JP3830961B2 - Suction port and vacuum cleaner - Google Patents

Description

  The present invention relates to a suction port body including a suction port body having a suction chamber in which a bottom surface suction port is formed, a rotary cleaning body rotatably disposed in the suction chamber, and a vacuum cleaner including the suction port body It is about.

  A conventional vacuum cleaner is provided with a suction port body having the configuration shown in FIG. 10 (see, for example, Patent Document 1).

  The suction port body 1 includes a suction port body 4 in which a suction chamber 3 having a bottom surface suction port 2 is formed on the bottom surface 1 </ b> A, and a rotary cleaning body 5 that is rotatably disposed in the suction chamber 3. The rotary cleaning body 5 is rotated counterclockwise (in FIG. 10) by the air introduced from the air introduction port 6 provided in the suction port body 4.

  According to the suction port body 1, the dust attached to the carpet is scraped up by the rotation of the rotary cleaning body 5, so that the dust can be efficiently sucked together with air from the bottom surface suction port 2.

    Patent Document 1: JP-A-11-206635

  However, since such a suction port body 1 has a bottom wall portion 4B formed between the front edge 2a of the bottom surface suction port 2 and the front surface of the suction port body 4, it can suck dust at the wall. There was a problem that I could not.

  An object of the present invention is to provide a suction port body that can scrape dust on a wall or the like.

The invention of claim 1 includes a suction port body having a suction chamber in which a bottom surface suction port is formed;
A suction port provided with a rotary cleaning body rotatably disposed in the suction chamber and having a cleaning member;
Provided at least a part of the front wall portion of the suction port body movably back and forth,
When the front wall part retreats, the cleaning member comes into contact with the back surface of the front wall part and bends, so that the cleaning member that has been in contact is between the lower end of the front wall part and the surface to be cleaned. It protrudes to

  According to the present invention, when a part of the front wall part is retracted, the part contacts the cleaning member or the part protrudes forward from the front wall part. It can be scraped up by a member.

  Hereinafter, an example which is an embodiment of a suction mouth object concerning this invention and a vacuum cleaner provided with this suction mouth object is described based on a drawing.

  FIG. 1 shows a vacuum cleaner 20 to which a suction port 30 according to the present invention is applied. This vacuum cleaner 20 is detachably connected to a vacuum cleaner main body 21, a hose 22 having one end detachably connected to the vacuum cleaner main body 21, and a hand control tube 23 provided at the other end of the hose 22. The extended tube 24 is provided. The suction port body 30 is detachably connected to the distal end portion of the extension pipe 24.

  The operation tube 23 is provided with an operation unit 23A. The operation unit 23A is provided with an operation switch (not shown), a change button, and the like for operating the vacuum cleaner.

  The vacuum cleaner main body 21 is provided with a dust collection container 25 and an electric blower (not shown) for collecting dust in the dust collection container 25. The dust collection container 25 is detachably attached to the cleaner body 21.

  As shown in FIGS. 2 to 4, the suction port body 30 includes a suction port body 31 having a suction chamber 33 in which a bottom surface suction port 32 is formed on a bottom surface 31 </ b> A (see FIG. 3) that faces a surface to be cleaned at the time of cleaning. The rotary cleaning body 35 (see FIG. 4) rotatably arranged in the suction chamber 33 and the rear part of the suction port body 31 are attached to be rotatable around a shaft gland 34A (see FIG. 3) extending in the front-rear direction. A rotating tube 34 and a connecting tube 36 attached to the rotating tube 34 so as to be rotatable in the vertical direction are provided. In FIG. 2, V indicates a bumper attached to the suction port body 30, and Va indicates a front end surface of the bumper.

  As shown in FIG. 3, arc-shaped wall portions 31 b and 31 b are formed on the left and right sides of the bottom-surface suction port 32 on the bottom surface 31 </ b> A of the suction port body 31, and the arc-shaped wall portions 31 b and 31 b have raised hairs. Wiping members 37 and 37 are attached. Further, wiping members 38, 38 having raised hairs are attached to both sides of the rear side of the bottom wall surface 31 </ b> A, and a traveling body is constituted by these wiping members 37 to 38, and a suction port for a surface to be cleaned Y such as a floor surface. The body 30 can be moved smoothly, and dust on the surface to be cleaned is inserted into the bottom suction port 32 without particularly protruding from both sides of the suction port body 31. Can do.

  Further, a roller 39 that detects whether or not the suction port body 30 is placed on the surface to be cleaned Y is provided on one side, for example, the right side (in FIG. 3) of the bottom surface 31A of the suction port body 31. The roller 39 is disposed so as to protrude from the bottom surface 31A, and is attached to the bottom surface 31A so as to be movable in the vertical direction (perpendicular to the paper surface in FIG. 3). When the suction port body 30 is placed on the surface to be cleaned, the roller 39 is moved upward in a state where it is in contact with the surface to be cleaned. Detects being placed on the cleaning surface.

  The rotary cleaning body 35 is rotationally driven by a motor (not shown). When the roller 39 does not detect that the suction port body 30 has been placed on the surface to be cleaned, the detection means drives the motor. As a result, the rotation of the rotary cleaning body 35 is stopped.

  The rotary cleaning body 35 includes a shaft portion 35J and a plurality of cleaning members attached to the shaft portion 35J at intervals in the circumferential direction. One group of these cleaning members is the same length, while the other group has a different length than the one group. More specifically, the cleaning member includes, for example, a plurality of wiping members 35A and a plurality of brushes 35B made of cloth having raised hairs in the illustrated embodiment. The length of the wiping member 35A is set longer than the length of the brush 35B. Since the length of the wiping member 35A is set longer than the length of the brush 35B, the wiping member 35A is more easily bent than the brush 35B. Accordingly, the dust scraping force (waist) of the wiping member 35A is weaker than that of the brush 35B. The long wiping member 35A is suitable for cleaning the space between the plates and the tatami mat, so that it protrudes below the wiping members 37, 38, and the short brush 35B is suitable for cleaning the carpet, so that it is below the wiping members 37, 38. Does not protrude. In the space between the plates or in the tatami mat, the wiping member 35A comes into contact with the surface to be cleaned and scrapes out dust, and the brush 35B does not contact between the plates or the surface to be cleaned of the tatami mat. These brushes 35B mainly come into contact with the surface to be cleaned of the carpet and scrape out dust on the surface to be cleaned.

  Here, the wiping member 35A and the brush 35B are set such that the rotary cleaning body 35 rotates in the clockwise direction as viewed in FIG. When the rotary cleaning body 35 is set in this way, the wiping member 35 </ b> A and the brush 35 </ b> B can scrape dust in front of the rotary cleaning body 35 into the bottom surface suction port 32.

  As shown in FIGS. 5 and 6, the suction port main body 31 includes a main body case 40 provided on the rotary tube 34 and a lid case 41 (see FIGS. 2 and 2) that is detachably attached to the upper surface of the main body case 40. 7). The suction chamber 33 is also formed by a main body case 40 and a lid case 41. When the lid case 41 is removed from the main body case 40, the upper surface and the front surface of the suction chamber 33 are opened, so that it is possible to easily remove thread scraps entangled with the rotary cleaning body 35 and to easily remove the rotary cleaning body 35. It can be carried out.

  The main body case 40 includes a suction air passage tube portion 40A communicating the suction chamber 33 and the rotary tube 34, a motor chamber portion 40B provided on the right side of the suction air passage tube portion 40A, and a left side of the suction air passage tube portion 40A. A control chamber 40C provided in the front, a bearing chamber 40D protruding forward from one end (right end in FIG. 6) of the motor chamber 40B, and the other end (left end in FIG. 6) of the control chamber 40C. And a bearing chamber portion 40E protruding forward.

  The bearing chamber portion 40D has a front end wall portion 40Da, an inner side wall portion 40Db, and an outer side wall portion 40Dc. Similarly, the bearing chamber portion 40E has a front end wall portion 40Ea, an inner side wall portion 40Eb, and an outer side wall portion 40Ec.

  A front suction port 46 is formed on the front surface of the suction port body 31 (see FIG. 2). The front suction port 46 includes a space surrounded by the recess 42 of the lid case 41 between the front end wall portion 40Da of the bearing chamber portion 40D and the front end wall portion 40Ea of the bearing chamber portion 40E, and a cover described later that covers this space. 50. The front suction port 46 is formed continuously with the bottom suction port 32. The front suction port 46 is for sucking dust in front of the suction port body 31. The front suction port 46 will be described later in detail.

  A motor (not shown) for rotating the rotary cleaning body 35 is built in the motor chamber 40B, and a control circuit (not shown) for driving and controlling the motor is provided in the control chamber 40C.

The lid case 41 includes a suction plate pipe portion 40A, a front side 40BA of the motor chamber portion 40B, a front side 40Ca of the control chamber portion 40C, a suction chamber 33, and a top plate portion 41A that covers upper portions of the bearing chamber portions 40D and 40E. It has front wall portions 41B and 41C which are formed on both sides of the front end 41a of the top plate portion 41A and are bent downward and joined to the front end wall portions 40Da and 40Ea of the bearing chamber portions 40D and 40E. A space between the front wall portions 41 </ b> B and 41 </ b> C is formed in a concave portion 42 provided on the front surface of the lid case 41.
The recess 42 has a predetermined height and a predetermined width.

Moreover, as shown in FIG. 7, inside the top plate portion 41A of the lid case 41, the suction chamber 33 and the bearing chamber portions 40D, 40E are joined to the inner side wall portions 40Db, 40Eb of the bearing chamber portions 40D, 40E. Partition ribs 41R and 41R that divide the bearing chambers 40D1 and 40E1 and push portions 41F and 41F that press the bearing portions 35J1 and 35J1 that rotatably hold the shaft 35J of the rotary cleaning body 35 from above. . Further, arm portions 41M and 41M extending rearward are formed on both sides of the rear portion of the top plate portion 41A, and hooks for attaching the lid case 41 to the main body case 40 inside the tip portions of the arm portions 41M and 41M. 41f and 41f are provided. Both ends of a shaft 44 extending to the left and right are attached to the partition ribs 41R and 41R.

In order to adjust the size of the opening area of the front suction port 46, an adjustment mechanism configured to be movable at least part of the wall forming the front suction port 46 is provided.
When the opening area of the front suction port 46 is changed, the dust suction pressure of the front suction port 46 changes accordingly.

  The adjusting mechanism constitutes at least a part of a wall forming the front suction port 46, for example, a cover 50, and means for moving the cover 50 so as to change the size of the opening area of the front suction port 46 The upper end of the cover 50 is pivotally attached to the lid case 41 via a shaft 44 so that the lower end rotates. The means for moving the cover 50 includes a shaft 44, a spring 45, and the like.

  The cover 50 is pressed when it is pressed against a wall or furniture, and is rotated so as to reduce the opening area of the front suction port 46, in other words, to narrow.

  In addition, when the front surface of the cover 50 is pressed against a wall or furniture, the adjustment mechanism revolves the lower end of the cover backward, independently of changing the size of the opening area of the front suction port 46. The size of the front suction port is changed so that at least a part of the cleaning member of the rotary cleaning body 35 protrudes forward from the suction port body 31 through the front suction port 46, in other words, is configured to be small. .

  As shown in FIG. 4, the cover 50 is inclined obliquely so that the amount of forward protrusion increases as it goes downward, and protrudes forward from the recess 42 and the front suction port 46, and the front end face Va of the bumper V Protrudes further forward. Side walls 51 and 51 are formed on both sides of the cover 50, and a gap formed between both side edges of the cover 50 and both sides of the recess 42 and the front suction port 46 is formed on the side walls 51 and 51. It is blocked by

  A holding portion 52 is formed on the back surface of the upper portion of the cover 50, and the holding portion 52 is rotatably held on the shaft 44. Further, the upper end 50b of the cover 50 is in contact with the upper edge portion 42A of the concave portion 42 of the lid case 41, and the cover 50 is restricted so that it cannot rotate counterclockwise around the axis 44 from the position shown in FIG. It can be rotated only in the clockwise direction from the position shown in FIG.

  In addition, a plurality of protrusions 53 extending in the left-right direction are formed on the front surface of the cover 50. Therefore, an uneven portion is formed by the plurality of protrusions 53 on the front surface of the cover 50.

  The cover 50 is made of a soft resin, has a function as a bumper that protects the suction inlet 30 and does not damage furniture or the like.

  A pair of springs 45 is mounted on the shaft 44, and the cover 50 is urged counterclockwise (in FIG. 4) by the springs 45 so that the cover 50 is always arranged at the position shown in FIG. It has become. That is, when the cover 50 is opened, the position of the lower end 50a of the cover 50 from the height H1 from the surface to be cleaned Y to the lower end 50a of the cover 50 and the positions of the front end walls 40Da, 40Ea of the main body case 40. The gap S up to is maximum. At this time, the wiping member 35 </ b> A of the rotary cleaning body 35 does not protrude to the outside from the front suction port 46.

  When the cover 50 is pushed backward against the biasing force of the spring 45, the cover 50 rotates clockwise (in FIG. 4) about the shaft 44. That is, the height H1 is reduced and the gap S is eliminated.

  At this time, at least a part of the cleaning member of the rotary cleaning body 35, for example, only the wiping member 35A is projected forward of the suction port body 31 through the front suction port 46 (see FIG. 9).

  Next, the operation of the suction port body 30 and the vacuum cleaner 20 configured as described above will be described.

  First, as shown in FIG. 1, a hose 22 is connected to the cleaner body 21, and a suction port body 30 is connected to a hand control tube 23 of the hose 22 via an extension tube 24. When the switch (not shown) of the operation unit 23A is operated, the electric blower is driven. By driving the electric blower, dust is sucked together with air from the suction opening 32 of the suction port body 30.

  The sucked dust and air are sucked into the dust collecting container 25 of the cleaner body 21 through the extension pipe 24 and the hose 22. Dust and air are separated in the dust collection container 25, the separated dust is accumulated in the dust collection container 25, and the air is sucked into the electric blower.

  On the other hand, the motor of the suction port body 30 is driven and the rotary cleaning body 35 is rotated. When the suction port body 30 is moved forward, the height H1 from the surface to be cleaned Y to the lower end 50a of the cover 50 is increased, so that dust on the surface to be cleaned Y is pushed forward by the cover 50. Therefore, dust on the surface to be cleaned Y can be efficiently sucked from the front suction port 46 and the suction opening 32 of the suction port body 30.

  Further, when the surface to be cleaned Y is a carpet or the like, the lower end portion 50a of the cover 50 is at a high position. Therefore, even if the suction port body sinks between the hair feet during the forward movement of the suction port body 30, the hair of the carpet The rate at which the foot contacts the cover 50 is reduced. For this reason, the resistance (load) when the suction port body moves forward is small, and the forward operation of the suction port body 30 can be performed very smoothly and easily.

  When the suction port body 30 is moved forward, the cover 50 is pressed against the wall K as shown in FIG. 8, and the wall K is pressed until it contacts the front end face Va of the bumper V of the suction port body 30. The cover 50 rotates clockwise (in FIG. 4) about the shaft 44 against the urging force of the spring 45. By this rotation, the height from the surface to be cleaned Y to the lower end portion 50a of the cover 50 becomes H2, and the height H2 becomes smaller than H1. Further, the gap S from the position of the front end wall portions 40Da, 40Ea of the main body case 40 to the position of the lower end portion 50a of the cover 50 is eliminated. That is, the lower end portion 50a of the cover 50 is retracted.

  Thus, when the opening area of the front suction port 46 of the suction port body 31 is reduced, the wind speed sucked from the front suction port 46 is increased, and the dust suction force at the wall K is increased. The K edge can be cleaned efficiently.

  Further, as shown in FIG. 8, the cover 50 is retracted from the chain line position to the solid line position, and the wiping member 35 </ b> A of the rotary cleaning body 35 passes through the front suction port 46 whose opening area is narrowed by the cover 50. The dust on the wall K can be swept mainly into the front suction port 46. This, together with the increase in the suction force of the front suction port 46 as described above, allows the dust to be sucked quickly and without waste.

  Furthermore, as shown in FIG. 9, since the wiping member 35A of the cleaning member protrudes forward from the cover 50, the dust on the wall K is surely scraped out by the wiping member 35A, or the wall K is wiped off reliably. Or wipe with 35A.

  Further, when the cover 50 is rotated toward the rotary cleaning body 35, the rotary cleaning body 35 is easily elastically deformed, and only the long wiping member 35A comes into contact with the back surface of the cover 50, and the scraping force is increased. Since the strong brush 35 </ b> B does not contact the back surface of the cover 50, the load when the rotary cleaning body 35 rotates is small, and the rotational force of the rotary cleaning body 35 does not decrease. Further, when a large number of cleaning members of different lengths and types are provided on the rotary cleaning body 35, a plurality of cleaning members may come into contact with the back surface of the cover 50, but at least have a strong waist (scraping force). If the cleaning member is not in contact with the back surface of the cover 50, a reduction in the rotational force of the rotary cleaning body can be suppressed.

  Since the front surface of the cover 50 is provided with a ridge 53 that forms a plurality of concavo-convex portions extending in the left-right direction, the suction port body 30 extends along the wall K in a state where the cover 50 is pressed against the wall K. When the cleaning is performed by moving left and right, the contact area between the wall K and the cover 50 is reduced, and the convex part in contact with the wall K extends in the left-right direction. Simple.

  In the above embodiment, a plurality of ridges 53 extending in the left-right direction are formed on the front surface of the cover 50, but the plurality of ridges are formed in the vertical direction to cover the vertical direction (in FIG. 8). The strength of 50 may be increased.

  Further, although the cover 50 is attached to the lid case 41, the cover 50 may be attached to an arbitrary wall of the suction port body in a suction port body that does not have the lid case 41.

  In addition, the cover 50 is configured such that the upper part rotates about the axis 44, but may be provided so as to be movable in the vertical direction.

  In this case, when the wall comes into contact with the front surface of the suction port main body 31, the cover 50 is lowered to narrow the opening area of the front suction port 46, and when separated from the wall, the cover 50 is lifted to raise the front suction port. The opening area of 46 is expanded.

  Moreover, you may provide the cover 50 so that it may translate back and forth with respect to a suction inlet main body. In this case, the cover 50 is made to abut against the wall and the cover 50 is retracted, and by retracting the cover, the tip of the cleaning member 35A of the rotary cleaning body can be protruded through the front suction port.

  As described above, the suction port body is formed by forming the bottom surface suction port 32 on the bottom surface 31 </ b> A of the suction port body 31, and the front surface suction port 46 is formed on the front surface of the suction port body 31 continuously to the bottom surface suction port 32. In addition, an adjustment mechanism having a cover 50 urged so that the front suction port 46 has a predetermined opening area is provided, and the cover 50 is provided when the front surface of the suction port body 31 comes into contact with a wall or furniture. As the lower end 50a of the cover 50 moves downward, the cover 50 narrows the opening area of the front suction port 46 and increases the dust suction force. Therefore, when the suction port body 30 is advanced, dust on the surface to be cleaned is removed. It does not push forward, and dust near the wall can be sucked efficiently.

  Further, a suction port body including a suction port body 31 having a suction chamber 33 having a suction opening 32 formed on the bottom surface 31A, and a rotary cleaning body 35 rotatably disposed in the suction chamber 33 and having cleaning members 35A and 35B. A front suction port 46 is formed on the front surface of the suction port body 31 continuously to the suction opening 32, and a movable cover 50 that forms one of the walls of the front suction port 46 is provided. When the front surface of 31 is pressed against a wall or furniture, the cover 50 is pressed, the cover 50 moves backward, and at least a part of the cleaning member 35 </ b> A of the rotary cleaning body 35 passes through the front suction port 46. 31 is projected forward. Therefore, the dust on the wall K can be reliably scraped out by the cleaning member 35A, or the wall K can be wiped off with the cleaning member 35A.

It is the perspective view which showed the external appearance of the electric vacuum cleaner which concerns on this invention. It is the perspective view which showed the suction inlet of the vacuum cleaner shown in FIG. It is the bottom view which showed the bottom face of the suction inlet shown in FIG. It is sectional drawing which showed the structure of the suction inlet shown in FIG. It is the perspective view which showed the main body case of the suction inlet body which removed the cover case. It is the perspective view which showed the main body case of the suction inlet body which removed the cover case and the rotation cleaning body. It is the perspective view which showed the back surface of the lid case. It is explanatory drawing which showed the state which the cover rotated and the wiping member of the rotary cleaning body contacted the back surface of the cover. It is explanatory drawing which showed the state which the wiping member of the rotary cleaning body protruded ahead from the cover. It is explanatory drawing which showed the structure of the conventional suction inlet. It is the perspective view which showed the external appearance of the vacuum cleaner which concerns on this invention.

Explanation of symbols

30 Suction Port Body 31 Suction Port Body 32 Bottom Bottom Suction Port 33 Suction Chamber 35 Rotating Cleaning Body 35A Cleaning Member (Wiping Member)
35B Cleaning member (brush)
44 shaft 50 cover

Claims (5)

A suction port body having a suction chamber in which a bottom surface suction port is formed;
A suction port provided with a rotary cleaning body rotatably disposed in the suction chamber and having a cleaning member;
Provided at least a part of the front wall portion of the suction port body movably back and forth,
When the front wall part retreats, the cleaning member comes into contact with the back surface of the front wall part and bends, so that the cleaning member that has been in contact is between the lower end of the front wall part and the surface to be cleaned. A suction port characterized by projecting to the side . The rotary cleaning body includes a shaft portion and a plurality of cleaning members having different lengths attached to the shaft portion at intervals in the circumferential direction of the shaft portion, and when the front wall portion retreats. The suction port body according to claim 2, wherein the long cleaning member projects forward from between the lower end of the front wall portion and the surface to be cleaned, and the short cleaning member does not project . The suction port body according to claim 1 or 2, wherein the rotary cleaning body rotates so that the cleaning member cleans the surface to be cleaned from the front side toward the rear side . The suction port body according to any one of claims 1 to 3, wherein the front wall portion is made of a soft resin . The vacuum cleaner provided with the suction inlet body as described in any one of Claims 1 thru | or 4.

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