JP3186032B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner comprising a vacuum cleaner main body, a suction hose, a handle at hand, a connecting pipe, and a mouthpiece, and more particularly to a vacuum cleaner excellent in storage and transportability. It is about the machine.

[0002]

2. Description of the Related Art Vacuum cleaners that are currently widely used are:
A vacuum cleaner body having a blower for sucking dust into the dust collection chamber, a flexible suction hose having one end attached to the vacuum cleaner body and communicating with the blower, and a second end of the suction hose. A canister-type canister comprising: a handle attached to the blower, which communicates with the blower; a connection pipe attached to the handle, which communicates with the suction hose; and a mouthpiece attached to the connection pipe, which communicates with the connection pipe. It is a vacuum cleaner.

[0003] In this canister type vacuum cleaner, the user operates the floor surface in a standing posture by the user holding the handle at hand and operating the mouthpiece through the connection pipe. In addition, the vacuum cleaner main body can be routed through the suction hose to perform a wide range of cleaning comfortably.

In this conventional example, since the main body of the vacuum cleaner is composed of a plurality of irregularly shaped parts, various storage methods have been conventionally proposed.

[0005] The most mainstream method at present is to store the entire body in a vertical position without disconnecting the connection. Specifically, first, stand the back part of the main body so as to be in contact with the floor surface, further remove the fixing of the extendable connecting pipe, shorten its length, and hold it in the vertical posture with the mouthpiece below and the handle at the top. , To be attached to the bottom side of the vacuum cleaner body. In this mounting method, a projection provided at the end of the connection pipe on the mouth body side is inserted into a recess provided at the tip of the vacuum cleaner main body.

[0006] The connecting pipe used in these conventional examples is composed of two pipes, an outer pipe and an inner pipe, and the outer pipe is provided with a locking recess formed along the longitudinal direction of the inner pipe. It is structured to be fixed at any position via a stopper.

[0007] The prior art, for example, JP-8 - 191
781, JP-A No. 9 - is described in 56648 JP.

[0008]

According to the conventional vacuum cleaner, a plurality of components can be stored in a vertical position without being disassembled, so that they can be used immediately when desired and the installation property can be improved. .

However, there are the following problems. (1) First, the operation of erecting the vacuum cleaner body must be performed in a crouching posture or a crouching posture. (It is not recommended to stand up through a suction hose.) (2) The conventional connecting pipe is made to be able to expand and contract by sliding two pipes of different diameters. You have to manipulate and adjust its length with both hands. In use, the length of the connecting pipe must be adjusted using both hands.

(3) Next, in a crouching posture or a crouching posture, the connecting pipe must be attached to the bottom side of the vacuum cleaner main body by holding down the vacuum cleaner main body in the vertical posture. (4) Conveying is prohibited in this vertical storage position, and the vacuum cleaner main body and the connecting pipe must be separated and disassembled and held in a bent position or bent position.

As described above, the conventional vacuum cleaner has to take a crouching posture or a crouching posture at the time of storing or transporting, and the user is forced to take an unreasonable posture. By solving the problem, it is expected that the vacuum cleaner will be easier to use.

It is an object of the present invention to provide a vacuum cleaner in which the length of a connecting pipe can be adjusted by a simple operation and the length can be fixed.

Another object of the present invention is to provide a vacuum cleaner having a connecting pipe length adjusting mechanism having excellent operability.

[0014]

To achieve the above object, a vacuum cleaner according to the present invention comprises a vacuum cleaner body provided with a blower for sucking dust , and a hose mounting portion of the vacuum cleaner body. An attached connecting body, a flexible suction hose having one end attached to the connecting body and communicating with the blower, a hand handle attached to the other end of the suction hose, and a handle attached to the hand handle. A connection pipe communicating with the suction hose, and a mouthpiece attached to the connection pipe, a hose mounting portion for detachably attaching the connection body to a distal end of the vacuum cleaner main body,
The connection pipe has a first pipe body having a transport path formed at one end thereof detachably connected to the hand handle, and one end connected to the first pipe body and the other end connected to the mouthpiece. A second tube to be connected, wherein the hand handle is
Means and first transmission means coupled to the operating means.
And, wherein the first tube is provided with a second transmission means for releasing the fixed state of the fixing means and said fixing means for fixing the second pipe to the first tube, the first transmitting means and the second transmission means, said coupled by hand handle and connecting said connection tube is configured to release the fixed state of the fixing means by operation of said operating means, before
Serial when the second maximum stroke of the tube, a sealing mechanism sealing effect is maximum between the second tube and the first tube, the first tube and the second tube Between and before
The second tube is in a state other than at the time of the maximum stroke.
Is slidably engaged with the first tube by its own weight.
It is characterized by having a relationship .

Another feature of the present invention is that in the vacuum cleaner, the second tube has a large-diameter portion provided at an end opposite to the mouthpiece, and the first tube is provided. Is provided with a seal corresponding to the large diameter portion at the distal end, and when the second pipe connecting pipe extends to the maximum stroke, the large diameter portion comes into contact with the seal and substantially sucks air. It is characterized in that it is configured to block.

According to the present invention, it is possible to provide a vacuum cleaner which can adjust the length of the connecting pipe by a simple operation and has a connecting pipe length adjusting mechanism which is excellent in operability.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 and 2 are external perspective views of a vacuum cleaner according to an embodiment of the present invention, FIGS. 3 to 9 are explanatory views of a hand handle, FIGS. 10 to 14 are explanatory views of a connecting pipe, and FIG. FIG. 17 is an explanatory view of a connection state between a sub-handle and a suction hose, FIG. 17 is an explanatory view of attaching a connecting pipe to the sub-handle, FIG. 18 is an explanatory view of a connecting pipe position holding means, and FIG.

First, a schematic structure of a vacuum cleaner according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an external view showing a vertical storage posture of the vacuum cleaner, and FIG.
FIG. 4 is a perspective view showing a normal cleaning posture.

In FIGS. 1 and 2, a vacuum cleaner generally designated by reference numeral 1 is a vacuum cleaner body 100 having a mechanism (not shown) for sucking dust into a dust collecting chamber, such as a blower. A coupling body (hereinafter, referred to as a sub-handle portion) 600 attached to the hose attachment portion 101 of the vacuum cleaner main body 100, a flexible suction hose 200 having one end attached to the sub-handle portion 600 and communicating with the blower; A hand handle 300 attached to the other end of the suction hose 200 and communicating with the blower, a connection pipe 400 attached to the hand handle 300 and communicating with the suction hose 200, and attached to the connection pipe 400; Suction body 500 communicating with connection pipe 400
It is composed of

In this embodiment, the sub handle 6
00 is a main body mounting mechanism 610 for mounting the vacuum cleaner main body 100, a hose mounting mechanism 620 for mounting the suction hose 200, and dust connecting the vacuum cleaner main body 100 and the suction hose 200. By providing a passage 630, a connection pipe mounting mechanism 640 for holding the connection pipe 400, and a handle 660 for holding the sub handle 600 by a user, a general vacuum cleaner can be stored. And the vacuum cleaner 1 excellent in transportability.

For example, in this embodiment, the traveling means 1
2, and can be pulled by the suction hose 200 attached to the hose attachment portion 101 in the cleaning posture shown in FIG. 2. Furthermore, from this cleaning posture, FIG.
Can be changed to a vertical storage position in which the hose mounting portion 101 is positioned upward by rotating the traveling means 102 in the direction of the arrow Z about the rotation center as shown in FIG. Properties can be further improved.

That is, in this embodiment, in the cleaning posture shown in FIG. 2, the vacuum cleaner main body 100 and the suction hose 200 are connected by the sub handle portion 600 to secure a dust passage 630, and the suction hose 200 can be used for pulling travel. Further, the handle portion 660 is provided on the sub handle portion 600 so as to protrude upward in the cleaning posture. For this reason,
You can easily change your posture. That is, the handle portion 6
60, the distal end of the vacuum cleaner main body 100 provided with the hose mounting portion 101 is positioned from the position close to the floor surface with the rear end of the vacuum cleaner main body 100 supported by the traveling means 102 as a fulcrum. The cleaning position can be easily changed from the cleaning position to the vertical storage position by easily lifting up to the upper position.

The handle portion 660 is provided at one end with the dust passage 630, and at the other end is provided with a connection pipe mounting mechanism 640 for the connection pipe 400. With this structure, the connecting pipe mounting mechanism 640 is located at the upper part in the vertical storage posture, so that the user can attach the connecting pipe 400 to the connecting pipe mounting mechanism 640 at a position close to the line of sight.
Can be easily attached.

In this embodiment, the connection pipe 4
Reference numeral 00 denotes a structure that can be expanded and contracted by housing the second connection pipe 440 in the first connection pipe 420, and the mounting portion 401 is provided below the first connection pipe 420. Further, the vacuum cleaner main body 100 is provided with a connection pipe position holding means 140 for the connection pipe 400 on the upper surface. Accordingly, in the vertical storage posture, the vacuum cleaner main body 100 can be attached so as to carry the connection pipe 400.

Further, the connecting pipe 400 is provided with a locking mechanism for the connecting pipe expanding / contracting mechanism 402, and the hand handle 300 is provided with a trigger switch 301 as operating means for releasing and locking the locking mechanism. I have. Thereby, the connection pipe 40 can be operated by the operation of the hand handle 300.
Since the expansion and contraction of the connection pipe 400 can be adjusted, the connection pipe 400 is cleaned while the length of the connection pipe 400 is reduced by operating the trigger switch 301 with the vacuum cleaner main body 100 in the vertical storage position. It can be attached to the machine main body 100 so as to be carried on its back.

The connecting pipe mounting mechanism 640 has means for maintaining the connection state of the connecting pipe 400 with the mounting section 401. As a minimum function, the holding means may be held to such an extent that the vertical storage attitude is maintained, or may be held firmly. In the present embodiment, the holding means is provided with a holding means for disconnecting the connection state due to the weight of the vacuum cleaner main body 100 when the connection pipe 400 is to be pulled upward in the storage posture. In this embodiment, the connecting pipe mounting mechanism 640 and the mounting section 4 of the connecting pipe 400
01 is formed of a resin, and utilizing the friction and strain of the contact surface, the connection state is maintained in a state where the connection surface is pulled obliquely,
The coefficient of friction of the contact surface is set so that the connection state is released for the force for lifting the vacuum cleaner main body 100 upward. In addition, a lock mechanism satisfying the above conditions may be provided. These specific solutions will be described in detail later.

As described above, according to the present embodiment, the vertical storage posture can be easily taken by connecting the vacuum cleaner main body 100 and the connection pipe 400 via the sub handle portion 600.
This vertical storage posture can be maintained. In this embodiment, the vacuum cleaner main body 100 and the connection pipe 400 are separately held on both sides of the handle portion 660, and the vacuum cleaner 1 in the vertical storage position is held through the handle portion 660 as it is. Can be lifted with one hand. Thus, the load applied to the connecting portion of the handle portion 660 can be dispersed, so that the structure of the sub handle portion 600 can be simplified. In addition, the right and left weight balance when holding and holding the handle portion 660 can be improved to improve the transportability.

Further, in this embodiment, when the entire vacuum cleaner 1 is to be lifted via the hand handle 300, the fitting between the connecting pipe mounting mechanism 640 and the mounting portion 401 is disengaged. The hand handle 300
There is no need to make the connection between the connection pipe 400 and the connection pipe 400 more rigid than necessary, and if the connection pipe 400 is lifted, the connection is released.
Alternatively, damage to the connection between the handle 300 and the connection pipe 400 can be prevented in advance.

Further, in this embodiment, the connection between the connecting pipe mounting mechanism 640 and the mounting portion 401 is not disengaged even if it is pulled obliquely. Utilizing this, the user can move the vacuum cleaner 1 in the vertical storage posture by pulling or pushing, while holding the handle 300 by hand. That is, in this embodiment, the vertical storage posture is maintained by the moving means 102 and the legs 103 provided on the back surface of the vacuum cleaner main body 100 which is the bottom surface in the vertical storage posture.

The connection pipe 400 is connected to the vacuum cleaner main body 10.
0, so that the vacuum cleaner 1 is in a vertically stored posture via the moving means 102 without being disturbed by the suction body 500 attached to the connection pipe 400.
Is inclined, the leg 103 can be lifted, and the vacuum cleaner main body 100 can be supported by the moving means 102 alone. Therefore, the vacuum cleaner 1 in this oblique posture can be Can be moved by utilizing the moving means 102.

In addition, since the hand handle 300 is fixed to the upper end of the vertical storage posture, the hand handle 300 at the high position is held, and the traveling means 102 is used via the hand handle 300 to allow the vertical storage posture. Can be easily moved.

Further, in this embodiment, the sub-handle portion 600 is connected to the suction hose 200 and the vacuum cleaner main body 10.
Because it has a structure that can be attached and detached between 0 and
An electric vacuum cleaner having excellent storage and transportability can be easily obtained without greatly changing the structure of the conventional electric vacuum cleaner.

Further, the height H1 of the vacuum cleaner 1 at the time of vertical storage can be shortened by easily shortening the length of the connection pipe 400 by operating the handle 300 at hand and adopting the storage posture. In this embodiment, the height H1 at the time of storage is set to about 1150 mm.

As described above, the vacuum cleaner 1 according to this embodiment is excellent in storage and transportability in the vertical storage position.

The schematic structure of this embodiment will be further described below with reference to FIGS. The vacuum cleaner main body 100 includes a dust collecting chamber (not shown) having a disposable dust collecting bag therein, and the moving means 102 includes a pair of large wheels 104 and one free wheel 105.
00 can be moved. In a normal cleaning (running) posture, the large wheels 104 and the free wheels 105 take a long posture before and after being installed on the cleaning surface.

The dust collecting chamber is provided on one side in the longitudinal direction of the vacuum cleaner main body 100, and the other side is provided with an electric blower (not shown) and a cord reel unit. A free wheel 105 is provided below the dust collection chamber, and a pair of large wheels 104 are provided on both sides of the electric blower or the cord reel. Further, a hose mounting portion 101 is formed at an end in the longitudinal direction on the dust-collecting chamber side in a horizontal direction along the longitudinal direction. The pair of large wheels 104 is provided on the other end side in the longitudinal direction opposite to the end where the hose mounting portion 101 is provided, and the installation portion 104a around the large wheel 104 is attached to the main body of the vacuum cleaner. 100 is provided so as to protrude from the bottom surface and back surface (the other end). Thereby, this vacuum cleaner main body 10
0 rotates the free wheel 105 so as to float around the rotation axis B1 of the large wheel 104 from the cleaning posture supported by the pair of large wheels 104 and the free wheel 105, thereby vertically moving the hose mounting portion 101. The vertical storage posture of the vertical position can be set.

In this vertical storage position, the vacuum cleaner body 10
0 is the pair of large wheels 104 and the vacuum cleaner main body 10
0 is stably supported by the legs 103 provided on the upper rear surface. Also, the electric vacuum cleaner main body 100
Increases the height of the end portion in the longitudinal direction where the large wheel 104 is arranged, thereby securing a space for disposing the electric blower and the cord reel arranged inside. The upper surface of the vacuum cleaner main body 100 is formed so as to be inclined from the end in the longitudinal direction having a height to the other end, so that the traveling performance and the compactness are achieved.

On the upper surface of the vacuum cleaner main body 100, there is provided a main handle 107 capable of carrying the cleaning while maintaining the horizontally long cleaning posture. The main handle 107 is located at the center of gravity G of the vacuum cleaner main body 100.
It can be stored in the vacuum cleaner main body 100 by rotating around a rotating shaft 108 provided above the first vacuum cleaner 1.

Further, in this embodiment, the connecting pipe position holding means 14 for holding the attitude of the connecting pipe 400 on the upper surface which is the topmost part of the vacuum cleaner main body 100 in the cleaning posture.
0 is provided. The connection pipe position holding means 140 is composed of a pair of protrusions 141 for supporting the connection pipe 400 from the left and right in a vertically stored state, and is positioned below the connection pipe mounting mechanism 640 in the vertical storage position. It is provided on the outer surface of the machine body 100.

The operation of the vacuum cleaner main body 100 is controlled by receiving an operation signal transmitted from the hand handle 300 by an infrared receiver 109 provided on the upper surface of the vacuum cleaner main body 100. The hand handle 30
An electric conductive wire is provided along the suction hose 200 from 0, and a signal for controlling the operation of the vacuum cleaner 1 via the conductive wire, for example, a signal for controlling the rotation speed of a motor provided in the blower And the operation of the vacuum cleaner 1 may be controlled.

It should be noted that reference numeral 110 denotes the vacuum cleaner main body 10.
The operation display unit 111 provided on the upper surface of the reference numeral 0 is a code reel button. 106 is the hose mounting portion 101
, Which can be opened and closed via a rotating hinge (not shown) provided on the bottom side of the vacuum cleaner 100 for mounting a disposable dust bag provided inside. It is. The dust chamber opening / closing lid 10
A lock mechanism and a lock button (not shown) for opening and closing are provided on the upper surface side opposite to the rotating hinge 6 .

The sub-handle portion 600 has a function of attaching the sub-handle portion 600 to the vacuum cleaner main body 100, a function of attaching the suction hose 200 to the sub-handle portion 600, and a function of It has a function of communicating the main body 100 with the suction hose 200, a function of holding the connection pipe 400, and a handle function for a user to hold the sub handle 600.

In this embodiment, the sub-handle 6
The outer appearance structure of the tubular pipe structure 601 communicating the vacuum cleaner main body 100 and the suction hose 200 is shown in FIG.
The connecting pipe mounting structure 602 arranged in parallel with the pipe structure 601; and the connecting pipe mounting structure 602
Main structure 6 for connecting to the pipe structure 601
03 and a sub-connection body 604, and the four structures are formed to have a space 605 penetrating at the center thereof.

The sub-structure 604 is located on the vacuum cleaner main body 100 side, and the main structure 603 is located on the opposite side. The main structure 603 and the connection pipe mounting structure 602 have a thickness enough to allow the user to grip the two structures, and at least a penetrating space 605 at least in the penetrated space 605 so that the user does not feel uncomfortable. Surface treatment.

In this sub-handle 600, the pipe structure 601 constitutes the dust passage 630, the main body mounting mechanism 610 is provided at one end, and the hose mounting mechanism 620 is provided at the other end. Mounting structure 602
Connecting tube attachment mechanism 640 is provided, et al is in, the main structure 6
03 is provided with a handle portion 660. In this embodiment, the hose mounting mechanism 6 is positioned so that the connection pipe mounting structure 602 is located upward in the cleaning position.
20 is attached to the hose attaching portion 101, and the hose connecting portion 230 of the suction hose 200 is attached to the hose attaching mechanism 620.

According to the sub handle 600, the user can connect the connecting pipe mounting structure 602 or the main structure 603.
The posture can be easily changed from the cleaning posture shown in FIG. 2 to the vertical storage posture shown in FIG.

In the vertical storage position, the vacuum cleaner main body 100 and the connecting pipe 400 are connected in a position where the longitudinal directions thereof are substantially parallel, that is, the connecting pipe 400 is connected in a substantially vertical position, so that the vertical direction is achieved. Improves the stability of the storage position,
Further, the installation area can be reduced. The main body 100 of the vacuum cleaner according to this embodiment includes a moving unit 1.
02 is substantially flat (substantially straight when viewed from the side), and the large wheel 1
The top surface of the vacuum cleaner main body 100 is formed with an inclined surface so that the 04 side is thick and the tip end on which the hose mounting portion 101 is arranged becomes thin. In addition, the vacuum cleaner body 100
The hose mounting part 1 is used to reduce the fall during running.
01 is mounted at a lower position.

For this reason, the connection pipe 400 which is attached to the vacuum cleaner main body 100 substantially vertically so as to be carried on the back thereof.
A wide space is formed between the hose and the hose mounting portion 101. In the present embodiment, the sub handle portion 600 is arranged using this space. This sub handle 60
0 is provided above the position of the center of gravity of the vacuum cleaner 1 in the vertical storage position, and includes the main body of the vacuum cleaner 100, the hand handle 300, and the suction body 50.
0 is an intermediate position between the connection pipe 400 to be connected and an upper position where the user can easily operate.

Further, the position where the sub-handle portion 600 is provided is a horizontally long space having a sufficient length necessary for the user to grip and hold the vacuum cleaner 1 in the vertical storage position because of the large space. Handle portion 300 can be provided.

In this embodiment, the sub-handle portion 600 is provided with the sub-structure 604 to maintain the strength. However, by forming the sub-handle portion 600 with a metal material or the like, the sub-structure 600 is not necessarily required. There is no need to provide body 604.

In this embodiment, the connection pipe 4
00 is held almost vertically,
You don't have to be strictly vertical. For example, in the vertical storage posture, the mouthpiece 500 provided below the connection pipe 400 is separated from the vacuum cleaner main body 100 so that the hand handle 300 is positioned above the vacuum cleaner main body 100. By shifting the connection pipe mounting structure 602 to form an angle, the vertical storage posture can be more stably supported, and the angle at which the vacuum cleaner main body 100 is tilted when moving with the hand handle 300 can be reduced. Thus, the burden on the user holding the hand handle 300 can be reduced.

Next, the suction hose 200 functions as a transport passage for transporting dust to the vacuum cleaner main body 100 and as a moving pulling means for moving the vacuum cleaner main body 100. Have. In this embodiment, a belly-shaped flexible hose is employed.

The hand handle 300 has a function of connecting the suction hose 200 to the connection pipe 400, a function of controlling the operation of the vacuum cleaner main body 100, a function of moving the vacuum cleaner main body 100, and a function of the suction body 500. And a function of fixing or releasing the expansion and contraction of the connection pipe 400.

The hand handle 300 is detachably connected to the suction hose 200 and further connected to the connection pipe 400.
Both are detachably attached to each other, so that the suction hose 200 communicates with the connection pipe 400 to form a dust conveyance path.

Further, the hand handle 300 is provided at a position in the longitudinal direction of the connecting pipe 400, that is, at the upper end on the extension of the central axis A1 of the connecting pipe 400, with the central axis A1 at 90 ° or more and 160 ° or less, preferably 100 ° or less. The handle portion 302 is provided at an angle (α in FIG. 2) of about 120 degrees to about 120 degrees and the longitudinal direction A2 substantially coincides with the connection direction of the suction hose 200 and the connection pipe 400. With the handle portion 302, the main body 100 can be moved via the suction hose 200.
The movement of the mouthpiece 500 can be operated. Further, the vacuum cleaner 1 in the vertical storage posture can be tilted down via the handle portion 302, and can be moved by being pulled or pushed in this state.

In particular, according to the handle portion 302, the twisting operation, that is, the rotation P1 about the central axis A1 can be easily performed. In addition, in this twisting operation, the suction hose 200 is rotatably attached to the hand handle 300 so as to be always positioned below the handle 302 by gravity.
Since the suction hose 200 is not pulled up by the twisting operation 02, the burden on the wrist can be reduced. At this time, since the handle portion 302 is provided at the upper portion, the suction hose 200 provided below does not disturb the twisting operation. Thereby, the mouthpiece 500 can be rotated 90 degrees or more on the floor surface (cleaning surface) as described later (P2 in FIG. 2).

Further, the above-described shape of the handle portion 302 allows the rotation operation of the mouthpiece 500 to be performed relatively easily. The reason for this is that, when the handle portion 302 is angled (α in FIG. 2), a rotational moment is generated when the handle portion 302 is twisted.

Further, an operation section 303 for operating the vacuum cleaner main body 100 is provided near the handle section 302.
Is provided. The operation unit 303 includes an infrared transmitting unit 3
An operation signal is transmitted from the infrared transmitting section 304 to the infrared receiving section 109 provided in the vacuum cleaner main body 100, and the power of the vacuum cleaner main body 100 is turned on.
N, OFF and various controls can be performed.

In the vicinity of the handle 302, a trigger switch 301 for fixing or releasing the expansion and contraction of the connecting pipe 400 is provided. In this embodiment, the trigger switch 301 is provided at a lower portion near the base of the handle portion 302 so as to be operable with the index finger so as to trigger the pistol when holding the handle portion 302. With this mechanism, the user can operate the one-hand operation for fixing and releasing the expansion and contraction of the connection tube 400 while holding the handle 302.

The connection pipe 400 is connected to the handle 3
00 and the mouthpiece 500 are communicated with each other, and the hand handle 300 and the mouthpiece 500 are fixed at a predetermined position, so that the hand handle 300 moves (moves and rotates).
Is transmitted as a movement (movement or rotation) of the mouthpiece 500. In this embodiment, the connection pipe 4 is formed by combining two pipes having different sizes, that is, a first pipe 420 and a second pipe 440.
00 is configured to be expandable and contractable so as to be fixed at a predetermined length, and the hand handle 300 is attached to one side and the mouthpiece 500 is detachably attached to the other side.

In this embodiment, the fixing or release of the expansion / contraction of the connection pipe 400 is performed by the hand handle 30.
0 can be operated by the trigger switch 301 provided on the connection pipe 400, and the connection pipe expansion / contraction mechanism 40 can be expanded and contracted even when the connection pipe 400 is separated from the hand handle 300.
2 is provided with a second lock switch 431 .

In this embodiment, a convex mounting projection 410 serving as the mounting portion 401 is provided on the end side of the tubular body whose length changes with the mouthpiece 500 by expansion and contraction. The protrusion 410 is provided with a fitting portion 411 that protrudes in both directions of expansion and contraction. With this structure, the connection pipe 40
The fitting portion 411 is inevitably formed by reducing the length of the connecting pipe 411 so that the fitting portion 411 is provided on the sub-handle portion 600.
Operability can be improved.

The suction body 500 is provided with a suction body 1000 having a suction port for sucking dust on the bottom surface, and the suction body 1000 is connected to the connection pipe 400, and transmitted through the connection pipe 400. In response to the movement of the handle 300, the bottom surface of the suction main body 1000 always operates so as to contact the cleaning surface (floor surface).
And a free connection portion 1500 that communicates with the connection pipe 400 so that an air flow containing dust sucked from the 000 is guided to the connection pipe 400.

The suction main body 1000 has a flat and substantially rectangular shape, and the free connecting portion 1500 is rotatably mounted at the center of the upper surface thereof.

The free link 1500 comprises a tubular first arm 1501 and a second arm 1502. One end of the first arm 1501 has a first rotating part 151.
03 with respect to the suction main body 1000
Rotatably mounted in the elevation direction, the second arm portion 15
02 is provided at one end of the first arm 1501 via a second rotating portion 1504 at the other end thereof.
000 is mounted so as to be rotatable in the left-right direction for rotating the 000 in parallel with the cleaning surface. And, the free connecting portion 150
0, around the suction port body 500, and the height direction of the hand wheel 300, thereby rotatably connected to the left and right Direction, relative to intact cleaning surface of the suction port body 1000 rotation P1 of the twisting operation of the hand wheel 300 The rotation can be transmitted to P2.

That is, according to this embodiment, when the handle portion 302 of the hand handle 300 is straightened, as shown by a solid line in FIG.
2 can be cleaned in the V1 direction, which enables a wide range of cleaning by taking the first driving mode in which the depth direction of 0 is the same as the front-rear direction of cleaning.
As shown by the dotted line, the second driving mode in which the longitudinal direction of the suction main body 1000 coincides with the front-rear direction of the cleaning enables the cleaning in the V2 direction, which enables narrow cleaning.

Since the first rotating portion 1503 is provided above the center of gravity G2 of the suction main body 1000, even if the suction body 500 is lifted off the floor via the connecting pipe 400, the bottom surface of the suction main body 1000 is not affected. The part is set to be substantially parallel to the floor surface.

Further, in this embodiment, an overhang portion 1012 is provided at the rear center of the mouthpiece main body 1000, and the overhang portion 1012 is provided with a large rear roller whose both sides are supported by rotating shafts. This rear roller (not shown)
The running and rotating performance of the mouthpiece 500 at the time of cleaning is improved by receiving a load from the handle 300 at the time of cleaning the cleaning surface.

As described above, according to the electric vacuum cleaner 1 according to the present embodiment, the operation control of the electric vacuum cleaner main body 100 and the operation of the electric vacuum cleaner main body 1 via the handle 300 at hand.
00 and a function of operating the movement of the suction body 500, and a function of fixing or releasing the expansion and contraction of the connection pipe 400, so that a user in a standing posture holding the hand handle 300 is greatly increased. Driving operation, cleaning and storage can be performed without changing the posture.

Further, in this vertical storage position, the hand handle 300 is disposed and held at the top, so that the user can move through the hand handle 300 in the vertical storage position.

Next, the specific structure of the handle 300 will be described in more detail with reference to FIGS. FIG. 3 is a rear perspective view of the hand handle. 4A and 4B are external views of the handle, in which FIG. 4A is a front perspective view, FIG. 4B is a plan view, FIG. 4C is a front view, and FIG. 4D is a right side view.
FIG. 5 is an exploded view of the first tube of the hand handle.
FIG. 6 is a longitudinal sectional view of the hand handle, and FIG. 7 is an exploded view of parts of the second tube. FIG. 8 is a detailed view of the right side view of the handle at hand. FIG. 9 is a cross-sectional view for explaining the operation of the hand handle.

First, referring to FIG.
Reference numeral 00 denotes a first pipe 310 which is detachably attached to the connection pipe 400, and the suction hose 20 having a bent portion.
0 is detachably attached to the second pipe 350. The first pipe 310 and the second pipe 350 are rotatably mounted so that the suction hose 200 can be turned with respect to the center axis A1 of the connection pipe 400. Therefore, for example, the handle 3
By twisting the handle portion 302 in the direction of arrow M1 (clockwise), the second tubular body 350 rotates in the direction of arrow M2 (counterclockwise) with the twisting operation, and the suction hose 200 always moves downward. Act to be.

In this embodiment, the first tube 3
Although the 10 and the second tube 350 are formed as two members, they may be integrally formed as one bent tube having a substantially V shape.

As shown in FIG. 4, the first tube 31
0, the operation unit 303 and the connection pipe 400
There is provided a lock switch 371 of the connection pipe fixing mechanism 370 which enables the attachment and detachment of the connection pipe. The operation unit 303
Is provided with various operation switches in addition to the infrared transmitting unit 304.

The first pipe 310 is provided with a transport path 311 so that the longitudinal direction thereof is substantially coincident with the extension of the central axis A1 of the connection pipe 400, and the first pipe 310 is provided with one end of the transport path 311. Connecting tube connecting portion 305 at one end of tubular body 310
Is formed, and the connecting pipe connecting portion 305 is connected to the connecting pipe 400.
Are connected to each other by being fitted to the ends of the.

The other end of the first tube 310 is integrally provided with a handle portion 302. The handle portion 302 extends the longitudinal direction of the first pipe 310 to extend the center axis A1 of the connection pipe 400 so as to provide a space S1 above the other end (upper end) of the transport path 311. The connecting pipe 400 is formed so as to be displaced from the line, and the end thereof is bent so that the end is connected to the center axis A1 of the connection pipe 400.
, And forms a predetermined angle α with the central axis A1. As a result, at the end of the handle portion 302, a hold portion 302a for holding by hand is bent and formed.

In FIGS. 5 and 6, the first tube 31
Reference numeral 0 includes a transport path 311 formed on the lower side and a component placement section 312 formed inside the upper side. The transport path 311 has one end communicating with the connection pipe connecting portion 305 and the other end communicating with the second pipe 350, and the second pipe 350 is connected to the other end. It is rotatably mounted and conveys dust sucked from the mouthpiece 500 together with the airflow. That is, the second pipe 350 is located on the extension of the central axis A1 of the connection pipe 400 via the transport path 311. The suction hose 200 is moved around the extension of the central axis A1. Mounted rotatably.

As shown in FIG. 5, the first tube 31
0 is a lower case 313 of a resin-formed product constituting the lower part thereof
And an upper case 314 of a resin-formed product constituting the upper part thereof. The transport path 311 is provided in the lower case 3
13, the lower case 313 and the upper case 314 constitute the upper and lower portions of the connection pipe connection part 305 so that the component placement part 312 is provided from the connection pipe connection part 305 to the distal end of the handle part 302. Formed. The first pipe 3 is provided inside the component placement unit 312.
10, a rib (not shown) for fixing the internally mounted product is formed, and an operation board 315, a battery storage section 316 for storing the battery 317,
A connection pipe expansion / contraction switch mechanism 380 and a connection pipe fixing mechanism 370 for the connection pipe 400 are provided. Further, in this embodiment, by providing the connecting pipe telescopic switch mechanism 380 at the front of the operation board 315 and the trigger switch 301 at the rear of the operation board 315, the operation surroundings can be gathered around the operation section 303. At the same time, the internal mounting efficiency is improved. Reference numeral 306 denotes a battery cover that is detachably attached to the upper case 314 in order to mount the battery 317 in the battery storage section 316.

The lock switch 371 of the connection pipe fixing mechanism 370 is rotatably supported at the center in the longitudinal direction, and has an opening 319 provided in the upper case 314 at one end.
A switch portion 372 is formed to be exposed from the other end, and a fixing claw 373 is formed at the other end.

The fixed claw 373 always projects from the opening formed in the lower case 313 to the inside of the transport path 311 by the spring 374, so that the fixed state with the connection pipe 400 is maintained. .

The operation board 315 has mounted thereon a control circuit, a switch, a light emitting diode and the like.
Power is supplied to the battery 15 from a battery 317 stored in the battery storage section 316. Further, on the upper surface of the upper case 314, an operation switch for operating a switch and an infrared transmitting unit 304 are provided. In the present embodiment, the mounting position of the operation board 315 is specified by the ribs, whereby the positional relationship between the operation switches and the like provided on the upper case 314 and the operation board 315 is determined. By operating the operation switch, an optical signal for remotely operating the internal circuit of the vacuum cleaner main body 100 is transmitted from the light emitting diode through the infrared transmitting section 304 to the infrared light receiving section of the vacuum cleaner main body 100 using ceiling reflection or the like. 109 .

The battery housing 316 is provided at the tip of the handle 302. This allows
The dead space of the handle 302 can be effectively used, and the battery housing 3 is located near the operation board 315.
Since 16 can be arranged, the connection can be shortened.

Also, the connecting pipe telescopic switch mechanism 38
Reference numeral 0 indicates that the length of the connection pipe 400 is fixed to a predetermined length or the fixing is released as described above. In this embodiment, a link mechanism is employed to remotely control the connection pipe telescopic mechanism 402 located at a position away from the handle 300 at hand.

That is, in this embodiment, the connection pipe telescopic switch mechanism 380 is provided with a trigger switch 301 provided near the base of the handle 302 of the lower case 313,
A rotation connection plate 381 provided between the trigger switch 301 and the connection pipe 400, a spring 382 attached to the rotation connection plate 381, and a first connection for connecting the trigger switch 301 and the rotation connection plate 381. Rod 383
And a second connecting rod 384 having one end attached to the rotary connecting plate 381 and the other end supported by a connecting pipe connecting portion 305 to the connecting pipe 400.

As shown in the cross-sectional view of FIG.
The connecting pipe fixing mechanism 370 is located at the center of the 14 connecting pipe 400 side end.
Is provided. The first connecting rod 383 is the upper case 31
4 and a connecting rod mounting portion 381 extending parallel to the longitudinal direction
It has a generally U shape having a portion extending obliquely outward toward a, and is disposed in the upper case 314 so as to be shifted leftward from the center so as to avoid the connection pipe fixing mechanism 370. On the other hand, the second connecting rod 384 has a large-diameter portion 384a at the end and is entirely composed of a straight portion, and has a connecting pipe fixing mechanism 37.
It is arranged in the upper case 314 so as to be shifted to the right side from the center so as to avoid 0. When the trigger switch 301 is not operated, the end surface of the large-diameter portion 384 a is located at a position retracted from the end surface of the upper case 314. Large diameter of second connecting rod 384
Portion 384a is configured to contact fourth connecting rod 490.
ing. The first connecting rod 383 and the second connecting rod 38
4 may have another shape . For example, first connecting rod 383 may be substantially L-shaped as a whole including a part extending outward and a part extending in parallel with the longitudinal direction of upper case 314.

Rotating connecting plate 381 and connecting rod mounting portion 381
a, the first connecting rod 383, the connecting rod mounting portion 381b, and the second connecting rod 384 form a link mechanism, and the linear movement of the trigger switch 301 is controlled by the rotation connecting plate 381 via the first connecting rod 383. The rotation is converted to a rotation, and further to a linear motion of the second connecting rod 384. Connecting rod mounting part 3
81a and the connecting rod mounting portion 381b are connected to the first connecting rod 38.
The tip of the third connecting rod and the tip of the second connecting rod 384 are each formed as a groove having a curved surface that enables linear movement.

The rotation connection plate 381 is provided in the upper case 314 and below the operation board 315, and has a configuration in which the link mechanism can freely rotate by utilizing the space below the operation board 315. Has become. The position where the rotation connecting plate 381 is provided is a position where the transport path 311 and the upper case 314 extend in parallel and a position on a bent portion slightly before the transport path 311 branches off from the upper case 314. In other words, the position at which the rotary connection plate 381 is provided is an intermediate position between the trigger switch 301 and the connection pipe fixing mechanism 370.

The position above the bent portion of the second tubular body 350 makes it easy to secure a rotating space for the link mechanism including the rotary connecting plate 381, and makes the connecting pipe length adjusting mechanism compact. be able to. Further, the upper case 314 is a portion that extends substantially in parallel with the lower case 313, and is suitable for stably holding the rotation connecting plate 381.

In this embodiment, a switch mounting hole 385 is formed near the base of the handle portion 302 of the lower case 313, and the trigger switch 301 can be slid in the switch mounting hole 385 in the longitudinal direction of the connection pipe 400. Installed. The trigger switch 301 has an inner plate 386 attached to the inside of the lower case 303 and a switch attached to the outside of the lower case 303 and connected to the inner plate 386 so as to sandwich the switch mounting hole 385. And a plate 387.

The rotation connecting plate 381 is rotatably mounted on a screw base 318 for mounting the upper and lower cases 313 and 314 via screws (not shown) for mounting both cases. The rotation connection plate 381 has connection rod mounting portions 381a and 381b for mounting the first and second connection rods 383 and 384 on both sides, respectively. One end of the first connecting rod 383 is provided at one end 381a of the connecting rod mounting part, and the other end of the first connecting rod 383 is provided at the inner plate part 386.
6a. The other end of the second connecting rod 384 is attached to the other connecting rod attaching part 381b of the rotary connecting plate 381, and the other end of the second connecting rod 384 is exposed to the connecting pipe connecting part 305. Is provided. And
The spring 382 is mounted between one connecting rod mounting portion 381a of the rotary connecting plate 381 and the lower case 313,
A force for pulling the trigger switch 301 (a force for fixing the connection tube expansion / contraction mechanism 402) acts.

According to this structure, the user holding the handle portion 302 holds the grip firmly with the thumb, middle finger, ring finger, and little finger, and holds the trigger switch 30 with the remaining index finger.
1 can be operated comfortably as if a handgun was triggered. The force acting in the direction away from the connection pipe 400 by the trigger switch 301 is applied to the rotation connection plate 3.
By 81, the force is converted into a force in the opposite direction, that is, in the direction approaching the connection pipe 400, and acts so as to protrude the end of the second connection rod 384 on the connection pipe connection portion 305 side. The force is converted into a force in a direction to release the fixed state of the connection pipe fixing mechanism 402. Further, the spring 382
Thus, when the trigger switch 301 is not pulled (the state where the trigger switch 301 is not operated), the trigger switch 301 is always fixed.

In the above embodiment, the rotary connecting plate 381 is used.
Is provided on the lower case 313 in the vertical (vertical) direction, but the support shaft may be provided between the upper case 314 and the lower case 313 in the horizontal (horizontal) direction.

As described above, in this embodiment, a force is easily applied by one-handed operation with the hand holding the handle portion 301, and the force is a force that easily releases or fixes the connecting pipe expansion / contraction mechanism 402. It has such a mechanism.

Further, the second pipe 350 rotatably connected to the transport path 311 of the first pipe 310 has a bent portion, and as shown in FIG. First connection part 3 having a central axis A4 coincident with the extension of axis A1
A central axis A5 that forms a predetermined angle with the central axis A4 of the transport path 311 that substantially coincides with the central axis A4 of the first connecting portion, that is, the extension of the central axis A1 of the connecting pipe 400.
Is formed by bending downward from the first connection portion 351.

Then, the first connecting portion 3 of the second tubular body 350
51 is inserted into the transport path 311 so as to be relatively rotatable, and the transport path 311 of the first tubular body 310 and the second
The first connecting portion 351 of the pipe 350 is connected so as not to be detached by the coupling means 353, so that the second pipe 350 can rotate around the extension of the central axis A1 of the connecting pipe 400. It is configured as follows.

Here, the transport path 311 and the first connection portion 351
The coupling means 353 for preventing the falling off can be adopted arbitrarily, but in the present embodiment, as shown in FIG.
After the annular groove 354 is provided in the first connection portion 351 and the first connection portion 351 is inserted into the transport path 311, one of the retaining pieces 356 is removed from the openings 355 provided on both side surfaces of the transport path 311. By inserting the portion into the annular groove 354, the first tube 310 and the second tube 350 are rotatably connected so as not to come off.
In addition, since the retaining piece 356 is detachably attached, the retaining piece 356 is removed during maintenance such as when dust is clogged in the pipe, and the first pipe 310 is removed.
And the second tube 350 can be easily disassembled.

As shown in FIG. 7, a connection ring 210 is attached to the end of the suction hose 200, and the connection ring 210 is connected to the second tube 350 of the second tube 350.
The second connecting portion 350 and the suction hose 200 are connected by being detachably inserted into the end of the connecting portion 352. In addition, 211 is the connection ring 210
And 356 are locking portions of the second connection portion 352,
By inserting and connecting the locking portion 211 and the locking portion 356, the second connecting portion 352 and the suction hose 200 are connected so as not to come off.

Here, the locking portion 2 of the connection ring 210
11 has a function of a spring utilizing the elasticity of the resin by forming one of the other three sides and cutting off the other three sides, so that the engaged locking portion 211 is sandwiched and dented from both sides. Thus, the connection can be released and the second connection portion 352 and the suction hose 200 can be removed.
Therefore, it can be easily disassembled,
Easy maintenance when trash is clogged.

In this embodiment, the suction hose 20
0 is held rotatably by the connecting means on the connecting ring 210, and as a result, in a state where the suction hose 200 is connected to the second connecting portion 352 of the second pipe 350, The suction hose 200 is connected to the second connection portion 352.
It is configured to rotate relative to. Thereby, the twist of the suction hose 200 can be prevented. That is, according to this embodiment, since the suction hose 200 is connected to the handle portion held by the user by the double rotation mechanism, unnecessary load on the wrist held can be significantly reduced. it can.

As shown in FIG. 8, in this embodiment, the first tube 310 and the second tube 350 are assembled to complete the hand handle 300 and the hand handle 30
In a state where the suction hose 200 and the connection pipe 400 are attached to the connection pipe 400, the center axis A3 of the transport path 311 and the center axis A4 of the first connection portion 351 which are on the extension of the center axis A1 of the connection pipe 400, and the second The angle β formed with the connection portion 352 is 9
The angle is set to be 0 to 150 degrees. This means that when the user stands by holding the holding portion 302a of the handle portion 302 of the handle 300 at the time of cleaning, the suction hose 200 always hangs obliquely downward, and the electric This is because the cleaner main body 100 can be easily pulled and moved, and also, it has a hold portion 302a of the handle portion 302 and does not interfere with the hand for operating the trigger switch 301.

Next, the operation of the handle at hand will be described with reference to FIG. When the trigger switch 301 is not operated, as shown in FIG. 9A, the end surface of the large-diameter portion 384a is at a position retracted from the end surface of the upper case 314. Next, when the trigger switch 301 is operated, FIG.
As shown in (b), the end surface of the large-diameter portion 384 a is pushed out toward the end surface of the upper case 314 by the action of the link mechanism including the rotary connection plate 381, the first connection rod 383, and the second connection rod 384. It is. Accordingly, as described later,
Fourth connecting rod 490 in contact with the end face of large diameter portion 384a
The third connecting rod 426 of the connecting pipe 400 is pushed out through the connector. In the present embodiment, even when the trigger switch 301 is operated, the distal end surface of the large-diameter portion 384a is at a position retracted from the end surface of the upper case 314. When the trigger switch 301 is operated, the distal end surface of the large-diameter portion 384a is
If it protrudes from the end face of 14, there is a possibility that eyes and the like may be damaged due to erroneous operation, but in this embodiment, it is safe because it does not protrude.

Further, since the second connecting rod 384 does not protrude from the end surface of the upper case 314 of the handle 300, the second connecting rod 384 can be connected to a suction port or the like which is not structured to receive the second connecting rod 384.

Next, based on FIGS.
Will be described in more detail. FIG. 10 is an exploded view of the parts of the connection pipe 400, FIG. 11A is a cross-sectional view of the connection pipe 400 in a contracted state, and FIG. 11B is a plan view of the connection pipe 400 in a contracted state. FIG. 12 is a longitudinal sectional view showing a state where the connection pipe 400 is contracted. FIGS. 13A and 13B are explanatory diagrams of the operation of the second lock switch 431, and FIGS.
Connecting pipe telescopic switch mechanism 380 of handle 300 at hand
FIG. 4 is a diagram for explaining the operation of the connection pipe 400.

As described above, the connection pipe 400 is connected to the first connection pipe 42 disposed on the handle 300 side.
0, a sleeve 429 inserted into one end of the first connection pipe 420, and a second connection pipe 440 arranged on the suction body 500 side. The second connection pipe 440 is formed to be thinner than the first connection pipe 420, and one end of the second connection pipe 440 is inserted into a communication portion 421 (opening) of one end of the first connection pipe 420. Is the first connection pipe 42
By moving within 0, the length of the connection pipe 400 can be adjusted.

The first connecting pipe 420 has a connecting pipe section 423 formed of a resin material and having a conveying path 422 through which dust passes, and the connecting pipe section 423 includes a component placement section 4.
Connection pipe cover 42 formed of a resin material constituting 24
5, and both members are attached via screws (not shown). The transport path 422 is provided so as to penetrate both ends in the longitudinal direction of the connection pipe section. In addition, the component disposing portion 424 forms a recess along one side (upper side) in the longitudinal direction of the connection tube portion 423 along the longitudinal direction, and the connection tube attached to cover the recess. And a cover 425.

The component disposing portion 424 is provided with a connecting pipe expansion / contraction mechanism 402 and a third connecting rod 426. The connection pipe expansion / contraction mechanism 402 is provided at an end of the component placement section 424 on the suction body 500 side, and includes a third connection rod 426.
Has one end attached to the connecting pipe expansion / contraction mechanism 402, and the other end attached to the end on the handle 300 side.

A sleeve 429 is mounted in one end of the first connection pipe 420 via a packing 429b and a packing presser 429c.

The connecting pipe expansion / contraction mechanism 402 is provided with a lock pin retainer 428 movably attached to an opening 427 formed in a wall between the connecting pipe expansion and contraction mechanism 422, and a second pin operating the lock pin retainer 428. 2 lock switch 431
A spring 428b for always maintaining the second lock switch 431 in a fixed state; a fixed claw 429a (see FIG. 13) formed on the sleeve 429;
8 and a lock pin 428a sandwiched therebetween. When the lock pin 428a fits into the fixing groove 441 provided at a predetermined interval on the surface of the second connection pipe 440, the connection pipe expansion / contraction mechanism 402 is fixed.

The lower surface of the lock pin retainer 428 has an inclined surface which becomes higher toward the side closer to the second lock switch 431, and the lock pin 428 a is in contact with the inclined surface and moves in the longitudinal direction of the connection pipe 400. This causes the lock pin 428a to protrude and retract into the fixing groove 441.

As shown in FIG. 13, the lock pin presser 42
8 is in contact with the end of the third connecting rod 426, and receives a force along the longitudinal direction of the connecting pipe 400 by the third connecting rod 426, so that the second lock switch 431 is provided.
Is pressed and moved, and acts in the same manner as when the switch section 431a is independently moved and operated, and the connection pipe expansion / contraction mechanism section 40 is operated.
2 to release the fixation. Therefore, the connecting rod mounting portion and the third connecting rod 426 do not necessarily need to be connected to each other, but may be brought into contact with each other so as to release the fixed state as the third connecting rod 426 moves. In this way, the assemblability can be improved.

In this embodiment, the connection pipe cover 425 and the connection pipe section 423 constitute a handle connection section 434 for connecting to the handle 300 at hand.

The handle connecting portion 434 has an end 435 of the transport path 422 formed in a convex shape. Then, by connecting the handle connection portion 434 and the connection pipe connection portion 305, the end 435 of the convex transport path 422 is inserted and fitted into the opening of the connection pipe connection portion 305, and the connection is further performed. The fixing claw 373 of the lock switch 371 shown in FIG. 5 is fitted and fixed to the end 435 by the tube fixing mechanism 370.

As shown in FIG. 11, the third connecting rod 42
The leading end of No. 6 extends outside the end 435 of the transport path 422 and is located at a position retracted from the end surface of the end 435. If the third connecting rod 426 protrudes, the eyes and the like may be hurt. However, in this embodiment, the third connecting rod 426 does not protrude beyond the end surface of the end 435, so that it is safe.

Further, by the fitting, the fourth connecting rod is formed.
And an end portion of the third connecting rod 426 is connected to the end of the 490. Accordingly, the third and fourth connecting rods 426 and 490 that move along the longitudinal direction of the connection pipe 400 are connected to each other, and the operation of the trigger switch 301 can be transmitted to the connection pipe expansion / contraction mechanism 402. In this embodiment, the ends of the connecting portions are connected to each other,
Third, as the end portion of the fourth connecting rod 426,490 abuts, third, fourth concave one supporting portion of the supporting portion end of the connecting rod 426,490 is supported in the other The end portions are convex to facilitate the positioning of the two support portions and to ensure the connection.

Further, the connecting pipe portion 42 of the first connecting pipe 420
At the end (the second connection pipe side) of the third member 3, there is provided a fitting attachment portion 410 having a fitting portion 411 projecting in the expansion and contraction direction. Since this mounting projection 410 is formed on the back side of the connection pipe expansion / contraction mechanism 402 and is located at the end of the first pipe 420 and at the lowermost part, the strength is also strong, and The handle 300 can be attached to the main body 100 at the highest position.

On the other hand, the second connection pipe 440 comprises a pipe portion 444 made of a metal material constituting the garbage transfer path 452, and a first end member 442 made of a resin material provided at both ends thereof.
And an end member 443. The first end member 4
Reference numeral 42 is provided so as to be movable in the transport path 422 of the first connection pipe 420, and its peripheral side surface is movable in the transport path 422 so that there is no air leakage.
It is mounted thicker than 44. The first end member 442 is connected to the second connection pipe 440 by the transport path 422.
It also has a stopper function to prevent it from falling off.

As described above, the fixing grooves 441 provided on the surface of the pipe portion 444 at predetermined intervals are directed. The lock pin 4 is
28a is fitted into the connecting pipe 400 to a predetermined length.
Can be adjusted. The interval between the fixing grooves 441 can be determined as appropriate. A number may be added to each of the fixing grooves 441 so that the user can always recognize the length used.

Further, the second end member 443 enables connection of the mouthpiece 550 to the free connection portion 1500. The second end member 443 includes a base portion 443 having a mounting portion 453 communicating with the pipe portion 444.
a and an upper cover 443b. On one side surface of the base portion 443a, there is provided a concave component arrangement portion 446 provided with a mouthpiece coupling mechanism portion 445 for coupling with the universal coupling portion 1500. The upper cover is provided so as to cover the component arrangement portion 446. 443b is attached with a screw (not shown).

The mouthpiece connecting mechanism 445 includes a lock switch 447 and a spring 448. The lock switch 447 is rotatably supported at the center in the longitudinal direction and has an opening 44 provided at one end of the upper cover 443b.
A switch portion 447a that is exposed from 9 is formed, and a fixed claw 450 is formed at the other end. Then, the fixed claw 450 always projects inward from the opening 451 formed in the wall surface between the mounting portion 453 and the fixing claw 450 by the spring 448 so that the fixed state of the mouthpiece 500 with the free connection portion 1500 is maintained. Is acting on.

As shown in FIG. 12, below the second connecting pipe 440, a mounting portion 401 provided on the connecting pipe 400 is provided.
The brush 700 is provided so as to be in contact with the vacuum cleaner main body 100 when is engaged with the connection pipe mounting mechanism 640. This prevents the side surface of the vacuum cleaner main body 100 from being damaged by the second connection pipe 440. Instead of the brush 700, a buffer member such as sponge or rubber may be provided.

As described above, the connection pipe 4 according to the present embodiment is
00, the second lock switch 4 of the connection pipe 400
By operating the connection 31, the length of the connection pipe 400 can be adjusted, which is effective when disassembling the vacuum cleaner 1 into individual parts and storing or assembling. Furthermore,
In this embodiment, since the length of the connection pipe 400 can be adjusted even by the operation with the handle 300 at hand, the connection pipe 40 can be adjusted without significantly changing the standing posture during cleaning.
The length of 0 can be adjusted. Moreover, in this embodiment, the handle 300 and the connection pipe 400 can be separated from each other while providing the length adjustment means of the connection pipe 400 in the hand handle 300, so that the storage property can be improved.

FIG. 14 conceptually shows the operation mechanism of the connecting pipe telescopic switch mechanism 380 of the handle 300 and the connecting pipe telescopic mechanism 402 of the connecting pipe 400. FIG. 14A is a conceptual mechanism diagram of the first embodiment. The mouthpiece assembly according to the present embodiment includes a handle 30 at hand.
0 and the connection pipe 400 having an expansion / contraction function are detachable, and the connection pipe 400 can be expanded and contracted by operating a trigger switch 301 provided on the handle 300 at hand. The structure is not limited to the structure of the first embodiment.

FIGS. 14B and 14C show the structure of another embodiment, and FIG.
1 is a conceptual mechanism diagram in the case where 1 is provided near an upper portion of a root portion of a handle portion 302, for example, behind an operation portion 303, and FIG. 3C is a schematic conceptual diagram in a case where the embodiment of FIG. .

For example, when the trigger switch 301 is provided below the handle part 302, the trigger switch 301 is operated with the index finger. Therefore, the structure shown in FIGS. A simple structure allows easy operation.

That is, in the first embodiment shown in FIG.
1 is pulled up as shown by an arrow E1 so that the first connecting rod 3
83 is converted via the rotary connecting plate 381, resulting in a stress that pushes the end of the second connecting rod 384 downward as indicated by an arrow E2. The stress abuts on the end of the third connecting rod 426 of the connecting pipe 400 and pushes it downward due to the connection between the handle 300 and the connecting pipe 400. The other end of the third connecting rod 426 moves the lock pin retainer 428 to fix the lock pin 42 fixing the second pipe 440.
8a is lifted to release the fixed state.

Further, in the embodiment shown in FIG. 13C, the operation of the trigger switch 301 is controlled by two connecting rods (the first connecting rod 383 and the third connecting rod 383) without changing the direction of force by the rotary connecting plate 381. Directly with the connecting rod 426).
May be transmitted. Specifically, the trigger switch 301 is formed in a rod shape, the center of which is rotatably mounted in the switch hole 385, one end is exposed to the outside, the other end is positioned inside, and the first end is connected to the other end. The connecting rod 383 is attached. According to this structure, the number of parts can be reduced because the number of connecting rods can be reduced to two by eliminating the rotary connecting plate 381.

On the other hand, when the trigger switch 301 is provided above the handle portion 302, the force is easily applied by pressing with the thumb. When the trigger switch 301 is pressed in this way, a conversion means for converting the stress, for example, the rotary connection plate 381X is newly provided on one of the hand handle 300 and the connection pipe 400. For example, in the structure shown in (b), the handle connecting portion 434 of the connecting pipe 400 is provided with the rotation connecting plate 381X, so that the force for pushing down the trigger switch 301 as shown by the arrow E3 is converted, and the claw portion is pulled up and fixed. It can be canceled.

As described above, in this embodiment, for example, the structures of the respective parts in FIG. 14 are appropriately combined in consideration of the location where the trigger switch 301 is provided and the direction of the stress for operating the trigger switch. By adopting such a structure, the connecting pipe 400 expands and contracts in relation to the above-mentioned gravity and the floor surface, so that operability can be improved.

In this embodiment, a space between the first tube and the second tube during the maximum stroke of the second tube is provided between the first tube and the second tube. A sealing mechanism that maximizes the sealing effect is provided. FIG. 15 (a),
(B) shows a first connection pipe (outer cylinder) 420 of the connection pipe 400 as an example of a seal mechanism in this embodiment;
FIG. 9 is a diagram illustrating a relationship between second connection pipes (inner cylinders) 440. Note that FIG. 15 is enlarged in the radial direction to be larger than the actual size in order to facilitate understanding. FIG.
In (a), the second connection pipe 440 has a small diameter portion 440a,
Large diameter portion 440b and seal portion 440e provided at the rear end
And Further, a seal 420a corresponding to the large-diameter portion 440b is provided at a distal end portion of the first connection pipe 420. The gap G between the first connection pipe 420 and the second connection pipe 440 allows the second connection pipe (inner cylinder) 440 to extend smoothly by its own weight when the second lock switch 431 is released. The sliding resistance is set to a value that does not increase the ventilation resistance (a loss due to a ventilation resistance in a pipe line due to the extension of the outer cylinder and the inner cylinder and a leakage loss from a gap). In order to reduce the sliding resistance, a material such as Teflon may be provided on one of the surfaces of the outer cylinder and the inner cylinder.

On the other hand, as shown in FIG.
When 0 is extended to the maximum stroke position, the large-diameter portion 440b and the seal portion 440e come into contact with the seal 420a, and have a maximum sealing effect, that is, substantially prevent air suction from the gap.

The large diameter portion 440 of the second connection pipe 440
b exhibits a certain sealing effect even when the second connection pipe 440 is at the intermediate stroke position,
The second connecting pipe 440 when moving in the first connecting pipe 420 by its own weight also has a function of restricting shaft swing and guiding the first connecting pipe 420 to move smoothly.

As another embodiment, FIG.
As shown in (d), the second connecting pipe 440 is connected to the tapered pipe 44.
Even if the gap G is set to 0c and the gap G is continuously changed, the same effect can be exerted.

Further, the relationship between the first connection pipe (outer cylinder) 420 and the second connection pipe (inner cylinder) 440 in both embodiments may be reversed so that a seal is provided on the second connection pipe 440 side. good. That is, the first tube has a small-diameter portion provided at the distal end portion, and the second tube has a seal corresponding to the small-diameter portion provided at the end opposite to the mouthpiece, When the second pipe connecting pipe is extended to the maximum stroke, the small diameter portion may be in contact with the seal to substantially prevent the suction of air.

According to the above embodiments, there is provided a vacuum cleaner having a connecting pipe length adjusting mechanism which is compact and excellent in safety.

Next, the structure of the sub handle will be described in detail with reference to FIG. FIG. 16 is an exploded perspective view showing a connected state of the sub-handle and the suction hose, and FIG. 17 is a partial perspective view and a partial cross-sectional view showing a structure for attaching a connecting pipe to the sub-handle.

First, a connection structure between the sub handle 600 and the suction hose 200 will be described with reference to FIG. In this embodiment, the pipe structure 601a is configured to be separated from other structures.
A main body mounting mechanism 610 for mounting the vacuum cleaner main body 100, a hose mounting mechanism 620 for mounting the suction hose 200, and a dust passage communicating the vacuum cleaner main body 100 with the suction hose 200. 6
30. And, a tubular pipe structure mounting portion 606 for mounting to the pipe structure 601a, a connecting pipe mounting structure 602 arranged in parallel with the pipe structure 601a via the pipe structure mounting portion 606, A main connector 603 for connecting the connection pipe mounting structure 602 to the pipe structure mounting portion 606
And a separation structure 608 composed of the sub-connecting body 604 and a resin, and the separation structure 608 and the pipe structure 601a are configured to be detachable.

In this embodiment, the pipe structure mounting portion 606 is formed in a tubular shape, and the pipe structure 601a is inserted into the tube structure mounting portion 606 and penetrated therethrough.
The main body mounting mechanism 610 provided on one end of the hose mounting portion 101a is mounted on the hose mounting portion 101. The pipe structure mounting portion 606 is formed on the inner surface of the pipe structure mounting portion 606 by a positioning protrusion 607 provided on the outer periphery of the pipe structure 601a so that the pipe structure mounting portion 606 does not come off to the suction hose side. Is provided with a fitting portion 609.

The separating structure 608 may be formed of a member which is separated into right and left and fixed by screws. Further, the pipe structure attaching portion 606 is not limited to a tubular shape, but may be any structure that can be detachably attached to the pipe structure 601a and can maintain a connected state firmly.

In this embodiment, the hose mounting mechanism 6
The protrusions 61 on the left and right of the pipe 617 projecting at one end of
1 is provided to prevent rotation when the main body mounting mechanism 610 is mounted on the hose mounting portion 101. A fixing mechanism 6 for fixing the connection between the main body mounting mechanism 610 and the hose mounting section 101 to the projection 611.
12 are provided.

The fixing mechanism 612 is formed by
A protection plate 614 that covers the recess 613, a seesaw switch 615 provided in the protection plate 614, and a spring 616 that keeps the fixing mechanism 612 fixed. Is done. The seesaw switch 615 has a convex button at one end and a fixed claw at the other end, and the protective plate 614 has a window for exposing the convex button and the fixed claw. Since the convex button and the fixed claw are provided so as to always protrude to the outer periphery by the spring 616, when the fixed button is attached to the hose mounting portion 101, the fixed claw is provided inside the hose mounting portion 101. Can be fitted and fixed in the recess.
To release the fitting, the convex button may be pressed.

The hose mounting mechanism 620 for mounting the suction hose 200 has a structure in which a connecting ring 230 provided at the end of the suction hose 200 is inserted and connected. That is, in this embodiment, the fixing ring 231 is attached to the end of the bellows hose, and is rotatable with respect to the fixing ring 231.
The connection ring 230 which is provided so as to protrude in the pipe axis direction from No. 1 is attached. A locking portion 232 is formed on the outer circumference of the connection ring 230 by using the elasticity of the resin. The locking portion 232 always protrudes in the outer circumferential direction. The outer wall of the dust passage 630 of the hose mounting mechanism 620 includes the locking portion 232. 23
2 is provided with a locking hole 621 to be fitted.

As a result, the connecting ring 230 is inserted into the hose mounting mechanism 620, and
The two are connected by fitting into the locking holes 621. According to this structure, since the suction hose 200 is rotatably attached to the sub-handle 600, it is possible to reduce the twist of the suction hose 200. Furthermore, in this embodiment, the fitting can be released by pushing the locking portion 232 inward from the locking hole 621, which is effective during maintenance.

In this embodiment, the pipe structure 601
And other structures can be separated from each other, but the pipe structure 601, the connecting pipe mounting structure 602, and the main connector 6
03 and the sub-connection body 604 may be integrally formed of resin.

According to the embodiment shown in FIG. 16, even if the separating structure 608 is removed, the
Since the function is not impaired, it can be easily removed if convenience in the vertical storage position is not required.
Further, the pipe structure 601a can be improved in versatility because the usability in the vertical storage position can be improved without a significant design change for attaching and detaching the pipe structure attachment portion 606. it can.

Next, referring to FIG. 17, the connecting pipe mounting mechanism 640 and the mounting section 401 provided on the connecting pipe 400 will be described.
The connection structure with will be described. In FIG. 17, as described above, the mounting portion 401 includes the convex mounting protrusion 410 provided on the back surface side of the connection pipe 400 and the fitting portions 411 protruding in the expansion and contraction direction and on both sides.

The fitting portion 411 is provided with a stopper portion 412 at an upper portion, and a concave groove 413 is formed from both sides to a lower side of the mounting projection portion 410, as shown in FIG. 17 (b). In the cross-sectional shape, both sides of the protruding portion are formed in a "T-shape", and in the side shape, the protruding tip portion is formed so as to protrude downward.

On the other hand, the connecting pipe mounting mechanism 640 is formed with a concave rail 641 along the longitudinal direction of the connecting pipe mounting structure 602. The rail 641 is formed by a pair of guide rails 642 projecting inward.
The guide rail 642 fits into the concave groove 413 and supports the mounting protrusion 410 from both sides. In the vertical storage posture, an inclined surface 643 for guiding the mounting protrusion 410 to the rail 641 is formed on the upper side of the rail 641.

According to this structure, as shown in FIG.
When the mounting portion 401 is to be inserted into the connection pipe mounting mechanism 640 from above, the lower fitting portion 411a of the mounting protrusion 410 first comes into contact with the inclined surface 643 and is guided by the rail 641. Further, the stopper portions 412 are fitted to the fitting portions 411b on both sides of the mounting protrusion portion 410, and are inserted until the stopper portion 412 comes into contact with the connection pipe mounting structure 602.

Therefore, when the connecting pipe mounting structure 602 is lifted upward through the sub-handle part 600, the stopper part 412 and the guide rail 642
Thereby, since the mounting portion 401 is held in the vertical direction and the horizontal direction, the connection pipe 400 can be pulled up. On the other hand, the connection pipe 4
00, the weight of the vacuum cleaner main body 100 cannot be held by the fitting structure of the connection pipe mounting mechanism 640 and the mounting portion 401. The connection pipe 400 can be pulled up by removing the fitting without lifting up the connection pipe.

On the other hand, when the vacuum cleaner 1 in the vertical storage position is in an oblique position, the vacuum cleaner held by the moving means 102 in the fitting portion between the connecting pipe mounting mechanism 640 and the mounting portion 401. Since a part of the stress according to the weight of the main body 100 is applied, the fitting portion between the rail 641 and the fitting portion 611 is distorted, and the fitting becomes difficult to be disengaged. The vacuum cleaner 1 in an oblique posture can be moved while holding 300.
The strength of the fitting may be adjusted so as to increase the contact surface between the rail 641 and the fitting portion 611 or adjust the fitting of the fitting so as to obtain an appropriate fitting stress. . The contact surface may be subjected to a surface treatment for increasing a coefficient of friction.

Next, the connecting pipe position holding means 140 will be described with reference to FIG. FIGS. 18A and 18B are explanatory views of the connection pipe position holding means. FIG. 18A is a side view of the vacuum cleaner in a vertical storage posture, and FIG. 18B is a sectional view taken along line AA of FIG.

In FIG. 18, in this embodiment, the connection between the vacuum cleaner main body 100 and the connection pipe 400 is sufficiently achieved by the connection between the connection pipe mounting mechanism 640 and the mounting section 401 provided on the connection pipe 400. However, in order to reduce the load on the connecting portion, a position below the connecting portion, that is, a state in which the connecting pipe 400 is attached to the sub-handle 600 in a substantially vertical posture. A pair of projections that hold the position below the connection pipe 400 at a position where the connection pipe 400 or the suction body 500 attached to the lower part of the connection pipe 400 and the upper surface of the vacuum cleaner main body 100 are in contact with each other. 141 is provided.

The connection pipe position holding means 140 is provided in the position shown in FIG.
This is opposed to the stress in the direction of arrow Q1 shown in FIG. For example, in the vacuum cleaner in the vertical storage posture of FIG. 18, when the hand handle 300 is held, the force for tilting the hand handle 300 to the right (arrow Q3) includes:
Since the vacuum cleaner main body 100 is easily fallen by the large wheels 104, the load applied to the connecting portion between the mounting portion 101 and the sub-handle portion 600 is not large.

In addition, the connecting pipe 400 or the suction body 500 is pressed against the upper surface of the cleaner body 100 due to the force of falling to the left (arrow Q2) in FIG. It is possible to reduce the load applied to the connecting portion of the 600. However, since the force for tilting the hand handle 300 in the left and right direction (arrow Q1) is a force for rotating the connection portion between the mounting portion 101 and the sub handle portion 600 as a center, a large load is applied to the connection portion. And a robust structure is required to prevent this.

Thus, in this embodiment, the connection pipe 40
A pair of protrusions 141 are provided at 0 or at a position where the suction body 500 is in contact with the upper surface of the vacuum cleaner main body 100 (the topmost portion in the cleaning posture) to prevent the shake in the left-right direction. This can reduce the unnecessary strength of the connecting portion and reduce the weight.

Next, a method of using the sub handle will be described with reference to FIG. 19A and 19B are explanatory diagrams of a state in which the vacuum cleaner 1 in the vertical storage posture is moved, and FIG. 19A is an explanatory diagram of a state where the conventional example is lifted, and FIG. 19B is a diagram illustrating the vacuum cleaner 1 of the present embodiment. FIG. 3C is an explanatory view of a state in which the vacuum cleaner 1 of the present embodiment is moved via moving means.

First, in FIG. 19A, the conventional example generally has a structure in which the connection pipe 400 is attached to the bottom side of the vacuum cleaner main body 100 in the vertical storage posture. In the conventional vertical storage posture, the attachment portion provided on the connection pipe 400 is directly attached to the distal end portion of the main body 100 of the electric vacuum cleaner. For this reason, when trying to lift the vacuum cleaner in the vertical storage position, the vacuum cleaner is lifted via the sub handle provided on the bottom surface (provided below the hose mounting portion) of the vacuum cleaner main body 100.

However, since the sub-handle is provided at a position deviated from the center of gravity of the vacuum cleaner in the vertical storage position, when the vacuum cleaner is held by the sub-handle, the vacuum cleaner in the vertical storage position. Must be held in an oblique position. In particular, since the vacuum cleaner falls from a vertical posture to an oblique posture when it is lifted, the suction hose 200 interferes with the vacuum cleaner, so that it is difficult to lift and balance.

On the other hand, as shown in FIG. 19 (b), the vacuum cleaner 1 according to this embodiment can be lifted via the sub-handle 600 near the position above the center of gravity of the vacuum cleaner 1. . In this case, the handle portion 660 is easy to grasp, and the vacuum cleaner main body 100 and the connection pipe 400 are separately supported on both sides in the longitudinal direction of the handle portion 660, so that it is easy to balance. Further, as shown in the figure, since the suction hose 200 can be held aside, the conveyance posture is improved.

Further, as shown in FIG. 19 (c), in this embodiment, the user holding the hand handle 300 holds the vacuum cleaner 1 in the vertical storage position obliquely around the large wheel 104. The vacuum cleaner 1 can be moved using the large wheel 104 while pulling down or holding down the held handle 300.

However, in the conventional example, the connection pipe 400
Is attached to the bottom surface side provided with the large wheels, so that the connection pipe hinders movement by the large wheels 104. In addition, since the conventional example has a structure in which the attachment portion of the connection pipe 400 is hooked on the vacuum cleaner main body 100 from above, the connection pipe 400 is detached when it is pulled obliquely. However, according to this embodiment, the vertical storage posture can be easily moved by simply tilting the vertical storage posture obliquely via the handle 300 at hand.

In the case where the suction hose is provided with a power supply line or a signal line and the power supply or the like is operated with the handle at hand, or in the case where the mouthpiece 500 is provided with a rotating brush drive motor, the sub-handle and the suction hose are connected to each other. A well-known connection terminal may be provided at a hose attachment portion of the cleaner body or at each connection portion of the connection pipe.

[0163]

According to the present invention, it is possible to provide a vacuum cleaner which can adjust the length of the connecting pipe with a simple operation and has a mechanism for adjusting the length of the connecting pipe which is excellent in operability. it can.

[Brief description of the drawings]

FIG. 1 is an external view showing a storage posture of a vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a perspective view of the vacuum cleaner shown in FIG. 1 in a normal cleaning state.

FIG. 3 is a rear perspective view of a hand handle of the electric vacuum cleaner shown in FIG. 1;

4 is an external view of a hand handle of the vacuum cleaner shown in FIG.

FIG. 5 is an exploded view of parts of a first tube of the hand handle of the electric vacuum cleaner in FIG. 1;

FIG. 6 is a cross-sectional view of a hand handle of the vacuum cleaner of FIG. 1;

FIG. 7 is an exploded view of parts of a second tube of the vacuum cleaner of FIG. 1;

FIG. 8 is a detailed view of a right side view of a hand handle of the vacuum cleaner in FIG. 1;

FIG. 9 is a view for explaining the operation of the hand handle.

10 is an exploded view of parts of the connection pipe of the vacuum cleaner of FIG. 1;

11 is an explanatory view of the operation of the connecting pipe of the vacuum cleaner of FIG. 1; FIG. 11 (a) is a transverse sectional view of a state where the connecting pipe is contracted;
(B) is a top view of the state where the connecting pipe was contracted.

FIG. 12 is a longitudinal sectional view of the vacuum cleaner of FIG. 1 in a state where a connecting pipe is contracted.

FIG. 13 is an explanatory diagram of the operation of the second lock switch in the embodiment of FIG. 1;

FIG. 14 is a view for explaining the operation of the connecting pipe telescopic switch mechanism of the hand handle and the connecting pipe in the embodiment of FIG. 1;

FIG. 15 is a diagram illustrating a relationship between a first connection pipe (outer cylinder) and a second connection pipe (inner cylinder) of the connection pipe in the present invention.

FIG. 16 is an exploded perspective view showing a connected state of a sub handle and a suction hose in the embodiment of the present invention.

FIG. 17 is a partial perspective view and a partial cross-sectional view showing a structure for attaching a connection pipe to a sub handle in the embodiment of the present invention.

FIG. 18 is an explanatory view of a connecting pipe position holding means in the embodiment of the present invention.

FIG. 19 is an explanatory diagram of a state in which the vacuum cleaner in the vertical storage posture according to the embodiment of the present invention is moved.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner, 100 ... Vacuum cleaner main body, 101 ... Hose attachment part, 102 ... Running means, 103 ... Leg part, 104
... large car wheel, 140 ... connection pipe position holding unit, 200 ... suction hose, 300 ... hand handle 301 ... trigger switch, 302 ... handle section, 305 ... connection pipe connecting portion 31
0: first pipe, 350: second pipe, 370: connecting pipe fixing mechanism, 371: lock switch, 380: connecting pipe telescopic switch mechanism, 383: first connecting rod, 384 ...
Second connecting rod, 400 connection pipe, 401 mounting part, 40
2. Connection pipe expansion / contraction mechanism section , 410 ... Mounting projection section, 411 ...
Fitting part, 420 ... first tube, 428 ... Lock pin push
, 428a: lock pin , 431: second lock switch
Pitch, 440 ... second tube, 500 ... suction body, 600 ...
Connection body (sub handle part), 601 ... pipe structure , 6
02: connecting pipe mounting structure, 603: main connecting body, 604 ...
Sub-connected body, 605: space, 610: body mounting mechanism,
620: Hose mounting mechanism, 630: Dust passage, 640
... Connection pipe mounting mechanism, 660 ... Handle, 1000 ...
Suction body, 1500: universal connection part, A1: central axis of connection pipe, A2: longitudinal direction of handle, A3: central axis of conveyance path, A4: central axis, A5: central axis, B1: rotation axis of large wheel.

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Masao Sunagawa 1-1-1 Higashitagacho, Hitachi City, Ibaraki Prefecture Hitachi Taga Electronics Co., Ltd. (56) References JP-A-8-280587 (JP, A) JP JP-A-5-95876 (JP, A) JP-A-11-32953 (JP, A) JP-A-11-19777 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9 / twenty four

Claims (4)

(57) [Claims] And 1. A vacuum cleaner body with a blower for Komu have suction dust, and a connecting member attached to the hose mounting portion of the vacuum cleaner main body, the attached one end to said connecting member said blower A flexible suction hose communicating therewith, a hand handle attached to the other end of the suction hose, a connection pipe attached to the hand handle and communicating with the suction hose, and a mouthpiece attached to the connection pipe A hose mounting portion for detachably attaching the connecting body to a distal end portion of the vacuum cleaner main body, wherein the connecting pipe has a transport path formed at one end thereof detachably connected to the hand handle. that a first tube, one end consists of a second tube other end is connected to the first tube is connected to the suction body, the hand wheel is provided with operating means, the operating Linked to the means
A first transmission means, wherein the first pipe body has a fixing means for fixing the second pipe body to the first pipe body and a second means for releasing the fixing state of the fixing means. comprising a transmission means, said first transmitting means and the second transmission means is connected by connecting the connecting tube and the proximal handle, wherein
By operation of the operating means is configured to release the fixed state of the fixing unit, the time to the maximum stroke of the second pipe, the sealing effect between the second tube and the first tube Is provided between the first tube and the second tube, and the second tube is in a state other than at the time of the maximum stroke.
Is slidably engaged with the first tube by its own weight.
A vacuum cleaner characterized by being related . 2. The vacuum cleaner according to claim 1, wherein the second pipe has a large-diameter portion provided at an end opposite to the mouthpiece, and the first pipe has a tip. A portion corresponding to the large-diameter portion, wherein the large-diameter portion contacts the seal to substantially prevent air suction when the second pipe connecting pipe is extended to a maximum stroke. An electric vacuum cleaner having a configuration. 3. The vacuum cleaner according to claim 1, wherein the first tube has a small-diameter portion provided at a tip portion, and the second tube is provided on a side opposite to the suction body. A seal corresponding to the large-diameter portion provided at an end, wherein the small-diameter portion contacts the seal when the second pipe connecting pipe is extended to a maximum stroke to substantially suck air. A vacuum cleaner characterized in that the vacuum cleaner is configured to block the vacuum cleaner. 4. The vacuum cleaner according to claim 1, wherein the second tube has a tapered structure in which the suction body side is minimized.