JP6503918B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to an electric vacuum cleaner using a blow nozzle, which is a part from which blow air blows.

Conventionally, an electric blower for generating suction force for suctioning dust inside the main body is provided, and a hose for guiding dust to the main body to an exhaust unit for exhausting the air flow generated by the electric blower to the outside of the main body There is a vacuum cleaner having a blower function capable of connecting the connection pipe of the air conditioner and using the exhaust flow discharged from the main body as the air flow of the blow.
In such a conventional vacuum cleaner, blow wind is blown out from a floor nozzle (floor surface suction tool) or the like which is connected to a hose or extension pipe leading the suctioned dust to the main body or an extension pipe and sucks dust from the floor surface. (See, for example, Patent Document 1).

Patent No. 5636743 gazette

In the conventional configuration, a hose, an extension pipe, or a floor nozzle used to blow blow air has a flow of air containing dust or foreign matter during the operation of sucking in dust, so that the sucked dust or dust accumulates. There is a possibility that foreign matter may be caught inside by suctioning foreign matter.
Therefore, there has been a problem that accumulated dust particles and foreign matter caught on these parts are mixed with blow wind and blown out to the outside at the time of blow operation.

  The present invention has been made to solve the problems as described above, and when using a vacuum cleaner as a blower, a blow nozzle capable of preventing foreign matter from popping out, and a vacuum cleaner using the blow nozzle. Intended to provide.

The electric vacuum cleaner according to the present invention has a main body having a hose connected with a handle at hand, an electric blower, a suction port for taking in air containing dust, and an exhaust for discharging air. it is possible to suck the Chiri挨to the body portion by connecting a hose to a suction plug mouth, the electric vacuum which can be used as a blower capable of blowing dust挨by connecting a hose to the exhaust port in machine, when used as a blower, blower nozzles connected to the proximal handle member is formed of a member of a cylindrical shape forming a flow path through which blow air is air flow inside the flow inside the tubular member A restricting portion for narrowing the path is provided, and the restricting portion extends toward the downstream where the blow air flows, and the tubular member surrounds the restricting portion and is a shape that is narrowed toward the downstream where the air flows. This Accordingly, it is possible to solve the problem.

  ADVANTAGE OF THE INVENTION According to this invention, when using a vacuum cleaner as a blower, it is possible to provide the vacuum nozzle which can prevent that a foreign material is mixed with a blow wind and jumping out, and a vacuum cleaner using this blow nozzle. It is.

General perspective view of the vacuum cleaner The perspective view which looked at the vacuum cleaner body from the back The perspective view which saw the state which connected the hose 3 to the exhaust port of the vacuum cleaner main body from the back The perspective view which shows the state which attached the blow nozzle to the hand handle body The perspective view which shows the state which attached the blow nozzle to the extension pipe Perspective view of blow nozzle AA cross section of FIG. 6 The perspective view which shows the state which attached the blow nozzle to the extension pipe Sectional drawing in the attachment position of the blow nozzle of FIG. 8 (BB sectional drawing)

Hereinafter, an embodiment will be described with reference to FIGS. 1 to 9.
First, the vacuum cleaner 1 will be described with reference to FIG. Drawing 1 is a figure showing electric vacuum cleaner 1 in an embodiment.
The vacuum cleaner 1 shown in FIG. 1 has a form for sucking dust from the floor surface. The electric vacuum cleaner 1 is provided with a main body (vacuum cleaner main body) 2, a hose 3, a hand handle body 4, an extension pipe 5, and a floor surface suction tool 6.
The floor suction device 6 is a portion for taking in dirt (dust) on the floor together with air from an opening formed downward. A joint portion 70 connected to the extension pipe 5 is provided at an end of the floor suction device 6 on the intake side.

Next, the extension pipe 5 has a generally cylindrical shape as a whole. One end of the extension pipe 5 is connected to the joint 70 of the floor suction device 6 and the other end is connected to the hand handle 4.
The user can remove the floor surface suction tool 6 from the extension pipe 5 by operating the release button 5 a provided on the suction side of the extension pipe 5. In addition, the user can extend and contract the extension pipe 5 by operating the expansion button 5 b provided at the exhaust-side end of the extension pipe 5.

Next, the hand handle body 4 has a shape in which an arched handle 4 b is provided on a pipe 4 a connected to the extension pipe 5. The intake side end of the pipe 4 a is connected to the exhaust side end of the extension pipe 5.
That is, the hand handle body 4 is a part held by the user when cleaning, and is a part to be an operation body. When suctioning dust, the user holds the handle 4b of the hand handle body 4 and operates the hand handle body 4 to draw the floor suction tool 6 close to dust located on the surface to be cleaned. Do.
Further, the user can remove the extension tube 5 from the hand handle body 4 by operating the release button 4 c provided on the hand handle body 4.

Next, the hose 3 consists of a hollow member whose main part is a flexible bellows-like shape. The suction-side end of the hose 3 is connected to a pipe 4 a constituting the hand handle body 4. The hose 3 has a rigid connection 3 a at the end on the exhaust side, and the connection 3 a is connected to the main body 2.
In addition, in the state of FIG. 1, it has connected to the suction inlet 2a opened to the main body 2. As shown in FIG. The suction port 2 a is an opening through which air (dust-containing air) including dust sucked from the floor surface suction tool 6 enters the inside of the main body 2.

  The main body 2 is connected to the connection portion 3 a of the hose 3, and sends dusty air to the dust collection portion 2 b provided in the main body 2. In the dust collection unit 2b, air and dust are separated and dust is held. The main body 2 discharges air (clean air) from which dust has been removed from an exhaust port 2c that opens to the rear. The dust separated from the air is collected inside the dust collection unit 2b.

As described above, by connecting each part, a series of steps from the floor suction device 6 and the extension tube 5 to the hand handle body 4, the hose 3, the main body 2 (the dust collection portion), and the exhaust port 2c. An air path F1 is formed. The air passage F1 is an air passage for collecting dust.
In addition, the connection part 3a of the hose 3 is connected to the exhaust port 2c similarly to the intake port 2b, and it is comprised so that the exhaust port 2c and the hose 3 may connect.

Next, the main body 2 includes the electric blower 2d and the dust collection unit 2b inside.
The electric blower 2d generates an air flow which flows downward from the floor suction tool 6 on the suction side toward the exhaust port 2c in the air passage F1 formed in the electric vacuum cleaner 1.
When the electric blower 11 performs the suction operation, the dust on the floor is sucked into the floor suction tool 6 together with the air. The dust-containing air sucked into the floor suction device 6 is sent to the main body 2 through the floor suction device 6, the extension pipe 5, the tube 4a of the hand handle 4 and the hose 3 respectively.

The dust collection unit 2 b separates the dust that has flowed into the inside of the main body 2 from the air (air flow). The dust collection unit 2b collects the dust separated from the air. As the dust collection unit 2b, a cyclone type or a paper pack type is used.
Further, the main body 2 is provided with large wheels 2e on both sides, and small wheels 2f on the lower surface. The small wheel 13b is attached so that the direction can be freely changed. Thereby, the main body 2 can change direction in the state which the large sized wheel 2e and the small sized wheel 2f contacted the floor surface.

Next, the exhaust port 2c will be described.
Referring to FIGS. 2 to 3, the exhaust port 2 c is located on the rear surface of the main body 2. The exhaust port 2c is formed in a cylindrical shape extending in the front-rear direction, and a grid 2g is provided on the front side so as to block the opening. The inner shape of the exhaust port 2 c is configured to be connectable to the connection portion 3 a of the hose 3.
In a state where the connection portion 3a is connected to the exhaust port 2c, the hose 3 and the exhaust port 2c form a series of spaces, and the exhaust gas which is the air flow discharged from the exhaust port 2c flows into the inside of the hose 3.

Thereby, referring to FIGS. 4 to 5, since the air flow of the exhaust can be introduced to the hose 3, the tube 4 a of the handle body 4 to which the hose 3 is attached or the extension pipe to the handle body 4 When 5 is attached, by attaching the blow nozzle 10, which is an attachment for the blower, to the extension pipe 5, it becomes possible to blow the exhaust flow from the blow nozzle 10 as an air flow suitable for the blower.
Therefore, by comprising as mentioned above, while being able to use the vacuum cleaner 1 as a cleaner which attracts | sucks and collects dust, it can be used also as a blower which flies dust by the airflow which blows off.

Next, the blow nozzle 10 which is an essential part of the present invention will be described.
Referring to FIGS. 6 to 7, the blow nozzle 10 has a cylindrical shape having an open front end and a rear end. The opening at the front end is the front opening 10a, and the opening at the rear end is the rear opening 10b. A space from the rear opening 10b to the front opening 10a is a blow-like air path.
In addition, the blow nozzle 10 is provided with a rib 11 which annularly surrounds the outer peripheral surface.

A connecting portion 12 is formed at a portion of the blow nozzle 10 from the rib 11 to the rear opening 10b. The connection portion 12 is a portion where the extension pipe 5 and the blow nozzle 10 are connected when the extension pipe 5 is attached to the pipe body 4 a of the hand handle body 4 or the hand handle body 4.
The connecting portion 12 is formed with a guide 12 a that protrudes long in the front-rear direction, an engagement recess 12 b whose surface is recessed, and a holding opening 12 c which is an opening that penetrates.

Next, the outer shape of the blow nozzle 10 on the front side of the rib 11 has a tapered shape that narrows from the rib 11 to the front opening 10a. The inner shape from the rib 11 to the front opening 10a is a narrowed shape along the outer shape.
Furthermore, inside the blow nozzle 10, a regulating portion 13 is provided. In the case of the present embodiment, the restricting portion 13 is provided inside the blow nozzle 10 and at a position close to the front opening 10 a.

The restricting portion 13 narrows the opening area of the front opening 10a to be the air path of the blow wind, and spreads forward (spreads to the downstream of the flow of the blow wind) the restricting body 12a, and the restricting body 13a It is comprised from the connection rib 13b which connects the opening edge of the front opening 10a.
The restricting body 13a of the present embodiment has a shape in which the apex is directed rearward and the front is expanded. That is, at the position of the restricting body 13a, the air path is gradually narrowed as it goes forward.
And the extended end of regulation object 13a and the opening edge of front opening 10a are connected by connection rib 13b. In the case of the present embodiment, the shape of the restricting body 13a is a conical shape that spreads forward with the apex facing rearward.

The blow nozzle 10 in which each part is configured as described above is used as follows.
First, the blow nozzle 10 is connected to the connection opening 4 d of the pipe 4 a of the handle body 4 or, when the extension pipe 5 is attached to the handle body 4, the connection portion 12 to the connection opening 5 d of the extension pipe 5. By being inserted, it is attached to the pipe 4 a or the extension pipe 5.
At this time, the guide 12a of the blow nozzle 10 is guided by a guide receiver (not shown) provided inside the connection opening 4d of the tube 4a or inside the connection opening 5d of the extension pipe 5 to make the blow nozzle 10 Is guided to a predetermined mounting position.

The position of the blow nozzle 10 is determined by the rib 11 abutting against the opening edge of the connection opening 4 d of the tube 4 a or the opening edge of the connection opening 5 d of the extension tube 5. In this state, an engagement claw (not shown) provided at the connection opening of the pipe 4a or the extension pipe 5 enters the engagement recess 12b of the blow nozzle 10, whereby the blow nozzle 10 is prevented from coming off. .
The blow nozzle 10 can be removed by releasing the engagement by operating the release button 4 c provided on the hand handle 4 or the release button 5 a provided on the extension pipe 5.

As described above, by connecting the connection 3a of the hose 3 to the exhaust port 2c and operating the electric blower in a state where the blow nozzle 10 is connected to the connection opening of the pipe 4a or the extension pipe 5, the exhaust air Is blown out from the blow nozzle 10.
At this time, since the restricting portion 13 which narrows the opening area of the front opening 10 a is located at the front opening 10 a of the blow nozzle 10, the restricting portion 13 can capture foreign matter mixed in the blowing air.
In particular, since the hose 3 is used also for suctioning dust (cleaner function), foreign matter may be caught. It is particularly effective in the embodiment of the present invention in which such a hose 3 is commonly used in blowing. is there.

Further, since the restricting portion 13 is provided, the air passage of the air passing through the inside of the nozzle 13 is reduced, and the air is discharged from the opening 15. Thereby, the wind speed of the blow wind can be accelerated and larger dust can be blown away. In addition, air can be discharged to a wider range than when the air passage is reduced without providing the restricting portion 13.
Furthermore, since the restriction portion 13 has a conical shape that spreads forward, which is also the direction of blowing blow wind, the air passage inside the blow nozzle 10 is gradually reduced, thereby reducing pressure loss due to air passage contraction. It can be done.
Furthermore, the air flow passing through can be rectified by the connection rib 13b, whereby the air flow noise of the discharged air can be reduced.

In addition to the above embodiment, by providing the filter (not shown) together with the restricting portion 13 in the portion leading to the front opening 10a inside the blow nozzle 10, it is possible to prevent the further projection of foreign matter.
In the present embodiment, the restriction portion 13 is formed in the conical shape as described above, but if it is not aimed at the rectification effect or the soundproof effect of the blow wind, the blowout of foreign matter is also performed as a grid member or a mesh member. Can be prevented

Next, the storage state of the blow nozzle 10 will be described.
As shown in FIGS. 5 and 8 to 9, an engaging portion 50 is provided on the side surface of the extension pipe 5.
The engaging portion 50 has an L-shape, one end of which is connected to the side surface of the extension pipe 5, extends in the longitudinal direction of the extension pipe 5, and bends the tip toward the extension pipe 5 side. It is formed.

The blow nozzle 10 is attached to the engaging portion 50 configured as described above as follows.
The blow nozzle 10 is attached to the engagement portion 50 so that the engagement claw 51 enters from the rear opening 10 b. The engagement claws 51 are inserted into the holding opening 12 c formed in the blow nozzle 10 from the inside of the blow nozzle 10, and the engagement claws 51 are engaged with the holding opening 12 c, and the blow nozzle 10 is attached to the side surface of the extension pipe 5. .

As a result, when the user wants to use the blow function, the blow nozzle 10 can be prepared promptly. Furthermore, since the holding opening 12 c is formed in the connection portion 12 of the blow nozzle 10,
Even when the shape of the holding opening 12c is a through hole, air may leak from the holding opening 12c because the holding opening 12c is located inside the extension tube 5 or the tube 4a of the handle body 4 when using the blow function. There is no
In addition, although the engaging part 50 for hold | maintaining the blow nozzle 10 was demonstrated by the example provided in the extension pipe | tube 5, you may provide in the hand handle 4. As shown in FIG.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner, 2 main body, 3 hose, 4 hand handle body, 5 extension pipe, 6 floor suction tool, 10 blow nozzle, 13 control part

Claims (5)

With the hose which connected the hand handle body,
The electric fan has a built-in suction port for taking in air containing dust, and a main body having an exhaust port for discharging air.
It is possible to suction dust inside the main body by connecting the hose to the suction port, and use as a blower capable of blowing off dust by connecting the hose to the exhaust port. In the vacuum cleaner that can
When used as a blower, a blower nozzle connected to said proximal handle member is formed of a member of a cylindrical shape forming a flow path through which blow air is air flow therein, the flow inside the cylindrical shape of the member A restriction section is provided to narrow the road ,
The restriction section extends toward the downstream side of the blow wind,
The cylinder-shaped member is shaped to surround the restriction portion and to be narrowed toward the downstream of the blowing air .   The vacuum cleaner according to claim 1, wherein the restriction portion is attached to the blower nozzle by a plurality of ribs.   The vacuum cleaner according to claim 1, wherein a filter is provided inside the blower nozzle together with a restricting portion. An extension pipe can be connected to the hand handle body , and the blower nozzle is indirectly connected to the hand handle body by connecting to the extension pipe . The vacuum cleaner as described in one term . The blower nozzle, the hand handle body also has a connecting portion connecting the prolongation tube,
Wherein the connecting portion, according to any one of claims 1 to 4, characterized in that the retaining aperture for engagement portion engages provided in the proximal handle body or the extension tube is provided with Vacuum cleaner.