JP5387178B2 - Vacuum cleaner suction tool - Google Patents

Description

  The present invention relates to a suction tool used for an electric vacuum cleaner.

2. Description of the Related Art Conventionally, as a vacuum cleaner suction tool for cleaning a hard flat surface such as a flooring floor, there is one that regulates one-way movement of a brushed cloth roller that wipes and polishes by contacting the floor surface.
When such a suction tool is moved in a direction in which the rotation of the raised cloth roller is restricted, the suction cloth slides on a hard flat surface such as a flooring floor in a state where the rotation of the raised cloth roller is stopped. As such, it exhibits wiping and polishing performance.
On the other hand, when the suction tool is moved in a direction in which the rotation of the raised cloth roller is not regulated, the dust attached to the raised cloth roller can be removed by contacting the scraped hair while the raised cloth roller rotates. (For example, see Patent Document 1).

In addition, there is a suction tool provided with a rotary cleaning body having a raised cloth roller that is independently driven to rotate separately from the rotary cleaning body having a blade provided at the suction port.
The rotary cleaning body having such a rotary blade of the suction tool scrapes dust buried in a carpet or the like by contacting the cleaning surface while rotating. Moreover, the rotary cleaning body which has a raising cloth roller is rotationally driven with an electric motor, and polishes a floor surface (for example, refer patent document 2).

Japanese Patent No. 3268514 (page 6, FIG. 4) JP-A-6-327598 (page 4, FIG. 2)

However, in the configuration described in Patent Document 1, the removal of the dust from the raised cloth roller is performed by causing the suction tool to advance in a direction in which the raised cloth roller is not restricted in rotation and bringing the raised cloth roller and the scraped hair into contact with each other. Done.
With such a structure, if the friction between the surface to be cleaned and the raised cloth roller is small, the raised cloth roller may roll only a few revolutions, so the dust on the raised cloth roller body cannot be removed completely There is.

In addition to the above, in the configuration described in Patent Document 2, since there is no means for removing dust adhered to the first rotary cleaning body that polishes the floor, the cleaning performance of the floor surface is rapidly deteriorated due to clogging.

The present invention has been made to solve the above problems, and provides a vacuum cleaner suction tool in which a rotating body that wipes and polishes a surface to be cleaned can exhibit a stable wiping and polishing effect. For the purpose.

The suction tool of the vacuum cleaner of the present invention includes a case provided with a suction port on a surface facing the surface to be cleaned, a suction chamber provided in the case, communicating with the suction port, and communicated with the suction chamber. A suction pipe that includes a joint pipe that is pivotably and tiltably connected, and a rotating body that is provided in the case at a position in contact with the surface to be cleaned and that is restricted from rotating in one direction but not in the opposite direction. An air passage is provided in the vicinity of the chamber, an air passage opening is provided in the case wall facing the circumferential surface of the rotating body, the air passage communicates with the suction chamber and the suction port, and the suction port tilts the joint pipe. The suction port opens when the joint pipe is tilted with respect to the surface to be cleaned so as to be larger than a predetermined angle θ1, and is closed with the outer wall of the joint pipe when tilted to be equal to or smaller than the predetermined angle θ1, The vertical dimension of the communication port of the joint pipe communicating with the chamber is the suction port. Is smaller when the is open than when it is closed .

In the suction tool of the vacuum cleaner of the present invention, the floor surface is wiped and polished in the moving direction of the suction tool that restricts the rotation of the rotating body, the forward direction, and the moving direction of the suction tool in which the rotating body rotates, in the reverse direction Dust adhering to the rotating body due to the suction airflow generated in the air passage provided between the rotating body and the case having the suction port can be efficiently removed together with the rotation of the rotating body.
Therefore, the rotating body can always keep the dust removed, and the cleaning effect of wiping and polishing the surface to be cleaned can be stabilized.

It is a perspective view which shows the whole structure of the suction tool of the vacuum cleaner in Embodiment 1 of this invention. It is a perspective view which shows the state seen from the surface (case lower surface) facing the to-be-cleaned surface of the suction tool of the vacuum cleaner in Embodiment 1 of this invention. It is a schematic diagram which shows the state which connected the suction tool of the vacuum cleaner in Embodiment 1 of this invention to the vacuum cleaner main body. It is sectional drawing of the AA cross section shown in FIG. 1 which shows the relationship between the coupling pipe and the suction opening in the state which the suction opening of the suction tool of the vacuum cleaner in Embodiment 1 of this invention opened. It is sectional drawing of the AA cross section shown in FIG. 1 which shows the relationship between the coupling pipe and the suction opening in the state which the suction opening of the suction tool of the vacuum cleaner in Embodiment 1 of this invention closed. It is sectional drawing of the AA cross section shown in FIG. 1 which shows the state which further tilted the joint pipe in the acute angle direction from the state which the suction port of the suction tool of the vacuum cleaner in Embodiment 1 of this invention closed. It is sectional drawing which shows the engagement state of the brake wheel of the suction tool of the vacuum cleaner in Embodiment 1 of this invention. It is a perspective view which shows the whole structure of the suction tool of the vacuum cleaner in Embodiment 2 of this invention. It is sectional drawing of the BB cross section shown in FIG. 8 which shows the engagement state of the brake wheel of the suction tool of the vacuum cleaner in Embodiment 2 of this invention. It is sectional drawing of the BB cross section shown in FIG. 8 which shows the disengagement state of the brake wheel of the suction tool of the vacuum cleaner in Embodiment 2 of this invention.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing the overall configuration of the vacuum cleaner suction tool according to Embodiment 1 of the present invention, and FIG. 2 is a surface facing the surface to be cleaned of the vacuum cleaner suction tool according to Embodiment 1 of the present invention. FIG. 3 is a schematic view showing a state in which the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention is connected to the main body of the vacuum cleaner, and FIG. 4 is a view of the present invention. Sectional drawing of the AA cross section shown in FIG. 1 which shows the relationship between the joint pipe and the suction opening in the state which the suction opening of the suction tool of the vacuum cleaner in Embodiment 1 opened, FIG. 5: is implementation of this invention Sectional drawing of the AA cross section shown in FIG. 1 which shows the relationship between the joint pipe and the suction opening in the state which the suction opening of the suction tool of the vacuum cleaner in form 1 closed, FIG. 6 is Embodiment 1 of this invention The joint pipe was tilted further in an acute angle from the state where the suction port of the suction tool of the vacuum cleaner was closed Sectional view of A-A cross section shown in FIG. 1 showing the FIG. 7 is a sectional view showing an engagement state of the brake wheel of the electric vacuum cleaner suction tool according to the first embodiment of the present invention.

In the respective drawings, the same or corresponding parts are denoted by the same reference numerals, and a part of the description is omitted. In addition, when explaining the common contents of a plurality of members with “a, b, etc.” added to the reference sign, “a, b, etc.” attached to the reference sign is deleted, The members will be described.

  Based on FIGS. 1-2, the structure of the suction tool of the vacuum cleaner in Embodiment 1 of this invention is demonstrated. As shown in FIGS. 1 to 2, the case 10 of the suction tool main body 100 includes a lower case 11 and an upper case 12, and the lower case 11 is provided on a case lower surface 13 that is a surface facing the surface to be cleaned S. A suction port 15 for sucking dust present on the cleaned surface S is provided. Then, a joint pipe 40 provided at one end with a connecting portion 41 for connecting an extension pipe 104 and a suction tool main body 100 to be described later is provided with a lower case 11 and an upper case 12 at an attachment portion 14 formed at the other end. Are sandwiched and connected to be tiltable at a predetermined angle.

A rotating brush 20 is pivotally supported in the case 10 so as to protrude from the suction port 15 toward the surface to be cleaned S. The rotary brush 20 is embedded in a cylindrical member 21 having a plurality of spiral grooves formed on the peripheral surface, a rotary brush rotary shaft 22 provided at both ends of the cylindrical member 21, and the spiral groove. The bristle brush 23 is configured. Here, the bristle brush 23 may be a blade-shaped member made of an elastic body such as rubber, and since there is no relation in the present invention, it can be appropriately selected.

The rotary brush 20 is driven between a rotary shaft (not shown) of a rotary brush motor (not shown) provided in the case 10 and a rotary shaft 22 of the rotary brush 20 (not shown). )) And is driven to rotate by rotating the electric motor for the rotating brush with the electric power supplied from the vacuum cleaner main body 101, which will be described later. The dust is swept away from the non-cleaning surface S, sucked from the suction port 15, and not cleaned. Dust removal from the surface S is made more reliable.

Then, first wheels 18 a and 18 b and a second wheel 19 are provided on the case lower surface 13 so as to protrude from the case lower surface 13 toward the surface to be cleaned S. The first wheels 18a and 18b are supported at a predetermined distance from the non-cleaning surface S so that the rotating brush 20 is at an appropriate position with respect to the non-cleaning surface S. Therefore, since the rotary brush 20 works properly and a predetermined distance from the non-cleaning surface S can be secured, the suction tool main body 100 can be moved smoothly. Here, the first wheels 18a and 18b may use sliding members made of brushed cloth instead of wheels, and are not relevant in the present invention, and can be appropriately selected.

The second wheel 19 is supported by the case lower surface 13 so as to be able to protrude and retract. When the suction tool main body 100 is lifted from the non-cleaning surface S, the second wheel 19 protrudes from the case lower surface 13 and sucks into the non-cleaning surface S. In a state where the tool body 100 is placed, the tool body 100 is immersed in the lower surface 13. A switch (not shown) for turning on and off the rotation drive of the rotary brush is provided in the case 10 in conjunction with the protrusions and depressions, the suction tool main body 100 is placed on the non-cleaning surface S, and the second surface is placed on the case lower surface 13. The switch is turned on when the wheel 19 is submerged, and the switch is turned off when the suction tool body 100 is lifted from the non-cleaning surface S and the second wheel 19 protrudes from the case lower surface 13.

A rotating body 30 is pivotally supported on the case lower surface 13 so as to protrude from the case lower surface 13 toward the surface to be cleaned S. The rotating body 30 has a brushed cloth 32 attached to the peripheral surface of the cylindrical member 31 with less irregularities on the peripheral surface, and the rotating body holding portions 33a and 33b provided at both ends of the cylindrical member 31 are rotating shafts for the rotating body. 34 is configured to pass through.

The rotating body is configured to be restricted from rotating in one direction by a brake wheel 60 described later. In the configuration of the first embodiment of the present invention, the suction tool main body 100 is moved in the advancing forward direction F. When the suction tool main body 100 is moved in the advancing and retreating direction R, the restriction is not applied. Therefore, when the suction tool main body 100 is moved in the advancing and advancing direction F, the rotating body 30 does not rotate, and the raised cloth 32 affixed to the peripheral surface becomes in a frictional state with the non-cleaning surface S, and the non-cleaning surface S For example, if a hard surface such as flooring is used, wiping and polishing are performed, and if a soft surface such as a carpet, dust is rubbed.

Next, based on FIG. 3, the structure of the vacuum cleaner to which the suction tool main body 100 was connected is demonstrated. As shown in FIG. 3, one end portion of the hose 102 is connected to the electric vacuum cleaner main body 101, and one end portion of the grip portion 103 is connected to the other end portion of the hose 102. An operation unit 104 is provided in the vicinity of the grip unit 103, and can be operated to switch between strong, medium, and weak vacuum cleaners, power on / off, rotary brush on / off, and the like. Further, one end of the extension pipe 105 is connected to the other end of the grip 103, the other end of the extension pipe 105 and the connection 41 of the joint pipe 40 are connected, and the suction tool main body 100 is connected. It becomes the structure of the vacuum cleaner that can.
Further, an electric blower 106 and a dust collecting unit 107 are provided in the electric vacuum cleaner main body 101.

Furthermore, based on FIG. 4, the internal structure of the suction tool main body 100 is demonstrated. As shown in FIG. 4, a suction chamber 16 that communicates with a suction port 15 provided in the case lower surface 13 is provided inside the case 10, and communicates with the joint pipe 40 through the communication port 17.

An air passage opening 51 is provided in the lower case wall surface 50 facing the peripheral surface to which the raised cloth 32 of the rotating body 30 is attached, and an air passage 52 is provided below the suction chamber 16. The air passage 52 communicates with the suction chamber 16 and the suction port 53.

Next, based on FIG. 7, the structure which controls rotation of the rotary body 30 is demonstrated. As shown in FIG. 7, a wedge-shaped space 70 is formed in the case 10 by an inclined wall 71. In the wedge-shaped space 70, a braking wheel 60 is held by a braking wheel holder 61 at a position where it engages with the inclined wall 71 and the peripheral surface of the rotating body holding portion 33 of the rotating body 30.

In this state, when the suction tool main body 100 is moved in the traveling forward direction F, the rotating body 30 tries to rotate in the clockwise direction, but the braking wheel 60 is engaged with the peripheral surface of the rotating body holding portion 33. Therefore, the braking wheel 60 is pulled down below the wedge-shaped space 70, and the force pressed against the narrowing of the inclined wall 71 is exerted, and the rotation of the braking wheel 60 is restricted, so that the engagement relationship is established. The rotation of the rotating body 30 is also restricted.

Conversely, when the suction tool main body 100 is moved in the forward and backward direction R, the rotating body 30 rotates in the counterclockwise direction, and the braking wheel 60 moves upward in the wedge-shaped space 70 and the inclined wall 71 is widened. Therefore, the rotation of the braking wheel 60 is not restricted, and therefore the rotation of the rotating body 30 in the engagement relationship is freely restricted without being restricted.

About the suction tool of the vacuum cleaner in Embodiment 1 of this invention comprised as mentioned above, operation | movement in the state connected to the vacuum cleaner by FIG.3 and FIG.4 to FIG.7 is demonstrated.

  As shown in FIG. 4, the bristle brush 23 of the rotary brush 20 is in contact with the non-cleaning surface S. In this state, for example, when the strong switch is turned on at the operation unit 104 shown in FIG. 3, the electric blower 106 provided in the vacuum cleaner body 101 is driven, and the air flow in the direction in which air is sucked into the vacuum cleaner body 101. Is generated, the pressure in the vicinity of the suction port 15 becomes negative, and the dust present on the non-cleaning surface S starts to be sucked and cleaning is started. Further, when the on / off switch of the rotating brush is turned on, the rotating brush 20 is rotated forward with respect to the advancing forward direction F, and dust existing on the non-cleaning surface S toward the suction chamber 16 is removed. It is easy to inhale dust because it is swept up and scraped.

Further, the rotating body 30 is also in contact with the non-cleaning surface S. Since the rotary body 30 is restricted when the suction tool main body 100 is moved in the forward movement direction F, the rotary body 30 does not rotate when the suction tool main body 100 is moved in the forward movement direction F. The brushed cloth 32 affixed to the peripheral surface is in a frictional state with the non-cleaning surface S. If the non-cleaning surface S is a hard surface such as a flooring so that dust is attached to the brushed cloth 32, wiping and polishing are performed. If it is a soft surface such as a carpet, scrape the dust.

  The suction chamber 16 and the air passage 52 communicate with each other through the suction port 53, but the suction port 53 is not always open and may be in a state of being blocked by the outer wall of the joint pipe 40. In FIG. 4, the joint pipe 40 is tilted with respect to the non-cleaning surface S at an angle θ1, for example, about 55 to 60 degrees, but when the angle θ1 or more is reached, the suction port 53 is opened and the joint pipe 40 is opened. The open state is maintained even if the angle 40 is tilted up to a limit angle, for example, 90 degrees.

  When the suction port 53 is in the open state, the suction air flow in the direction of sucking air into the electric vacuum cleaner main body 101 passes through the air channel 52 from the air channel opening 51 and is sucked into the suction chamber 16 through the suction port 53. A suction airflow is generated. The suction airflow causes a force in a direction to peel off dust adhering to the raised cloth 32 affixed to the peripheral surface of the rotator 30, and the dust is pulled from the raised cloth 32 affixed to the peripheral surface of the rotator 30. It becomes possible to peel off and remove.

The removed dust passes through the air passage opening 51 through the air passage 52, is sucked into the suction chamber 16 through the suction port 53, and is provided in the electric vacuum cleaner main body 101 together with the dust sucked in from the suction port 15. For example, it is housed in a dust collecting unit 107 such as a paper pack.

As shown in FIGS. 5 and 6, when the joint pipe 40 is in an angle θ2 or angle θ3 smaller than the angle θ1 with respect to the non-cleaning surface S, the suction port 53 is blocked by the outer wall of the joint pipe 40. Therefore, the force in the direction of peeling off the dust attached to the raised cloth 32 attached to the peripheral surface of the rotating body 30 does not work.

As shown in FIG. 4, when the joint pipe 40 is at an angle θ1 or more with respect to the non-cleaning surface S, the suction port 53 opens, so that dust adhering to the raised cloth 32 attached to the peripheral surface of the rotating body 30 is removed. At this time, the vertical direction dimension of the communication port 17 is also linked to the tilt angle of the joint pipe 40, P1 when the angle θ1, and P2 when the angle θ2 When θ3, it changes as P3.

Compared with the vertical dimensions P2 and P3 of the communication port 17 when the suction port 53 is not open, the vertical size P1 of the communication port 17 when the suction port 53 is open is smaller, and P1 <P2 <P3. As a result, the suction airflow from the suction port 15 is limited, and the suction airflow from the suction port 53 flows. Therefore, the suction airflow that peels off dust from the raised cloth 32 attached to the peripheral surface of the rotating body 30. Can be secured.

Then, when the gripping portion 103 is gripped and the electric vacuum cleaner is operated, when the suction tool main body 100 is moved in the advancing forward direction F, the joint pipe 40 is at an angle θ1 with respect to the non-cleaning surface S. If the suction tool main body 100 is moved in the advancing and retreating direction R, the joint pipe 40 tends to have an angle θ1 or more with respect to the non-cleaning surface S.

Therefore, when the rotation of the rotating body 30 is restricted and the raised cloth 32 attached to the peripheral surface of the rotating body 30 is in a wiped and polished state with respect to the non-cleaning surface S, the rotating body 30 is attached to the peripheral surface of the rotating body 30. The suction airflow that peels off the dust from the attached raised cloth 32 is less likely to occur, and when the rotation of the rotating body 30 is not restricted, the dust is peeled off from the raised cloth 32 attached to the peripheral surface of the rotating body 30. Since the suction airflow is easily generated, the brushed fabric 32 attached to the peripheral surface of the rotating body 30 receives the suction airflow while rotating, and therefore can receive the suction airflow that peels off dust in the entire circumferential direction. it can.

When the rotating body 30 is regulated by the above configuration and operation, it is said that if the non-cleaning surface S is a hard surface such as flooring, it is wiped and polished, and if it is a soft surface such as a carpet, dust is scraped off. This can be reliably performed, and is attached to the peripheral surface of the rotating body 30 by a suction airflow in a direction of passing through the air passage 52 from the air passage opening 51 and passing through the air inlet 53 to the suction chamber 16. When the force in the direction of peeling off the dust attached to the raised cloth 32 works and the rotating body 30 is not regulated, a suction force can be applied to the entire circumference of the raised cloth 32 attached to the peripheral surface of the rotating body 30. Therefore, it becomes possible to peel off and remove dust from the entire circumference of the brushed cloth 32, and the performance of wiping and polishing the brushed cloth 32 affixed to the peripheral surface of the rotating body 30 or scraping dust can be improved. Can recover while It is possible to achieve the effect of.

In the present embodiment, the rotary brush is driven by an electric motor, but a turbine brush that uses the suction airflow of an electric blower may be used and is not relevant in the present invention, and can be selected as appropriate. In this embodiment, the rotating brush is provided. However, even if the rotating brush is not provided, there is no relationship in the present invention, and the same effect can be obtained.

Embodiment 2. FIG.
FIG. 8 is a perspective view showing the overall configuration of the suction tool of the vacuum cleaner according to the second embodiment of the present invention, and FIG. 9 shows the engagement state of the brake wheel of the suction tool of the vacuum cleaner according to the second embodiment of the present invention. 8 is a cross-sectional view taken along the line BB shown in FIG. 8, and FIG. 10 is a cross-sectional view taken along the line BB shown in FIG. 8 showing the disengagement state of the brake wheel of the suction tool of the vacuum cleaner according to Embodiment 2 of the present invention. FIG.
Based on FIGS. 8-10, the structure and operation | movement of the suction tool of the vacuum cleaner in Embodiment 2 of this invention are demonstrated.

As shown in FIG. 8, a hole 92 is provided in the upper case 91 constituting the case 90 of the suction tool main body 200, and an operation portion of the operation lever 80 provided in the case 90 penetrates and protrudes. The operation lever 80 is interlocked with the brake wheel holder 81 as shown in FIGS. 9 and 10, and when the operation lever 80 is tilted in the forward and backward direction R side, the interlock with the brake wheel holder 81 is released, and the spring The braking wheel 60 is engaged with the peripheral surface of the rotating body holding portion 33 by the force of 82, and the rotation of the rotating body 30 in one direction is restricted.

On the other hand, when the operation lever 80 is tilted in the traveling forward direction F side, the brake wheel holder 81 is lifted against the force of the spring 82 and the engagement between the brake wheel 60 and the peripheral surface of the rotating body holding portion 33 is released. Thus, the restriction of the rotating body 30 is released, and the rotating body 30 can freely rotate in either direction.

With the above configuration, when the non-cleaning surface S is a soft surface such as a carpet that does not require wiping and polishing, the operation lever 80 is tilted in a direction to release the regulation of the rotating body 30. Thus, since the rotating body 30 rotates regardless of whether the suction tool main body 200 is moved in the forward / backward direction F or the forward / backward direction R, the suction tool main body 200 can be smoothly moved and the joint pipe 40 is not When the angle θ1 is greater than or equal to the cleaning surface S, the dust can be peeled off and removed from the raised cloth 32 affixed to the peripheral surface of the rotating body 30 in the same manner as in the first embodiment. The effect that the performance which scrapes off the dust of the raised cloth 32 stuck on the peripheral surface of the body 30 is recovered can be achieved.

The suction tool of the vacuum cleaner of this invention can be widely utilized for the vacuum cleaner provided with a suction tool by the above thing.

S non-cleaning surface, F forward / reverse direction, R forward / backward direction, communication port vertical dimension at P1 θ1, communication port vertical dimension at P2 θ2, communication port vertical dimension at P3 θ3
10 Case, 11 Lower case, 12 Upper case, 13 Case lower surface, 14 Mounting part, 15 Suction port, 16 Suction chamber, 17 Communication port, 18 (a, b) 1st wheel, 19 2nd wheel, 20 rotations Brush, 21 Cylindrical member, 22 Rotary shaft for rotating brush, 23 Bristle brush, 30 Rotating body, 31 Cylindrical member, 32 Brushed fabric, 33 (a, b) Rotating body holding part, 34 Rotating shaft for rotating body, 40 Joint pipe, 41 connection portion, 50 lower case wall surface, 51 air passage opening, 52 air passage, 53 suction port, 60 braking wheel, 61 braking wheel holder, 70 wedge-shaped space, 71 inclined wall, 80 operation lever, 81 braking wheel Holder, 82 Spring, 90 Case, 91 Upper Case, 92 Hole, 100 Suction Tool Body, 101 Vacuum Cleaner Body, 102 Hose, 103 Gripping Unit, 104 Operation Unit, 105 Extension Pipe, 106 Electric Blower, 107 Collection Department, 200 suction tool body

Claims (9)

A case with a suction port on the surface facing the surface to be cleaned;
A suction chamber provided in the case and in communication with the suction port;
A joint pipe communicating with the suction chamber and connected to the case so as to be rotatable and tiltable;
A rotating body that is provided in the case at a position in contact with the surface to be cleaned, the rotation in one direction is restricted, and the rotation in the reverse direction is not restricted, and
An air passage is provided close to the suction chamber, an air passage opening is provided in the case wall surface facing the rotating body peripheral surface, and the air passage communicates with the suction chamber at the suction port,
The suction port is opened and closed by tilting the joint pipe ,
The suction port is opened when the joint pipe is tilted to be larger than a predetermined angle θ1 with respect to the surface to be cleaned, and is closed by the joint pipe outer wall when tilted to be equal to or smaller than the predetermined angle θ1.
The suction tool of the vacuum cleaner , wherein a dimension of the communication port of the joint pipe communicating with the suction chamber is smaller in the vertical direction when the suction port is open than when the suction port is closed. .   The suction tool of the vacuum cleaner according to claim 1, wherein the longitudinal dimension of the air passage opening is the same as or longer than the longitudinal direction of the rotating body. Old claim 5
The rotating body is a cylindrical shape, the suction of the vacuum cleaner according to claim 1 or claim 2, characterized in that is provided with raised fabric in the rotating body peripheral surface in contact with the surface to be cleaned Ingredients. Old claim 6
The rotating body is restricted rotation when moving the suction tool in the forward direction, according to any one of claims 1 to 3 is rotated when moved to the reverse direction, characterized in that unregulated Vacuum cleaner suction tool. Said rotation restriction of the rotating body 1 to claim characterized in that it is performed by the braking wheel disposed to engage the rotating member holding portion peripheral surface provided on the rotating body peripheral surface or said rotating body suction tool of the electric vacuum cleaner according to any one of claims 4. It has an operation part that is housed in the case and has one end projecting to the outside, and the braking wheel is disengaged from the engaging surface with the rotating member peripheral surface or the rotating member holding unit peripheral surface provided in the rotating member. 6. The vacuum cleaner suction tool according to claim 5, further comprising disengagement means for maintaining the disengagement direction. The suction tool for an electric vacuum cleaner according to claim 6 , wherein the rotating body released from the engagement by the disengagement means is not restricted from rotating in any direction. An electric blower for sucking dust, a main body provided with a dust collecting part for containing dust, and
A hose connected to the body;
A handle for routing connected to the hose;
An operation unit provided in the vicinity of the gripping unit for operating on / off of the electric blower, and the like;
An extension pipe connected to the grip part,
Vacuum cleaner, characterized in that it comprises a suction unit of the vacuum cleaner according to any one of claims 1 to claim 7. An electric blower for sucking dust, a main body provided with a dust collecting part for containing dust, and
A hose connected to the body;
A handle for routing connected to the hose;
An operation unit provided in the vicinity of the gripping unit for operating on / off of the electric blower, and the like;
An electric vacuum cleaner comprising an extension pipe connected to the gripping part,
A case with a suction port on the surface facing the surface to be cleaned;
A suction chamber provided in the case and in communication with the suction port;
A joint pipe communicating with the suction chamber and connected to the case so as to be rotatable and tiltable;
A rotating body that is provided in the case at a position in contact with the surface to be cleaned, the rotation in one direction is restricted, and the rotation in the reverse direction is not restricted, and
An air passage is provided close to the suction chamber, an air passage opening is provided in the case wall surface facing the rotating body peripheral surface, and the air passage communicates with the suction chamber at the suction port,
The suction port is opened and closed by tilting the joint pipe ,
The vertical dimension of the communication port of the joint pipe communicating with the suction chamber is provided with a vacuum cleaner suction tool that is smaller when the suction port is open than when the suction port is closed ,
An electric vacuum cleaner in which an air flow in a suction direction is generated from the communicating suction chamber to the peripheral surface of the rotating body when the electric blower is driven when the suction port is open.

Images