JPH0550936B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides an electric vacuum cleaner in which a suction port body equipped with a rotating brush driven by an electric motor can be connected to a vacuum cleaner body via a hose and an extension pipe. The present invention relates to the structure of the connecting portion of the hose, extension pipe, and suction port.

(Prior art) Conventionally, a rotating brush driven by an electric motor is provided on the suction port connected to a vacuum cleaner body with a built-in electric blower via a hose and an extension pipe, and this rotating brush removes dust from the carpet, etc. A vacuum cleaner is known that has a structure in which dust is scraped out and sucked in, and is guided to a dust collection chamber of the cleaner body via a hose and an extension pipe.

In this type of vacuum cleaner, power is supplied from the vacuum cleaner body to the electric motor of the suction port body, so for example, Japanese Utility Model Publication No. 58-23322, Japanese Utility Model Publication No. 58-23321, and Japanese Unexamined Patent Publication No. 51-7759 , Jitsukō 58-23323
As described in Japanese Utility Model Publication No. 54-109363, a structure is adopted in which one power supply cord is held along the outer peripheral surface of the extension tube and the hose or extension tube. However, with this structure, since the cord is located outside the extension pipe, there are problems in that the cord gets in the way during cleaning and also looks bad.

In addition, if the length of the cord is set according to the case where the suction port body is connected to the hose via two extension pipes, the length of the cord is set according to the case where the suction port body is connected to the hose via one extension pipe. Alternatively, when the suction port body is directly connected to the hose, there is a problem in that the play in the cord becomes large and the cord becomes even more of a nuisance.

Furthermore, in particular, the vacuum cleaner described in Japanese Utility Model Application Publication No. 54-109363 has different connection structures between the hose and the extension pipe, between the extension pipes, and between the extension pipe and the suction port, and also has a locking structure. Since these structures are different from each other, it is impossible to use this structure by directly connecting the suction port to the hose, for example.

In addition, as described in Japanese Patent Application Laid-open No. 56-68420, there is a hose that has one end connected to the suction port and a grip tube having a connection part at the other end, and a hose that can be attached and detached from the connection part of the grip tube. An extension pipe having a main body side connection part that is freely connected at one end and a suction side connection part at the other end, and a connection part that is detachably connected to the suction side connection part of the extension pipe and rotates. In a vacuum cleaner equipped with a brush and a suction port body provided with an electric motor for driving the rotating brush, cords for feeding power from the vacuum cleaner body to the electric motor of the suction port body are installed in the hose and the extension pipe, respectively; A structure is known in which connectors are provided at both ends of the grip tube, the extension tube, and at the connection portions of the suction port, respectively, and are detachably connected to each other and relay the cord.

(Problems to be Solved by the Invention) As mentioned above, in the conventional vacuum cleaner having the structure described in Japanese Utility Model Application Publication No. 54-109363, connection structures such as a hose and an extension pipe, and an extension pipe and a suction port body, etc. However, it may not be possible to connect the suction port directly to the hose, and even if the structure allows the suction port to be connected directly to the hose, the power supply cord is originally designed to be held along the outer circumferential surface of the extension pipe, so if you try to connect the suction port directly to the hose, the cord will have a lot of play, and this cord will get in the way during cleaning. A problem arose.

In addition, in the vacuum cleaner having the structure described in Japanese Patent Application Laid-open No. 56-68420, one end of the extension tube has a tapered connection part whose diameter decreases toward the end, and the other end has a tapered connection part that decreases in diameter toward the end. Since the structure has a tapered connection part whose diameter increases in the direction of If it is too long, there is a problem that the connector connection becomes uncertain or a connection failure occurs.

In addition, a device in which a locking device and a locking operation part are provided at a side position of the connection part of the grip pipe, extension pipe, or suction port body has also been devised, but this structure During cleaning, this locking operation part may hit furniture or walls, causing the locking state to be released by mistake, and the locking operation part may be difficult to see and difficult to operate. There was a problem.

The present invention aims to solve these problems by providing two or one suction port to the hose.
It can be connected via a book extension tube or directly connected, and in any of the above usage conditions, the power supply cord will not get in the way of cleaning. In addition, by providing the locking operation part of the locking device on the top side of the connection part of the grip pipe and the suction side connection part of the extension pipe, the electrical connection by the connector can be ensured, and especially the suction port body can be connected securely. By not providing a locking operation part, but providing it at the connection part of the grip tube and the suction side connection part of the extension tube, there is no need to operate the locking operation part on the suction port side in a narrow place, and the grip tube or extension tube can be easily connected. The locking operation part can be operated while gripping with the dominant hand, making it easy to operate, and the locking state will not be released even if the locking operation part hits furniture or walls while cleaning. The company provides vacuum cleaners.

(Means for Solving the Problems) The vacuum cleaner of the present invention has a built-in electric blower, is provided with a dust collection chamber inside that communicates with the electric blower, and has a suction port that communicates the dust collection chamber with the outside. a vacuum cleaner body provided; a hose having one end connected to the suction port and a grip tube having a connection portion provided at the other end; and a main body side connection portion removably connected to the connection portion of the grip tube. an extension pipe having one end and a suction side connection part at the other end; a connection part removably connected to the suction side connection part of the extension pipe; a rotating brush; and an electric motor for driving the rotating brush. The hose and the extension tube each have a cord for supplying power from the vacuum cleaner body to the electric motor of the suction port body, and the grip tube, both ends of the extension tube and the suction port body are connected to each other. A connector is provided at each connection part to be detachably connected to each other and relay the cord, and the connection part of the grip pipe and the suction side connection part of the extension pipe are made the same shape, and the connection part of the extension pipe on the main body side and the connection part of the extension pipe are made the same shape. The connector of the grip tube and the connector of the suction side connection part of the extension tube are made the same shape, and the connector of the body side connection part of the extension tube and the suction port body are made the same shape. The same shape as the connector is provided, and the same locking mechanism locks the main body side connection part of the extension pipe and the suction port body connection part on the upper surface side of the connection part of the grip pipe and the suction side connection part of the extension pipe. Each device is provided with a locking operation section.

(Function) In the vacuum cleaner of the present invention, the main body side connection part of the extension pipe can be connected to the connection part of the grip pipe, and the connection part of the suction port body can be connected to the suction side connection part of the extension pipe. , Due to the shape of the connection part, the connection part of the suction port body can be connected to the connection part of the grip pipe, and the main body side connection part of another extension pipe can be connected to the suction side connection part of the extension pipe. be. In each of the above connections, a pair of connectors provided at the connecting portions that are connected to each other are also connected due to the shape of the connectors. Therefore, when cleaning the floor, for example, the suction port body can be connected to the hose via two extension pipes, and when cleaning the top of a desk, etc., the extension pipe can be used. The suction port body can be connected through only one hose, or the suction port body can be connected directly to a hose. The rotating brush can be rotated by supplying electricity. Furthermore, since the power supply cords are housed inside the hose and the extension tube, there is no play in the cords, and the cords do not get in the way during cleaning. In addition, since the locking operation part of the locking device is provided at the connection part of the grip pipe and the suction side connection part of the extension pipe, compared to the structure where only the fitting connection is made of the tapered connection part, the electrical connection by the connector is In particular, the locking operation part is not provided on the suction port body, but is provided at the connection part of the grip tube and the suction side connection part of the extension pipe, so that the locking operation part can be installed on the suction port body side in narrow places. There is no need to operate the locking operation part, and the locking operation part can be operated while holding the grip tube or extension tube with the dominant hand.Furthermore, since the locking operation part is provided on the top side of the connection part, the locking operation part is easily visible. Operability can be improved. Furthermore, since the locking operation part is provided on the top side of the connection part, the locking state will not be released due to the locking operation part hitting furniture or walls during cleaning, and even if the connection part Even if the locking operation part installed on the top surface hits the bottom side of the table top, etc., if the locking operation part hits the bottom side of the top plate, etc., it means that the grip tube is being operated in the direction of pushing. This means that the locked connection will not become disconnected.

(Embodiment) Next, the configuration of an embodiment of the vacuum cleaner of the present invention will be described with reference to FIGS. 1 to 6.

In FIG. 1, 1 is a vacuum cleaner main body, and an electric blower (not shown) is disposed inside the vacuum cleaner main body 1, and a dust collection chamber (not shown) that communicates with the electric blower is installed inside the vacuum cleaner main body 1. ) is formed. Further, a suction port 2 is formed at the front of the upper surface of the cleaner main body 1 so as to face the dust collection chamber.

6 is a hose, and a bellows-shaped hose body 7 that can be bent freely
a connecting pipe 8 provided at one end of the hose body 7 and connected to the suction port 2 of the vacuum cleaner main body 1; and a bent cylindrical grip tube 9 provided at the other end of the hose body 7. It is made up of. And the third
As shown in the figure, the outer circumferential surface of the proximal end of a tapered outer tube 10 is fitted and fixed to the inner circumferential surface of the distal end of the grip tube 9, and the tapered outer tube 10 is connected from the proximal end to the distal end. The diameter is expanded in a tapered shape toward. Also,
A grip tube cover body 11 is fixed to the upper side of the outer peripheral surface of the grip tube 9 with screws 12, while the cover body 1 is fixed to the lower side of the outer peripheral surface of the distal end of the grip tube 9.
A cover portion 13 that is continuous with the portion 1 is formed. The tapered outer tube 10, the tip of the cover body 11, and the cover portion 13 constitute a connecting portion 14.

Further, a variable resistor 15 and a switch 16 for controlling the suction force of the electric blower are supported and fixed in a space between the cover body 11 and the outer circumferential surface of the grip tube 9. A slider 17 for operating the variable resistor 15 on the top surface
and a knob 18 for operating the switch 16.
and are each slidably supported. Also,
The variable resistor 15 and the switch 16 are connected to the cleaning via a cord inserted into a cord passage 19 formed between the outer peripheral surface of the grip tube 9 and the cover body 11 and embedded in the hose body 7. It is electrically connected to a control circuit and a power supply circuit in the machine body 1, respectively.

Reference numeral 21 denotes an extension tube, which has a substantially cylindrical main tube 22 formed by profile extrusion molding or the like, and a cord passage 23 is integrally formed in the outer peripheral surface of this main tube 22 in the axial direction. As shown in FIG. 4, the outer circumferential surface of the proximal end of the tapered inner tube 24 is fitted and fixed to the inner circumferential surface of one end of the main tube 22. The diameter is tapered from the end toward the tip, and can be detachably fitted into the tapered outer tube 10 of the grip tube 9.
Further, the inner circumferential surface of the proximal end of a cylindrical body-side cover body 25 is fitted and fixed to the outer circumferential surface of one end of the main pipe 22, and the distal end of the cover body 25 is formed to have a larger diameter. It has the same diameter as the cover body 11 and cover portion 13 of the grip tube 9. The tapered inner tube 24 and the main body side cover body 25 constitute a main body side connecting portion 26.

On the other hand, the outer circumferential surface of the proximal end of a tapered outer tube 27 having the same shape as the tapered outer tube 10 of the grip tube 9 is fitted and fixed to the inner circumferential surface of the other end of the main tube 22 . Further, the inner circumferential surface of the proximal end of a cylindrical suction side cover body 28 is fitted and fixed to the outer circumferential surface of the other end of the main pipe 22, and the distal end side of this cover body 28 has a larger diameter. and has the same diameter as the tip end side of the main body side cover body 25. The tapered outer pipe 27 and the suction side cover body 28 are connected to the suction side connecting portion 2.
9.

31 is a suction port body, with a dust suction port (not shown) on the bottom surface.
is formed with an opening. And this suction port body 3
1, a rotary brush 32 is rotatably provided facing the dust suction port, and an electric motor 33 for driving the rotary brush 32 is provided inside the rotary brush 32, as shown in FIG. That is, a belt 36 for transmitting rotation is stretched between a pulley 34 fixed to the rotating shaft of the electric motor 33 and a pulley 35 fixed to the rotating brush 32. Further, at the rear of the suction port body 31, a rotary tube 37 communicating with the dust suction port is rotatably provided, and the rear side, that is, the tip side of the rotary tube 37 is connected to the tip side of the tapered inner tube 24. It is formed in a tapered inner tube portion 38 having the same shape. Furthermore, a cylindrical suction port cover body 39 having the same diameter as the tip sides of the cover bodies 25 and 28 is fixed to the outer circumferential surface of the tapered inner tube portion 38. The tapered inner tube portion 38 and the cover body 39 constitute a connecting portion 40.

That is, the connecting portion 14 of the grip tube 9 and the suction side connecting portion 29 of the extension tube 21 have the same shape, and the main body side of the extension tube 21 is detachably connected to the connecting portions 14 and 29. Connection part 26
and the connecting portion 40 of the suction port body 31 have the same shape.

Further, as shown in FIG. 3, the grip tube 9 has a power supply side connector 41 clamped and fixed to the outer peripheral surface of the grip tube 9 and the inner peripheral surface of the cover part 13. Power supply (not shown)
is electrically connected via a cord 42 to a switch 16 that turns the electric motor 33 on and off.

In addition, in the extension tube 21, as shown in FIG. Outer tube 2
A power supply side connector 44 is clamped and fixed to the outer circumferential surface of 7 and the inner circumferential surface of the suction side cover body 28, and electrodes (not shown) of these connectors 43 and 44
are electrically connected to each other by a cord 45 inserted into the cord passage 23 of the main pipe 22.

Furthermore, as shown in FIG. 6, the suction port body 31 has a power receiving side connector 46 clamped and fixed to the outer circumferential surface of the rotary tube 37 and the inner circumferential surface of the cover body 39, and the electrodes of this connector 46 (not shown)
is the cover body 3 that passes through the inside of the cover body 39.
This suction port body 31 is connected by a cord 47 that exits from the upper side of 9 and is introduced into the suction port body 31.
It is electrically connected to a circuit that drives the electric motor 33 inside. The reason why the cord 47 is led out from the upper side of the cover body 39 is to prevent the cord 47 from coming into contact with the floor surface and to prevent damage to the cord 47.

Then, the power supply side connector 41 of the grip tube 9
and the power supply side connector 44 of the suction side connection part 29 of the extension pipe 21 have the same shape, and the main body side connection part 26 of the extension pipe 21 is detachably connected to these power supply side connectors 41 and 44. The power receiving side connector 43 and the power receiving side connector 46 of the suction port body 31 have the same shape.

Further, the connection parts 14 and 2 connected to each other
6, 29, 40, both connecting parts 14, 26, 2
A locking device 51 of the same structure is provided for locking 9 and 40.

Next, regarding this locking device 51, the extension tube 21
This will be explained using FIG. 5 as an example.

A plate spring-like elastic body 52 is provided along the circumferential direction between the tapered outer tube 27 and the suction side cover body 28 and has a substantially C-shaped front view. A push button portion 53 as a locking operation portion is formed in the center of the elastic body 52, and the push button portion 53 can move upwardly and backwardly through an insertion hole 54 formed in the suction side cover body 28. It is prominent. Furthermore, a pair of locking protrusions 55 are formed on the inner circumferential surface of the elastic body 52, and the locking protrusions 55 are opposed to each other with the center interposed therebetween. A tapered portion is formed so as to be inclined in the direction of moving away from each other. Furthermore, through holes 56 are formed in the tapered outer tube 27 at symmetrical positions sandwiching its central axis, and the locking protrusions 55 are inserted into these through holes 56 so as to be freely retractable and protrude inward. ing. on the other hand,
On the outer peripheral surface of the tapered inner tube 24, locking recesses 57, into which the locking protrusions 55 are engaged and disengaged, are formed at symmetrical positions across the central axis thereof.

Similarly, the connecting portion 14 of the grip tube 9 also has a locking operation portion projecting upward through a locking protrusion 59 penetrated through the through hole 58 of the tapered outer tube 10 and an insertion hole 60 of the cover body 11. An elastic body 62 having a push button part 61 as a
A locking recess 63 is formed in the rotary tube 37 .

Next, the operation of this embodiment will be explained.

When cleaning floors, etc., follow the instructions in Figures 1 and 2.
As shown in the figure, the main body side connection part 26 of the extension tube 21 is connected to the connection part 14 of the grip tube 9, and this extension tube 2
The main body side connection part 26 of another extension pipe 21 having the same structure as this extension pipe 21 is connected to the suction side connection part 29 of the first extension pipe 21, and the suction port body 31 is connected to the suction side connection part 29 of this extension pipe 21. 40 is connected.

At that time, the connection parts 14, 26, which are connected to each other,
At 29 and 40, the tapered outer tubes 10 and 27 and the tapered inner tube 24 or the tapered inner tube portion 38 are tapered fitted, and the tips of the grip tube cover body 11 and the cover portion 13 or the suction side cover body 28 are connected to the main body. The end of the side cover body 26 or the suction port cover body 39 abuts against each other. For example, when connecting the extension tubes 21, the tapered portions of the locking protrusions 55 are first pressed against the tapered inner tube 24, and the elastic body 52 is deformed in the direction in which the locking protrusions 55 are separated. Next, when the through hole 56 of the tapered outer tube 27 overlaps with the locking recess 57 of the tapered inner tube 24, the locking protrusion 55 is engaged with the locking recess 57 by the bias of the elastic body 52, and both extension tubes 21 is locked. Similarly, at the connection parts 14 and 26 between the grip tube 9 and the extension tube 21, the locking protrusion 59 on the grip tube 9 side is engaged with the locking recess 57 on the extension tube 21 side, and the extension tube 21 and the suction port At the connecting portions 29 and 40 with the body 31, the extension tube 21
The locking protrusion 55 on the side is connected to the locking recess 6 on the suction port body 31 side.
3.

Further, when the connecting portions 14, 26, 29, and 40 are connected, the connectors 41, 43, 44, and 46 are also connected at the same time. At this time, since the connection is made by the locking device 51, the connectors 41, 43, 44, 4
6 connection is ensured.

When cleaning, the user holds the grip tube 9 of the hose 6 and moves the suction port body 31 over a surface to be cleaned such as a carpet. And connectors 41, 43,
Codes 42, 45, relayed by 44, 46
47, power is supplied from the vacuum cleaner body 1 to the electric motor 33 of the suction port body 31, and this electric motor 33 rotates the rotating brush 32, scraping up dust from the carpet etc. When the electric blower is driven, the scraped up dust and dust are sucked in through the dust suction port of the suction port body 31, and the dust is sucked into the extension pipe 2.
1 and a hose 6 to the dust collection chamber of the cleaner body 1.

At this time, the cords 42 and 45 that run along the particularly long hose 6 and extension tube 21 are internally housed in the hose 6 and extension tube 21, so they do not get in the way of cleaning and have a good appearance.

For example, when removing the extension tube 21, first press the push button 53 with your dominant hand holding the extension tube 21 to deform the elastic body 52 in the direction in which both of the locking protrusions 55 separate, thereby locking them. The engagement between the protrusion 55 and the locking recess 57 of the tapered inner tube 24 is released. In this state, both extension tubes 21 are pulled in the direction away from each other, and the tapered outer tube 27 is moved away from the tapered inner tube 24.
Remove. Similarly, while pushing the push buttons 61 and 53, the grip tube 9 and the extension tube 21, and the extension tube 21 and the suction port body 31 can be removed from each other.

At this time, since the push button parts 53 and 61 are provided at the connection part 14 of the grip tube 9 and the main body side connection part 26 of the extension tube 21, that is, the push button parts 53 and 61 are provided at the connection part 14, 26, 29, and 40 connected to each other. Since it is located on the cleaner body 1 side, that is, on the front side, and also on the upper surface side, it is easy to operate with the dominant hand and is convenient to use.

In addition, as each connection part 14, 26, 29, 40 is removed, connectors 41, 43, 44, 46
will also come off at the same time. In this way, the connection parts 14, 2
Since the connectors 41, 43, 44, and 46 are electrically attached and detached along with the mechanical attachment and detachment of the connectors 6, 29, and 40, no extra effort is required for the attachment and detachment work.

In addition, since the connection part 14 and connector 41 of the grip tube 9 and the connection part 40 and connector 46 of the suction port body 31 are shaped so that they can be connected, it is possible to clean the desk top etc. as shown in FIG. When doing so, the suction port body 31 can be directly connected to the grip tube 9 for use. In this case, the grip tube 9
The locking protrusion 55 is engaged with the locking recess 63 of the rotary tube 37 of the suction port body 31.

As shown in FIG. 8, a suction port body 31 can also be connected to the grip tube 9 through one extension tube 21 for use.

In this way, according to the configuration of the above embodiment, two or one extension pipe 2 can be used depending on the cleaning location, etc.
1 or connect the suction port body 31 directly to the grip tube 9.
Allows for efficient cleaning. Moreover, cords 42 and 45 are installed inside the hose 6 and extension tube 21, respectively, and these cords 42 and 45 are connected to the connector 4.
1, 43, 44, and 46, the rotating brush 32 can be used in any usage mode.
can be rotated as well as code 4
There is no play between the cords 42 and 45, and the cords 42 and 45 do not interfere with cleaning.

(Effects of the Invention) According to the present invention, the hose and the extension pipe are each equipped with a power supply cord, and the connection part of the grip pipe of the hose, the suction side connection part of the extension pipe, and the main body side connection part of the extension pipe are connected to each other. The connecting parts of the suction port body are made to have the same shape, and the connectors that relay the cord are the connector of the grip pipe and the connector of the suction side connection part of the extension pipe, and the connector of the main body side connection part of the extension pipe and the connector of the suction port body. Since each connector has the same shape, it can be used not only by connecting the suction port body to the hose via two extension pipes, but also by connecting it via only one extension pipe, or by connecting it to the hose via two extension pipes. It can be used by directly connecting the suction port, and the rotating brush of the suction port can be driven in each of the above usage modes, allowing you to select the appropriate usage mode depending on the cleaning location, etc., making it easy to use. In addition, there is no play in the cord in any usage mode, and the cord does not get in the way during cleaning.

In addition, since the locking operation part of the locking device is provided at the connection part of the grip pipe and the suction side connection part of the extension pipe, compared to the structure where only the fitting connection is made of the tapered connection part, the electrical connection by the connector is In particular, by not providing a locking operation part on the suction port body, but providing it at the connection part of the grip tube and the suction side connection part of the extension pipe, it is possible to connect the locking operation part on the suction port body side in narrow places. There is no need to operate the locking operation part, and you can easily operate the locking operation part while holding the grip tube or extension tube with your dominant hand.Moreover, since the locking operation part is provided on the top side of the connection part, the locking operation part is not visible. Operability can be easily improved. Furthermore, since the locking operation part is provided on the top side of the connection part, the locking state will not be released due to the locking operation part hitting furniture or walls during cleaning.
Even if the locking operation part provided on the top surface of the connection part hits the bottom side of the table top, etc., if the locking operation part hits the bottom side of the top plate, etc., operate the grip tube in the direction that pushes it. The connection section that is in the locked state will not become disconnected.

[Brief explanation of the drawing]

FIG. 1 is an overall side view showing an embodiment of the vacuum cleaner of the present invention, FIG. 2 is a perspective view of the grip tube, extension tube, and suction port body, and FIG. 3 is a sectional view of the grip tube. Fig. 4 is a sectional view of the extension pipe as above, Fig. 5 is a sectional view taken from the side in Fig. 2 of the above, Fig. 6 is a partially cut side view of the suction port body as above, and Fig. 7 and 8 are used. FIG. 3 is an action explanatory side view showing the state. 1...Vacuum cleaner body, 2...Suction port, 6...Hose, 9
...Grip tube, 14...Connection part, 21...Extension tube, 26...
Main body side connection part, 29... Suction side connection part, 31... Suction port body, 32... Rotating brush, 33... Electric motor, 40...
Connection part, 41, 43, 44, 46... connector,
42, 45, 47...cord, 51...locking device, 5
3, 61...Push button section as a locking operation section.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner body, which has a built-in electric blower and a dust collection chamber that communicates with the electric blower, and has a suction port that communicates the dust collection chamber with the outside; One end of the hose is connected and the other end is provided with a grip tube that has a connection part, and one end has a main body side connection part that is detachably connected to the connection part of the grip tube, and the other end has a suction side connection part. The hose comprises an extension pipe at an end thereof, and a suction port body having a connection part detachably connected to a suction side connection part of the extension pipe, and provided with a rotating brush and an electric motor for driving the rotating brush, A cord for feeding power from the vacuum cleaner body to the electric motor of the suction port body is installed in the and extension tube, and the cords are detachably connected to each connection part of the grip tube, both ends of the extension tube, and the suction port body. Connectors are provided to relay the cords, the connecting portion of the grip tube and the suction side connecting portion of the extension tube are made the same shape, and the body side connecting portion of the extension tube and the connecting portion of the suction port body are made the same shape. At the same time, the connector of the grip tube and the connector of the suction side connection part of the extension tube are made the same shape, the connector of the main body side connection part of the extension tube and the connector of the suction port body are made the same shape, and the connector of the grip tube is made the same shape. A locking operation part of the same locking device for locking the main body side connection part of the extension pipe and the connection part of the suction port body is provided on the upper surface side of the connection part and the suction side connection part of the extension pipe, respectively. A vacuum cleaner featuring