JP2022155198A - Cleaning device - Google Patents

Abstract

To provide a technology which causes a brush to be shared by a first brush and a second brush.SOLUTION: A cleaning device disclosed by description may include: a first brush shaft extending in the horizontal direction; a first brush provided with a first brush body held by the first brush shaft; a second brush shaft extending in the horizontal direction; a second brush provided with a second brush body held by the second brush shaft; a first brush mounting member to which one end part of the first brush shaft is detachably mounted and which has a first shape; and a second brush mounting member to which one end part of the second brush shaft is detachably mounted and which has a second shape. One end part of the first brush shaft may have a first corresponding shape corresponding to the first shape. One end part of the second brush shaft may have a second corresponding shape corresponding to a second shape. The other end part of the first brush shaft may have the second corresponding shape.SELECTED DRAWING: Figure 4

Description

The technology disclosed in this specification relates to a cleaning device.

A cleaning device disclosed in Patent Document 1 includes a first brush shaft extending in the left-right direction, a first brush having a first brush body held by the first brush shaft, and a second brush shaft extending in the left-right direction. a second brush comprising a second brush body held by the second brush shaft; a first brush mounting member having a first shape, to which one end of the first brush is mounted; Two brushes are attached to one end and have a second brush mounting member having a second shape. The one end of the first brush shaft has a first corresponding shape corresponding to the first shape. The one end of the second brush shaft has a second corresponding shape corresponding to the second shape.

Japanese Patent Publication No. 2013-519456

In the cleaning device as described above, if a brush that can be used both as the first brush and as the second brush can be used, parts of the first brush and the second brush can be shared. Manufacturing costs can be reduced. This specification provides a technique that enables the use of a common brush for the first brush and the second brush.

A cleaning device disclosed in this specification includes a first brush shaft extending in the left-right direction, a first brush including a first brush body held by the first brush shaft, a second brush shaft extending in the left-right direction, a second brush having a second brush body held by the second brush shaft; and a first brush mounting member having a first shape, to which one end of the first brush shaft is detachably attached. and a second brush mounting member having a second shape, to which one end of the second brush shaft is detachably attached. The one end of the first brush shaft may have a first corresponding shape corresponding to the first shape. The one end of the second brush shaft may have a second corresponding shape corresponding to the second shape. The other end of the first brush shaft may have the second corresponding shape.

According to the above configuration, the first brush can be used by attaching one end of the first brush shaft to the first brush attachment member, and reversing the horizontal direction so that the other end of the first brush shaft can also be used as a second brush by attaching the end of the second brush mounting member to the second brush mounting member. A common brush can be used for the first brush and the second brush.

It is the perspective view which looked at the cleaning device 2 which concerns on an Example from the front right upper part. It is the perspective view which looked at the cleaning device 2 which concerns on an Example from the back left upper part. FIG. 2 is a vertical cross-sectional view in the vicinity of the center in the left-right direction of the cleaning device 2 according to the embodiment; Fig. 3 is an exploded perspective view of the front main brush 20 and the rear main brush 22 of the cleaning device 2 according to the embodiment, viewed from the front right upper side; Fig. 3 is an exploded perspective view of the front main brush 20 and the rear main brush 22 of the cleaning device 2 according to the embodiment, viewed from the front left upper side; Fig. 3 is a perspective view of the vicinity of the right front brush mounting portion 32 and the right rear brush mounting portion 36 of the cleaning device 2 according to the embodiment, as viewed from the front left lower side; Fig. 3 is a perspective view of the vicinity of the left front brush mounting portion 34 and the left rear brush mounting portion 38 of the cleaning device 2 according to the embodiment, viewed from the front right lower side; Fig. 4 is a vertical cross-sectional view of the vicinity of the left front brush mounting portion 34 of the cleaning device 2 according to the embodiment; Fig. 3 is a perspective view of the main brush unit 23 and the side brush unit 152 of the cleaning device 2 according to the embodiment, viewed from the front right upper side; 10 is a side view of the front wheel 8, the right rear wheel 10, the main brush unit 23, and the side brush unit 152 viewed from the right, with the rear main brush 22 moved upward, in the cleaning device 2 according to the embodiment; FIG. . 10 is a side view of the front wheel 8, the right rear wheel 10, the main brush unit 23, and the side brush unit 152 viewed from the right, with the rear main brush 22 moved downward, in the cleaning device 2 according to the embodiment; FIG. . 4 is a longitudinal sectional view of the vicinity of a main brush lifting lever 94 of the cleaning device 2 according to the embodiment; FIG. Fig. 10 is a perspective view of the vicinity of the main brush lifting lever 94 of the cleaning device 2 according to the embodiment, viewed from the front right upper side; Fig. 3 is a perspective view of the dust container 13 of the cleaning device 2 according to the embodiment as seen from the front right upper side; Fig. 3 is a perspective view of the cleaning device 2 according to the embodiment with the dust container 13 removed, as viewed from the rear right lower side; 4 is a cross-sectional view of the vicinity of the filter unit 120 and the fan unit 122 of the cleaning device 2 according to the embodiment; FIG. Fig. 3 is an exploded perspective view of the filter unit 120 of the cleaning device 2 according to the embodiment as seen from the rear right upper side; Fig. 3 is a perspective view of the filter unit 120 of the cleaning device 2 according to the embodiment, with the motor cover 138 removed, as viewed from the front left upper side; 3 is a vertical cross-sectional view of the vicinity of the fan unit 122 of the cleaning device 2 according to the embodiment; FIG. Fig. 3 is a perspective view of the side brush 150 of the cleaning device 2 according to the embodiment as seen from the front right upper side; It is the perspective view which looked at the side brush 150 of the cleaning device 2 which concerns on an Example from the front right lower part. Fig. 3 is a perspective view of the vicinity of the side brush unit 152 of the cleaning device 2 according to the embodiment, viewed from the front left and lower side, with the side brush 150 removed. Fig. 3 is a perspective view of the brush holder 154 of the cleaning device 2 according to the embodiment as seen from the front right upper side; Fig. 10 is a perspective view of the vicinity of the side brush unit 152 of the cleaning device 2 according to the embodiment, with the side brush 150 attached, viewed from the front left lower side; 3 is a perspective cross-sectional view of the brush pulley 156 of the cleaning device 2 according to the embodiment as seen from the front right upper side; FIG. 4 is a vertical cross-sectional view of the vicinity of the side brush unit 152 of the cleaning device 2 according to the embodiment, with the side brush 150 moved upward. FIG. 3 is a perspective view of the front portion of the brush base 160 of the cleaning device 2 according to the embodiment, viewed from the front left lower side. FIG. 4 is a vertical sectional view of the vicinity of the side brush unit 152 of the cleaning device 2 according to the embodiment, with the side brush 150 moved downward. FIG. 4 is a vertical cross-sectional view of the vicinity of the side brush operating portion 180 of the cleaning device 2 according to the embodiment, with the side brush lifting lever 184 raised. FIG. Fig. 11 is a perspective view of the brush operating cable 178, the side brush lifting lever 184, the lock-off switch 186, and the cable holder 188 of the cleaning device 2 according to the embodiment, as seen from the rear left lower side; 4 is a vertical cross-sectional view of the vicinity of the side brush operating portion 180 of the cleaning device 2 according to the embodiment, with the side brush lifting lever 184 pushed down. FIG. Fig. 10 is a perspective view of the vicinity of the switch operating portion 212 of the cleaning device 2 according to the embodiment, as seen from the rear left upper side; Fig. 10 is a perspective view of the vicinity of the right handle mounting portion 238 and the left handle mounting portion 240 of the cleaning device 2 according to the embodiment with the body cover 108 removed, as seen from the front left upper side; 4 is a vertical cross-sectional view of the vicinity of the right handle attachment portion 238 of the cleaning device 2 according to the example. FIG. 4 is a longitudinal sectional view of the vicinity of the left handle attachment portion 240 of the cleaning device 2 according to the example. FIG. Fig. 11 is a perspective view of the vicinity of the battery box 198 of the cleaning device 2 according to the embodiment when the battery cover 264 is open, viewed from the rear left upper side; Fig. 3 is a perspective view of a state in which the handle unit 6 of the cleaning device 2 according to the embodiment is folded with respect to the main body unit 4, viewed from the front right upper side.

A representative and non-limiting embodiment of the invention is described in detail below with reference to the drawings. This detailed description is merely intended to provide those skilled in the art with details for implementing a preferred embodiment of the invention, and is not intended to limit the scope of the invention. Also, the additional features and inventions disclosed can be used separately or in conjunction with other features and inventions to provide an improved cleaning device.

Moreover, any combination of features and steps disclosed in the following detailed description are not required to practice the invention in its broadest sense, but are specifically intended to illustrate representative embodiments of the invention only. is described. Moreover, various features of the representative embodiments below, as well as those that are claimed, are described herein in providing additional and useful embodiments of the invention. They do not have to be combined in the exact order of the examples or in the order listed.

All features set forth in the specification and/or claims, apart from the configuration of the features set forth in the examples and/or claims, are set forth in the disclosure and claims as originally filed. They are intended to be disclosed individually and independently of each other as limitations on the particulars identified. Further, all statements of numerical ranges and groups or populations are intended to disclose intermediate configurations thereof as limitations on the specific subject matter recited in the original disclosure as well as the claims.

In one or more embodiments, the cleaning device includes a first brush shaft extending in the left-right direction, a first brush including a first brush body held on the first brush shaft, and a second brush body extending in the left-right direction. A second brush having a brush shaft, a second brush body held by the second brush shaft, and one end of the first brush shaft being detachably attached to a first brush having a first shape. A brush attachment member and one end of the second brush shaft are detachably attached to the brush attachment member, and the second brush attachment member having a second shape may be provided. The one end of the first brush shaft may have a first corresponding shape corresponding to the first shape. The one end of the second brush shaft may have a second corresponding shape corresponding to the second shape. The other end of the first brush shaft may have the second corresponding shape.

According to the above configuration, the first brush can be used by attaching one end of the first brush shaft to the first brush attachment member, and reversing the horizontal direction so that the other end of the first brush shaft can also be used as a second brush by attaching the end of the second brush mounting member to the second brush mounting member. A common brush can be used for the first brush and the second brush.

In one or more embodiments, one of said first shape and said first corresponding shape may comprise a first convex shape. The other of the first shape and the first corresponding shape may have a first concave shape into which the first convex shape fits. One of the second shape and the second corresponding shape may comprise a second convex shape. The other of the second shape and the second corresponding shape may have a second concave shape into which the second convex shape fits.

According to the above configuration, torque can be transmitted between the first brush mounting member and the first brush by fitting the first convex shape into the first concave shape. Further, by fitting the second convex shape into the second concave shape, torque can be transmitted between the second brush mounting member and the second brush.

In one or more embodiments, the first shape may comprise the first convex shape. The first corresponding shape may comprise the first concave shape. The second shape may comprise the second convex shape. The second corresponding shape may comprise the second concave shape.

According to the above configuration, the first brush can be easily aligned with the first brush mounting member, and the second brush can be easily aligned with the second brush mounting member.

In one or more embodiments, the first convex shape may have a linear first rib shape extending along the radial direction. Each of the second convex shapes may have a plurality of linear second rib shapes extending along the radial direction and inclined with respect to each other.

According to the above configuration, the first convex shape and the second convex shape can be realized with a simple configuration.

In one or more embodiments, the rib width of the first rib shape may be greater than the rib width of the second rib shape.

If the rib width of the first rib shape is smaller than the rib width of the second rib shape, the first rib shape can also fit into the second concave shape that the second rib shape fits. In this case, one end of the second brush shaft may be accidentally attached to the first brush attachment member. According to the above configuration, since the rib width of the first rib shape is larger than the rib width of the second rib shape, the first rib shape fits into the second concave shape into which the second rib shape fits. I can't. With such a configuration, it is possible to prevent one end of the second brush shaft from being erroneously attached to the first brush attachment member.

In one or more embodiments, the first brush may further comprise a first brush cap covering the other end of the first brush shaft.

According to the above configuration, the second corresponding shape of the other end of the first brush shaft is covered with the first brush cap. The first brush can be stably attached by forming the first brush cap in a shape corresponding to the shape of the attachment portion of the other end of the first brush.

In one or more embodiments, the cleaning device includes a laterally movable first plunger attached to the other end of the first brush shaft and the other of the second brush shaft. , and may further include a second plunger that is movable in the left-right direction.

According to the above configuration, the attaching and detaching operations of the first brush and the second brush can be made easier.

In one or more embodiments, the first brush body spirally rotates in a first direction from the one end of the first brush shaft toward the center of the first brush shaft. The bristles are planted on the surface of the first brush shaft in a spiral manner rotating from the other end of the first brush shaft toward the center in a second direction opposite to the first direction. The first brush bristles may be provided. The second brush body has bristles planted on the surface of the second brush shaft in a spiral shape that rotates in the second direction from the one end of the second brush shaft toward the center, and the second brush. A second brush bristle may be provided on the surface of the second brush shaft in a spiral manner rotating in the first direction from the other end of the shaft toward the center.

According to the above configuration, even if the first brush and the second brush each have a so-called V-shaped flocking pattern, a common brush can be used for the first brush and the second brush. .

In one or more embodiments, the cleaning device includes a drive shaft, a first rotation transmission mechanism for transmitting rotation of the drive shaft to the first brush mounting member, and a rotation transmission mechanism for transmitting rotation of the drive shaft to the second brush mounting member. A second rotation transmission mechanism for transmission to the brush mounting member may be provided. When the drive shaft rotates, the first brush mounting member and the second brush mounting member may rotate in opposite directions.

According to the above configuration, since the first brush and the second brush rotate in opposite directions, dirt and dust on the work surface can be effectively swept up.

In one or more embodiments, the cleaning device may further include wheels and an undercarriage supported by the wheels.

According to the above configuration, it is possible to use a common brush for the first brush and the second brush in the cleaning device that cleans while moving on the work surface on wheels.

In one or more embodiments, the cleaning device may further include a user-graspable handle extending rearwardly and upwardly from the chassis.

According to the above configuration, it is possible to use a common brush for the first brush and the second brush in the cleaning device that the user operates by gripping the handle.

(Example)
As shown in FIG. 1, the cleaning device 2 includes a main body unit 4 and a handle unit 6. As shown in FIG. The main unit 4 has a front wheel 8 that touches the work surface at the center in the left-right direction at the front, a right rear wheel 10 that touches the work surface at the rear right, and a left rear wheel 12 that touches the work surface at the rear left (Fig. 2). As shown in FIG. 2, a dust container 13 is detachably attached to the rear of the main unit 4. As shown in FIG. The handle unit 6 is connected to the rear upper portion of the main unit 4 . When the user stands behind the cleaning device 2 and grasps the upper part of the handle unit 6 with both hands and pushes it forward, the front wheel 8, the right rear wheel 10, and the left rear wheel 12 are rotated, and the main unit 4 is moved. Move forward along the work surface. As shown in FIG. 1, the front end of the main unit 4 is provided with a headlamp 9 for illuminating the front of the main unit 4. As shown in FIG.

As shown in FIG. 3 , the main unit 4 includes a chassis 14 that supports front wheels 8 , right rear wheels 10 , and left rear wheels 12 . The front wheels 8 are so-called rotary casters. The wheels 8a are rotatably supported by the supports 8b around a rotation axis extending in the left-right direction, and the supports 8b are mounted on the chassis 14 around a rotation axis extending in the vertical direction. is rotatably supported. The right rear wheel 10 is rotatably supported by a right rear wheel plate 16 (see FIG. 6) fixed to the chassis 14 around a rotation shaft extending in the left-right direction. The left rear wheel 12 is rotatably supported by a left rear wheel plate 18 fixed to the chassis 14 around a rotation shaft extending in the left-right direction. The rotation axis of the right rear wheel 10 and the rotation axis of the left rear wheel 12 are arranged coaxially.

(Front main brush 20 and rear main brush 22)
Below the chassis 14, a front main brush 20 and a rear main brush 22 are arranged side by side in the front-rear direction. In the cleaning device 2, the lower end of the front main brush 20 rotates in the rearward direction, and the rear main brush 22 rotates in the forward direction to scrape up dust on the work surface. The front main brush 20 and the rear main brush 22 are attached to a main brush unit 23 (see FIG. 9) provided in the body unit 4. As shown in FIG.

As shown in FIG. 4, the front main brush 20 includes a roll brush 24 and a brush cap 26. As shown in FIG. The roll brush 24 includes a substantially cylindrical brush shaft 24a extending in the left-right direction, and brush bristles 24b planted on the surface of the brush shaft 24a. The rear main brush 22 has a roll brush 28 and a brush cap 30. - 特許庁The roll brush 28 includes a substantially cylindrical brush shaft 28a extending in the left-right direction, and brush bristles 28b planted on the surface of the brush shaft 28a. In the accompanying drawings, for clarity of illustration, only the shape of the enveloping surface at the tip of each brush bristle 24b, 28b is shown, and detailed illustration is omitted. ing. In the front main brush 20, the brush bristles 24b are planted in a spiral shape extending counterclockwise from the right end of the brush shaft 24a toward the center on the right side of the brush shaft 24a, and on the left side of the center of the brush shaft 24a. , the bristles are planted spirally from the left end of the brush shaft 24a toward the center in a clockwise direction. In the rear main brush 22, the brush bristles 28b are planted in a spiral shape extending clockwise from the right end of the brush shaft 28a toward the center on the right side of the brush shaft 28a, and on the left side of the center of the brush shaft 28a. , and bristles are planted spirally from the left end of the brush shaft 28a toward the center in a counterclockwise direction.

A substantially cylindrical groove 24c and an engaging groove 24d extending from the cylindrical groove 24c are formed at the right end of the brush shaft 24a. The engagement groove 24d has a linear groove shape extending in the radial direction. In this embodiment, the engaging groove 24d has a minus-shaped groove shape. As shown in FIG. 5, the left end of the brush shaft 24a is formed with a substantially cylindrical groove 24e and an engaging groove 24f extending from the cylindrical groove 24e. Each of the engaging grooves 24f extends in the radial direction and has a plurality of linear groove shapes orthogonal to each other. In this embodiment, the engagement groove 24f has a +-shaped groove shape. The groove width of the engaging groove 24f is smaller than the groove width of the engaging groove 24d. A substantially cylindrical groove 28c and an engagement groove 28d extending from the cylindrical groove 28c are formed at the left end of the brush shaft 28a. The engaging groove 28d has a linear groove shape extending in the radial direction. In this embodiment, the engagement groove 28d has a minus-shaped groove shape. As shown in FIG. 4, the right end of the brush shaft 28a is formed with a substantially cylindrical groove 28e and an engaging groove 28f extending from the cylindrical groove 28e. Each of the engaging grooves 28f extends in the radial direction and has a plurality of linear groove shapes orthogonal to each other. In this embodiment, the engaging groove 28f has a +-shaped groove shape. The groove width of the engaging groove 28f is smaller than the groove width of the engaging groove 28d.

The brush cap 26 includes a cap portion 26a that covers the left end of the brush shaft 24a, a holding groove 26b (see FIG. 5) formed on the outer surface of the cap portion 26a, and a substantially cylindrical portion protruding from the inner surface of the cap portion 26a. 26c and an engaging portion 26d extending from the side surface of the cylindrical portion 26c. The engaging portion 26d has a straight rib shape extending in the radial direction. In this embodiment, the engaging portion 26d has a minus-shaped rib shape. The diameter of the cylindrical portion 26c is slightly smaller than the diameter of the cylindrical grooves 24c, 24e of the brush shaft 24a. The rib width of the engaging portion 26d is smaller than the groove width of the engaging groove 24d of the brush shaft 24a and smaller than the groove width of the engaging groove 24f. Therefore, when the brush cap 26 is attached to the left end of the brush shaft 24a, the cylindrical portion 26c enters the columnar groove 24e and the engaging portion 26d enters the engaging groove 24f. The brush cap 30 includes a cap portion 30a covering the left end of the brush shaft 28a, a holding groove 30b (see FIG. 5) formed on the outer surface of the cap portion 30a, and a substantially cylindrical cylindrical portion protruding from the inner surface of the cap portion 30a. 30c and an engaging portion 30d extending from the side surface of the cylindrical portion 30c. The engaging portion 30d has a straight rib shape extending in the radial direction. In this embodiment, the engaging portion 30d has a minus-shaped rib shape. The diameter of the cylindrical portion 30c is slightly smaller than the diameter of the cylindrical grooves 28c, 28e of the brush shaft 28a. The rib width of the engaging portion 30d is smaller than the groove width of the engaging groove 28d of the brush shaft 28a and smaller than the groove width of the engaging groove 28f. Therefore, when the brush cap 30 is attached to the left end of the brush shaft 28a, the cylindrical portion 30c enters the cylindrical groove 28c and the engaging portion 30d enters the engaging groove 28d.

The roll brush 28 has the same shape and configuration as the roll brush 24 when left and right turned over. Therefore, common parts can be used for the roll brush 24 and the roll brush 28 . Also, the brush cap 26 has the same shape and configuration as the brush cap 30 . Therefore, common parts can be used for the brush cap 26 and the brush cap 30 .

The front main brush 20 has a right end attached to a right front brush attachment portion 32 (see FIG. 6) of the main brush unit 23 and a left end attached to a left front brush attachment portion 34 (see FIG. 7) of the main brush unit 23 . The rear main brush 22 has a right end attached to a right rear brush attachment portion 36 (see FIG. 6) of the main brush unit 23 and a left end attached to a left rear brush attachment portion 38 (see FIG. 7) of the main brush unit 23 . As shown in FIG. 6 , the right front brush attachment portion 32 and the right rear brush attachment portion 36 are arranged in the lower right portion of the main unit 4 . As shown in FIG. 7 , the left front brush mounting portion 34 and the left rear brush mounting portion 38 are arranged in the lower left portion of the main unit 4 .

As shown in FIG. 6 , the right front brush mounting portion 32 includes a driven shaft 40 and a holder 42 . The holder 42 holds the driven shaft 40 so as to be rotatable about the left-right direction as a rotation axis. The driven shaft 40 includes a cylindrical portion 40a projecting in a substantially cylindrical shape and an engaging portion 40b extending from the cylindrical portion 40a. The engaging portion 40b has a straight rib shape extending in the radial direction. In this embodiment, the engaging portion 40b has a minus-shaped rib shape. The diameter of the cylindrical portion 40 a is slightly smaller than the diameter of the cylindrical groove 24 c of the brush shaft 24 a of the front main brush 20 . The rib width of the engaging portion 40b is slightly smaller than the groove width of the engaging groove 24d of the brush shaft 24a of the front main brush 20 and larger than the groove width of the engaging groove 24f of the brush shaft 28a of the rear main brush 22. . Therefore, although the right end of the front main brush 20 can be attached to the driven shaft 40, the right end of the rear main brush 22 cannot be attached. With such a configuration, it is possible to prevent the rear main brush 22 from being erroneously attached to the right front brush attachment portion 32 .

The right rear brush mounting portion 36 has a driven shaft 44 and a holder 46 . The holder 46 holds the driven shaft 44 so as to be rotatable about the left-right direction as a rotation axis. The driven shaft 44 includes a cylindrical portion 44a projecting in a substantially cylindrical shape and an engaging portion 44b extending from the cylindrical portion 44a. Each of the engaging portions 44b extends in the radial direction and has a shape of a plurality of linear ribs perpendicular to each other. In this embodiment, the engaging portion 44b has a +-shaped rib shape. The diameter of the cylindrical portion 44 a is slightly smaller than the diameter of the cylindrical groove 28 e of the brush shaft 28 a of the rear main brush 22 . The rib width of the engaging portion 44 b is slightly smaller than the groove width of the engaging groove 28 f of the brush shaft 28 a of the rear main brush 22 . Therefore, although the right end of the rear main brush 22 can be attached to the driven shaft 44, the right end of the front main brush 20 cannot be attached. With such a configuration, it is possible to prevent the front main brush 20 from being erroneously attached to the right rear brush attachment portion 36 .

As shown in FIG. 7, the left front brush mounting portion 34 includes a plunger pin 48, a holder 50, and a compression spring 52 (see FIG. 8). As shown in FIG. 8, the holder 50 holds the plunger pin 48 so as to be movable in the left-right direction and rotatable around the left-right direction as a rotation axis. A compression spring 52 is housed inside the holder 50 and biases the plunger pin 48 toward the right with respect to the holder 50 . The tip of the plunger pin 48 has a substantially hemispherical shape. As shown in FIG. 7, the left rear brush mounting portion 38 includes a plunger pin 54, a holder 56, and a compression spring 58 (see FIG. 8). As shown in FIG. 8, the holder 56 holds the plunger pin 54 so as to be movable in the left-right direction and rotatable around the left-right direction as a rotation axis. A compression spring 58 is housed inside the holder 56 and biases the plunger pin 54 toward the right with respect to the holder 56 . The tip of the plunger pin 54 has a substantially hemispherical shape.

When attaching the front main brush 20 to the main unit 4, first, as shown in FIG. Push toward the left front brush mounting portion 34 . As a result, the plunger pin 48 moves leftward against the biasing force of the compression spring 52 , and the right end of the front main brush 20 is arranged leftward from the right front brush mounting portion 32 . From this state, the cylindrical portion 40a (see FIG. 6) of the right front brush mounting portion 32 is inserted into the cylindrical groove 24c (see FIG. 4) at the right end of the front main brush 20, and the engaging groove 24d at the right end of the front main brush 20 is pushed. (See FIG. 4). As a result, the front main brush 20 is attached to the right front brush attachment portion 32 and the left front brush attachment portion 34 . In this state, the plunger pin 48 of the left front brush mounting portion 34 is pressed against the brush cap 26 of the front main brush 20 by the biasing force of the compression spring 52, and the brush shaft 24a of the front main brush 20 (see FIG. 4) is pushed. is pressed against the driven shaft 40 (see FIG. 6) of the right front brush mounting portion 32 . Therefore, it is possible to prevent the front main brush 20 from unexpectedly falling off from the right front brush mounting portion 32 and the left front brush mounting portion 34 . When removing the front main brush 20 from the main unit 4 , the front main brush 20 is pushed toward the left front brush mounting portion 34 against the biasing force of the compression spring 52 . As a result, the cylindrical portion 40a of the right front brush mounting portion 32 is pulled out of the right end cylindrical groove 24c of the front main brush 20, and the engaging portion 40b of the right front brush mounting portion 32 is pulled out of the right end engagement groove 24d of the front main brush 20. Get out. After that, by moving the front main brush 20 downward to the right, the plunger pin 48 of the left front brush mounting portion 34 is pulled out of the holding groove 26b of the brush cap 26.例文帳に追加As a result, the front main brush 20 is removed from the right front brush mounting portion 32 and the left front brush mounting portion 34 .

Similarly, when attaching the rear main brush 22 to the main unit 4, first, as shown in FIG. The main brush 22 is pushed toward the left rear brush mounting portion 38. - 特許庁As a result, the plunger pin 54 moves leftward against the biasing force of the compression spring 58 , and the right end of the rear main brush 22 is positioned leftward of the right rear brush mounting portion 36 . From this state, the cylindrical portion 44a (see FIG. 6) of the right rear brush mounting portion 36 is inserted into the cylindrical groove 28e (see FIG. 4) at the right end of the rear main brush 22, and the engagement groove at the right end of the rear main brush 22 is pushed. The engaging portion 44b (see FIG. 6) of the right rear brush mounting portion 36 is inserted into 28f (see FIG. 4). Thereby, the rear main brush 22 is attached to the right rear brush attachment portion 36 and the left rear brush attachment portion 38 . In this state, the plunger pin 54 of the left rear brush mounting portion 38 is pressed against the brush cap 30 of the rear main brush 22 by the biasing force of the compression spring 58, and the brush shaft 28a (see FIG. 4) of the rear main brush 22 is pushed. ) is pressed against the driven shaft 44 (see FIG. 6) of the right rear brush mounting portion 36 . Therefore, it is possible to prevent the rear main brush 22 from unexpectedly falling off from the right rear brush mounting portion 36 and the left rear brush mounting portion 38 . When removing the rear main brush 22 from the main unit 4 , the rear main brush 22 is pushed toward the left rear brush mounting portion 38 against the biasing force of the compression spring 58 . As a result, the cylindrical portion 44a of the right rear brush mounting portion 36 is pulled out of the cylindrical groove 28e at the right end of the rear main brush 22, and the engaging portion of the right rear brush mounting portion 36 is pulled out of the engagement groove 28f at the right end of the rear main brush 22. 44b exits. After that, the plunger pin 54 of the left rear brush attachment portion 38 is pulled out from the holding groove 30b of the brush cap 30 by moving the rear main brush 22 downward to the right. Thereby, the rear main brush 22 is removed from the right rear brush mounting portion 36 and the left rear brush mounting portion 38 .

(Main brush unit 23)
As shown in FIG. 9 , the right front brush mounting portion 32 and the right rear brush mounting portion 36 are supported by the right brush plate 60 , and the left front brush mounting portion 34 and the left rear brush mounting portion 38 are supported by the left brush plate 62 . Supported. The holder 42 (see FIG. 6) of the right front brush mounting portion 32 and the holder 46 (see FIG. 6) of the right rear brush mounting portion 36 each pass through the right brush plate 60 from the left to the right. It is fixed to the brush plate 60. The driven shaft 40 of the right front brush mounting portion 32 and the driven shaft 44 of the right rear brush mounting portion 36 each protrude to the right from the right brush plate 60 . The holder 50 of the left front brush mounting portion 34 and the holder 56 of the left rear brush mounting portion 38 are each fixed to the left brush plate 62 while penetrating the left brush plate 62 from right to left. The right brush plate 60 and left brush plate 62 are connected by a link member 64 . The link member 64 is a C-shaped channel material having a longitudinal direction in the left-right direction. The right end of the link member 64 is fixed to the front upper portion of the right brush plate 60 , and the left end of the link member 64 is fixed to the front upper portion of the left brush plate 62 . Hereinafter, the right brush plate 60, the left brush plate 62, and the link member 64 are also collectively referred to as a main brush support member 63.

As shown in FIG. 6 , the right brush plate 60 is arranged to the right of the chassis 14 . The holder 42 of the right front brush mounting portion 32 passes through a right front opening 66 formed in the chassis 14 from right to left, and the holder 46 of the right rear brush mounting portion 36 is formed in the chassis 14. It penetrates the right rear opening 68 from the right to the left. The holder 42 of the right front brush mounting portion 32 has a substantially cylindrical cylindrical portion 42a. The axis of the cylindrical portion 42 a substantially coincides with the axis of the driven shaft 40 . A right front opening 66 of the chassis 14 has an upper edge 66a and a lower edge 66b corresponding to the side shape of the cylindrical portion 42a. The cylindrical portion 42a of the holder 46 is rotatably supported by the upper edge 66a and the lower edge 66b of the right front opening 66 of the chassis 14, whereby the right brush plate 60 is rotatably supported by the chassis 14. .

As shown in FIG. 7 , the left brush plate 62 is arranged to the left of the chassis 14 . The holder 50 of the left front brush mounting portion 34 passes through a left front opening 70 formed in the chassis 14 from left to right, and the holder 56 of the left rear brush mounting portion 38 is formed in the chassis 14. It penetrates the left rear opening 72 from the right to the left. The holder 50 of the left front brush mounting portion 34 has a substantially cylindrical cylindrical portion 50a. The axis of the cylindrical portion 50 a substantially coincides with the axis of the plunger pin 48 . A front left opening 70 of the chassis 14 has an upper edge 70a and a lower edge 70b corresponding to the side shape of the cylindrical portion 50a. The cylindrical portion 50a of the holder 50 is rotatably supported by the upper edge 70a and the lower edge 70b of the left front opening 70 of the chassis 14, whereby the left brush plate 62 is rotatably supported by the chassis 14. .

As shown in FIG. 9, a brush motor 74 and a deceleration mechanism 76 are attached to the upper portion of the right brush plate 60 . The output shaft of the brush motor 74 extends in the left-right direction. The brush motor 74 is supported by a deceleration mechanism 76 . The reduction mechanism 76 is, for example, a planetary gear reduction mechanism. The deceleration mechanism 76 is fixed to the right brush plate 60 while passing through the right brush plate 60 from left to right. The deceleration mechanism 76 is connected to a drive shaft 77 that projects to the right of the right brush plate 60 . The reduction mechanism 76 reduces the speed of the rotation of the output shaft of the brush motor 74 and transmits it to the drive shaft 77 .

To the right of the right brush plate 60 are a drive pulley 78, a guide pulley 80, a front driven pulley 82, a rear driven pulley 84 and a tensioner pulley 86. A drive pulley 78 is fixed to the drive shaft 77 . The guide pulley 80 is rotatably supported by the right brush plate 60 at the lower front portion of the right brush plate 60 . The front driven pulley 82 is fixed to the driven shaft 40 of the right front brush mounting portion 32 . A rear driven pulley 84 is fixed to the driven shaft 44 of the right rear brush mounting portion 36 . A tensioner pulley 86 is rotatably supported by a tensioner plate 88 . The tensioner plate 88 is rotatably supported by the right brush plate 60 about a rotation shaft 88a. Also, the tensioner plate 88 is connected to the right brush plate 60 via a tension spring 90 . The tension spring 90 urges the tensioner plate 88 with respect to the right brush plate 60 in the direction of rotation of the tensioner pulley 86 from the rear to the front. A main drive belt 92 spans the drive pulley 78 , the guide pulley 80 , the front driven pulley 82 , the rear driven pulley 84 and the tensioner pulley 86 . The main drive belt 92 is stretched from the front of the drive pulley 78 to the front of the guide pulley 80, from the rear of the guide pulley 80 to the front of the front driven pulley 82, and from above the front driven pulley 82 to the rear driven pulley 84. , from above the rear driven pulley 84 to below the tensioner pulley 86 , and from the front of the tensioner pulley 86 to the rear of the drive pulley 78 . Thus, when the right brush plate 60 is viewed from the right, when the drive pulley 78 rotates counterclockwise, the front driven pulley 82 rotates clockwise and the rear driven pulley 84 rotates counterclockwise. That is, when the right brush plate 60 is viewed from the right side, when the drive shaft 77 rotates counterclockwise due to the driving of the brush motor 74, the driven shaft 40 of the right front brush mounting portion 32 rotates clockwise to rotate the front main shaft. As the brush 20 rotates clockwise, the driven shaft 44 of the right rear brush mounting portion 36 rotates counterclockwise and the rear main brush 22 rotates counterclockwise. Hereinafter, the drive pulley 78, the front driven pulley 82, and the main drive belt 92 will be collectively referred to as the front main brush rotation transmission mechanism 81, and the drive pulley 78, the rear driven pulley 84, and the main drive belt 92 will be collectively referred to. Also referred to as a rear main brush rotation transmission mechanism 83 . Also, the front main brush rotation transmission mechanism 81 and the rear main brush rotation transmission mechanism 83 are collectively referred to as a main brush rotation transmission mechanism 85 . Note that the tensioner pulley 86 is pressed against the main drive belt 92 by the biasing force of the tension spring 90, thereby preventing the main drive belt 92 from loosening.

A cam piece 60 a extending rearward and upward is formed on the rear upper portion of the right brush plate 60 . A long hole 60b is formed in the cam piece 60a. The long axis of the long hole 60b is along a straight line passing through the axis of rotation of the driven shaft 40 (that is, the axis of rotation when the right brush plate 60 rotates with respect to the chassis 14) and the center of the long hole 60b.

A main brush lifting lever 94 is provided near the right brush plate 60 . The main brush lifting lever 94 includes an operation arm 94a extending in the vertical direction, a grip 94b provided at the upper end of the operation arm 94a, a shutter support portion 94c formed below the grip 94b of the operation arm 94a, and an operation arm. A pin support portion 94d formed below the shutter support portion 94c of the operation arm 94a, a spring support portion 94e formed below the pin support portion 94d of the operation arm 94a, and a lower end of the operation arm 94a bent forward. A drive arm 94f extending downward and a cam projection 94g projecting rightward from the vicinity of the lower end of the drive arm 94f are provided. The main brush lifting lever 94 is attached to the right handle plate 96 via a bolt 98 at the connection point between the operating arm 94a and the driving arm 94f. A right handle plate 96 is fixed to the chassis 14 . The main brush lifting lever 94 is supported by the right handle plate 96 via a bolt 98 so as to be rotatable about a rotation shaft extending in the left-right direction. Also, the main brush lifting lever 94 can tilt slightly in the left-right direction with respect to the right handle plate 96 with the bolt 98 as a fulcrum. The cam protrusion 94g of the main brush lifting lever 94 is inserted into the elongated hole 60b of the right brush plate 60. As shown in FIG. Therefore, when the main brush lifting lever 94 rotates in the longitudinal direction with respect to the right handle plate 96, the cam projection 94g presses the edge of the long hole 60b, so that the right brush plate 60 also moves in the longitudinal direction with respect to the chassis 14. to rotate. Hereinafter, the cam piece 60a of the right brush plate 60 and the cam projection 94g of the main brush lifting lever 94 are collectively referred to as the main brush rotation mechanism 95, and the main brush lifting lever 94 and the right handle plate 96 are collectively referred to as the main brush. Also referred to as an operation unit 97 .

As shown in FIG. 10, when the main brush lifting lever 94 is raised rearward, the right brush plate 60 is positioned relative to the chassis 14 in the vertical direction of the driven shaft 40 of the right front brush mounting portion 32 and the right rear brush. The vertical position of the driven shaft 44 of the mounting portion 36 becomes a rotation angle that substantially matches. In this case, the vertical positions of the lower end of the front main brush 20 and the lower end of the rear main brush 22 substantially coincide with the vertical positions of the lower end of the front wheel 8 , the lower end of the right rear wheel 10 , and the lower end of the left rear wheel 12 . do.

As shown in FIG. 11, when the main brush lifting lever 94 is pushed forward, the right brush plate 60 rotates relative to the chassis 14 in the direction in which the driven shaft 44 of the right rear brush mounting portion 36 moves downward. . In the state shown in FIG. 11 , the driven shaft 44 of the right rear brush mounting portion 36 is located below the driven shaft 40 of the right front brush mounting portion 32 . In this case, the position of the lower end of the front main brush 20 in the vertical direction is the same as in the state shown in FIG. It is positioned below the lower end of the ring 12 . Therefore, the brush bristles 28b of the rear main brush 22 can be strongly pressed against the work surface.

As shown in FIG. 9, the right handle plate 96 is formed with a plurality of positioning holes 96a and arcuate long holes 96b. The plurality of positioning holes 96 a are arranged corresponding to the pin support portions 94 d of the main brush lifting lever 94 . The elongated hole 96 b is arranged corresponding to the spring support portion 94 e of the main brush lifting lever 94 .

As shown in FIG. 12, a positioning pin 100 is attached to the pin support portion 94d of the main brush lifting lever 94. As shown in FIG. When the positioning pin 100 is in one of the plurality of positioning holes 96a of the right handle plate 96, the rotation of the main brush lifting lever 94 with respect to the right handle plate 96 is restricted. A spring support portion 94e of the main brush lifting lever 94 passes through a long hole 96b of the right handle plate 96 from right to left. The spring support portion 94e includes a first washer 102 fixed to the left end of the spring support portion 94e, a second washer 104 in contact with the left surface of the right handle plate 96, and the first washer 102 to the second washer 104. A compression spring 106 is attached to bias it toward the left. When the user does not operate the main brush lifting lever 94, the main brush lifting lever 94 is tilted leftward with respect to the right handle plate 96 by the biasing force of the compression spring 106, and the positioning pin 100 is arranged in a plurality of positions. one of the positioning holes 96a. When the user tilts the main brush lifting lever 94 to the right against the urging force of the compression spring 106 to remove the positioning pin 100 from the positioning hole 96a, the main brush lifting lever 94 rotates with respect to the right handle plate 96. movement is allowed. In this state, the user can adjust the rear main brush 22 to a desired vertical position by rotating the main brush lifting lever 94 in the front-rear direction. After adjusting the vertical position of the rear main brush 22 , when the user releases the main brush lifting lever 94 , the biasing force of the compression spring 106 causes the main brush lifting lever 94 to move leftward with respect to the right handle plate 96 . locating pin 100 into a corresponding one of the plurality of locating holes 96a. With such a configuration, the vertical position of the rear main brush 22 can be adjusted in a plurality of stages.

As shown in FIG. 13, the operating arm 94a of the main brush lifting lever 94 passes through the lever opening 108a of the body cover 108 covering the upper part of the chassis 14 from the bottom to the top, and the grip 94b of the main brush lifting lever 94 is , are arranged outside the body cover 108 . A shutter member 110 is attached to the main brush elevating lever 94 so that the inside of the main unit 4 cannot be viewed by the user through the lever opening 108a.

As shown in FIG. 9, the shutter member 110 has a shape in which a substantially rectangular plate member is curved back and forth. The shutter member 110 has an elongated hole 110a. The shutter member 110 is mounted on the shutter support portion 94c of the main brush lifting lever 94 with the operating arm 94a of the main brush lifting lever 94 penetrating the long hole 110a. The shutter support portion 94c has a rectangular shape curved back and forth corresponding to the shutter member 110 . The shutter member 110 is slidably supported by the shutter support portion 94c. The shutter support portion 94c has a size and shape that closes the elongated hole 110a regardless of the position of the operating arm 94a within the elongated hole 110a. Further, as shown in FIG. 13, the shutter member 110 is designed so that the operating arm 94a can be located in any position within the long hole 110a and in any position within the lever opening 108a. Even when it is in the position, it has a size and a shape that, together with the shutter support portion 94c, closes the lever opening 108a. With such a configuration, it is possible to prevent the user from visually recognizing the inside of the main unit 4 through the lever opening 108a.

(Dust container 13)
As shown in FIG. 3, the dust picked up by the front main brush 20 and the rear main brush 22 moves from the front to the rear along the underside of the chassis 14 and is sent to the dust container 13 behind the chassis 14.

As shown in FIG. 14, the dust container 13 has an opening 13a facing forward and upward. Inside the dust container 13, there is provided a partition portion 13b that is inclined downward from the front as it goes from the front to the rear. The interior of the dust container 13 is partitioned into a lower storage chamber 13c and an upper storage chamber 13d by a partition portion 13b. A notch 13e is formed in the front edge of the partition portion 13b. Of the dust sent from the main unit 4 to the dust container 13, large dust is stored in the lower storage chamber 13c, and small dust is stored in the upper storage chamber 13d. With such a configuration, a larger amount of dust can be accommodated than when there is no partition portion 13b. Further, by forming the notch 13e in the partition portion 13b, it is possible to make it easier for dust to move to the upper storage chamber 13d. An engaging groove 13f extending in the left-right direction is formed near the front end of the lower surface of the dust container 13. As shown in FIG. A latch 13g is provided near the front end of the upper surface of the dust container 13. As shown in FIG.

As shown in FIG. 15 , an engaging shaft 112 is provided at the lower rear portion of the main unit 4 . The right end of the engaging shaft 112 is fixed to the right rear wheel plate 16 and the left end of the engaging shaft 112 is fixed to the left rear wheel plate 18 . A duct 114 fixed to the chassis 14 is provided at the rear upper portion of the main unit 4 . The rear end of the chassis 14 and the rear end of the duct 114 form an opening 116 facing rearward and downward. A rubber sealing member 118 is attached to the rear end of the chassis 14 and the rear end of the duct 114 to surround the upper, right and left sides of the opening 116 . A latch receiver 114a is formed on the upper surface of the duct 114 near the rear end thereof.

As shown in FIG. 3, when attaching the dust container 13 to the main unit 4, first, the dust container 13 is tilted backward, and the engaging groove 13f of the dust container 13 is engaged with the engaging shaft 112 of the main unit 4. After that, raise the dust container 13 forward to engage the latch 13g of the dust container 13 with the latch receiver 114a of the main unit 4. As shown in FIG. When the dust container 13 is attached to the main unit 4, the sealing member 118 seals the gaps between the chassis 14 and the dust container 13 and between the duct 114 and the dust container 13. It is possible to suppress the leakage of dust sent to 13 to the outside. When removing the dust container 13 from the main unit 4, the latch 13g of the dust container 13 is first disengaged from the latch receiver 114a of the main unit 4, and then the dust container 13 is tilted backward to remove the dust container 13 from the main unit. Move behind 4. As a result, the engaging shaft 112 of the main unit 4 is pulled out of the engaging groove 13 f of the dust container 13 , and the dust container 13 can be removed from the main unit 4 . When the dust container 13 is removed from the main unit 4, the dust container 13 is first laid down backward, so that the dust contained in the dust container 13 is prevented from spilling out of the dust container 13.例文帳に追加can be done.

(Filter unit 120 and fan unit 122)
As shown in FIG. 16, a filter unit 120 and a fan unit 122 are attached to the duct 114 . In the cleaning device 2 , the fan unit 122 sucks air through the duct 114 and the filter unit 120 to generate an air flow from below the chassis 14 toward the dust container 13 . As a result, the movement of the dust picked up by the front main brush 20 and the rear main brush 22 to the dust container 13 is facilitated.

As shown in FIG. 17, the filter unit 120 includes a filter holder 124, a main filter 126, a sponge filter 128 and a pre-filter . The filter holder 124 includes a plurality of ventilation holes 124a, an inner upper filter holding portion 124b, an inner lower filter holding portion 124c, an inner right guide rib 124d, an inner left guide rib 124e, an outer right filter holding portion 124f, It has an outer left filter holding portion 124g, a motor holding portion 124h (see FIG. 18), and a seal holding portion 124i. The inner upper filter holding portion 124 b , the inner lower filter holding portion 124 c , the inner right guide rib 124 d , the inner left guide rib 124 e , the outer right filter holding portion 124 f , and the outer left filter holding portion 124 g It is formed on the rear surface side. A motor holding portion 124 h (see FIG. 18) is formed on the front side of the filter holder 124 . The seal holding portion 124 i is formed on the outer peripheral surface of the filter holder 124 .

The main filter 126 is a so-called HEPA (High Efficiency Particulate Air) filter. The main filter 126 is detachably attached to the filter holder 124 . The main filter 126 includes a filter body 126a and a filter frame 126b that holds the filter body 126a. The filter frame 126b is formed with an upper engaging portion 126c that can be engaged with the inner upper filter holding portion 124b and a lower engaging portion 126d that can be engaged with the inner lower filter holding portion 124c. In the main filter 126, the filter frame 126b is brought into contact with the rear surface of the filter holder 124 between the inner right guide rib 124d and the inner left guide rib 124e while the lower engaging portion 126d is inserted into the inner lower filter holding portion 124c. Then, the filter holder 124 is attached by engaging the upper engaging portion 126c with the inner upper filter holding portion 124b. When the main filter 126 is attached to the filter holder 124 , the filter body 126 a of the main filter 126 covers the rear side of the plurality of ventilation holes 124 a of the filter holder 124 . The sponge filter 128 is housed inside the pre-filter 130 . When the sponge filter 128 and the pre-filter 130 are attached to the filter holder 124 , the sponge filter 128 covers the rear side of the filter body 126 a of the main filter 126 . The pre-filter 130 is detachably attached to the filter holder 124 . The pre-filter 130 includes a fabric filter 130a and a filter frame 130b that holds the fabric filter 130a. The filter frame 130b is formed with a right engaging portion 130c that can be engaged with the outer right filter holding portion 124f and a left engaging portion 130d that can be engaged with the outer left filter holding portion 124g. In the pre-filter 130, the left engaging portion 130d is inserted into the outer left filter holding portion 124g, the filter frame 130b is brought into contact with the rear surface of the filter holder 124, and the right engaging portion 130c is engaged with the outer right filter holding portion 124f. is attached to the filter holder 124 by engaging the . When the pre-filter 130 is attached to the filter holder 124, the cloth filter 130a covers the sponge filter 128 from the rear side.

As shown in FIG. 18, the filter motor 132 is attached to the motor holding portion 124h of the filter holder 124. As shown in FIG. The filter motor 132 is, for example, a DC brushed motor. Note that the filter motor 132 may be a DC brushless motor or an AC motor. The filter motor 132 has an upper output shaft 132a protruding upward and a lower output shaft 132b protruding downward. An upper eccentric weight 134 is fixed to the upper output shaft 132a. A lower eccentric weight 136 is fixed to the lower output shaft 132b. The filter motor 132, the upper eccentric weight 134, and the lower eccentric weight 136 are covered in front by a motor cover 138 (see FIG. 16). A motor cover 138 is fixed to the filter holder 124 .

As shown in FIG. 16, a seal member 140 is attached to the seal holding portion 124i. The seal member 140 is a rubber member having a substantially square cross-sectional shape and an annular shape as a whole, and surrounds the outer surface of the filter holder 124 . The duct 114 is formed with an inlet 114b that opens rearward. A filter unit attachment portion 114c to which the filter unit 120 can be attached is formed at the edge of the inflow port 114b of the duct 114. As shown in FIG. The filter unit 120 is attached to the filter unit attachment portion 114c via a seal member 140. As shown in FIG.

When the fan unit 122 sucks air, dust adheres to the rear surface of the cloth filter 130a of the pre-filter 130. As shown in FIG. If a large amount of dust adheres to the cloth filter 130a, the air suction by the fan unit 122 will not be performed smoothly. When the filter motor 132 is driven, the rotation of the upper eccentric weight 134 (see FIG. 18) and the lower eccentric weight 136 (see FIG. 18) causes the filter motor 132 to vibrate. , the sponge filter 128 and the pre-filter 130 vibrate relative to the duct 114 . As a result, the dust adhering to the rear surface of the cloth filter 130 a is shaken off and stored in the dust container 13 . Since the seal member 140 is interposed between the filter holder 124 and the duct 114 , the filter holder 124 can be easily vibrated by the vibration of the filter motor 132 .

The duct 114 has an air flow path 114d through which the air that has passed through the filter unit 120 flows from right to left. An outflow port 114e through which air flows out from the duct 114 is formed near the left end of the air flow path 114d. The outflow port 114e opens forward.

The fan unit 122 has an electric fan 142 and a noise reduction box 144 . Electric fan 142 is arranged facing outlet 114 e of duct 114 . The electric fan 142 has a fan motor 146 and a centrifugal fan 148 . The fan motor 146 is, for example, an inner rotor type DC brushless motor. The fan motor 146 may be an outer rotor type motor, a DC brushed motor, or an AC motor. An output shaft 146a of the fan motor 146 extends in the front-rear direction. Centrifugal fan 148 is fixed to output shaft 146a. When the fan motor 146 is driven, the centrifugal fan 148 rotates, and the air in the duct 114 is sucked out through the outlet 114e.

As shown in FIG. 19, the muffler box 144 includes a fan housing chamber 144a, a first expansion chamber 144b, and a second expansion chamber 144c. An electric fan 142 is housed in the fan housing chamber 144a. The fan housing chamber 144a and the first expansion chamber 144b are partitioned by a first partition wall 144d. The first partition wall 144d extends from the upper inner surface to the lower inner surface of the sound deadening box 144 in the vertical direction. Further, as shown in FIG. 16, the first partition wall 144d extends leftward from the right inner surface of the muffling box 144 in the left-right direction. A gap is provided between the left end of the first partition wall 144 d and the left inner surface of the muffling box 144 . As shown in FIG. 19, the first expansion chamber 144b and the second expansion chamber 144c are partitioned by a second partition wall 144e. As shown in FIG. 16, the second partition wall 144e extends from the right inner surface to the left inner surface of the muffling box 144 in the left-right direction. Further, as shown in FIG. 19, the second partition wall 144e extends downward from the upper inner surface of the sound deadening box 144 in the vertical direction. A gap is provided between the lower end of the second partition wall 144 e and the lower inner surface of the muffling box 144 . The front end of the second expansion chamber 144c opens in the space between the chassis 14 of the main unit 4 and the body cover 108. As shown in FIG. The air sucked out from the duct 114 by the electric fan 142 flows out into the main unit 4 after passing through the fan housing chamber 144a, the first expansion chamber 144b, and the second expansion chamber 144c in order. The air that has flowed into the body unit 4 flows out of the body unit 4 from the joint between the chassis 14 and the body cover 108 . As described above, by providing the first expansion chamber 144b and the second expansion chamber 144c in the muffling box 144, the noise generated by the driving of the electric fan 142 can be attenuated, and the outside of the main unit 4 can be exposed to a large amount of noise. can be prevented from reaching

(side brush 150)
As shown in FIG. 1 , a side brush 150 is arranged on the right front portion of the main unit 4 . In the cleaning device 2 , the side brushes 150 can be rotated on the work surface to direct dirt, for example, along the wall, toward the front main brush 20 and the rear main brush 22 .

As shown in FIG. 20, the side brush 150 is a bevel brush, and includes a brush cup 150a and bristles 150b. The brush cup 150a includes a substantially disk-shaped base portion 150c and a support portion 150d projecting downward from the vicinity of the radially outer end portion of the base portion 150c. The support portion 150d has a bevel surface 150e that is obliquely inclined with respect to the axis passing through the center of the base portion 150c. The brush bristles 150b are planted on the bevel surface 150e of the brush cup 150a. The base portion 150c is formed with an engaging hole 150f and a pair of through holes 150g arranged to sandwich the engaging hole 150f. The engagement hole 150f has, for example, a hexagonal shape. For example, one of the pair of through holes 150g is arranged to face one side of the engaging hole 150f, and the other of the pair of through holes 150g is arranged to face the one side of the engaging hole 150f. They are arranged facing each other. As shown in FIG. 21, the base portion 150c includes an outer engaging tube 150h that protrudes downward from the edge of the engaging hole 150f, and a lower end of the outer engaging tube 150h that is bent radially outward and directed upward. A pair of operation pieces 150i are formed extending in the direction of the arrow. The outer engaging tube 150h has, for example, a rectangular tubular shape with a hexagonal cross section. The pair of operation pieces 150i penetrates the pair of through holes 150g from below to above. As shown in FIG. 20, engaging claws 150j are formed at the upper ends of the pair of operating pieces 150i. The side brush 150 is attached to a side brush unit 152 (see FIG. 22) provided on the right front portion of the main unit 4 .

As shown in FIG. 22, the side brush unit 152 has a brush holder 154, a brush pulley 156, and a movable shaft 158. As shown in FIG. As shown in FIG. 23, the brush holder 154 includes a substantially disk-shaped bottom plate portion 154a and a substantially cylindrical side plate portion 154b extending upward from the radially outer end of the bottom plate portion 154a. A plurality of clutch pawls 154c projecting radially outward are formed on the upper end of the side plate portion 154b. The plurality of clutch pawls 154c are arranged at predetermined angular intervals (for example, 45-degree intervals) in the circumferential direction. As shown in FIG. 22, the bottom plate portion 154a is formed with an inner engaging tube 154d projecting downward and a plurality of engaging holes 154e arranged to surround the inner engaging tube 154d. there is The inner engagement tube 154d has an inner surface having, for example, a circular cross-sectional shape, and an outer surface having, for example, a hexagonal cross-sectional shape. The cross-sectional shape of the outer surface of the inner engagement tube 154d corresponds to the shape of the engagement hole 150f of the side brush 150. As shown in FIG. The plurality of engagement holes 154e are arranged in the circumferential direction at predetermined angular intervals (for example, 60-degree intervals). For example, each of the plurality of engagement holes 154e is arranged to face each side of the outer surface of the inner engagement tube 154d. One engaging claw 150j of the pair of operation pieces 150i of the side brush 150 can be engaged with each of the plurality of engaging holes 154e. Hereinafter, the engaging claw 150j of the side brush 150 and the plurality of engaging holes 154e of the brush holder 154 are collectively referred to as a side brush engaging mechanism 151. The inner engagement cylinder 154d is also collectively referred to as a side brush fitting mechanism 153. As shown in FIG.

As shown in FIG. 24 , when attaching the side brush 150 to the brush holder 154 , the user holds the side brush 150 and aligns it with the brush holder 154 . is inserted into the engaging hole 150 f of the side brush 150 . From this state, when the side brush 150 is moved upward with respect to the brush holder 154, the engaging claws 150j of the pair of operating pieces 150i are engaged with the corresponding ones of the plurality of engaging holes 154e. Then, the side brush 150 is fixed to the brush holder 154 . In this embodiment, since the engaging hole 150f and the inner engaging tube 154d have a hexagonal shape, by inserting the inner engaging tube 154d into the engaging hole 150f, the pair of operating pieces 150i can be engaged with each other. It can be aligned with the matching hole 154e. From this state, by simply moving the side brush 150 upward with respect to the brush holder 154, the pair of operation pieces 150i can be engaged with the corresponding ones of the plurality of engagement holes 154e. In addition, since the engagement hole 150f and the inner engagement tube 154d have a hexagonal shape, the side brush 150 can be rotated by 60 degrees with respect to the brush holder 154 at the maximum, thereby rotating the engagement hole 150f and the inner engagement tube. 154d can be aligned. Since the engagement hole 150f and the inner engagement tube 154d can be aligned without rotating the side brush 150 to the brush holder 154 by a large amount, the user cannot visually recognize the brush holder 154 from below. Also, the engagement hole 150f and the inner engagement cylinder 154d can be easily aligned.

When the side brush 150 is attached to the brush holder 154 , the inner surface of the outer engaging tube 150 h of the side brush 150 engages the entire outer surface of the inner engaging tube 154 d of the brush holder 154 . With such a configuration, stress concentration can be suppressed when the brush holder 154 transmits rotation to the side brush 150 .

When removing the side brush 150 from the brush holder 154, the user pushes each of the pair of operation pieces 150i from the radial outside to the inside below the base portion 150c of the side brush 150. As shown in FIG. As a result, the engaging claws 150j of the pair of operating pieces 150i are disengaged from the engaging holes 154e. When the user moves the side brush 150 downward with respect to the brush holder 154 in this state, the inner engagement cylinder 154d is pulled out of the engagement hole 150f, and the side brush 150 can be removed from the brush holder 154.

(Side brush unit 152)
As shown in FIG. 25, the brush pulley 156 has a substantially cylindrical inner wall portion 156a, a substantially cylindrical outer wall portion 156b that surrounds the inner wall portion 156a, and a substantially cylindrical outer wall portion 156b that is coaxial with the inner wall portion 156a. It has a connecting portion 156c that connects the upper end of the portion 156a and the upper end of the outer wall portion 156b, and a drum portion 156d that protrudes radially outward from the lower end of the outer wall portion 156b. A plurality of reinforcing ribs 156e are formed between the outer surface of the outer wall portion 156b and the upper surface of the drum portion 156d. A plurality of clutch ribs 156f projecting radially inward are formed on the inner surface of the outer wall portion 156b. A plurality of clutch ribs 156f extend upward from the lower end of the outer wall portion 156b. The plurality of clutch ribs 156f are arranged corresponding to the plurality of clutch pawls 154c (see FIG. 23) of the brush holder 154, and arranged at predetermined angular intervals (for example, 45 degree intervals) in the circumferential direction.

As shown in FIG. 26, the brush pulley 156 is attached to a brush base 160 fixed to the undercarriage 14 . As shown in FIG. 27, the brush base 160 includes a substantially semi-cylindrical first inner wall portion 160a, a substantially semi-cylindrical second inner wall portion 160b, and surroundings of the first inner wall portion 160a and the second inner wall portion 160b. It has a surrounding generally cylindrical outer wall portion 160c. The first inner wall portion 160a and the second inner wall portion 160b have substantially the same shape except that they are left-right reversed. The first inner wall portion 160a, the second inner wall portion 160b, and the outer wall portion 160c are coaxially arranged. A plurality of reinforcing ribs 160d are formed between the first inner wall portion 160a and the outer wall portion 160c and between the second inner wall portion 160b and the outer wall portion 160c.

As shown in FIG. 26, the inner wall portion 156a of the brush pulley 156 is rotatably supported by the outer wall portion 160c of the brush base 160. As shown in FIG. Further, the side plate portion 154b of the brush holder 154 enters between the inner wall portion 156a and the outer wall portion 156b of the brush pulley 156 from below the brush pulley 156. As shown in FIG.

As shown in FIG. 9, the brush base 160 is provided with a first guide pulley 162 and a second guide pulley 164 . The first guide pulley 162 and the second guide pulley 164 are each rotatably supported by the brush base 160 . A relay pulley 166 is fixed to the driven shaft 40 of the right front brush mounting portion 32 . A sub-drive belt 168 is stretched over the drum portion 156 d of the brush pulley 156 , the first guide pulley 162 , the second guide pulley 164 and the relay pulley 166 . The sub-drive belt 168 is stretched from above the relay pulley 166 to above the first guide pulley 162, from above the first guide pulley 162 to the right of the drum portion 156d, and from behind the drum portion 156d to the first guide pulley 162. It spans the front of the second guide pulley 164 and spans from the right side of the second guide pulley 164 to below the relay pulley 166 . When the brush motor 74 is driven, the relay pulley 166 rotates clockwise when the right brush plate 60 is viewed from the right, and the brush pulley 156 rotates counterclockwise when the brush base 160 is viewed from above. Below, the drive pulley 78, the front driven pulley 82, the main drive belt 92, the driven shaft 40, the relay pulley 166, the brush pulley 156, and the sub drive belt 168 are collectively referred to as the side brush rotation transmission mechanism 163. Say.

As shown in FIG. 26, the movable shaft 158 has a substantially cylindrical shape. The vicinity of the lower end of the movable shaft 158 passes through the inside of the inner engagement tube 154d of the brush holder 154 and is rotatably supported by the inner engagement tube 154d of the brush holder 154. As shown in FIG. Further, the movable shaft 158 enters between the first inner wall portion 160a (see FIG. 27) and the second inner wall portion 160b from below the brush base 160, and slides between the first inner wall portion 160a and the second inner wall portion 160b. supported as possible. A tip of a shaft cable 172 is connected to the upper end of the movable shaft 158 via a connection pin 170 . The shaft cable 172 is stretched over a guide pulley 174 . A cable connector 172 a is provided at the rear end of the shaft cable 172 . Guide pulley 174 is rotatably supported by brush base 160 . A compression spring 176 is attached to the movable shaft 158 . The compression spring 176 urges the brush holder 154 downward against the reinforcing ribs 160d of the brush base 160. As shown in FIG. Hereinafter, the movable shaft 158, the shaft cable 172, the cable connector 172a, and the guide pulley 174 are also collectively referred to as a side brush moving mechanism 173.

As shown in FIG. 26, when the rear end of the shaft cable 172 is pulled rearward, the movable shaft 158 and the brush holder 154 are pulled upward against the biasing force of the compression spring 176. . In this case, the tips of the bristles 150b of the side brushes 150 are located above the lower ends of the front wheels 8, and the side brushes 150 are arranged above the work surface. Also, in this case, since the clutch claw 154c of the brush holder 154 is located above the clutch rib 156f of the brush pulley 156, the clutch claw 154c and the clutch rib 156f are not engaged. Therefore, even if the brush pulley 156 is rotated by driving the brush motor 74, the brush holder 154 and the side brush 150 are not rotated. Note that the position of the brush holder 154 shown in FIG. 26 is also called a separated position.

As shown in FIG. 28 , when the rear end of the shaft cable 172 is pushed forward, the movable shaft 158 and brush holder 154 are pushed downward by the biasing force of the compression spring 176 . In this case, the tips of the bristles 150b of the side brushes 150 are positioned below the lower ends of the front wheels 8, and the side brushes 150 are pressed against the work surface. Further, in this case, since the clutch claw 154c of the brush holder 154 and the clutch rib 156f of the brush pulley 156 are positioned substantially at the same position in the vertical direction, the clutch claw 154c and the clutch rib 156f are engaged. Therefore, when the brush pulley 156 is rotated by driving the brush motor 74, the brush holder 154 and the side brush 150 are also rotated. Note that the position of the brush holder 154 shown in FIG. 28 is also referred to as the close position. Hereinafter, the clutch claw 154c of the brush holder 154 and the clutch rib 156f of the brush pulley 156 are also collectively referred to as the clutch mechanism 155.

In addition, on the chassis 14, a protrusion ( (not shown) may be provided. When the brush holder 154 is moved from the close position to the separated position while the side brush 150 is rotating, the side brush 150 will continue to move even after the clutch claw 154c and the clutch rib 156f of the clutch mechanism 155 are disengaged. It continues to rotate for a while due to inertia. If the side brush 150 continues to rotate even though the brush holder 154 has moved to the separated position, the user may misunderstand that the clutch mechanism 155 is not functioning. When the chassis 14 is provided with the protrusions as described above, when the brush holder 154 is moved from the close position to the separated position while the side brush 150 is rotating, the clutch claws 154c and the clutch ribs 156f of the clutch mechanism 155 are engaged. After the disengagement, the brush bristles 150b repeatedly collide with the projecting portion, so that the rotation of the side brush 150 due to inertia can be quickly stopped. It is possible to prevent the user from misunderstanding that the clutch mechanism 155 is not functioning. Further, by configuring the flexible brush bristles 150b to repeatedly collide with the projecting portion, it is possible to suppress damage to the chassis 14 and the side brushes 150 due to collision. In addition, the projecting portion as described above may be formed in a shape that guides the dust collected by the side brush 150 toward the front main brush 20 and the rear main brush 22, for example.

As shown in FIG. 9, brush base 160 is attached to the front end of brush operating cable 178 . The brush operation cable 178 includes an outer cable 178a and an inner cable 178b that is accommodated inside the outer cable 178a and that can advance and retreat with respect to the outer cable 178a. A front end of the outer cable 178 a is fixed to the brush base 160 . A front end of the inner cable 178 b is connected to a cable connector 172 a at the rear end of the shaft cable 172 . A rear end of the brush operation cable 178 extends to a side brush operation portion 180 (see FIG. 1) provided on the handle unit 6 .

As shown in FIG. 29, the side brush operating section 180 includes a case 182, a side brush lifting lever 184, a lock off switch 186, a cable holder 188, and an adjusting bolt 190. As shown in FIG. 30, the side brush lifting lever 184 includes a lever body 184a arranged outside the case 182, a switch support portion 184b formed on the upper portion of the lever body 184a, and a lever body 184a extending from the lower left to the left. It has a rotating shaft 184c that extends in the direction and passes through the case 182 from the outside to the inside. The lever main body 184a is rotatably supported by the case 182 via a rotation shaft 184c with the horizontal direction as a rotation axis. The lock-off switch 186 is supported by the switch support portion 184b in the vicinity of the upper end of the lock-off switch 186 so as to be rotatable about the left-right direction as a rotation axis. As shown in FIG. 29, the lock-off switch 186 is biased rearward with respect to the lever body 184a by a compression spring 192 arranged inside the lever body 184a. An engagement claw 186a is formed at the bottom of the lock-off switch 186. As shown in FIG. An outer surface of the case 182 is formed with an engaging groove 182a corresponding to the engaging claw 186a. When the side brush lifting lever 184 is pulled up to the front, the engaging claw 186a of the lock-off switch 186 engages with the engaging groove 182a. In this state, pushing down the side brush lifting lever 184 forward is restricted. When the user pushes the lock-off switch 186, the engagement claw 186a of the lock-off switch 186 is disengaged from the engagement groove 182a, allowing the side brush lift lever 184 to be pushed forward.

Cable holder 188 is housed inside case 182 . As shown in FIG. 30, the cable holder 188 is fixed to the rotating shaft 184c of the side brush lifting lever 184. As shown in FIG. The cable holder 188 includes a support portion 188a that rotatably supports the rear end of the inner cable 178b of the brush operation cable 178, a guide groove 188b that guides the inner cable 178b, and a stopper portion 188c. As shown in FIG. 29, the rear end of the outer cable 178a of the brush operation cable 178 is arranged inside the case 182 and fixed to the case 182. As shown in FIG.

The adjusting bolt 190 has a bolt 190a and an adjusting knob 190b fixed to the head of the bolt 190a. The bolt 190a passes through the case 182 from the outside to the inside and is screwed into a nut 194 arranged inside the case 182 . A nut 194 is fixed to the case 182 . As shown in FIG. 31, the tip of the bolt 190a contacts the stopper portion 188c of the cable holder 188 when the side brush lifting lever 184 is pushed down, thereby restricting the side brush lifting lever 184 from being pushed down. The user can adjust the range in which the side brush lifting lever 184 can be pushed down by rotating the adjustment knob 190b to adjust the position of the tip of the bolt 190a.

As shown in FIG. 29, when the side brush lifting lever 184 is pulled rearward, the cable holder 188 pulls the rear end of the inner cable 178b, so the inner cable 178b is pulled relative to the outer cable 178a. pulled out. In this case, as shown in FIG. 26 , the rear end of the shaft cable 172 is pulled rearward, so the side brush 150 is pulled upward against the biasing force of the compression spring 176 . The position of the side brush lifting lever 184 shown in FIG. 29 is also referred to as the separation operation position.

As shown in FIG. 31, when the side brush lifting lever 184 is pushed forward, the cable holder 188 does not pull the rear end of the inner cable 178b. being pushed. In this case, as shown in FIG. 28, the rear end of the shaft cable 172 is not pulled rearward, and the side brush 150 is pushed downward by the biasing force of the compression spring 176 . Note that the position of the side brush lifting lever 184 shown in FIG. 31 is also called the proximity operation position.

As shown in FIG. 9, a roller 196 is arranged on the upper right front portion of the brush base 160 . The roller 196 is supported by the brush base 160 so as to be rotatable around a vertical rotation axis. As shown in FIG. 1 , the right front portion of the roller 196 protrudes outside the body cover 108 through the roller opening 108 b of the body cover 108 . Therefore, even if the body unit 4 accidentally collides with the front or right wall when the side brushes 150 send the dust near the wall to the front main brush 20 and the rear main brush 22, The roller 196 hits the wall before the body cover 108 does. With such a configuration, it is possible to suppress damage to the wall and the body cover 108 .

(Battery box 198 and ECU 204)
As shown in FIG. 3 , a battery box 198 is fixed to the top surface of the chassis 14 . As shown in FIG. 16, the battery box 198 is provided with a plurality of battery mounting portions 200 . A plurality of battery packs 202 are detachably attached to each of the plurality of battery attachment portions 200 . Each of the plurality of battery packs 202 includes a secondary battery cell (not shown) such as a lithium ion battery cell.

As shown in FIG. 3, an ECU (Electronic Control Unit) 204 is fixed to the top surface of the chassis 14 . The ECU 204 includes a control circuit board 206 and a case 208 that houses the control circuit board 206 . The control circuit board 206 includes a microcontroller, a plurality of switching elements, and the like, and controls power supplied from the plurality of battery packs 202 to the headlamp 9, the brush motor 74, the filter motor 132, and the fan motor 146. By controlling, the operations of the headlamp 9, the brush motor 74, the filter motor 132, and the fan motor 146 are controlled.

(Handle unit 6)
As shown in FIG. 1, the handle unit 6 includes a substantially U-shaped handle frame 210 extending rearward and upward. The handle frame 210 is formed by bending a pipe material having a substantially circular cross section. The handle frame 210 includes a right linear portion 210a extending upward and rearward from the upper right rear portion of the main unit 4, a left linear portion 210b extending upward and rearward from the upper left rear portion of the main unit 4, and a right linear portion 210a. An upper straight portion 210c extending in the left and right direction above the upper ends of the upper and left straight portions 210b; A left connecting portion 210e connecting the upper end and the left end of the upper straight portion 210c is provided. The side brush operating portion 180 is arranged near the upper end of the right straight portion 210 a of the handle frame 210 .

A switch operating portion 212 is attached to the upper straight portion 210 c of the handle frame 210 . As shown in FIG. 32, the switch operation unit 212 includes a main power switch 214, a lock-off button 216, a brush rotation speed switching button 218, a brush rotation speed indicator 220, a fan air volume switching button 222, and a fan air volume indicator. 224 , illumination button 226 , illumination indicator light 228 , dust removal button 230 , dust removal indicator light 232 , battery level display button 234 , and battery level indicator 236 .

The main power switch 214 is a dial type switch that can be rotated between an ON position for turning on the main power of the cleaning device 2 and an OFF position for turning off the main power of the cleaning device 2 . The main power switch 214 includes a substantially disk-shaped base portion 214a and a substantially rectangular parallelepiped knob portion 214b protruding from the base portion 214a. The knob portion 214b has a recessed portion 214c that is recessed inward near the center of the long side of the knob portion 214b when viewed in a direction perpendicular to the base portion 214a. The lock-off button 216 is arranged in the recess 214 c of the main power switch 214 . The lock-off button 216 is supported by the main power switch 214 so as to be movable between a lock position projecting outward from the knob portion 214b and a release position moved toward the inside of the knob portion 214b from the lock position. . The lock-off button 216 is urged from the unlocked position to the locked position by a compression spring (not shown). When the lock-off button 216 is at the lock position, the lock-off button 216 restricts turning of the main power switch 214 from the off position to the on position. When lock-off button 216 is in the unlocked position, lock-off button 216 allows main power switch 214 to pivot from the off position to the on position. When the main power switch 214 is turned from the off position to the on position, the lock off button 216 is held at the unlocked position until the main power switch 214 is turned from the on position to the off position. By adopting such a configuration, it is possible to prevent the main power switch 214 from turning on from the off position to the on position unintentionally by the user, thereby turning on the main power of the cleaning device 2 . can.

The brush rotation speed switching button 218 is a button for switching the rotation speeds of the front main brush 20 , the rear main brush 22 and the side brushes 150 . In the cleaning device 2, the rotation speed can be switched in multiple stages (for example, in two stages). The ECU 204 controls the rotation speed of the brush motor 74 when driving the brush motor 74 according to the rotation speed set by the brush rotation speed switching button 218 . The brush rotation speed indicator 220 changes the number of windows that light up according to the rotation speed set by the brush rotation speed switching button 218 .

The fan air volume switching button 222 is a button for switching ON/OFF of the electric fan 142 and the air volume of the electric fan 142 . In the cleaning device 2, the air volume of the electric fan 142 can be switched in multiple stages (for example, in two stages). The ECU 204 controls the rotation speed of the fan motor 146 when driving the fan motor 146 according to the air volume set by the fan air volume switching button 222 . The fan air volume indicator 224 changes the number of windows to be lit according to the air volume of the electric fan 142 set by the fan air volume switching button 222 .

The lighting button 226 is a button for switching ON/OFF of the headlight 9 . The illumination indicator lamp 228 is lit when the headlight 9 is on, and is extinguished when the headlight 9 is off. The dust remover button 230 is a button for switching ON/OFF of the filter motor 132 . The dust removal indicator lamp 232 lights when the filter motor 132 is on, and goes off when the filter motor 132 is off. The remaining battery level display button 234 is a button for switching ON/OFF of the remaining battery level indicator 236 . When the remaining battery level indicator 236 is ON, the number of windows corresponding to the remaining battery level of each of the plurality of battery packs 202 is turned on, and when it is OFF, all the windows are turned off.

As shown in FIG. 33 , the lower end of the right straight portion 210 a of the handle frame 210 is connected to the right handle plate 96 of the main unit 4 via the right handle attachment portion 238 . The lower end of the left straight portion 210 b of the handle frame 210 is connected to the left handle plate 242 of the main unit 4 via the left handle attachment portion 240 . The left handle plate 242 is fixed to the chassis 14 .

As shown in FIG. 34 , the right handlebar mounting portion 238 includes a body-side cam member 244 , a handle-side cam member 246 and a cover member 248 . The body side cam member 244 is fixed to the right handle plate 96 . The body-side cam member 244 includes a substantially cylindrical inner cylindrical portion 244a extending in the left-right direction, and a cam portion 244b bent outward from the left end of the inner cylindrical portion 244a. The cam portion 244b is formed with a tooth surface 244c facing rightward and having a plurality of protruding teeth. The handle-side cam member 246 and the cover member 248 are fixed to the right straight portion 210 a of the handle frame 210 . The handle-side cam member 246 is arranged to the left of the right straight portion 210a. The handle-side cam member 246 includes a handle support portion 246a that supports the right straight portion 210a, and a substantially cylindrical outer cylindrical portion 246b connected to the lower end of the handle support portion 246a and extending in the left-right direction. The inner diameter of the outer cylindrical portion 246b is slightly larger than the outer diameter of the inner cylindrical portion 244a. The inner cylindrical portion 244a is inserted into the outer cylindrical portion 246b from left to right. The inner cylindrical portion 244a rotatably supports the outer cylindrical portion 246b. The handle support portion 246a is formed with a left facing tooth surface 246c from which a plurality of teeth protrude. The tooth surface 246c is formed so as to mesh with the tooth surface 244c of the body-side cam member 244. As shown in FIG. The cover member 248 is arranged to the right of the right straight portion 210a. The cover member 248 includes a handle support portion 248a that supports the right straight portion 210a and a shaft support portion 248b that supports the connecting shaft 250. As shown in FIG. The right end of the connecting shaft 250 is screwed into a nut 252 arranged outside the shaft support portion 248b. The connecting shaft 250 passes through the inner cylindrical portion 244a, penetrates the right handle plate 96, and extends leftward. The connecting shaft 250 passes through the interior of a connecting pipe 254 supported on the upper surface of the duct 114 and extends to the left handle mounting portion 240 .

As shown in FIG. 35 , the left handle mounting portion 240 includes a body-side cam member 256 , a handle-side cam member 258 , a cover member 260 and a lever member 262 . The body side cam member 256 is fixed to the left handle plate 242 . The body-side cam member 256 includes a substantially cylindrical inner cylindrical portion 256a extending in the left-right direction, and a cam portion 256b bent outward from the right end of the inner cylindrical portion 256a. The cam portion 256b is formed with a tooth surface 256c facing leftward and having a plurality of protruding teeth. The handle-side cam member 258 and cover member 260 are fixed to the left straight portion 210 b of the handle frame 210 . The handle-side cam member 258 is arranged to the right of the left straight portion 210b. The handle-side cam member 258 includes a handle support portion 258a that supports the left straight portion 210b, and a substantially cylindrical outer cylindrical portion 258b connected to the lower end of the handle support portion 258a and extending in the left-right direction. The inner diameter of the outer cylindrical portion 258b is slightly larger than the outer diameter of the inner cylindrical portion 256a. The inner cylindrical portion 256a is inserted into the outer cylindrical portion 258b from right to left. The inner cylindrical portion 256a rotatably supports the outer cylindrical portion 258b. The handle support portion 258a is formed with a tooth surface 258c facing rightward and having a plurality of protruding teeth. The tooth surface 258c is formed to mesh with the tooth surface 256c of the cam member 256 on the body side. The cover member 260 is arranged to the left of the left straight portion 210b. The cover member 260 includes a handle support portion 260a that supports the left straight portion 210b and a lever receiving portion 260b on which the lever member 262 is arranged. As shown in FIG. 33, the lever receiving portion 260b is disposed between a pair of guide ribs 260c projecting leftward and a cam surface 260d facing leftward. . As shown in FIG. 35, the connecting shaft 250 penetrates the left handle plate 242 and passes through the inner cylindrical portion 256a. The left end of the connecting shaft 250 protrudes outside the cover member 260 through the lever receiving portion 260b of the cover member 260. As shown in FIG. An annular locking portion 250 a is formed at the left end of the connecting shaft 250 . The lever member 262 is arranged to the left of the cover member 260 . The lever member 262 includes an operation portion 262a operated by a user and a shaft support portion 262b connected to the lower end of the operation portion 262a. The shaft support portion 262b has a support pin 262c that supports the locking portion 250a of the connecting shaft 250. As shown in FIG. As shown in FIG. 33, the shaft support portion 262b of the lever member 262 is arranged between the pair of guide ribs 260c. The lever member 262 is rotatable with respect to the cover member 260 in a direction defined by the pair of guide ribs 260c with the support pin 262c as a rotation axis. The operating portion 262a is formed with an engaging portion 262d that engages with the left straight portion 210b when the lever member 262 is raised along the left straight portion 210b. As shown in FIG. 35, the shaft support portion 262b includes a first cam surface 262e that contacts the cam surface 260d of the cover member 260 when the lever member 262 is raised along the left straight portion 210b, and It has a second cam surface 262f that contacts the cam surface 260d of the cover member 260 when pushed away from the left straight portion 210b. The distance from the support pin 262c to the first cam surface 262e is greater than the distance from the support pin 262c to the second cam surface 262f.

When the lever member 262 is raised along the left straight portion 210 b , the first cam surface 262 e of the lever member 262 abuts against the cam surface 260 d of the cover member 260 so that the support pin 262 c is moved to the connecting shaft 250 . is pulled to the left. In this case, the cover member 260 is pressed rightward by the lever member 262 at the left handlebar mounting portion 240 . As a result, the handle-side cam member 258 is fixed to the body-side cam member 256 with the tooth surface 258c meshing with the tooth surface 256c. 34, the cover member 248 is pressed leftward by the nut 252. As shown in FIG. As a result, the handle-side cam member 246 is fixed to the body-side cam member 244 with the tooth surface 246c meshing with the tooth surface 244c. In this state, the mounting angle of the handle unit 6 with respect to the main unit 4 is fixed.

35, when the lever member 262 is pushed away from the left straight portion 210b, the second cam surface 262f of the lever member 262 contacts the cam surface 260d of the cover member 260. The pulling of the connecting shaft 250 by the support pin 262c is released. In this case, the tooth surface 258 c and the tooth surface 256 c of the left handle mounting portion 240 are disengaged, and the handle-side cam member 258 becomes rotatable with respect to the main body-side cam member 256 . 34, the tooth surface 246c and the tooth surface 244c are disengaged, and the handle-side cam member 246 becomes rotatable with respect to the main body-side cam member 244. As shown in FIG. In this state, the mounting angle of the handle unit 6 with respect to the main unit 4 can be freely adjusted. After adjusting the mounting angle of the handle unit 6 with respect to the main unit 4, the mounting angle of the handle unit 6 with respect to the main unit 4 is fixed again by pulling up the lever member 262 along the left straight portion 210b.

(battery cover 264)
As shown in FIG. 36 , the body cover 108 is formed with a battery opening 108 c corresponding to the battery box 198 . A battery cover 264 is provided in the battery opening 108c. The battery cover 264 is supported by the body cover 108 so as to be rotatable around a rotation axis extending in the left-right direction near the front end of the battery cover 264 . When the battery cover 264 is open, each of the plurality of battery packs 202 can be attached to and detached from each of the plurality of battery mounting portions 200 by sliding them vertically with respect to each of the plurality of battery mounting portions 200. can. When the battery cover 264 is closed, the battery cover 264 covers the entire battery opening 108c.

The upper end of the battery box 198 protrudes above the upper surface of the body cover 108 at the battery opening 108c. A waterproof rib 264 a is formed on the inner surface of the battery cover 264 . The waterproof rib 264a has a shape surrounding the battery box 198 when the battery cover 264 is closed. Also, when the battery cover 264 is closed, the lower end of the waterproof rib 264a abuts on the upper surface of the body cover 108 at a position below the upper end of the battery box 198 . Therefore, when the battery cover 264 is closed, a labyrinth structure is formed by the waterproof rib 264a and the battery box 198, so that water can be prevented from entering the battery cover 264. FIG.

A permanent magnet 264 b is attached to the center of the rear end of the battery cover 264 in the left-right direction. The permanent magnets 264b are arranged corresponding to metal screws 108d for fixing the body cover 108 to the chassis 14 . When the battery cover 264 is closed, the magnetic force acting between the permanent magnet 264b and the screw 108d acts in the direction in which the battery cover 264 is closed. Therefore, it is possible to prevent the battery cover 264 from being opened unexpectedly. Further, as shown in FIG. 3 , when the battery cover 264 is closed, the gravity acting on the battery cover 264 acts in the direction of closing the battery cover 264 . Therefore, it is possible to prevent the battery cover 264 from being opened unexpectedly.

As shown in FIG. 37, when the cleaning device 2 is to be stored without being used, the handle unit 6 is folded with respect to the main unit 4 so that the rear surface of the dust container 13 comes into contact with the work surface. , the cleaning device 2 can be placed. As a result, the space required for storing the cleaning device 2 can be reduced. Note that even when the cleaning device 2 is placed as shown in FIG. 37, the gravity acting on the battery cover 264 acts in the direction of closing the battery cover 264 . Therefore, it is possible to prevent the battery cover 264 from being opened unexpectedly. As shown in FIG. 37, when the handle unit 6 is folded with respect to the main unit 4, the user can hold the grip 266 formed at the front end of the chassis 14 to carry the cleaning device 2. .

(Modification)
In the above embodiment, the cleaning device 2 includes a brush motor 74 and a speed reduction mechanism 76. The brush motor 74 rotates the drive shaft 77 to rotate the front main brush 20, the rear main brush 22 and the side brushes 150. has been described. Alternatively, the cleaning device 2 may be configured without the brush motor 74 and the reduction mechanism 76 . In this case, for example, by providing a rotation transmission mechanism (not shown) that transmits the rotation of the right rear wheel 10 and the left rear wheel 12 to the drive shaft 77, the right rear wheel 10 is rotated when the user moves the cleaning device 2. And the rotation of the left rear wheel 12 can be used to rotate the front main brush 20 , the rear main brush 22 and the side brushes 150 .

In the above embodiment, the cleaning device 2 is configured without a drive source for rotating the right rear wheel 10 and the left rear wheel 12 . Alternatively, the cleaning device 2 may include wheel motors (not shown) for rotating the right rear wheel 10 and the left rear wheel 12 . In this case, the ECU 204 may control the operation of the wheel motors by controlling the electric power supplied from the plurality of battery packs 202 to the wheel motors. In this case, the switch operation portion 212 of the handle unit 6 may be provided with a button for the user to switch on/off the wheel motor. Alternatively, in this case, the cleaning device 2 may be configured as a self-propelled cleaning device without the handle unit 6 .

In the above-described embodiment, the cleaning device 2 is a so-called sweeper type cleaning device that includes a front wheel 8, a right rear wheel 10, and a left rear wheel 12, and the user holds the handle unit 6 and pushes it from behind. A configuration has been described. The cleaning device 2 may be a scrubber, polisher or the like. Alternatively, the cleaning device 2 may be a dust collector, robot cleaner, or the like that does not include the handle unit 6 . Alternatively, the cleaning device 2 may be a hand-held cleaning device, such as a handy cleaner or mop, which does not have the front wheel 8, the right rear wheel 10, and the left rear wheel 12.

In the above embodiment, the rotation axis when the main brush support member 63 rotates with respect to the chassis 14 is substantially coaxial with the rotation axis when the front main brush 20 rotates with respect to the chassis 14, The configuration in which only the rear main brush 22 moves vertically with respect to the chassis 14 according to the operation of the main brush lifting lever 94 has been described. In contrast to this, the rotation axis when the main brush support member 63 rotates with respect to the chassis 14 is arranged at a position different from the rotation axis when the front main brush 20 rotates with respect to the chassis 14 . Alternatively, both the front main brush 20 and the rear main brush 22 may move vertically with respect to the chassis 14 in accordance with the operation of the main brush lifting lever 94 .

In the above examples, the front main brush 20, the rear main brush 22, and/or the side brushes 150 may be different types of brushes than those described above.

As described above, in one or more embodiments, the cleaning device 2 includes the brush shaft 24a (example of the first brush shaft) extending in the left-right direction, and the brush bristles 24b (first brush shaft) held by the brush shaft 24a. a front main brush 20 (example of a first brush), a brush shaft 28a (example of a second brush shaft) extending in the horizontal direction, and brush bristles 28b (second brush shaft) held by the brush shaft 28a One end of a brush shaft 24a is detachably attached to a rear main brush 22 (example of a second brush) having a rear main brush 22 (example of a brush body), and a driven shaft 40 having a first shape (example of a first brush attachment). member) and one end of the brush shaft 28a is detachably attached, and has a driven shaft 44 (an example of a second brush mounting member) having a second shape. The one end of the brush shaft 24a has a first corresponding shape corresponding to the first shape. The one end of the brush shaft 28a has a second corresponding shape corresponding to the second shape. The other end of the brush shaft 24a has a second corresponding shape.

According to the above configuration, the roll brush 24 of the front main brush 20 can be used by attaching one end of the brush shaft 24a to the driven shaft 40, and reversing the horizontal direction so that the brush shaft 24a The other end can also be attached to the driven shaft 44 and used as the rear main brush 22 . A common roll brush 24 can be used for the front main brush 20 and the rear main brush 22 .

In one or more embodiments, one of the first shape and the first corresponding shape comprises a first convex shape (eg, the shape of engagement portion 40b). The other of the first shape and the first corresponding shape has a first concave shape (for example, the shape of the engaging groove 24d) into which the first convex shape fits. One of the second shape and the second corresponding shape has a second convex shape (for example, the shape of the engaging portion 44b). The other of the second shape and the second corresponding shape has a second concave shape (for example, the shape of the engaging groove 24f and the engaging groove 28f) into which the second convex shape fits.

According to the above configuration, torque can be transmitted between the driven shaft 40 and the front main brush 20 by fitting the first convex shape into the first concave shape. Moreover, torque can be transmitted between the driven shaft 44 and the rear main brush 22 by fitting the second convex shape into the second concave shape.

In one or more embodiments, the first shape of driven shaft 40 comprises a first convex shape (eg, the shape of engagement portion 40b). The first corresponding shape of the one end of the brush shaft 24a has a first concave shape (for example, the shape of the engaging groove 24d). The second shape of the driven shaft 44 has a second convex shape (for example, the shape of the engaging portion 44b). A second corresponding shape of the one end of the brush shaft 28a and the other end of the brush shaft 24a has a second concave shape (for example, the shape of the engagement groove 24f, the engagement groove 28f).

According to the above configuration, it is possible to easily align the front main brush 20 with the driven shaft 40 and easily align the rear main brush 22 with the driven shaft 44 .

In one or more embodiments, the first convex shape (eg, the shape of the engaging portion 40b) has a linear first rib shape extending along the radial direction. The second convex shape (for example, the shape of the engaging portion 44b) has a plurality of linear second rib shapes extending along the radial direction and inclined with respect to each other.

According to the above configuration, the first convex shape and the second convex shape can be realized with a simple configuration.

In one or more embodiments, the rib width of the first rib shape is greater than the rib width of the second rib shape.

If the rib width of the first rib shape is smaller than the rib width of the second rib shape, the first rib shape can also fit into the second concave shape that the second rib shape fits. In this case, one end of the brush shaft 28a may be attached to the driven shaft 40 by mistake. According to the above configuration, since the rib width of the first rib shape is larger than the rib width of the second rib shape, the first rib shape fits into the second concave shape into which the second rib shape fits. I can't. With such a configuration, it is possible to prevent one end of the brush shaft 28 a from being attached to the driven shaft 40 by mistake.

In one or more embodiments, the front main brush 20 further includes a brush cap 26 (an example of a first brush cap) that covers the other end of the brush shaft 24a.

According to the above configuration, the brush cap 26 covers the second corresponding shape of the other end of the brush shaft 24a. The front main brush 20 can be stably attached by forming the brush cap 26 into a shape corresponding to the shape of the attachment portion of the other end of the front main brush 20 .

In one or more embodiments, the cleaning device 2 includes a laterally movable plunger pin 48 (example of a first plunger) to which the other end of the brush shaft 24a is attached, and a brush shaft A plunger pin 54 (an example of a second plunger) is attached to the other end of 28a and is movable in the left-right direction.

According to the above configuration, the attaching and detaching work of the front main brush 20 and the rear main brush 22 can be made easier.

In one or more embodiments, bristles 24b (an example of first bristles) are spirally rotated in a first direction from said one end of brush shaft 24a toward the center of brush shaft 24a. The bristles are planted on the surface of the brush shaft 24a in a spiral shape rotating from the other end of the brush shaft 24a toward the center in a second direction opposite to the first direction. The brush bristles 28b (example of second brush bristles) are planted on the surface of the brush shaft 28a in a spiral shape rotating in the second direction from the one end of the brush shaft 28a toward the center. are planted on the surface of the brush shaft 28a in a spiral manner rotating in the first direction toward the center from the other end of the brush shaft 28a.

According to the above configuration, even if the front main brush 20 and the rear main brush 22 each have a so-called V-shaped flocking pattern, the roll brush 24 common to the front main brush 20 and the rear main brush 22 can be used. can be used.

In one or more embodiments, the cleaning device 2 includes a drive shaft 77, a front main brush rotation transmission mechanism 81 (an example of a first rotation transmission mechanism) that transmits rotation of the drive shaft 77 to the driven shaft 40, A rear main brush rotation transmission mechanism 83 (an example of a second rotation transmission mechanism) that transmits rotation of the drive shaft 77 to the driven shaft 44 is provided. When drive shaft 77 rotates, driven shaft 40 and driven shaft 44 rotate in opposite directions.

According to the above configuration, since the front main brush 20 and the rear main brush 22 rotate in opposite directions, dirt and dust on the work surface can be effectively swept up.

In one or more embodiments, the cleaning device 2 is supported on front wheels 8, right rear wheels 10 and left rear wheels 12 (examples of wheels) and front wheels 8, right rear wheels 10 and left rear wheels 12. A chassis 14 is provided.

According to the above configuration, in the cleaning device 2 that cleans while moving on the work surface with the front wheels 8, the right rear wheels 10 and the left rear wheels 12, the roll brushes 24 common to the front main brush 20 and the rear main brush 22 can be enabled.

In one or more embodiments, cleaning apparatus 2 further includes a handle unit 6 (an example of a handle) that extends rearwardly and upwardly from undercarriage 14 and is grippable by a user.

According to the above configuration, it is possible to use the roll brush 24 common to the front main brush 20 and the rear main brush 22 in the cleaning device 2 operated by the user holding the handle unit 6 .

2: cleaning device 4: main unit 6: handle unit 8: front wheel 8a: wheel 8b: support 9: headlight 10: right rear wheel 12: left rear wheel 13: dust container 13a: opening 13b: partition 13c: Lower storage chamber 13d: Upper storage chamber 13e: Notch 13f: Engagement groove 13g: Latch 14: Chassis 16: Right rear wheel plate 18: Left rear wheel plate 20: Front main brush 22: Rear main brush 23: Main brush unit 24: Roll brush 24a: Brush shaft 24b: Brush bristles 24c: Cylindrical groove 24d: Engagement groove 24e: Cylindrical groove 24f: Engagement groove 26: Brush cap 26a: Cap portion 26b: Sliding groove 26c: Cylindrical portion 26d: Engaging Joining portion 28: Roll brush 28a: Brush shaft 28b: Brush bristles 28c: Cylindrical groove 28d: Engagement groove 28e: Cylindrical groove 28f: Engagement groove 30: Brush cap 30a: Cap portion 30b: Sliding groove 30c: Cylindrical portion 30d : Engaging portion 32 : Right front brush mounting portion 34 : Left front brush mounting portion 36 : Right rear brush mounting portion 38 : Left rear brush mounting portion 40 : Driven shaft 40a : Cylindrical portion 40b : Engaging portion 42 : Holder 42a : Cylindrical portion 44: driven shaft 44a: cylindrical portion 44b: engaging portion 46: holder 48: plunger pin 50: holder 50a: cylindrical portion 52: compression spring 54: plunger pin 56: holder 58: compression spring 60: right brush plate 60a: cam Piece 60b : Long hole 62 : Left brush plate 63 : Main brush support member 64 : Link member 66 : Right front opening 66a : Upper edge 66b : Lower edge 68 : Right rear opening 70 : Left front opening 70a : Upper edge 70b : Lower edge 72 : Left rear opening 74 : Brush motor 76 : Reduction mechanism 77 : Drive shaft 78 : Drive pulley 80 : Guide pulley 81 : Front main brush rotation transmission mechanism 82 : Front driven pulley 83 : Rear main brush rotation transmission mechanism 84 : Rear driven Pulley 85 : Main brush rotation transmission mechanism 86 : Tensioner pulley 88 : Tensioner plate 88a : Rotating shaft 90 : Tension spring 92 : Main driving belt 94 : Main brush lifting lever 94a : Operation arm 94b : Grip 94c : Shutter support 94d : Pin support portion 94e: Spring support portion 94f: Drive arm 94g: Cam protrusion 95: Main brush rotation mechanism 96: Right Handle plate 96a : Positioning hole 96b : Long hole 97 : Main brush operating portion 98 : Bolt 100 : Positioning pin 102 : First washer 104 : Second washer 106 : Compression spring 108 : Body cover 108a : Lever opening 108b : Roller opening 108c: Battery opening 108d: Screw 110: Shutter member 110a: Long hole 112: Engagement shaft 114: Duct 114a: Latch receiver 114b: Inlet 114c: Filter unit mounting portion 114d: Air flow path 114e: Outlet 116: Opening 118: Seal member 120: Filter unit 122: Fan unit 124: Filter holder 124a: Air vent 124b: Inner upper filter holding portion 124c: Inner lower filter holding portion 124d: Inner right guide rib 124e: Inner left guide rib 124f: Outer right Filter holding portion 124g: Outer left filter holding portion 124h: Motor holding portion 124i: Seal holding portion 126: Main filter 126a: Filter main body 126b: Filter frame 126c: Upper engaging portion 126d: Lower engaging portion 128: Sponge filter 130: Pre-filter 130a : Fabric filter 130b : Filter frame 130c : Right engaging portion 130d : Left engaging portion 132 : Filter motor 132a : Upper output shaft 132b : Lower output shaft 138 : Motor cover 140 : Seal member 142 : Suction fan 144 : Silent box 144a : Fan housing chamber 144b : First expansion chamber 144c : Second expansion chamber 144d : First partition wall 144e : Second partition wall 146 : Fan motor 146a : Output shaft 148 : Plate fan 150 : Side brush 150a : Brush cup 150b : Brush bristles 150c : Base portion 150d : Support portion 150e : Bevel surface 150f : Engagement hole 150g : Through hole 150h : Outer engagement tube 150i : Operation piece 150j : Engagement claw 151 : Side brush engagement mechanism 152 : Side brush unit 153 : Side brush fitting mechanism 154 : Brush holder 154a : Bottom plate portion 154b : Side plate portion 154c : Clutch claw 154d : Inner engagement cylinder 154e : Engagement hole 155 : Clutch mechanism 156 : Brush pulley 156a : Inner wall portion 156b : Outer wall portion 156c : Connecting portion 156d : Drum portion 156e : Reinforcement rib 156f : Clutch rib 158: movable shaft 160: brush base 160a: first inner wall portion 160b: second inner wall portion 160c: outer wall portion 160d: reinforcing rib 162: first guide pulley 163: side brush rotation transmission mechanism 164: second guide pulley 166: relay Pulley 168 : Sub drive belt 170 : Connection pin 172 : Shaft cable 172a : Cable connector 173 : Side brush moving mechanism 174 : Guide pulley 176 : Compression spring 178 : Brush operation cable 178a : Outer cable 178b : Inner cable 180 : Side brush operation Portion 182: Case 182a: Engaging groove 184: Side brush lifting lever 184a: Lever main body 184b: Switch supporting portion 184c: Rotating shaft 186: Lock-off switch 186a: Engaging claw 188: Cable holder 188a: Supporting portion 188b: Guide Groove 188c: stopper portion 190: adjustment bolt 190a: bolt 190b: adjustment knob 192: compression spring 194: nut 196: roller 198: battery box 200: battery mounting portion 202: battery pack 204: ECU
206: Control circuit board 208: Case 210: Handle frame 210a: Right straight portion 210b: Left straight portion 210c: Upper straight portion 210d: Right connecting portion 210e: Left connecting portion 212: Switch operating portion 214: Main power switch 214a: Base 214b: Knob portion 214c: Recessed portion 216: Lock-off button 218: Brush rotation speed switching button 220: Brush rotation speed indicator 222: Fan air volume switching button 224: Fan air volume indicator 226: Illumination button 228: Illumination indicator lamp 230: Dust remover Button 232: Dust removal indicator lamp 234: Battery level display button 236: Battery level indicator 238: Right handle mounting portion 240: Left handle mounting portion 242: Left handle plate 244: Body-side cam member 244a: Inner cylindrical portion 244b: Cam portion 244 c : tooth surface 246 : handle-side cam member 246 a : handle support portion 246 b : outer cylindrical portion 246 c : tooth surface 248 : cover member 248 a : handle support portion 248 b : shaft support portion 250 : connecting shaft 250 a : locking portion 252 : Nut 254 : Connecting pipe 256 : Main body side cam member 256a : Inner cylindrical portion 256b : Cam portion 256c : Tooth surface 258 : Handle side cam member 258a : Handle support portion 258b : Outer cylindrical portion 258c : Tooth surface 260 : Cover member 260a : Handle support portion 260b : Lever receiving portion 260c : Guide rib 260d : Cam surface 262 : Lever member 262a : Operating portion 262b : Shaft support portion 262c : Support pin 262d : Engagement portion 262e : First cam surface 262f : Second cam surface 264: Battery cover 264a: Waterproof rib 264b: Permanent magnet 266: Grip

Claims (11)

A cleaning device,
a first brush shaft extending in the left-right direction; a first brush including a first brush body held by the first brush shaft;
a second brush shaft extending in the left-right direction; a second brush including a second brush body held by the second brush shaft;
a first brush attachment member having a first shape, to which one end of the first brush shaft is detachably attached;
one end of the second brush shaft is detachably attached and includes a second brush mounting member having a second shape,
the one end of the first brush shaft has a first corresponding shape corresponding to the first shape,
the one end of the second brush shaft has a second corresponding shape corresponding to the second shape;
The cleaning device, wherein the other end of the first brush shaft has the second corresponding shape. one of the first shape and the first corresponding shape comprises a first convex shape;
The other of the first shape and the first corresponding shape has a first concave shape into which the first convex shape fits,
one of the second shape and the second corresponding shape comprises a second convex shape;
2. The cleaning device of claim 1, wherein the other of said second shape and said second counterpart comprises a second concave shape into which said second convex shape fits. wherein the first shape comprises the first convex shape;
The first corresponding shape comprises the first concave shape,
the second shape comprises the second convex shape;
3. The cleaning device of claim 2, wherein said second counterpart comprises said second concave shape. The first convex shape has a linear first rib shape extending along the radial direction,
4. A cleaning device according to claim 2 or 3, wherein said second convex shape comprises a plurality of linear second rib shapes each extending along a radial direction and slanted with respect to each other. 5. The cleaning device of claim 4, wherein the rib width of said first rib shape is greater than the rib width of said second rib shape. 6. The cleaning device according to any one of claims 1 to 5, wherein said first brush further comprises a first brush cap covering said other end of said first brush shaft. a first plunger to which the other end of the first brush shaft is attached and which is movable in the left-right direction;
7. The cleaning device according to any one of claims 1 to 6, further comprising a laterally movable second plunger to which the other end of the second brush shaft is attached. The first brush body is planted on the surface of the first brush shaft in a spiral shape rotating in a first direction from the one end of the first brush shaft toward the center, and first brush bristles that are planted on the surface of the first brush shaft in a spiral shape that rotates in a second direction opposite to the first direction from the other end toward the center of the
The second brush body is planted on the surface of the second brush shaft in a spiral shape rotating in the second direction from the one end of the second brush shaft toward the center, and the second brush 8. The second brush shaft according to any one of claims 1 to 7, further comprising second brush bristles that are planted on the surface of the second brush shaft in a spiral manner that rotates in the first direction from the other end of the shaft toward the center. Item 1 cleaning device. a drive shaft;
a first rotation transmission mechanism for transmitting rotation of the drive shaft to the first brush mounting member;
a second rotation transmission mechanism for transmitting rotation of the drive shaft to the second brush mounting member;
9. The cleaning device of any one of claims 1 to 8, wherein when the drive shaft rotates, the first brush mounting member and the second brush mounting member rotate in opposite directions. wheels and
A chassis supported by the wheels is further provided. 10. A cleaning device according to any one of claims 1-9. 11. The cleaning device of claim 10, further comprising a handle extending rearwardly and upwardly from said chassis and grippable by a user.

Images