JP2011016011A - Suction tool for vacuum cleaner - Google Patents

Abstract

In the vacuum cleaner suction tool 10 having the rotating brush 20, there is a problem that it is desired to prevent tangling of long garbage such as hair, pet hair loss, and lint to the rotating brush.
A rotating brush is provided with a wing cloth. When the wing cloth 25 faces the suction opening 16, the wing cloth 25 is in contact with the surface to be cleaned 400 and is curved backward in the rotation direction of the rotary shaft 21, and moves away from the surface to be cleaned 400 into the housing chamber 15. At this time, it extends to rise from the circumferential surface of the rotating shaft 21. When the wing cloth 25 extends, the adhering long dust H is blown away in a direction away from the circumferential surface of the rotating shaft 21.
[Effect] Before the long dust H is entangled with the rotating brush 20, the long dust H is blown outward by the wing cloth 25, so that the long dust H can be prevented from being entangled.
[Selection] Figure 2

Description

  The present invention relates to a vacuum cleaner suction tool, and more particularly to a suction tool that is used by being mounted on a vacuum cleaner body and sucks dust on a surface to be cleaned and sends it to the vacuum cleaner body side.

  A vacuum cleaner generally has a main body provided with an electric blower, a rear end attached to the main body, a suction hose provided with an operation part at the front end, and a rear end connected to the operation part of the suction hose. The tip end side has a suction pipe to which a suction tool is connected. The user performs cleaning by grasping a grip provided in the operation unit and moving the suction tool back and forth along the surface to be cleaned.

  The conventional suction tool has a shape that is connected to the suction pipe in a so-called T shape so that dust on the surface to be cleaned can be efficiently sucked when it is moved back and forth. Moreover, the rotary brush is accommodated in the suction tool, and when the rotary brush rotates, an action such as scraping up dust on the surface to be cleaned is performed, and the cleaning efficiency is improved.

  Among the conventional suction tools, those that are of interest to the present invention include the suction tool described in Patent Document 1 and the suction tool described in Patent Document 2.

  The rotary brush 115 of the suction tool described in Patent Document 1 is provided with a blade 1501 formed of an elastic material such as rubber or soft vinyl chloride. Since the blade 1501 has flexibility, when the rotating brush 115 rotates, the blade 1501 receives centrifugal force due to the rotation, and the sliding contact portion 1506 of the blade 1501 rises in the radial direction of the rotary core 3 and slides on the cleaning surface. There is an effect that dust can be scraped (see paragraphs [0065] [0068] and 15 of Patent Document 1).

The suction tool described in Patent Document 2 also has a rotating brush 8. The rotating brush 8 has a pair of brush bodies 12 that do not contact the floor surface and a pair of blades 13 that have the flexibility to stand by the centrifugal force of the rotating brush and contact the floor surface (see summary). When the rotary brush 8 is stopped, the brush body 12 and the blade 13 are formed so as not to contact the floor surface. However, when the rotary brush 8 rotates at a high speed, the blade 13 stands up by centrifugal force, It plays the function of touching the tatami and cleaning the floor and tatami mats (see paragraphs [0015] and [0021]).
JP-A-9-187405 JP-A-11-123167

  In a vacuum cleaner suction tool having a rotating brush, conventionally, long dust such as hair, pet hair loss, and lint (hereinafter referred to as “long garbage”) is entangled, and the rotating brush. There was a problem that it was difficult to remove.

  By the way, since the suction tool of patent document 1 is equipped with the braid | blade which has flexibility in a rotating brush, when a braid | blade stands | starts up by the centrifugal force by rotation, it can prevent the tangle of a long garbage with respect to a rotating brush. As a result of verification by the inventors of the present application, it was found that the configuration described in Patent Document 1 cannot achieve the prevention of tangling of long garbage to the rotating brush. Further, the blade described in Patent Document 1 is formed of an elastic material such as rubber or soft vinyl chloride. When the surface to be cleaned is a carpet, when the surface to be cleaned is flooring or the like, When rotating, there is a disadvantage that the blade hits the surface to be cleaned and damages the surface to be cleaned.

  The rotating brush described in Patent Document 2 also has a blade that stands by centrifugal force. The blade does not contact the floor surface when the rotating brush is in a stopped state, and the blade rises when the rotating brush rotates, and contacts the floor surface or the tatami mat. However, it has been found that even the blade described in Patent Document 2 cannot prevent tangling of long garbage with the rotating brush.

  The present invention was made based on such a background, and provides a vacuum cleaner suction tool that can prevent long dust from being tangled with the rotary brush in the vacuum cleaner suction tool having the rotary brush. The main purpose.

  The present invention also provides a vacuum cleaner suction that functions so that the long waste is not entangled with the rotating brush and sucked into the main body of the vacuum cleaner when sucking in the long waste scattered on the surface to be cleaned. The other purpose is to provide ingredients.

  Furthermore, this invention has another object to provide a vacuum cleaner suction tool that can efficiently scrape and suck dust including long waste regardless of the type of surface to be cleaned. To do.

  A suction device for a vacuum cleaner comprising: a storage chamber having a suction opening facing a surface to be cleaned; and a rotating brush which is stored in the storage chamber and is disposed so as to face the opening. The rotating brush includes a rotating shaft extending in the width direction of the storage chamber, and a brush and a wing cloth planted on a peripheral surface of the rotating shaft, and the wing cross is formed from the rotating shaft peripheral surface. This is a strip-shaped member that is larger than the projecting dimension of the brush, is flexible, and extends in the axial direction of the rotating shaft, and in the state facing the opening, in contact with the surface to be cleaned and in the rotational direction rearward of the rotating shaft When moving away from the surface to be cleaned and moving into the housing chamber, the wing cross has a length extending so as to rise from the circumferential surface of the rotating shaft by centrifugal force due to rotation of the rotating shaft. In the middle of the direction Out dimension, characterized in that the cutout recess so as to be shorter than the portion other than the center portion is formed, an electric vacuum cleaner suction tool.

  According to a second aspect of the present invention, the brush is planted so as to be paired with a peripheral surface that faces 180 ° around the axis of the rotation axis, and the wing cross is centered on the axis of the rotation axis. Make a pair on the peripheral surface that is 180 ° opposite to the brush planting position, where the protruding edge of the wing cross does not overlap the brush when the wing cross is curved. The vacuum cleaner suction tool according to claim 1, wherein the vacuum cleaner suction tool is planted on the vacuum cleaner.

  According to a third aspect of the present invention, when viewed in a cross-sectional direction perpendicular to the rotation axis of the rotary brush, the distance from the peripheral surface of the rotation shaft to the inner wall of the storage chamber is not constant, and the trailing edge of the suction opening is The distance to the rear lower inner wall to be partitioned, and the distance to the front upper inner wall that defines an angular position that is separated from the rear lower inner wall by about 180 ° about the axis of the rotation axis, is the longest, 3. The vacuum cleaner suction tool according to claim 2, wherein the wing cloth extends so as to rise from the circumferential surface of the rotating shaft when facing the rear lower inner wall and the front upper inner wall.

  According to a fourth aspect of the present invention, the distance from the peripheral surface of the rotating shaft to the inner wall of the storage chamber is the distance to the front lower inner wall that defines the front edge of the suction opening, and the front lower inner wall. On the other hand, the distance to the rear upper inner wall that defines an angular position separated by about 180 ° around the axis of the rotating shaft is also increased, and the wing cross extends four degrees during one rotation of the rotating shaft. The vacuum cleaner suction tool according to claim 3, wherein the suction tool is a vacuum cleaner.

  According to a fifth aspect of the present invention, the brush includes a spiral brush row that extends in the axial direction of the rotation shaft and is twisted so as to rotate by a predetermined angle in the circumferential direction, and the wing cloth has a periphery of the rotation shaft. The vacuum cleaner suction tool according to any one of claims 1 to 4, wherein the suction tool is planted on a surface in a spiral shape in parallel with the brush row.

  According to a sixth aspect of the present invention, when the wing cross extends so as to rise from the peripheral surface of the rotating shaft at an angular position opposed to the rear lower inner wall that defines the rear edge of the suction opening, the rear lower inner wall The suction tool for a vacuum cleaner according to any one of claims 1 to 5, wherein the suction tool has a projecting dimension in contact with or close to the suction tool.

  In the first aspect of the present invention, the rotating brush is provided with a wing cloth. When the wing cloth faces the opening, the wing cloth is in contact with the surface to be cleaned and is curved backward in the rotation direction of the rotation shaft. It grows up like standing up. When the wing cloth extends, the long waste adhering to the brush and the wing cloth is blown away in a direction away from the circumferential surface of the rotating shaft. For this reason, long trash scraped up by the rotating brush is blown outward by the wing cloth before being entangled with the rotating brush, and is sucked into the main body of the vacuum cleaner through the suction hole communicating with the storage chamber of the suction tool. Is done.

  The wing cross keeps changing its shape between the curved state and the extended state with respect to the peripheral surface of the rotating shaft, thereby preventing the long dust from adhering to the rotating shaft and separating the long dust from the rotating shaft. The inventor has verified that it has the effect of skipping. The wing cloth of the present invention is made of a flexible or supple material so that the shape changes between a curved state and an extended state, so that it is possible to reliably entangle the long dust on the rotating shaft. Can be prevented.

  In addition, when the rotation of the rotating brush is temporarily stopped, but the suction operation of the vacuum cleaner is continued, even if the rotating brush stops at a position where the wing cross faces the suction port, the wing cross Since the notch recess is formed in the central part in the length direction so that the protruding dimension is shorter than the part other than the central part, the central part in the axial direction of the wing cross enters the suction port by the suction force, and the suction It is possible to prevent the wing cross from flapping by force and causing abnormal noise.

  Even if a notch recess is formed in the axial center of the wing cross and the projection dimension of the wing cross in the axial central portion is shortened, the axial central portion faces the suction port, and the suction force is Because it is strong, long garbage is sucked into the suction port without being entangled with the rotating shaft. For this reason, there is no problem even if the notch recess is formed.

  According to the second aspect of the present invention, when the rotary brush is viewed in the cross-sectional direction, the brush is planted so as to be paired with a circumferential surface that faces 180 ° around the axis of the rotary shaft. A pair of wing crosses that are opposed to each other by 180 ° are planted at an angular position different from the standing position. And the wing cross is provided in the angular position which does not overlap with a brush, when curving. For this reason, the wing cloth does not prevent the dust from being scraped up by the brush. Further, the wing cloth performs a cleaning function of “wiping” the surface to be cleaned in a curved state. Subsequently, a function is carried out in which the adhering long trash is blown outward by extending. Since the wing cloths that perform such functions are provided at positions that face each other by 180 ° centering on the axis of the rotation shaft, even if long dust is entangled with the rotation shaft, the rotation shafts face each other. At the angular position, the long dust is blown outward, and the long dust is more reliably prevented from being entangled with the rotating shaft.

  In the invention of claim 3, the distance from the circumferential surface of the rotation shaft to the inner wall of the housing is devised, and the wing cross extends at a position facing the rear lower inner wall, and also extends at a position rotated 180 ° from the position. Has been. For this reason, the long garbage scraped up by the rotating brush is blown away in the direction away from the rotating shaft at the rear lower part and the upper part of the front part, and is sucked toward the main body of the vacuum cleaner without being entangled with the rotating shaft. In particular, when the long garbage is blown away from the rotation shaft at a position 180 ° away from the rotation shaft, the long garbage is smoothly sucked into the suction port.

  In the invention according to claim 4, since the wing cross rises by 4 degrees during one rotation of the rotation shaft and curves by 4 degrees, the long trash on the circumferential surface of the rotation shaft is caused by frequent rising and bending of the wing cloth. It can prevent entanglement more reliably.

  According to invention of Claim 5, the brush row | line is planted helically with respect to the rotating shaft, and the wing cross is similarly planted helically. For this reason, a brush row | line contacts a to-be-cleaned surface in order toward the other end from the one end of a rotating shaft, contact resistance does not become large, and it can scrape up dust favorably with a brush. In addition, the wing cloth also comes into contact with the surface to be cleaned from one end side to the other end side of the rotating shaft, and then bends and extends after bending. Therefore, when viewed from the suction opening side, the wing cloth appears to pulsate like a wave. Repeat the bending and stretching. As a result, long dust is blown outward from the circumferential surface of the rotating shaft, and the long dust is sucked from the suction port without being entangled with the rotating shaft. In addition, instead of the name “wing cross”, it is wavy and may be called “wave cross”.

  According to the sixth aspect of the present invention, since the protruding dimension of the wing cloth is set to a dimension that is in contact with or close to the rear lower inner wall at an angular position opposed to the rear lower inner wall, the wing cloth is separated from the rear lower inner wall. When rotated to the opposite angular position, the wing cloth can extend from the circumferential surface of the rotating shaft, and no noise or the like is generated due to the collision between the protruding edge of the wing cloth and the rear lower inner wall. .

  According to the present invention, by providing the rotating brush with the wing cloth, it is possible to prevent the long dust from being entangled with the rotating shaft due to the bending and extending action of the wing cloth. Accordingly, it is possible to provide a vacuum cleaner suction tool that can be used comfortably for a long period of time without causing long garbage to become entangled with the rotating brush. Moreover, the vacuum cleaner suction tool with good cleaning efficiency can be provided.

It is a right view of the vacuum cleaner containing the vacuum cleaner suction tool 10 which concerns on one Embodiment of this invention. 2 is a right side cross-sectional view of the suction tool 10. FIG. 2 is a bottom view of the suction tool 10. FIG. It is the figure which took out and drew only the rotating brush. 3 is an exploded perspective view for explaining an assembly structure of a rotating shaft 21 and a wing cloth 25. FIG. It is a figure which shows the wing cloth 25 before shaping | molding, and the wing cloth 25 after shaping | molding. It is a figure which shows the other shape of the raising cloth 29 which comprises the wing cloth 25. FIG. It is a figure for demonstrating the attachment state of the wing cross. It is a figure for demonstrating the other attachment state of the wing cross. 3 is a right side cross-sectional view showing an example of a stopped state of the rotary brush 20 in the suction tool 10. FIG. It is the figure which looked at the rotary brush 20 in the cross section orthogonal to the axial direction. FIG. 4 is a right side cross-sectional view of the suction tool 10 for explaining a protruding dimension of the wing cloth 25. It is a right side cross-sectional view showing a modification of the suction tool 10. It is the front view and side view which show other embodiment of the wing cloth 25. It is a figure for demonstrating the change and effect | action of the loop-shaped wing cross. It is a front view of a wheel. It is a longitudinal cross-sectional view of a wheel. It is a perspective view of the main body 201 in the vacuum cleaner 200 which concerns on one Embodiment of this invention. It is a perspective view in the state where cover 6 was removed from electric vacuum cleaner main part 201. It is a perspective view of dust collecting container 50, and the lower left diagonal in the figure is the front of dust collecting container 50. FIG. 4 is an exploded perspective view of the dust collection container 50 and is a diagram for explaining the flow of air in the dust collection container 50. It is a figure for demonstrating the flow of the air and dust in the dust container 50, It is the perspective view which looked at the dust container 50 from the back side, and is a figure of the state by which the filter apparatus 53 was opened. In the dust collection space 66, it is a figure which shows the structure by which the dust D was compressed with the attraction | suction force (flow of air), and the increase in the amount of dust collection was aimed at. It is the perspective view which looked at the inner case 52 from the back side. It is a perspective view which shows the other structure of the dust collecting container 50, and is a figure of the state which looked at the dust collecting container 50 from the back side, and the filter apparatus 53 was opened.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a right side view of a vacuum cleaner 200 including a vacuum cleaner suction tool 10 according to an embodiment of the present invention.

  Hereinafter, for convenience of explanation, in FIG. 1, the left side is the front, the right side is the rear, the near side is the left, the back side is the right, and when explaining each component of the vacuum cleaner 200 and the suction tool 10, According to the direction, the description will be made while distinguishing front and rear, left and right, and top and bottom.

  The vacuum cleaner 200 includes a vacuum cleaner body 201, a suction hose 202, an operation unit 203, a suction pipe 204, and the suction tool 10 according to an embodiment of the present invention.

  The electric vacuum cleaner main body 201 incorporates an electric blower (not shown), and the electric blower generates a suction force. A connecting portion 210 provided on the rear end side of the suction hose 202 is detachably connected to the front side of the electric vacuum cleaner main body 201. The suction hose 202 is flexible and can be bent into any shape. An operation unit 203 is attached to the opposite side (tip side) of the suction hose 202. The operation portion 203 includes a pipe portion 206 extending in the axial direction of the suction hose 202, a grip 207 extending from the pipe portion 206 to the rear side in the direction crossing the axial direction, and a side opposite to the grip 207 with respect to the center of the pipe portion 206. And a sub-grip 208 provided on the side separated by 180 °. Further, a rotation mechanism 209 is interposed between the distal end side of the suction hose 202 and the operation unit 203, and the operation unit 203 and the suction hose 202 are connected to each other so as to be rotatable around an axis.

  The suction pipe 204 is a longitudinal, for example, resin-made pipe that connects the operation unit 203 and the suction tool 10. The suction pipe 204 has a front end side (side to which the suction tool 10 is attached) 211 is coaxially arranged in a rear end side (side to which the operation unit 203 is connected) 212 with a central portion in the length direction as a boundary. It is housed and configured to be variable in length. The length can be varied by operating a lock button 213 provided at the center of the suction pipe 204.

  The suction tool 10 includes a housing 11, a connection cylinder 12, and a coupling mechanism 13 that attaches the connection cylinder 12 to the housing 11.

  The rear end side 212 of the suction pipe 204 can be detached from the operation unit 203, and the operation unit 203 can be directly coupled to the connection cylinder 12 of the suction tool 10.

  In FIG. 1, reference numeral 400 denotes a floor surface as a surface to be cleaned.

  2A and 2B show right side cross-sectional views of the suction tool 10.

  The suction tool 10 includes the housing 11, the connecting cylinder 12, and the coupling mechanism 13 as described above. A shutter 14 that can be opened and closed is provided in front of the housing 11. A housing chamber 15 is defined by the housing 11 and the shutter 14. The storage chamber 15 has a suction opening 16 that faces the surface to be cleaned 400 in a cleanable state where the suction tool 10 is disposed on the surface 400 to be cleaned. A rotating brush 20 is accommodated in the storage chamber 15 so as to face the suction opening 16.

  The rotating brush 20 rotates counterclockwise in FIGS. 2A and 2B and scrapes dust on the surface to be cleaned 400 into the storage chamber 15. A suction port 17 communicates with the rear of the storage chamber 15, and the dust scraped up by the rotating brush 20 passes through the suction port 17 and passes through the connection tube 12 to be the electric vacuum cleaner main body 201 (see FIG. 1). It is sucked into.

  The rotating brush 20 includes a rotating shaft 21 extending in the width direction of the receiving chamber 15, that is, the left-right direction of the housing 11, a brush 22 planted on the peripheral surface of the rotating shaft 21, and the rotating shaft 21. And a wing cloth 25 planted on the peripheral surface.

  The brush 22 is provided with two types, a first brush 23 having a relatively wide protrusion tip (a circumferential width of the rotating shaft 21) and a second brush 24 having a relatively narrow width. It is planted so as to make a pair at symmetrical positions separated by 180 ° with respect to the rotation center of 21.

  The wing cloth 25 is also planted so as to form a pair at a position 180 degrees apart from the rotation center of the rotation shaft 21.

  The wing cloth 25 is made of a flexible material, for example, a raised cloth with one side raised. The wing cloth 25 has a protruding dimension from the circumferential surface of the rotating shaft 21 larger than the protruding dimension of the brush 22. When the wing cloth 25 faces the suction opening 16, the wing cloth 25 is in contact with the surface to be cleaned 400 and is bent backward in the rotation direction of the rotating shaft 21 (see FIG. 2A). At this time, it is preferable that the surface of the wing cloth 25 that contacts the surface to be cleaned 400 is raised because the wing cloth 25 softly wipes the surface to be cleaned 400.

  On the other hand, when the rotating shaft 21 rotates and the wing cloth 25 moves away from the surface to be cleaned 400 and moves inward of the storage chamber 15, the wing cloth 25 is rotated by the centrifugal force generated by the rotation of the rotating shaft 21. It extends to rise from the peripheral surface (see FIG. 2B).

  As the wing cloth 25 changes between the curved state and the extended state as described above, hair, pet hair, lint, and other long dust scattered on the surface to be cleaned 400 are entangled with the rotating brush 20. Can be prevented.

  In FIGS. 2A and 2B, long dust is schematically represented by a thick line H. FIG. 2A shows a state in which the long garbage H adheres to the wing cloth 25 and the brush 22 that are curved to face the surface to be cleaned 400. In this state, as shown in FIG. 2B, when the wing cloth 25 extends so as to rise from the circumferential surface of the rotating shaft 21, the long trash H is blown away from the rotating shaft 21 by the extending wing cloth 25, and the suction port 17. Is sucked in by the suction force generated.

  One of the features of this embodiment is that the long dust H is prevented from being entangled with the rotating brush 22 by changing the wing cloth 25 between the curved state and the extended state as described above. It is.

  FIG. 3 is a bottom view of the suction tool 10. In FIG. 3, the connection cylinder 12 is inclined with respect to the housing 11 by the coupling mechanism 13.

  When the suction tool 10 is viewed from the bottom side, a suction opening 16 defined by the housing 11 and the shutter 14 appears. The suction opening 16 has a rectangular shape that is long in the width direction of the housing 11, that is, in the left-right direction of the housing 11 and is horizontally long in a bottom view. A rotating brush 20 is provided so as to face the suction opening 16. The rotary brush 20 has a longitudinal shape extending in the left-right direction, and both ends thereof are rotatably supported by support members (not shown). In this embodiment, a driving force is applied to the right side of the rotating brush 20. The driving force is generated by a motor (not shown) built in the housing 11, and the rotating brush 20 is rotated by the driving force of the motor.

  In this embodiment, a configuration in which the rotary brush 20 is rotated by a motor will be described as an example. However, the present invention can also be applied to a configuration in which the rotary brush is rotated by a suction force (wind force) generated during suction. .

  FIG. 4 is a diagram in which only the rotating brush 20 is taken out and drawn. FIG. 5 is an exploded perspective view for explaining an assembly structure of the rotating shaft 21 and the wing cloth 25.

  As shown in FIG. 4, the brush 22 and the wing cloth 25 are each planted in a spiral shape with respect to the rotation shaft 21. More specifically, the brush 22 extends in the axial direction of the rotary shaft 21 and is a spiral first brush row 23 and second brush row 24 that are twisted so as to rotate a predetermined angle in the circumferential direction of the rotary shaft 21. including. Further, the wing cloth 25 is planted on the peripheral surface of the rotating shaft 21 in a spiral shape in parallel with the brush rows 23 and 24.

  As shown in FIG. 5, the rotating shaft 21 has an attachment groove 26 for attaching the first brush row 23, an attachment groove 27 for attaching the second brush row 24, and a wing cross 25 on the peripheral surface thereof. Mounting grooves 28 for mounting are provided so as to form a pair at positions spaced apart from the rotation center of the rotating shaft 21 by 180 °. These mounting grooves 26, 27, and 28 are spiral grooves that extend in the axial direction of the rotating shaft 21 and are twisted so as to rotate a predetermined angle in the circumferential direction. At the time of assembly, the root portion of the wing cross 25 is inserted into the mounting groove 28 of the rotary shaft 21 from one end of the rotary shaft 21, and the wing cross 25 is slid in the groove 28 in the axial direction of the rotary shaft 21. Thus, the wing cloth 25 is attached to the rotating shaft 21. The first brush row 23 and the second brush row 24 are attached in the same manner.

  6A and 6B are views showing the wing cloth 25 before molding and the wing cloth 25 after molding, respectively. As described above, the wing cloth 25 is made of a flexible cloth-like member, and is made of, for example, a raised cloth having a raised surface facing the surface to be cleaned 400 in FIG. 2A. As shown in FIG. 6A, the raised cloth 29 constituting the wing cloth 25 is a band-like member extending in the axial direction of the rotating shaft 21, and its protruding dimension is made larger than the protruding dimension of the brush 22 (see FIG. 2B). Yes. As shown in FIG. 6B, the rubber blade 30 is fixed to the lower side (root part) of the band-shaped raised cloth 29. The lower side of the raised fabric 29 and the rubber plate 30 are combined by insert molding. When the rubber blade 30 is fixed to the lower side of the raised cloth 29, the axial length of the rubber blade 30 is reduced due to the shrinkage when the rubber blade 30 is solidified, and the raised cloth 29 is slackened. In other words, as shown in FIG. 6B, in the wing cross 25 in which the rubber blade 30 is fixed to the lower side of the belt-like raised cloth 29, the length of the lower side of the raised cloth 29 (the length of the rubber blade 30); Comparing the length of the upper side of the raised fabric 29 in the left-right direction, the relationship is (the former) <(the latter). In such a relationship, when the wing cloth 25 is attached to the rotary shaft 21, the attachment locus of the attachment portion base (rubber blade 30) of the wing cloth 25 attached in a spiral shape and the wing cloth 29. The difference in length generated between the front end side and the spiral locus is absorbed, and there is an advantage that the wing cloth 25 is attached in a state of rising from the peripheral surface of the rotating shaft 21 as shown in FIG.

  In this embodiment, not only the contraction of the rubber blade 30 but also the shape of the raised cloth 29 is made as shown in FIG. 7, and the horizontal length on the upper side of the wing cloth 25 and the left and right sides on the lower side (rubber blade 30). The direction length is set so that (the former)> (the latter).

  Note that the shape of the wing cloth 25 is changed to that described above, and in the state where the rubber blade 30 is fixed to the lower side of the raised cloth 29 by insert molding, the length of the rubber blade 30 in the left-right direction and the raised cloth 29 The length of the upper side in the horizontal direction may be equal. In this case, when the wing cloth 25 is attached to the rotating shaft 21, the attachment locus of the attachment portion root (rubber blade 30) of the wing cloth 25 and the spiral locus of the tip side of the wing cloth 25 are determined by the helical attachment locus. A difference in length is generated between them, and as shown in FIG. 9, the wing cloth 25 is wound so as to bend toward the rotating shaft 21. Therefore, the wing cloth 25 attached to the rotating brush 20 can be prevented from protruding outward from the suction opening 16 when the rotating brush 20 is not rotating.

  As described above, the shape of the wing cloth 25 may be an inverted trapezoidal shape having a lower lower side than the upper side, or may be a rectangular shape.

  Furthermore, as shown in FIGS. 3 to 7, the protruding dimension of the wing cross 25 is shorter than the portion other than the central portion in the central portion in the length direction (the central portion in the axial direction of the rotating shaft 21). Thus, a notch recess 35 is formed at the protruding tip side. The reason why the notch recess 35 is formed is as follows.

  When the rotation of the rotary brush 20 is stopped in the state shown in FIG. 10 but the suction of the main body of the vacuum cleaner is continued, the central portion in the axial direction of the wing cloth 25 enters the suction port 17 and sucks. It has been experimentally confirmed that an abnormal noise such as a chatter noise is generated in the wing cloth 25 due to the force, or a wind noise during suction is generated.

  Therefore, in this embodiment, a notch recess 35 is provided in the axial center of the wing cloth 25 to shorten the protruding dimension of the axial center. Even if the projecting dimension of the axial center portion of the wing cloth 25 is shortened, the axial center portion of the wing cloth 25 faces the suction port 17, and the long dust adhering to this portion is absorbed by the suction port 17. Inhaled by strong suction.

  FIG. 11 is a view of the rotating brush 20 as seen in a cross section orthogonal to the axial direction, showing the arrangement relationship between the brush 22 and the wing cloth 25 on the rotating shaft 21 and the length of the wing cloth 25. Yes.

  On the rotating brush 20, wing crosses 25 are planted on the peripheral surface of the rotating shaft 21, for example, at angular positions of 0 ° and 180 °, respectively. Moreover, the 1st brush row | line | column 23 is respectively planted in the angular position of 45 degrees and 135 degrees. Furthermore, the 2nd brush row | line | column 24 is respectively planted in the angular position of 90 degrees and 270 degrees. And even if the wing cross 25 planted at the angular positions of 0 ° and 180 ° is curved toward the second brush row 24, the protruding edge of the wing cross 25 does not overlap the second brush row 24. Has been. In other words, the planting position of the wing cloth 25 and the planting position of the second brush row 24 adjacent to the side on which the wing cloth 25 is curved are separated by a predetermined angle, and the curved wing cloth 25 is adjacent. The second brush row 24 is not overlapped.

  By arranging the wing cross 25 and the brushes (the first brush row 23 and the second brush row 24) 22 as described above, even if the wing cross 25 is curved, the first brush row 23 and the second brush row 25 are curved. The dust dusting action of the brush row 24 is not impaired.

  Referring to FIG. 12, the protruding dimension of the wing cloth 25 is set to a length that rubs the inner wall of the storage chamber 15. The wing cloth 25 is extended by 4 degrees while the rotation shaft 21 makes one rotation.

  Therefore, the distance between the peripheral surface of the rotating shaft 21 of the rotating brush 20 and the inner wall of the storage chamber 15 is the distance to the rear lower inner wall 15A that defines the rear edge of the suction opening 16 and the rear lower inner wall 15A. On the other hand, the distance to the front upper inner wall 15C that defines an angular position that is 180 ° apart from the axis of the rotation shaft 21 is the longest.

  Further, the distance to the front lower inner wall 15D that defines the front edge of the suction opening 16 and the rear upper inner wall 15B that defines an angular position that is 180 ° apart from the front lower inner wall 15D about the axis of the rotation shaft 21. The distance up to is also increased as described above so that the wing cloth 25 can be extended.

  FIG. 13 is a right side cross-sectional view showing a modified example of the suction tool 10. As described above, the suction opening 16 is formed on the bottom surface of the housing 11 of the suction tool 10. A raised row 36 called a suction keeper is arranged behind the suction opening 16. For this reason, long dust that is prevented from moving backward by the suction keeper 36 may accumulate on the housing bottom surface 37 (see FIG. 3) between the suction keeper 36 and the suction opening 16.

  Therefore, by making the housing bottom surface 37 an inclined surface 38 as shown in FIG. 13, there is an effect that long dust collected in front of the suction keeper 36 is easily sucked into the suction port 17.

  The inclined surface 38 may be an inclined surface in which the rear side of the suction opening 16 is inclined upward in the housing chamber 15 from the rear to the front.

  14A and 14B are a front view and a side view showing another embodiment of the wing cloth 25, respectively. As shown in FIGS. 14A and 14B, the wing cloth 25 is a belt-like member 29 that is long in the axial direction of the rotating shaft 21, and is a cloth-like member that is curved in a loop when viewed from the side and fixed by a rubber blade 30 It is good.

  When such a wing cloth 25 is employed, as shown in FIG. 15A, while the rotating brush 20 is stopped, the wing cloth 25 is a loop-shaped wing cloth 25 with a small amount of protrusion from the peripheral surface of the rotating shaft 21. When the 20 rotates, the loop of the wing cloth 25 is squashed by the centrifugal force generated by the rotation of the rotating shaft 20, and the wing cloth 25 extends so as to rise from the peripheral surface of the rotating shaft 21. Then, the extended wing cloth 25 changes between a curved state and an extended state. Therefore, even by such a wing cross, as in the embodiment described above, when the stand on tiptoe is wing cross, in a direction away long dust to be retaining clips around the peripheral surface of the rotating brush 20 from the rotary brush 20 It is possible to prevent long dust from adhering to the rotating brush 20 by flipping it off.

  Incidentally, the suction tool 10 described in this embodiment includes, for example, three wheels 41, 41, and 42 on the bottom surface of the housing 11 as shown in FIG. 3. The wheel 41 is provided so that the rear lower part of the housing 11 of the suction tool 10 moves smoothly on the surface to be cleaned 400 when the suction tool 10 is moved back and forth along the surface to be cleaned 400. . The wheel 42 is a wheel provided in a stop switch for stopping the rotation of the rotary brush 20 when the suction tool 10 is turned upside down.

  These three wheels 41 and 42 assist the movement of the suction tool 10 when the suction tool 10 is moved on the surface to be cleaned 400, but the long garbage that has not been sucked from the suction opening 16. However, the subject that it was easy to get involved in the rotating shaft occurred.

  Therefore, in this embodiment, the shapes of the wheels 41 and 42 are the shapes shown in FIGS. 16 and 17.

  16 is a front view of the wheels 41 and 42, and FIG. 17 is a longitudinal sectional view thereof. The wheels 41 and 42 are characterized in that grooves 44 are formed on the left and right sides of the ground contact surface 43 and that an annular recess 47 is formed between the shaft 45 and the roller 46. Long dust wound around the ground circumferential surface 43 tries to move with the rotation of the wheel 41 to a smaller direction diameters, by the grooves 44 and annular recess 47 is formed, firstly, a groove 44 Fit into. A large number of long trash is wound around the groove 44. Wraps the elongated dust in the groove 44, the groove 44 in the long dust wrapped around is full, long garbage is further wound around the installation circumferential surface 43, it moves to the shaft 45. However, the shaft 45, since the annular recess 47 in the roller 46 is formed, even with long dust around the axis 45, it does not act long dust with its winding as a resistance to the roller 46, annular recess 47 It is allowed to wrap long garbage until it is full. Thus, wheel 41 and 42, even with the winding is long waste, without its rotation performance is lowered, until long refuse is filled into the groove 44 and recess 47 will maintain the smooth rotation.

  In the embodiment described above, the example in which the wing cloth 25 is configured of a raised cloth with one side raised is described. However, the wing cloth 25 is not limited to a raised cloth, and may be formed of a flexible belt-like member. For example, the wing cloth 25 may be formed of a nonwoven fabric, a synthetic fiber cloth, or other materials.

  FIG. 18 is a perspective view of the main body 201 in the electric vacuum cleaner 200 according to one embodiment of the present invention. In the vacuum cleaner main body 201 shown in FIG. 18, description will be made assuming that the lower left side is the front and the upper right side is the rear.

  The outer shape of the main body 201 is partitioned by a housing 2 made of resin, for example, and a suction hose mounting hole 3 is formed on the front surface of the housing 2. The suction hose mounting hole 3 is detachably coupled to the connecting portion 210 provided on the rear end side of the suction hose 201 described above. Also, relatively large-diameter wheels 4 are respectively provided on the left and right sides of the housing 2 near the rear. Furthermore, a handle 5 is provided on the upper surface of the housing 2 and can be raised from the folded state shown in the figure to a standing state. A cover 6 that can be opened and closed is disposed on the front side of the handle 5. The cover 6 has a fulcrum for opening and closing on the rear side, and the front side can be opened upward to expose the inside.

  FIG. 19 is a perspective view of the vacuum cleaner body 201 with the cover 6 removed. A dust collection chamber 7 communicating with the suction hose mounting hole 3 is formed in the electric vacuum cleaner main body 201 covered with the cover 6, and a dust collection container 50 is accommodated in the dust collection chamber 7. An electric blower (not shown) is incorporated behind the dust collection chamber 7.

  FIG. 20 is a perspective view of the dust collection container 50, and the diagonally lower left side in the drawing is the front surface of the dust collection container 50. FIG. 21 is an exploded perspective view of the dust collection container 50 and is a diagram for explaining the flow of air in the dust collection container 50.

  Referring to FIGS. 20 and 21, the dust collection container 50 has an outer case 51, an inner case 52, and a filter device 53.

  The outer case 51 is formed of, for example, a transparent or translucent resin, and the inside can be seen through. An intake port 54 is formed on the front surface of the outer case 51. As shown in FIG. 19, when the dust collection container 50 is accommodated in the dust collection chamber 7 of the electric vacuum cleaner main body 201, the intake port 54 communicates with the suction hose mounting hole 3 in the main body 201. Therefore, the air and dust sucked by the suction hose are taken into the outer case 51 from the suction port 54. The back side of the outer case 51 is open.

  The inner case 52 is formed of a colored resin such as yellow, red, or blue, and is fitted into the outer case 51 from the back side of the outer case 51. Since the outer case 51 is transparent or semi-transparent in the fitted state, it can be confirmed through the outer case 51 that the inner case 52 is disposed therein. When the inner case 52 is engaged with the outer case 51, the inner case 52 cooperates with the outer case 51 to mainly pass air and dust entering from the air inlet 54 of the outer case 51, and centrifugal force is applied to the dust in the air. A swirl flow path as a main flow path for imparting air, a bypass flow path for ensuring a flow of air entering from the intake port 54, and a dust collection space for collecting dust are formed.

  Therefore, as shown in FIG. 21, the inner case 52 includes a buffer space 55 that receives air entering from the air inlet 54, a swirl flow path forming portion 56 that guides the air in the buffer space 55 clockwise, and a swirl flow A semi-columnar convex portion 57 protruding forward is included inside the path forming portion 56. A large number of ventilation holes 58 are formed in the peripheral surface of the semi-columnar convex portion 57 on the downstream surface in the turning direction. As indicated by the thick arrow A1, the air and dust that have entered the buffer space 55 from the air inlet 54 flow downstream while turning clockwise along the swirl flow path forming portion 56 that is the main flow path. . That is, it turns around the convex part 57 (thick arrow A2). At that time, since a large number of ventilation holes 58 are formed in the convex portion 57, a part of the swirling air flows to the back side through the intake holes 58. As described above, the large number of ventilation holes 58 formed in the semi-columnar convex portion 57 form a bypass flow path for ensuring the flow of air entering from the intake port 54.

  The outer case 51 is provided with a handle 59 on its upper surface side. On the rear end side of the handle 59, a push button 62 and a hook 63 for locking the filter device 53 interlocked with the push button 62 in a closed state are provided.

  FIG. 22 is a view for explaining the flow of air and dust in the dust collection container 50, and is a perspective view of the dust collection container 50 as viewed from the back side, in a state in which the filter device 53 is opened. is there.

  Referring to FIG. 22, a swirl flow path 65 that is a main flow path is formed by the outer case 51 and the inner case 52, and air and dust mainly flow along the swirl flow path 65 (thick arrow A3). When viewed from the back side, a guide surface 60 that smoothly bulges into a convex curved shape that forms the downstream inner surface of the swirling channel 65 is partitioned by an inner case 52. The guide surface 60 is the back side of the inner case 52 that partitions the buffer space 55 (see FIG. 21). The guide surface 60 is located on the downstream inner side of the swirl flow path 65, smoothly guides air and dust flowing through the swirl flow path 65, and assists the swirling of air and dust.

  A dust collection space 66 is defined at the downstream end of the swirl passage 65. Since the centrifugal force is applied to the dust in the air while the air and dust pass through the swirling flow path 65, the dust D flows outside the swirling flow path 65, and is schematically shown in FIG. In addition, it accumulates mainly from the dust collection space 66.

  By the way, in FIG. 22, when the dust collection space 66 is filled with the dust D, then the dust D also overflows into the swirl flow path 65 and the guide surface 60, preventing the flow of wind flowing through the swirl flow path 65, There is a risk of reducing the suction power.

  Therefore, in this embodiment, the dust D collected in the dust collection space 66 is compressed to improve the dust collection power.

  FIG. 23 is a diagram illustrating a configuration in which dust D is compressed by suction force (air flow) in the dust collection space 66 and the amount of dust collection is increased. As shown in FIG. 23, in the dust collection space 66, the dust collection space 66 is partitioned by a comb-like wall 67 so that a small space 66A is secured on the most downstream side when viewed in the wind flow direction. ing. The air and dust swirling through the swirling flow path 65 reach the dust collection space 66, and the dust D is blocked by the comb-shaped wall 67, and the air flowing into the small space 66A is in front of the comb-shaped wall 67. It is compressed with. As a result, the total amount of dust D that can be accumulated in the dust collection space 66 increases.

  By providing the comb-like wall 67 so as to secure the small space 66A on the most downstream side of the dust collection space 66, the air flow (indicated by the thick arrow A3) flowing through the main flow path 65 where dust turns is made smooth. When the dust accumulates in the dust collection space 66, the accumulated dust is compressed, so that it is difficult for the dust to adhere to the central portion of the filter device 53 that is most sucked from the motor, and the suction capacity is not easily lowered. It can be configured.

  The above-described comb-like wall 67 is provided so as to secure a small space 66A on the most downstream side of the dust collection space 66, as shown in a perspective view of the inner case 52 in FIG. The partition wall 68 that partitions the flow path and the bypass flow path may be a comb-like wall.

  Even in such a configuration, since the air flowing through the main flow path is secured from the bypass flow path side to the filter device 53 through the partition wall 68, dust is compressed on the front side of the partition wall 68. , The dust collection capacity increases.

  FIG. 25 is a perspective view showing another configuration of the dust collecting container 50, which is a perspective view of the dust collecting container 50 as viewed from the back side, and is a view showing a state in which the filter device 53 is opened.

  The dust collecting container 50 shown in FIG. 25 is characterized in that, even in the bypass channel 69, a swirl channel is provided, and fine dust that has entered the bypass channel 69 swirls with the air. It is separated from the air and compressed and collected at the end of the bypass flow path 69, so that the flow of air flowing through the bypass flow path 69 is not hindered, and the suction capacity is not easily lowered.

  In the dust collecting container 50, when the dust D is separated from the air flowing through the swirl flow path 65 and the dust D accumulates in the dust collection space 66, the air flow A3 flowing through the swirl flow path 65 decreases, and therefore bypass. The air flow in the channel 69 increases. In that case, the problem that fine dust contained in the air flow sucked into the bypass channel 69 sticks to the entire facing surface of the filter device 53 facing the back side of the bypass channel 69 and is easily clogged. did.

  Therefore, as shown in FIG. 25, in the bypass channel 69, the air flow entering from the small vent hole 58 is swung as indicated by the thick arrow A4, so that the convex shape is substantially concentric with the semi-columnar convex portion 17. A guide wall 70 for generating a swirling flow disposed inside the portion 17 is provided. This is a feature of the dust collecting container 50. For this reason, the air and fine dust that have entered from the outside of the convex portion 57 through the small vent hole 58 are swirled as indicated by the thick arrow A4. That is, the sub swirl flow A4 is formed so as to swirl inward of the air flow A3 swirling in the swirl flow path 65.

  As a result, the air and dust flowing through the bypass channel 69 entering through the small vent hole 58 are swirled as indicated by the thick arrow A4, and the fine dust D ′ contained in the air is It accumulates from the side of the bypass channel 69 and does not prevent air from flowing from the bypass channel 69 to the filter device 53 on the back side.

  In this way, by forming a swirl flow path in the bypass flow path 69 as well, fine dust D ′ contained in the air flow flowing through the bypass flow path 69 is separated, and the dust D ′ is separated from the bypass flow path 69. Therefore, it is possible to provide the dust collection container 50 having a configuration in which the suction capacity is not easily lowered.

  The dust collecting container 50 of the electric vacuum cleaner according to the present invention may be a dust collecting container in which both the configuration described in FIG. 23 or FIG. 24 and the configuration described in FIG. 25 are adopted.

  The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims.

DESCRIPTION OF SYMBOLS 10 Suction tool 15 Accommodating chamber 16 Suction opening 17 Suction port 20 Rotating brush 21 Rotating shaft 22 Brush 23 First brush row 24 Second brush row 25 Wing cloth 29 Brushed cloth 30 Rubber blade 35 Notch recess

Claims (6)

A vacuum cleaner suction tool comprising: a storage chamber having a suction opening facing a surface to be cleaned; and a rotating brush housed in the storage chamber and arranged to face the opening,
The rotating brush includes a rotating shaft extending in the width direction of the storage chamber, and a brush and a wing cloth planted on a peripheral surface of the rotating shaft,
The wing cloth is a belt-like member having a projecting dimension from the circumferential surface of the rotating shaft larger than the projecting dimension of the brush and having flexibility, and extending in the axial direction of the rotating shaft. A structure that is curved in the rearward direction of rotation of the rotating shaft in contact with the surface, and when moving away from the surface to be cleaned and moving into the storage chamber, it extends to rise from the peripheral surface of the rotating shaft by centrifugal force due to rotation of the rotating shaft And
The suction tool for a vacuum cleaner, wherein the wing cloth has a notch recess formed at a central portion in a length direction so that a protruding dimension is shorter than a portion other than the central portion. The brush is planted so as to form a pair on a circumferential surface facing 180 ° around the axis of the rotation shaft,
The wing cloth has an angular position different from the brush planting position on the circumferential surface facing the rotation axis 180 ° centering on the axis of the rotation shaft, and when the wing cloth curves, the protruding edge of the wing cloth The suction tool for a vacuum cleaner according to claim 1, wherein the suction tool is planted so as to form a pair at a position that does not overlap the brush. When viewed in the cross-sectional direction perpendicular to the rotation axis of the rotating brush,
The distance from the circumferential surface of the rotation shaft to the inner wall of the storage chamber is not constant, and the distance from the rear lower inner wall that defines the rear edge of the suction opening, and the axis of the rotation shaft relative to the rear lower inner wall The distance to the front upper inner wall that defines an angular position separated by about 180 ° from the center is the longest,
The suction tool for a vacuum cleaner according to claim 2, wherein the wing cloth extends so as to rise from the circumferential surface of the rotating shaft when at least facing the rear lower inner wall and the front upper inner wall. Further, the distance from the peripheral surface of the rotation shaft to the inner wall of the storage chamber is the distance to the front lower inner wall that defines the front edge of the suction opening, and the axis of the rotation shaft with respect to the front lower inner wall. The distance to the rear upper inner wall that defines an angular position separated by about 180 ° from the center is also increased,
The suction tool for a vacuum cleaner according to claim 3, wherein the wing cloth extends four degrees while the rotation shaft makes one rotation. The brush includes a spiral brush row that extends in the axial direction of the rotating shaft and is twisted so as to rotate a predetermined angle in the circumferential direction;
The vacuum cleaner according to any one of claims 1 to 4, wherein the wing cloth is spirally planted on a peripheral surface of a rotating shaft in parallel with the brush row. Suction tool. When the wing cloth extends so as to rise from the peripheral surface of the rotating shaft at an angular position facing the rear lower inner wall that defines the rear edge of the suction opening, the wing cross contacts or approaches the rear lower inner wall. The vacuum cleaner suction tool according to any one of claims 1 to 5, wherein the vacuum cleaner suction tool is provided.

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