electrically connected to a controller 36, which will be described later. A battery 22, which serves as a power source, is detachably mounted in the battery mounting section 12L. Specifically, the battery 22 is mounted in the battery mounting section 12L by sliding it from the rear to the front. The battery 22 has a connector (not shown) that is connected to the battery terminal 20, and power is supplied to the controller 36 and the motor 30 by the battery 22. When the battery 22 is mounted, the battery 22 is located on the lower side of the motor housing section 12B, and the upper part of the battery 22 is located within the lower stepped section 12J. In other words, the upper part of the battery 22's arrangement range in the vertical direction overlaps with the arrangement range of the fan housing 12A in the vertical direction. To put it another way, in a front view, the top of the battery 22 and the bottom end of the fan housing 12A overlap. Alternatively, the coordinates in which the battery 22 is positioned in the vertical direction partially overlap with the coordinates in which the fan housing 12A is positioned in the vertical direction. Furthermore, the lower part of the battery 22 is positioned to protrude below the housing 12 (fan housing 12A).

[0026] A frame portion 14 is provided that forms the lower part of the housing 12. The frame portion 14 is integrally formed with the motor housing portion 12B. The frame portion 14 is composed of a frame main body portion 14A and a pair of left and right frame connecting portions 14B. In plan view, the frame main body portion 14A is formed in a substantially U-shape that is open to the rear. Specifically, the frame main body portion 14A is composed of a pair of left and right side frame portions 14A1 that extend in the front-rear direction and a front frame portion 14A2 that connects the front ends of the side frame portions 14A1. The side frame portions 14A1 are located on the left and right outer sides of the lower part of the battery 22, and the front frame portion 14A2 is located on the front side of the lower part of the battery 22. As a result, the frame main body portion 14A surrounds the lower part of the battery 22 from both the left and right sides and the front side.

[0027] The frame connecting portion 14B extends upward from the middle of the side frame portion 14A1 in the front-rear direction and is connected to both sides of the motor housing portion 12B in the left-right direction. Mounting portions 14C that protrude downward are formed at both ends of the side frame portion 14A1 in the front-rear direction. When the dust collector 1 is in the dust collection operation, the mounting portions 14C are placed on the ground GR. The mounting portions 14C are also positioned below the battery 22. As a result, when the mounting portions 14C are placed on the ground GR, the battery 22 is positioned above the ground GR at a distance. Furthermore, the rear end of the motor cover portion 12K, the rear end of the battery 22, and the rear end of the frame portion 14 are set to be approximately the same in the front-rear direction.

[0028] A handle 16 is provided on the upper side of the motor housing 12B, and the handle 16 is integrally formed with the motor housing 12B. That is, the handle 16 is located within the upper stepped portion 12H of the housing 12 and is spaced apart at the rear of the fan housing 12A. When viewed from the rear, the handle 16 is formed in a substantially inverted U-shape that opens downwards. Specifically, the handle 16 is composed of a pair of left and right handle connecting portions 16A extending upward from both sides in the left-right direction of the motor housing 12B, and a gripping portion 16B that extends in the left-right direction and connects the upper ends of the handle connecting portions 16A. As a result, the gripping portion 16B is spaced apart at the upper side of the motor housing 12B, and when transporting the dust collector 10, the operator grips the gripping portion 16B. The upper end of the handle 16 is positioned slightly above the upper end of the housing 12 (fan housing section 12A), and most of the handle 16's vertical positioning range overlaps with the upper end of the fan housing section 12A. In addition, the entire positioning range of the battery 22 in the left-right direction overlaps with the entire gripping section 16B of the handle 16 (see Figure 7). Furthermore, the position of the handle 16 is set so that, when viewed from the left-right direction, the handle 16 is located approximately in the center of the battery 22 in the front-to-back direction.

[0029] An operation panel 18 for operating the dust collector 10 is provided in the longitudinal middle of the upper surface of the gripping portion 16B, and the operation panel 18 is configured to be pressable downwards. Inside the gripping portion 16B, below the operation panel 18, a switch mechanism (not shown) is provided, and the switch mechanism is equipped with a switch (not shown) that operates when the operation panel 18 is operated. The switch is electrically connected to the controller 36, and when the operation panel 18 is operated, an ON signal is output from the switch to the controller 36.

[0030] (Regarding motor 30) The motor 30 is housed within the motor housing 12B. Specifically, the motor 30 is positioned above the battery 22 and below the handle 16. More specifically, the motor 30's position in the left-right direction overlaps with the entire gripping portion 16B of the handle 16 (see Figure 7). In other words, in a plan view, the gripping portion 16B of the handle 16, the motor 30, and the battery 22 overlap. The motor 30 has a drive shaft 30A with its axial direction in the front-rear direction. The rear end of the drive shaft 30A is rotatably supported by a bearing 32 held in the motor cover 12K, and the front end of the drive shaft 30A is rotatably supported by a bearing 34 held in the partition wall 12D. The drive shaft 30A is located substantially coaxially with the intake pipe 12F, and the front end of the drive shaft 30A is inserted through a communication hole 12E and positioned within the volute chamber 12C of the fan housing 12A. The motor 30 is electrically connected to the controller 36 (see Figure 6), and the motor 30 is driven by the control of the controller 36. Specifically, when the motor 30 is driven, the drive shaft 30A rotates around its axis in one direction (towards arrow A in Figure 4). The controller 36 is housed in the motor housing 12B to the right of the motor 30.

[0031] (Regarding Fan 38) The fan 38 is housed in the volute chamber 12C of the housing 12. The fan 38 is configured as a so-called centrifugal fan. Specifically, the fan 38 consists of a fan base 38A and a plurality of impellers 38B. The fan base 38A is formed in a substantially disc shape with the front-to-back direction being the thickness direction. A mounting boss 38C is formed in the center of the fan base 38A, and the mounting boss 38C is formed in a substantially cylindrical shape that protrudes forward from the fan base 38A. The drive shaft 30A is inserted into the mounting boss 38C from the rear, and the mounting boss 38C is fixed to the drive shaft 30A by fixing bolts 40. In this way, the fan 38 is connected to the drive shaft 30A so that it can rotate integrally with it.

[0032] The impeller 38B extends radially outward from the mounting boss 38C of the fan base 38A and is formed in a plate shape with the circumferential direction of the fan base 38A as the thickness direction. That is, the impeller 38B protrudes forward from the fan base 38A. When viewed from the front, the impeller 38B is inclined toward the other side of the rotational direction of the drive shaft 30A as it extends radially outward from the fan base 38A, and is curved in a substantially arc shape. Multiple impellers 38B are arranged in a line at predetermined angles in the circumferential direction of the fan base 38A.

[0033] Furthermore, the fan 38 is positioned below the connection point with the exhaust pipe 12G in the fan housing section 12A. When the fan 38 rotates in one direction along with the drive shaft 30A of the motor 30, the rotation of the impeller 38B generates an airflow AR (see Figure 4) that flows in one direction circumferentially around the fan 38. Specifically, the airflow AR flows into the volute chamber 12C from the intake port 12F1 of the intake pipe 12F, and the airflow AR that has flowed into the volute chamber 12C is exhausted from the exhaust port 12G1 of the exhaust pipe 12G.

[0034] (Regarding Cap 50) As shown in Figures 2 to 6 and Figure 8, the cap 50 is attached to the intake pipe 12F of the housing 12 and is configured as a lid that opens and closes the intake port 12F1. The cap 50 is made of a conductive and flexible material. In this embodiment, the cap 50 is made of conductive rubber (a mixture of rubber material (EPDM) and a filler such as carbon black), and the resistance of the cap 50 is set to 10¹² ohms or less (preferably 10⁴ ohms or less).

[0035] The cap 50 comprises a mounting cylinder portion 52 attached to the intake pipe 12F of the housing 12, and a movable cap portion 54 that opens and closes the intake port 12F1 of the intake pipe 12F. The mounting cylinder portion 52 is formed in a substantially cylindrical shape with the front-rear direction as its axial direction. The front part of the intake pipe 12F is fitted into the rear part of the mounting cylinder portion 52 from the rear side, thereby attaching the mounting cylinder portion 52 to the intake pipe 12F. An engagement rib 52A is formed on the inner circumferential surface of the rear end side of the mounting cylinder portion 52. The engagement rib 52A extends along the circumferential direction of the mounting cylinder portion 52 and is formed around the entire circumference of the mounting cylinder portion 52. The engagement rib 52A is fitted into an engagement groove 12F2 of the intake pipe 12F, and the engagement rib 52A and the engagement groove 12F2 are engaged in the front-rear direction. This restricts the movement of the mounting cylinder portion 52 in the front-rear direction. Furthermore, a fixed-side engaging hook 52B is formed on the inner circumferential surface of the front end of the mounting cylinder portion 52, and the fixed-side engaging hook 52B extends around the entire circumference of the mounting cylinder portion 52.

[0036] The movable cap section 54 has a cap body 54B that is detachably attached to the front end of the mounting cylinder section 52, and the state of the cap 50 is switched by attaching or detaching the cap body 54B to the mounting cylinder section 52. Specifically, by attaching the cap body 54B to the mounting cylinder section 52, the cap 50 enters a closed state (shown in Figures 3 to 6) that closes the air intake port 12F1, and by removing the cap body 54B from the mounting cylinder section 52, the cap 50 enters an open state (shown in Figures 2 and 8) that opens the air intake port 12F1. Then, during dust collection work by the dust collector 10, the cap 50 is set to the open state, and when storing after the dust collection work is completed, the cap 50 is set to the closed state. The configuration of the movable cap section 54 will be described below using the cap 50 in the open state.

[0037] The movable cap portion 54 extends radially outward (more specifically, downward) from the front end portion of the mounting cylinder portion 52. The movable cap portion 54 is composed of a hinge portion 54A that forms the base end of the movable cap portion 54, a cap body 54B that forms the longitudinal middle portion of the movable cap portion 54, and a grounding knob portion 54C that forms the tip of the movable cap portion 54 as a grounding portion.

[0038] The hinge portion 54A is formed in a substantially rectangular plate shape with the left-right direction as the width direction and the up-down direction as the length direction, and extends downward from the front end portion of the mounting cylinder portion 52. The cap body 54B is formed in a substantially circular plate shape with the front-rear direction as the thickness direction, and the lower end of the hinge portion 54A is connected to the upper outer circumference of the cap body 54B. The outer diameter of the cap body 54B is substantially the same as the outer diameter of the mounting cylinder portion 52 and is set to be larger than the width dimension of the hinge portion 54A. A fitting cylinder portion 54B1 is formed on the outer circumference of the cap body 54B, and the fitting cylinder portion 54B1 is formed in a substantially cylindrical shape with the front-rear direction as the axial direction, and protrudes to the front of the cap body 54B. A movable side engaging hook 54B2 that protrudes radially outward is formed at the tip of the fitting cylinder portion 54B1, and the movable side engaging hook 54B2 extends around the entire circumference of the fitting cylinder portion 54B1.

[0039] When the cap 50 is closed, the hinge portion 54A is bent upward so that it forms a roughly U-shape when viewed from the side, and the cap body 54B is inverted in the front-to-back direction and attached to the front end of the mounting cylinder portion 52, closing the opening of the mounting cylinder portion 52. Specifically, the cap body 54B is positioned adjacent to the front side of the mounting cylinder portion 52, and the fitting cylinder portion 54B1 is fitted into the front end of the mounting cylinder portion 52. In addition, when the cap 50 is closed, the movable side engaging hook 54B2 is positioned adjacent to the rear side of the fixed side engaging hook 52B, and the movable side engaging hook 54B2 and the fixed side engaging hook 52B engage in the front-to-back direction. This maintains the closed state of the cap 50.

[0040] The grounding knob portion 54C, like the hinge portion 54A, is formed in a roughly rectangular plate shape with the left-right direction as the width and the up-down direction as the length, and extends downward from the lower outer circumference of the cap body 54B. The width dimension of the grounding knob portion 54C is set to be approximately the same as the width dimension of the hinge portion 54A. When the cap 50 is closed, the grounding knob portion 54C protrudes upward from the cap body 54B. This allows the operator to grasp the grounding knob portion 54C and switch to the cap 50 state.

[0041] Furthermore, the extension length L of the movable cap portion 54 (see Figures 2 and 8) is set to be longer than the distance H (see Figure 5) between the mounting cylinder portion 52 and the lower end of the frame portion 14 in the vertical direction. Therefore, when the dust collector 10 is placed on the ground GR during dust collection operation, the grounding knob portion 54C of the movable cap portion 54 comes into contact with the ground GR, causing the cap 50 to be grounded to the ground GR (see Figure 2). In other words, the cap 50 is configured to function as an earthing member that is grounded to the ground GR.

[0042] (Regarding hose 60) As shown in Figure 2, the hose 60 is formed in a substantially cylindrical shape with the front-to-back direction as its axis. One end of the hose 60 is connected to a cutting machine such as a circular saw (not shown). The other end of the hose 60 is fitted from the front into the mounting cylinder portion 52 of the open cap 50 and connected to the cap 50. As a result, the airflow AR generated by the rotation of the fan 38 draws the dust generated during the cutting process from the intake pipe 12F into the volute chamber 12C and discharges it from the exhaust port 12G1 into the dust bag 70.

[0043] (Effects and Benefits) During dust collection using the dust collection device 1 configured as described above, the cap body 54B is removed from the mounting cylinder 52, and the cap 50 is opened. One end of the hose 60 is attached to a cutting machine such as a circular saw, and the other end of the hose 60 is attached to the mounting cylinder 52 of the cap 50. Furthermore, the dust bag 70 is attached to the exhaust pipe 12G.

[0044] Then, when the operator operates the control panel 18, the motor 30 is driven, and the fan 38 rotates in one direction around the axis of the drive shaft 30A. As a result, the airflow AR flows from the intake port 12F1 of the intake pipe 12F into the volute chamber 12C. The airflow AR that has flowed into the volute chamber 12C flows in the circumferential direction of the fan 38 due to the rotation of the fan 38, and also flows into the exhaust pipe 12G, and is blown into the dust bag 70 from the exhaust port 12G1 of the exhaust pipe 12G. This allows dust generated during cutting and other processes to be collected in the dust bag 70.

[0045] In the dust collector 10, the motor 30 and fan 38 are housed in the housing 12, and the battery 22 is mounted in the battery mounting section 12L of the housing 12, supplying power to the motor 30. The battery 22 is positioned below the motor 30, and its vertical position overlaps with that of the housing 12. Specifically, the upper part of the battery 22 is positioned within the lower stepped section 12J formed at the rear of the housing 12, so that in a front view, the upper part of the battery 22 overlaps with the fan housing section 12A of the housing 12. Therefore, compared to a configuration in which the battery 22 is offset downwards so that its entire vertical position does not overlap with the housing 12, the size of the dust collector 10 can be reduced.

[0046] Furthermore, the battery 22 is mounted from the rear to the battery mounting section 12L of the housing 12. In addition, the exhaust pipe 12G of the housing 12 extends to the left from the upper end of the fan housing section 12A, and the exhaust port 12G1 of the exhaust pipe 12G is open to the left, and the dust bag 70 is attached to the exhaust pipe 12G. As a result, the dust bag 70 is positioned on the left side of the housing 12, and the battery 22 is mounted to the housing 12 from the rear. Consequently, interference between the battery 22 and the dust bag 70 can be suppressed, for example, when attaching or detaching the battery 22. Therefore, the dust bag 70 can be positioned in a location that does not affect the operation of attaching or detaching the battery 22.

[0047] Furthermore, the housing 12 is provided with a handle 16 above the motor 30, and the handle 16 is positioned so that its vertical range of placement overlaps with the housing 12. Specifically, the handle 16 is positioned within the upper stepped portion 12H of the housing 12, so that in a front view, the upper end of the fan housing portion 12A and the handle 16 overlap. Therefore, compared to a configuration in which the handle 16 is offset upwards so that its entire vertical range of placement does not overlap with the housing 12, the size of the dust collector 10 can be further reduced. In other words, compared to a configuration in which the upper stepped portion 12H of the housing 12 is omitted and the entire handle 16 protrudes above the housing 12, the size of the dust collector 10 can be reduced.

[0048] Furthermore, in a plan view, the handle 16 is positioned to overlap with the battery 22 and the motor 30. In other words, in the dust collector 10, the relatively heavy battery 22 and motor 30 are positioned below the handle 16. This allows for good balance of the dust collector 10 when it is lifted by gripping the handle 16. This improves the portability of the dust collector 10.

[0049] Furthermore, the handle 16 is composed of a pair of left and right handle connecting parts 16A extending upward from the motor housing part 12B, and a gripping part 16B extending in the left-right direction and connected to the pair of handle connecting parts 16A. That is, the direction in which the gripping part 16B, which is gripped by the operator, extends and the direction in which the battery 22 is attached and detached are perpendicular in a plan view. As a result, the direction of the operating force applied to the housing 12 when attaching or detaching the battery 22 and the direction in which the gripping part 16B extends are perpendicular in a plan view. Therefore, for example, when an operator grips the gripping part 16B with one hand and attaches or detaches the battery 22 with the other hand, the operator can attach or detach the battery 22 while properly supporting the gripping part 16B with the other hand. Thus, the workability when attaching or detaching the battery 22 can be improved.

[0050] Furthermore, the entire range of the motor 30 in the left-right direction is positioned to overlap with the gripping portion 16B of the handle 16. In other words, the motor 30 is positioned directly below the gripping portion 16B that the operator grips. This allows for even better balance when the dust collector 10 is lifted by gripping the handle 16. This further improves the portability of the dust collector 10.

[0051] Furthermore, the entire range of the battery 22 in the left-right direction is positioned to overlap with the gripping portion 16B of the handle 16. In other words, the battery 22 is positioned directly below the gripping portion 16B that the operator holds. This allows for even better balance when the dust collector 10 is lifted by gripping the handle 16. As a result, the portability of the dust collector 10 can be further improved.

[0052] Furthermore, the motor housing section 12B of the housing 12 houses a controller 36 that controls the motor 30, and the controller 36 is positioned to the right of the motor 30. This allows the controller 36 to be housed within the housing 12 while suppressing an increase in the vertical size of the housing 12.

[0053] Furthermore, a frame portion 14, which constitutes the lower end of the dust collector 10, is provided on the lower side of the housing 12, and the frame portion 14 surrounds the battery 22 from the front and both sides. This allows the frame portion 14, which is placed on the ground GR, to protect the battery 22 while ensuring that the battery 22 can be attached to and detached from the housing 12.

[0054] In this embodiment, the handle 16 extends in the left-right direction, but the handle 16 may also be extended in the front-rear direction and positioned within the upper stepped portion 12H of the housing 12.

[0055] Furthermore, in this embodiment, the controller 36 is located to the right of the motor 30, but the controller 36 may also be located to the left of the motor 30.

[0056] Furthermore, in this embodiment, the mounting cylinder portion 52 and the movable cap portion 54 are integrally formed in the cap 50. However, as shown in Figure 9, the mounting cylinder portion 52 and the movable cap portion 54 may be formed separately and connected to each other to integrate the cap 50. In this case, for example, the mounting cylinder portion 52 may be formed from a conductive resin (a resin material mixed with a filler such as carbon), and the movable cap portion 54 may be formed from conductive rubber. This makes it possible to increase the rigidity of the mounting cylinder portion 52, which is attached to the housing 12, for example.

[0057] Furthermore, the inner circumferential surface of the hose 60 in this embodiment may be made of a conductive material. This allows, for example, when the hose 60 attached to the mounting cylinder portion 52 of the cap 50 collects dust that has fallen onto the ground GR, the end of the hose 60 to come into contact with the ground GR, thereby discharging any static electricity accumulated on the hose 60. [Explanation of Symbols]

[0058] 1. Dust collector (work equipment) 10. Dust collector (main unit) 12 Housing 12F Intake pipe (intake section) 12F1 Air intake 12G1 Exhaust port 14 Frame section 16 handle 16A Handle connection part 16B Gripping part 22 Battery (Power Supply Unit) 30 Motor (drive unit) 36 Controllers 38 Fans 54C Grounding knob (grounding part) 70 Dust bag (dust collection section)

Claims

1. A main body having an air intake and an exhaust port, A dust collection unit is attached to the main body and into which the airflow exhausted from the exhaust port flows, Equipped with, The main body is, A drive unit having a drive shaft, A fan that operates by the driving force of the aforementioned drive unit and generates the airflow from the intake port to the exhaust port, A housing that houses the drive unit and the fan, and has an intake port and an exhaust port, A power supply unit, which is mounted in the housing and supplies power to the drive unit, It consists of, The aforementioned housing is A drive unit housing section that houses the aforementioned drive unit, A fan housing is adjacent to the drive unit housing in the axial direction of the drive shaft, and has an outer diameter larger than that of the drive unit housing, and houses the fan. It has, The power supply unit is located below the drive unit and in a position that overlaps with the fan housing when viewed in the axial direction.

2. The direction perpendicular to the vertical direction is defined as the first direction, and the direction perpendicular to both the vertical direction and the first direction is defined as the second direction. The power supply unit is mounted in the housing from one side in the first direction, The work machine according to claim 1, wherein the housing has an exhaust section formed thereon that extends from the outer circumference toward one side in the second direction and has the exhaust port at its tip, and the dust collection section is attached to the exhaust section.

3. The work machine according to claim 2, wherein the housing is provided with a handle on the upper side of the drive unit, and the handle is positioned such that its vertical arrangement range overlaps with the housing.

4. The work machine according to claim 3, wherein the handle is positioned so as to overlap with the power supply unit and the drive unit when viewed from above.

5. The aforementioned handle is A pair of handle connecting parts extending upward from the housing, A gripping portion extending in the second direction, with both longitudinal ends connected to the handle connecting portion, The work machine according to claim 4, comprising the above.

6. The work machine according to claim 5, wherein the entire range of the drive unit in the second direction is positioned to overlap with the gripping unit.

7. The work machine according to claim 5, wherein the entire arrangement range of the power supply unit in the second direction is positioned to overlap with the gripping unit.

8. The work machine according to claim 2, wherein the housing contains a controller for controlling the drive unit, and the controller is located on one or the other side of the drive unit in the second direction.

9. A work machine according to any one of claims 2 to 8, wherein a frame portion constituting the lower end of the main body is provided on the lower side of the housing, and the frame portion surrounds the power supply unit from the other side in the first direction and from both sides in the second direction.

10. The work machine according to claim 1, wherein the arrangement range of the power supply unit in the vertical direction overlaps with that of the fan housing unit.

11. The work machine according to claim 1, wherein the power supply unit is located on a stepped portion of the housing defined on the outer circumference of the drive unit housing by the drive unit housing and the fan housing.

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