JPH08107846A - Electric vacuum cleaner - Google Patents

Abstract

PURPOSE: To prevent a hose from being catched without generating a twist even when a long hose is used by a method wherein a plurality of hose elements are mutually rotatably connected with the axial direction of the hose element as a central axis, and the outer diameter of a connecting means is made the same as the outer diametrical dimension of the hose element or lower. CONSTITUTION: A hose 8 is formed into a specified length by connecting a plurality of hose elements 28 of a specified length by providing a connecting means 30 for each hose element 28. Then, for the connecting means 30 of the hose 8, a first end tube 31a and a second end tube 31b which are provided on the ends of the hose element 28 to be connected to each other are connected in such a manner that a connecting seal member 32 is rotatably fastened with the axial direction of the hose element 28 as a central axis. Also, the outer diameter of the connecting means 30 is equalized to the dimension of the outer diameter of the hose element 8 or lower. By doing so, one of the hose elements 8 being connected by the connecting means 30 with each other is rotatable to the other with the axial direction as the central axial direction, and the hose 8 can be prevented from being twisted, and the connecting means 30 can be prevented from being catched by a furniture, etc., during a cleaning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner in which a plurality of hose bodies are rotatably connected about an axial direction as a central axis.

[0002]

2. Description of the Related Art FIG. 1 shows a conventional vacuum cleaner.
As shown in FIG. 7, a hose 152 is rotatably attached to an electric vacuum cleaner body 151 that defines a dust collection chamber on the negative pressure side of an electric blower for dust collection so as to communicate with the dust collection chamber, and the hose 152 is driven by the electric blower. A configuration is known in which the air is sucked into the dust collection chamber to collect the dust.

On the other hand, as an electric vacuum cleaner provided with a take-up drum for winding a hose, for example, Japanese Utility Model Laid-Open No. 53-114162.
The configurations described in Japanese Patent Application Laid-Open No. Hei 5-337063 and Japanese Patent Application Laid-Open No. 5-337063 are known.

The vacuum cleaner disclosed in Japanese Utility Model Laid-Open No. 53-114162 has a cylindrical winding drum around which a hose is wound and a cylindrical cord reel around which a power cord is wound, which are coaxial with each other. In the winding drum, a dust collection chamber is defined on the central axis, a suction port is formed on the outer peripheral surface, and a hose body is connected to this suction port to communicate with the dust collection chamber.

Further, the electric vacuum cleaner disclosed in Japanese Patent Laid-Open No. 5-337063 rotatably supports a cylindrical winding drum that winds a hose by driving a motor.

[0006]

However, in the vacuum cleaner shown in FIG. 17, although the hose 152 is rotatably connected to the vacuum cleaner body 151, the hose 15
When cleaning by holding the tip of 2, the hose 152 may rotate and the hose 152 may be twisted.
Twisting tends to occur when 2 is lengthened.

In the vacuum cleaner disclosed in Japanese Utility Model Laid-Open No. 53-114162 and Japanese Patent Laid-Open No. 5-337063, the hose rotates when the winding drum is rotated to wind or discharge a long hose. Then, the hose may be twisted. Further, when the hose is twisted during cleaning, the hose tries to return to its original state without being twisted, which makes cleaning with the hose difficult.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric vacuum cleaner which does not twist even if a long hose is used and which can prevent the hose from being caught.

[0009]

The electric vacuum cleaner of the present invention comprises:
An electric blower body for collecting dust and an electric cleaner body having a dust collecting chamber provided on the negative pressure side of the electric blower for collecting dust, and a flexible body provided in the electric cleaner body in communication with the dust collecting chamber. A plurality of hose bodies having: and connecting means rotatably connected to each other around the axial direction of the hose bodies and having an outer diameter equal to or smaller than the outer diameter of the hose body. is there.

[0010]

In the electric vacuum cleaner of the present invention, the outer diameter of the connecting means for connecting the plurality of hose bodies so as to be rotatably connected to each other about the axial direction of the hose body is equal to or less than the outer diameter of the hose body. Since it is formed on one side, one of the hose bodies connected to each other by the connecting means can be rotated with respect to the other about the axial direction as the central axis direction, so that twisting does not occur and the connecting means is prevented from being caught on furniture etc. during cleaning. To do.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the vacuum cleaner of the present invention will be described below with reference to the drawings.

In FIGS. 4 to 8, reference numeral 1 denotes an electric vacuum cleaner body. The electric vacuum cleaner body 1 has a bottom main body case 2 in the shape of a square cylinder with a bottom whose upper surface is opened and whose lower surface is closed, and whose lower surface is opened. An upper body case 3 which is a rectangular tube and is joined to the upper end of the lower body case 2 to close an opening on the upper surface of the lower body case 2, and a lid 4 which opens and closes an upper surface opening 3a of the upper body case 3. The main body case 5 is formed in the shape of a hollow box.

In the vacuum cleaner body 1, a rectangular hose port 7 whose longitudinal direction extends vertically is formed on the front surface of the upper body case 3, and a hose 8 is formed.
A locking means (not shown) for removably locking the grip portion 9 is provided. Further, on the rear surface of the upper main body case 3 opposite to the side where the hose port 7 is opened, there is provided a box-shaped accessory storage section 11 which is opened upward. And, in this accessory storage section 11, a mounting flange 12 is provided,
This mounting flange 12 is a crane mouth 13 and a furniture brush not shown,
Accessories such as the suction port body 14 and the extension pipe 15 are held. The accessory storage unit 11 may be provided with a lid or the like that opens and closes the opening on the upper surface in order to prevent dust and the like from entering.

Further, in the vacuum cleaner main body 1, a cushioning member 16 such as rubber or soft urethane is provided at the lower portion of the front surface, which is the side where the hose port 7 of the lower main body case 2 is opened,
A driven wheel 17, which is rotatably supported along a direction orthogonal to the opening direction of the hose opening 7, is provided at the lower portion of the rear side surface of the upper main body case 3 opposite to the opening side of the hose opening 7. ing.

Further, on the upper surface of the upper main body case 3, a handle hole portion which is elongated in the vertical direction is formed at a substantially central portion near the edge of the side surface.
18 is provided, and the handle portion 19 is slidably inserted into the handle hole portion 18. And this handle part 19
Is a grip of a substantially slender rod 20 to be gripped, and this grip 20
Both ends in the longitudinal direction of the handle are formed in a substantially U-shape with the leg portion 21 bent in the same direction, and the leg portion 21 is vertically slidably inserted into the handle hole portion 18, and the handle portion is Reference numeral 19 is provided so as to be movable back and forth along the up-down direction of the upper body case 3. The handle portion 19 is maintained in a state where the handle portion 19 is pulled out by a stopper or the like.

The vacuum cleaner body 1 has a cushioning member 16
And in the normal state when it is placed on the floor F by the driven wheels 17,
When the electric vacuum cleaner body 1 is moved in a state of being stopped due to friction between the cushioning member 16 and the floor surface F, as shown in FIG. The driven wheel 17 is caused to travel by an operation such as pushing or pulling the handle portion 19 in a state of being separated from.

On the inner surface side of the upper body case 3, as shown in FIG. 4, there is provided a guide portion 24 which forms a drum chamber 23 having an inner peripheral surface of a substantially cylindrical shape. A part of the guide portion 24 is cut out so as to be continuous with the peripheral edge of the hose opening 7, and the drum chamber 23 on the inner peripheral side is communicated with the outside through the hose opening 7.

Further, as shown in FIGS. 7 and 8, the guide portion 24 is provided with a roller holding portion which is located in the vicinity of both end edges of the hose port 7 in the vertical direction and which projects inward in a wall shape.
25 are formed so as to face each other, and these roller holding portions 2 that face each other
Between 5 and 25, a pair of hose rollers 26 are rotatably supported along the both side edges of the hose port 7 in the vertical direction.

As shown in FIG. 7, the hose 8 has a flexible and bellows-shaped hose body 28, and is rotatable at one end of the hose body 28 via a rotary pipe 28a. It is composed of a fitted grip portion 9, and the grip portion 9 is formed so that the hose port 7 cannot be inserted therethrough.

Further, as shown in FIGS. 1 and 2, the hose 8 is formed to have a length of 6 m, for example, by providing a connecting means 30 for each hose body 28 having a length of 1 to 2 m. ing. The connecting means 30 of the hose 8 includes a first end pipe 31a and a second end pipe 31b provided at the mutually connected ends of the hose bodies 28, 28, respectively. It is configured so as to be rotatable about a direction as a central axis and to be engaged by an elastic connecting seal member 32 made of rubber or soft synthetic resin.

The first end pipe 31a is formed of a hard synthetic resin into a substantially cylindrical shape, and the first connecting mechanism portion 34a is formed of a soft synthetic resin such as soft vinyl chloride into a substantially cylindrical shape. And a hose connection 35.

The first connecting mechanism portion 34a has a tubular portion 36 fitted to the inner peripheral surface of the hose body 28.
A flange portion 37a projecting like a flange is formed in an annular shape on the outer peripheral surface at one end in the axial direction of the tube 36 at a height approximately the same as the wall thickness of the hose body 28. Further, on the outer peripheral surface of the tubular portion 36 of the first coupling mechanism portion 34a, a groove-shaped connection groove portion 38 is formed along the circumferential surface direction. In addition, at the end portion of the tubular portion 36 on the side of the flange portion 37a,
A substantially cylindrical first mechanism portion 39a is formed coaxially with the tubular portion 36 with its inner circumferential surface being the same as the inner circumferential surface of the tubular portion 36. Further, the outer peripheral surface of the first mechanism portion 39a is provided with a first engaging recess 40a in a groove shape along the peripheral surface direction.

The hose connecting portion 35 is the first connecting mechanism portion.
It is formed in a substantially tubular shape similar to the tubular portion 36 of 34a, and at one end in the axial direction is formed a connecting claw portion 42 that engages with the connecting groove portion 38 of the first connecting mechanism portion 34a. In addition, the hose connection 35
A plurality of connecting pins 44, which engage with the bellows groove portion 43 formed in a spiral shape on the inner circumferential surface side of the bellows-shaped hose body 28, are formed in a spiral shape corresponding to the spiral of the bellows groove portion 43 on the outer peripheral surface thereof. Has been done.

On the other hand, the second end pipe 31b is the first end pipe 31b.
Similar to 31a, it is composed of a second coupling mechanism portion 34b formed of a hard synthetic resin in a substantially cylindrical shape and a hose connection portion 35 formed of a soft synthetic resin such as soft vinyl chloride in a substantially cylindrical shape. ing.

The second connecting mechanism portion 34b has a cylindrical portion 36 having a flange portion 37b and a connecting groove portion 38 similar to those of the first connecting mechanism portion 34a. Further, at the tip of the collar portion 37b, a second mechanism portion 39b having a diameter larger than that of the tubular portion 36 and having substantially the same outer peripheral surface as the tip of the collar portion 37b and substantially coaxial with the tubular portion 36 is provided as a first connecting mechanism. The first mechanism portion 39a of the portion 34a is rotatably fitted. Further, on the inner peripheral surface of the second mechanism portion 39b, a first connecting mechanism portion is formed in a band shape along the peripheral surface direction.
A second engaging recess 40b having the same shape is provided so as to face the first engaging recess 40a provided in the first mechanism portion 39a of 34a. Further, a mounting port 45 is formed through the outer peripheral surface of the second mechanism portion 39b so as to be continuous with the second engaging recess 40b.

A hose connecting portion 35 similar to the hose connecting portion 35 attached to the first connecting mechanism portion 34a is attached to the second connecting mechanism portion 34b.

Further, the first and second engaging recesses 40a, 40b of the first end pipe 31a and the second end pipe 31b, which are rotatably superposed and fitted to each other, are defined so as to face each other. The first end pipe 31a and the second end pipe 31b forming a pair with which the connecting seal member 32 is fitted to each other are fitted in the engagement hole portion 40 while being airtightly retained and retained. There is.

The connecting seal member 32 is shown in FIGS.
As shown in FIG. 3, it is formed of rubber, soft synthetic resin, or the like into an elongated strip shape having a substantially rectangular cross section. Further, the connecting seal member 32 is formed with an airtight protrusion 47 which has a substantially triangular cross section and protrudes like a wall at a ridge portion in the longitudinal direction. Further, at one end in the longitudinal direction of the connecting seal member 32, an operation protrusion 48 having substantially the same shape as the mounting port 45 is formed thickly. The length of the connecting seal member 32 is substantially the same as the length of the engaging hole 40 in the longitudinal direction.

The connecting seal member 32 is inserted into the engagement hole 40 from the end opposite to the operation protrusion 48 through the mounting port 45, and the entire surface abuts in the engagement hole 40. Without airtight protrusion 47
2 is crushed and elastically deformed, and the airtight projection 47 abuts airtightly.
As shown in, the insertion-side tip portion abuts on the end portion of the operation protrusion 48, and the connection seal member 32 is formed in a ring shape.
Further, the operation protrusion 48 is inserted into the mounting opening 45 so as to be flush with the outer peripheral surface of the second mechanism portion 39b and closed, so that the first end pipe 31a and the second end pipe 31b are separated from each other. The hose 8 is rotatably and airtightly connected, and the outer diameter of the connecting means 30 is approximately the same as the outer diameter of the hose body 28, that is, the outer peripheral surface of the connecting means 30 is substantially flush with the outer peripheral surface of the hose body 28. Has been done.

On the other hand, in FIGS. 4 to 6 and 8, 51 is a winding drum, which has a dust collecting opening 51a at one end and an exhaust opening 51b at the other end. Flange portions 53 projecting in the outer peripheral direction are provided on both circumferential edges of the cylindrical body portion 52 in the axial direction, and are formed in a bobbin shape. Further, a guide wall portion 54 is provided on the outer peripheral surface of the body portion 52 in a spiral shape so as to project in a direction orthogonal to the outer peripheral surface, and the hose 8 is guided by the guide wall portion 54 to guide the body portion 52.
The hose 8 is wound around the outer peripheral surface in a spiral shape so that the hose 8 is located between the guide wall portions 54, 54.

Further, as shown in FIGS. 4, 5 and 8, a rail portion 55 formed in a groove shape toward the outer periphery is provided on the outer peripheral edge of the flange portion 53 of the winding drum 51. .

Further, the winding drum 51 is formed with a dome portion 56 projecting downward in a substantially cylindrical shape so as to cover the exhaust opening 51b at the inner peripheral edge of the lower end in the axial direction.
At the tip of the drum pulley, a cylindrical pulley that is coaxial with the body 52
57 are provided. Further, a cylindrical tubular body 58 is fitted on the center axis of the drum pulley 57. The dome portion 56 and the drum pulley 57 are formed with a plurality of ventilation openings 59 communicating with the central axis of the body portion 52.

Further, a bearing 60 is provided on the central axis of the lower main body case 2 substantially in the center of the upper surface thereof, and a bearing portion 61 projecting upward in a cylindrical shape is formed. Also, the upper body case 3
As shown in FIG. 5 and FIG. 6, at the corners on the inner surface side of the upper and lower parts, holding portions 62 projecting inward in a substantially triangular wall shape are respectively provided, and in the vicinity of the tips of these holding portions 62, the outer circumference is provided. Holding pulley 63 whose surface abuts and holds the rail 55 of the winding drum 51
Are rotatably provided.

The take-up drum 51 has a drum pulley 57.
The cylindrical body 58 is the bearing 60 of the bearing portion 61 of the lower body case 2.
And the holding pulley 63 on the rail 55 of the flange 53.
Are engaged and are rotatably supported in the drum chamber 23 in the main body case 5. The body of the winding drum 51
The distance between the peripheral surface of 52 and the inner peripheral surface of the guide portion 24 is slightly larger than the outer diameter of the hose 8 wound on the winding drum 51, that is, the inner peripheral side of the hose 8 contacts the body portion 52. The hose 8 is prevented from coming into contact with the inner peripheral surface of the guide portion 24 when wound around the winding drum 51.

A gear box 65 is provided on the upper surface of the lower main body case 2 as shown in FIGS. 4, 6 and 8, and a motor Ma is attached to the gear box 65. In addition, the gearbox 65 has a small diameter pulley.
A reduction pulley 68, which is formed by coaxially forming a 66 and a large-diameter pulley 67, is rotatably provided. And the output shaft of the motor Ma
An output pulley 70 is rotatably supported by 69, and an endless output belt 71 is wound around the output pulley 70 and the large-diameter pulley 67 of the reduction pulley 68.
An endless deceleration belt 72 is wound around 66 and the drum pulley 57 of the winding drum 51, and the winding drum 51 is driven by the motor Ma.
Can be rotated in both directions.

Further, as shown in FIG. 4, on the inner peripheral side of the upper end which is one end side of the body part 52 of the winding drum 51, a duct part which opens a communication hole 74 on the axially upper end side of the body part 52 is provided. 75 is sectioned and formed, and in this duct portion 75, as shown in FIG. 10, a connection duct 76 is housed. The connecting duct 76 is formed in a bent tubular shape, and one end thereof is packed 77.
Airtightly connected to the communication hole 74 via the
It is arranged on the outer peripheral surface side of the body portion 52 of 51 so as to open in the tangential direction, and the hose body 28 of the hose 8 is fitted and fixed to the other end side.

On the other hand, the lid 4 is composed of an outer lid portion 79 and an inner lid portion 80, the outer lid portion 79 is formed in a disk shape, and a handle portion is provided on the upper surface.
81 is formed, and the connecting means 82 is provided in the approximate center of the lower surface. Further, the inner lid portion 80 is formed hollow from a substantially disc-shaped upper inner lid portion 83 having an opened lower surface and a substantially disc-shaped lower inner lid portion 84 having an opened upper surface. Then, the upper inner lid portion 83 of the inner lid portion 80
As shown in FIG. 4 and FIG.
A substantially circular connecting hole 85 with which the connecting means 82 of 79 is engaged is formed.

The connecting means 82 has substantially the same diameter as the connecting hole 85 of the upper inner lid portion 83 of the inner lid portion 80 which projects downward from the lower surface of the outer lid portion 79 along the axial direction of the outer lid portion 79. It has a flexible joint portion 87 having a cylindrical shape with a diameter, and an engaging portion 88 having a large diameter is formed at the tip of this joint portion 87, and the tip of this engaging portion 88 is arranged along the axial direction. A cut groove 89 is formed, and the engagement portion 88 can be reduced in diameter by the cut groove 89.

Further, two annular seat plates 90, 90 are rotatably fitted and inserted in the joint portion 87 so as to sandwich the upper inner lid portion 83 of the inner lid portion 80, and further the engaging portion 88 side. An O-ring 91, which is located between the seat plate 90 and the upper inner lid portion 83 and maintains airtightness, is fitted and inserted. Then, the engaging portion 88 of the connecting means 82 is engaged with the connecting hole 85 of the upper inner lid portion 83, the outer lid portion 79 and the inner lid portion 80 are rotatably joined to each other, and the lid body 4 is formed. Has been formed.

Further, as shown in FIG. 4, a pipe portion 94 that projects downward in a tubular shape and opens the suction port 93 is formed at approximately the center of the lower inner lid portion 84 of the inner lid portion 80. Further, as shown in FIG. 5, the lower inner lid portion 84 has a duct portion of the winding drum 51.
An air passage hole 95 is formed opposite to the communication hole 74 of 75 and communicates with a connection duct 76 to which the hose 8 is connected. Air passage ribs 96, 96 are formed on the lower surface of the upper inner lid portion 83 and the upper surface of the lower inner lid portion 84 so as to face each other and project in a wall shape, respectively, and the upper inner lid portion 83 and the lower inner lid portion 84 are formed. The inner air passage 97 is formed in the inner lid portion 80 by the air passage ribs 96, 96 by opening the air passage hole 95 communicating with the suction port 93 of the pipe portion 94 and the hose 8 in the inner lid portion 80. ing.

In the lid 4, the outer lid 79 is engaged with the upper opening 3a of the upper body case 3, and the inner lid 80 is airtightly engaged with the dust collecting opening 51a at the upper end of the winding drum 51. Combined, outer lid
79 does not rotate, and the inner lid 80 is rotatably attached to the main body case 5 together with the winding drum 51.

On the other hand, on the inner peripheral surface of the take-up drum 51, as shown in FIG. 4, a ventilation hole 99 is located substantially at the center in the axial direction, protrudes like a wall toward the central axis, and is substantially circular at the center. An annular dust collecting rib 100 having an opening is provided, and the dust collecting chamber 101 is defined by the dust collecting rib 100 and the inner lid portion 80 of the lid 4 engaging with the upper end. And, the dust collecting rib 100 has a ventilation hole.
A filter 102 having air permeability is detachably provided so as to close 99.

A holder 105 for detachably attaching the dust collecting bag 104 is provided near the base end of the pipe portion 94 projecting downward on the lower surface of the inner lid portion 80 of the lid body 4.

Further, below the dust collecting rib 100, an annular blower rib 107 having the same diameter as the dust collecting rib 100 is provided, and the blower rib 107 facing the dust collecting rib 100 has an intake hole at substantially the center thereof. An opening 108 is formed, and an electric blower chamber 109 is defined by the blower rib 107 and the dome portion 56 formed in the lower portion of the winding drum 51.

The dust collecting chamber 101 and the electric blower chamber 109 are communicated with each other through the ventilation hole 99 of the dust collecting rib 100 and the intake hole 108 of the blower rib 107. Further, the pipe portion 94 of the lid body 4 is attached above the dust collection chamber 101 by attaching the lid body 4.
The internal air passage 97 in which the suction port 93 is opened is located, and an air passage is formed along the up-down direction which is the axial direction of the winding drum 51.

An electric blower Mb is provided in the electric blower chamber 109. And this electric blower Mb
A fan (not shown) and an electric motor that drives the fan to rotate.
111 and a fan cover 112 that covers the fan. In addition, the suction port 11 is provided at the center of the fan cover 112.
3, an exhaust port (not shown) is formed in the frame of the electric motor 111.

Further, on the inner peripheral surface of the winding drum 51, an annular support rib 11 protruding inwardly of the electric blower chamber 109 in a wall shape.
5, the electric blower Mb is supported so that the suction port 113 is opposed to the intake hole 108 of the blower rib 107 via a support member 116 made of, for example, rubber attached near the inner peripheral edge of the support rib 115, The suction port 113 of the electric blower Mb is in the dust collection chamber.
101, ventilation hole 99 of dust collecting rib 100 and blower rib 107
The air intake holes 108 are provided so as to communicate with each other in an airtight manner.

An electric equipment body 118 is provided on the upper surface of the lower body case 2, and the electric equipment body 118 includes
A power cord 120 provided with a plug 119 connected to an outlet (not shown) for supplying commercial AC power is connected. The power cord 120 can be pulled out and wound by a winding means (not shown) from a cord opening 121 formed in the lower portion of the lower body case 2.

Further, as shown in FIG. 12, the electric device main body 118 includes a circuit board (not shown) and a movable iron core type transformer.
An electric device such as 123 is housed, and the circuit board has a motor control unit 124 that controls the drive state of the motor Ma and an electric blower control unit 125 that controls the drive state of the electric blower Mb.
Further, a control means 127 including a main control unit 126 to which the motor control unit 124 and the electric blower control unit 125 are connected is mounted.

Then, the electric blower control unit 125 detects a signal from a temperature sensor (not shown) mounted in the vicinity of the electric motor 111 of the electric blower Mb, and this signal indicates that the electric motor 111 has reached a predetermined temperature T ₀ or higher. When the determination is made, as shown in FIG. 15, the temperature detecting means 128 for controlling to reduce the input state of the electric blower Mb is connected. Further, the motor control unit 124 is provided with a current detection unit (not shown) that detects a current value of the motor Ma and an automatic reversal control unit (not shown) that reverses the rotation direction of the motor Ma a predetermined number of times.

Further, the electric blower control unit 125 has a configuration shown in FIG.
As shown in FIG. 12 and FIG. 12, an electric wire 130 for supplying electric power to the electric blower Mb is connected, and a lead wire 131 for supplying electric power to the motor Ma is connected to the motor controller 124. The electric wire 130 is arranged through the inner circumference of the cylindrical body 58 that pivotally supports the winding drum 51 on the main body case 5.
The electric wire 130 is connected to the winding drum 51 by driving the motor Ma.
It is preferable to use a curl cord at least a part of which is formed in a coil shape so that the curl cord does not twist when rotated.

Further, the main controller 126 has a main body operating section 133 provided with a main body side control switch 132 for controlling the driving state of the motor Ma provided on the upper surface of the main body case 5,
In addition, a display unit 134 for displaying the driving state of the motor Ma and the electric blower Mb and the presence / absence of power supply by a light emitting diode or a buzzer is connected.

Further, in the movable iron core type transformer 123 which is an electric device, the hose 8 provided on the front surface of the main body case 5 is used.
A power switch 136 provided on a locking means (not shown) for locking the grip portion 9 is connected. The power switch 136 is opened when the grip 9 is locked by the locking means and is closed when the grip 9 is removed from the locking means. When the power switch 136 is closed, the movable iron core (not shown) of the movable iron core type transformer 123, which is an electric device, moves to close the circuit, and commercial AC power is applied to the main controller 126. It is like this.

On the other hand, in the grip portion 9 of the hose 8, as shown in FIGS. 14 and 15, an input switch 138 for setting the driving state of the electric blower Mb and a hand side control switch 139 for setting the driving state of the motor Ma. Hand operation part where
140, a wireless unit 141 for transmitting and receiving radio waves such as sound waves, radio waves, infrared rays, a power supply unit 142 such as a battery, and
A hand display unit (not shown) is provided for displaying a driving state or abnormality of the electric blower and the motor by a light emitting diode or the like or by a buzzer.

On the inside of the upper part of the upper body case 3,
The main body radio unit that receives and transmits radio waves transmitted from the handheld radio unit 141 arranged in the grip portion 9 of the hose 8.
143 is provided.
It is connected to a main control unit 126 which constitutes a control means 127 for the circuit board housed in 18.

Further, at the tip of the grip portion 9 of the hose 8,
The extension pipe 15 and the suction port body 14 are connected, and the extension pipe 15 and the suction port body are connected.
The dust sucked from 14 is collected in the dust collecting chamber 101 from the internal air passage 97 via the hose 8. Further, air is sucked from the dust collection chamber 101 through the ventilation hole 99 and the suction hole 108 from the suction port 113 of the electric blower Mb, is exhausted from the exhaust port (not shown) of the electric blower Mb to the electric blower chamber 109, and further, From the electric blower room 109 to the ventilation holes of the dome portion 56 and the drum pulley 57.
The air flows from 59 through the lower portion of the main body case 5 to the outside air through an exhaust port (not shown) provided in the main body case 5.

Next, the operation of the above embodiment will be described.

First, when connecting the hose bodies 28, 28, first and second end pipes in which the hose connecting portions 35, 35 are attached to the first and second connecting mechanism portions 34a, 34b in advance, respectively. 31a and 31b are screwed into the bellows groove portion 43 of the hose body 28 by engaging the connection pins 44 with the ends of the hose bodies 28 and 28, respectively. Next, the first coupling mechanism portion 34a is fitted into the second coupling mechanism portion 34b, and the first and second engaging recesses 40a, 40
The b is opposed to form the engagement hole 40.

Then, the mounting port 45 of the second connecting mechanism portion 34b
From the above, the end of the connecting seal member 32 in the longitudinal direction on the side opposite to the operation protrusion 48 is inserted into the engagement hole 40. By this insertion, the entire surface of the coupling seal member 32 does not come into contact with the inside of the engagement hole 40, the airtight projection 47 is crushed and elastically deformed, and the airtight projection 47 comes into airtight contact with the inner surface of the engagement hole 40. . Further, the connecting seal member 32 is inserted, and as shown in FIG. 2, the tip end of the side of the operation projection 48, which is inserted, comes into contact with the operation projection 48 to form a ring shape, and the operation projection 48 of the second mechanism portion 39b. Firstly, the outer peripheral surface is inserted into the mounting opening 45 so as to be flush with the mounting opening 45, and the mounting opening 45 is closed, fitted and superposed.
The end tube 31a and the second end tube 31b are rotatably and airtightly connected to each other to retain and prevent the hose bodies 28, 28 from being connected.

Then, the other end of the hose 8, which is connected and formed by connecting the hose bodies 28, 28 and has the grip portion 9 attached to one end, is attached to the connection duct 76 of the winding drum 51.

Next, at the time of cleaning, the power cord 120 is pulled out and the plug 119 is connected to an outlet not shown. Then, the grip portion 9 of the hose 8 is removed from the locking means (not shown) provided on the front surface of the main body case 5, and the power switch 136 of the locking means is closed to supply power from the commercial AC power supply to the main control section 126. To do.

Further, pull the hose 8, or
A predetermined radio signal is output from the hand radio unit 141 by operating the hand control switch 139 of the hand operation unit 140, and this signal is received by the main unit radio unit 143 of the electric vacuum cleaner body 1, and the main control unit 126 and The motor control unit 124 controls the motor Ma
Is driven in a predetermined direction, that is, the winding drum 51 is rotated at a low speed so as to rotate in a direction in which the hose 8 is discharged, and the hose 8 is pulled out by a predetermined amount. At this time, when the hose 8 is twisted, the joint pipe 32 of the connecting means 30 and the first and second end pipes 31a and 31b are rotated to release the twist. Then, the extension tube 15 and the suction port body 14 are connected to the tip of the grip portion 9 of the hose 8.

Then, the hand operation portion 140 of the grip portion 9 is operated to drive the electric blower Mb in a predetermined input state, and the grip portion 9 is pushed or pulled to move the suction port body 14 to the floor surface F which is the surface to be cleaned.
Run over and clean. By driving this electric blower Mb, dust is sucked together with air from the suction port body 14, and the extension pipe 15, the hose 8, and the connecting duct 76 of the duct portion 75,
The dust flows into the dust collecting bag 104 mounted in the dust collecting chamber 101 via the internal air passage 97 and the pipe portion 94, and the dust is captured in the dust collecting bag 104.

The air filtered by the dust bag 104 is supplied to the filter 102, the ventilation hole 99, the intake hole 108, the suction port 113 of the electric blower Mb, the electric blower Mb, and the electric blower Mb.
Through the exhaust port (not shown), the electric blower chamber 109, the dome portion 56, and the ventilation port 59 of the drum pulley 57, and exhausts to the outside air outside the electric vacuum cleaner body 1 through the exhaust port (not shown) provided in the main body case 5. Discharged as wind.

Even if the hose 8 is twisted during this cleaning, the connecting means 30 is freely rotated between the hose bodies 28, 28 adjacent to each other, so that the twisting is released by the connecting means 30.

Further, when the dust collecting bag 104 is full or when dust or the like is clogged in the hose body 28 or the like, the suction resistance increases and the degree of vacuum on the negative pressure side of the electric blower Mb increases. The vacuum state detection means (not shown) detects this vacuum state, and the hand permission display portion (not shown) provided in the grip portion 9 notifies that by displaying a light emitting diode or a buzzer. In response to this notification, the input switch 138 of the hand operation section 140 is operated to stop the drive of the electric blower Mb, and the handle section 81 is held to remove the lid body 4 from the main body case 5 together with the dust collecting bag 104, and then the dust collecting bag 104. Replace or filter 10
Perform maintenance such as cleaning in step 2 and removing blocked dust.

When the floor surface F far from the electric vacuum cleaner body 1 is cleaned during cleaning, if the hose 8 is to be further pulled out, the hose 8 is pulled or the manual operation section is used.
By operating the hand side control switch 139 of 140, the motor Ma is rotationally driven at a low speed to rotate the winding drum 51 in the discharge direction of the hose 8 and pull out the hose 8 by a predetermined amount. Also,
When the excessively pulled out hose 8 is wound into the vacuum cleaner main body 1 when cleaning the floor surface F at a position far from the distant position, the hand side control switch of the hand operation unit 140 of the grip portion 9 is used.
By operating 139, the motor Ma is rotationally driven at a medium speed to rotate the winding drum 51 in the winding direction of the hose 8 and wind the hose 8 by a predetermined amount.

When dust is clogged in the hose 8 during cleaning, connect the connecting seal member 32 of the connecting means 30 to the operating projection.
Take out 48 from the mounting opening 45 and pull out from the engaging hole 40,
First and second end tubes 31a, 31b rotatably engaged
To disconnect the hose bodies 28 and 28,
Dust clogging the inside of 28 and dust clogging the connecting means 30 is removed. After finishing this dust removal work,
The connection seal member 32 is attached from 45 to the inside of the engagement hole 40, and the first
Also, the second end pipes 31a and 31b are rotatably and airtightly connected to each other, and the hose 8 is connected and formed.

When the cleaning is completed and the hose 8 is wound up, the main body side control switch 132 of the main body operating portion 133 of the electric vacuum cleaner main body 1 is operated, and at the same time as this operation or within a predetermined time, the hand operation portion is operated. Operate the hand side control switch 139 of 140. By these operations, the main control unit 126 and the motor control unit 124 control the motor Ma to be rotationally driven at high speed to rotate the winding drum 51 at high speed to wind the hose 8 at high speed.

For example, when the hose 8 is discharged, the hose 8 is caught in the main body case 5, and the main controller 12
6 and the motor control unit 124, as shown in FIG. 16, the motor Ma is loaded and the predetermined input state P _{0 is set.}
When it is determined that the rotation speed of the motor Ma has been reached, an unillustrated automatic reversal control unit of the motor control unit 124 reverses the rotation of the motor Ma a predetermined number of times in the opposite direction of the winding direction, and the normal input state P ₁ is obtained. At this point, the motor Ma is driven to rotate in the discharge direction of the hose 8. If the normal input state P ₁ is not obtained even after reversing for a predetermined number of times, it is determined that there is an abnormality and the control for discharging is stopped, and the display unit 134 of the electric vacuum cleaner body 1 and a hand display (not shown). The department will notify that fact. In the case of winding, the determination of the input state is reversed and controlled.

When the electric vacuum cleaner body 1 is put away, as shown in FIG. 9, the handle portion 19 is slid upward and pulled up, and the handle portion 19 is held by the cushioning member 16 and the driven wheel 17. The electric vacuum cleaner body 1 placed on the floor surface F is tilted to the rear side which is the driven wheel 17 side, and the driven wheel 17 is pushed or pulled by pushing or pulling the handle portion 19 while the cushioning member 16 is separated from the floor surface F. The electric vacuum cleaner body 1 is moved to a predetermined accommodation place. Thereafter, the electric vacuum cleaner body 1 is again placed on the floor surface F by the cushioning member 16 and the driven wheel 17, and the handle portion 19 is slid downward to be put away.

In the above embodiment, the substantially cylindrical first and second cylinders are used.
End tubes 31a and 31b of the first hose are attached to the mutually connected ends of the flexible hose bodies 28 and 28, respectively.
And the first and second connecting mechanism parts 34a, 34b of the second end pipes 31a, 31b are rotatably fitted to each other with the axial direction as the central axis, and the first and second connecting mechanism parts 34a, 34b are attached. Engaging recesses 40a provided in a groove shape facing each other along the circumferential surface direction.
, 40b are engaged with the connecting seal member 32, respectively, to prevent the first and second connecting mechanism portions 34a, 34b from coming off in an airtight manner,
Since the plurality of hose bodies 28, 28 are rotatably connected to each other and connected to connect the hose 8, the first and second end pipes 31a, 31
The airtightness of the connection portion of b is obtained, and since one of the hose bodies 28, 28 connected to each other is rotatable with respect to the other with the axial direction as the central axis direction, twisting of the hose 8 can be prevented, and the hose 8 can be prevented. You can smoothly wind up and spit
The hose 8 can be easily handled during cleaning. Further, the hose 8 can be prevented from being bent due to twisting, and the hose 8 can be prevented from being damaged.

Further, the second connecting mechanism portion 34b of the second end pipe 31b is opened outward toward the second engaging concave portion 40b so that the connecting seal member 32 can be inserted therethrough. Since the connection seal member 32 can be easily attached / detached via the mounting port 45, the first and second end pipes 31a and 31b can be easily connected / separated, and even if the hose 8 is clogged with dust. Can be easily removed.

Further, the coupling seal member 32 is provided with an airtight protrusion 47 formed in a wall shape along the longitudinal direction on the peripheral surface thereof. The airtight protrusion 47 is defined by the first and second engagement recesses 40a and 40b facing each other. Since the inner surface of the hole portion 40 is elastically deformed and brought into contact with the inner surface of the hole portion 40, airtightness of the connection portion can be obtained, and friction between the engagement hole portion 40 and the connection seal member 32 can be reduced, and the hose bodies 28, 28 can be smoothly connected to each other. The rotation is obtained.

Further, the first and second connecting mechanism portions 34a and 34b of the first and second end pipes 31a and 31b connecting the hose bodies 28 and 28 are made of hard synthetic resin or the like,
Since the hose connecting portions 35, 35 for connecting to the 28 are formed of a soft synthetic resin or the like, the hose bodies 28, 28 can be surely prevented from being deformed by the hard first and second connecting mechanism portions 34a, 34b. The hoses 8 can be connected to each other and can be smoothly rotated while suppressing frictional resistance, and when the hose 8 is wound around the winding drum 51, the soft hose connecting portion 35 is deformed along the curvature of the body portion 52 of the winding drum 51. Since the length of the hard member in the axial direction of the hose 8 is short, the hose 8 can be wound around the winding drum 51 in an orderly manner.

Further, the first and second connecting mechanism portions 34a are arranged so that the connecting means 30 does not protrude from the outer peripheral surface of the hose 8.
, 34b are formed, it is possible to prevent the connecting means 30 from being caught on furniture or the like, or from being caught in the hose mouth 7 or the drum chamber 23, so that the hose 8 can be easily handled and the hose 8 can be smoothly wound and discharged. . Further, the first and second connection mechanism parts 34a formed of hard synthetic resin or the like for connecting the hose bodies 28, 28 smoothly and reliably.
, 34b do not project from the outer peripheral surface of the hose 8, so that it is possible to prevent the hard first and second connection mechanism portions 34a, 34b from coming into contact with the floor surface F or furniture and damaging them.

In the above embodiment, the winding drum 51
The configuration in which the hose 8 is wound up and discharged by freely rotating the motor Ma forward and backward has been described.
The same applies to a configuration in which the winding drum 51 is manually rotated by providing a handle or the like without using the motor Ma, for example, a canister-type configuration in which the hose is detachably connected to the vacuum cleaner body 1 without providing the winding drum. The effect of is obtained.

Although the outer diameter of the connecting means 30 is formed to be approximately the same as the outer diameter of the hose body 28, the outer diameter of the connecting means 30 is adjusted so that the connecting means does not protrude from the outer peripheral surface of the hose body 28. The same effect can be obtained by forming the diameter smaller than the outer diameter of the hose body 28.

[0079]

According to the electric vacuum cleaner of the present invention, the outer diameter of the connecting means for connecting the plurality of hose bodies so as to be rotatably connected to each other about the axial direction of the hose body with respect to the outer diameter of the hose body. Since the hose bodies are formed to have the same size or less, one of the hose bodies connected to each other by the connecting means can rotate with respect to the other with the axial direction as the central axis direction, so that twisting can be prevented and the connecting means can be used during cleaning such as furniture. It can be prevented from being caught in.

[Brief description of drawings]

FIG. 1 is an axial sectional view showing a connecting means of a hose of an embodiment of the electric vacuum cleaner of the present invention.

FIG. 2 is a sectional view of the same in the circumferential direction.

FIG. 3 is a sectional view showing the same connection seal member.

FIG. 4 is a side sectional view showing the same electric vacuum cleaner body.

FIG. 5 is a plan sectional view of the same.

FIG. 6 is a bottom sectional view of the same.

FIG. 7 is a perspective view of the same.

FIG. 8 is a partially cutaway front view showing the same winding drum.

FIG. 9 is an explanatory view showing a movement situation of the same electric vacuum cleaner body.

FIG. 10 is a partially cutaway side view showing the same connection duct.

FIG. 11 is a cross-sectional view showing the connecting means of the above.

FIG. 12 is a block diagram showing a control means of the above.

FIG. 13 is a graph illustrating the relationship between the input state of the electric blower and the temperature of the electric motor.

FIG. 14 is a plan view showing the vicinity of the grip portion of the same hose.

FIG. 15 is a side sectional view of the same.

FIG. 16 is a graph illustrating an input state of the motor of the above.

FIG. 17 is a perspective view showing a conventional vacuum cleaner.

[Explanation of symbols]

 1 Vacuum cleaner body 28 Hose body 30 Connection means 101 Dust collection chamber Mb Electric blower

Claims (1)

[Claims] 1. An electric blower body for collecting dust, and an electric vacuum cleaner body having a dust collection chamber provided on the negative pressure side of the electric blower for collecting dust, and the electric vacuum cleaner body communicating with the dust collection chamber. A plurality of flexible hose bodies provided, and connecting means for rotatably connecting these hose bodies to each other with their axial direction as a central axis and having an outer diameter equal to or smaller than the outer diameter of the hose body; An electric vacuum cleaner comprising: