TW202203833A - Suction tool attachable to suction-type cleaning apparatus - Google Patents

Abstract

This suction tool is attachable to a cleaning apparatus for suctioning dust, and is provided with: a housing in which a flow passage extending rearward from an opening that opens in the center in the width direction of the suction space, the housing being formed so as to partition off a suction space that opens in a bottom surface; scraper rollers which are elongated in the width direction and are disposed in the suction space; and a shield part disposed in the suction space. The scraper rollers are each shaped so as to be tapered toward the opening of the flow passage. The shield part protrudes, to the side of the scraper rollers, from portions of the inner wall that is of the housing partitioning off the suction space, and that is adjacent to the tapered portions of the scraper parts.

Description

Suction device installed in suction type vacuum cleaner

The present invention relates to a suction device installed in a suction-type vacuum cleaner.

Various suction tools to be attached to suction-type vacuum cleaners have been developed (refer to Japanese Patent Laid-Open No. 2000-166826). The inhaler of Japanese Patent Laid-Open No. 2000-166826 has a casing, and the casing is formed with a suction space opened on the lower surface. A scraping roller for scraping off dust on the floor is accommodated in the suction space. The scraping roller is extended in the width direction in the suction space, and is exposed downward from the casing through the suction space. The scraping roller has a thickness approximately equal to the width before and after the suction space. Therefore, most of the suction space is blocked by the scraping roller, and the substantial opening area of the suction space (that is, the size of the remaining area that is not blocked by the scraping roller) is narrowed.

For the purpose of removing the dust wound around the scraping roll, the scraping roll may be configured such that the diameter of the scraping roll varies in the width direction. Japanese Patent Laid-Open No. 2011-188951 discloses a suction tool having a scraping roller tapered toward a center position in the width direction of the suction tool. In the suction tool of Japanese Patent Laid-Open No. 2011-188951, since the scraping roller is tapered toward the center position in the width direction of the suction tool, not only the scraping is generated due to the rotation of the scraping roller, therefore, the dust is not only affected by the rotation of the scraping roller. The winding force of the take-up roll also generates a force in the direction of the front end of the scraper roll. Therefore, the dust wound around the scraping roller easily moves toward the center position of the scraping roller, and is sucked into the cleaner through the flow path opened in the suction space after the center position of the scraping roller.

When the scraping roll has a tapered shape, the remaining area in the suction space that is not blocked by the scraping roll (ie, the substantial opening area of the suction space) widens. As a result, the attractive force acting on the remaining area is reduced.

Therefore, this invention is made|formed based on the said subject, and the objective is to provide the inhalation tool which has the structure which can suppress the fall of attractive force.

In one aspect of the present invention, an inhaler is an inhaler attached to a vacuum cleaner that sucks dust, and includes a housing formed to define a suction space open to a lower surface, and a flow path formed from the inhalation A flow passage extending rearwardly with an opening in the center opening in the width direction in the space; a scraping roller arranged in the suction space and being long in the width direction; and a shielding portion arranged in the suction space. The said scraping roller has the shape which becomes thin as it approaches the said opening of the said flow path. The shielding portion protrudes toward the scraping roller from a portion of the inner wall of the casing that defines the suction space, and the shielding portion is a portion adjacent to a portion of the scraping roller having a narrow diameter.

According to the present invention, the decrease in attractive force can be suppressed.

The objects, features and advantages of the present invention will become more apparent from the following detailed description and accompanying drawings.

Form for carrying out the invention Hereinafter, the inhaler according to the embodiment of the present invention will be described with reference to the drawings. However, each figure referred to below is a figure which simplified and shown the main component which is necessary for demonstrating the inhalation tool which concerns on embodiment of this invention for convenience of description. Therefore, the inhaler of the embodiment of the present invention may include arbitrary components not shown in the drawings referred to in this specification.

FIG. 1 shows a suction-type vacuum cleaner 101 with a suction device 100 mounted thereon. The vacuum cleaner 101 includes a main body 102 having a built-in suction fan (not shown) or a motor (not shown) that drives the suction fan, and a hose 103 extending from the main body 102 . The vacuum cleaner 101 is further provided with the operation part 104 provided in the intermediate position of the hose 103. The suction tool 100 is connected to the front end of the hose 103 . The operation part 104 is electrically connected to the main body part 102 and the inhaler 100 by wiring provided along the hose 103 . The operation part 104 is comprised so that it may receive the operation of a user, and generate|occur|produce the command signal for actuating or stopping the main body part 102 and the drive part of the inhaler 100.

As shown in FIGS. 1 to 3 , the inhaler 100 includes: a casing 120 formed of a long hollow box structure in the width direction (hereinafter, referred to as the left-right direction); and two first and second scrapers The rollers 141 and 142 are configured to scrape off dust.

The casing 120 includes: a casing body 120a; and a front cover 129, which are separate from the casing body 120a. The case body 120a is formed in a hollow shape, and has a rear side portion 120aa long in the left-right direction, and a pair of side portions 120ab located in front of the left and right ends of the rear side portion 120aa. The housing body 120a includes: a pair of front walls 121, which constitute the front surface of the pair of side parts 120ab; a rear wall 122, which constitutes the rear surface of the rear side part 120aa; A pair of side portions 120ab are laterally outer sides in the left-right direction; an upper wall 125 constitutes an upper surface of the rear side portion 120aa and an upper surface of the pair of side portions 120ab; and a lower wall 126 constitutes the rear side portion 120aa and a pair of sides the lower surface of the portion 120ab.

The pair of front walls 121 are arranged at intervals in the left-right direction. The rear wall 122 is formed to have a recessed portion 122a (refer to FIG. 2 ) that is recessed toward the front at the center position in the left-right direction. The side walls 123 and 124 connect a pair of the front wall 121 and the rear wall 122 . The upper wall 125 is connected to the upper part of the rear wall 122 , the upper parts of the side walls 123 and 124 , and the upper parts of the pair of front walls 121 and 121 .

As shown in FIG. 3 , the lower wall 126 extends inwardly from the lower ends of the rear wall 122 and the side walls 123 and 124 , and is generally formed into a substantially U-shaped bottom view. A first dust collecting part 128 is provided on the lower surface of the lower wall 126 to extend in the left-right direction, and the first dust collecting part 128 is formed by a raised cloth having cilia raised on the cloth surface. In addition, the shape and material of the 1st dust collecting part 128 are not limited. The first dust collecting portion 128 may be omitted.

The casing body 120a further includes a partition wall 127 . The partition wall 127 includes side partition wall portions 127a and 127a constituting the inner surface in the left-right direction of the pair of side portions 120ab, and a rear partition wall portion 127b constituting the front surface of the rear side portion 120aa (see FIGS. 2 and 3 ).

The side partition wall parts 127a and 127a extend in the front-rear direction and are connected to the left and right ends of the pair of front walls 121 and 121 and the rear partition wall part 127b. The side partition wall parts 127a and 127a connect the part of the pair of side parts 120ab and 120ab in the lower wall 126 and the part of the pair of side parts 120ab and 120ab in the upper wall 125 . The heights of the side partition wall portions 127 a and 127 a are set to be the same height as the side walls 123 and 124 .

The rear partition wall portion 127b extends in the left-right direction and is connected to the side partition walls 127a and 127a. The rear partition wall portion 127b connects portions of the rear side portions 120aa, 120aa in the lower wall 126 and portions of the rear side portions 120aa, 120aa in the upper wall 125.

The front cover 129 is arranged so as to be spanned over the pair of side portions 120ab in a state where the rear end portion is placed on the rear side portion 120aa. The front cover 129 extends from a position placed on the rear side portion 120aa to between the pair of front walls 121 in the left-right direction. The front cover 129 is configured to be detachable from the case body 120a. In addition, the front cover 129 may not be detachable from the housing body 120a.

The partition wall 127 and the front cover 129 define a suction space 111 for sucking in dust. The suction space 111 is covered from above by the front cover 129 . The suction space 111 is opened downward, and the opening is formed in a substantially rectangular shape. The suction space 111 allows air and dust to flow from the opening on the lower surface, and accommodates the first and second scraping rollers 141 and 142 and the like. The partition wall 127 and the front cover 129 are examples of the inner wall of the casing 120 that defines the suction space 111 .

A housing space 112 is formed in the housing body 120a, and a motor (not shown) for driving the first and second scraping rollers 141 and 142, and the like are housed.

The case body 120a is formed with a flow path 116, a rear partition wall portion 127b penetrating the partition wall 127, and a recessed portion 122a of the rear wall 122 (see FIG. 2). The opening 115 on the front side of the flow path 116 is formed at the center position in the left-right direction of the rear partition wall portion 127 b of the partition wall 127 , and the flow path 116 communicates with the suction space 111 . The flow path 116 extends rearward from the concave portion 122 a of the rear wall 122 and communicates with the connection port 130 . The flow path 116 functions as a flow path through which air and dust flow from the suction space 111 to the connection port 130 . The connection port 130 is connected to the front end of the hose 103 of the vacuum cleaner 101 .

The 1st scraping roller 141 is arrange|positioned in the suction space 111 (refer FIG. 3). The first scraping roller 141 has: a tapered cylindrical portion 161, a side partition wall portion 127a penetrating the partition wall 127 from the accommodating space 112 near the side wall 123; a shaft portion 163 fitted into the tapered cylindrical portion 161; and a plurality of scrapers The taking part 162 is provided on the outer peripheral surface of the tapered cylindrical part 161 (refer to FIGS. 3 and 4 ).

The tapered cylindrical portion 161 is a long cylindrical member in the left-right direction, and is slightly shorter than half of the length between the left and right side walls 123 and 124 . As shown in FIG. 4 , the tapered cylindrical portion 161 has an elongated truncated cone shape that tapers from the base end toward the front end so as to taper toward the opening 115 of the flow path 116 in the suction space 111 . The tapered cylindrical portion 161 is inclined so that the front end is located more forward than the base end (see FIG. 3 ). In addition, the tapered cylindrical portion 161 is inclined so that the front end is positioned below the base end (see FIG. 4 ). The tapered cylindrical portion 161 is supported by the casing 120 in this posture.

The shaft portion 163 is fitted into the tapered cylindrical portion 161 so as to be rotatable integrally with the tapered cylindrical portion 161 . The shaft portion 163 is rotatably supported in the accommodating space 112 by a bearing (not shown) disposed between the side wall 123 and the side partition wall portion 127a. The pulley 131 is attached to the shaft portion 163 . A belt 166 is stretched over the pulley 131 , and the belt 166 is stretched over the motor shaft of the motor arranged in the accommodating space 112 . Thereby, the 1st scraping roller 141 is rotated by the drive of a motor.

The plurality of scraping parts 162 are used for scraping the dust on the floor. Each of the plurality of scraping parts 162 is a strip-shaped part extending helically so as to cover a section from the base end to the front end of the tapered cylindrical part 161 . The scraping portion 162 is formed of an elastically deformable material. For example, the scraping portion 162 may be formed using a plurality of bristles, a belt-shaped elastic body or a belt-shaped elastic resin, or a belt-shaped cloth material.

The scraping portion 162 protrudes from the outer peripheral surface of the tapered cylindrical portion 161 by substantially the same amount over a range from the base end to the distal end of the tapered cylindrical portion 161 . The protruding amount of the scraping portion 162 is set such that the scraping portion 162 passes through the suction space 111, protrudes further downward than the lower surface of the casing 120, and contacts the floor surface.

The scraping portion 162 is non-parallel with respect to the central axis of the tapered cylindrical portion 161 . Specifically, the scraping portion 162 is extended in a direction twisted with respect to the central axis of the tapered cylindrical portion 161 . That is, the positions of the base end and the front end of the scraping portion 162 in the circumferential direction of the tapered cylindrical portion 161 are different from each other.

The second scraping roll 142 and the first scraping roll 141 are bilaterally symmetrical. That is, the front end of the second scraping roll 142 faces the leading end of the first scraping roll 141 . The second scraping roller 142 is elongated in the left-right direction from the front end of the second scraping roller 142 toward the side wall 124 . A shaft portion 163 is fitted into the tapered cylindrical portion 161 of the second scraping roller 142 so as to be rotatable integrally with the tapered cylindrical portion 161 . The shaft portion 163 is rotatably supported in the accommodating space 112 by a bearing (not shown) disposed between the side wall 124 and the side partition wall portion 127a. The pulley 132 is attached to the shaft portion 163 . A belt 168 is mounted on the pulley 132 , and the aforementioned belt 168 is mounted on the motor shaft of the motor accommodated in the accommodating space 112 . Thereby, the 2nd scraping roller 142 is rotated by the drive of a motor.

Since the first and second scraping rollers 141 and 142 are slightly shorter than half of the length between the left and right side walls 123 and 124, a gap 118 is formed between the front ends of the first and second scraping rollers 141 and 142. (Refer to Figures 3 and 4). That is, the gap 118 is formed adjacent to the front ends of the first and second scraping rollers 141 and 142 . The gap 118 is formed in the substantially center of the suction space 111 in the left-right direction. The void 118 is located in front of the opening 115 of the flow path 116 . That is, the gap 118 is aligned with the opening 115 in the opening direction of the opening 115 . The gap 118 is used to remove the long dust (eg, hair) that has been wound around the first and second scraping rollers 141 and 142 .

In the casing 120 , the shielding portion 117 for reducing the opening area of the suction space 111 is provided on the lower side of the opening 115 of the flow path 116 . The shielding portion 117 protrudes toward the first and second scraping rollers 141 and 142 from the inner wall that defines the suction space 111 in the casing 120 . Specifically, the shielding portion 117 protrudes toward the first and second scraping rollers 141 and 142 from the rear partition wall portion 127b located on the rear side of the first and second scraping rollers 141 and 142 and the gap 118 (see FIG. 3 ). , 5). In the examples of FIGS. 3 and 5 , the shielding portion 117 protrudes from the lower end of the rear partition wall portion 127b toward the first and second scraping rollers 141 and 142. As a result, the shielding portion 117 is disposed on the portion constituting the lower surface of the case body 120a. By providing the shielding portion 117, the area of the suction space 111 that is not blocked by the first and second scraping rollers 141 and 142 can be reduced. For example, by the shielding portion 117, the area of the opening in which the suction space 111 is opened downward can be reduced.

More specifically, the shielding portion 117 includes a gap facing portion 117a formed at the center of the rear lower wall 126b in the left-right direction, and a roller facing portion 117b formed on the left and right sides of the gap facing portion 117a. The gap facing portion 117a protrudes to the vicinity of the gap 118 between the front ends of the first and second scraping rollers 141 and 142 (see FIG. 3 ). The roller facing portion 117b protrudes to the vicinity of a portion closer to the tip end side than the base ends of the first and second scraping rollers 141 and 142 . The protruding ends of the roller facing portions 117b are inclined with respect to the left-right direction so as to substantially follow the outer surfaces of the tapered cylindrical portions 161 of the first and second scraping rollers 141 and 142 . Thereby, the roller facing portion 117b can be formed so as not to contact the first and second scraping rollers 141 and 142, and the suction space 111 can be opened on the outer side of the shielding portion 117 in the left-right direction.

In addition, the position of the shielding portion 117 is not limited to the portion constituting the lower surface of the case body 120a. For example, the shielding portion 117 may protrude toward the first and second scraping rollers 141 and 142 from a portion above the lower end of the rear partition wall portion 127b. The rear partition wall portion 127b is an example of a portion of the inner wall of the casing, and the aforementioned portion is a portion adjacent to the portion where the diameter of the first and second scraping rollers becomes narrow, a portion adjacent to the gap 118, and a portion adjacent to the gap 118. A portion adjacent to the gap 118 between the front ends of the first and second scraping rollers. In addition, in FIG. 5, the 2nd scraping roller 142 is simplified and shown.

On the left and right sides of the shielding portion 117 , guard edge portions 119 extending to the left and right ends of the rear partition wall portion 127 b are formed. The guard portion 119 also protrudes from the rear partition wall portion 127b toward the first and second scraping rollers 141 and 142. However, the protruding amount of the guard part 119 is set to be smaller than the shielding part 117 so as not to contact the first and second scraping rollers 141 and 142 . In addition, the guard edge part 119 may be abbreviate|omitted.

A second dust collecting part 155 is provided on the lower surface of the gap facing part 117a of the shielding part 117, and the second dust collecting part 155 is formed by a raised cloth having cilia rising on the cloth surface. In addition, the material of the 2nd dust collecting part 155 is not limited to a raising cloth as long as it can catch dust when moving the suction tool 100 back and forth. The 2nd dust collecting part 155 is arrange|positioned in the position which overlaps with the opening of the flow path 116 on the lower surface of the space|gap opposing part 117a up and down.

The second dust collecting portion 155 is formed in a substantially rhombus shape as a whole, and has a first portion 155a inclined with respect to the left-right direction so that when the inhaler 100 is moved forward, dust is pushed out to the outside in the left-right direction; and a second The part 155b is inclined with respect to the left-right direction so that when the inhaler 100 is moved rearward, dust is pushed out to the outside in the left-right direction (refer to FIG. 3 ). The first portion 155a has two sides extending obliquely rearward with respect to the left-right direction from a vertex located at the center in the left-right direction. The second portion 155b has both sides extending obliquely forward with respect to the left-right direction from the vertex located at the center in the left-right direction. The vertex T where the first portion 155a and the second portion 155b intersect is located further forward than the boundary B between the roller facing portion 117b and the guard portion 119 . As a result, when the inhaler 100 is moved forward and backward, the first and second parts 155a and 155b act on the dust by pushing forces in the left and right directions, so that the dust can be easily removed from the outside of the shielding portion 117 in the left and right directions. It is sucked into the suction space 111 . In addition, the shape of the 2nd dust collecting part 155 is not limited to a substantially rhombus. For example, the second dust collecting portion 155 may be formed in an ellipse or a triangle as long as it can push out dust to the outside in the left-right direction when the inhaler 100 is moved forward or backward. Moreover, the 2nd dust collecting part 155 may be abbreviate|omitted.

A plurality of rollers 151 and 152 are arranged on the lower surface of the casing body 120a. As shown in FIG. 3 , the plurality of rollers 151 and 152 include a pair of left and right rollers 151 and 151 arranged on the left and right lower walls 126a and 126a, and an intermediate roller 152 arranged on the rear lower wall 126b.

The pair of left and right rollers 151 and 151 are rotatably attached to the left and right lower walls 126a and 126a (see FIG. 3 ). In this state, the pair of left and right rollers 151, 151 protrudes downward from the lower surfaces of the left and right lower walls 126a, 126a.

The intermediate roller 152 is disposed more inward in the left-right direction than the left-right rollers 151 and 151 in the rear lower wall 126b (see FIG. 3 ). The intermediate roller is rotatably attached to the rear lower wall 126b. In this state, the intermediate roller 152 protrudes downward from the lower surface of the rear lower wall 126b. In addition, the intermediate roller 152 may be omitted.

A pair of rear rollers 153 and 153 are rotatably attached to a rear bracket 158 which protrudes rearward from the center position in the left-right direction of the rear lower wall 126b constituting the lower surface of the casing body 120a (see FIG. 3 ). ). The pair of rear rollers 153 and 153 protrudes downward from the lower surface of the rear bracket 158 . In addition, the rear bracket 158 may be omitted. In this case, the pair of rear rollers 153 and 153 can be omitted.

In the above-mentioned suction tool 100, since the first and second scraping rollers 141 and 142 are formed so that the opening 115 of the flow channel 116 which is opened at the center of the suction space 111 in the left-right direction becomes thinner, it is possible to The dust wound around the first and second scraping rollers 141 and 142 moves in the left-right direction toward the opening 115 of the flow path 116 . In this case, in the portion where the first and second scraping rollers 141 and 142 have larger diameters, the larger portion of the suction space 111 is occupied by the first and second scraping rollers 141 and 142, which is relatively In this case, in the portion where the first and second scraping rollers 141 and 142 have small diameters, the area of the opening of the suction space 111 occupied by the first and second scraping rollers 141 and 142 becomes relatively small, so that the opening of the suction space 111 is relatively small. In the vicinity of the opening 115 of the flow path 116, the remaining area in the opening of the suction space 111 in which the first and second scraping rollers 141 and 142 do not exist is widened. The shielding portion 117 is provided in order to reduce the wide remaining area (the opening area of the suction space 111 ). That is, the shielding portion 117 protrudes toward the first and second scraping rollers 141 and 142 from the rear partition wall portion 127b of the partition wall 127 that defines the suction space 111 . As a result, the gap between the portion having a small diameter of the first and second scraping rollers 141 and 142 and the rear partition wall portion 127b adjacent to the portion is narrowed, thereby suppressing a decrease in the suction force in the suction space 111 .

In the suction tool 100 described above, since the first and second scraping rollers 141 and 142 are tapered toward the front ends, the dust that has been wound around the first and second scraping rollers 141 and 142 is scraped toward the first and second scraping rollers. The front ends of the rollers 141 and 142 move. At this time, since the gap 118 is formed between the leading ends of the first and second scraping rollers 141 and 142, the dust reaching the leading ends of the first and second scraping rollers 141 and 142 is scraped by the first and second scraping rollers. The gap 118 between the front ends of the rollers 141 and 142 can be easily removed. On the other hand, the first and second scraping rollers 141 and 142 are tapered toward the leading end, and a gap 118 is formed between the leading ends of the first and second scraping rollers 141 and 142 . And in this part, the shielding part 117 protrudes from the rear partition wall part 127b of the partition wall 127 to the 1st and 2nd scraping roller 141,142 side. Therefore, since the opening area of the suction space 111 that is not blocked by the thin-diameter portions of the first and second scraping rollers 141 and 142 is occupied by the shielding portion 117, the opening area of the suction space 111 can be reduced, so that the suction space 111 can be suppressed from entering the suction space 111. less attractive.

In the above-described suction tool 100, since the first and second scraping rollers 141 and 142 are supported by the casing 120 in a posture in which the front ends are positioned more forward than the base ends, most of the area on the front side of the suction space 111 is supported by the first and second scraping rollers 141 and 142. The first and second scraping rollers 141 and 142 are blocked. Therefore, the shielding portion 117 is not provided on the front side of the first and second scraping rollers 141 and 142 . On the other hand, a relatively wide region where the suction space 111 is not blocked by the first and second scraping rolls 141 and 142 is generated on the rear side of the first and second scraping rolls 141 and 142 . The shielding portion 117 is provided in order to reduce the area on the rear side. That is, the shielding portion 117 is located on the rear side of the gap 118 between the front ends of the first and second scraping rollers 141 and 142 from the rear partition wall portion 127b of the partition wall 127 to the first and second scraping rollers 141 and 142 side. protrude. As a result, the substantial opening area of the suction space 111 is reduced, and the reduction of the suction force in the suction space 111 can be suppressed.

In the suction device 100 described above, the shielding portion 117 is disposed on the portion constituting the lower surface of the casing 120 by protruding from the lower end of the rear partition wall 127b toward the first and second scraping rollers 141 and 142. Therefore, the opening area of the suction space 111 opened on the lower surface of the casing 120 is narrowed. Therefore, the decrease in the suction force in the suction space 111 can be suppressed more reliably.

In the above-mentioned inhaler 100, the second dust collecting portion 155 is provided on the lower surface of the shielding portion 117, and the shielding portion 117 is arranged on the portion constituting the lower surface of the casing 120, so that the second dust collecting portion 155 comes into contact with the floor surface. Therefore, when the inhaler 100 moves forward, dust accumulates on the front side of the second dust collecting portion 155 , and when the inhaler 100 moves backward, dust accumulates behind the second dust collecting portion 155 . In addition, since the second dust collecting portion 155 has two sides extending obliquely rearward with respect to the left-right direction from the vertex located at the center in the left-right direction, the dust accumulated on the front side of the second dust collecting portion 155 is subjected to a The above-mentioned both sides of the dust collecting portion 155 are sucked into the suction space 111 by the force pushing out diagonally forward. At this time, since the second dust collecting part 155 is arranged at a position overlapping the opening 115 of the flow path 116 up and down, the dust sucked into the suction space 111 is easily sucked into the opening 115 of the flow path 116 . In this way, by using the lower surface of the shielding portion 117 for the arrangement of the second dust collecting portion 155, even the dust that cannot be scraped by the first and second scraping rollers 141 and 142 can be easily collected. Dust to the vacuum cleaner 101.

In the above-mentioned inhaler 100, since the first part 155a of the second dust collecting part 155 is inclined with respect to the left-right direction, when the inhaler 100 is moved forward, the dust is pushed out to the outside in the left-right direction. Therefore, when the inhaler 100 is moved forward, the first part 155a can push out the dust to the outside in the left-right direction. Therefore, the dust captured by the second dust collecting part 155 is easily sucked into the suction space 111 from the outer side in the left-right direction of the shielding part 117 .

In the above-mentioned inhaler 100, since the second part 155b of the second dust collecting part 155 is inclined with respect to the left-right direction, when the inhaler 100 is moved backward, the dust is pushed out to the outside in the left-right direction, Therefore, when the inhaler 100 is moved backward, the second portion 155b can push out the dust to the outside in the left-right direction. Therefore, the dust captured by the second dust collecting part 155 is easily sucked into the suction space 111 from the outer side in the left-right direction of the shielding part 117 .

In the inhaler 100 described above, since the second dust collecting portion 155 is formed of a raised cloth having cilia raised on the cloth surface, dust is easily entangled in the dust collecting portion. Therefore, when the suction tool 100 is moved forward and backward, dust can be captured by the second dust collecting portion 155 more reliably.

The inhaler 100 described above is an embodiment of the present invention, and its specific configuration can be appropriately changed within a range that does not deviate from the gist of the present invention. Hereinafter, a modification of the above-described embodiment will be described.

In the above-mentioned suction tool 100, although the two first and second scraping rollers 141 and 142 are provided, the scraping roller for scraping off the dust on the floor surface may be a combination of the first and second scraping rollers in the left-right direction. One of the first and second scraping rolls 141 and 142 is one scraping roll. In this case, the scraping roller of the modification is formed so as to taper toward the center position in the left-right direction.

In the suction tool 100 described above, the first and second scraping rollers 141 and 142 are supported by the casing 120 in a posture in which the front end of the tapered cylindrical portion 161 is positioned more forward than the base end, but the tapered cylindrical portion 161 may be The center in the front end surface and the center in the base end surface are supported by the casing 120 in a posture in which they overlap in the left-right direction. In this case, since a relatively wide area in which the suction space 111 is not blocked by the first and second scraping rollers 141 and 142 is generated on the front side of the first and second scraping rollers 141 and 142, the shielding portion 210 may also be arranged on the front side of the gap 118 between the front ends of the first and second scraping rollers 141 and 142 . In this case, as shown in FIG. 6, the shielding part 210 is comprised so that it may protrude from the front side of the clearance gap 118 to the 1st and 2nd scraping rollers 141 and 142 side in the inner surface of the front cover 129, for example. In addition, in this case, the shielding portion 117 may be omitted. In addition, in FIG. 6, the 2nd scraping roller 142 is simplified and shown.

The above-described embodiment mainly includes the following configurations.

The suction device of one aspect of the above-described embodiment is a suction device attached to a vacuum cleaner that sucks dust, and includes a casing formed to define a suction space open to a lower surface, and a flow path formed thereon, and the flow path is formed from the above-mentioned flow path. In the suction space, the central opening in the width direction has an opening extending rearward; the scraping roller is arranged in the suction space and is long in the width direction; and the shielding portion is arranged in the suction space. The said scraping roller has the shape which becomes thin as it approaches the said opening of the said flow path. The shielding portion protrudes toward the scraping roller from a portion of the inner wall of the casing that defines the suction space, and the shielding portion is a portion adjacent to a portion of the scraping roller having a narrow diameter.

According to the above-mentioned configuration, since the opening of the flow passage opening in the width direction center of the suction space is formed by the scraping roller, the opening of the flow passage can be made smaller by the dust wound around the scraping roller toward the opening of the flow passage. move in the width direction. In this case, in the portion where the scraping roller has a larger diameter, a larger portion of the suction space is occupied by the scraping roller, whereas in the portion where the scraping roller has a smaller diameter, the suction space is occupied by the scraping roller. The area occupied by the scraping rollers becomes smaller. That is, in the vicinity of the opening of the flow path, the remaining area where the scraping roller does not exist becomes wide. A shielding portion is provided in order to reduce the volume of this wide remaining area. That is, the shielding portion protrudes toward the scraping roller from a portion of the inner wall that defines the suction space, and the aforementioned portion is a portion adjacent to the portion of the scraping roller that has a narrow diameter. As a result, the clearance between the part which becomes the thin diameter part of the said scraping roller and the inner wall adjacent to this part becomes narrow, and it can suppress that the attraction|suction force in a suction space falls.

In the said structure, the said scraping roll may have a 1st scraping roll and a 2nd scraping roll arrange|positioned in the said suction space so that it may be lined up in the said width direction. The first scraping roll and the second scraping roll may be arranged so that the front ends of the first scraping roll and the second scraping roll are separated from each other in the width direction. The shielding portion may protrude toward the scraping roller from a part of the inner wall, and the part may be the portion adjacent to the portion of the first scraping roller that has a narrow diameter, or the portion adjacent to the gap. , and the aforementioned portion adjacent to the aforementioned portion of the second scraping roll that has a narrow diameter.

According to this configuration, since the first scraping roller and the second scraping roller are tapered toward the front ends, the dust wound around the first and second scraping rollers moves toward the leading ends of the first and second scraping rollers. At this time, since a gap is formed between the front ends of the first and second scraping rolls, the dust reaching the leading ends of the first and second scraping rolls passes through the gap between the leading ends of the first and second scraping rolls. voids and become easy to remove. On the other hand, the first and second scraping rolls are tapered toward the leading end, and a gap is formed between the leading ends of the first and second scraping rolls. In this part, the shielding part protrudes from a part of the inner wall to the scraping roller side, and the part is the part adjacent to the part of the first scraping roller that has a small diameter, and the gap The adjacent part, and the said part adjacent to the said part which becomes the narrow diameter of the said 2nd scraping roll. Therefore, since the volume of the suction space that is not blocked by the portions of the first and second scraping rollers having a small diameter becomes small, it is possible to suppress a decrease in the suction force in the suction space.

In the above-mentioned configuration, the first scraping roller and the second scraping roller may be supported by the casing in a posture in which the front end is positioned further forward than the base end. The shielding portion may protrude from the inner wall toward the scraping roll on the rear side of the gap between the front ends of the first scraping roll and the second scraping roll.

According to this configuration, since the first scraping roller and the second scraping roller are supported by the casing with the front ends positioned forward of the base ends, most of the area on the front side in the suction space is scraped by the first and second scrapers The take-up roller is blocked. Therefore, the shielding portion may not be provided on the front side of the first and second scraping rollers. On the other hand, a relatively wide region in which the suction space is not blocked by the first and second scraping rolls is generated on the rear side of the first and second scraping rolls. A shielding portion is provided in order to reduce the area on the rear side. That is, the shielding portion protrudes from the inner wall to the scraping roll side on the rear side of the gap between the leading ends of the first and second scraping rolls. As a result, the substantial opening area of the suction space becomes small, and the reduction of the suction force in the suction space can be suppressed.

In the above-mentioned configuration, the shielding portion may be arranged in a portion constituting the lower surface of the casing in the inner wall.

According to this structure, since the shielding part is arrange|positioned in the part which comprises the lower surface of a case in the inner wall of a case, the opening area of the suction space opened to the lower surface can be reduced. Therefore, the decrease in the suction force in the suction space can be suppressed more reliably.

In the above-mentioned configuration, the dust collecting part may be further provided on the lower surface of the shielding part.

According to this configuration, since the dust collecting portion is provided on the lower surface of the shielding portion, and the shielding portion is arranged on the lower surface of the casing, it comes into contact with the floor surface. Therefore, when the suction tool moves forward, dust accumulates on the front side of the dust collecting portion, and when the suction tool moves backward, dust accumulates behind the dust collecting portion. The dust accumulated before and after the dust collecting part is sucked into the vacuum cleaner through the suction space. In this way, by utilizing the arrangement of the lower surface of the shielding portion for the dust collecting portion, even the dust that cannot be scraped off by the scraping roller can be collected by the vacuum cleaner.

In the said structure, the said dust collecting part may have the 1st part inclined with respect to the said width direction, and when moving the said suction tool forward, the dust may be pushed out to the said width direction outer side. The suction space may be opened on the outer side in the width direction of the shielding portion.

According to this configuration, when the suction device is moved forward, the first portion can push out the dust to the outer side in the width direction, so that the dust captured by the dust collecting portion can easily pass from the outer side in the width direction of the shielding portion. is sucked into the suction space.

In the said structure, the said dust collecting part may have a 2nd part inclined with respect to the said width direction, and when moving the said suction tool backward, the dust may be pushed out to the said width direction outer side.

According to this configuration, when the suction device is moved rearward, the second portion can push out the dust to the outer side in the width direction, so that the dust captured by the dust collecting portion can easily pass from the outer side in the width direction of the shielding portion. is sucked into the suction space.

In the above-mentioned configuration, the dust collecting portion may be formed by a raised cloth having cilia raised on the cloth surface.

According to this configuration, since the dust is easily entangled in the dust collecting part, when the suction tool is moved forward and backward, the dust can be more reliably captured in the dust collecting part.

industrial availability The principle of this embodiment is suitably utilized for the apparatus used for cleaning work.

100: Inhaler 101: Vacuum Cleaner 102: body part 103: Hose 104: Operation Department 111: Inhalation space 112: accommodating space 115: Opening 116: flow path 117,210: Shade 117a: Void facing part 117b: Roller facing portion 118: void 119: Edge protector 120: Shell 120a: shell body 120aa: rear side 120ab: side 121: Front Wall 122: Back Wall 122a: Recess 123, 124: Sidewalls 125: Upper Wall 126: Lower Wall 126a: Left and right lower walls 126b: Rear lower wall 127: Dividing Wall 127a: Side partition wall part 127b: Rear partition wall 128: The first dust collection department 129: Front cover 130: connector 131, 132: Pulleys 141: 1st scraping roller 142: 2nd scraping roller 151: Left and right rollers 152: Intermediate Roller 153: Rear Roller 155: The second dust collection department 155a: Part 1 155b: Part 2 158: Rear bracket 161: Conical barrel 162: Scraping Department 163: Shaft 166, 168: Belts B: Boundary T: vertex IV-IV, V-V: line

Fig. 1 is a side view of a suction-type vacuum cleaner to which the suction tool of the present embodiment is attached. Fig. 2 is a plan view of the inhaler of this embodiment. Fig. 3 is a bottom view of the inhaler of this embodiment. FIG. 4 is a cross-sectional view taken along IV-IV of FIG. 2 . FIG. 5 is a schematic cross-sectional view taken along the line V-V in FIG. 2 . FIG. 6 is a schematic cross-sectional view of a modification of the inhaler of the present embodiment.

111: Inhalation space

115: Opening

116: flow path

117: Shading

117a: Void facing part

117b: Roller facing portion

118: void

119: Edge protector

120: Shell

120a: shell body

121: Front Wall

122: Back Wall

123, 124: Sidewalls

126: Lower Wall

127a: Side partition wall part

127b: Rear partition wall

128: The first dust collection department

130: connector

141: 1st scraping roller

142: 2nd scraping roller

151: Left and right rollers

152: Intermediate Roller

153: Rear Roller

155: The second dust collection department

155a: Part 1

155b: Part 2

158: Rear bracket

161: Conical barrel

162: scraping roller

B: Boundary

T: vertex

Claims (8)

An inhaler, mounted on a vacuum cleaner for attracting dust, has: The casing is formed so as to define a suction space open to the lower surface, and a flow path is formed, and the flow path is a flow path extending rearward from an opening opened in the center of the width direction in the suction space; a scraping roller, disposed in the suction space and long in the width direction; and The shielding part is arranged in the said suction space, The scraping roller has a shape that becomes thinner as it approaches the opening of the flow path, The shielding portion protrudes toward the scraping roller from a portion of the inner wall of the casing that defines the suction space, and the shielding portion is a portion adjacent to a portion of the scraping roller having a narrow diameter. The suction device of claim 1, wherein the scraping roller has: The first scraping roll and the second scraping roll are arranged in the suction space so as to be aligned in the width direction, The first scraping roll and the second scraping roll are arranged so that the front ends of the first scraping roll and the second scraping roll are separated from each other in the width direction, The shielding portion protrudes toward the scraping roller from a part of the inner wall, and the part is the portion adjacent to the portion of the first scraping roller that has a narrow diameter, the portion adjacent to the gap, and The said part adjacent to the said part which becomes the narrow diameter of the said 2nd scraping roll. The suction device according to claim 2, wherein the first scraping roller and the second scraping roller are supported by the casing with the front end positioned further forward than the base end, The shielding portion protrudes from the inner wall toward the scraping roll on the rear side of the gap between the front ends of the first scraping roll and the second scraping roll. The inhaler according to any one of claims 1 to 3, wherein the shielding portion is disposed on a portion of the inner wall that constitutes the lower surface of the housing. Such as the inhalation device of claim 4, it further has: The dust collecting part is arranged on the lower surface of the shielding part. The inhaler of claim 5, wherein the dust collecting portion has: The first part is inclined with respect to the width direction, so that when the suction device is moved forward, the dust is pushed out to the outer side in the width direction, The said suction space is opened to the said width direction outer side of the said shielding part. The suction device of claim 6, wherein the aforementioned dust collecting portion has: The second part is inclined with respect to the width direction so as to push out dust to the outside in the width direction when the suction tool is moved backward. The inhaler according to claim 5, wherein the dust collecting portion is formed of a raised cloth having cilia raised on the cloth surface.

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