JP2003153833A - Suction port body and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction port body and a vacuum cleaner in which the operability of forward moving and backward moving of the suction port body can be improved with simple constitution. SOLUTION: In the suction port body 20 is provided with a suction port main body 21 having a suction chamber formed with a suction opening 23 at its lower surface and a coupling joint 30 which is provided at this suction port main body 21 and is communicated with the suction chamber and connected to the side of a cleaner body to be communicated with the dust collecting chamber of the cleaner body, the joint 30 has a first joint member 31 whose tip part is fitted to the suction port main body 21 in the state of being rotatable forward and backward and a second joint member 40 which is fitted to the rear part of this first joint member 31 in the state of being rotatable forward and backward. A driving wheel 38 for moving the suction port main body 21 is provided at the second joint member 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body having a suction port body and a drive wheel for moving the suction port body, and an electric vacuum cleaner having the suction port body.

[0002]

2. Description of the Related Art Conventionally, a suction port body in which a drive wheel is provided in a suction port body is known. The suction port body is provided with a drive wheel on the bottom surface of the suction port body, and the suction port body is moved forward by the rotation of the drive wheel. Therefore, the movement operability of the forward movement of the suction port body becomes very good.

[0003]

However, since the drive wheel is provided on the bottom surface of the suction port body, it comes into contact with the floor surface when the suction port body is retracted. Therefore, due to the rotation of the drive wheel, a force is exerted to move the suction port main body forward, a large force is required to retract the suction port main body, and the operability when retracting the suction port body is extremely poor. There was a problem.

Therefore, a suction port body has been proposed which switches the rotation direction of the motor to switch the rotation direction of the drive wheels when the suction port body is retracted.
It is necessary to provide a detection member for detecting the reverse movement and a switching circuit for switching between the forward and reverse rotations of the motor. Therefore, there is a problem that the number of parts increases and the cost becomes high.

The present invention has been made in view of the above problems, and an object thereof is to provide a suction port body and an electric vacuum cleaner capable of improving the operability of the suction port body in forward and backward movements with a simple structure. To provide.

[0006]

In order to solve the above-mentioned problems, the invention of claim 1 is a suction port body having a suction port body having a suction chamber having a suction opening formed in a lower surface thereof. A drive wheel for moving the main body is provided on the suction port main body so as to be vertically movable.

According to a second aspect of the present invention, there is provided a suction port main body having a suction chamber having a suction opening formed on a lower surface thereof, a suction port main body provided in the suction port main body, communicating with the suction chamber and connected to a cleaner main body side. In a suction port body provided with a connection joint communicating with a dust collection chamber of a cleaner body, drive wheels for moving the suction port body are provided in the connection joint.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an electric vacuum cleaner having a suction port body according to the present invention will be described below with reference to the drawings. [First Embodiment] In FIG. 1, reference numeral 10 denotes a main body of an electric vacuum cleaner. Inside the main body 10, a dust collecting chamber 12 and an electric blower 11 for making the dust collecting chamber 12 a negative pressure are provided. A dust collecting filter 13 is provided in the dust collecting chamber 12.

Reference numeral 15 is a hose one end of which is detachably connected to the electric vacuum cleaner body 10. A hand operation pipe 16 is provided at the other end of the hose 15, and a handle portion 17 is provided at the hand operation pipe 16. Has been. The handle portion 17 is provided with a hand operation portion 17A. The hand operation portion 17A includes an off switch S1 for turning off the power of the electric blower 11, and strong and weak switches S2, S3 for setting the power of the electric blower 11. Is provided.

An extension pipe 18 is detachably connected to the hand operation pipe 16, and a suction port body 20 is detachably connected to a distal end portion of the extension pipe 18.

As shown in FIGS. 2 to 5, the suction port body 20 is detachably connected to the suction port body 21 and the extension tube 18 and is provided on the rear portion of the body 21 so as to be vertically rotatable. And a tubular connecting joint 30.

Inside the suction port body 21, the suction opening 2 is formed on the bottom surface.
3 is formed, and a guide air passage pipe 25 that connects the suction chamber 24 and the connection joint 30 is provided. Upper wall 25 on the rear end side of the guide air duct 25
A and the lower wall 25B are formed in an arc shape centering on a shaft portion 32 described later, and the rear end portion of the guide air passage tube 25 is formed in a substantially rectangular cross section. Further, support walls 26, 26 facing the both side walls 25C on the rear side of the guide air duct tube 25 are formed in the suction port body 21, and the support walls 26, 26 have the shaft hole 2
7, 27 (see FIG. 7) are formed. Further, between the support walls 26, 26 of the top plate 21A of the suction port main body 21 is cut out, the rear wall 21B is similarly cut out, and a recess 28 is formed between the support walls 26, 26.

As shown in FIGS. 6 and 7, the connection joint 30 includes a tubular first joint member 31 and a tubular second joint member 40.
And have. The first joint member 31 includes a tip fitting portion 32 formed on the left side (in FIG. 6) and the fitting portion 32.
And a rear end fitting portion 33 formed on the right side of the. The tip fitting portion 32 has an upper wall portion 32A, a lower wall portion 32B, and flat plate-shaped side wall portions 32C, 32C which are formed in an arc shape around a shaft portion 34 described later, and both side wall portions 32C. , 32C
The cylindrical shaft portions 34, 34 protruding laterally are formed on the outer side of the.

As shown in FIG. 6, the rear end fitting portion 33 has an upper wall portion 35A, a lower wall portion 35B, and flat plate-shaped side wall portions 35C which are formed in an arc shape around a drive shaft 37 described later. , 3
Has 5C. The cross section of the air passage of the first joint member 31 is substantially rectangular. A pair of left and right holding walls 36, 36 (see FIG. 3) is formed on the lower surface of the lower wall portion 35B, and the holding walls 36, 36 are formed on the front side (left side in FIG. 5) of the holding walls 36, 36 and are connected to each other. Connection wall 36
A is formed, and the drive shaft 37 of the drive motor M is rotatably held by the holding walls 36, 36.

Drive wheels 38, 38 are mounted on both sides of the drive shaft 37, and a drive motor M is arranged between the drive wheels 38, 38. The drive motor M is designed to be driven together with the drive of the electric blower 11 of the cleaner body 10,
The drive wheels 38, 38 are rotated counterclockwise in FIG. 5 by driving the drive motor M to move the suction port body 21 forward.

The tip end side of the first joint member 31 is arranged in the recess 28 of the suction port body 21, and the first joint member is provided outside the rear end portion of the guide air duct 25 of the suction port body 21. A tip fitting portion 32 of 31 is fitted so as to be slidable in the front-rear direction. Further, the shaft portions 34, 34 of the first joint member 31 are rotatably inserted into the shaft holes 27, 27 of the support walls 26, 26 of the suction port body 21, and the first joint member 31 has the shaft portion 34. It is rotatable up and down about the center of the circles 34.

The first joint member 31 is rotatable in a range from the position shown in FIG. 5 to the position shown in FIG. 9, and the rotation exceeding the range is regulated by a regulation member (not shown). . The dimensions of each member of the drive shaft 37 are set so as to be located behind the suction port body 21 in FIG.

As shown in FIGS. 5 and 6, the second joint member 40 has a fitting portion 41 fitted to the rear end fitting portion 33 of the first joint member 31, and a fitting portion 41 on the right side of the fitting portion 41. It has a formed cylindrical portion 42 and a connection pipe 43 having one end fitted in the cylindrical portion 42 and rotatable about its axis 42J. The suction chamber 24 of the suction port main body 21 and the connection pipe 43 are connected to each other by the guide air passage pipe 25, the first pipe.
The joint member 31, the fitting portion 41 of the second joint member 40, and the tubular portion 42 communicate with each other. The connection pipe 43 is prevented from coming off the tubular portion 42 by a retaining member (not shown). The extension pipe 18 is detachably connected to the connection pipe 43.

As shown in FIGS. 5 and 6, the fitting portion 41 has an upper wall portion 41A and a lower wall portion 41B which are formed in an arc shape around the drive shaft 37. The lower portions of both side wall portions 45, 45 of the fitting portion 41 project downward from the lower wall portion 41B and the retaining walls 36, 3 of the first joint member 31
Holding walls 45A, 45A are formed on the outer side of 6, and the holding walls 45A, 45A rotatably hold both ends of the drive shaft 37 of the drive motor M.

The drive motor M is fixed to the holding wall portions 45A, 45A via a bracket (not shown). Also,
A connecting wall portion 45B is formed at a rear portion (right side in FIG. 5) of the holding wall portions 45A, 45A, and the holding wall portions 45A, 45A and the connecting wall portion 45B of the second joint member 40 and the holding wall of the first joint member 31 are formed. A drive wheel chamber that surrounds the drive wheels 38, 38 is formed by 36, 36 and the connecting wall 36A.

The fitting portion 41 of the second joint member 40 is located outside the rear end fitting portion 33 of the first joint member 31 and is located at the rear end fitting portion 3 thereof.
3 is slidably fitted along the front and rear. The second joint member 40 is rotatable about the drive shaft 37, and is rotatable in the range from the solid line position to the chain line position shown in FIG. Rotation beyond that range is restricted by a restriction member (not shown). Further, the second joint member 40 is set to require a predetermined force for its rotation due to a frictional force or the like, and the rotation of the first joint member 31 is free.

As a result, the first joint member 31 and the second joint member 31
The joint member 40 is integrated with the shaft portion 3 of the first joint member 31.
It rotates up and down about 4, 34 as a center, and the first joint member 31
After reaching the regulated position, the second joint member 40 moves the drive shaft 3
It will rotate about 7.

Next, the operations of the suction port body and the electric vacuum cleaner configured as described above will be described.

First, as shown in FIG. 1, the cleaner main body 10
Connect the hose 15 to the hose 15
The suction port body 20 is connected to 6 through the extension pipe 18. When the strong and weak switches S2 and S3 of the hand operation unit 17A are operated, the electric blower 11 is driven and the dust collection chamber 12 becomes negative pressure, and the hose 15, extension pipe 18, second joint member 40, first
The suction chamber 24 of the suction port body 21 becomes negative pressure via the joint member 31 and the guide air passage pipe 25.

Due to this negative pressure, dust is sucked together with the outside air from the suction opening 23 of the suction port body 21, and the dust and the outside air are sucked into the suction chamber 24, the guide air passage pipe 25, the first joint member 31, and the second joint. Member 40, extension tube 18 and hose 15
The dust is sucked into the dust collecting chamber 12 of the main body 10 via the above, and the dust is collected by the dust collecting filter 13.

On the other hand, when the electric blower 11 is driven, the electric motor M is also driven, and the driving wheels 38, 38 of the suction port body 20 are rotated by the driving of the electric motor M.

Now, by operating the hand operation pipe 16 of the hose 15, the first and second joint members 31, 40 rotate clockwise from the position shown in FIG. 8 around the shaft portions 34, 34 of the first joint member 31. The suction inlet main body 21 is pushed forward while rotating to. The clockwise rotation of the first and second joint members 31, 40 causes the drive wheels 38, 38 to contact the floor surface T, as shown in FIG. That is, the drive wheels 38, 38 descend from the position shown in FIG. And the drive wheels 38,38
Is rotated counterclockwise so that the suction port body 2
1 is moved forward. Therefore, the operation of moving the suction port body 20 forward becomes very easy.

In addition, at this time, the hand operation pipe 1 of the hose 15
When the connecting pipe 43 is pushed down a little by the operation of 6, the second joint member 40 is restricted from rotating clockwise from the position shown in FIG. 4 with respect to the first joint member 31 about the drive shaft 37. And the first joint member 31
Is regulated so as not to rotate in the clockwise direction from the position shown in FIG. 4, so that the first joint member 31 and the second joint member 40 rotate slightly clockwise with the drive shaft 37 as a fulcrum, and the suction is performed. The mouth body 21 is in a state of floating from the floor surface T.
For this reason, adsorption to the floor surface T of the suction opening 23 of the suction port main body 21 is prevented, the forward movement of the suction port main body 21 becomes easier, and the operability of the hand operation pipe 16 is further improved.

When the operating pipe 16 is pulled toward the hand, the first joint member 31 becomes free around the shaft portions 34, 34, so that the first joint member 31 and the second joint member 40 move toward the shaft. While rotating counterclockwise around the parts 34, 34, the suction port body 21 is rearward (right side in FIG. 8).
Will be moved to. At this time, the counterclockwise rotation of the first joint member 31 and the second joint member 40 causes the drive wheels 38, 38 to separate from the floor surface T, as shown in FIGS. 8 and 9. That is, the drive wheels 38, 38 rise. Drive wheel 3
By moving 8 and 38 away from the floor surface T, the rearward movement of the suction port main body 21 becomes very easy, and the operability of the hand operation pipe 16 is improved.

Further, when the operation pipe 16 at hand is pulled at hand,
Since the first joint member 31 is restricted from rotating in the counterclockwise direction about the shaft portions 34, 34 from the position shown in FIGS. 8 and 9, the second joint member 31 as shown in FIGS. The joint member 40 rotates counterclockwise about the rotation shaft 37, and the suction port body 21 moves further rearward.

As described above, when the suction port body 20 moves forward, the drive wheels 38, 38 contact the floor surface T and the suction port body 2
Since the drive wheels 38, 38 are separated from the floor surface T when the suction port body 1 is moved forward and the suction port body 20 is moved backward, the operability of the forward movement and the reverse movement of the suction port body 20 is very good.
Further, since the drive wheels 38, 38 are only provided on the first joint member 31, the structure of the suction port body 20 is extremely simple. [Second Embodiment] FIGS. 12 and 13 show a suction port body 50 of a second embodiment. This suction mouth 50
Is a pipe-like connection joint 52 provided at the rear portion of the suction port main body 51 so as to be rotatable in the front-rear direction, and the drive wheels 38, 38 and the drive motor M are attached to the connection joint 52. The connection joint 52 rotates back and forth around the shaft 53, and the extension pipe 18 is connected to the connection joint 52. 5
Reference numeral 4 denotes a rotary cleaning member arranged in the suction chamber 24, and 55 denotes an intake port. The rotary cleaning member 54 is rotated by the air sucked from the intake port 55.

The suction port body 50 of the second embodiment is also the first
Similar to the suction port body 20 of the embodiment, when the suction port body 51 moves forward, the connection joint 52 rotates clockwise around the shaft 53 so that the drive wheels 38, 38 contact the floor surface T. When the suction port main body 51 comes in contact with and moves backward, the connection joint 5
Since the drive wheels 38, 38 are separated from the floor surface T by the counterclockwise rotation of the shaft 2 about the shaft 53, the operability of forward and backward movement of the suction port body 50 becomes very good.

Further, the suction port body 50 of the second embodiment is also simple in structure because the drive wheels 38, 38 are only provided on the connection joint 52. [Third Embodiment] FIG. 14 shows the suction port body 60 of the third embodiment.
Is shown. The suction port body 60 has a pipe-shaped connection joint 62 attached to the rear portion of the suction port main body 61, and the drive wheel 38 and the drive motor M attached to the connection joint 62.

In the suction port body 60 of the third embodiment, the connection joint 62 does not rotate, but when the suction port main body 61 is pushed and advances, the connection joint 62 with respect to the floor surface T moves forward. The angle formed becomes smaller and the drive wheels 38 come into contact with the floor surface T. This is because the suction port body 61 has the drive shaft 3
This is because it rotates clockwise about 7.

When the suction port main body 61 is further advanced, the suction port main body 61 floats from the floor surface T as shown in FIG.

When the suction port main body 61 is moved rearward, that is, when the hand operation pipe 16 (see FIG. 1) is pulled forward, as shown in FIG. 16, as the suction port main body 61 moves backward, a connection joint for the floor surface T is formed. The angle formed by 62 increases, and the drive wheels 38 separate from the floor surface T.

As described above, when the suction port body 60 moves forward, the drive wheel 38 contacts the floor surface T to move the suction port body 61 forward, and when the suction port body 60 moves rearward, the driving wheel 38 is driven. Since the wheel 38 is separated from the floor surface T, the operability of the suction port body 60 in forward and backward movement is very good.

[0038]

As described above, according to the present invention, it is possible to improve the operability of forward and backward movement of the suction port body with a simple structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an electric vacuum cleaner according to the present invention.

FIG. 2 is a perspective view showing a suction port body according to the present invention.

FIG. 3 is a bottom view of the suction port body shown in FIG.

FIG. 4 is a side view of the suction port body of FIG.

5 is a vertical cross-sectional view showing the configuration of the suction port body of FIG.

6 is a side view showing a configuration of a connection joint of the suction port body of FIG.

FIG. 7 is a front view showing the connection joint of FIG.

FIG. 8 is an explanatory diagram showing a state when the suction port body is moved rearward.

9 is a vertical cross-sectional view showing the suction port body of FIG.

FIG. 10 is a side view showing a state in which the suction port body is further moved rearward.

11 is a vertical cross-sectional view of the suction port body shown in FIG.

FIG. 12 is a plan view showing a suction port body according to a second embodiment.

FIG. 13 is a vertical cross-sectional view showing a configuration of a suction port body according to a second embodiment.

FIG. 14 is a side view showing a suction port body according to a third embodiment.

15 is an explanatory diagram showing a state in which the suction port body shown in FIG. 14 has been moved forward.

FIG. 16 is an explanatory diagram showing a state when the suction port body is moved rearward.

[Explanation of symbols]

20 Suction mouth 21 Suction port body 23 Suction opening 24 Suction chamber 30 connection fittings 31 First joint member 38 drive wheels 40 Second joint member

[Procedure amendment]

[Submission date] November 30, 2001 (2001.11.
30)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 4

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 6

[Correction method] Change

[Correction content]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

According to a second aspect of the present invention, there is provided a suction port main body having a suction chamber having a suction opening formed on a lower surface thereof, a suction port main body provided in the suction port main body, communicating with the suction chamber and connected to a cleaner main body side. In a suction port body provided with a connection joint communicating with a dust collection chamber of a cleaner body, drive wheels for moving the suction port body are provided in the connection joint. In the invention of claim 6, the suction opening is formed on the lower surface.
In a suction port body having a suction port body having a suction chamber,
A drive wheel for moving the suction port main body is provided
When the mouth body is pushed forward, the drive wheels come into contact with the floor surface and
The drive wheel floats from the floor when the main body is pulled backward
It is characterized by

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tatsuya Ikegami             Toshiba Tec, 43 Horiyamashita, Hadano City, Kanagawa Prefecture             Hadano Factory Co., Ltd. F-term (reference) 3B057 BA09 BA27                 3B061 AA06 AA24 AA32

Claims (7)

[Claims] 1. A suction port body comprising a suction port body having a suction chamber having a suction opening formed on a lower surface thereof, wherein a drive wheel for moving the suction port body is provided on the suction port body so as to be vertically movable. A suction mouth body characterized by the above. 2. A suction port body having a suction chamber having a suction opening formed on a lower surface thereof, and a suction body provided on the suction port body, communicating with the suction chamber and connected to a cleaner body side to collect the cleaner body. A suction port body including a connection joint communicating with a dust chamber, wherein a drive wheel for moving the suction port body is provided in the connection joint. 3. The suction port body according to claim 2, wherein the connection joint is rotatable in the front-rear direction. 4. A first joint member having a tip end portion attached to a suction port body so as to be vertically rotatable, and the connection joint is attached to a rear portion of the first joint member so as to be vertically rotatable. The suction port body according to claim 3, further comprising a second joint member, wherein the drive wheel is provided on the second joint member. 5. The suction port body according to claim 4, wherein the drive wheel is provided on a rotation shaft of the second joint member. 6. A suction port body characterized in that when the suction port body is pushed forward, the drive wheel comes into contact with the floor surface, and when the suction port body is pulled backward, the drive wheel floats from the floor surface. 7. An electric vacuum cleaner comprising the suction port body according to any one of claims 1 to 6.