Work equipment

Abstract

To improve workability.SOLUTION: In a dust collector 10 of a dust collecting device 1, a cap 50 is attached to an intake pipe 12F of a housing 12, and the cap 50 is configured to be switchable between an open state to open an intake port 12F1 of the intake pipe 12F and a closed state to close the intake port 12F1. With this, after dust collection work by the dust collecting device 1 is ended, by putting the cap 50 into the closed state to close the intake port 12F1 by the cap 50, dust remaining in the housing 12 (volute chamber 12C) can be inhibited from flowing to an outside of the housing 12 through the intake port 12F1. Therefore, it is possible to improve workability.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a work machine. [Background technology]

[0002] The dust collector (work machine) described in Patent Document 1 below includes a dust collector (main body) and a dust bag (dust collection unit) attached to the dust collector. The dust collector has a fan case with an inlet and an outlet, and a motor and fan are housed in the fan case. In the dust collector, when the fan is operated by driving the motor, an airflow is generated that flows from the inlet to the outlet. This allows dust generated during cutting processes, for example, to be sucked into the fan case through a hose connected to the inlet, and then the dust sucked into the fan case can be discharged from the outlet into the dust bag, where it is collected. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-9515 Summary of the Invention [Problem to be solved by the invention]

[0004] After the dust collection operation is completed, the hose is removed from the dust collector and the dust collector is stored. At this time, there is a possibility that the dust remaining inside the fan case will be discharged to the outside of the fan case through the suction port. In this case, the dust that has been discharged to the outside of the fan case must be collected and disposed of by the worker again. This may reduce workability.

[0005] SUMMARY OF THE INVENTION In consideration of the above, an object of the present invention is to provide a work machine that can improve workability. [Means for solving the problem]

[0006] One or more embodiments of the present invention include a dust collector including a main body having an air intake port and an air exhaust port, a dust collector attached to the main body and receiving airflow exhausted from the air exhaust port, a battery mounting section in which a battery is mounted; The main body portion comprises: Power is supplied from the battery a drive unit; a fan that is actuated by a 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 has the intake port and the exhaust port; and a fan that is provided in the housing, a hinge portion constituting a base end portion; and a cap body connected to the hinge portion, An open state in which the intake port is opened by an operator's operation. and the cap body A blocked state in which the intake port is blocked Between The work machine is configured to include a movable cap portion that is configured to be switchable.

[0007] In one or more embodiments of the present invention, a hose is attached to the air intake port, and the airflow is passed through the hose. The main body is configured to be placed on the ground. Cap body teeth , the above-mentioned When in the intake state, the air intake extends downward from the intake port and has a grounding portion at its tip. death, The main body is placed on the ground and the movable cap is The aforementioned In the open state, the ground contact portion abuts on the ground. By doing so, the charged static electricity can be discharged through the movable cap portion. It is a work machine. In one or more embodiments of the present invention, the cap body is made of a conductive material and is flexible.

[0008] One or more embodiments of the present invention are a work machine having a cap including a mounting tube portion, one end of which is attached to the housing and the other end of which the hose is attached, and the movable cap portion, wherein the extension length of the movable cap portion is longer than the distance in the vertical direction between the lower end of the main body portion and the mounting tube portion.

[0009] One or more embodiments of the present invention are implements in which the cap is constructed from a single piece.

[0010] One or more embodiments of the present invention are directed to a work machine in which the movable cap portion is made of a material in which carbon is mixed into a rubber material.

[0011] One or more embodiments of the present invention are directed to a work machine in which the resistance value of the movable cap portion is set to 10 12 ohms or less.

[0012] In one or more embodiments of the present invention, the movable cap portion is ,before The work machine is configured to include a disk-shaped cap body arranged between the hinge portion and the grounding portion, and a plate-shaped grounding portion that forms the tip of the movable cap portion, and the width dimensions of the hinge portion and the grounding portion are smaller than the diameter of the cap body.

[0013] One or more embodiments of the present invention are directed to a work machine in which the inner circumferential surface of the hose is made of a conductive material. One or more embodiments of the present invention include a main body having an air intake port and an exhaust port, and a dust collecting unit attached to the main body and into which airflow exhausted from the exhaust port flows, the main body including a drive unit, a fan that is actuated by a driving force of the drive unit and generates the airflow from the air intake port to the exhaust port, a housing that houses the drive unit and the fan and has the air intake port and the exhaust port, and a dust collecting unit that is provided in the housing and is switchable between an open state that opens the air intake port and a closed state that closes the air intake port. a movable cap portion attached to the intake port, a hose that serves as a passage for the air flow into the intake port, the main body portion configured to be able to be placed on the ground, the movable cap portion extending downward from the intake port when in the open state, having a grounding portion at its tip and having a cap body that can close the intake port, and when the main body portion is placed on the ground and the movable cap portion is in the open state, the grounding portion comes into contact with the ground, thereby enabling charged static electricity to be discharged via the movable cap portion. [Effects of the Invention]

[0014] According to the work machine having the above configuration, workability can be improved. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing a dust collecting device according to an embodiment of the present invention; [Figure 2] 2 is a cross-sectional view seen from the right side, showing a state in which a hose is attached to an intake pipe of the dust collector of the dust collecting device shown in FIG. 1. FIG. [Figure 3] 2 is a perspective view of the dust collector of the dust collecting device shown in FIG. 1, viewed obliquely from above on the right. FIG. [Figure 4] 4 is a partially cutaway front view of the dust collector shown in FIG. 3 as seen from the front side. [Figure 5] 4 is a cross-sectional view showing the inside of the dust collector shown in FIG. 3 as viewed from the right side. [Figure 6] 4 is a partially cutaway plan view of the dust collector shown in FIG. 3 as seen from above. [Figure 7] FIG. 4 is a rear view of the dust collector shown in FIG. 3 as seen from the rear side. [Figure 8]FIG. 4 is a front view showing the cap of the dust collector shown in FIG. 3. [Figure 9] FIG. 9 is a cross-sectional view of a modified example of the cap shown in FIG. 8. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, a dust collecting apparatus 1 as a work machine according to this embodiment will be described with reference to the drawings. Note that the arrows UP, FR, and LH shown as appropriate in the drawings respectively indicate the upper side, front side, and left side of the dust collecting apparatus 1. In the following description, when the up / down, front / rear, and left / right directions are used, they refer to the up / down, front / rear, and left / right directions of the dust collecting apparatus 1 unless otherwise specified.

[0017] As shown in Fig. 1, the dust collecting device 1 includes a dust collector 10 as a main body, and a dust bag 70 as a dust collecting unit attached to the dust collector 10. The dust collecting device 1 is connected to a cutting machine such as a circular saw by a hose 60 (see Fig. 2) attached to the dust collector 10, for example, and collects dust generated during cutting in the dust bag 70. As shown in Figs. 3 to 7, the dust collector 10 includes a housing 12, a motor 30 and a fan 38 as a driving unit 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 attached to the housing 12. Each component of the dust collector 10 will be described below.

[0018] (About Housing 12) The housing 12 forms the outer shell of the dust collector 10. The housing 12 is formed in a generally rectangular box shape overall. The housing 12 is made up of multiple housing members that are assembled together. The housing 12 includes a fan housing portion 12A that forms the front end of the housing 12, and a motor housing portion 12B (broadly speaking, an element that can be understood as a drive housing portion) that forms the rear portion of the housing 12. The motor housing portion 12B is an example of a drive portion accommodating portion, and the fan housing portion 12A is an example of a fan accommodating portion.

[0019] The fan housing section 12A has a thickness direction extending in the front-to-rear direction and is formed in a substantially circular shape when viewed from the front, with the interior of the fan housing section 12A configured as a volute chamber 12C for accommodating a 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 that communicates between the fan housing section 12A and the motor housing section 12B is formed through the partition wall 12D.

[0020] An intake pipe 12F serving as an intake section is integrally formed with the fan housing section 12A. The intake pipe 12F is formed in a generally cylindrical shape with its axial direction aligned in the front-to-rear direction and extends forward from approximately the center of the front wall of the fan housing section 12A. As a result, an intake port 12F1, which is an opening at the tip of the intake pipe 12F, is open to the front, and the interior of the intake pipe 12F communicates with the volute chamber 12C. An engagement groove 12F2 is formed in the outer periphery of the tip side of the intake pipe 12F to engage with a cap 50, which will be described later. The engagement groove 12F2 is formed in a concave shape that opens radially outward of the intake pipe 12F, extends circumferentially of the intake pipe 12F, and is formed around the entire circumference of the intake pipe 12F.

[0021] An exhaust pipe 12G serving as an exhaust section is integrally formed with the fan housing section 12A. The exhaust pipe 12G is formed in a generally cylindrical shape with its axis extending in the left-right direction and extends leftward from the upper end of the fan housing section 12A. As a result, an exhaust port 12G1, which is an opening at the tip of the exhaust pipe 12G, is open to the left, and the interior of the exhaust pipe 12G communicates with the volute chamber 12C. A dust bag 70 is attached to the exhaust pipe 12G and is disposed on the left side of the dust collector 10. The dust bag 70 is a flexible bag having a filter or the like therein, and collects dust discharged from the exhaust pipe 12G in the dust bag 70. The dust bag 70 may be made of hard resin and shaped like a generally rectangular box.

[0022] The motor housing portion 12B is formed in a generally rectangular box shape. The vertical dimension of the motor housing portion 12B is smaller than the vertical dimension of the fan housing portion 12A, and the left-right dimension of the motor housing portion 12B is generally the same as the left-right dimension of the fan housing portion 12A. Specifically, the upper end of the motor housing portion 12B is located below the upper end of the fan housing portion 12A, and the lower end of the motor housing portion 12B is located above the lower end of the fan housing portion 12A. That is, an upper step portion 12H is formed at the upper end of the housing 12, behind the fan housing portion 12A, and is one step lower than the upper end of the fan housing portion 12A. A lower step portion 12J is formed at the lower end of the housing 12, behind the fan housing portion 12A, and is one step higher than the lower end of the fan housing portion 12A. A motor cover portion 12K is provided on the rear wall of the motor housing portion 12B at approximately the center in the left-right direction, protruding rearward, and the motor cover portion 12K is formed in a generally cylindrical shape with a bottom that is open to the front.

[0023] A battery mounting portion 12L (see FIGS. 5 and 7) is provided at the lower end of the motor housing portion 12B. The battery mounting portion 12L is formed in a generally U-shape that opens to the rear when viewed from below. A battery terminal 20 (see FIGS. 5 and 7) is provided in the battery mounting portion 12L, and the battery terminal 20 is electrically connected to a controller 36 (described later). A battery 22 serving as a power supply is detachably attached to the battery mounting portion 12L. Specifically, the battery 22 slides from the rear side to the front side of the battery mounting portion 12L to be attached to the battery mounting portion 12L. The battery 22 has a connector (not shown) that connects to the battery terminal 20, and power is supplied from the battery 22 to the controller 36 and the motor 30. When the battery 22 is attached, the battery 22 is disposed below the motor housing portion 12B, and an upper portion of the battery 22 is disposed within the lower step portion 12J. That is, the upper part of the arrangement range of the battery 22 in the vertical direction overlaps with the arrangement range of the fan housing portion 12A in the vertical direction. In other words, the upper part of the battery 22 overlaps with the lower end of the fan housing portion 12A in a front view. Alternatively, the coordinates at which the battery 22 is arranged in the vertical direction partially overlap with the coordinates at which the fan housing portion 12A is arranged in the vertical direction. Furthermore, the lower part of the battery 22 is arranged in a position that protrudes downward from the housing 12 (fan housing portion 12A).

[0024] The housing 12 includes a frame portion 14 that forms the lower side of the housing. The frame portion 14 is integrally formed with the motor housing portion 12B. The frame portion 14 includes a frame main body portion 14A and a pair of left and right frame connecting portions 14B. In a plan view, the frame main body portion 14A is formed in a generally U-shape that is open to the rear. Specifically, the frame main body portion 14A includes 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 disposed on the outer lateral sides of the lower portion of the battery 22, and the front frame portion 14A2 is disposed in front of the lower portion of the battery 22. As a result, the frame main body portion 14A surrounds the lower portion of the battery 22 from both the left and right directions and from the front.

[0025] The frame connecting portion 14B extends upward from a central portion of the side frame portion 14A1 in the front-rear direction and is connected to both left-right sides of the motor housing portion 12B. Mounting portions 14C protruding downward are formed at both front-rear end portions of the side frame portion 14A1. The mounting portions 14C are placed on the ground GR when the dust collecting device 1 is in dust collection operation. The mounting portions 14C are positioned below the battery 22. Thus, when the mounting portion 14C is placed on the ground GR, the battery 22 is positioned above and spaced apart from the ground GR. The rear ends of the motor cover portion 12K, the battery 22, and the frame portion 14 are positioned so that their respective front-rear positions are substantially aligned.

[0026] A handle 16 is provided on the upper side of the motor housing portion 12B and is integrally formed with the motor housing portion 12B. That is, the handle 16 is disposed within the upper step portion 12H of the housing 12 and spaced apart from the rear of the fan housing portion 12A. When viewed from the rear, the handle 16 is formed in a generally inverted U shape that opens downward. Specifically, the handle 16 includes a pair of left and right handle connecting portions 16A extending upward from both left and right sides of the motor housing portion 12B, and a grip portion 16B extending laterally and connecting the upper ends of the handle connecting portions 16A. As a result, the grip portion 16B is spaced apart from the upper side of the motor housing portion 12B, and an operator can grasp the grip portion 16B when transporting the dust collector 10, for example. The upper end of the handle 16 is located slightly above the upper end of the housing 12 (fan housing portion 12A), and most of the range of the handle 16 in the vertical direction overlaps with the upper end of the fan housing portion 12A. Also, the entire range of the battery 22 in the left-right direction overlaps with the entire grip portion 16B of the handle 16 (see FIG. 7). Furthermore, the position of the handle 16 is set so that the handle 16 is located approximately in the center of the battery 22 in the front-rear direction when viewed from the left-right direction.

[0027] An operation panel 18 for operating the dust collector 10 is provided at the longitudinal middle portion of the upper surface of the grip portion 16B, and the operation panel 18 is configured to be operable by pressing downward. A switch mechanism (not shown) is provided below the operation panel 18 inside the grip portion 16B, and the switch mechanism has a switch (not shown) that is operated when the operation panel 18 is operated. The switch is electrically connected to the controller 36, and an ON signal is output from the switch to the controller 36 when the operation panel 18 is operated.

[0028] (Regarding motor 30) The motor 30 is housed within the motor housing portion 12B. That is, the motor 30 is disposed above the battery 22 and below the handle 16. More specifically, the motor 30 is disposed in a position where its left-right range overlaps the entire grip portion 16B of the handle 16 (see FIG. 7). In other words, the grip portion 16B of the handle 16, the motor 30, and the battery 22 overlap in a plan view. The motor 30 has a drive shaft 30A whose axial direction is the front-to-rear direction. The rear end of the drive shaft 30A is rotatably supported by a bearing 32 held in the motor cover portion 12K, and the front end portion of the drive shaft 30A is rotatably supported by a bearing 34 held in the partition wall 12D. The drive shaft 30A is positioned approximately coaxially with the intake pipe 12F, and the front end of the drive shaft 30A is inserted through the communication hole 12E and disposed within the volute chamber 12C of the fan housing portion 12A. The motor 30 is electrically connected to a controller 36 (see FIG. 6), and is driven under the control of the controller 36. Specifically, when the motor 30 is driven, the drive shaft 30A rotates around its own axis in one direction (the direction of arrow A in FIG. 4). The controller 36 is housed in the motor housing portion 12B on the right side of the motor 30.

[0029] (About Fan 38) The fan 38 is accommodated in the volute chamber 12C of the housing 12. The fan 38 is configured as a so-called centrifugal fan. Specifically, the fan 38 includes a fan base 38A and multiple impellers 38B. The fan base 38A is formed in a generally circular plate shape with its thickness extending in the front-to-rear direction. A mounting boss 38C is formed in the center of the fan base 38A. The mounting boss 38C is formed in a generally cylindrical shape that protrudes forward from the fan base 38A. The drive shaft 30A is inserted into the mounting boss 38C from the rear side, and the mounting boss 38C is fixed to the drive shaft 30A by a fixing bolt 40. This connects the fan 38 to the drive shaft 30A so as to be rotatable together with it.

[0030] The impeller 38B extends from the mounting boss 38C radially outward from the fan base 38A and is formed like a plate with its thickness direction aligned with the circumferential direction of the fan base 38A. That is, the impeller 38B protrudes forward from the fan base 38A. When viewed from the front, the impeller 38B inclines toward the other side in the rotation direction of the drive shaft 30A as it extends radially outward from the fan base 38A and is curved in a generally arc-like shape. The multiple impellers 38B are arranged side by side at predetermined angular intervals around the circumferential direction of the fan base 38A.

[0031] Fan 38 is disposed below the portion of fan housing portion 12A where it is connected to exhaust pipe 12G. When fan 38 rotates in one direction together with drive shaft 30A of motor 30, the rotation of impeller 38B generates airflow AR (see FIG. 4) that flows toward one circumferential side of fan 38. Specifically, airflow AR flows from intake port 12F1 of intake pipe 12F into volute chamber 12C, and the airflow AR that has flowed into volute chamber 12C is exhausted from exhaust port 12G1 of exhaust pipe 12G.

[0032] (About Cap 50) As shown in Figures 2 to 6 and 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 rubber material (EPDM) mixed with a filler such as carbon black), and the resistance of the cap 50 is set to 10 to the power of 12 ohms or less (preferably 10 to the power of 4 ohms or less).

[0033] The cap 50 includes a mounting tubular portion 52 that is 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 tubular portion 52 is formed in a generally cylindrical shape with its axial direction aligned in the front-to-rear direction. The front portion of the intake pipe 12F is fitted into the rear portion of the mounting tubular portion 52 from the rear side, thereby attaching the mounting tubular portion 52 to the intake pipe 12F. An engagement rib 52A is formed on the inner peripheral surface of the rear end of the mounting tubular portion 52. The engagement rib 52A extends circumferentially around the mounting tubular portion 52 and is formed around the entire circumference of the mounting tubular 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-to-rear direction. This limits movement of the mounting tubular portion 52 in the front-to-rear direction. In addition, a fixed side engagement hook 52B that protrudes radially inward is formed on the inner surface of the front end of the mounting tube portion 52, and the fixed side engagement hook 52B extends around the entire circumference of the mounting tube portion 52.

[0034] The movable cap portion 54 has a cap body 54B that is detachably attached to the front end of the mounting tube portion 52. The state of the cap 50 is changed by attaching or detaching the cap body 54B to or from the mounting tube portion 52. Specifically, by attaching the cap body 54B to the mounting tube portion 52, the cap 50 is placed in a closed state (the state shown in FIGS. 3 to 6) in which the air intake port 12F1 is closed. By removing the cap body 54B from the mounting tube portion 52, the cap 50 is placed in an open state (the state shown in FIGS. 2 and 8) in which the air intake port 12F1 is open. The cap 50 is placed in the open state during dust collection using the dust collector 10, and is placed in the closed state during storage after the dust collection operation is completed. The configuration of the movable cap portion 54 will be described below using the cap 50 in the open state.

[0035] 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 includes a hinge portion 54A that forms the base end of the movable cap portion 54, a cap body 54B that forms the longitudinal intermediate portion of the movable cap portion 54, and a ground knob portion 54C that serves as a ground portion and forms the tip end of the movable cap portion 54.

[0036] The hinge portion 54A is formed in a generally rectangular plate shape with its width direction in the left-right direction and its length direction in the up-down direction, and extends downward from the front end of the mounting tube portion 52. The cap body 54B is formed in a generally circular plate shape with its thickness direction in the front-rear direction, and the lower end of the hinge portion 54A is connected to the outer periphery of the upper end of the cap body 54B. The outer diameter of the cap body 54B is generally the same as the outer diameter of the mounting tube portion 52 and is set larger than the width dimension of the hinge portion 54A. A fitting tube portion 54B1 is formed on the outer periphery of the cap body 54B. The fitting tube portion 54B1 is formed in a generally cylindrical shape with its axial direction in the front-rear direction and protrudes to the front of the cap body 54B. A movable side engagement hook 54B2 protruding radially outward is formed at the tip of the fitting tube portion 54B1, and the movable side engagement hook 54B2 extends around the entire circumference of the fitting tube portion 54B1.

[0037] When the cap 50 is in the closed state, the hinge portion 54A is bent upward to form a generally U-shape in side view, and the cap body 54B is inverted in the front-to-rear direction and attached to the front end of the mounting tube portion 52 to close the opening of the mounting tube portion 52. Specifically, the cap body 54B is disposed adjacent to the front side of the mounting tube portion 52, and the fitting tube portion 54B1 is fitted into the front end of the mounting tube portion 52. Furthermore, when the cap 50 is in the closed state, the movable-side engagement hook 54B2 is disposed adjacent to the rear side of the fixed-side engagement hook 52B, and the movable-side engagement hook 54B2 and the fixed-side engagement hook 52B are engaged in the front-to-rear direction. This maintains the closed state of the cap 50.

[0038] Like the hinge portion 54A, the grounding knob portion 54C is formed in a generally rectangular plate shape with a width in the left-right direction and a length in the up-down direction, and extends downward from the outer periphery of the lower end of the cap body 54B. The width of the grounding knob portion 54C is set to be generally the same as the width of the hinge portion 54A. When the cap 50 is in the closed state, the grounding knob portion 54C protrudes upward from the cap body 54B. This allows an operator to grasp the grounding knob portion 54C and switch the cap 50 to the closed state.

[0039] Furthermore, the extension length L (see FIGS. 2 and 8) of the movable cap portion 54 is set to be longer than the separation distance H (see FIG. 5) between the mounting tube portion 52 and the lower end of the frame portion 14 in the up-down direction. Therefore, when the dust collector 10 is placed on the ground GR during dust collection operation of the dust collector 10, the grounding knob portion 54C of the movable cap portion 54 abuts against the ground GR, and the cap 50 is grounded to the ground GR (see FIG. 2). In other words, the cap 50 is configured to function as an earth member that is grounded to the ground GR.

[0040] (About Hose 60) 2, the hose 60 is formed in a generally cylindrical shape with its axial direction extending in the front-to-rear direction. One end of the hose 60 is connected to a cutting machine (not shown), such as a circular saw. The other end of the hose 60 is fitted from the front into the mounting tubular portion 52 of the cap 50 when it is in the open state, and is connected to the cap 50. As a result, airflow AR generated by the rotation of the fan 38 sucks dust generated during cutting from the intake pipe 12F into the volute chamber 12C and discharges it into the dust bag 70 through the exhaust port 12G1.

[0041] (Action and effect) When performing dust collection using the dust collecting device 1 configured as described above, the cap body 54B is removed from the mounting tube portion 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 tube portion 52 of the cap 50. Furthermore, a dust bag 70 is attached to the exhaust pipe 12G.

[0042] When the operator operates the operation panel 18, the motor 30 is driven, and the fan 38 rotates in one direction around 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 is then flowed into the exhaust pipe 12G and blown out from the exhaust port 12G1 of the exhaust pipe 12G into the dust bag 70. As a result, dust generated during cutting and other processes can be collected in the dust bag 70.

[0043] After the dust collection operation by the dust collector 1 is completed, the hose 60 is removed from the dust collector 10 to disconnect the dust collector 10 from a cutting machine such as a circular saw. At this time, there is a possibility that dust remaining in the volute chamber 12C of the dust collector 10 will be discharged from the intake port 12F1 to the outside of the housing 12. If the dust is discharged from the intake port 12F1 to the outside of the housing 12, the worker will need to collect and dispose of the discharged dust again, which reduces workability.

[0044] Here, a cap 50 is attached to the intake pipe 12F of the housing 12, and the cap 50 is configured to be switchable between an open state that opens the intake port 12F1 of the intake pipe 12F and a closed state that closes the intake port 12F1. As a result, after the dust collection operation by the dust collector 1 is completed, the cap 50 is put into the closed state and the intake port 12F1 is closed with the cap 50, thereby preventing dust remaining in the housing 12 (volute chamber 12C) from flowing out of the housing 12 through the intake port 12F1. This improves workability.

[0045] The cap 50 is made of conductive rubber. During dust collection operations, the cap 50 is opened and the frame 14 is placed on the ground GR. At this time, the grounding knob 54C of the cap 50 abuts the ground GR. This allows the cap 50 to discharge static electricity that builds up on the dust collector 10 during dust collection operations. During dust collection operations, static electricity builds up on the cap 50 due to friction between the hose 60 and the cap 50, and the cap 50 is charged with static electricity. However, as described above, during dust collection operations, the cap 50 is opened and the grounding knob 54C of the cap 50 abuts the ground GR. This means that the cap 50, made of conductive rubber, is grounded. This allows the cap 50, which closes the intake port 12F1, to discharge static electricity that builds up on the dust collector 10 during dust collection operations. This allows static electricity to be discharged without the need for a separate grounding member for discharging static electricity. This contributes to reducing the cost of the dust collecting device 1.

[0046] Furthermore, the cap 50 is made of conductive rubber, which allows the cap 50 to be manufactured relatively inexpensively, further contributing to reducing the cost of the dust collecting device 1.

[0047] The cap 50 is configured to include a mounting tubular portion 52 that is attached to the intake pipe 12F of the housing 12, and a movable cap portion 54 that extends downward from the mounting tubular portion 52 when the cap 50 is in an open state. The extension length L of the movable cap portion 54 is set to be longer than the vertical distance H between the lower end of the frame portion 14 and the mounting tubular portion 52. This allows the movable cap portion 54 to be flexibly deformed while the ground knob portion 54C of the movable cap portion 54 abuts against the ground GR during dust collection operation. Therefore, the movable cap portion 54 can be kept in good contact with the ground GR during dust collection operation.

[0048] Furthermore, the cap 50 is made of a single member. That is, the mounting cylinder portion 52 and the movable cap portion 54 are integrally formed. This allows the cap 50 to be manufactured more inexpensively than when the mounting cylinder portion 52 and the movable cap portion 54 are formed as separate bodies. This effectively reduces the cost of the dust collecting device 1.

[0049] The movable cap 54 includes a plate-shaped hinge 54A forming the base end of the movable cap 54, a plate-shaped ground knob 54C forming the tip end of the movable cap 54, and a disk-shaped cap body 54B detachably attached to the front end of the mounting tube 52. The widths of the hinge 54A and the ground knob 54C are set smaller than the diameter of the cap body 54B. This allows the hinge 54A and the ground knob 54C to be flexibly deformed while ensuring the rigidity of the cap body 54B when the cap 50 is in the open state. As a result, when the cap 50 is in the open state, the hinge 54A and the ground knob 54C can be flexibly deformed to bring the movable cap 54 into contact with the ground GR. When the cap 50 is in the closed state, the hinge 54A can be bent to attach the cap body 54B to the mounting tube 52.

[0050] In the present embodiment, the mounting tube portion 52 and the movable cap portion 54 are integrally formed in the cap 50. However, as shown in Fig. 9, the mounting tube portion 52 and the movable cap portion 54 may be formed separately and then connected to form the cap 50 as an integrated unit. In this case, for example, the mounting tube portion 52 may be formed from a conductive resin (resin material mixed with a filler such as carbon) and the movable cap portion 54 may be formed from a conductive rubber. This may increase the rigidity of the mounting tube portion 52 when it is attached to the housing 12, for example.

[0051] The inner circumferential surface of hose 60 in this embodiment may be made of a conductive material. As a result, for example, when dust that has fallen to the ground GR is collected by hose 60 attached to mounting tube portion 52 of cap 50, the end of hose 60 abuts against the ground GR, thereby discharging static electricity charged in hose 60. [Explanation of symbols]

[0052] 1 Dust collector (working equipment) 10 Dust collector (main body) 12 Housing 12F1 air intake 12G1 exhaust port 30 Motor (drive unit) 38 fans 50 caps 52 Mounting tube 54 Movable cap part 54A Hinge part 54B Cap body 54C Grounding knob (grounding part) 60 hose 70 Dust bag (dust collection part) GR ground H: Vertical distance between the bottom end of the main body and the mounting tube L: Extension length of the movable cap

Claims

1. a main body having an intake port and an exhaust port; a dust collecting unit attached to the main body and into which the airflow exhausted from the exhaust port flows; a battery mounting section in which a battery is mounted; Equipped with The main body portion is a drive unit to which power is supplied from the battery; a fan that is actuated by the driving force of the driving 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 the intake port and the exhaust port; a movable cap portion that is provided on the housing and includes a hinge portion that forms a base end portion, and a cap body that is connected to the hinge portion, and that is configured to be switchable by an operator between an open state in which the air intake port is open and a closed state in which the cap body closes the air intake port; A work machine comprising:

2. a hose that serves as a passage for the air flow flowing into the air intake is attached to the air intake; The main body is configured to be able to be placed on the ground, the cap body extends downward from the intake port in the open state and has a grounding portion at a tip end thereof; 2. The work machine according to claim 1, wherein when the main body is placed on the ground and the movable cap is in the open state, the grounding portion comes into contact with the ground, thereby discharging charged static electricity through the movable cap.

3. A work machine as described in Claim 2, wherein the cap body is formed from a conductive material and is flexible.

4. A cap including a mounting tube portion having one end attached to the housing and the other end to which the hose is attached, and the movable cap portion, 3. The work machine according to claim 2, wherein the extension length of the movable cap portion is longer than the distance between the lower end of the main body portion and the mounting tube portion in the vertical direction.

5. A work machine as described in Claim 4, wherein the cap is made of a single member.

6. A work machine as described in Claim 4, wherein the movable cap portion is made of a material in which carbon is mixed with rubber.

7. A work machine as described in Claim 4, wherein the resistance value of the movable cap portion is set to 10 to the 12th power ohms or less.

8. The movable cap portion is the disk-shaped cap body disposed between the hinge portion and the ground portion; the plate-shaped grounding portion constituting the tip end of the movable cap portion; It is composed of The work machine according to claim 4, wherein the width of the hinge portion and the ground contact portion is smaller than the diameter of the cap body.

9. A work machine described in any one of claims 2 to 8, wherein the inner surface of the hose is made of a conductive material.

10. A main body having an intake port and an exhaust port; a dust collecting unit attached to the main body and into which the airflow exhausted from the exhaust port flows; Equipped with The main body portion is A drive unit; a fan that is actuated by the driving force of the driving 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 the intake port and the exhaust port; a movable cap portion provided on the housing and configured to be switchable between an open state in which the air intake port is opened and a closed state in which the air intake port is closed; Including, a hose that serves as a passage for the air flow flowing into the air intake is attached to the air intake; The main body is configured to be able to be placed on the ground, the movable cap portion extends downward from the air intake port in the open state, has a grounding portion at a tip end, and has a cap body that can close the air intake port, When the main body is placed on the ground and the movable cap is in the open state, the grounding portion comes into contact with the ground, thereby discharging charged static electricity through the movable cap.

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