JP6913889B2 - Dust collector - Google Patents

Description

The present invention relates to a dust collector for collecting dust.

The dust collector greatly contributes to the efficiency of cleaning work. Unlike a general vacuum cleaner, the user moves a cleaning tool (for example, a mop) to be dust-removed, not a dust collector, around the dust collector to remove dust adhering to the mop.

Patent Document 1 discloses a dust collector capable of removing dust from a cleaning tool not only from a suction port formed at a lower portion of a housing but also from a hose extending from the housing. According to Patent Document 1, the operator can move the tip of the hose extending from the housing to a desired position. Therefore, the operator can suck the dust adhering to the portion (for example, the upper surface of the mop) that is difficult to remove by suction from the suction port at the lower part of the housing from the hose.

JP-A-2015-39378

According to Patent Document 1, when an operator uses a hose, it is necessary to remove the tip of the hose from the housing. Since the work of removing the tip of the hose from the housing is not directly related to dust removal, it is preferable that the period of the work of removing the tip of the hose from the housing is shortened as much as possible. The operator does not have to remove the tip of the hose from the housing if the dust can be extensively removed from the cleaning tool by suction from the suction port at the bottom of the housing. However, the suction port of the dust collector of Patent Document 1 is not designed so that dust can be removed over a wide range from the cleaning tool.

An object of the present invention is to provide a dust collector capable of removing dust from a cleaning tool over a wide range through a suction port.

In the dust collector according to one aspect of the present invention, a suction port forming portion for forming a suction port for sucking dust adhering to the cleaning tool and a suction force for sucking the dust are applied to the suction port. Moreover, the dust collecting mechanism for collecting the dust sucked from the suction port is provided. The suction port forming portion has a lateral extension edge extending laterally at a position separated from the floor surface by a predetermined height, and a lateral extension edge that is bent rearward from the end portion of the side extension edge to form the floor surface and the side extension edge. Includes a pair of notched edges, each forming a notched region recessed rearward from the end of the opening region formed between. The contour of the suction port is formed by the lateral extending edge and the pair of notched edges. The dust collecting mechanism includes a storage portion for storing the dust sucked through the suction port, and a guide pipe portion for guiding the dust from the suction port to the storage portion. The housing has a front wall having a lower edge to which the lateral extension is attached and a pair of side walls each having an attachment edge to which the pair of notched edges are attached. The lateral extending edge and the pair of notched edges are integrally formed with the guide pipe portion.

According to the above configuration, each of the pair of notched edges is rearward from the end of the opening region formed between the floor surface and the lateral extension edge extending laterally at a position separated from the floor surface by a predetermined height. A recessed cutout area is formed in the cleaning tool so that the cleaning tool can be inserted rearward through the opening area. As a result, the above-mentioned dust collector has a suction force from the dust collecting mechanism over a wide range of the cleaning tool, as compared with a conventional dust collector having a suction port that is not formed to allow insertion of the cleaning tool. The dust adhering to the cleaning tool can be collected by the dust collecting mechanism.

Since each of the pair of notch edges forms a notch area at the end of the opening area, the operator can move the cleaning tool inserted into the suction port sideways. Therefore, the operator can move the cleaning tool inserted into the suction port to the side so that the suction force of the dust collecting mechanism can be applied to a wider range. Since the dust collecting mechanism is housed in the housing, it is separated from the external space where the operator works by the housing. Therefore, the dust collecting mechanism is protected by the housing, and the operator can safely perform the dust removing work. Since the suction port forming portion is integrally formed with the guide pipe portion, no assembly error occurs between the suction port forming portion and the guide pipe portion. Therefore, the dust is smoothly guided from the suction port to the storage portion for storing the dust by the guide pipe portion. Since the lateral extending edge is attached to the lower edge of the front wall of the housing and the pair of mounting edges are attached to the mounting edges of the pair of side walls of the housing, the suction port forming portion and the guide pipe portion are housing. It is fixed to the body. Even if the operator moves the cleaning tools inserted into the suction port to the side, they do not displace relative to the housing, so an excessive load is applied to the suction port forming portion and the dust collecting mechanism connected to the suction port forming portion. do not have.

With respect to the above configuration, the predetermined height may be a value in the range of 20 mm or more and 100 mm or less from the floor surface.

According to the above configuration, since the predetermined height is a value of 20 mm or more from the floor surface, the suction port may have a sufficient width in the height direction for the operator to insert various cleaning tools. can. Since the predetermined height is a value in the range of 100 mm or less from the floor surface, the suction port is not excessively wide, and the amount of air flowing into the suction port is suppressed to a low level without contributing to dust removal from the cleaning tool. Be done. That is, the dust collector can efficiently collect the dust adhering to the cleaning tool.

With respect to the above configuration, the dust collector may further include an elastic scraping portion formed to scrape the dust from the cleaning tool. The elastic scraping portion may be arranged along at least a part of the lateral extending edge and the pair of notched edges.

According to the above configuration, the elastic scraping portion formed so as to scrape the dust from the cleaning tool is arranged along at least a part of the lateral extending edge and the pair of notched edges, so that the operator can use the elastic scraping portion. When the cleaning tool is inserted into the suction port and when the operator moves the cleaning tool inserted into the suction port sideways, the elastic scraping unit can scrape the dust adhering to the cleaning tool. As a result, the adhesive force of the dust to the cleaning tool is weakened, so that the dust can be separated from the cleaning tool by the suction force from the dust collecting mechanism and collected by the dust collecting mechanism.

With respect to the above configuration, the dust collector may further include legs protruding forward from the housing along the floor surface in the suction port.

According to the above configuration, since the legs project forward from the housing along the floor surface in the suction port, the housing does not easily fall forward. In addition, the cleaning tool inserted into the suction port will be located between the leg and the lateral edge, so when the housing is pushed backward by the cleaning tool and is about to fall backward, The legs can be caught by the cleaning tool to prevent the housing from tipping backwards.

With respect to the above configuration, the legs may be thinner toward the front.

According to the above configuration, since the legs are thinned toward the front, the operator can insert the cleaning tool into the suction port without hooking the cleaning tool on the front end of the leg portion.

With respect to the above configuration, the legs may have an arcuately curved top surface.

According to the above configuration, since the legs have an arc-shaped curved upper surface, the operator can smoothly move the cleaning tool inserted into the suction port sideways without being disturbed by the legs.

With respect to the above configuration, the dust collector includes an attachment pipe formed so as to be connectable to the guide pipe portion via the housing, and an outer opening formed in the housing so that the attachment pipe can be inserted therethrough. And an inner opening formed in the guide tube so as to connect the attachment tube inserted into the outer opening, and a lid for closing the guide tube. The lid portion may be removable from the housing and the guide tube portion.

According to the above configuration, since the outer opening is formed in the housing and the inner opening is formed in the guide tube portion, the operator inserts the attachment tube into the outer opening of the housing, and then inserts the attachment tube into the outer opening of the housing. The attachment pipe can be connected to the guide pipe portion by inserting it into the inner opening of the guide pipe portion. Since the suction force of the dust collecting mechanism acts on the attachment pipe through the guide pipe portion, the operator can also use the attachment pipe to remove the dust from the cleaning tool.

Since the lid closes the outer and inner openings, a large suction force can act on the suction port when the attachment tube is not used. When the lid is removed, both the outer opening and the inner opening are opened, so that the operator can attach the attachment tube in a short time.

The dust collector according to another aspect of the present invention includes a housing that forms a suction port for sucking dust adhering to the cleaning tool, and a storage that collects the dust sucked from the suction port in the housing. A dust collecting mechanism having a portion, a guide pipe portion for guiding the dust from the suction port to the storage portion, an attachment pipe formed so as to be connectable to the guide pipe portion, and the attachment pipe so as to be connected. An outer opening formed in the housing, an inner opening formed in the guide tube portion so as to connect the attachment tube inserted into the outer opening, and a lid portion for closing the guide tube portion. I have. The lid portion is removable from the housing and the guide tube portion. The guide pipe portion is bent from the suction port to a first section extending rearward along the floor surface, a second section bent from the first section and extending upward, and bent from the second section to collect the dust. and includes a third section for guiding the reservoir, the. The lid includes the inside opening close closing portion formed in the bent portion between the second section and the third section. The closed portion has a cross section formed so that the boundary between the closed portion and the guide pipe portion forming the bent portion is an obtuse angle on a virtual vertical plane extending rearward from the front wall. It has.

According to the above configuration, the inner opening is formed at a bending portion between a second section that bends from the first section and extends upward and a third section that bends from the second section and guides dust to the storage portion. Therefore, the attachment tube can extend from the upper part of the housing. Therefore, the operator can operate the attachment tube without bending down deeply.

The closed portion of the lid portion that closes the inner opening is formed so that the boundary between the closed portion and the guide pipe portion forming the bending portion is an obtuse angle on a virtual vertical plane extending rearward from the front wall. Since it has a vertical cross section, the air flowing along the guide pipe portion suppresses the generation of eddy currents and the like generated at the boundary portion between the closed portion and the guide pipe portion, and is less likely to stay. As a result, the dust sucked from the suction port can be smoothly guided to the storage portion.

The dust collector according to still another aspect of the present invention collects the dust adhering to the cleaning tool into the housing, which forms a suction port, and the dust sucked from the suction port in the housing. A dust collecting mechanism having a storage portion, a guide pipe portion for guiding the dust from the suction port to the storage portion, an attachment pipe formed so as to be connectable to the guide pipe portion, and the attachment pipe are connected. A lid that closes the outer opening formed in the housing and the inner opening formed in the guide tube so that the attachment tube inserted into the outer opening is connected. It has. The lid portion is removable from the housing and the guide tube portion. The guide pipe portion is bent from the suction port to a first section extending rearward along the floor surface, a second section bent from the first section and extending upward, and bent from the second section to collect the dust. and includes a third section for guiding the reservoir, the. The lid includes the inside opening close closing portion formed in the bent portion between the second section and the third section. The closure part, on a virtual vertical plane extending rearwardly from said front wall, has a cross section that forms an arcuate contour which is curved toward the second section to the third section.

According to the above configuration, the closed portion of the lid portion that closes the inner opening forms an arcuate contour curved from the second section to the third section on a virtual vertical plane extending rearward from the front wall. Since it has a cross section, the air flowing along the guide pipe portion suppresses the generation of eddy currents and the like generated at the boundary portion between the closed portion and the guide pipe portion, and is less likely to stay. As a result, the dust sucked from the suction port can be smoothly guided to the storage portion.

With respect to the above configuration, a flow path narrowing rearward may be formed in the first section.

The suction port is preferably formed wide so that the operator can insert the cleaning tool into the suction port, while the flow path in the second section is designed to be narrow so that the suction force is maintained at a high level. Is preferable. According to the above configuration, since the flow path narrowing rearward is formed in the first section, the step that can be formed at the boundary between the first section and the second section does not become excessively large. Therefore, the risk that the dust sucked through the suction port is caught in the boundary between the first section and the second section is low.

The above-mentioned dust collector can remove dust from the cleaning tool over a wide range through the suction port.

It is the schematic sectional drawing of the dust collector of 1st Embodiment. It is a schematic perspective view of the dust collector shown in FIG. It is the schematic perspective view of the guide tube part shown in FIG. It is a schematic perspective view of the dust collector shown in FIG. It is a schematic perspective view of the dust collector shown in FIG. It is a schematic perspective view of the dust collector shown in FIG. It is a schematic development perspective view of the silencer of the dust collector shown in FIG. It is a schematic plan view of the silencer shown in FIG. 6A. It is a schematic front view of the dust collector shown in FIG. It is the schematic perspective view of the dust collector of 2nd Embodiment. It is a schematic perspective view of the dust collector of 3rd Embodiment. It is a schematic side view of the dust collector shown in FIG. 9A. It is a schematic perspective view of the dust collector of 4th Embodiment.

<First Embodiment>
FIG. 1 is a schematic cross-sectional view of the dust collector 100 of the first embodiment. FIG. 2 is a schematic perspective view of the dust collector 100. The dust collector 100 will be described with reference to FIGS. 1 and 2. The terms "upstream" and "downstream" used in the following description mean upstream and downstream in the flow direction of the airflow generated in the dust collector 100.

The dust collector 100 can be suitably used for sucking dust adhering to a cleaning tool (not shown) after use. The dust collector 100 includes a suction port forming portion 110, a dust collecting mechanism 120, and a housing 130. The suction port forming portion 110 is attached to the lower part of the housing 130 and forms a suction port 111 on which dust adhering to the cleaning tool is sucked. As shown in FIG. 1, the suction port 111 is wider than the suction port of the conventional dust collector, and the operator can insert a part of the cleaning tool into the suction port 111. The dust collecting mechanism 120 is arranged in the housing 130. The dust collecting mechanism 120 exerts a suction force for sucking dust on the suction port 111. Therefore, when the operator inserts the cleaning tool into the suction port 111, the suction force generated by the dust collecting mechanism 120 acts on the cleaning tool, and the dust adhering to the cleaning tool is separated from the cleaning tool. The dust separated from the cleaning tool is collected by the dust collecting mechanism 120.

As shown in FIG. 2, the housing 130 includes a front wall 131, a left front wall 132, a right front wall 133, a left rear wall 134, a right rear wall 135, an upper wall 136, and a lower wall 137. And, including. The front wall 131 is erected at a predetermined height position from the floor surface FLR (see FIG. 1). FIG. 1 shows a cross section of the dust collector 100 on a virtual vertical plane that includes the center of the front wall 131 and extends rearward from the front wall 131. The left front wall 132 bends rearward from the left edge of the front wall 131. The right front wall 133 bends rearward from the right edge of the front wall 131. The left rear wall 134 bends by a predetermined angle from the trailing edge of the left front wall 132 and fits the trailing edge of the right rear wall 135 on the above-mentioned vertical plane. The right rear wall 135 bends by a predetermined angle from the trailing edge of the right front wall 133 and meets the trailing edge of the left rear wall 134 on the above-mentioned vertical plane. Therefore, the front wall 131, the left front wall 132, the right front wall 133, the left rear wall 134, and the right rear wall 135 form a substantially pentagonal cross-sectional contour on the horizontal plane. The upper wall 136 closes a substantially pentagonal opening formed by the upper edges of the front wall 131, the left front wall 132, the right front wall 133, the left rear wall 134 and the right rear wall 135. The lower wall 137 closes a substantially pentagonal opening formed by the lower edges of the front wall 131, the left front wall 132, the right front wall 133, the left rear wall 134 and the right rear wall 135. The lower wall 137 is installed on the floor FLR. With respect to this embodiment, the housing 130 has a pentagonal columnar shape as a whole. However, the housing may have other shapes. The principle of this embodiment is not limited to a specific shape of the housing.

As shown in FIG. 1, the dust collecting mechanism 120 is housed in the internal space of the housing 130. The dust collecting mechanism 120 includes a suction device 121, a storage unit 122, and a guide pipe unit 123. The suction device 121 generates a suction force for sucking dust from the cleaning tool. The suction force generated by the suction device 121 acts on the cleaning tool inserted into the suction port 111 to separate dust from the cleaning tool. The dust separated from the cleaning tool is guided from the suction port 111 to the storage portion 122 by the guide pipe portion 123. As a result, the storage unit 122 connected to the downstream end of the guide pipe unit 123 can store dust.

The suction mechanism used in a general dust collector can be applied to the suction device 121. For example, the suction device 121 may be formed by a general motor and a fan rotated by the motor. For this embodiment, the fan rotated by the motor produces a downward airflow. The downward airflow is finally exhausted from a number of vent holes (see FIG. 2) formed in each of the left front wall 132 and the right front wall 133.

The storage unit 122 is arranged above the suction device 121. The storage unit 122 includes a dust collecting pack 124 and a drawer case 127. The downward airflow generated by the suction device 121 acts on the dust collection pack 124 through the drawer case 127, and creates a negative pressure environment in the dust collection pack 124. The dust collection pack 124 is connected to the downstream end of the guide pipe portion 123. As a result, the dust guided by the guide pipe portion 123 is guided to the negative pressure environment in the dust collection pack 124 and can reach the inside of the dust collection pack 124. The dust collecting pack 124 may be a pack member used in a general dust collecting device. Therefore, the principle of this embodiment is not limited to the specific structure of the dust collection pack 124.

As shown in FIG. 2, the drawer case 127 includes a front wall 125 fitted into a substantially rectangular opening formed in the front wall 131. A handle portion 126 held by an operator who intends to take out the dust collecting pack 124 arranged in the drawer case 127 is formed on the front wall 125. The operator can grasp the handle portion 126 and pull out the drawer case 127 forward. At this time, the dust collection pack 124 in the drawer case 127 moves forward together with the drawer case 127 and is exposed from the housing 130. After that, the operator can replace the dust collecting pack 124 in which the dust has accumulated with a new dust collecting pack 124. The drawer case 127 is not limited to the method of pulling forward. The dust collection pack 124 may be taken out by a method in which a part of the drawer case 127 is pivotally supported and opened / closed.

FIG. 3 is a schematic perspective view of the guide pipe portion 123. The guide tube portion 123 will be described with reference to FIGS. 1 to 3.

The guide pipe portion 123 includes a lower pipe portion 210, an upright pipe portion 220, and an upper pipe portion 230. The lower pipe portion 210 forms a first section extending rearward from the suction port 111 along the floor surface FLR. The erection pipe portion 220 forms a second section that bends from the first section and extends upward. The vertical pipe portion 220 extends upward from the downstream end of the lower pipe portion 210. The upper pipe portion 230 bends forward from the second section to form a third section that guides dust to the dust collection pack 124. The upper pipe portion 230 extends forward along the upper wall 136 from the upper end of the vertical pipe portion 220 and is bent downward. The dust collection pack 124 is connected to the downstream end of the upper pipe portion 230 that is bent downward.

FIG. 3 shows a suction port forming portion 110 formed integrally with the upstream end of the lower pipe portion 210. The suction port forming portion 110 includes a lateral extending edge 112 and a pair of notched edges 113. The contour of the suction port 111 is formed by the lateral extending edge 112 and the pair of notched edges 113.

The side extending edge 112 extends laterally at a position separated above the floor surface FLR by a predetermined height. The side extending edge 112 is attached to the lower edge of the front wall 131 (that is, the edge surface facing the floor surface FLR) and extends between the left front wall 132 and the right front wall 133. As a result, an opening area opened forward is formed between the floor surface FLR and the side extending edge 112 so as to allow insertion of a cleaning tool (not shown).

Each of the pair of notched edges 113 is bent rearward from the end (ie, left or right end) of the lateral extension 112 and is curved toward the floor FLR. As a result, a notch region that is recessed rearward from the opening region and is open laterally is formed. The lower part of the front edge of each of the left front wall 132 and the right front wall 133 is formed by a mounting edge that is curved corresponding to the curvature of each of the pair of notched edges 113. The pair of notched edges 113 are fixed to the mounting edges of the left front wall 132 and the right front wall 133, respectively. For this embodiment, the pair of side walls is exemplified by the left front wall 132 and the right front wall 133.

Since the notch area recessed in the rear is formed, the operator can insert a cleaning tool wider than the housing 130 into the opening area opened in the front and push it backward. Since the cleaning tool is inserted into the suction port 111 over a wide range, the suction force generated by the suction device 121 can act on a wide range of the cleaning tool. As described above, since the notch area formed by the pair of notch edges 113 is open laterally, the operator can move the cleaning tool inserted into the suction port 111 to the side (that is, to the left or right). Can be moved. As a result, the suction force generated by the suction device 121 can act on a wider range of the cleaning tool.

In FIG. 3, the distance from the floor surface FLR to the lateral extending edge 112 is indicated by the symbol “H”. The value of the distance "H" is preferably set in the range of 20 mm or more and 100 mm or less. If the distance "H" is 20 mm or more, various cleaning tools can be inserted into the suction port 111, while if the distance "H" is less than 20 mm, the cleaning tool is caught by the suction port 111. The risk of the dust collector 100 tipping over increases. When the distance "H" is 100 mm or less, most of the suction port 111 is closed by the cleaning tool inserted into the suction port 111, so that a strong suction force can act on the cleaning tool. When the distance "H" exceeds 100 mm, the suction port 111 becomes excessively larger than the insertion portion of the cleaning tool, and a large amount of air that does not contribute to the separation of dust from the cleaning tool is sucked. According to the research by the present inventors, it is optimal that the distance "H" is set to a value in the range of 40 mm to 60 mm.

<Other features>
The designer can give various features to the above-mentioned dust collector 100. The features described below do not limit any of the design principles of the dust collector 100 described above.

(Attachment tube)
Since the above-mentioned dust collector 100 allows the operator to insert the cleaning tool into the suction port 111, dust can be sucked from the cleaning tool through the suction port 111 over a wide range. However, the dust collector 100 may have an additional pipe member extending outward from the housing 130. The operator may use an additional pipe member to suck dust adhering to a portion that is difficult to insert into the suction port 111 or dust scattered around the dust collector 100.

FIG. 4 is a schematic perspective view of the dust collector 100. The dust collector 100 will be further described with reference to FIGS. 1 to 4.

As shown in FIGS. 2 and 4, the dust collector 100 further includes a lid 140 that closes the outer opening 138 formed in the upper wall 136 of the housing 130. The lid 140 shown in FIG. 2 closes the outer opening 138. The lid 140 shown in FIG. 4 has been removed from the upper wall 136.

As shown in FIG. 4, the lid portion 140 includes a substantially fan-shaped plate portion 141 and a protruding portion 142 projecting downward from the plate portion 141. When the lid 140 closes the outer opening 138 (see FIG. 2), the overhang 142 is pushed into the housing 130 (see FIG. 1) while the plate 141 appears on the upper wall 136. (See FIG. 2). FIG. 3 shows an inner opening 221 opened upward at the upper end of the vertical pipe portion 220. The inner opening 221 is formed at a bending portion between the second section formed by the upright pipe portion 220 and the third section formed by the upper pipe portion 230. As shown in FIG. 1, the protrusion 142 is fitted into the inner opening 221. Therefore, the lid 140 can close the outer opening 138 and the inner opening 221. Although the lid portion 140 is described in a configuration in which the inner opening portion 221 is closed by fitting the lid portion 140, the lid portion 140 may be configured to be axially supported by a part of the housing 130 and opened / closed.

As shown in FIG. 4, the plate portion 141 and the protruding portion 142 form a ridge 143 erected between the two recesses and the two recesses. The operator can insert a finger into the two recesses and pinch the ridge 143. After that, the operator can lift the lid portion 140 and remove it from the housing 130 and the guide pipe portion 123. As a result, the outer opening 138 and the inner opening 221 are opened.

5A and 5B are schematic perspective views of the dust collector 100. The dust collector 100 will be further described with reference to FIGS. 1, 3, 5A and 5B.

As shown in FIGS. 5A and 5B, the dust collector 100 further includes an attachment pipe 150 as the above-mentioned additional pipe member. The attachment tube 150 is connected to the guide tube portion 123 (see FIG. 1) and extends from the upper wall 136 of the housing 130 (see FIG. 5B). The operator can use the attachment pipe 150 to suck dust adhering to a portion that is difficult to insert into the suction port 111 and dust scattered around the dust collector 100.

As shown in FIG. 5A, the attachment tube 150 includes a base end box 151, a tip tube 152, and a bellows tube 153. The base end box 151 is inserted into the inner opening 221 (see FIG. 3) of the guide tube portion 123 through the outer opening 138. The bellows tube 153 extends between the base end box 151 and the tip end tube 152. Since the bellows tube 153 can be bent according to the operation of the operator, the operator can move the tip tube 152 to a desired position.

The base end box 151 includes a bottom wall portion 154 and a peripheral wall portion 155 erected above the bottom wall portion 154. When the base end box 151 is inserted into the inner opening 221 the bottom wall 154 is upstream of the connection between the upright pipe 220 (see FIG. 1) and the upper pipe 230 (see FIG. 1). Close the vertical pipe portion 220 with. Therefore, while the attachment tube 150 is attached to the guide tube portion 123, the suction force generated by the suction device 121 (see FIG. 1) does not act on the suction port 111. An opening 156 that opens toward the upper pipe portion 230 is formed in the peripheral wall portion 155. Therefore, while the attachment pipe 150 is attached to the guide pipe portion 123, the suction force generated by the suction device 121 can act on the attachment pipe 150 through the opening 156 of the upper pipe portion 230 and the peripheral wall portion 155.

The base end of the bellows tube 153 communicates with the internal space of the base end box 151. Therefore, the suction force generated by the suction device 121 can act on the tip cylinder 152 attached to the tip of the bellows tube 153 through the base end box 151 and the bellows tube 153. As shown in FIGS. 5A and 5B, the tip tube 152 forms an opening 157. Therefore, the operator can bring the opening 157 of the tip cylinder 152 closer to a desired position and suck the dust through the opening 157 of the tip cylinder 152. Dust can sequentially pass through the tip tube 152, the bellows tube 153, the base end box 151, and the upper tube portion 230, and can be stored in the dust collection pack 124 (see FIG. 1).

As shown in FIG. 1, the protrusion 142 of the lid 140 includes a closure 144 that closes the inner opening 221 (see FIG. 3). FIG. 1 shows two angles “θ1” and “θ2” formed at the boundary between the closed portion 144 and the guide pipe portion 123. The closed portion 144 has a cross section formed so that the angles “θ1” and “θ2” are both obtuse angles (90 ° <θ1, θ2 <180 °). Since obtuse angles "θ1" and "θ2" are formed at the boundary between the closed portion 144 and the guide pipe portion 123, the airflow generated by the suction device 121 is between the closed portion 144 and the guide pipe portion 123. It can smoothly flow from the vertical pipe portion 220 to the upper pipe portion 230 without staying at the boundary. As a result, the risk that the dust flowing with the air flow is caught in the boundary between the closing portion 144 and the guide pipe portion 123 is reduced.

As shown by the solid line in FIG. 1, the closed portion 144 draws a linear contour on a virtual vertical plane extending rearward from the front wall 131. However, as shown by the dotted line in FIG. 1, the closed portion 144 is formed by the upper pipe portion 230 from the second section formed by the vertical pipe portion 220 on a virtual vertical plane extending rearward from the front wall 131. It may have a cross section that draws an arcuate contour that is gently curved toward the third section to be formed.

(Connecting part between suction port forming part and guide pipe part)
As shown in FIG. 3, the lower pipe portion 210 of the guide pipe portion 123 includes an upstream end portion 211, an intermediate portion 212, and a downstream end portion 213. The suction port forming portion 110 forming the suction port 111 is integrated with the upstream end portion 211. The vertical pipe portion 220 is connected to the downstream end portion 213. The intermediate portion 212 extends rearward from the upstream end portion 211 and connects to the downstream end portion 213. As described above, the suction port 111 is formed to be wide enough for the operator to insert the cleaning tool. On the other hand, the inner diameter of the vertical pipe portion 220 is determined so that a suction force sufficient to draw dust upward against gravity is maintained. The upstream end 211 and the intermediate 212 of the lower pipe 210 are formed so that the flow path is gradually narrowed so that the step is not formed on the inner wall surface of the boundary between the downstream end 213 and the standing pipe 220. .. Since the step is not formed on the inner wall surface of the boundary between the downstream end portion 213 and the erection pipe portion 220, dust flows into the erection pipe portion 220 without being caught by the boundary between the downstream end portion 213 and the erection pipe portion 220. can do.

The upstream end 211 includes an upper wall 311 and a lower wall 312 and a pair of side walls 313. The pair of side walls 313 erected between the upper wall 311 and the lower wall 312 are respectively bent rearward from the pair of notched edges 113 of the suction port forming portion 110. The distance between the pair of side walls 313 is substantially constant from the connection portion with the pair of notched edges 113 to the connection portion with the intermediate portion 212. The upper wall 311 includes a horizontal wall portion 314 and an inclined wall portion 315. The horizontal wall portion 314 extends rearward from the side extending edge 112 of the suction port forming portion 110 and is substantially parallel to the floor surface FLR. The inclined wall portion 315 bends downward from the horizontal wall portion 314 to form an inclined inner wall inclined to the connection portion with the intermediate portion 212. As shown in FIG. 1, the lower wall 312 located below the upper wall 311 forms an inclined inner wall inclined upward toward the connecting portion with the intermediate portion 212. Therefore, the upstream end portion 211 forms a flow path that narrows in the vertical direction. As shown in FIG. 3, unlike the upstream end, the intermediate 212 forms a flow path that narrows rearward in the width direction. As a result, in the first section formed by the lower pipe portion 210 of the guide pipe portion 123, the flow path for guiding the dust gradually narrows in the vertical direction and the width direction. As a result, the downstream end portion 213 extending downstream with respect to the intermediate portion 212 can have the same thickness as the standing pipe portion 220, and the connection portion between the downstream end portion 213 and the standing pipe portion 220. Can be connected to the vertical pipe portion 220 without forming a large step in the above. As a result, the dust sucked from the suction port 111 can smoothly pass through the connection portion between the downstream end portion 213 and the erection pipe portion 220.

(Silencer)
As shown in FIG. 3, the dust collector 100 includes a silencer 160 that bulges upward from the upper surface of the intermediate portion 212 of the lower pipe portion 210. The silencer 160 reduces the level of noise caused by the airflow generated in the guide tube portion 123.

FIG. 6A is a schematic developed perspective view of the silencer 160. FIG. 6B is a schematic plan view of the silencer 160. The silencer 160 will be described with reference to FIGS. 1, 6A and 6B.

As shown in FIG. 6A, the silencer 160 includes an upright wall 161, a lid 162, and a sound absorbing mat 163. The upper wall of the intermediate portion 212 of the lower pipe portion 210 includes a substantially trapezoidal porous region 214 in which a large number of through holes are formed. The erection wall 161 is a substantially trapezoidal tubular portion erected on the upper wall of the intermediate portion 212 so as to surround the porous region 214. The sound absorbing mat 163 is fitted in the space surrounded by the erection wall 161 and placed on the porous region 214. The lid portion 162 covers the erection wall 161. As a result, the sound absorbing mat 163 can be confined in the space surrounded by the porous region 214, the erection wall 161 and the lid portion 162.

As shown in FIG. 6B, the large number of through holes in the porous region 214 form a staggered pattern. The size of the through holes, the number of through holes, and the formation pattern of the through holes are determined so that a high sound absorption effect can be obtained. In general, if the total area of a large number of through holes is large, many noise components are likely to reach the sound absorbing mat 163, and the noise level is significantly reduced. The sound absorbing mat 163 can be formed of urethane foam or another material exhibiting a high sound absorbing effect.

(Elastic scraping part)
FIG. 7 is a schematic front view of the dust collector 100. The dust collector 100 will be described with reference to FIGS. 1 and 7.

Dust may adhere to the cleaning tool with a strong force. In this case, it may be difficult to separate the dust from the cleaning tool only by the suction force generated by the suction device 121. The dust collector 100 can include an elastic scraping unit 170 for weakening the adhesive force between the dust and the cleaning tool. The elastic scraping portion 170 is a comb-shaped or corrugated thin piece formed of an elastic member such as rubber, silicone resin, or elastomer. The elastic scraping portion 170 is attached to the lower surface of the side extending edge 112 of the suction port forming portion 110, and projects downward from the side extending edge 112.

As described above, the operator can insert the cleaning tool into the suction port 111 formed by the suction port forming portion 110. When the operator pushes the cleaning tool backward from the opening area between the side extending edge 112 and the floor surface FLR, the elastic scraping portion 170 rubs against the upper surface of the insertion portion of the cleaning tool and can scrape out dust. As a result, the adhesive force between the dust scraped by the elastic scraping unit 170 and the cleaning tool is weakened, and the dust can be separated from the cleaning tool by the suction force acting on the suction port 111. The operator can also move the cleaning tool up and down or left and right in the suction port 111, and rub the cleaning tool against the elastic scraping portion 170. As a result, the dust adhering to the cleaning tool can be effectively scraped off from the cleaning tool.

<Second Embodiment>
FIG. 8 is a schematic perspective view of the dust collector 100A of the second embodiment. The dust collector 100A will be described with reference to FIGS. 1 and 8.

The dust collector 100A differs from the dust collector 100 of the first embodiment (see FIG. 1) only in that it includes additional elastic scraping portions 170A and 170B. Therefore, the description of the first embodiment is applied to parts other than the elastic scraping portions 170A and 170B.

The elastic scraping portions 170A and 170B are attached to the notch edge 113 of the suction port forming portion 110. Similar to the elastic scraping portion 170 attached to the side extending edge 112 of the suction port forming portion 110, the elastic scraping portions 170A and 170B are comb-shaped or comb-shaped formed from elastic members such as rubber, silicon resin, and elastomer. It is a fragment of the waveform.

The elastic scraping portion 170A is attached to the front end of the notch edge 113 and projects downward from the notch edge 113. The elastic scraping portion 170A projecting downward from the notch edge 113 forms a plurality of comb tooth shapes or corrugations extending rearward. The elastic scraping portion 170B is attached to the rear end of the notch edge 113 and projects forward. The elastic scraping portion 170B projecting forward from the notch edge 113 forms a plurality of comb tooth shapes or corrugations extending in the vertical direction.

The elastic scraping unit 170A can effectively scrape dust when the operator moves the cleaning tool laterally in the suction port 111. In addition, the elastic scraping portion 170A protruding downward from the notch edge 113 can effectively scrape dust even when the operator pushes the cleaning tool backward. The elastic scraping portion 170B projecting forward from the notch edge 113 can effectively scrape dust even when the operator moves the cleaning tool vertically in the suction port 111.

<Third Embodiment>
FIG. 9A is a schematic perspective view of the dust collector 100B of the third embodiment. FIG. 9B is a schematic side view of the dust collector 100B. The dust collector 100B will be described with reference to FIGS. 1, 9A and 9B.

The dust collector 100B differs from the dust collector 100 of the first embodiment (see FIG. 1) only in that it includes a pair of legs 180. Therefore, the description of the first embodiment is applied to a portion other than the leg 180.

The left leg 180 projects forward along the floor FLR from the lower end of the front edge of the left front wall 132 in the suction port 111. The right leg 180 projects forward along the floor FLR from the lower end of the front edge of the right front wall 133 in the suction port 111. Therefore, even if a force that displaces the front wall 131 downward acts on the housing 130, the dust collector 100B is less likely to tip over. When the operator inserts the cleaning tool into the suction port 111, the cleaning tool is located between the leg 180 and the front wall 131. When an operator moves the cleaning tool in the suction port 111 and is about to tip the dust collector 100B sideways or backward, at least one of the pair of legs 180 is the lower surface of the cleaning tool in the suction port 111. It is possible to prevent the dust collector 100B from tipping over.

As shown in FIG. 9A, the leg 180 has an arcuately curved top surface on a virtual vertical plane parallel to the front wall 131. Therefore, when the operator moves the cleaning tool sideways in the suction port 111, the cleaning tool can move smoothly on the leg 180 without being caught by the leg 180.

As shown in FIG. 9B, the leg 180 becomes thinner toward the front. Therefore, when the operator pushes the cleaning tool backward into the suction port 111, the legs 180 are less likely to be caught by the cleaning tool. Therefore, the operator can arrange the cleaning tool at the suction port 111 without being hindered by the leg 180.

<Fourth Embodiment>
FIG. 10 is a schematic perspective view of the dust collector 100C of the fourth embodiment. The dust collector 100C will be described with reference to FIGS. 1, 9A and 10.

Unlike the dust collector 100 of the first embodiment (see FIG. 1), the suction port 111C of the dust collector 100C does not have a notched region opened to the side. That is, the left front wall 132C and the right front wall 133C of the dust collector 100C have a rectangular shape, and their lower edges are in total contact with the floor surface FLR. Therefore, the dust collector 100C can have the same stability as the dust collector 100B (see FIG. 9A) of the third embodiment.

Although the suction port 111C of the dust collector 100C is not open to the side, it is wide in the height direction, so that the operator can insert the cleaning tool into the suction port 111C. The dust collector 100C may be exclusively used for removing dust from a narrow cleaning tool, or may be formed wide so that an operator can insert a wide cleaning tool into the suction port 111C.

The shape of the upstream end of the guide pipe portion 123C (lower pipe portion 210C) is designed to match the shape of the suction port 111C. The parts other than the lower pipe portion 210C, the left front wall 132C, and the right front wall 133C are the same as the dust collector 100 of the first embodiment. Therefore, the description of the first embodiment is applied to parts other than the lower pipe portion 210C, the left front wall 132C, and the right front wall 133C.

With respect to the above-described embodiment, the suction port forming portion 110 is integrally formed with the guide pipe portion 123. However, the suction port forming portion is a rear curved edge so as to form a lower edge of the front wall 131 and a lower portion of the front edge of the left front wall 132 and the right front wall 133 (ie, a laterally open notch region). Part) may be.

Regarding the above-described embodiment, the dust collectors 100, 100A, 100B, and 100C are designed so that the attachment pipe 150 can be attached. However, the dust collector may be designed so that the attachment tube 150 cannot be attached.

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

100, 100A, 100B, 100C ・ ・ ・ ・ ・ Dust collector 110 ・ ・ ・ ・ ・ ・ ・ ・ ・ Suction port forming part 111, 111C ・ ・ ・ ・ ・ ・ ・ ・····························································································································· Notch edge 120 ・ ・ ・ ・ ・ ・ ・ ・ Dust collection mechanism 122 ・ ・ ・ ・ ・ ・ ・ ・・ Storage unit 123, 123C ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・···········································································································
133, 133C ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Right front wall (side wall)
138 ···························································································································· ····························································································································· ·········································································································································・ ・ ・ ・ ・ ・ Inner opening FLR ・ ・ ・ ・ ・ ・ ・ ・ ・ Floor surface

Claims (10)

A suction port forming part that forms a suction port for sucking dust adhering to the cleaning tool,
A dust collecting mechanism that applies a suction force for sucking the dust to the suction port and collects the dust sucked from the suction port.
A housing in which the dust collecting mechanism is housed , and
The suction port forming portion has a lateral extension edge extending laterally at a position separated from the floor surface by a predetermined height, and a lateral extension edge that is bent rearward from the end portion of the side extension edge to form the floor surface and the side extension edge. Includes a pair of notched edges, each forming a notched region recessed rearward from the end of the opening region formed between
The contour of the suction port is formed by the lateral extending edge and the pair of notched edges .
The dust collecting mechanism includes a storage portion for storing the dust sucked through the suction port and a guide pipe portion for guiding the dust from the suction port to the storage portion.
The housing has a front wall having a lower edge to which the lateral extension is attached and a pair of side walls each having an attachment edge to which the pair of notched edges are attached.
The side extending edge and the pair of notched edges are a dust collector integrally formed with the guide pipe portion. The dust collector according to claim 1, wherein the predetermined height is a value in a range of 20 mm or more and 100 mm or less from the floor surface. An elastic scraping portion formed so as to scrape the dust from the cleaning tool is further provided.
The dust collector according to claim 1 or 2, wherein the elastic scraping portion is arranged along at least a part of the lateral extending edge and the pair of notched edges. The dust collector according to any one of claims 1 to 3, further comprising a leg portion that protrudes forward from the housing along the floor surface in the suction port. The dust collector according to claim 4 , wherein the legs become thinner toward the front. The dust collector according to claim 4 or 5 , wherein the legs have an arc-shaped curved upper surface. An attachment tube formed so as to be connectable to the guide tube portion via the housing,
An outer opening formed in the housing so that the attachment pipe can be inserted, and an inner opening formed in the guide pipe portion so as to connect the attachment pipe inserted into the outer opening. With a lid to close,
The dust collector according to any one of claims 1 to 6 , wherein the lid portion is removable from the housing and the guide pipe portion. A housing that forms a suction port for sucking dust adhering to the cleaning tool,
A dust collecting mechanism having a storage unit that collects the dust sucked from the suction port in the housing, and a guide tube portion that guides the dust from the suction port to the storage unit.
An attachment pipe formed so as to be connectable to the guide pipe portion,
An outer opening formed in the housing so as to connect the attachment pipe, and an inner opening formed in the guide pipe portion so as to connect the attachment pipe inserted into the outer opening. With a lid to close,
The lid portion can be removed from the housing and the guide tube portion.
The guide tube portion, said a first section which extends rearwardly along said suction port or al floor, and a second section extending upwardly bent from the first section, the dust is bent from said second zone Including the third section that guides to the storage section
The lid includes a closure that closes the inner opening formed at the flexion site between the second section and the third section.
The closed portion is formed so that the boundary between the closed portion and the guide pipe portion forming the bent portion is an obtuse angle on a virtual vertical plane extending rearward from the front wall of the housing. that have a cross-section
Dust collector. A housing that forms a suction port for sucking dust adhering to the cleaning tool,
A dust collecting mechanism having a storage unit that collects the dust sucked from the suction port in the housing, and a guide tube portion that guides the dust from the suction port to the storage unit.
An attachment pipe formed so as to be connectable to the guide pipe portion,
An outer opening formed in the housing so as to connect the attachment pipe, and an inner opening formed in the guide pipe portion so as to connect the attachment pipe inserted into the outer opening. With a lid to close,
The lid portion can be removed from the housing and the guide tube portion.
The guide tube portion, said a first section which extends rearwardly along said suction port or al floor, and a second section extending upwardly bent from the first section, the dust is bent from said second zone Including the third section that guides to the storage section
The lid includes a closure that closes the inner opening formed at the flexion site between the second section and the third section.
The closing part, that have a cross section which forms said at virtual vertical plane extending rearwardly from the front wall of the housing, the arcuate curved profile towards the third section from the second section
Dust collector. The dust collector according to claim 8 or 9 , wherein a flow path narrowing toward the rear is formed in the first section.

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