WO2023127926A1

WO2023127926A1 - Work machine

Info

Publication number: WO2023127926A1
Application number: PCT/JP2022/048414
Authority: WO
Inventors: 達哉羽川
Original assignee: 工機ホールディングス株式会社
Priority date: 2021-12-28
Filing date: 2022-12-27
Publication date: 2023-07-06

Abstract

Provided is a work machine capable of easily removing dust in a dust collecting case and improving workability. In order to discharge the dust accumulated in a dust collection chamber 32, a work machine 1 first moves a dust collection case 30 and a drawn-out portion 40 forward relative to a body housing 10. At this time, the dust removal blade 56 of the drawn-out portion 40 slides forward on the outer peripheral surface of a filter 61 to remove dust accumulated on the outer peripheral surface of the filter 61. The removed dust falls into the dust collection case 30. Subsequently, the drawn-out portion 40 is moved rearward relative to the dust collection case 30 to remove the drawn-out portion 40 from the dust collection case 30 through a discharge port 34. At this time, the drawn-out portion 40 draws out the dust in the dust collection chamber 32 through the discharge port 34. The drawn-out portion 40 has a restricting portion 50 at the front end thereof that prevents air from flowing back from the dust collection chamber 32 to a suction port 33.

Description

work machine

The present invention relates to a working machine such as a cleaner.

The work machine described in Patent Document 1 below includes a dust collection case, a filter provided in the dust collection case, a dust removal mechanism for removing dust on the surface of the filter, and a mechanism that allows the dust in the dust collection case to flow back from the suction port. and a regulation unit that regulates the

JP 2016-67664 A

In the configuration of Patent Document 1, for example, if the diameter of the dust collection case is reduced for the purpose of miniaturization, the inside of the dust collection case is clogged with dust, making it difficult to remove the dust from the inside of the dust collection case, resulting in poor workability. was there.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a work machine that can easily remove dust in a dust collection case to improve workability.

One aspect of the present invention is a working machine. The work machine includes a motor, a fan that generates an airflow by driving force of the motor, a body housing that accommodates the motor and the fan and has an air intake serving as an inlet for the airflow, and the air intake. A dust collector which has a connected discharge port and a suction port disposed on one side of the discharge port in the first direction and serving as an inlet for the airflow, and collects dust that flows in with the airflow. a case; and a drawer portion disposed inside the dust collection case that draws out the dust in the dust collection case by relatively moving to the other side in the first direction with respect to the dust collection case, The drawer portion is arranged adjacent to the suction port, allows the airflow flowing from the outside of the dust collection case to the inside of the dust collection case through the suction port, and allows the air flow to flow into the dust collection case through the suction port. It has a restricting portion that restricts the dust from flowing out from the inside to the outside of the dust collecting case.

Another aspect of the present invention is a work machine. The work machine includes a motor having a drive shaft, a fan attached to the drive shaft and generating an air flow by the driving force of the motor, an air intake which accommodates the motor and the fan, and serves as an inlet for the air flow. a main body housing having a mouth, a suction port having a tubular shape extending in the axial direction of the drive shaft and arranged at one end in the axial direction to serve as an inlet for the air flow, and a suction port arranged at the other end in the axial direction. a dust collection case for collecting dust flowing in with the air flow, and the dust collection case positioned between the suction port and the discharge port. a filter portion disposed inside the case for collecting dust contained in the airflow flowing from the suction port to the discharge port; a drawer portion disposed inside the dust collection case and moving relative to the dust collection case toward the other side in the axial direction to pull out the dust in the dust collection case from the discharge port.

The present invention may be expressed as an "electric working machine", an "electric device", or the like, and those expressed in such terms are also effective as aspects of the present invention.

ADVANTAGE OF THE INVENTION According to this invention, the working machine which can remove the dust in a dust collection case easily, and improved workability can be provided.

1 is a perspective view of a working machine 1 according to an embodiment of the present invention; FIG. The perspective view which cut|disconnected the right half of the dust collection case 30 in FIG. FIG. 3 is a perspective view of the dust collection case 30 and the drawer 40 separated from the main body housing 10 in the state of FIG. 2 ; FIG. 4 is an exploded perspective view of the dust collection case 30, the drawer portion 40, and the filter portion 60 with the right half shown in FIG. 3 cut; (A) is a right side view of the working machine 1; (B) is a plan view of the working machine 1; (A) is a cross-sectional view taken along the line AA in FIG. 5(B). (B) is an enlarged view of the B portion of FIG. 6(A). (C) is a partial cross-sectional view of a state in which the restricting portion 50 is opened in FIG. 6(A). Sectional drawing which expanded the front part of FIG. 6(A). Sectional drawing which separated the dust collection case 30 and the drawer part 40 from the main body housing 10 in FIG. (A) is a front view of the drawer portion 40. FIG. (B) is a front view showing the front end of the drawer 40. FIG. (C) is a CC cross-sectional view of FIG. 6(A).

Hereinafter, the same or equivalent constituent elements, members, etc. shown in each drawing are denoted by the same reference numerals, and duplication of description will be omitted as appropriate. The embodiments are illustrative rather than limiting of the invention. All features and combinations thereof described in the embodiments are not necessarily essential to the invention.

The present embodiment relates to a working machine 1. FIG. The work machine 1 is a cordless type cleaner (dust collector) that operates with power from a battery pack 19 .

1 to 6 define front and rear, up and down, and left and right directions of the working machine 1 which are orthogonal to each other. The front-rear direction is a direction parallel to the drive shaft 72 a of the motor 72 . The front-rear direction corresponds to the first direction. The front side corresponds to one side in the first direction. The rear side corresponds to the other side in the first direction. The left-right direction is a direction perpendicular to the imaginary plane on which the drive shaft 72a and the central axis of the handle portion 12 exist.

The work machine 1 has a body housing 10 . The body housing 10 is formed by, for example, fixing two left and right resin molded bodies to each other and integrating them by screwing or the like. The body housing 10 includes a motor accommodating portion 11 , a handle portion 12 and a battery pack mounting portion 13 .

The motor accommodating portion 11 has a tubular shape, for example, a substantially cylindrical shape, with a center axis parallel to the front-rear direction. As shown in FIGS. 6A and 6B, the motor accommodating portion 11 accommodates the fan motor unit 70 therein.

The motor housing portion 11 has an air inlet 14 in front of the fan motor unit 70 . The intake port 14 serves as an inlet for air flow generated by the fan 73 of the fan motor unit 70 . The motor accommodating portion 11 has a plurality of exhaust ports 15 on both left and right sides thereof. The exhaust port 15 serves as an outlet for the airflow generated by the fan 73 .

As shown in FIG. 3, the motor housing portion 11 has a notch portion 16 at its front end portion. The notch portion 16 is a portion through which the connection portion 46 of the drawer portion 40 is passed. The motor housing portion 11 has a step portion 17 behind the notch portion 16 . The stepped portion 17 engages (butts against) the stepped portion 47 of the connecting portion 46 .

The handle portion 12 extends rearward from the central portion in the left-right direction of the upper portion of the rear end of the motor accommodating portion 11 . The handle portion 12 has a front portion that extends substantially parallel to the front-rear direction, and a rear portion that extends rearward while gently bending downward.

The battery pack mounting portion 13 continues to the lower rear end portion of the handle portion 12 . Battery pack mounting portion 13 detachably mounts battery pack 19 . The battery pack 19 can be attached to the battery pack attachment portion 13 by obliquely sliding from the rear upper direction to the front lower direction. Motor 72 is driven by the power of battery pack 19 attached to battery pack attachment portion 13 .

The work machine 1 has latch members 21 at the upper and lower portions of the motor accommodating portion 11, respectively. The latch member 21 is a member for locking the dust collection case 30 to the main body housing 10 . As shown in FIG. 6B, the latch member 21 is biased by a spring 24 in a direction protruding radially outward from the motor accommodating portion 11 .

The latch member 21 has a pressing portion 22 and a claw portion 23 . The pressing portion 22 is a portion that the operator presses to release the lock by the latch member 21 . The claw portion 23 is a portion that engages with the latch engagement hole 36 of the dust collection case 30 to lock the dust collection case 30 .

The work machine 1 has a switch panel 25 on the upper surface of the handle portion 12 . The switch panel 25 is provided with a strong button 26, a standard/weak button 27, and an off button 28. - 特許庁When the strong button 26 is pressed, the motor 72 rotates at high speed. The standard/weak button 27 switches between medium-speed rotation and low-speed rotation of the motor 72 each time it is pressed. The off button 28 is a button for stopping the motor 72 .

The work machine 1 has a dust collection case 30 . The dust collection case 30 is, for example, a single resin molding. The dust collection case 30 is also called a dust case. The dust collection case 30 has a nozzle portion 31 , a dust chamber 32 , a suction port 33 (suction portion), and a discharge port 34 .

The nozzle portion 31 has a tubular shape with a center axis parallel to the front-rear direction, and is positioned at the front end portion of the dust collection case 30 . The nozzle part 31 is a part forming the suction port 33 . The entire inside of the nozzle portion 31 is the suction port 33 . The suction port 33 serves as an inlet for the airflow generated by the fan 73 into the dust collection chamber 32 . The suction port 33 is positioned forward of the discharge port 34 .

The dust collection chamber 32 has a cylindrical shape with a center axis parallel to the front-rear direction, and is connected to the rear of the nozzle portion 31 . The outer peripheral surface and the inner peripheral surface of the dust collection chamber 32 have a shape (tapered shape) in which the diameter decreases toward the front. The dust collection chamber 32 has a larger diameter than the nozzle portion 31 . The dust collection chamber 32 has an inner dimension larger than that of the nozzle portion 31 when viewed from the front. The dust collection chamber 32 is positioned between the nozzle portion 31 and the discharge port 34 . The dust collection chamber 32 collects (accumulates) dust that flows from the suction port 33 along with the air flow.

The outlet 34 is located at the rear end of the dust collection chamber 32 . The outlet 34 connects (communicates) with the inlet 14 of the body housing 10 . The discharge port 34 is a portion for discharging dust in the dust collection chamber 32 to the outside, and is also a passage portion for passing the air flow generated by the fan 73 from the dust collection chamber 32 to the body housing 10 .

The dust collection case 30 has extensions 35 at upper and lower rear ends. The extension part 35 is a rearward extension of a part of the cylindrical shape of the dust collection case 30 . Extension 35 has a latch engagement hole 36 . The latch engagement hole 36 is a portion for hooking the claw portion 23 of the latch member 21 . When the dust collection case 30 is slid rearward with respect to the body housing 10 so as to transition from the state shown in FIG. 3 to the state shown in FIG. It is locked to the body housing 10 .

As shown in FIGS. 1 and 5(A) and (B), the dust collection case 30 has a cover portion 37 on the right portion of the rear end. The cover portion 37 is a portion that covers the connection portion 46 of the drawer portion 40 . A rear end portion of the cover portion 37 serves as a hook portion 38 . The hook portion 38 is a portion for hooking the claw portion 49 of the drawer portion 40 to lock the drawer portion 40 to the dust collection case 30 .

The working machine 1 has a drawer section 40 . The drawer 40 is arranged inside the dust collection chamber 32 . The drawer 40 is a member that pulls out (scrapes) the dust in the dust collection chamber 32 from the discharge port 34 by moving backward relative to the dust collection case 30 . The drawer portion 40 extends forward from the filter portion 60 . Further, the front end portion of the drawer portion 40 abuts against the inner surface of the front wall portion of the dust collection chamber 32 (especially around the suction port 33).

The lead-out portion 40 has a base portion 41, three pillar portions 42, an intermediate connecting portion 43, and a front end connecting portion 44 as a frame portion made of, for example, a resin molding.

The base portion 41 is a plate-like annular portion perpendicular to the front-rear direction. The outer edge of the base 41 extends along the inner peripheral surface of the dust collection case 30 . The front surface of the base portion 41 engages with the step portion 39 on the inner surface of the dust collection case 30 as shown in FIG. The rear surface of the base portion 41 engages (abuts) the front end portion of the main body housing 10 as shown in FIG. 7 and is pressed forward. That is, the rear end portion of the drawer portion 40 contacts the body housing 10 and is pressed forward toward the dust collection chamber 32 .

The three pillars 42 extend forward from the base 41 respectively. The three pillars 42 are provided at approximately equal angular intervals when viewed from the front. One of the pillars 42 is positioned directly above the center axis of the dust collection chamber 32 . In other words, the pillar 42 does not exist within a range of about 120 degrees centered on the central axis of the dust collection chamber 32 .

The intermediate connecting portion 43 connects the lengthwise intermediate portions of the three pillars 42 to each other in a substantially arc shape around the central axis of the dust collection chamber 32 . In the radial direction of the dust collection chamber 32 , the intermediate connection portion 43 connects portions of the three pillars 42 near the center axis of the dust collection chamber 32 (ends on the center axis side). The intermediate connecting portion 43 is not closed when viewed from the front, and the intermediate connecting portion 43 does not exist within a range of approximately 120 degrees centered directly below the central axis of the dust collection chamber 32 .

The front end connecting portion 44 connects the front end portions of the three pillars 42 in the longitudinal direction to each other in a substantially circular shape around the central axis of the dust collection chamber 32 . The front end connecting portion 44 has a smaller diameter than the intermediate connecting portion 43 . The lead-out portion 40 has a holding portion 45 connected to the front end connecting portion 44 . The holding portion 45 is located at the front end portion of the column portion 42 located directly above the central axis of the dust collection chamber 32 . The holding portion 45 has a cylindrical shape with a center axis parallel to the left-right direction. The holding portion 45 is a portion that holds the mounting portion 52 of the restricting portion 50 .

As shown in FIGS. 2 to 4, the front end connecting portion 44 is connected to the lower right end portion of the holding portion 45. As shown in FIG. Therefore, when viewed from the right, the right end opening of the holding portion 45 is exposed above the front end connecting portion 44 . This facilitates attachment and detachment of the restricting portion 50 .

The lead-out portion 40 has a restriction portion 50 . The restricting portion 50 is made of an elastic body such as rubber. The restricting portion 50 is arranged adjacent to the rear of the rear end portion of the suction port 33 . That is, the front end portion of the lead-out portion 40 contacts the rear end portion of the nozzle portion 31 .

The regulation part 50 is a valve for preventing backflow of dust. The restricting portion 50 allows an air flow from the outside of the dust collection case 30 to the inside of the dust collection case 30 (inside the dust collection chamber 32 ) through the suction port 33 , and allows the air flow to flow into the dust collection case 30 through the suction port 33 . (inside the dust collection chamber 32 ) to the outside of the dust collection case 30 .

The restriction portion 50 has a cover portion 51 and an attachment portion 52 . The cover portion 51 contacts the rear end portion of the nozzle portion 31 or the inner surface of the front wall portion of the dust collection chamber 32 so as to block the suction port 33 . This contact force is applied by pressing the back surface of the base portion 41 forward by the body housing 10 as described above. The attachment portion 52 is held inside the holding portion 45 . The restricting portion 50 can be attached to the holding portion 45 by fitting the mounting portion 52 into the holding portion 45 from the right side.

The cover portion 51 is rotated by the airflow flowing from the outside of the dust collection case 30 to the inside of the dust collection case 30 (inside the dust collection chamber 32) through the suction port 33, with the mounting portion 52 as a fulcrum, as shown in FIG. can be deformed so as to be separated from the suction port 33 as shown in FIG. Since the front surface of the cover portion 51 contacts with the periphery of the suction port 33, the cover portion 51 does not deform forward (non-deformable).

As shown in FIG. 4 , the drawer portion 40 has a connecting portion 46 extending rearward from the right portion of the base portion 41 . The connecting portion 46 has a plate shape perpendicular to the vertical direction. The connecting portion 46 extends radially outward of the body housing 10 through the notch 16 of the body housing 10 shown in FIG. 3 and then extends rearward.

The connecting portion 46 is covered with the cover portion 37 of the dust collection case 30 . By engaging (fitting) the connecting portion 46 with the cover portion 37 , the rotational position of the drawer portion 40 with respect to the dust collection case 30 is determined. By engaging (fitting) the connecting portion 46 with the notch portion 16 , the rotational positions of the dust collection case 30 and the drawer portion 40 with respect to the main body housing 10 are determined. The connecting portion 46 has a stepped portion 47 . The stepped portion 47 engages with the stepped portion 17 of the body housing 10 .

The drawer portion 40 has a knob portion 48 . The knob portion 48 continues to the rear end of the connecting portion 46 . The grip portion 48 is a portion held by an operator when pulling out the drawer portion 40 from the dust collection case 30 to the rear. The knob portion 48 is connected to the base portion 41 by the connecting portion 46 . The knob portion 48 has a plate-like shape perpendicular to the left-right direction or a plate-like shape along the outer peripheral surface of the motor housing portion 11 and is close to the right front portion of the outer peripheral surface of the motor housing portion 11 .

The knob portion 48 is provided with a claw portion 49 protruding rightward. The claw portion 49 is a portion for hooking the hook portion 38 of the dust collection case 30 . The drawer portion 40 is locked to the dust collection case 30 by hooking the hook portion 38 on the claw portion 49 . By pressing the knob portion 48 inward with the dust collection case 30 and the drawer portion 40 separated from the main body housing 10, the engagement between the claw portion 49 and the hook portion 38 is released, and the dust collection case 30 is separated from the drawer portion. 40 can be pulled backwards.

The drawer portion 40 has a dust removal packing 54 as a dust removal portion. Dust removal packing 54 is attached to base 41 . The dust removal packing 54 is formed in an annular shape along the contour of the filter portion 60 when viewed from the front. The dust removal packing 54 has a ring portion 55 and dust removal blades 56 .

The ring portion 55 is a circular portion that fits into the inner peripheral portion of the base portion 41 . The dust removing blade 56 extends radially inward from the ring portion 55 . Here, eight dust removing blades 56 are arranged in a ring at equal angular intervals along the outer shape of the filter portion 60 when viewed from the front. The dust removing blade 56 slides forward on the outer surface of the filter 61 when the dust collecting case 30 and the drawer portion 40 are taken out (removed) forward from the main body housing 10 , thereby depositing on the outer surface (periphery) of the filter 61 ( (adhesion) is removed.

The work implement 1 has a filter section 60 . The filter unit 60 is arranged inside the dust collection chamber 32 so as to be positioned between the suction port 33 and the discharge port 34 and collects dust contained in the airflow flowing from the suction port 33 to the discharge port 34 . The filter part 60 is attached to the body housing 10 .

The filter section 60 has a filter 61 . The filter 61 is bag-shaped with an opening at the rear end. Filter 61 traps dust while allowing airflow to pass through.

The filter section 60 has a frame member 62 . The frame member 62 is, for example, a resin molding. The frame member 62 supports the filter 61 in a cylindrical shape with a closed front end and an opening at the rear end.

The frame member 62 includes a base portion 63 , a column portion 64 and a connecting portion 65 . The base 63 has a cylindrical shape with a central axis parallel to the front-rear direction. Four claw portions 63a for locking the holder 67 are provided on the base portion 63 at equal angular intervals when viewed from the front. The column portion 64 extends forward from the base portion 63 . Here, eight pillars 64 are provided at equal angular intervals when viewed from the front. The connecting portion 65 connects the front ends of the eight pillars 64 to each other in a ring shape. Further, in the present embodiment, the frame member 62 is arranged concentrically with the dust collection case 30 when viewed from the front. On the other hand, if the frame member 62 is offset above the center of the dust collection case 30, the filter 61 is less likely to be clogged with dust accumulated on the lower side of the dust collection case 30, and clogging of the filter 61 is suppressed. be done.

The filter section 60 has a holder 67 . The holder 67 is, for example, a resin molding. The holder 67 has a cylindrical shape whose central axis is parallel to the front-rear direction. The holder 67 is a member for holding the rear end portion of the filter 61 between itself and the base portion 63 of the frame member 62 . By assembling the holder 67 from the front to the frame member 62 supporting the filter 61 , the rear end portion of the filter 61 can be held (nipped) between the outer peripheral surface of the base portion 63 and the inner peripheral surface of the holder 67 .

The holder 67 has four cutouts 68 that engage with the claws 63a of the frame member 62 at equal angular intervals when viewed from the front. The holder 67 is locked to the frame member 62 by hooking the claw portion 63 a on the notch portion 68 .

The filter section 60 has a ring-shaped elastic member 69 attached to the rear end of the holder 67 . As shown in FIG. 7, the elastic member 69 airtightly closes the space between the rear end portion of the holder 67 and the front portion of the main body housing 10 over the entire periphery of the intake port 14 .

The filter unit 60 is attached to the front end portion of the main body housing 10 by aligning it with the front end portion of the main body housing 10 and rotating it clockwise by a predetermined angle when viewed from the front. In this state, the opening of the filter 61 is connected (communicated) with the intake port 14 so that the airflow passes through the filter 61 from the outside to the inside.

The work machine 1 has a fan motor unit 70 inside the motor housing portion 11 . A commercially available product can be used as the fan motor unit 70 . A fan motor unit 70 is a unit in which a motor 72 , a fan 73 and a substrate 74 are accommodated in a case 71 .

The motor 72 is, for example, an inner rotor type brushless motor, and has a drive shaft 72a. The fan 73 is directly connected to the drive shaft 72a in front of the main body of the motor 72 (a portion of the motor 72 excluding the drive shaft 72a), and rotates together with the motor 72. As shown in FIG. The fan 73 is rotated by the driving force of the motor 72 to generate an airflow. The case 71 has an air intake port 71a (FIG. 7) for taking in an air flow in the front part. The board 74 is held in the rear part of the main body of the motor 72 in a posture perpendicular to the front-rear direction. The board 74 mounts elements such as switching elements necessary for driving the motor 72 .

A ring-shaped elastic member 75 is provided between the outer front surface of the case 71 and the inner surface of the front wall portion of the motor housing portion 11 . The elastic member 75 airtightly closes the space between the front outer surface of the case 71 and the inner surface of the front wall portion of the motor accommodating portion 11 along the entire periphery of the intake port 14 and the air intake port 71a.

The operation of the working machine 1 will be described below.

When the strong button 26 or normal/weak button 27 is pressed, the motor 72 is activated. A fan 73 rotates together with the motor 72 to generate an air flow. This airflow enters the dust collection chamber 32 from the suction port 33, passes through the filter 61, passes through the discharge port 34, the air intake port 14, and the air intake port 71a, and is sucked into the fan 73. After cooling, the air is discharged out of the case 71 and out of the body housing 10 through the exhaust port 15 . Dust enters the dust collection chamber 32 from the suction port 33 together with the airflow, but cannot pass through the filter 61 and is collected by the filter 61 and accumulated in the dust collection chamber 32 .

Dust accumulated in the dust collection chamber 32 is discharged (removed) as follows.

First, the dust collection case 30 is moved forward relative to the main body housing 10 while pressing the pressing portions 22 of the upper and lower latch members 21 of the main body housing 10 to release the locking by the latch members 21 . Since the hook portion 38 of the dust collection case 30 is hooked on the claw portion 49 of the drawer portion 40 , the drawer portion 40 also moves forward relative to the main body housing 10 together with the dust collection case 30 . At this time, the dust removal blade 56 of the drawer 40 slides toward the outer peripheral surface of the filter 61 to remove dust accumulated on the outer peripheral surface of the filter 61 . The dust removed here falls into the dust collecting case 30 .

Subsequently, while pushing the knob portion 48 inward to release the engagement by the hook portion 38, the knob portion 48 is held and the drawer portion 40 is moved rearward relative to the dust collection case 30, and the drawer portion 40 is moved. It is removed (taken out) from the dust collection case 30 through the outlet 34 . At this time, the drawer portion 40 , especially the front end connecting portion 44 draws out (scrapes out) the dust in the dust collection chamber 32 through the discharge port 34 . The operation of removing the drawer 40 from the dust collection case 30 is preferably performed on a trash can or a garbage bag with the outlet 34 directed in the direction of gravity.

In order to attach the drawer portion 40 to the dust collection case 30, the connecting portion 46 of the drawer portion 40 and the cover portion 37 of the dust collection case 30 are aligned with each other, and the drawer portion 40 is directed toward the inside of the dust collection case 30. The dust collection case 30 can be moved forward in a straight line, and the hook portion 38 of the dust collection case 30 can be hooked on the claw portion 49 of the drawer portion 40 .

To attach the dust collection case 30 to the main body housing 10 , the connecting portion 46 of the drawer portion 40 and the cutout portion 16 of the main body housing 10 are aligned with each other, and the dust collection case 30 is directed toward the front end portion of the main body housing 10 . , so that the claws 23 of the latch member 21 on the main body housing 10 side are hooked to the latch engagement holes 36 of the dust collection case 30 .

According to this embodiment, the following effects can be obtained.

(1) When the drawer 40 is removed from the dust collection case 30 through the outlet 34 , the dust inside the dust collection chamber 32 is drawn out (scraped out) through the outlet 34 . For this reason, even if the dust is clogged in the dust collection chamber 32 and the dust cannot be discharged from the dust collection chamber 32 only by directing the discharge port 34 downward, the dust collection can be performed by removing the drawer 40 from the dust collection case 30. Dust can be easily removed from the chamber 32, and workability is good. In particular, when the radial dimension of the dust collection case 30 is suppressed from the viewpoint of design, the dust collection case 30 needs to be elongated in the front-rear direction in order to secure a large dust storage capacity, and clogging is likely to occur. . In the present embodiment, even when the dust collection case 30 has an elongated shape, dust can be easily removed from the inside of the dust collection chamber 32, resulting in good workability. In other words, the present embodiment enables the dust collection case 30 to have an elongated shape, thereby achieving a reduction in size in the radial direction.

(2) The drawer part 40 has a regulation part 50 at its front end that functions as a valve that prevents dust from flowing out from the dust collection chamber 32 toward the suction port 33 . Further, the drawer portion 40 has a dust removal packing 54 for removing dust from the filter 61 . That is, the drawer portion 40 is not a dedicated member for drawing dust out of the dust collection chamber 32 . Therefore, compared to the case of separately providing a dedicated member for extracting dust from the dust collection chamber 32, it is possible to suppress an increase in the number of parts, an increase in product weight, and cost.

(3) In order to close the suction port 33 with the restriction part 50, the drawer part 40 needs to extend to the front end inside the dust collection chamber 32. preferably extends to the front end within dust collection chamber 32 . That is, by incorporating the function of the restricting portion 50, which must extend to the front end portion in the dust collection chamber 32, into the drawer portion 40, the drawer portion 40 closes the suction port 33 and prevents dust from inside the dust collection chamber 32. can be suitably realized.

(4) Since the drawn-out portion 40 has the restricting portion 50, it is not necessary to fix the restricting portion 50 to the dust collecting case 30 by screwing or the like, which facilitates assembly. The restricting portion 50 can be easily attached to the holding portion 45 by fitting the mounting portion 52 into the holding portion 45 from the right side. If there is a step of fixing the restricting portion 50 to the dust collection case 30 by screwing or the like, the assembling performance is poor, especially when the dust collection case 30 has an elongated shape. Problems can be solved well.

(5) The drawer portion 40 has a dust removal packing 54, and when the drawer portion 40 is removed from the main body housing 10 together with the dust collection case 30, the dust removal blade 56 slides on the outer peripheral surface of the filter 61 and contacts the outer peripheral surface of the filter 61. Remove accumulated dust. Therefore, the filter 61 is dust-removed in the process of removing the dust inside the dust-collecting case 30, and workability is good.

Although the present invention has been described above with reference to the embodiments, it will be understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiments within the scope of the claims. By the way. Modifications will be discussed below.

The drawer 40 may have a structure (brush or elastic blade) for removing dust from the inner wall of the dust collection chamber 32 . This dust removing structure is preferably located at the front end of the drawer portion 40 . This dust removing structure may be formed integrally with the restricting portion 50 . For example, if the size of the cover portion 51 is enlarged and brought into contact with the inner wall of the dust collection chamber 32, the inner wall of the dust collection chamber 32 becomes a simple dust removal structure.

The work machine of the present invention may be one that operates on power from a battery incorporated in the body housing, or may be a corded type that operates on power from an external AC power source.

DESCRIPTION OF SYMBOLS 1... Working machine 10... Main body housing 11... Motor accommodating part 12... Handle part 13... Battery pack mounting part 14... Intake port 15... Exhaust port 16... Notch part 17... Stepped part 19 Battery pack 21 Latch member 22 Pressing portion 23 Claw portion 24 Spring 25 Switch Pal 26 Strong button 27 Standard/Weak button 28 Off button 30 Dust collection case (Dust case) 31 Nozzle part 32 Dust collection chamber 33 Suction port (suction part) 34 Discharge port 35 Extension part 36 Latch engagement hole 37 Cover part 38 Hook Part 39 Stepped portion 40 Drawer portion 41 Base portion 42 Column portion 43 Intermediate connecting portion 44 Front end connecting portion 45 Holding portion 46 Connecting portion 47 Stepped portion 48 Knob portion 49 Claw portion 50 Regulating portion 51 Cover portion 52 Mounting portion 54 Dust removal packing 55 Ring portion 56 Dust removal blade 60 Filter portion 61 Filter 62 Frame Member 63 Base portion 63a Claw portion 64 Column portion 65 Connecting portion 67 Holder 68 Notch portion 69 Elastic member 70 Fan motor unit 71 Case 71a Air intake Inlet 72 Motor 72a Drive shaft 73 Fan 74 Substrate 75 Elastic member.

Claims

a motor;
a fan that generates an air flow by the driving force of the motor;
a body housing containing the motor and the fan and having an air inlet serving as an inlet for the air flow;
It has an exhaust port connected to the intake port, and an intake port disposed on one side of the exhaust port in the first direction and serving as an inlet for the air flow, and collects dust that flows in with the air flow. a dust collecting case,
a drawer portion disposed inside the dust collection case and moving relative to the dust collection case toward the other side in the first direction to pull out the dust in the dust collection case;
The drawing portion is arranged adjacent to the suction port, allows the airflow flowing from the outside of the dust collection case to the inside of the dust collection case through the suction port, and allows the air flow to flow into the dust collection case through the suction port. A working machine comprising a restricting portion that restricts the dust from flowing out from the inside of the case to the outside of the dust collecting case.
The discharge port is provided at the other end of the dust collection case in the first direction,
A filter part arranged inside the dust collection case so as to be positioned between the suction port and the discharge port and collecting dust contained in an airflow flowing from the suction port to the discharge port. Item 1. Work machine according to item 1
The filter section includes a bag-shaped filter having an opening, and a frame member that supports the filter in a cylindrical shape with one end in the first direction closed and the opening positioned at the other end. wherein said opening communicates with said inlet such that said airflow passes through said filter from the outside to the inside;
3. The working machine according to claim 2, wherein said drawer section has a dust removal section that removes dust deposited on an outer periphery of said filter by sliding on an outer surface of said filter.
The drawer is attached to the dust collection case,
The filter part is attached to the main body housing,
4. The working machine according to claim 3, wherein said dust removing part slides on the outer surface of said filter when said dust collecting case is removed from said main body housing.
5. The working machine according to claim 4, wherein the dust removal section is formed in an annular shape along the outer shape of the filter section when viewed in the first direction.
The working machine according to claim 4 or 5, wherein the drawer pulls out the dust in the dust collection case from the discharge port when removed from the dust collection case through the discharge port.
The work machine according to any one of claims 2 to 6, wherein at least part of said drawer portion is arranged on one side of said filter portion in said first direction.
The dust collection case has a cylindrical shape extending in the first direction, has a nozzle portion including the suction port at one end in the first direction, and has the nozzle portion at the other end in the first direction. a dust collection chamber having an inner dimension larger than that of the nozzle when viewed in the first direction between the nozzle portion and the discharge port;
The working machine according to any one of claims 1 to 7, wherein one end of the drawer portion in the first direction contacts the other end of the nozzle portion in the first direction.
The restricting portion abuts on the other side end portion of the nozzle portion in the first direction so as to close the suction port, and extends from the outside of the dust collection case to the inside of the dust collection case through the suction port. The working machine according to claim 8, wherein the working machine is deformable so as to be separated from the suction port by the flowing air flow.
10. The lead-out portion according to any one of claims 1 to 9, wherein the other end portion in the first direction abuts the body housing and is pressed toward the dust collection case toward the one side in the first direction. Working machine described in paragraph.
a motor having a drive shaft;
a fan attached to the drive shaft and generating an air flow by the driving force of the motor;
a body housing containing the motor and the fan and having an air inlet serving as an inlet for the air flow;
It has a cylindrical shape extending in the axial direction of the drive shaft, and is arranged at one end in the axial direction and connected to the intake port serving as an inlet for the air flow, and arranged at the other end in the axial direction and connected to the intake port. a dust collection case having an outlet for collecting dust that flows in with the air flow;
a filter unit disposed inside the dust collection case so as to be positioned between the suction port and the discharge port, and configured to collect dust contained in an airflow flowing from the suction port to the discharge port;
At least a portion of the filter portion is disposed inside the dust collection case so as to be located on one side in the axial direction relative to the filter portion, and moves relative to the dust collection case toward the other side in the axial direction to move the dust collection case. and a drawer for drawing out the dust in the case from the discharge port.