JP2002102125A - Suction tool for electric vacuum cleaner and electric vacuum cleaner using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve handling of an electric vacuum cleaner provided with a suction tool having an electrically driven rotating brush by widely turning the suction tool with respect to a surface to be cleaned by a twisting operation of a handle at hand. SOLUTION: The suction tool for the electric vacuum cleaner incorporates a rotating brush 13 for scraping dust, and a drive motor 14 for rotating the brush 13, wherein a connecting part 10 is provided at the rear. The connecting part 10 comprises a first linking body 24 turnably fitted with respect to a connecting face with a suction tool body, and a second linking body 25 rotating generally perpendicular to the rotating direction of the first linking body 24. A conductive wire 15 for supplying power to the drive motor 14 are arranged inside the first linking body 24 and the second linking body 25. Thereby, a low and narrow space such as a space under a desk or a bed can widely be cleaned and usability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner provided with a suction device that allows a user to operate an angle by operating a handle at hand.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 8 and 9, a suction tool used for this kind of vacuum cleaner has a rotary brush 42 for releasing dust adhered to a surface to be cleaned and the rotary brush 42. A drive motor (not shown) for rotating the brush 42 via a belt or a gear (not shown) is built in, and a free connection for communicating a cleaner body (not shown) and the suction tool body 41 to the rear is provided. The part 43 is connected. The free connecting portion 43 is composed of a rotating portion 45 and an arm portion 44, and is rotatably connected between the rotating portion 45 and the arm portion 44. The arm portion 44 is pivotally supported by the suction tool main body 41 and is connected to be rotatable in the vertical direction. Also,
A conductive wire 46 for supplying power from a cleaner body (not shown) to a driving motor (not shown) passes between the rotating shaft 47 and the outer shell of each of the rotating part 45 and the arm 44. I have.

[0003] In the above configuration, the cleaner body (not shown) is connected to the universal connecting portion 43 via an extension tube, a hand handle and a hose (none is shown), and the suction tool body 41 is connected.
Is moved along the surface to be cleaned to perform cleaning. At this time,
When cleaning under obstacles such as desks and beds,
With the suction tool main body 41 on the surface to be cleaned, the hand handle is twisted, that is, by turning the hand handle about the central axis of the hand handle, the hand-held handle is moved between the turning portion 45 and the arm portion 44. By rotating the extension tube in a direction parallel to the surface to be cleaned by turning about 90 degrees, it is possible to clean even a narrow portion such as under a bed.

[0004]

However, in the above-described conventional configuration, when the extension tube is tilted in a direction parallel to the surface to be cleaned, the rotating portion 45 of the free connecting portion 43 is bent. Therefore, the suction tool main body 4 with respect to the axial direction of the extension pipe.
1 is fixed in an inclined state, and when the cleaning operation is performed in the front-rear direction parallel to the axial direction of the extension pipe, the suction tool main body 41 is normally used because the cleaning surface collides with the surface to be cleaned and lacks operability. Because the extension tube is operated in an oblique state so that it is in the operation direction, the extension tube can not enter unless it is a wide space even in a narrow place such as under a bed,
The operation range was limited. In addition, the conductive wire 4
Even in the sixth process, since the process is performed outside the rotation shaft portion 47, there is also a disadvantage that the component itself becomes large.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. By twisting a hand handle with a suction tool in a state to be cleaned, the suction tool can be rotated over a wide range with respect to the surface to be cleaned. In particular, it is an object of the present invention to improve the usability and to make the suction device itself compact so that the cleaning operation can be performed particularly in a low place such as under a bed and in a narrow space.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a rotary brush having a suction port at a lower portion for scraping dust in the suction tool, and rotating the rotary brush. And a connecting portion is provided at the rear of the suction device main body, the connection portion is a first coupling body rotatably attached to a connection surface with the suction device main body, A first connector and a second connector rotatably connected in a direction substantially perpendicular to the rotation direction of the first connector, and a power supply for the drive motor inside the first connector and the second connector. It is a suction tool for a vacuum cleaner provided with a conductive wire for supplying the pressure.

[0007] With the above structure, by twisting the hand handle with the suction tool on the surface to be cleaned,
The extension pipe can be made parallel to the surface to be cleaned, and the suction tool body and the extension pipe can be made parallel, making it possible to clean even a narrow space under an obstacle such as a desk or bed. Become like

[0008]

According to the first aspect of the present invention, there is provided a rotary brush having a suction port at a lower portion for scraping dust in the suction tool, and for rotating the rotary brush. A first connecting body rotatably attached to a connection surface with the suction tool main body, wherein a connection portion is provided behind the suction tool main body,
A second connecting member rotatably connected in a direction substantially perpendicular to a rotation direction of the first connecting member, wherein the drive motor is provided inside the first connecting member and the second connecting member. In a state where a conductive wire for supplying power to the cleaning tool is provided, and a suction tool having a rotating brush driven by a drive motor is grounded to a surface to be cleaned,
By turning the hand handle, the suction tool main body and the extension tube are made parallel, and the suction tool is rotated over a wide range with respect to the surface to be cleaned so that it can clean under obstacles such as desks and beds. Made it possible.

According to the invention described in claim 2 of the present invention, the first connecting member and the second connecting member are provided with a conductive wire in a rotating shaft portion for rotatably connecting the first connecting member and the second connecting member. By reducing the bending of the conductive wire that occurs when the first connector and the second connector rotate, the load on the conductive wire due to the rotation can be reduced, and the durability can be improved.

According to the third aspect of the present invention, the conductive wire is provided in one of the left and right rotation shaft portions for rotatably connecting the first connection member and the second connection member. By reducing the bending of the conductive wire that occurs when the first connector and the second connector rotate, the load on the conductive wire due to the rotation is reduced, and the durability is increased. And at the same time, the assemblability can be improved.

According to the fourth aspect of the present invention, by combining the first upper member body divided into upper and lower parts and the first lower member body, the first connecting member and the first connecting member are separated from each other. Forming a rotating shaft portion of the connecting body of (1), and can easily process the conductive wire into the rotating shaft section or the first connecting body.

According to the fifth aspect of the present invention, the rotating shaft provided on the first connecting member includes a first lower member, a main rotating shaft, and a first upper member. The main rotation shaft is formed larger than the sub rotation shaft, and the main rotation shaft is formed with a cutout through which a conductive wire passes. It is possible to further improve the processability when processing the conductive wire to the portion.

According to the sixth and seventh aspects of the present invention, in the suction tool main body, the lower member and the intermediate member form a suction passage communicating with the connection pipe, and are connected to the first connector. The first member is rotatably held by the upper member and the lower member, and the upper member forms a space between the intermediate member and the intermediate member, in which a conductive wire is wired. In addition to securing a flexible space that is reliable and easy to assemble in a space, the cooling effect of the conductive wire is formed by forming a space in which the conductive wire from the connecting part is rotatably wired above the suction passage. And stable use can be achieved.

According to the invention described in claim 8 of the present invention, the rotation angle of the first connecting member is set to approximately 180 degrees, and the bending space of the conductive wire formed in the suction tool main body is formed by the first connecting member. By setting the rotation angle within a rotation angle range of about 180 degrees, the suction tool main body is grounded to the surface to be cleaned, and the left and right hand handles are approximately 9
The suction tool can be freely rotated even with a twisting operation of 0 degrees, and the suction tool can be rotated over a wide range with respect to the surface to be cleaned.

According to the ninth aspect of the present invention, the first connecting member is provided on the upper surface of the intermediate member forming the flexible space in which the conductive wire drawn out of the first connecting member moves during rotation. In the rotation direction of the, by forming a convex portion in which the conductive wire is in sliding contact, the conductive wire is applied to the convex rib of the intermediate member, and floating from the upper surface of the intermediate member to avoid contact of the conductive wire with the connection surface, The conductive wire can be protected, and the contact resistance between the intermediate member and the conductive wire during rotation can be reduced to allow smooth rotation.

According to the tenth aspect of the present invention,
By providing a conductive wire protection wall that overlaps with the intermediate member below the conductive wire outlet, that is, the conductive wire may be rubbed and damaged at the connection surface when the first coupling body is rotated. By providing a conductive wire protection wall for protecting the conductive wire on the surface, rubbing at the connection surface of the conductive wire can be eliminated, thereby protecting the conductive wire from damage and disconnection.

According to the eleventh aspect of the present invention,
The flexible connecting pipe is formed of a bellows hose, and the bellows hose is connected to a rotating member formed on the first connecting body to be integrated, so that the second connecting body can be rotated. , A connecting pipe that smoothly follows.

According to the twelfth aspect of the present invention,
Since the transparent member is formed on the intermediate member constituting the suction passage of the suction tool main body, it is possible to visually check the engagement of the conductive wire and the movement of the conductive wire during assembly.

According to the thirteenth aspect of the present invention,
An electric vacuum cleaner comprising an electric blower for sucking dust, a dust collection chamber for collecting dust, and a connection port communicating with the dust collection chamber, wherein the suction tool of the invention is connected to the connection port. Thus, the workability of the cleaning operation can be improved.

[0020]

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the cleaner main body 1 includes a dust collecting chamber 2 for collecting dust therein and an electric blower 3 and communicates with the dust collecting chamber 2 of the cleaner main body 1. Is connected to one end of a hose 4. At the other end of the hose 4 is attached a pipe 6 provided with a hand handle 5 serving as a grip portion above. One end of the extension pipe 7 is connected to the pipe 6 so as to communicate with the pipe 6 having the handle 5 at hand, and a suction tool 8 is attached to the other end of the extension pipe 7.

The exhaust passage for introducing the exhaust air from the electric blower 3 into the suction device 8 is separated from the suction passage, and is connected to a recirculating vacuum cleaner formed in a hose 4, a pipe 6 provided with a handle 5 at hand, and an extension pipe 7. The present invention is also applicable.

As shown in FIGS. 2 and 3, the suction device 8 is provided with a suction device main body 9 whose front-rear length is shorter than the left and right lengths, and is provided behind the suction device main body 9, and connects the extension pipe 7. Connection part 1
0, and a suction port 11 is provided substantially at the center of the lower surface of the suction tool body 9.
This suction port 11 communicates with a dust suction passage 12 extending in the longitudinal direction on the lower surface of the suction tool main body 9. In addition, a rotary brush 13 for scraping dust up into the dust suction passage 12.
And a drive motor 14 disposed rearward in the suction tool body 9.
The torque is transmitted through a belt. Also, a circuit board 16 for electrically connecting the drive motor and the conductive wire 15 from the connection portion across a central suction passage described later.
Is located on the opposite side of the drive motor.

A raising cloth 17 is attached to both front sides of the lower surface of the suction tool main body 9, and a rear roller 18 is rotatably mounted at the rear of the lower surface.

The suction tool main body 9 includes an upper member 19 and a lower member 20.
And a suction port 1 provided on the lower surface of the lower member 20.
In order to form a suction passage 21 that communicates with the connecting portion 10 behind the suction tool main body 9, an intermediate member 22 is disposed between the lower member 20 and the upper member 19, and the intermediate member 22 and the lower member 20 are combined. The enclosed space becomes the suction passage 21.

The intermediate member 22 has a dome portion 22-a forming the suction passage 21 and projects forward from the suction passage 22, covers the upper portion of the rotary brush 13, and has an upper member 19 and a lower member 20 at the front. And an arcuate bridge portion 22-b sandwiched between them. This bridge part 2
2-b holds the conductive wire 15 of the drive motor 14,
A processing passage 23 for wiring processing to the circuit board 16 via the upper portion of the rotating brush 13 is formed.

In the normal use state, the suction tool main body 9 is easily bent at the front portion or the upper portion when the suction tool main body 9 is hit on a wall or stepped on with a foot. For this reason, air leakage occurs in the suction passage 21 or a gap between the suction passage 21 and the surface to be cleaned changes, which is a major factor in changing dust collection performance. Therefore, by forming the intermediate member 22 at the center of the suction tool main body 9 as described above, a stable suction passage 21 can be secured.

Further, a part of the upper member 19 is
Has a slightly larger dome shape that covers the upper part of the suction passage formed in a dome shape, and forms a space between the intermediate member 22 and the dome shape. This space forms a space through which a conductive wire 15 from the connecting portion 10 to be described later can pass and in which the conductive wire 15 can move.

An outlet of a suction passage 21 is provided behind the suction tool main body 9 to which the connecting portion 10 is connected. The outlet has a rotation receiving portion 33 formed by the upper member 19 and the lower member 20.
Is located. The rotation receiving portion 33 is provided in the suction passage 21.
Are formed by an annular groove having a diameter larger than that of the outlet.

As shown in FIGS. 3 to 6, the connecting portion 10 includes a first connecting member 24 rotatably attached to a connecting surface with the suction tool main body 9, and a first connecting member 24. 24, which is rotatably mounted in a direction perpendicular to the direction of rotation of the second connecting body 24.
5, the first connecting member 24 and the second connecting member 25 are connected via a bellows hose 26 forming a flexible connecting pipe.

Further, the connecting portion 10 is connected to the first connecting body 24.
As shown in the drawing, a donut-shaped rotating portion having an annular groove fitted on the annular groove of the rotation receiving portion 33 is provided on the peripheral surface. In this manner, the labyrinth structure is formed by fitting the groove of the rotation receiving portion 33 with the groove of the rotation portion, and the rotation portion is connected while ensuring airtightness.

A bellows hose 26 is provided in the opening of the rotating member 27.
Is connected to the outlet of the suction passage 21 and the bellows hose 2
One end of 6 is communicated. The second end of the bellows hose 26 is
Is connected to a connecting portion 28 fixed to the connecting body 25 of

A substantially L-shaped arm portion 29 extends in both sides of the rotating member 27 forming a part of the first connecting member 24, and the second connecting member 25 is turned around the arm portion 29. A rotation shaft portion 30 for movement is provided, and a rotation receiving portion 33 provided on a second upper member body 31 and a second lower member body 32 constituting the second coupling body 25 is used as a rotation shaft. The part 30 is rotatably connected by sandwiching it. Further, the connecting portion 28 connected to the bellows hose 26 is also the second upper member 31 constituting the second connecting body 25.
And the second lower member body 32 for fixing.

The second upper member 31 and the lower member 32
A wall is provided on the left and right sides with a gap provided within a range that does not hinder the rotation of the bellows hose 26.

The conductive wire 1 to be processed in the connecting portion 10
Regarding 5, the first connecting body 24 is provided between the first upper member body 34 and the first lower member body 35 that are vertically divided including the rotating member 27 and the rotating shaft portion 30, It is a configuration for processing in that space. In particular, in the rotating shaft portion 30,
A rotation shaft 36 is formed on the first upper member 34 and a main rotation shaft 37 is formed on the first lower member 35, and the main rotation shaft 37 is larger than the sub rotation shaft 36. In addition, a groove for passing (holding) the conductive wire 15 is formed in the main rotation shaft portion 37 according to claim 5 of the present invention. The conductive wire 15 exposed from the rotating shaft 30 side of the first connector 28 has a terminal 38 provided at an end fixed to the connecting portion 28 of the bellows hose 26, and The space up to the terminal 38 is held by a rib or the like provided on the second lower member 32. Conductive wire 1 for processing inside connection portion 10
In 5, there is a method of distributing the inside of the first and second connected bodies 24 and 25 to the left and right. However, the processing is performed collectively on one side, thereby facilitating the assembling property and eliminating the biting of the conductive wire 15. I can do it.

The operation of the above configuration will be described. When the cleaner main body 1 is energized, the electric blower 3 rotates, and the dust sucked from the suction tool main body 9 is removed by the first connecting body 24 and the second connecting body 24.
Is drawn into the cleaner main body 1 through the bellows hose 26 connecting the connecting body 25 of the above and the extension pipe 7 and the hose 4 connected to the connecting portion 28.

Here, the rotatable second connector 25 is connected to the first connector 24, and the second connector 2
Since the twisting operation of the hand handle 5 is transmitted to the suction tool 8 through the extension pipe 7 connected to the suction tube 5, the twisting operation of the hand handle 5, that is, by rotating the hand handle 5 about the central axis of the hand handle 5, As the extension tube 7 rotates, the angle formed between the extension tube 7 and the first connector 24 changes.

With respect to the rotation of the extension pipe 7, the state in which the lower surface of the suction tool main body 9 faces the surface to be cleaned is maintained by the rotation of the first connection body 24, and the extension pipe 7 and the first connection body 24 are rotated. Since the second connecting body 25 rotates when the angle of the suction member changes, the state in which the lower surface of the suction tool main body 9 faces the surface to be cleaned can be similarly maintained.

Further, since the second connecting member 25 is rotatable so that the angle formed between the extension pipe 7 and the first connecting member 24 changes, the suction tool main body 9 can be largely rotated. For example, the axial direction of the extension pipe 7 and the longitudinal direction (left-right direction) of the suction tool main body 9 can be made substantially parallel.

In this case, the rotation range of the second connecting body 25 must be such that the suction tool main body 9 can be rotated at least to the vertical state with the suction tool main body 9 on the surface to be cleaned. In order to make the axial direction of the suction tool parallel to the surface to be cleaned, it is necessary that the suction tool main body 9 can be rotated at least to a horizontal state with the suction tool main body 9 placed on the surface to be cleaned. By allowing the rotation range of the suction pipe to be 180 °, the axial direction of the extension pipe 7 and the suction tool body 9 can be adjusted.
Can be made substantially parallel to each other, and the axial direction of the extension pipe 7 can be made parallel to the surface to be cleaned.

Thus, cleaning at a low portion such as under a bed can be performed because the extension pipe 7 can be lowered until it is substantially parallel to the surface to be cleaned. Since the extension pipes 7 are parallel to each other in the longitudinal direction (left-right direction), cleaning can be performed even in a narrow space, and cleaning can be performed in a wide range.

As shown in FIG. 7, on the upper surface of the dome portion of the intermediate member 22, the first connecting body 24 is rotated below the conductive wire 15 from the connecting portion 10 so as to be in sliding contact with the conductive wire. By providing the protruding rib 39 which is long in the direction, the conductive wire 15 can be kept away from the connection surface (by pushing up with the protruding rib 39), and the contact or biting of the conductive wire 15 to the rotating portion can be prevented, and the It can secure the property.

Further, as shown in FIG.
4, a conductive wire protection wall 40 protruding forward.
Is provided below the outlet of the conductive wire 15 drawn out from the connection portion 10 so as to overlap with the intermediate member.
When the conductive wire protection wall 40 is always rotated, the conductive wire protection wall 40 follows the movement of the conductive wire 15 to protect the conductive wire 15. Can be reliably protected.

Further, by using a transparent material as the material of the intermediate member 22, by looking into the suction port 11 of the lower member 20, the engagement of the conductive wire 15 at the time of assembly and the normal operation of the conductive wire 15 are achieved. It is possible to visually check whether the device is operating. Furthermore, by exposing a part of the intermediate member 22 to the upper surface of the suction tool main body 9, the rotation state of the rotating brush can be recognized.

[0045]

According to the present invention, the suction tool main body and the extension pipe are connected to each other by twisting the hand handle with the suction tool having the rotary brush driven by the drive motor being grounded to the surface to be cleaned. It provides a highly usable vacuum cleaner that enables the suction tool to rotate over a wide range with respect to the surface to be cleaned so that the suction tool can be rotated in parallel with the surface to be cleaned so that it can be cleaned under obstacles such as desks and beds. is there.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a bottom view of a suction device of the vacuum cleaner.

FIG. 3 is a top view of the suction tool without an upper member.

FIG. 4 is a cross-sectional view of the suction tool of FIG. 2 taken along line AA.

FIG. 5 is a partial cross-sectional view of a connection portion of the suction tool.

FIG. 6 is an expanded view of a first connector and a second connector of the suction device.

FIG. 7 is a perspective view of an intermediate member of the suction tool.

FIG. 8 is a perspective view showing a suction tool of a conventional vacuum cleaner.

FIG. 9 is an enlarged view of a portion (connection portion) of the suction tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 3 Electric blower 5 Hand handle 8 Suction tool 10 Connection part 13 Rotating brush 14 Drive motor 15 Conductive wire 19 Upper member 20 Lower member 21 Suction passage 22 Intermediate member 24 1st connection body 25 2nd connection body 26 Bellows hose 27 Rotating member 30 Rotating shaft 34 First upper member 35 First lower member 36 Secondary rotating shaft 37 Main rotating shaft 39 Convex rib 40 Conductive wire protection wall

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Katsuyuki Ota 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 72) Inventor Katsutaka Murata 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. 3B057 BA09 BA25 BA26 BA27 3B061 AA06 AA25 AA26 AD05 AE02

Claims (13)

[Claims] 1. A suction brush is provided at a lower portion, a rotary brush for scraping up dust in the suction tool, and a drive motor for rotating the rotary brush are built in, and a suction motor is provided behind the suction tool body. A connection portion, wherein the connection portion is rotatably attached to a connection surface with the suction tool main body, and is rotated in a direction substantially perpendicular to a rotation direction of the first connection body. And a second connector that is freely connected to the first connector.
A suction tool for a vacuum cleaner, wherein a conductive wire for supplying power to the drive motor is provided inside the connected body and the second connected body. 2. The suction device for a vacuum cleaner according to claim 1, wherein a conductive wire is provided in left and right rotation shaft portions that rotatably connect the first connection body and the second connection body. 3. The suction tool for a vacuum cleaner according to claim 2, wherein a conductive wire is wired in one shaft of a rotation shaft portion rotatably connecting the first connection body and the second connection body. . 4. A first connecting member and a rotating shaft portion of the first connecting member are formed by combining a first upper member member divided into upper and lower parts and a first lower member member. The suction tool for a vacuum cleaner according to any one of claims 1 to 3. 5. A rotating shaft provided on the first connecting body,
The first lower member has a main rotation shaft and the first upper member has a rotation shaft. The main rotation shaft is larger than the sub rotation shaft. The suction tool for a vacuum cleaner according to any one of claims 1 to 4, wherein a cutout portion through which the conductive wire passes is formed in the portion. 6. The lower member and the intermediate member form a suction passage communicating with the connection pipe, form a connection surface with the first connecting member, and form the first connecting member with the upper member and the lower member. The suction tool for a vacuum cleaner according to any one of claims 1 to 5, wherein the suction tool is rotatably held and has a space for wiring a conductive wire between the upper member and the intermediate member. 7. The suction tool for a vacuum cleaner according to claim 1, wherein a space is formed above the suction passage so as to rotatably wire a conductive wire from the connection portion. 8. The rotation angle of the first connector is set to approximately 180 degrees, and the bending space of the conductive wire formed in the suction tool main body is set to the first angle.
The suction tool for an electric vacuum cleaner according to any one of claims 1 to 7, wherein the suction tool is configured to be within a rotation angle range of about 180 degrees at which the connecting body of (1) rotates. 9. The conductive wire drawn from the first connector is slid in the direction of rotation of the first connector on the upper surface of an intermediate member forming a flexible space that moves during rotation. The suction tool for a vacuum cleaner according to any one of claims 1 to 8, wherein the contacting convex portion is formed. 10. The suction tool for a vacuum cleaner according to claim 1, wherein a conductive wire protection wall overlapping the intermediate member is provided below the conductive wire outlet in the first connector. 11. A flexible connection pipe comprising a bellows hose, wherein the bellows hose and a rotating member formed on a first connecting body are connected and integrated. The suction device for a vacuum cleaner according to claim 1 or 2. 12. The suction member according to claim 1, wherein an intermediate member constituting a suction passage of the suction tool main body is formed of a transparent material.
Item 6. A suction device for a vacuum cleaner according to Item 1. 13. A vacuum cleaner provided with a connection port connected to the vacuum cleaner suction tool according to claim 1. Description: