JP2010136826A - Suction tool for vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction tool for a vacuum cleaner capable of surely lowering the rotation speed of a rotary brush when it is separated from a floor surface in the configuration of rotating the rotary brush by rotary force generated by the rotation of a turbine utilizing the flow of air sucked into a housing. <P>SOLUTION: On the bottom surface 2A of the housing 2 of the suction tool 1, a detecting projection 13 is provided. The detecting projection 13 is displaced to a projecting position when the bottom surface 2A of the housing 2 is separated from the floor surface X and is displaced to a non-projecting position when the housing 2 is arranged on the floor surface X. In the communication part 16 of a main suction air path 14 and an air path 15 for the turbine, an opening/closing member 23 is provided. Since the opening/closing member 23 opens the communication part 16 when the detecting projection 13 is at the non-projecting position, the rotary brush 10 is rotated. Meanwhile, when the detecting projection 13 is at the projecting position, since the opening/closing member 23 closes the communication part 16, the rotation of the rotary brush 10 is stopped. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

Conventionally, in a vacuum cleaner suction tool, a rotary brush is disposed in a suction port formed on a surface of the housing that faces the floor surface, and the rotary brush is rotated to scrape dust on the floor surface. The floor surface is cleaned by sending the scraped dust from the suction port to the main body of the vacuum cleaner.
In addition, when the air is sucked into the housing by the suction force of the vacuum cleaner main body, the suction brush that rotates the rotating brush by the rotational force generated by the turbine rotating using the air flow Tools are also known (see Patent Document 1).

A suction port (corresponding to a suction tool) described in Patent Document 1 has a suction port formed on the bottom surface, and a brush chamber that houses a rotating brush facing the suction port, and a turbine chamber that houses a turbine. And an intake port for allowing outside air to flow into the turbine chamber. The mouthpiece is provided with a mouthpiece joint connected to the cleaner body side.
In such a suction body, the outside air flowing into the turbine chamber from the suction port and the air and dust sucked into the brush chamber from the suction port merge and then pass through the suction joint and are sent to the cleaner body side. .
JP 2002-272653 A

  In the suction body described in Patent Document 1, when the suction body is lifted and released from the floor surface while the suction force of the vacuum cleaner main body is generated, it is sucked from the suction opening by opening the whole suction mouth. Accordingly, the amount of outside air flowing into the turbine chamber from the intake port decreases. As a result, even if the suction body is moved away from the floor surface while the vacuum cleaner is generating suction power, the turbine will hardly rotate and the rotating brush will hardly rotate. It is safe to put your hand and touch the rotating brush.

However, for further safety improvement, it is desirable that the rotational speed of the rotating brush can be reduced more reliably when the suction body is separated from the floor surface.
The present invention has been made under such a background. In the configuration in which the rotating brush is rotated by the rotational force generated by the rotation of the turbine using the flow of air sucked into the housing, the present invention is separated from the floor surface. It is an object of the present invention to provide a vacuum cleaner suction tool that can reliably reduce the rotational speed of a rotating brush.

  In the first aspect of the present invention, a main suction port is formed on the bottom surface, an opening is formed at a position different from the main suction port, one end is connected to the housing, and the other end protrudes from the housing. A bend pipe that can be connected to the main body of the vacuum cleaner, a rotary brush that is rotatably provided on the housing and faces the main suction port, and is partitioned into the housing, from the main suction port to one end of the bend pipe. A main suction air passage that communicates with the housing, the housing is partitioned separately from the main suction air passage, and is provided in the turbine air passage that communicates from the opening to the main suction air passage, The turbine is rotated by the air flowing in from the opening and flowing through the turbine air passage, and the rotating brush is rotated by the rotational force, and is provided on the bottom surface of the housing. A protrusion position protruding from the bottom surface when the bottom surface of the hooding is separated from the floor surface, and a protrusion that is displaced into a non-protruding position that is retracted into the housing and does not protrude from the bottom surface when the housing is disposed on the floor surface, An opening / closing member that is provided in a communication portion between the main suction air passage and the turbine air passage, and that opens the communication portion when the projection is in the non-projecting position, and closes the communication portion when the projection is in the projection position. And a vacuum cleaner suction tool.

According to a second aspect of the present invention, in the electric cleaning according to the first aspect, the opening / closing member is arranged so as to substantially follow the inner surface of the main suction air passage when the communication portion is closed. This is a mechanical suction tool.
According to a third aspect of the present invention, a sub suction port communicating with the main suction air passage is formed on a front surface of the housing, and the rotating brush faces the main suction port and the sub suction port, and the sub suction port is formed. The shutter according to claim 1 or 2, further comprising: a shutter that covers the mouth so as to be opened and closed; and a positioning member that positions the protrusion at a non-projecting position when the shutter opens the auxiliary suction port. A vacuum cleaner suction tool.

  According to the first aspect of the present invention, in this vacuum cleaner suction tool, air containing dust on the floor surface is sucked into the housing from the main suction port on the bottom surface of the housing by the suction force of the vacuum cleaner body. After flowing through the main suction air passage, it flows into the bend pipe from one end of the bend pipe that is rotatably connected to the housing, and is then sent to the main body of the vacuum cleaner. Here, since the rotating brush rotates and scrapes the dust on the floor surface, the main suction port can efficiently suck the dust on the floor surface.

  An opening is formed in the housing at a position different from the main suction port, and the turbine provided in the turbine air passage communicating from the opening to the main suction air passage is opened by the suction force of the main body of the vacuum cleaner. Rotated by the air flowing in through the turbine air passage and rotating the rotating brush by the rotational force. The air flowing through the turbine air passage merges with the air and dust flowing through the main suction air passage at the communication portion between the main suction air passage and the turbine air passage, and is sent to the main body of the vacuum cleaner.

Here, a projection is provided on the bottom surface of the housing. When the bottom surface of the housing is separated from the floor surface, the protrusion is displaced to a projecting position projecting from the bottom surface. When the housing is disposed on the floor surface, the projection is displaced into a non-projecting position that is retracted into the housing and does not project from the bottom surface.
And the opening-and-closing member is provided in the communication part mentioned above.
The opening / closing member opens the communicating portion when the protrusion is in the non-projecting position (when the housing is disposed on the floor surface), so that the suction force of the vacuum cleaner body acts on the turbine air passage and the air However, the turbine can be rotated by flowing in through the opening and flowing through the turbine air passage. Thereby, the rotating brush rotates.

  On the other hand, the open / close member closes the communicating portion when the protrusion is in the protruding position (when the bottom surface of the housing is separated from the floor surface), so that the main suction air passage and the turbine air passage are blocked. Therefore, the suction force of the main body of the vacuum cleaner does not act on the turbine air passage, and air cannot flow through the opening and flow through the turbine air passage. As a result, the rotation of the rotating brush stops (the rotating speed of the rotating brush decreases).

Thus, in this vacuum cleaner suction tool, the protrusion detects whether or not the housing is arranged on the floor surface, and based on the detection result, the opening and closing member opens and closes the communicating portion. When away from the floor, the rotational speed of the rotating brush can be reliably reduced.
According to the second aspect of the present invention, when the open / close member is closed, the open / close member is disposed so as to substantially follow the inner surface of the main suction air passage. Without hindering, it is possible to reduce flow path loss and noise in the main suction air passage.

  According to the third aspect of the present invention, the front surface of the housing is formed with the sub suction port communicating with the main suction air passage, and the rotating brush faces the main suction port and the sub suction port. And the sub suction port is covered by the shutter so that opening and closing is possible. For this reason, when the shutter opens the sub suction port, the vacuum cleaner suction tool can suck dust from both the main suction port and the sub suction port. In particular, in this vacuum cleaner suction tool, when it is desired to clean a narrow part sandwiched between a wall and furniture on the floor surface, the housing is erected so that the opened auxiliary suction port faces the floor surface. The housing can be inserted between the wall and the furniture, and dust in this narrow portion can be sucked from the auxiliary suction port.

  When the housing stands up in this way, the bottom surface of the housing moves away from the floor surface, so that the projection is displaced to the protruding position, and the opening and closing member closes the communicating portion accordingly, and the rotation of the rotating brush stops. Resulting in. In this case, in the sub suction port, the dust in the narrow portion described above cannot be efficiently sucked by the rotating brush. Further, the protrusion displaced to the protruding position interferes with the wall or the furniture, so that there is a possibility that the housing cannot be smoothly inserted between the wall and the furniture.

  Therefore, since the positioning member positions the protrusion at the non-projecting position when the shutter opens the sub suction port, even if the housing is raised in this state, the protrusion is still at the non-projecting position, and the opening / closing member is Open the communication part. Therefore, when the housing is upright, the protrusion at the non-projecting position does not get in the way, so the housing can be smoothly inserted between the wall and the furniture, and the rotating brush can rotate, so the sub suction port Then, the dust of the narrow part mentioned above can be sucked in efficiently.

Embodiments of the present invention will be specifically described below with reference to the drawings.
Drawing 1 is a perspective view which looked at vacuum cleaner suction tool 1 concerning one embodiment of this invention from the right front side. Below, the front-back, left-right direction of the suction tool 1 is prescribed | regulated on the basis of the attitude | position of the suction tool 1 in FIG. In FIG. 1, the near side is the front side, and the far side is the rear side. Moreover, the left-right direction is synonymous with the width direction. In addition, the suction tool 1 of FIG. 1 is arrange | positioned on the floor surface X, and is in the state which can clean the floor surface X top.

Referring to FIG. 1, the suction tool 1 includes a housing 2 and a bend pipe 3.
The housing 2 has a hollow box shape that is long in the width direction and flat in the vertical direction. The right portion of the top surface of the housing 2 bulges upward in an arc shape. A main suction port 4 (not shown in FIG. 1, see FIG. 2 described later) is formed on the bottom surface 2 </ b> A of the housing 2. A sub suction port 5 is formed on the front surface of the housing 2. The sub-suction port 5 has a rectangular shape that is long in the width direction and has a size covering almost the entire front surface of the housing 2. A substantially semicircular opening 6 bulging upward is formed on the rear side of the right side of the housing 2 (a position different from the main suction port 4). The opening 6 is covered with a net 24 having a mesh of a predetermined size. The main suction port 4, the sub suction port 5 and the opening 6 communicate with the inside of the housing 2.

  A shutter 7 is provided on the front surface of the housing 2. The shutter 7 has a plate shape that is long in the width direction. The shutter 7 is curved so as to bulge in a circular arc shape toward the front upper side when viewed from the width direction (see also FIG. 3 described later). A convex portion 8 that protrudes frontward and upward is integrally provided in the entire width direction region of the lower end portion of the shutter 7. The shutter 7 covers the sub suction port 5 from the front upper side so as to be openable and closable (FIG. 1 shows a state in which the shutter 7 closes the sub suction port 5).

  A connecting tube 9 is attached to the center of the rear surface of the housing 2 in the width direction. The connecting cylinder 9 has a substantially cylindrical shape having a central axis extending in the front-rear direction, is inserted through the rear surface of the housing 2 from the rear, and is supported by the housing 2 so as to be rotatable about the central axis described above. , Part of the housing 2. The inside of the connection tube 9 communicates with the housing 2. The rear end surface of the connection tube 9 and one place on the outer peripheral portion are continuously cut out to form a cutout portion 9A.

  The bend pipe 3 is elongated in the front-rear direction in FIG. 1, and its front end 3A is formed in a substantially spherical shape. The front end 3A of the bend pipe 3 is inserted through the notch 9A of the connection tube 9 of the housing 2 from behind, whereby the bend pipe 3 is supported by the connection tube 9 (housing 2). Specifically, in the bend pipe 3, the front end 3 </ b> A (one end) is connected to the housing 2, and the rear end 3 </ b> B (the other end) protrudes rearward from the housing 2. In this state, the bend pipe 3 is rotatable with respect to the connection tube 9 with the front end 3A as a fulcrum. In FIG. 1, the bend pipe 3 is rotatable up and down. Since the connection tube 9 is rotatable about a central axis extending in the front-rear direction, the bend pipe 3 is rotated with respect to the connection tube 9 and the center extending in the front-rear direction together with the connection tube 9. It can be rotated around an axis. The inside of the bend pipe 3 communicates with the inside of the housing 2 through the inside of the connection cylinder 9. The rear end 3B of the bend pipe 3 is connected to an electric vacuum cleaner main body (not shown) via a hose (not shown) or the like.

  When the vacuum cleaner body (not shown) is operated, a suction force is generated in the vacuum cleaner body (not shown), and this suction force acts on the bend pipe 3 and the housing 2. Thereby, the air outside the housing 2 is sucked into the housing 2 from the above-described main suction port 4 (see FIG. 2) on the bottom surface of the housing 2. Therefore, when the main suction port 4 faces the floor surface X, dust on the floor surface X rides on the air sucked into the housing 2 from the main suction port 4 and is sucked into the housing 2 from the main suction port 4. Then, it reaches the vacuum cleaner body (not shown) via the bend pipe 3 and the above-described hose (not shown), and is stored in the vacuum cleaner body (not shown).

  Here, if the shutter 7 opens the sub suction port 5, dust can be sucked into the housing 2 not only from the main suction port 4 but also from the sub suction port 5. For example, the housing 2 is erected so that the sub suction port 5 faces the floor surface X from above instead of the main suction port 4 on the bottom surface 2 </ b> A of the housing 2. Then, in the housing 2, the sub-suction port 5 side becomes the bottom surface and the bend pipe 3 side becomes the top surface, so that the housing 2 becomes thin in the front-rear direction (horizontal direction). The housing 2 can be inserted into the housing. And the dust of the floor surface X in such a narrow location can be sucked into the housing 2 from the sub suction port 5.

The role of the opening 6 will be described later.
FIG. 2 is a bottom view of the suction tool 1.
As shown in FIG. 2, the main suction port 4 described above is formed at a position biased to the front side (right side in FIG. 2) on the bottom surface 2 </ b> A of the housing 2. The main suction port 4 has a rectangular shape that is long in the width direction (vertical direction in FIG. 2).

  A rotating brush 10 is provided in the housing 2. The rotating brush 10 includes a rotating shaft 10A extending along the width direction, and a brush 10B planted on the outer peripheral surface of the rotating shaft 10A. The left end of the rotating shaft 10A is rotatably supported by the left end of the housing 2 via a bearing 22 (see FIG. 4 described later), and the right end of the rotating shaft 10A is supported by the bearing 22 (FIG. 4 described later). Through the right end portion of the housing 2. In this state, the lower part of the rotating brush 10 is exposed downward from the main suction port 4. That is, the rotating brush 10 is rotatably provided on the housing 2 and faces the main suction port 4.

  A pair of extending portions 11 are integrally provided on the rear surface of the housing 2 (left surface in FIG. 2) so as to extend rearward while sandwiching the connection tube 9 from the width direction. A roller 12 is rotatably provided at the rear end of each extending portion 11. By rotating the roller 12 on the floor surface X (see FIG. 1 and FIG. 3 described later), the housing 2 can be smoothly moved on the floor surface X.

Further, a detection projection 13 (protrusion) is provided in a region on the left side (upper side in FIG. 2) in the rear portion of the bottom surface 2 </ b> A of the housing 2 from the main inlet 4. The role of the detection protrusion 13 will be described later.
FIG. 3 is a left sectional view of the suction tool 1.
As shown in FIG. 3, a main suction air passage 14 is defined in the housing 2. The main suction air passage 14 extends from the main suction port 4 to the rear upper side (upper left side in FIG. 3) and communicates with the front end 3 </ b> A of the bend pipe 3 as indicated by a thick broken line arrow. Here, the inside of the connecting cylinder 9 described above forms a part of the main suction air passage 14.

Here, the sub suction port 5 described above communicates with the main suction air passage 14 from the front side. Further, the rotating brush 10 faces not only the main suction port 4 but also the sub suction port 5.
As shown in FIG. 3, when the vacuum cleaner body (not shown) is operated with the main suction port 4 facing the floor surface X from above, the vacuum cleaner body (not shown) is generated. The suction force acts in the bend pipe 3 and the main suction air passage 14. As a result, dust on the floor surface X is sucked into the housing 2 from the main suction port 4 and travels toward the bend pipe 3 through the main suction air passage 14. Here, when the rotating brush 10 is rotated, dust on the floor surface X is directed toward the main suction port 4 by the rotating brush 10 (specifically, the brush 10B exposed from the main suction port 4 to the floor surface X). It is scraped up. Thereby, the dust on the floor surface X is efficiently sucked into the housing 2 (main suction air passage 14) from the main suction port 4.

FIG. 4 is a perspective view of the suction tool 1 in a state where the inside of the housing 2 is exposed as seen from the upper right side.
As shown in FIG. 4, the main suction air passage 14 communicates the main suction port 4 that is long in the width direction with the bend pipe 3 that is disposed at the center in the width direction of the rear surface of the housing 2. As seen, it has a convex shape that becomes narrower toward the rear side.

  Here, a turbine air passage 15 is partitioned in the housing 2 separately from the main suction air passage 14. The turbine air passage 15 is partitioned into an area on the right rear side (the rear side of the right side portion of the main suction port 4) in the housing 2. The turbine air passage 15 extends in the width direction. The right end portion of the turbine air passage 15 communicates with the opening 6 (see FIG. 1) on the right surface of the housing 2 described above. The left end portion 15A of the turbine air passage 15 has a hollow box shape that is long in the width direction, and communicates with the rear end portion of the main suction air passage 14 (specifically, the portion on the near side of the connecting tube 9) from above. Yes. That is, the turbine air passage 15 communicates with the main suction air passage 14 from the opening 6 (see FIG. 1).

A communicating portion 16 between the main suction air passage 14 and the turbine air passage 15 (left end portion 15 </ b> A) is formed in an upper portion of the rear end portion of the main suction air passage 14. The communication portion 16 is a wide and substantially rectangular hole defined by a wide and substantially U-shaped edge 17 (see the hatched portion) extending rearward and upward along the main suction air passage 14.
A turbine 18 is provided in the turbine air passage 15. The turbine 18 is integrally provided with a rotating shaft 18A extending in the width direction and blades 18B fixed to the rotating shaft 18A. The right end portion of the rotation shaft 18 </ b> A is rotatably supported by the right end portion of the housing 2 via a bearing 19. Therefore, the entire turbine 18 is rotatable about the rotation shaft 18A.

  Here, a pulley (referred to as a turbine pulley 20) is attached to the right end portion (specifically, the portion on the left side of the bearing 19) of the rotating shaft 18 </ b> A of the turbine 18, and the right end portion of the rotating shaft 10 </ b> A of the rotating brush 10 ( Specifically, a pulley (referred to as a brush pulley 21) is attached to a portion on the left side of the right bearing 22. The turbine pulley 20 and the brush pulley 21 are substantially at the same position in the width direction, and a toothed belt 50 (not shown in FIG. 4 and FIG. 14 to be described later) is interposed between the turbine pulley 20 and the brush pulley 21. Reference) is wound. Thereby, the rotating brush 10 and the turbine 18 are connected.

  As described above, when a suction force is generated in the vacuum cleaner body (not shown) by operating the vacuum cleaner body (not shown), the suction force is generated in the bend pipe 3 and in the bend pipe 3 as described above. It acts in the main suction air passage 14 and further acts in the turbine air passage 15 via the communication portion 16. As a result, the air outside the housing 2 flows into the turbine air passage 15 from the opening 6 (see FIG. 1), flows to the left in the turbine air passage 15, and enters the main suction air passage 14 from the communication portion 16. (See the thick dashed arrow shown). The turbine 18 is rotated by this air by receiving the air flowing from the opening 6 and flowing through the turbine air passage 15 with the blades 18B. As the turbine 18 rotates, the rotating brush 10 connected to the turbine 18 also rotates as described above. In other words, the turbine 18 rotates the rotating brush 10 by its rotational force. Since the opening 6 is covered with the net 24 as described above (see FIG. 1), dust outside the housing 2 flows into the turbine air passage 15 from the opening 6 along with the air. Absent.

FIG. 5 is a perspective view of the suction tool 1 in the state where the interior of the housing 2 is exposed from the upper left side, and an opening / closing member 23 is added.
Referring to FIG. 5, the communication portion 16 is provided with an opening / closing member 23. The opening / closing member 23 is in the form of a single plate that is long in the width direction, and has a size that fits in the left end 15A that is a box shape that is long in the width direction and hollow in the turbine air passage 15 as described above. ing.

  A support shaft 25 extending along the width direction is integrally provided at the rear edge of the opening / closing member 23 (the edge extending in the width direction at the upper end in FIG. 5). The right end portion of the support shaft 25 is inserted into the upper end portion of the right wall 15B of the left end portion 15A of the turbine air passage 15 from the left, and the left end portion of the support shaft 25 is the left wall of the left end portion 15A of the turbine air passage 15. The upper end of 15C is inserted from the right and protrudes to the left from the left wall 15C. As a result, the opening / closing member 23 is rotatably supported by the left end portion 15 </ b> A of the turbine air passage 15 around the support shaft 25.

Specifically, the opening / closing member 23 is rotatable between a closed position inclined forward and downward as shown in FIG. 5 and an open position substantially parallel to the horizontal position (see FIG. 6C described later). is there.
As described above, the opening / closing member 23 in the closed position extends from the top to the rear upper side and comes into contact with substantially the entire area of the edge 17 (see FIG. 4) that defines the communication portion 16, thereby closing the communication portion 16. (See also FIG. 3). At this time, since the opening / closing member 23 is inclined to the lower front side, the opening / closing member 23 is arranged so as to substantially follow the inner surface of the main suction air passage 14 extending to the upper rear side (see FIG. 3). Therefore, the opening / closing member 23 does not hinder the air flowing through the main suction air passage 14, and can reduce flow path loss and noise in the main suction air passage 14. Here, if the flow path loss can be reduced, the opening / closing member 23 in the closed position can be smoothly rotated to the open position.

The open / close member 23 in the open position is spaced apart upward (not shown) with respect to the edge 17 (see FIG. 4) to open the communication portion 16 (see FIG. 6C).
Thus, the opening / closing member 23 opens and closes the communication portion 16 by rotating, so that the opening / closing member is compared with a case where the communication portion 16 is opened and closed by sliding parallel to the edge 17 (see FIG. 4), for example. It is difficult for foreign matters such as dust to be clogged between the edge 23 and the edge 17, and the opening / closing member 23 can smoothly open and close the communicating portion 16.

Here, as described above, the detection protrusion 13 is provided on the bottom surface 2 </ b> A of the housing 2.
In FIG. 5, the detection protrusion 13 includes a pair of plates 26 arranged at an interval in the width direction, and a shaft 27 (see a portion indicated by a dotted line) installed between the front end portions of the pair of plates 26. And a roller 28 that is rotatably supported by the shaft 27.

  In relation to the detection protrusion 13, a recess 29 is formed in the bottom wall of the housing 2 so as to be recessed upward from the bottom surface 2 </ b> A of the housing 2 into the housing 2 (see also FIG. 2). A support shaft 30 extending in the width direction is provided on the upper side. Both end portions in the width direction of the support shaft 30 are rotatably supported from below by the portions on both sides in the width direction of the recesses 29 on the bottom wall of the housing 2.

  The detection protrusion 13 is supported by the support shaft 30 in the recess 29. Specifically, the rear end of each plate 26 of the detection protrusion 13 is connected to the support shaft 30. In this state, the detection protrusion 13 can freely rotate together with the support shaft 30. Specifically, the detection protrusion 13 (see also FIG. 6A described later) and the non-protrusion position (described later). 6 (see (c)). The detection protrusion 13 is always urged by a spring 54 (see FIGS. 6 and 7 described later) in a direction from the non-projecting position to the projecting position.

  Although not shown, the detection protrusion 13 in the non-projecting position is completely accommodated in the recess 29, in other words, retracts into the housing 2 and hardly protrudes from the bottom surface 2A of the housing 2 (FIG. 6). (See (c)). The detection protrusion 13 is pressed from below by the floor surface X when the housing 2 is disposed on the floor surface X and the bottom surface 2A of the housing 2 faces the floor surface X with a slight gap therebetween. By doing so, it is positioned at the non-projecting position (see FIG. 6C).

  When the bottom surface 2A of the housing 2 is separated from the floor surface X to some extent by lifting the housing 2 in a state where the detection projection 13 is in the non-projection position, the detection projection 13 has its own weight and the above-described spring 54 (FIG. 6 described later). And the urging force (see FIG. 7) is released downward from the recess 29 and protrudes from the bottom surface 2A of the housing 2. The position of the detection protrusion 13 at this time is the protruding position shown in FIG. That is, in FIG. 5, the bottom surface 2 </ b> A of the housing 2 is separated from the floor surface X.

The opening / closing member 23 and the detection protrusion 13 are connected by a link mechanism 31.
The link mechanism 31 includes a first lever 32 provided integrally with the support shaft 25 on the opening / closing member 23 side, a second lever 33 provided integrally with the support shaft 30 on the detection protrusion 13 side, and the first lever 32. A third lever 34 that connects the second lever 33 is included. Below, the 1st lever 32, the 2nd lever 33, and the 3rd lever 34 are demonstrated on the basis of the attitude | position in FIG.

The first lever 32 is orthogonal to the support shaft 25 extending in the width direction, and extends from the left end portion of the support shaft 25 to the front side.
The second lever 33 is orthogonal to the support shaft 30 extending in the width direction, and extends from the right end of the support shaft 30 to the front upper side.
The third lever 34 is constructed between the front end portion of the first lever 32 and the front upper end portion of the second lever 33.

One connecting shaft 35 extending in the width direction is inserted through the upper end portion of the third lever 34 and the front end portion of the first lever 32. Thereby, the first lever 32 and the third lever 34 are rotatable with respect to each other about the connecting shaft 35.
One connecting shaft 36 extending in the width direction is inserted through the lower end of the third lever 34 and the front upper end of the second lever 33. As a result, the second lever 33 and the third lever 34 are rotatable with respect to the connecting shaft 36.

In FIG. 5, in the state where the opening / closing member 23 and the detection protrusion 13 are connected by the link mechanism 31, as described above, the opening / closing member 23 is in the closed position, and the detection protrusion 13 is in the protruding position.
Here, FIG. 5 shows a state in which the shutter 7 described above closes the auxiliary suction port 5. Both end portions in the width direction of the shutter 7 are bent to the rear side, and are supported rotatably by both end portions in the width direction of the housing 2. Therefore, the shutter 7 opens the auxiliary suction port 5 to the front side by rotating from the state shown in FIG. 5 to the rear upper side (counterclockwise direction in the left side view).

  At the upper end of the shutter 7, a rib 37 (positioning member) extending rearward is integrally provided at a position that coincides with the second lever 33 of the link mechanism 31 in the width direction (see the hatched portion). ). The rib 37 is curved in an arc shape so as to be continuous with the shutter 7 when viewed from the width direction. The rear end of the rib 37 is positioned on the front side of the front upper end portion of the second lever 33.

FIG. 6 is a left side view of the main part for explaining the movement of the shutter 7, the detection protrusion 13, and the opening / closing member 23.
FIG. 6A shows a state in which the opening / closing member 23 is in the closed position and the detection protrusion 13 is in the protruding position as the bottom surface 2A of the housing 2 is separated from the floor surface X as described above.
Here, when the housing 2 is lowered and the detection protrusion 13 is pressed upward by the floor surface X as shown in FIG. 6B, the detection protrusion 13 at the protruding position is centered on the support shaft 30. Turns counterclockwise (upward) when viewed from the left side. At this time, the second lever 33 integrated with the support shaft 30 also rotates in the counterclockwise direction (upward) in the left side view with the support shaft 30 as the center. As a result, the third lever 34 connected to the second lever 33 presses the front end portion of the first lever 32 in the counterclockwise direction (upward) when viewed from the left side while being raised. As a result, since the first lever 32 is integrated with the support shaft 25 on the opening / closing member 23 side, the first lever 32 rotates around the support shaft 25 in the counterclockwise direction (upward) in the left side view, Accordingly, the opening / closing member 23 also rotates counterclockwise (upward) when viewed from the left side.

  Then, as shown in FIG. 6C, when the housing 2 is lowered until it is arranged on the floor surface X (until the space between the bottom surface 2A of the housing 2 and the floor surface X becomes small), the detection protrusion 13 is formed. Rotate to the limit (upper limit) in the counterclockwise direction when viewed from the left side, retract into the housing 2 (the above-described recess 29), and hardly protrude from the bottom surface 2A of the housing 2. That is, the detection projection 13 reaches the non-projection position. As the detection protrusion 13 rotates to the limit in this way, the opening / closing member 23 also rotates to the limit (upper limit) in the counterclockwise direction when viewed from the left side, and the detection protrusion 13 is moved to the non-projection position. Simultaneously with the arrival, the opening / closing member 23 reaches the open position.

In this way, when the housing 2 is lowered, the shutter 7 is not interlocked with any of the detection protrusion 13 and the opening / closing member 23 and is always in a state in which the sub suction port 5 is closed.
When the housing 2 is lifted in the state shown in FIG. 6C (the housing 2 is disposed on the floor surface X, the opening / closing member 23 is in the open position, and the detection protrusion 13 is in the non-projecting position). As shown in FIG. 6B, the detection projection 13 is rotated in the clockwise direction (downward) in the left side view about the support shaft 30 by its own weight and the biasing force of the spring 54 described above. At this time, the second lever 33 also rotates about the support shaft 30 in the clockwise direction (downward) when viewed from the left side. As a result, the third lever 34 connected to the second lever 33 presses the front end portion of the first lever 32 in the clockwise direction (downward) as viewed from the left side while descending. As a result, the first lever 32 rotates about the support shaft 25 on the opening / closing member 23 side in the clockwise direction (downward) when viewed from the left side. Accordingly, the opening / closing member 23 is also viewed from the left side. Rotate clockwise (downward).

  6A, when the housing 2 is further lifted and the bottom surface 2A of the housing 2 is separated from the floor surface X by a predetermined distance, the detection protrusion 13 is limited in the clockwise direction when viewed from the left side ( Rotate to the lower limit) and protrude from the bottom surface 2A of the housing 2. That is, the detection protrusion 13 reaches the protrusion position. Further, as the detection protrusion 13 rotates to the limit in this way, the opening / closing member 23 also rotates to the limit (lower limit) in the clockwise direction when viewed from the left side, and the detection protrusion 13 reaches the protruding position. At the same time, the opening / closing member 23 reaches the closed position.

  Thus, the opening / closing member 23 is in the open position when the detection projection 13 is in the non-projecting position (when the housing 2 is disposed on the floor surface X) as shown in FIG. Then, the communication portion 16 (see also FIG. 4) is opened. As a result, the suction force of the electric vacuum cleaner main body (not shown) acts on the turbine air passage 15 (see FIG. 4), and the air flows from the opening 6 (see FIG. 1) to enter the turbine air passage. 15, the turbine 18 can be rotated (see the thick broken arrow in FIG. 4), and as a result, the rotating brush 10 (see FIG. 4) rotates.

  On the other hand, the opening / closing member 23 is in the closed position when the detection projection 13 is in the protruding position (when the bottom surface 2A of the housing 2 is separated from the floor surface X to some extent) as shown in FIG. Then, the communication part 16 is closed. Thereby, since the main suction air passage 14 and the turbine air passage 15 are blocked, the suction force of the vacuum cleaner main body (not shown) does not act on the turbine air passage 15, and the air is opened 6. Inflow from (see FIG. 1) cannot flow through the turbine air passage 15 (see FIG. 5). Therefore, the rotation of the rotating brush 10 (see FIG. 4) stops (the rotating speed of the rotating brush 10 decreases). When the opening / closing member 23 closes the communication portion 16, the rotating brush 10 may be rotated at a low speed that does not cause any problem when touched. In this case, the opening / closing member 23 completely rotates the communication portion 16. It does not have to be closed.

Thus, in this suction tool 1, whether or not the housing 2 is disposed on the floor surface X is properly detected by the detection protrusion 13, and the opening / closing member 23 opens and closes the communication portion 16 based on the detection result. Therefore, when the housing 2 is separated from the floor surface X, the rotational speed of the rotary brush 10 can be reliably reduced.
FIG. 7 is a left side view of an essential part for explaining the movement of the shutter 7, the detection protrusion 13, and the opening / closing member 23 in a state different from that in FIG. 6.

As described above, when the housing 2 is erected so that the sub suction port 5 faces the floor surface X from above, the bottom surface 2A of the housing 2 is once separated from the floor surface X. As shown, the detection protrusion 13 is in the protruding position, and accordingly, the opening / closing member 23 is in the closed position. Here, in FIG. 7A, it is assumed that the shutter 7 is in a state in which the sub suction port 5 is closed.
Then, as shown in FIG. 7A, when the housing 2 is lifted from the floor surface X and lowered toward the floor surface X, the convex portion 8 of the shutter 7 is placed on the floor surface X from above. Contact. Thereby, the convex part 8 is pressed from the bottom by the floor surface X, and the shutter 7 rotates counterclockwise (upward) in the left side view. Here, the counterclockwise direction is a direction in which the shutter 7 tries to open the sub suction port 5.

  Thus, when the shutter 7 rotates counterclockwise in the left side view, the rib 37 provided on the shutter 7 also rotates in the counterclockwise direction (upward) in the left side view. Then, the second lever 33 provided integrally with the support shaft 30 on the detection projection 13 side is pressed in the counterclockwise direction (upward) in the left side view. As a result, the third lever 34 connected to the second lever 33 presses the first lever 32 in the counterclockwise direction (upward) when viewed from the left side, as shown in FIG. 7B. As a result, the first lever 32 rotates in the counterclockwise direction when viewed from the left side about the support shaft 25 on the side of the opening / closing member 23. Accordingly, the opening / closing member 23 is also counterclockwise when viewed from the left side. Rotate in the direction of rotation. Further, the rib 37 presses the second lever 33 in the counterclockwise direction when viewed from the left side, so that the detection protrusion 13 and the second lever 33 are rotated in the counterclockwise direction when viewed from the left side.

  When the housing 2 is further lowered and the shutter 7 completely opens the sub-suction port 5 as shown in FIG. 7C, the detection projection 13 rotates to the limit in the counterclockwise direction when viewed from the left side. Reach the non-protruding position. At the same time, the opening / closing member 23 also rotates to the limit in the counterclockwise direction when viewed from the left side and reaches the open position. In this state, since the second lever 33 is in contact with the rib 37 of the shutter 7 and maintains the same posture, the detection projection 13 is in the non-projecting position and the opening / closing member 23 is opened. Both are in position. That is, when the shutter 7 opens the auxiliary suction port 5, the rib 37 positions the detection protrusion 13 at the non-projecting position.

  When the housing 2 stands up, the bottom surface 2A of the housing 2 is separated from the floor surface X. Therefore, when the rib 37 is not provided, the detection protrusion 13 is in the protruding position as shown in FIG. The opening and closing member 23 closes the communicating portion 16 in response to the displacement, and the rotation of the rotating brush 10 (see FIG. 4) stops. In this case, the auxiliary suction port 5 cannot efficiently suck the dust on the floor surface X in the narrow portion (between the wall and the furniture) described above by the rotating rotary brush 10. Moreover, there is a possibility that the housing 2 cannot be smoothly inserted between the wall and the furniture because the detection protrusion 13 displaced to the protruding position interferes with the wall and the furniture.

  Therefore, the rib 37 positions the detection projection 13 at the non-projecting position as described above when the shutter 7 opens the auxiliary suction port 5 as shown in FIG. Even if the detection protrusion 13 is erected, the detection protrusion 13 is still in the non-projecting position, and the opening / closing member 23 opens the communication portion 16. Therefore, when the housing 2 is erected, the detection protrusion 13 at the non-projecting position does not get in the way, so that the housing 2 can be smoothly inserted between the wall and the furniture, and the rotating brush 10 (FIG. 4). Since the auxiliary suction port 5 can rotate, the dust in the narrow portion described above can be efficiently sucked. Thereby, breakage of the detection projection 13 can be prevented and cleaning can be performed without interruption.

  FIG. 8 is a perspective view of the suction tool 1 with the inside of the housing 2 exposed from the left rear side, where the opening / closing member 23 is in the open position and the detection protrusion 13 is in the non-projecting position. It shows a certain state. FIG. 9 is a perspective view of the suction tool 1 with the inside of the housing 2 exposed from the left rear side, where the opening / closing member 23 is in the closed position and the detection protrusion 13 is in the protruding position. Indicates the state.

Next, the periphery of the detection protrusion 13 will be described with reference to FIGS. 8 and 9.
In the above description, as shown in FIGS. 5 and 6 and the like, the support shaft 30 that is the rotation shaft of the detection protrusion 13 is on the rear side of the detection protrusion 13, but in FIGS. The support shaft 30 is on the front side (the right side in FIGS. 8 and 9) of the detection protrusion 13. Accordingly, the extending directions of the levers 32 to 34 of the link mechanism 31 are changed. Even in this case, when the detection projection 13 is in the non-projecting position, the opening / closing member 23 is in the open position (see FIG. 8). ) When the detection protrusion 13 is in the protruding position, the opening / closing member 23 is in the closed position (see FIG. 9).

  As shown in FIG. 8, one end 38 </ b> A of a substantially U-shaped lever 38 as viewed from the width direction is integrally provided at the left end portion (lower end portion in FIG. 8) of the support shaft 30. Therefore, the lever 38 can rotate integrally with the detection protrusion 13 and the support shaft 30 (see FIGS. 8 and 9). Here, in the housing 2, an accommodation chamber 39 in which the lever 38 is accommodated is defined on the left side of the recess 29 in which the detection protrusion 13 is disposed.

  FIG. 10 is a left side cross-sectional view of the main part of the suction tool 1 for explaining the movement of the lever 38. FIG. 10A shows the detection protrusion while the bottom surface 2A of the housing 2 faces the floor surface X from above. 13 shows a state in which it is in the protruding position, (b) shows a state in which the bottom surface 2A of the housing 2 faces the floor surface X from above, and the detection protrusion 13 is in a non-projecting position, and (c) shows that the housing 2 2 shows a state in which the detection projection 13 is in the protruding position while the top surface of 2 faces the floor surface X from above.

As shown in FIGS. 10A and 10B, the storage chamber 39 is a space slightly wider than the rotation region of the lever 38 when viewed from the width direction. A ball 40 having a size that can be fitted inside the substantially U-shaped lever 38 is disposed in the accommodation chamber 39 (see the hatched portion).
When the bottom surface 2A of the housing 2 is opposed to the floor surface X from above, the detection protrusion 13 is in the protruding position (see FIG. 10A), and the detection protrusion 13 is in the non-protruding position. Regardless of the state (see FIG. 10B), the ball 40 is fitted inside the lever 38, and in this state, the lever 38 can smoothly rotate in the accommodation chamber 39. Accordingly, in this state, the detection protrusion 13 can also smoothly rotate between the protruding position and the non-projecting position.

  However, as shown in FIG. 10 (c), the vertical direction of the housing 2 is reversed from the state of FIG. 10 (a), and the top surface of the housing 2 is not the bottom surface 2A but the top surface with respect to the floor surface X. The ball 40 is removed from the inside of the lever 38 by its own weight, and falls into the corner of the accommodation chamber 39 (the lower end in FIG. 10C). In this case, since the ball 40 exists in the rotation region of the lever 38, the lever 38 cannot rotate, and accordingly, the detection protrusion 13 cannot move from the state of the protruding position.

If the vertical direction of the housing 2 is reversed from the state shown in FIG. 10C, the ball 40 falls in the accommodation chamber 39 due to its own weight in the middle of the housing 2 and fits inside the lever 38 again (FIG. 10). Thereafter, the lever 38 and the detection projection 13 can smoothly rotate again.
FIG. 11 is a front view of the suction tool 1 according to the modification, and shows the housing 2 in cross section.

As shown in FIG. 11, in the suction tool 1 according to the modified example, the left end portion 15 </ b> A of the turbine air passage 15 communicates with the main suction air passage 14 from the right. Thereby, the communication portion 16 between the main suction air passage 14 and the turbine air passage 15 is a hole formed in the right side surface of the main suction air passage 14 (or the front end of the bend pipe 3).
The opening / closing member 23 that opens and closes the communication portion 16 is not a single plate having a longitudinal length in the width direction described above (see FIG. 5), but a pair of plates whose upper and lower portions are rounded slightly upward and downward. .

12A and 12B are left sectional views of the suction tool 1 according to the modification, in which FIG. 12A shows a state in which the housing 2 is disposed on the floor surface X, and FIG. 12B shows a housing in which the housing 2 is lifted. 2 shows a state in which the bottom surface 2A of 2 is separated from the floor surface X.
As shown in FIG. 12, in the suction tool 1 according to the modification, the roller 12 (see FIG. 3) described above is attached to the detection protrusion 13, but the detection protrusion 13 is similar to the above-described embodiment. It can be displaced (rotated about the support shaft 30) between a non-projecting position (see FIG. 12A) and a projecting position (see FIG. 12B).

FIG. 13 is a diagram illustrating the movement of the opening / closing member 23 according to the modification.
Next, with reference to FIG. 13, the movement of the opening / closing member 23 according to the modification accompanying the rotation of the detection protrusion 13 will be described.
First, with reference to FIG. 13A, the pair of opening / closing members 23 are arranged side by side on the left and right (actually front and back) in FIG. In this state, the pair of opening / closing members 23 closes the communication portion 16 (see FIG. 11) on the back side of the drawing.

FIG.13 (b) is the figure which looked at the opening-and-closing member 23 periphery of Fig.13 (a) from the top. Here, in FIG. 13, of the pair of opening / closing members 23, the left opening / closing member 23 is a first opening / closing member 23A, and the right opening / closing member 23 is a second opening / closing member 23B.
As shown in FIGS. 13 (a) and 13 (b), the left end of the first opening / closing member 23A is in the direction away from the communication portion 16 (the front side in FIG. 13 (a) and FIG. 13 (b). The first convex portion 41 is integrally provided with a convex portion (first convex portion 41) that protrudes downward, at a position biased toward the first opening / closing member 23A side (communication portion 16 side). A shaft (first shaft 42) extending vertically (in the direction perpendicular to the paper surface in FIG. 13B) is inserted and supported by the housing 2. Accordingly, the first opening / closing member 23A is rotatable about the first shaft 42, and is always urged in a direction to close the communication portion 16 by an urging member (not shown).

  And the convex part (2nd convex part 43) which protrudes in the direction away from the communication part 16 is integrally provided in the right end part of the 2nd opening-and-closing member 23B, and the 2nd convex part 43 is up and down. An extending shaft (second shaft 44) is inserted and supported by the housing 2. As a result, the second opening / closing member 23B is rotatable about the second shaft 44, and is always urged in a direction to close the communicating portion 16 by an urging member (not shown).

In this way, the pair of opening / closing members 23 is always urged so as to be positioned at the above-described closed position.
A slide plate 45 is disposed below the pair of opening / closing members 23 (the back side in FIG. 13B). In FIG. 13, the slide plate 45 is supported by the housing 2 so as to be slidable left and right.

  Referring to FIG. 13 (b), in the slide plate 45, when viewed from the sliding direction (left and right direction in FIG. 13), the first convex portion 41 of the first opening / closing member 23A (specifically, the first convex portion 41 A protrusion (first protrusion) that protrudes toward the first convex portion 41 side (the upper side, the front side in FIG. 13B) at a position that coincides with the first shaft 42 from the first opening / closing member 23 </ b> A. 46) are provided integrally.

Referring to FIG. 13B, in the slide plate 45, the second opening / closing member 23B is located at a position coincident with the right end of the second opening / closing member 23B when viewed from the sliding direction (left-right direction in FIG. 13). A protrusion (second protrusion 47) that protrudes to the right end side (upper side, front side in FIG. 13B) is integrally provided.
In the slide plate 45, a notch that penetrates the slide plate 45 in the thickness direction (the direction perpendicular to the paper surface in FIG. 13B) is sandwiched between the first protrusion 46 and the second protrusion 47. 48 is formed. In relation to the notch 48, as shown in FIG. 13A, the support shaft 30 of the detection projection 13 is integrally provided with a corner portion 49 extending perpendicularly to the support shaft 30. 49 always fits into the notch 48 from below.

As shown in FIGS. 13A and 13B, when the detection protrusion 13 is in the protruding position, the first protrusion 46 is formed on the first convex portion 41 of the first opening / closing member 23A on the slide plate 45. On the other hand, the second protrusion 47 is located on the right side with respect to the right end portion of the second opening / closing member 23B. At this time, the pair of opening / closing members 23 is in the closed position.
In this state, by disposing the housing 2 on the floor surface X described above (see FIG. 12A), the detection protrusion 13 is moved from the protruding position (see FIG. 13A) to the non-projecting position (FIG. 13A). e)) toward the counterclockwise direction in FIG. 13 (a). Along with this, the corner 49 provided on the support shaft 30 of the detection protrusion 13 moves to the left in a state of being fitted into the notch 48. Thereby, the whole slide plate 45 moves to the left side.

  As the slide plate 45 moves to the left side, the first projection 46 presses the first convex portion 41 of the first opening / closing member 23A from the right side, and the second projection 47 becomes the second opening / closing member 23B. The right end of the is pressed from the right side. As a result, as shown in FIG. 13C, the first opening / closing member 23A moves from the communicating portion 16 around the first shaft 42 against the biasing force of the biasing member (not shown) described above. It turns in the direction to leave. At the same time, the second opening / closing member 23B rotates in the direction away from the communication portion 16 about the second shaft 44 against the biasing force of the biasing member (not shown) described above. Therefore, the communication part 16 is gradually opened.

  Then, the slide plate 45 is further moved to the left by rotating the detection projection 13 to the non-projection position. As a result, as shown in FIGS. 13 (d) and 13 (e), each of the first opening / closing member 23A and the second opening / closing member 23B rotates to the full and reaches the open position, and the communication portion 16 is Fully open. In this state, when the detection protrusion 13 is rotated toward the protruding position, the slide plate 45 is slid to the right by a procedure opposite to the procedure described above, and the pair of opening and closing members 23 reach the closed position. The communication portion 16 is closed (see FIG. 13 (a) and FIG. 13 (b)).

Thus, also in the suction tool 1 which concerns on a modification, when the detection protrusion 13 is in a non-projection position, the opening-and-closing member 23 exists in an open position (refer FIG.13 (d) and FIG.13 (e)), and the detection protrusion 13 When is in the protruding position, the opening / closing member 23 is in the closed position (see FIGS. 13A and 13B).
FIG. 14 is a right side cross-sectional view of the housing 2 and shows a state in which the housing 2 is disassembled. FIG. 15 is a right side cross-sectional view of the housing 2 according to a form different from the housing 2 of FIG. 14 and shows a state in which the housing 2 is disassembled.

As shown in FIG. 14, when the maintenance in the housing 2 is performed, as described above, the belt 50 wound between the turbine pulley 20 and the brush pulley 21 is removed from the brush pulley 21 (FIG. 14). (See (a) and FIG. 14 (b)). Then, the rotating brush 10 is removed from the housing 2 (see FIG. 14B).
Here, in the housing 2, a portion forming the turbine air passage 15 is unitized with the turbine 18 and the turbine pulley 20 to constitute a turbine unit 51. The turbine unit 51 is provided with a claw 52 that engages with the housing 2 (part other than the turbine unit 51) (see FIG. 14B).

When the turbine unit 51 is twisted in the direction indicated by the thick solid arrow as shown in FIG. 14C with the belt 50 removed from the brush pulley 21 as described above, the claw 52 is detached from the housing 2. Therefore, the turbine unit 51 can be separated from the housing 2.
In FIG. 15, a relay pulley 53 is disposed between the turbine pulley 20 and the brush pulley 21, and belts are provided between the turbine pulley 20 and the relay pulley 53 and between the brush pulley 21 and the relay pulley 53. The structure which wound 50 is shown (refer Fig.15 (a)).

Also in this case, as in the case of FIG. 14, first, the belt 50 is removed from the brush pulley 21, and then the turbine unit 51 is twisted, whereby the turbine unit 51 (here, the relay pulley 53 is also included). Can be separated from the housing 2 (see FIG. 15B).
If water enters the turbine unit 51, there is a possibility that the subsequent movement of the turbine 18 may be hindered. Therefore, it is not preferable that the turbine unit 51 gets wet, but if the turbine unit 51 is separated from the housing 2 in this way, The entire portion of the suction tool 1 other than the turbine unit 51 can be washed with water.

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

It is the perspective view which looked at the vacuum cleaner suction tool 1 which concerns on one Embodiment of this invention from the right front side. 2 is a bottom view of the suction tool 1. FIG. 3 is a left side sectional view of the suction tool 1. FIG. It is the perspective view which looked at the suction tool 1 in the state where the inside of the housing 2 was exposed from the upper right side. It is the perspective view which looked at the suction tool 1 in the state where the inside of the housing 2 was exposed from the upper left side, Comprising: The opening / closing member 23 is added. It is a principal part left view for demonstrating a motion of the shutter 7, the detection protrusion 13, and the opening-and-closing member 23. FIG. FIG. 7 is a left side view of an essential part for explaining movements of a shutter, a detection protrusion, and an opening / closing member in a state different from that in FIG. It is the perspective view which looked at the suction tool 1 in the state where the inside of the housing 2 was exposed from the left rear side, Comprising: The opening-and-closing member 23 is in an open position, and the state which has the detection protrusion 13 in a non-projecting position is shown. ing. It is the perspective view which looked at the suction tool 1 in the state in which the inside of the housing 2 was exposed from the left rear side, Comprising: The state which the opening-and-closing member 23 exists in a closed position, and the detection protrusion 13 exists in a protrusion position Yes. It is principal part left sectional drawing of the suction tool 1 for demonstrating a motion of the lever 38, Comprising: (a) is the position where the detection protrusion 13 protrudes, while the bottom face 2A of the housing 2 faces the floor surface X from the top. (B) shows the state in which the bottom surface 2A of the housing 2 faces the floor surface X from above, and the detection projection 13 is in the non-projecting position, and (c) shows the top surface of the housing 2. Shows a state in which the detection projection 13 is in the protruding position while facing the floor surface X from above. It is a front view of the suction tool 1 which concerns on a modification, Comprising: The housing 2 is shown with the cross section. It is left side sectional drawing of the suction tool 1 which concerns on a modification, Comprising: (a) shows the state by which the housing 2 was arrange | positioned on the floor surface X, (b) is the bottom face 2A of the housing 2 when the housing 2 is lifted. Shows a state separated from the floor surface X. It is a figure explaining the motion of the opening-and-closing member 23 which concerns on a modification. It is a right side sectional view of housing 2, and shows signs that housing 2 is disassembled. FIG. 15 is a right side sectional view of the housing 2 according to a form different from the housing 2 of FIG. 14, showing a state in which the housing 2 is disassembled.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner suction tool 2 Housing 2A Bottom surface 3 Bend pipe 3A Front end 3B Rear end 4 Main suction port 5 Sub suction port 6 Opening 7 Shutter 10 Rotating brush 13 Detection protrusion 14 Main suction air path 15 Turbine air path 16 Communication part 18 turbine 23 opening and closing member 37 rib X floor

Claims (3)

A housing in which a main suction port is formed on the bottom surface and an opening is formed at a position different from the main suction port;
One end is connected to the housing, the other end protrudes from the housing, and a bend pipe that can be connected to a vacuum cleaner body;
A rotating brush which is rotatably provided in the housing and faces the main suction port;
A main suction air passage that is partitioned into the housing and communicates from the main suction port to one end of the bend pipe;
A turbine air passage that is partitioned separately from the main suction air passage in the housing and communicates from the opening to the main suction air passage;
A turbine that is provided in the turbine air passage, is rotated by air flowing from the opening and flowing through the turbine air passage, and rotates the rotating brush by the rotational force;
A protruding position provided on the bottom surface of the housing and protruding from the bottom surface when the bottom surface of the housing is separated from the floor surface, and a non-protruding portion which is retracted into the housing and not protruded from the bottom surface when the housing is disposed on the floor surface. A protrusion that is displaced to a position,
Opening / closing provided in a communication portion between the main suction air passage and the turbine air passage, and opens the communication portion when the projection is in the non-projecting position, and closes the communication portion when the projection is in the projection position. Members,
A vacuum cleaner suction tool characterized by comprising:   2. The vacuum cleaner suction tool according to claim 1, wherein the opening / closing member is disposed so as to substantially follow the inner surface of the main suction air passage when the communication portion is closed. 3. On the front surface of the housing, a sub suction port communicating with the main suction air passage is formed, and the rotating brush faces the main suction port and the sub suction port,
A shutter that covers the auxiliary suction port so as to be openable and closable;
A positioning member that positions the protrusion at a non-projecting position when the shutter opens the auxiliary suction port;
The vacuum cleaner suction tool according to claim 1, wherein the vacuum cleaner suction tool is included.

Images