JP6876984B2 - Suction tool - Google Patents

Description

The present invention relates to a suction tool attached to a suction type cleaning device.

Various suction tools that can be attached to suction-type cleaning devices have been developed (see Patent Document 1). The suction tool of Patent Document 1 has a case in which an internal space extending upward from a suction port opened downward and an air passage flowing from the internal space to the cleaning device are formed. The suction tool further has a rotary cleaner held rotatably within the internal space of the case. The rotary cleaning body extends from the side wall of the case in the width direction of the suction tool at a position facing the suction port. The rotary cleaning body gradually becomes thinner toward a substantially central position in the extending direction of the rotary cleaning body.

When the case moves forward, the rotary cleaner in the case rotates around a central axis extending in the width direction of the case while in contact with the floor surface. As a result of the rotation of the rotary cleaner, dust on the floor surface is scraped off by the rotary cleaner. At this time, long dust such as hair may wrap around the rotary cleaning body. According to Patent Document 1, since the rotary cleaning body gradually becomes thinner toward the substantially central position in the extending direction of the rotary cleaning body, long dust spirally winds around the rotary cleaning body. Since long dust is prevented from wrapping around the rotary cleaning body at one place in the extending direction of the rotary cleaning body, the dust spirally wound around the rotary cleaning body is sucked into the cleaning device by the suction force of the cleaning device. Is done.

Japanese Unexamined Patent Publication No. 2011-188951

Although the technique of Patent Document 1 makes it possible to spirally wind long dust around a rotary cleaning body, not all long dust is spirally wound around a rotary cleaning body. For example, some of the long dust may wrap around the rotary cleaner so that it intersects with other parts. In this case, the dust is not sucked into the cleaning equipment. That is, the dust remains wrapped around the rotary cleaner. In the portion where dust is wrapped, the rotary cleaning body is less likely to come into contact with the floor surface, so that the cleaning function of the rotary cleaning body deteriorates. In order to obtain the good cleaning function of the rotary cleaning body again, it is necessary to remove the dust wrapped around the rotary cleaning body without being sucked into the cleaning device. In this case, the user needs to use a cutting tool such as scissors or a cutter to cut the dust wrapped around the rotary cleaning body.

It is an object of the present invention to provide a suction tool that makes it possible to easily remove long dust wrapped around a rotary cleaning body.

The suction tool according to one aspect of the present invention is configured to be attached to a suction type cleaning device. The suction tool forms an internal space that expands upward from a suction port that opens downward so that dust is sucked in, between a pair of side walls arranged at intervals on the left and right, and the cleaning from the internal space. The interior space has a case formed on the rear wall and a base end connected to one of the pair of side walls so that the air passage to the device comes into contact with the floor surface through the suction port. It has a rotary cleaning body that extends laterally and narrows toward the tip, and a base end that is connected to the other of the pair of side walls so as to come into contact with the floor surface through the suction port. It is provided with another rotary cleaning body which is extended laterally in the internal space and is tapered toward the tip . The rotary cleaning body and the other rotary cleaning body allow the removal of dust wrapped around the rotary cleaning body and the other rotary cleaning body between the tips of the rotary cleaning body and the other rotary cleaning body. Ru supported Tei cantilevered to said casing such that a space is formed.

According to the above configuration, since the pair of rotary cleaning bodies are extended laterally so as to rotate while being in contact with the floor surface, the dust on the floor surface is a pair as the suction tool moves. It is taken-out take-over the extension range of the rotary cleaning body. At this time, long dust on the floor surface may wrap around these rotary cleaning bodies. Since these rotary cleaning bodies are tapered toward the tip, dust wrapped around these rotary cleaning bodies moves toward the tip of the rotary cleaning body. Than that have between air is formed between the previous end of the rotary cleaning body, the dust that has reached the tip of the rotary cleaning body can be removed through the space.

With respect to the above configuration, the space may be formed in the vicinity of the open end of the passage that opens toward the internal space.

According to the above configuration, since the space for removing dust is formed near the open end of the passage, the suction force from the cleaning device is the space for removing dust and the tip of the rotary cleaning body. Acts relatively strongly on. Therefore, the space for removing the dust and the dust that has reached the tip of the rotary cleaning body are easily sucked into the cleaning device.

With respect to the above configuration, the spaces may be arranged in the opening direction of the opening end.

According to the above configuration, the spaces for removing dust are arranged in the opening direction of the opening end of the passage, so that the space for removing dust and the dust reaching the tip of the rotary cleaning body are collected by the cleaning device. It becomes easy to be sucked into.

With respect to the above configuration, the pair of rotary cleaners may have a symmetrical shape with respect to the space.

According to the above configuration, since the pair of rotary cleaners have symmetrical shapes with respect to space, the cleaning capacities of these rotary cleaners are substantially equal.

Respect to the configuration described above, the central axis of the rotary cleaning body may be inclined to the proximal end or et below the rotary cleaning body.

According to the arrangement, the central axis of the rotary cleaning body, so inclined in the proximal or et below the rotary cleaning body can protrude the distal end of the rotary cleaning body through the inlet downwardly. Therefore, although the rotary cleaning body becomes thinner toward the tip, the tip portion of the rotary cleaning body can be brought into contact with the floor surface.

With respect to the above configuration, the case may include a front wall located in front of the interior space. Wherein the central axis of the rotary cleaning body may be inclined to the proximal end or al front of the rotary cleaning body. The space may be located in front of the open end of the passage that opens toward the interior space.

According to the above configuration, since the case has a front wall arranged in front of the internal space, the suction force of the cleaning device is less likely to act on the space in front of the case and is concentrated on the suction port. .. The central axis of the rotary cleaning body, since the inclined forwardly towards the rotating cleaning body, although is thinner toward the tip, it is possible to close the distal end portion of the rotary cleaning body front wall. Since the gap between the tip portion of the rotary cleaning body and the front wall is not excessively widened, a decrease in suction force around the tip portion of the rotary cleaning body is suppressed.

With respect to the above configuration, the rotary cleaning body includes a core rod portion extending laterally and a scraping portion provided on the outer peripheral surface of the core rod portion so as to scrape dust on the floor surface. It may be included. The scraping portion may be spirally extended on the outer peripheral surface of the core rod portion, or may be inclined and extended so as to sterically intersect the central axis of the core rod portion. ..

According to the above configuration, the scraping portion is spirally extended on the outer peripheral surface of the core rod portion or is inclined and extended so as to three-dimensionally intersect the central axis of the core rod portion. Therefore, a force is applied to the dust on the floor surface in the extending direction of the core rod portion. When long dust comes into contact with the scraping part, the contact position of the dust with respect to the scraping part tends to shift in the extending direction of the core rod part, so that a part of the long dust does not overlap with other parts. It becomes easy to wrap around the core rod part.

With respect to the above configuration, the amount of protrusion of the scraping portion may be uniform.

According to the above configuration, since the amount of protrusion of the scraped portion is uniform, the ease of deformation of the scraped portion in the protruding direction can be made substantially constant. In this case, the force acting between the scraping portion and the floor surface (that is, the force for scraping the dust on the floor surface) is also substantially constant.

With respect to the above configuration, the amount of protrusion of the scraping portion from the outer peripheral surface of the core rod portion may be reduced toward the tip of the rotary cleaning body.

According to the above configuration, since the tip of the rotary cleaning body is separated from the side wall of the case, it is more likely to be displaced than the base end of the rotary cleaning body. In this case, the force acting on the floor surface (that is, the force for scraping dust on the floor surface) tends to be weak near the tip of the rotary cleaning body. However, since the amount of protrusion of the scraping portion from the outer peripheral surface of the core rod portion becomes smaller toward the tip of the rotary cleaning body, the portion closer to the tip of the rotary cleaning body is deformed in the protruding direction of the scraping portion. It's hard to do. As a result, the scraping portion near the tip of the rotary cleaning body can exert a strong force (scraping force) on the dust on the floor surface. Since the base end of the rotary cleaning body is relatively difficult to displace, the scraping portion near the base end of the rotary cleaning body can also exert a strong force (scraping force) on the dust on the floor surface.

With respect to the above configuration, the scraping portion may be formed of an elastically deformable material.

According to the above configuration, when the scraped portion hits the floor surface, it elastically bends and deforms, and when it is separated from the floor surface, it is restored, so that dust on the floor surface is effectively scraped off.

The suction tool described above makes it possible to easily remove long dust wrapped around the rotary cleaner.

It is a schematic side view of the cleaning equipment to which the suction tool of 1st Embodiment is attached. It is a schematic perspective view of a suction tool. It is a schematic perspective view of a suction tool. It is a schematic front view of a suction tool. It is a schematic front view of the rotary cleaning body of a suction tool. It is the schematic of the scraping part of a suction tool. It is the schematic of the rotary cleaning body. It is a schematic front view of a rotary cleaning body. It is a graph which shows the relationship between the diameter of a core rod part and the protrusion amount of a scraping part. It is the schematic perspective view of the suction tool of 2nd Embodiment. It is a schematic perspective view of a suction tool.

<First Embodiment>
FIG. 1 is a schematic side view of the cleaning device 101 to which the suction tool 100 is attached. The cleaning device 101 will be described with reference to FIG.

FIG. 1 shows a vacuum cleaner as a cleaning device 101. The cleaning device 101 includes a main body 102 incorporating a suction fan (not shown) and a motor (not shown) for driving the suction fan, and a hose 103 extending from the main body 102. The cleaning device 101 further includes an operation unit 104 provided at an intermediate position of the hose 103. The suction tool 100 is connected to the tip of the hose 103. The operation unit 104 is electrically connected to the main body 102 and the suction tool 100 through wiring provided along the hose 103. The operation unit 104 is configured to generate a command signal for operating or stopping the drive portion of the main body unit 102 and the suction tool 100 in response to the operation of the user.

Schematic perspective views of the suction tool 100 are shown in FIGS. 2 and 3. FIG. 2 mainly shows the lower part of the suction tool 100. FIG. 3 mainly shows the upper part of the suction tool 100. A schematic front view of the suction tool 100 is shown in FIG. The suction tool 100 will be described with reference to FIGS. 1 to 4.

The suction tool 100 scrapes off the dust from the case 120 forming the suction port 111 on the floor surface F for sucking the dust, the connecting portion 130 configured to connect the case 120 to the tip of the hose 103, and the dust. It is provided with two rotary cleaning bodies 141 and 142 configured as described above. The suction tool 100 further includes rollers 151 to 154 that assist the suction tool 100 in moving in the front-rear direction. The suction port 111 is a rectangular region that is open downward so as to face the floor surface F and is long in the left-right direction.

The case 120 has a hollow box structure that is long in the left-right direction and is configured to form an internal space 112 that extends upward from the suction port 111. The internal space 112 is used as a space for allowing air and dust to flow and accommodating the rotary cleaning bodies 141 and 142.

The case 120 includes a front wall 121, a rear wall 122, side walls 123, 124, an upper wall 125 and a holding arm 126. The front wall 121, the rear wall 122, the side walls 123, 124, and the upper wall 125 are portions forming the suction port 111 and the internal space 112. The holding arm 126 is a portion that holds the rollers 153 and 154.

The front wall 121 is a portion that is erected in front of the internal space 112 and is long in the left-right direction. Three recesses 113 recessed upward are formed on the lower edge of the front wall 121. These recesses 113 are formed at positions that substantially equalize the lower edge of the front wall 121 in the longitudinal direction.

Each of the side walls 123 and 124 has a hollow structure. Drive mechanisms (for example, a motor and a drive belt) for driving the rotary cleaning bodies 141 and 142 are arranged in the side walls 123 and 124. The drive mechanism is electrically connected to the operation unit 104 so as to operate or stop under the operation of the operation unit 104. The drive mechanism has a rotary shaft that protrudes from the inner surfaces of the side walls 123 and 124 (that is, the surface that faces the internal space 112) and is connected to the rotary cleaners 141 and 142.

A recess 114 is formed at the rear end of the lower surface of each of the side walls 123 and 124. A roller 151 is arranged in the recess 114 of the side wall 123. A roller 152 is arranged in the recess 114 of the side wall 124. The side walls 123 and 124 rotatably hold the rollers 151 and 152 so that a part of the rollers 151 and 152 protrudes downward from the lower surface of the side walls 123 and 124.

The rear wall 122 is a portion that is erected behind the internal space 112 and is long in the left-right direction. The lower surface of the rear wall 122 is substantially flush with the lower surfaces of the side walls 123 and 124. The inner surface of the rear wall 122 (that is, the surface facing the internal space 112) has a V-shape protruding forward in bottom view. The distance between the inner surface of the rear wall 122 and the inner surface of the front wall 121 (that is, the surface facing the internal space 112) is the shortest at the substantially central position of the internal space 112 in the left-right direction. The distance between the inner surfaces of the rear wall 122 and the front wall 121 gradually increases as it approaches the side walls 123 and 124.

A passage 116 extending in the front-rear direction is formed in the rear wall 122. The substantially rectangular opening end 115 of the passage 116 appears on the inner surface of the rear wall 122 and opens forward. The opening end 115 is formed substantially in the center of the inner surface of the rear wall 122 in the left-right direction. In the rear wall 122, a passage 116 extending rearward from the opening end 115 and connecting to the connecting portion 130 is formed. The passage 116 is used as a flow path for air and dust to flow from the internal space 112 to the cleaning device 101.

Inside the rear wall 122, two internal spaces separated from the passage 116 are formed on the right side and the left side of the passage 116. These internal spaces are used to arrange a drive mechanism for driving the rotary cleaners 141 and 142.

The upper wall 125 is arranged above the internal space 112 and forms the upper surface of the case 120. The upper surface of the case 120 is curved upward.

The connecting portion 130 is vertically projected by the holding portion 131 protruding rearward from the rear surface of the rear wall 122 (the surface opposite to the inner surface of the rear wall 122) at a substantially central position of the suction tool 100 in the left-right direction, and up and down by the holding portion 131. Includes a rotatably held connecting tube 132. The holding portion 131 has a tubular structure with a notched upper portion. The front end of the connecting cylinder 132 is inserted into the holding portion 131 and is rotatably held up and down by the holding portion 131. The rear end of the connecting cylinder 132 is configured to be connectable to the tip of the hose 103. The internal space of the connecting cylinder 132 communicates with the passage 116 formed by the rear wall 122.

The holding arm 126 is a substantially U-shaped portion extending from the rear surface of the rear wall 122 so as to surround the lower portion of the holding portion 131. The lower surface of the holding arm 126 is substantially flush with the lower surfaces of the side walls 123, 124 and the rear wall 122. At the rear end portion of the lower surface of the holding arm 126, a recess 117 recessed upward is formed so as to accommodate the rollers 153 and 154. The rollers 153 and 154 are housed in the recess 117 so that a part of the rollers 153 and 154 protrudes downward from the lower surface of the holding arm 126, and the rollers 153 and 154 are rotatably formed by the holding arm 126.

The rotary cleaning body 141 is provided on the core rod portion 161 extending laterally (to the right) from the inner surface of the side wall 123 and on the outer peripheral surface of the core rod portion 161 so as to scrape off dust on the floor surface F. It has a plurality of scraping portions 162. The core rod portion 161 is slightly shorter than half the length of the internal space 112 in the left-right direction. The base end of the core rod portion 161 is located near the inner surface of the side wall 123 (on the right side of the side wall 123) and is connected to the rotating shaft of the drive mechanism built in the side wall 123. Therefore, the base end of the rotary cleaning body 141 is supported by the rotary shaft and the side wall 123 of the drive mechanism.

The core rod portion 161 has an elongated truncated cone shape that narrows from the base end to the tip end. The central axis (that is, the rotation axis) of the core rod portion 161 is centered so that the generatrix of the core rod portion 161 (truncated cone) defined at the position closest to the front wall 121 is substantially parallel to the inner surface of the front wall 121. It is inclined forward from the base end of the rod portion 161. As described above, since the inner surface of the rear wall 122 is bent so as to form a V shape in the bottom view, the generatrix of the core rod portion 161 defined at the position closest to the rear wall 122 is the rear wall 122. It is also substantially parallel to the inner surface. In addition, the central axis of the core rod portion 161 is the base end of the core rod portion 161 so that the generatrix of the core rod portion 161 defined at the lowermost side is substantially parallel to the lower surfaces of the side walls 123 and 124 and the rear wall 122. It slopes downward from.

Each of the plurality of scraping portions 162 is a strip-shaped portion extending over a section from the base end to the tip end of the core rod portion 161. The scraping portion 162 is formed of an elastically deformable material. For example, the scraping portion 162 may be formed by using a large number of brush bristles, may be formed by using a band-shaped elastomer or a band-shaped elastic resin, or may be formed by using a band-shaped cloth material. It may have been done.

The scraping portion 162 projects from the outer peripheral surface of the core rod portion 161 with a substantially uniform amount of protrusion over the section from the base end to the tip end of the core rod portion 161. The amount of protrusion of the scraping portion 162 is set to a value at which the scraping portion 162 projects downward through the suction port 111 and comes into contact with the floor surface F.

The scraping portion 162 is non-parallel to the central axis of the core rod portion 161. Specifically, the scraping portion 162 extends so as to three-dimensionally intersect the central axis of the core rod portion 161. That is, the positions of the base end and the tip of the scraping portion 162 in the circumferential direction of the core rod portion 161 are different from each other.

The rotary cleaning body 142 is symmetrical with the rotary cleaning body 141. That is, the tip of the rotary cleaning body 142 faces the tip of the rotary cleaning body 141. The rotary cleaning body 142 extends laterally from the tip of the rotary cleaning body 142 toward the side wall 124. The base end of the core rod portion 161 of the rotary cleaning body 142 is located in the vicinity of the side wall 124 and is connected to the rotary shaft of the drive mechanism built in the side wall 124. Therefore, the base end of the rotary cleaning body 142 is supported by the rotary shaft and the side wall 124 of the drive mechanism.

Since the rotary cleaning bodies 141 and 142 are slightly shorter than half the length of the internal space 112 in the left-right direction, a space 118 is formed between the tips of the rotary cleaning bodies 141 and 142. That is, the space 118 is formed adjacent to the tips of the rotary cleaning bodies 141 and 142 in the extending direction of the rotary cleaning bodies 141 and 142. The rotary cleaning bodies 141 and 142 have a symmetrical shape with respect to the space 118. The space 118 is used to remove long dust (eg, hair) wrapped around the rotary cleaners 141 and 142.

The space 118 is located in the vicinity of the opening end 115 of the passage 116 (in front of the opening end 115). Specifically, the space 118 is aligned with the opening end 115 in the opening direction of the opening end 115. The space 118 is formed at a substantially center of the internal space 112 in the left-right direction.

The user operates the operation unit 104 to activate the drive mechanism in the main body 102 and the suction tool 100, and moves the suction tool 100 back and forth. As a result of the operation of the main body 102, the air in the internal space 112 is sucked into the main body 102 through the passage 116, the connection 130 and the hose 103. The dust on the floor surface F is sucked into the main body 102 together with the air. As a result of the drive mechanism in the suction tool 100, the rotary cleaning bodies 141 and 142 rotate. As a result, the scraping unit 162 rubs the floor surface F and scrapes the dust on the floor surface F. Therefore, the dust is effectively removed from the floor surface F.

As a result of the rotation of the rotary cleaning bodies 141 and 142, long dust may be wrapped around the rotary cleaning bodies 141 and 142. When a part of the long dust overlaps with the other part, the long dust tends to be kept wrapped around the rotary cleaners 141 and 142. In this case, it is difficult to remove long dust from the rotary cleaning bodies 141 and 142 only by the suction force from the cleaning device 101.

When the long dust is wrapped around the rotary cleaners 141 and 142 so that a part of the long dust overlaps with the other parts, the dust is as shown in FIG. 5 (schematic front view of the rotary cleaners 141 and 142). The cross sections of are arranged so as to be substantially orthogonal to the central axis of the rotary cleaning bodies 141 and 142. In this case, the dust wrapping force on the rotary cleaning bodies 141 and 142 acts in a direction substantially perpendicular to the central axis of the rotary cleaning bodies 141 and 142.

As described above, while the core rod portion 161 has a truncated cone shape, the amount of protrusion of the scraping portion 162 is substantially uniform. Therefore, the overall external shape of the rotary cleaning bodies 141 and 142 is shown in FIG. As shown in, it has a substantially truncated cone shape that narrows from the base end to the tip end. In this case, one of the components of the winding force acts in the direction toward the tips of the rotary cleaning bodies 141 and 142. Therefore, the dust wrapped around the rotary cleaning bodies 141 and 142 moves toward the tips of the rotary cleaning bodies 141 and 142 by the component force.

A space 118 is formed between the tips of the rotary cleaning bodies 141 and 142. Therefore, the dust that has moved toward the tips of the rotary cleaning bodies 141 and 142 and has reached the space 118 is removed from the rotary cleaning bodies 141 and 142 through the space 118.

Since the space 118 is located near the opening end 115 of the passage 116, the suction force of the cleaning device 101 acts relatively strongly on the space 118 (and the tips of the rotary cleaning bodies 141 and 142). Since the space 118 is aligned with the opening end 115 in the opening direction of the opening end 115, the long dust removed through the space 118 is directly sucked into the passage 116.

The suction tool 100 scrapes dust on the floor surface F by using rotary cleaning bodies 141 and 142 arranged in the left-right direction. Therefore, even if the length of the rotary cleaning bodies 141 and 142 is less than half the length of the internal space 112 in the left-right direction, dust on the floor surface F can be scraped over a wide area.

Since the length of the rotary cleaners 141 and 142 is less than half the length of the internal space 112 in the left-right direction, the suction tool 100 has a single rotary cleaner over the length of the internal space 112 in the left-right direction. It has a robust structure compared to the provided structure. That is, when the force pushing up the tips of the rotary cleaning bodies 141 and 142 acts on the rotary cleaning bodies 141 and 142, the load applied to the base ends of the rotary cleaning bodies 141 and 142 (that is, the connection portion with the drive mechanism) is relatively large. It becomes smaller.

The rotary cleaning bodies 141 and 142 have a symmetrical structure. Therefore, substantially equal cleaning ability is obtained between the left portion and the right portion of the suction tool 100.

The central axis of the rotary cleaning bodies 141 and 142 is inclined downward from the base end of the rotary cleaning bodies 141 and 142, and the bus lines of the rotary cleaning bodies 141 and 142 defined at the lowermost side are the rear wall 122 and the side wall 123, It is substantially parallel to the lower surface of 124. Therefore, the rotary cleaning bodies 141 and 142 can come into contact with the floor surface F with substantially uniform force over the section from the base end to the tip end of the rotary cleaning bodies 141 and 142.

The central axis of the rotary cleaning bodies 141 and 142 is inclined forward from the base end of the rotary cleaning bodies 141 and 142, and the bus line of the rotary cleaning bodies 141 and 142 defined at the position closest to the front wall 121 is the front wall 121. It is almost parallel to the inner surface of. Since the gap between the rotary cleaner 141, 142 and the inner surface of the front wall 121 has a substantially uniform size over the section from the base end to the tip of the rotary cleaner 141, 142, the gap is formed. There is almost no change in suction force due to a change in size.

The inner surface of the rear wall 122 is bent in a V shape according to the inclination of the rotary cleaning bodies 141 and 142. Therefore, the gap between the rotary cleaning bodies 141 and 142 and the inner surface of the rear wall 122 also has a substantially uniform size over the section from the base end to the tip end of the rotary cleaning bodies 141 and 142. Therefore, the change in the suction force due to the change in the size of the void does not occur substantially.

When the scraping portion 162 does not three-dimensionally intersect the central axes of the rotary cleaning bodies 141 and 142, the dust wrapping state described with reference to FIG. 5 is likely to occur. For example, when the core rod portion 161 not provided with the scraping portion 162 rotates while riding on the dust extending in the direction orthogonal to the central axis of the core rod portion 161, the dust is collected in the longitudinal direction of the core rod portion 161. Wraps around the core rod portion 161 at one place. When the scraping portion 162 is provided so as to three-dimensionally intersect the central axes of the rotary cleaning bodies 141 and 142 (see FIG. 6 (schematic view of the scraping portion 162)), the scraping portion 162 becomes dust. A force is applied diagonally to the dust at the contact portion with. As a result, the contact portion between the scraping portion 162 and the dust tends to gradually change in the longitudinal direction of the rotary cleaning bodies 141 and 142. As a result of the movement of the contact portion, the dust does not wrap at one place in the longitudinal direction of the rotary cleaning bodies 141 and 142, and tends to wrap spirally around the outer peripheral surfaces of the rotary cleaning bodies 141 and 142. In this case, even if the dust is wrapped around the rotary cleaning bodies 141 and 142, the dust can be removed from the rotary cleaning bodies 141 and 142 by the suction force of the cleaning device 101.

With respect to the above-described embodiment, each of the rotary cleaners 141 and 142 has a plurality of scraping portions 162. However, each of the rotary cleaners 141 and 142 may have one scraping portion 162. In this case, the scraping portion 162 is preferably formed so as to spirally wind around the outer peripheral surface of the core rod portion 161 (see FIG. 7 (schematic view of the rotary cleaning bodies 141 and 142)). Also in this case, since the scraping portion 162 extends non-parallel to the central axis of the core rod portion 161, the contact position with long dust is gradually moved in the longitudinal direction of the core rod portion 161. The effect is obtained.

With respect to the above-described embodiment, a space 118 is formed between the rotary cleaning bodies 141 and 142. That is, the rotary cleaning bodies 141 and 142 are not connected. However, the suction tool 100 further includes a connecting member 143 that connects the tips of the rotary cleaning bodies 141 and 142 to each other, as shown in FIG. 8 (schematic front view of the rotary cleaning bodies 141 and 142). You may. The connecting member 143 is configured to be removable from the tips of the rotary cleaning bodies 141 and 142. For example, the connecting member 143 may be a universal joint.

Dust collected on the connecting member 143 when the suction tool 100 is used is removed together with the connecting member 143 when the connecting member 143 is removed from the tips of the rotary cleaning bodies 141 and 142. When the connecting member 143 is removed from the tips of the rotary cleaning bodies 141 and 142, a space 118 adjacent to the tips of the rotary cleaning bodies 141 and 142 is formed. Dust near the tips of the rotary cleaners 141 and 142 can be removed through the space 118.

Since the tips of the rotary cleaning bodies 141 and 142 are connected to each other by the connecting member 143, the rotary cleaning bodies 141 and 142 are supported by the case 120. The connecting structure of the rotary cleaning bodies 141 and 142 shown in FIG. 8 is more robust than the structure in which each of the rotary cleaning bodies 141 and 142 is cantilevered and supported by the case 120 (see FIG. 2).

With respect to the above-described embodiment, the core rod portion 161 has a tapered shape that tapers from the base end to the tip end. However, as shown in the graph of FIG. 9 (a graph showing the relationship between the diameter of the core rod portion 161 and the protrusion amount of the scraping portion 162), the diameter of the core rod portion 161 is based on the core rod portion 161. It may be substantially constant over the section from the end to the tip. In this case, the scraping portion 162 is formed so that the amount of protrusion of the scraping portion 162 decreases from the base end to the tip end of the core rod portion 161.

Since the tip of the core rod portion 161 is separated from the side walls 123 and 124, it is likely to be displaced upward as compared with the base end of the core rod portion 161. Since the amount of protrusion of the scraping portion 162 at the tip of the core rod portion 161 is relatively small, the scraping portion 162 at the tip of the core rod portion 161 is relatively difficult to be elastically deformed. The upward displacement of the tip of the core rod portion 161 acts to weaken the contact of the scraping portion 162 with the floor surface F, but the difficulty of deformation of the scraping portion 162 at the tip of the core rod portion 161 is the floor. The contact of the scraping portion 162 with the surface F is strengthened. Therefore, these effects are offset. Since the amount of protrusion of the scraping portion 162 at the base end of the core rod portion 161 is relatively large, the scraping portion 162 at the base end of the core rod portion 161 is relatively easily elastically deformed. The base end of the core rod portion 161 is relatively difficult to be displaced upward. The ease of elastic deformation of the scraping portion 162 weakens the contact of the scraping portion 162 with respect to the floor surface F, but the difficulty of upward displacement of the core rod portion 161 is the difficulty of the scraping portion 162 with respect to the floor surface F. These effects are offset as they act to strengthen the contact of the.

<Second Embodiment>
The suction tool 100 of the first embodiment has two rotary cleaning bodies 141 and 142. However, the suction tool 100 may have one rotary cleaning body 141 (see FIG. 10 (schematic perspective view of the suction tool 100)). The suction tool 100 of the second embodiment having one rotary cleaning body 141 will be described with reference to FIGS. 1 and 10.

The base end of the rotary cleaning body 141 is located near the inner surface of the side wall 123. The rotary cleaning body 141 extends laterally (to the right), and the tip of the rotary cleaning body 141 is located near the side wall 124. That is, the tip of the rotary cleaning body 141 faces the inner surface of the side wall 124. A space 118 is formed between the tip of the rotary cleaning body 141 and the side wall 124. In the space 118, a connecting member 143 that connects the tip of the rotary cleaning body 141 and the side wall 124 is arranged.

The central axis of the rotary cleaning body 141 is inclined downward from the base end so that the generatrix of the core rod portion 161 defined at the lowermost side is substantially parallel to the floor surface F. The central axis of the rotary cleaning body 141 is inclined forward from the base end so that the generatrix of the core rod portion 161 defined at the position closest to the front wall 121 is substantially parallel to the inner surface of the front wall 121.

The front wall 121 and the side wall 123 are substantially the same as the front wall 121 and the side wall 123 of the first embodiment. However, the side wall 124 and the rear wall 122 are different from the side wall 124 and the rear wall 122 of the first embodiment.

The side wall 124 is formed thinner than the side wall 124 of the first embodiment because it is not necessary to house the drive mechanism for driving the rotary cleaning body 142. The side wall 124 comprises a main wall 127 in which a through hole is formed at a position facing the tip of the rotary cleaning body 141, and a plug piece 128 that closes the through hole of the main wall 127 and is connected to one end of the connecting member 143. Includes. The plug piece 128 is removable from the main wall 127 and the connecting member 143.

A recess 119 in which the roller 151 is housed is formed on the lower surface of the rear wall 122. The recess 119 is formed substantially in the center of the lower surface of the rear wall 122 in the left-right direction. While the roller 151 is provided in the recess 119, the suction tool 100 of the second embodiment does not have the rollers 152-154 described in connection with the first embodiment. Therefore, the suction tool 100 of the second embodiment also does not have a mounting portion (that is, a recess 114 and a holding arm 126) for mounting these rollers 152 to 154. The internal space of the rear wall 122 on the left side of the recess 119 is used to accommodate the drive mechanism that drives the rotary cleaner 141.

The rear wall 122 is also different from the rear wall 122 of the first embodiment in the formation position of the passage 116. That is, the rear wall 122 of the second embodiment is formed not substantially in the center of the rear wall 122 in the left-right direction, but closer to the side wall 124 than the central position. Therefore, the open end 115 of the passage 116 appears in the vicinity of the space 118 between the rotary cleaner 141 and the side wall 124.

The inner surface of the rear wall 122 is inclined forward from the side wall 123 toward the side wall 124 so that the gap between the rotary cleaning body 141 and the inner surface of the rear wall 122 is substantially constant in the left-right direction.

The connecting portion 130 is provided on the rear surface of the rear wall 122 according to the formation position of the passage 116. That is, the connecting portion 130 extends rearward from the rear surface of the rear wall 122 closer to the side wall 124 than the central position of the rear surface of the rear wall 122 in the left-right direction.

Like the suction tool 100 of the first embodiment, the suction tool 100 of the second embodiment has a rotary cleaning body 141 that narrows from the base end to the tip end, so that the suction tool 100 is long wrapped around the rotary cleaning body 141. Dust can be urged to space 118. Although dust may collect in the connecting member 143 provided in the space 118, the dust can be removed from the suction tool 100 by sequentially removing the plug piece 128 and the connecting member 143.

The base end of the rotary cleaning body 141 is supported by the rotary shaft and the side wall 123 of the drive mechanism. The tip of the rotary cleaning body 141 is supported by the side wall 124 via the connecting member 143. That is, the rotary cleaning body 141 is supported by both side walls 123 and 124. Therefore, the suction tool 100 has a more robust structure than the suction tool 100 having the rotary cleaning body 141 supported by a cantilever.

Unlike the suction tool 100 of the first embodiment, the suction tool 100 of the second embodiment does not have the rotary cleaning body 142. Therefore, the suction tool 100 of the second embodiment does not require a drive mechanism for driving the rotary cleaning body 142. As a result, the suction tool 100 of the second embodiment is created using fewer parts than the suction tool 100 of the first embodiment.

If the rotary cleaner 141 and the drive mechanism have a robust structure, the rotary cleaner 141 may be cantilevered (see FIG. 11 (schematic perspective view of suction tool 100)). In this case, the suction tool 100 does not have to have the connecting member 143. In addition, the side wall 124 does not have to have a through hole, nor does it require a plug piece 128 that closes the through hole. Therefore, the suction tool 100 has a simple structure.

Regarding the above-described embodiment, as the cleaning device 101, an electric vacuum cleaner in which the user himself / herself moves the suction tool 100 is exemplified. However, the suction tool 100 may be connected to an automatically moving robot vacuum cleaner.

The principle of this embodiment is suitably used for an apparatus used for cleaning work.

100 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Suction tool 101 ・ ・ ・ ・ ・ ・ ・ ・ Cleaning equipment 111 ・ ・ ・ ・ ・ ・ ・ ・ Suction port 112 ・ ・ ・ ・ ・ ・ ・ ・Internal space 115 ・ ・ ・ ・ ・ ・ ・ ・ Open end 116 ・ ・ ・ ・ ・ ・ ・ ・ Passage 118 ・ ・ ・ ・ ・ ・ ・ ・ Space 120 ・ ・ ・ ・ ・ ・ ・ ・Case 121 ··········································································・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Core rod part 162 ・ ・ ・ ・ ・ ・ ・ ・ Scraping part F ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・

Claims (10)

A suction tool that can be attached to suction-type cleaning equipment.
An internal space that expands upward from a suction port that opens downward so that dust is sucked in is formed between a pair of side walls that are arranged at intervals on the left and right, and air that flows from the internal space to the cleaning device. In the case where the passage is formed on the back wall,
It has a base end connected to one of the pair of side walls, is extended laterally in the internal space so as to come into contact with the floor surface through the suction port, and is tapered toward the tip. Rotating cleaning body and
It has a base end connected to the other of the pair of side walls, extends laterally in the internal space so as to contact the floor surface through the suction port, and narrows toward the tip. With other rotary cleaners ,
The rotary cleaning body and the other rotary cleaning body allow the removal of dust wrapped around the rotary cleaning body and the other rotary cleaning body between the tips of the rotary cleaning body and the other rotary cleaning body. Tei Ru, suction unit is cantilevered on the casing such that a space is formed. The suction tool according to claim 1, wherein the space is formed in the vicinity of an opening end of the passage that opens toward the internal space. The suction tool according to claim 2, wherein the spaces are arranged in the opening direction of the opening end. The suction tool according to any one of claims 1 to 3, wherein the rotary cleaning body and the other rotary cleaning body have a symmetrical shape with respect to the space. The suction tool according to any one of claims 1 to 4, wherein the central axis of the rotary cleaning body is inclined downward from the base end of the rotary cleaning body. The case includes an anterior wall located in front of the interior space.
The central axis of the rotary cleaning body is inclined forward from the base end of the rotary cleaning body.
The suction tool according to any one of claims 1 to 4, wherein the space is located in front of an opening end of the passage opened toward the internal space. The rotary cleaning body includes a core rod portion extending laterally and a scraping portion provided on the outer peripheral surface of the core rod portion so as to scrape dust on the floor surface.
The scraping portion is spirally extended on the outer peripheral surface of the core rod portion, or is inclined and extended so as to sterically intersect the central axis of the core rod portion. The suction tool according to any one of 1 to 6. The suction tool according to claim 7 , wherein the amount of protrusion of the scraping portion is uniform. The suction tool according to claim 7 , wherein the amount of protrusion of the scraping portion from the outer peripheral surface of the core rod portion is reduced toward the tip of the rotary cleaning body. The suction tool according to any one of claims 7 to 9 , wherein the scraping portion is made of an elastically deformable material.

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