JP2022052176A - Hand-held suction device - Google Patents

Abstract

To provide a hand-held suction device that enables refuse adhered to a floor to be easily removed.SOLUTION: A hand-held suction device 1 comprises: a blower 2 sucking air; an air intake duct 3 for taking refuse of a floor F from an opening end 32a by making the air sucked by the blower 2 flow into the inside; wheels 51, 52 rotating in a first direction with the advance of the air intake duct 3, and rotating in the second direction being the direction opposite to the first direction with the retreat of the air intake duct 3; a brush body 6 provided at the back side of the opening end 32a of the air intake duct 3, and rotating to sweep the refuse D1, D2 of the floor F; and a rotating mechanism 7 rotating the brush body 6 on the basis of the rotation of the wheels 51, 52. The rotating mechanism 7 is configured to rotate the brush body 6 in the second direction when the wheels 51, 52 rotate in the first direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a handheld suction device that sucks up and removes dust on the floor surface.

A handheld suction device is known as a device for removing dust such as fallen leaves. For example, the handheld suction device disclosed in Patent Document 1 is configured to suck up and remove dust on the floor surface by the action of air sucked from the open end of the suction pipe.

Jikkenhei 6-60617 Gazette

Some of the dust that is to be removed by the handheld suction device is firmly attached to the floor surface, such as wet leaves on cobblestones. It is difficult to remove such dust only by the action of air, and the conventional hand-held suction device leaves room for improvement.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a handheld suction device capable of easily removing dust adhering to a floor surface.

In order to achieve the above-mentioned object, the present invention is a hand-held suction device that sucks up and removes dust on the floor surface, a blower that sucks air, and a cylinder whose opening end extends in a predetermined direction toward the floor surface. An intake duct that is formed in a shape and takes in dust on the floor surface from the opening end by allowing air sucked by the blower to flow inside, and at least one wheel that comes into contact with the floor surface and supports the intake duct. Wheels that rotate in the first direction as the duct advances and rotate in the second direction, which is the opposite direction to the first direction as the intake duct retracts, and wheels provided near the rear of the open end of the intake duct and rotate. It is equipped with a cleaning body that sweeps dust on the floor surface and a rotating mechanism that rotates the cleaning body based on the rotation of the wheels. The rotation mechanism is configured to rotate the cleaning body in the second direction when the wheels are rotating in the first direction.

In the handheld suction device configured as described above, when the user advances the intake duct, the wheels rotate in the first direction, and the cleaning body rotates in the second direction accordingly. That is, the cleaning body provided near the rear of the open end of the intake duct operates to sweep the dust on the floor surface forward (that is, toward the center of the open end of the intake duct). This promotes the intake of dust at the open end of the intake duct, and makes it possible to reliably remove the dust. Dust that is firmly attached to the floor surface, such as the wet fallen leaves described above, can be removed more reliably by advancing the intake duct so that the cleaning body repeatedly passes over the dust. ..

In addition, in this specification, the "floor surface" means the surface where dust exists, and is not limited to the one existing indoors. Therefore, the handheld suction device according to the present invention can be used for removing dust existing on the floor surface indoors, or can be used for removing dust existing on the ground outdoors.

In the handheld suction device, the rotation mechanism may be configured to rotate the cleaning body in the first direction when the wheels are rotating in the second direction.

In the handheld suction device configured as described above, when the user retracts the intake duct, the wheels rotate in the second direction, and the cleaning body rotates in the first direction accordingly. That is, when the intake duct is retracted, the cleaning body rotates in the direction opposite to that when the intake duct is advanced. Therefore, by moving the intake duct forward and backward so that the cleaning body repeatedly passes over the dust on the floor surface, the dust can be swept in two directions. As a result, it becomes possible to reliably remove the dust firmly adhering to the floor surface.

In the handheld suction device, a notch portion recessed inward may be formed at the rear end portion of the open end of the intake duct, and at least a part of the cleaning body may be arranged in the notch portion.

In the handheld suction device configured in this way, it is possible to make the configuration near the opening end of the intake duct compact and further promote the uptake of dust at the opening end.

In the above-mentioned handheld suction device, the intake duct is configured so that the distance between the front end portion of the opening end and the floor surface can be changed by rotating around the first axis, and the wheels and the cleaning body are both the first. It may be configured to rotate about an axis.

In the handheld suction device configured in this way, the intake duct is rotated around the first axis to change the distance between the front end of the opening end and the floor surface, so that the distance between the opening end and the floor surface is changed. The cross-sectional area of the formed flow path can be changed to adjust the air flow velocity. This makes it possible to adjust the suction force of air acting on the dust.

Further, the wheel and the cleaning body are also configured to rotate about the first axis. According to this configuration, the positional relationship between the cleaning body and the floor surface does not change when the wheels are rotated to move the intake duct or when the intake duct is rotated. Therefore, it is possible to make the degree of contact of the cleaning body with the floor surface substantially constant, and to make the force acting on the dust on the floor surface from the cleaning body and the frictional force received by the cleaning body from the floor surface substantially constant.

In the handheld suction device, the intake duct is configured to be able to change the distance between the front end of the opening end and the floor surface by rotating around the first axis, and the wheels rotate around the first axis. The cleaning body may be configured to rotate about a second axis separated from the first axis in a predetermined direction.

In the handheld suction device configured in this way, the intake duct is rotated around the first axis to change the distance between the front end of the opening end and the floor surface, so that the distance between the opening end and the floor surface is changed. The cross-sectional area of the formed flow path can be changed to adjust the air flow velocity. This makes it possible to adjust the suction force of air acting on the dust.

Further, the wheel is configured to rotate about the first axis, and the cleaning body is configured to rotate about the second axis separated from the first axis in a predetermined direction. According to this configuration, when the intake duct is rotated around the first axis, the positional relationship between the cleaning body and the floor surface changes. Therefore, it is possible to change the degree of contact of the cleaning body with the floor surface by rotating the intake duct, and to adjust the force acting on the dust on the floor surface from the cleaning body and the frictional force that the cleaning body receives from the floor surface. Become.

In the handheld suction device, the cleaning body may have a first cleaning body arranged on one side of a single wheel and a second cleaning body arranged on the other side of the wheel. ..

In the handheld suction device configured in this way, the degree of contact of the first cleaning body and the second cleaning body with the floor surface is changed by inclining a single wheel to one side or the other side. Will be possible. As a result, it becomes possible to adjust the force acting on the dust on the floor surface from the first cleaning body and the second cleaning body and the frictional force received by the first cleaning body and the second cleaning body from the floor surface.

In the handheld suction device, the wheel has an elastic portion that expands and contracts in response to an external force, and the elastic portion may expand and contract in the radial direction of the wheel.

In the handheld suction device configured as described above, the positional relationship between the cleaning body and the floor surface changes by changing the amount of expansion and contraction of the elastic portion in the radial direction of the wheel. As a result, it becomes possible to adjust the force acting on the dust on the floor surface from the cleaning body and the frictional force received by the cleaning body from the floor surface.

In the handheld suction device, the intake duct has a duct main body and an extension duct that is detachably provided to the duct main body, and the cleaning body may be fixed to the extension duct.

In the handheld suction device configured as described above, by removing the extension duct from the duct main body, it is possible to form a form that does not use a cleaning body. This makes it possible to select an appropriate form of the handheld suction device according to the usage environment.

According to the present invention, it becomes possible to provide a handheld suction device that can easily remove dust adhering to the floor surface.

It is a perspective view of the hand-held suction device which concerns on an example of 1st Embodiment. It is an exploded perspective view of the intake duct and the cleaning unit of FIG. It is a bottom view of the cleaning unit of FIG. It is sectional drawing which shows the IV-IV cross section of FIG. It is a side view of the intake duct and the cleaning unit of FIG. It is a side view of the intake duct and the cleaning unit which concerns on the modification of 1st Embodiment. It is a perspective view of the hand-held suction device which concerns on an example of 2nd Embodiment. It is a bottom view of the cleaning unit of FIG. 7. It is sectional drawing of the cleaning unit of FIG. It is a side view of the intake duct and a cleaning unit of FIG. 7. It is sectional drawing of the cleaning unit which concerns on the modification of 2nd Embodiment.

[First Embodiment]
First, with reference to FIG. 1, an outline of the handheld suction device 1 (hereinafter, also referred to as “suction device 1”) according to an example of the first embodiment will be described. FIG. 1 is a perspective view of the suction device 1 according to the first embodiment. The suction device 1 includes a blower 2, an intake duct 3, and a cleaning unit 4.

The blower 2 is a fluid device that sucks air from the suction port 2a by the torque generated by the drive source and blows out the air from the outlet 2b. The air outlet 2b is connected to an exhaust duct 11 extending to a dust collecting bag (not shown). The blower 2 is formed with a grip portion 21 that is gripped by the user when the suction device 1 is moved. As the drive source of the blower 2, for example, an engine driven by burning fuel or an electric motor driven by consuming electric power can be adopted.

The intake duct 3 is formed in a cylindrical shape extending between the end portion 31a and the opening end 32a. The outer diameter of the open end 32a is larger than the outer diameter of the end 31a. The end portion 31a is connected to the suction port 2a of the blower 2.

The cleaning unit 4 is provided in the vicinity of the open end 32a of the intake duct 3. As will be described later, the cleaning unit 4 has wheels 51, 52 and a brush body 6 that rotate around an axle 53.

The user uses the suction device 1 in a state where the grip portion 21 of the blower 2 is gripped and the wheels 51 and 52 are in contact with the floor surface F. As a result, the intake duct 3 is arranged so as to face the floor surface F with the open end 32a and extend diagonally upward from the open end 32a to the end 31a.

In the present specification, the vertical upward direction is referred to as "up", and the vertical downward direction is referred to as "down". Further, the direction in which the axle 53 extends and the right direction when viewed from the user holding the grip portion 21 is referred to as "right", and the left direction is referred to as "left". Further, a direction orthogonal to the vertical direction and the horizontal direction, in which the user holding the grip portion 21 moves forward is referred to as "front", and the direction in which the user moves backward is referred to as "rear".

The blower 2 sucks air through the intake duct 3 connected to the suction port 2a. As a result, the dust D1 is taken in from the open end 32a together with the air and removed from the floor surface F. The dust D1 that has passed through the inside of the intake duct 3 and reached the blower 2 is blown out from the outlet 2b to the exhaust duct 11 and collected in the dust collection bag.

The cleaning unit 4 functions effectively for dust D2, which is difficult to remove only by the action of air taken in from the open end 32a. Specifically, the brush body 6 of the cleaning unit 4 rotates and operates to sweep the dust D2.

Next, the configuration of the suction device 1 will be described with reference to FIGS. 2 to 4. FIG. 2 is an exploded perspective view of the intake duct 3 and the cleaning unit 4. FIG. 3 is a bottom view of the cleaning unit 4, and FIG. 4 is a cross-sectional view showing an IV-IV cross section of FIG.

As shown in FIG. 2, the intake duct 3 has a duct main body 31 and an extension duct 32. The duct main body 31 and the extension duct 32 are formed in a cylindrical shape extending along the center line CL. The end portion 31b of the duct main body 31 and the end portion 32b of the extension duct 32 are surfaces substantially perpendicular to the center line CL, and both are inserted and arranged inside the fixing ring 37. The extension duct 32 is detachably provided with respect to the duct main body 31 by fastening with a fixing ring 37 or by opening the fixing ring 37.

The open end 32a of the intake duct 3 described above corresponds to the end of the extension duct 32. Of the opening end 32a, the vicinity of the front end portion 32a1 is composed of a surface substantially perpendicular to the center line CL, and the vicinity of the rear end portion 32a2 is composed of a surface inclined with respect to the center line CL. The rear end portion 32a2 is formed with a notch portion 35 recessed toward the inside of the extension duct 32.

As shown in FIGS. 3 and 4, the cleaning unit 4 has a frame 41 and a fixing ring 43 fixed to the frame 41. The cleaning unit 4 further includes wheels 51 and 52, a brush body 6, and a rotation mechanism 7.

The wheels 51 and 52 are formed in a disk shape, and as shown in FIG. 4, through holes 51a and 52a are formed in the central portion thereof. The wheels 51 and 52 are arranged so as to face each other with the frame 41 interposed therebetween. An axle 53 is inserted through the through holes 51a and 52a of the frame 41 and the wheels 51 and 52, and the wheels 51 and 52 are fixed to the axle 53. That is, when the wheels 51 and 52 rotate around the axle 53, the axle 53 also rotates accordingly. The axle 53 is an example of an embodiment of the "first axis" according to the present invention.

The brush body 6 is an example of the "cleaning body" according to the present invention. The brush body 6 is arranged between the wheel 51 and the wheel 52 at a position surrounded by the frame 41. The brush body 6 has a tubular body 61 and a plurality of hair bundles 62. The tubular body 61 is formed in a cylindrical shape, and the axle 53 is inserted through the inside thereof. The hair bundle 62 is an aggregate of flexible chemical fibers (for example, polypropylene fiber, polyester fiber). The roots of the hair bundles 62 are fixed to the tubular body 61, and the hair bundles 62 are spirally arranged on the peripheral side surfaces of the tubular body 61.

The rotation mechanism 7 is arranged at both ends of the brush body 6. As shown in FIG. 4, the rotation mechanism 7 has a planetary gear mechanism including a sun gear 71, a planetary gear 73, and an internal gear 75. An axle 53 is inserted in the center of the sun gear 71, and the sun gear 71 is fixed to the axle 53. A support shaft 76 is inserted through the center of the planetary gear 73 that meshes with the sun gear 71. The support shaft 76 is fixed to the frame 41, and the planetary gear 73 can rotate around the support shaft 76. Therefore, the planetary gear 73 rotates around the support shaft 76 without revolving around the sun gear 71. The internal gear 75 that meshes with the planetary gear 73 is connected to the end of the tubular body 61 of the brush body 6 by the connecting body 77. As a result, the rotation of the internal gear 75 is transmitted to the brush body 6.

The cleaning unit 4 having such a configuration is detachably provided with respect to the extension duct 32 by fastening with the fixing ring 43 or by opening the fixing ring 43. When the cleaning unit 4 is attached to the extension duct 32, the wheels 51 are arranged to the right of the intake duct 3 and the wheels 52 are arranged to the left of the intake duct 3, as shown in FIG. Further, the brush body 6 is arranged in the notch 35 of the extension duct 32.

Next, a usage mode of the suction device 1 will be described with reference to FIG. FIG. 5 is a side view of the intake duct 3 and the cleaning unit 4. In order to facilitate the understanding of the explanation, FIG. 5 shows the vicinity of the cleaning unit 4 in an enlarged manner, and omits the illustration of the wheel 52, the left rotation mechanism 7, and the frame 41.

As described above, the suction device 1 is used in a state where the wheels 51 and 52 are in contact with the floor surface F. When the wheels 51 and 52 come into contact with the floor surface F, the tip of the hair bundle 62 at the lower part of the brush body 6 also comes into contact with the floor surface F.

When the user pushes the grip portion 21 (see FIG. 1) of the blower 2 to advance the intake duct 3, the wheels 51 and 52 in contact with the floor surface F are aligned with the axle 53 as the arrow in FIG. 5 (a). It rotates in the R11 direction (that is, in the counterclockwise direction). Further, when the user pulls the grip portion 21 of the blower 2 to retract the intake duct 3, the wheels 51 and 52 rotate in the direction of arrow R12 in FIG. 5A (that is, in the clockwise direction) with the axle 53 as the center. Rotate to. The counterclockwise direction in FIG. 5A is an example of the "first direction" embodiment of the present invention, and the clockwise direction in FIG. 5A is the "second direction" according to the present invention. Is an example of the embodiment.

When the intake duct 3 advances and the wheels 51 and 52 rotate in the direction of arrow R11, the axle 53 also rotates in the same direction. The rotation mechanism 7 (see FIG. 4) rotates the brush body 6 in the direction opposite to the direction in which the axle 53 rotates due to the action of the planetary gear mechanism. That is, the rotation mechanism 7 rotates the brush body 6 around the axle 53 in the direction of arrow S11 (that is, in the clockwise direction). As a result, when the intake duct 3 is advancing, the brush body 6 operates so as to sweep the dust on the floor surface F forward by the hair bundle 62.

On the other hand, when the intake duct 3 retracts and the wheels 51 and 52 rotate in the direction of the arrow R12, the axle 53 also rotates in the same direction, and the rotation mechanism 7 moves the brush body 6 around the axle 53 in the direction of the arrow S12 (that is,). , Counterclockwise direction). As a result, when the intake duct 3 is retracted, the brush body 6 operates so as to sweep the dust on the floor surface F rearward by the hair bundle 62.

Further, the user can rotate the intake duct 3 in the direction of the arrow R11 or the arrow R12 around the axle 53 and arrange the intake duct 3 at an arbitrary position.

FIG. 5A shows an intake duct 3 arranged so that the distance between the front end portion 32a1 of the opening end 32a and the floor surface F is H1 which is relatively large. In this case, the cross-sectional area of the flow path formed between the opening end 32a and the floor surface F becomes relatively large, and as a result, the flow velocity of the air passing between the two is relatively large as shown by the arrow A1. It gets smaller.

FIG. 5B shows an intake duct 3 arranged so that the distance between the front end portion 32a1 of the opening end 32a and the floor surface F is H2, which is relatively small. In this case, the cross-sectional area of the flow path formed between the opening end 32a and the floor surface F becomes relatively small, and as a result, the flow velocity of the air passing between the two is relatively small as shown by the arrow A2. growing.

Next, the action and effect based on the first embodiment will be described.

In the suction device 1, when the user advances the intake duct 3, the wheels 51 and 52 rotate in the direction of arrow R11, and the brush body 6 rotates in the direction of arrow S11 accordingly. That is, the brush body 6 provided near the rear of the open end 32a of the intake duct 3 operates so as to sweep the dust on the floor surface F forward (that is, toward the center of the open end 32a of the intake duct 3). do. This promotes the intake of dust at the open end 32a of the intake duct 3, and makes it possible to reliably remove the dust. Dust that is firmly attached to the floor surface F such as wet leaves can be removed more reliably by advancing the intake duct 3 so that the brush body 6 repeatedly passes over the dust. Become.

Further, the rotation mechanism 7 is configured to rotate the cleaning body in the direction of the arrow S12 when the wheels 51 and 52 are rotating in the direction of the arrow R12.

In the suction device 1 configured as described above, when the user retracts the intake duct 3, the wheels 51 and 52 rotate in the direction of arrow R12, and the brush body 6 rotates in the direction of arrow S12 accordingly. That is, when the intake duct 3 is retracted, the brush body 6 rotates in the direction opposite to that when the intake duct 3 is advanced. Therefore, by moving the intake duct 3 forward and backward so that the brush body 6 repeatedly passes over the dust, the dust can be swept in two directions. As a result, it becomes possible to reliably remove the dust firmly adhering to the floor surface F.

Further, a notch 35 recessed inward is formed in the rear end 32a2 of the open end 32a of the intake duct 3, and at least a part of the brush body 6 is arranged in the notch 35.

In the suction device 1 configured in this way, the configuration near the open end 32a of the intake duct 3 is made compact, and the brush body 6 is arranged in the notch 35, so that the open end 32a, the brush body 6, and the ground are used. In some cases, by optimizing the angle between the opening end 32A and the ground, it becomes possible to further promote the uptake of dust at the opening end 32a.

Further, the intake duct 3 is configured so that the distance between the front end portion 32a1 of the opening end 32a and the floor surface F can be changed by rotating around the axle 53, and the wheels 51 and 52 and the brush body 6 are all axles. It is configured to rotate around 53.

In the suction device 1 configured in this way, the intake duct 3 is rotated around the axle 53 to change the distance between the front end portion 32a1 of the opening end 32a and the floor surface F, whereby the opening end 32a and the floor surface F are changed. The cross-sectional area of the flow path formed between and can be changed to adjust the flow velocity of air. This makes it possible to adjust the suction force of air acting on the dust.

Further, the wheels 51 and 52 and the brush body 6 are also configured to rotate about the axle 53. According to this configuration, the positional relationship between the brush body 6 and the floor surface F changes when the wheels 51 and 52 are rotated to move the intake duct 3 or when the intake duct 3 is rotated. There is no such thing. Therefore, the degree of contact of the brush body 6 with the floor surface is substantially constant, and the force of the brush body 6 acting on the dust on the floor surface F and the frictional force received by the brush body 6 from the floor surface F are substantially constant. Will be possible.

Further, the intake duct 3 has a duct main body 31 and an extension duct 32 that is detachably provided with respect to the duct main body 31, and the brush body 6 is fixed to the extension duct 32.

In the suction device 1 configured in this way, the extension duct 32 can be removed from the duct main body 31 so that the brush body 6 is not used. That is, the suction device 1 can be in a form of taking in dust from the end portion 31b of the duct main body 31. This makes it possible to select an appropriate form of the suction device 1 according to the usage environment.

[Modified example of the first embodiment]
Next, a modified example of the first embodiment will be described with reference to FIG. The modification is different from the first embodiment mainly in that the rotation axis of the sponge body 60, which is a cleaning body, is different from the rotation axes of the intake duct 3 and the wheels 51 and 52. Among the configurations of the modified examples, those having the same configurations as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

FIG. 6 is a side view of the intake duct 3 and the cleaning unit 40 according to the modified example of the first embodiment. In order to facilitate the understanding of the explanation, FIG. 6 shows the vicinity of the cleaning unit 40 in an enlarged manner, and omits the illustration of the wheel 52 and the frame 41.

The cleaning unit 40 according to the modified example has a sponge body 60. The sponge body 60 is an example of an embodiment of the "cleaning body" according to the present invention. The sponge body 60 is formed in a cylindrical shape, and has a porous body 63 having water absorption on its peripheral side surface.

The sponge body 60 is configured to rotate about a shaft 64. The shaft 64 is an example of the embodiment of the "second shaft" according to the present invention, and is separated from the axle 53. Specifically, the shaft 64 is arranged on the opening end 32a side of the axle 53 in the direction along the center line CL. According to this configuration, the shaft 64 is arranged on the floor surface F side by a distance d from the axle 53 in the vertical direction when the floor surface F and the bottom surface of the intake duct 3 are parallel (in some cases, the axle). It is also possible that the 53 is arranged on the opening end 32a side of the shaft 64 in the direction along the center line CL, or the shaft 64 and the axle 53 are separated from each other in the direction orthogonal to the center line CL). ..

When the intake duct 3 advances and the wheels 51 and 52 rotate in the direction of arrow R21 about the axle 53, the sponge body 60 rotates in the direction of arrow S21 (that is, in the clockwise direction) about the shaft 64. As a result, when the intake duct 3 is advancing, the sponge body 60 operates so as to sweep the dust on the floor surface F forward while absorbing the moisture on the floor surface F by the porous body 63.

On the other hand, when the intake duct 3 retracts and the wheels 51 and 52 rotate in the direction of arrow R22 about the axle 53, the sponge body 60 rotates in the direction of arrow S22 (that is, in the counterclockwise direction) about the axis 64. do. As a result, when the intake duct 3 is retracted, the sponge body 60 operates so as to sweep the dust on the floor surface F backward while absorbing the moisture on the floor surface F by the porous body 63.

Further, the user rotates the intake duct 3 in the direction of arrow R21 or the direction of arrow R22 around the axle 53, arranges the intake duct 3 at an arbitrary position, and the degree of contact of the sponge body 60 with the floor surface F. Can be changed.

FIG. 6A shows an intake duct 3 arranged so that the distance between the front end portion 32a1 of the opening end 32a and the floor surface F is H3, which is relatively large. In this case, the shaft 64 is arranged in front of the axle 53, and a gap of a distance H4 is formed between the lower end portion of the sponge body 60 and the floor surface F.

FIG. 6B shows an intake duct 3 arranged so that the distance between the front end portion 32a1 of the opening end 32a and the floor surface F is H5, which is relatively small. In this case, the shaft 64 is arranged substantially below the axle 53, and the lower end portion of the sponge body 60 comes into contact with the floor surface F.

In the modified example configured in this way, the intake duct 3 is rotated around the axle 53 to change the distance between the front end portion 32a1 of the opening end 32a and the floor surface F, whereby the opening end 32a and the floor surface F are obtained. The cross-sectional area of the flow path formed between the two can be changed to adjust the air flow velocity. This makes it possible to adjust the suction force of air acting on the dust.

Further, the wheels 51 and 52 rotate about the axle 53, and the sponge body 60 rotates about the shaft 64 separated from the axle 53 in the vertical direction when the floor surface F and the bottom surface of the intake duct 3 are parallel to each other. It is configured to do. According to this configuration, when the intake duct 3 is rotated around the axle 53, the positional relationship between the sponge body 60 and the floor surface F changes. Therefore, the degree of contact of the sponge body 60 with the floor surface F is changed by the rotation of the intake duct 3, and the force acting on the dust on the floor surface F from the sponge body 60 and the frictional force received by the sponge body 60 from the floor surface F. Can be adjusted.

[Second Embodiment]
Next, the handheld suction device 1A (hereinafter, also referred to as “suction device 1A”) according to an example of the second embodiment will be described with reference to FIGS. 7 to 9. The second embodiment is different from the first embodiment in that it mainly includes a single wheel 54 and the cleaning unit 8 includes brush bodies 65 and 66. Of the configurations of the second embodiment, the same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

FIG. 7 is a perspective view of the suction device 1A according to the second embodiment. FIG. 7 shows an enlarged view of the vicinity of the cleaning unit 8. FIG. 8 is a bottom view of the cleaning unit 8. FIG. 9 is a cross-sectional view of the cleaning unit 8 and shows a cross section of the cleaning unit 8 on the surface passing through the axle 55.

The cleaning unit 8 has a frame 81 and a fixing ring 43 fixed to the frame 81. The cleaning unit 8 further includes wheels 54, brush bodies 65, 66, and a rotation mechanism 7A.

As shown in FIG. 9, the wheel 54 is formed in an annular shape, and a part thereof is arranged at a position surrounded by the frame 81 of the cleaning unit 8. As will be described later, the wheels 54 rotate about the axle 55. The axle 55 is an example of the "first axis" according to the present invention.

The brush body 65 is arranged on the right side of the wheel 54, and the brush body 66 is arranged on the left side of the wheel 54. That is, the brush bodies 65 and 66 are arranged so as to face each other with the wheel 54 interposed therebetween. A part of the brush bodies 65 and 66 is arranged at a position surrounded by the frame 81 of the cleaning unit 8. The brush body 65 is an example of the "first cleaning body" according to the present invention, and the brush body 66 is an example of the "second cleaning body" according to the present invention.

The brush bodies 65 and 66 have a tubular body 67 and a plurality of hair bundles 62. As shown in FIG. 9, the tubular body 67 is formed in a cylindrical shape, and both ends thereof are covered with a plate 68. An axle 55 is inserted inside the cylinder 67. Further, the axle 55 penetrates the plate 68, and the plate 68 is fixed to the axle 55.

The rotation mechanism 7A is arranged inside the wheel 54. As shown in FIG. 9, the rotation mechanism 7A has a planetary gear mechanism including a sun gear 71A, a planetary gear 73A, and an internal gear 75A. An axle 55 is inserted in the center of the sun gear 71A, and the sun gear 71A is fixed to the axle 55. A support shaft 76A is inserted through the center of the planetary gear 73A that meshes with the sun gear 71A. The support shaft 76A is fixed to the frame 81 of the cleaning unit 8, and the planetary gear 73A can rotate around the support shaft 76A. Therefore, the planetary gear 73A rotates around the support shaft 76A without revolving around the sun gear 71A. The internal gear 75A that meshes with the planetary gear 73A is connected to the inner peripheral surface 54a of the wheel 54. As a result, the rotation of the internal gear 75A is transmitted to the brush bodies 65 and 66 via the planetary gear 73A, the sun gear 71A, and the axle 55.

Next, the usage mode of the suction device 1A will be described with reference to FIG. FIG. 10 is a side view of the intake duct 3 and the cleaning unit 8. For ease of understanding of the description, FIG. 10 shows an enlarged view of the vicinity of the cleaning unit 8.

The suction device 1A is used in a state where the wheel 54 is in contact with the floor surface F. When the wheels 51 and 52 come into contact with the floor surface F, the tip of the hair bundle 62 at the lower part of the brush bodies 65 and 66 also comes into contact with the floor surface F.

When the user pushes the grip portion 21 (see FIG. 1) of the blower 2 to advance the intake duct 3, the wheel 54 in contact with the floor surface F is centered on the axle 55 in the direction of arrow R31 in FIG. 10 (a). Rotate (ie, counterclockwise). Further, when the user pulls the grip portion 21 of the blower 2 to retract the intake duct 3, the wheel 54 rotates in the direction of arrow R32 (that is, in the clockwise direction) in FIG. 10A about the axle 55. do. The counterclockwise direction in FIG. 10A is an example of the "first direction" according to the present invention, and the clockwise direction in FIG. 10A is an example of the "second direction" according to the present invention. Is.

When the intake duct 3 advances and the wheel 54 rotates in the direction of arrow R31, the internal gear 75A (see FIG. 9) fixed to the wheel 54 also rotates in the same direction. The rotation mechanism 7A (see FIG. 9) rotates the brush bodies 65 and 66 in the direction opposite to the direction in which the wheels 54 rotate due to the action of the planetary gear mechanism. That is, the rotation mechanism 7 rotates the brush bodies 65 and 66 in the direction of arrow S31 (that is, in the clockwise direction) about the axle 55. As a result, when the intake duct 3 is advancing, the brush bodies 65 and 66 operate so as to sweep the dust on the floor surface F forward by the bristles 62.

On the other hand, when the intake duct 3 retracts and the wheel 54 rotates in the direction of arrow R32, the rotation mechanism 7A rotates the brush bodies 65 and 66 in the direction of arrow S32 (that is, in the counterclockwise direction) about the axle 55. Let me. As a result, when the intake duct 3 is retracted, the brush bodies 65 and 66 operate so as to sweep the dust on the floor surface F rearward by the bristles 62.

Further, the user can rotate the intake duct 3 in the direction of arrow R31 or the direction of arrow R32 around the axle 55, and arrange the intake duct 3 at an arbitrary position.

FIG. 10A shows an intake duct 3 arranged so that the distance between the front end portion 32a1 of the opening end 32a and the floor surface F is H6, which is relatively large. In this case, the cross-sectional area of the flow path formed between the opening end 32a and the floor surface F becomes relatively large, and as a result, the flow velocity of the air passing between the two is relatively large as shown by the arrow A3. It gets smaller.

FIG. 10B shows an intake duct 3 arranged so that the distance between the front end portion 32a1 of the opening end 32a and the floor surface F is H7, which is relatively small. In this case, the cross-sectional area of the flow path formed between the opening end 32a and the floor surface F becomes relatively small, and as a result, the flow velocity of the air passing between the two is relatively small as shown by the arrow A4. growing.

Further, in the suction device 1A, the degree of contact of the brush bodies 65 and 66 with the floor surface F can be changed by inclining the single wheel 54 to the right or left. As a result, it becomes possible to adjust the force acting on the dust on the floor surface F from the brush bodies 65 and 66 and the frictional force received by the brush bodies 65 and 66 from the floor surface F.

[Modified example of the second embodiment]
Next, a modified example of the second embodiment will be described with reference to FIG. The modification is different from the second embodiment mainly in that the wheel 56 has an elastic body 59. Among the configurations of the modified examples, the same components as those of the second embodiment are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

FIG. 11 is a cross-sectional view of the cleaning unit 80, showing a cross section of the cleaning unit 80 on a surface passing through the axle 55.

The wheel 56 of the cleaning unit 80 according to the modified example includes a wheel main body 57, an outer shell 58, and an elastic body 59. The wheel body 57 and the outer shell 58 are formed in an annular shape, and are members constituting the radial inner portion and the radial outer portion of the wheel 56, respectively. The internal gear 75A of the rotation mechanism 7A is connected to the inner peripheral surface 57a of the wheel body 57. The outer shell 58 is arranged so as to cover the peripheral side surface of the wheel body 57 with a predetermined gap.

The elastic body 59 is an example of the “elastic portion” according to the present invention, and is arranged between the wheel body 57 and the outer shell 58. The elastic body 59 is a member that can be expanded and contracted according to an applied external force, and for example, a member made of a rubber material or a metal spring can be adopted.

FIG. 11A shows a cleaning unit 80 when the external force applied to the elastic body 59 from above is relatively small. In this case, the amount of compression of the elastic body 59 in the vicinity of the floor surface F is relatively small. As a result, the distance between the axle 55 and the floor surface F is H8, which is relatively large.

On the other hand, FIG. 11B shows the cleaning unit 80 when the external force applied to the elastic body 59 from above is relatively large. In this case, the amount of compression of the elastic body 59 in the vicinity of the floor surface F is relatively large. As a result, the distance between the axle 55 and the floor surface F becomes H9, which is relatively small.

In the suction device configured as described above, the positional relationship between the brush bodies 65 and 66 and the floor surface F changes by changing the amount of expansion and contraction of the elastic body 59 in the radial direction of the wheels 56. As a result, it becomes possible to adjust the force acting on the dust on the floor surface F from the brush bodies 65 and 66 and the frictional force received by the brush bodies 65 and 66 from the floor surface F.

The embodiments and modifications described above are useful for sucking wet leaves and the like that are difficult to suck by operating the suction device in the direction of the arrow for the wet leaves and the like adhering to the recesses of the stone pavement that are often found in Europe. You may do it.

Further, the embodiments and modifications described above are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Each element included in the embodiment and its arrangement, material, condition, shape, size, and the like are not limited to those exemplified, and can be appropriately changed.

1,1A Handheld suction device 2 Blower 3 Intake duct 31 Duct body 32 Extension duct 32a Open end 35 Notch 51, 52, 54, 56 Wheel 53, 55 Axle (1st axis)
59 Elastic body (elastic part)
6 Brush body (cleaning body)
60 Sponge body (cleaning body)
65 Brush body (cleaning body, first cleaning body)
66 Brush body (cleaning body, second cleaning body)
7,7A Rotation mechanism D1, D2 Dust F Floor surface

Claims (8)

A handheld suction device (1,1A) that sucks up and removes dust on the floor.
Blower (2) that sucks air and
Intake air that is formed in a cylindrical shape with the open end (32a) extending in a predetermined direction toward the floor surface, and takes in dust on the floor surface from the open end (32a) by allowing air sucked by the blower (2) to flow inside. Duct (3) and
At least one wheel (51, 52, 54, 56) that comes into contact with the floor surface and supports the intake duct (3), and rotates in the first direction as the intake duct (3) advances. With the wheels (51, 52, 54, 56) rotating in the second direction opposite to the first direction as the intake duct (3) retracts,
A cleaning body (6,60,65,66) provided near the rear of the open end (32a) of the intake duct (3) and rotating to sweep dust on the floor surface.
A rotation mechanism (7,7A) for rotating the cleaning body (6,60,65,66) based on the rotation of the wheels (51,52,54,56) is provided.
The rotation mechanism (7,7A) uses the cleaning body (6,60,65,66) as the second when the wheel (51,52,54,56) is rotating in the first direction. A handheld suction device characterized by being configured to rotate in a direction. When the wheels (51, 52, 54, 56) are rotating in the second direction, the rotation mechanism (7,7A) uses the cleaning body (6,60,65,66) as the first. The handheld suction device according to claim 1, wherein the hand-held suction device is configured to rotate in a direction. A notch (35) recessed inward is formed at the rear end (32a2) of the open end (32a) of the intake duct (3).
The handheld suction device according to claim 1 or 2, wherein at least a part of the cleaning body (6, 60, 65, 66) is arranged in the notch (35). The intake duct (3) is configured so that the distance between the front end portion (32a1) of the opening end (32a) and the floor surface can be changed by rotating around the first axis (53,55).
The wheels (51, 52, 54, 56) and the cleaning body (6, 65, 66) are both characterized in that they are configured to rotate about the first axis (53, 55). The handheld suction device according to any one of claims 1 to 3. The intake duct (3) is configured so that the distance between the front end portion (32a1) of the opening end (32a) and the floor surface can be changed by rotating around the first axis (53).
The wheels (51, 52) are configured to rotate about the first axis (53).
Claims 1 to 3 are characterized in that the cleaning body (60) is configured to rotate about a second axis (64) separated from the first axis (53) in the predetermined direction. The handheld suction device according to any one of the above. The cleaning body includes a first cleaning body (65) arranged on one side of a single wheel (54,56) and a second cleaning body arranged on the other side of the wheel (54,56). The handheld suction device according to claim 4 or 5, characterized in that it has a body (66). The wheel (56) has an elastic portion (59) that expands and contracts in response to an external force.
The handheld suction device according to any one of claims 4 to 6, wherein the elastic portion (59) can be expanded and contracted in the radial direction of the wheel (56). The intake duct (3) has a duct main body (31) and an extension duct (32) that is detachably provided with respect to the duct main body (31).
The handheld suction device according to any one of claims 1 to 7, wherein the cleaning body (6, 60, 65, 66) is fixed to the extension duct.

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