JPH06169870A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To reduce friction between a power cord and the lower edge of a casing body cord outlet opening where the cord wound around and stored in a drum body is inserted in such a way as free to advance and retreat, and also improve winding performance by journalling a cylindrical member to the lower edge of the opening so as to be freely rotatable. CONSTITUTION:A drum body 47 for taking up a power cord 46 is fitted in a vacuum cleaner body 1, and the power cord 46 is inserted in a plug insertion section 65 formed at a position faced to the upper end of the takeup section 51 of the body 47. A cord outlet opening 66 is formed at the position. Also, a cylindrical member 69 is laid on the lower edge of the opening 66, with both ends so coupled as to be freely rotatable. In this way, the member 69 is journalled to the lower edge of the opening 66 and rotates, upon contact with the power cord 46. Thus, no friction appears between the power cord 46 and the lower edge of the opening 66. According to this construction, the occurrence of friction can be prevented, and the winding load of the cord 46 due to friction can be reduced, thereby improving cord winding performance.

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 having a case body provided with a cord port through which a power cord to be wound and housed on a drum body is inserted.

[0002]

2. Description of the Related Art Conventionally, as an electric vacuum cleaner of this type, for example, a structure shown in FIG. 8 has been known.

The vacuum cleaner shown in FIG. 8 has a case body 81.
A power cord having an electric blower 84 for generating a negative pressure for collecting dust in a dust collecting bag 83 housed in the dust collecting chamber 82, and a power plug 85 for supplying electric power to the electric blower 84 at one end thereof
A drum body 87 that winds up and stores 86 is disposed.

The drum body 87 has a winding means such as a mainspring coil (not shown), and is rotatably supported on the case body 81 by a shaft member fitted to the central shaft. On the other hand, the case body 81 opens rearward in the lower rear part in the traveling direction,
A cord port 88 for inserting the power cord 86 is formed. The cord opening 88 has a diameter smaller than that of the power plug 85 so that the peripheral edge of the cord opening 88 contacts the power plug 85 and the power plug 85 is not inserted.

At the time of cleaning, the power cord 86 is pulled out by holding the power plug 85 locked to the periphery of the cord opening 88 at the lower rear portion of the case body 81, and electric power is supplied to the electric blower 84 for cleaning. I do. Further, at the time of storage, the drum body 87 whose rotation is stopped by the locking means (not shown) is unlocked by a release button (not shown) and the power cord is wound by the winding means.
The 86 is wound around the drum body 87 and stored.

[0006]

However, in the vacuum cleaner of the conventional configuration shown in FIG. 8, the power cord is
When the 86 is rolled up and stored, the power cord 85 is rolled up so that the power plug 85 crawls on the floor surface, so friction occurs between the lower edge of the cord opening 88 and the power cord 86, and the windability is improved. Power cord 86
Also, there is a problem that the cord mouth 88 is worn. Further, when the torque of the winding means is improved to improve the winding performance, the winding speed of the power cord 86 rises, the power plug 85 jumps up, and strongly hits the case body 81, and the power plug 85 and the case. There is also a problem that the body 81 may be damaged.

[0007] In particular, the above-mentioned problem becomes conspicuous in the case where the cord port 88 is formed at a position higher than the floor surface in order to easily pull out the power cord 86.

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 capable of improving the winding performance without increasing the winding speed of the power cord.

[0009]

The electric vacuum cleaner of the present invention comprises:
A case body accommodating an electric blower, a drum body provided in the case body for winding and storing a power cord, a cord opening formed in the case body to allow the power cord to be inserted and retracted, and this cord mouth And a cylindrical member rotatably provided on the lower edge of the.

[0010]

The electric vacuum cleaner of the present invention is rotatable around the lower edge of the cord opening formed in the case body, which is wound up and stored on the drum body and through which the power cord for supplying electric power to the electric blower is inserted so as to move forward and backward. Since the cylindrical member is rotatably supported, the cylindrical member at the lower edge of the cord opening that comes into contact with the power cord is rotated, so that the friction between the power cord and the lower edge of the cord opening is reduced, and wear is prevented. At the same time, the winding load of the power cord is reduced and the winding performance is improved. Also, it is not necessary to increase the winding torque of the drum body more than necessary,
The winding speed of the power cord is reduced to prevent damage.

[0011]

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

1 to 3, reference numeral 1 denotes an electric vacuum cleaner body, which includes a lower case 2a having an open upper surface and an upper case 2b for closing a rear upper surface of the lower case 2a. It is composed of a main body case 2 as a case body having an open front side upper surface portion, and a lid body 3 for opening and closing the front side upper surface portion opening of the main body case 2.

The body case 2 has a swivel wheel 4 attached to the lower surface of the front side in the traveling direction. Further, a handle 5 is provided on the upper portion of the main body case 2 so as to be slidable in the vertical direction, and an accessory 8 provided with a cover portion 7 which is opened at the rear of the handle 5 and which opens and closes the opening openably and closably. An accessory storage section 9 for storing is provided.

Further, 11 is a driven rear wheel, and this driven rear wheel 11
As shown in FIG. 3, a ring-shaped tire portion 12 made of rubber or the like is fitted and fixed to the outer peripheral edge to form a disc shape, and a shaft portion 13 projecting substantially vertically to the center is integrally formed. Has been done. Further, the shaft portion 13 is formed with a cylindrical cylindrical portion 15 provided with an insertion portion 14 on the center axis, and a claw portion 16 protruding in the outer peripheral direction is formed at the tip edge of the cylindrical portion 15. There is.

On the other hand, on both side surfaces of the main body case 2 in the traveling direction of the vacuum cleaner main body 1, a shaft portion 13 of the driven rear wheel 11 is substantially vertically cylindrical toward the side where the shaft portion 13 is rotatably fitted and supported. The wheel-shaped wheel receiving portion 18 is formed to project.

The shaft portion 13 of the driven rear wheel 11 is inserted into the wheel receiving portion 18 of the main body case 2, and the claw portion 16 of the shaft portion 13 is locked to the edge portion of the base end of the wheel receiving portion 18. Are rotatably fitted to each other, and the driven rear wheels 11 are rotatably supported.

On the other hand, as shown in FIG. 2, inside the main body 1 of the electric vacuum cleaner, a dust collecting chamber 21 whose upper side is opened by a partition wall 20 having a grid-like communication port 19 is provided. The dust collection chamber 21 is formed as a compartment on the front side in the traveling direction.
An electric blower room 22 is formed in the rear of the compartment. A dust bag 25 is detachably mounted in the dust collection chamber 21 by a holder 24 pivotally mounted in the dust collection chamber 21.

On the front surface of the partition wall 20, an auxiliary dust collecting filter 26 that covers the communication port 19 is detachably mounted.
The dust collecting bag 25 and the auxiliary dust collecting filter 26 are attached and detached via the upper opening of the dust collecting chamber 21.

On the other hand, in the electric blower chamber 22, an electric blower 28 is arranged as shown in FIGS. 2 and 3. The electric blower 28 is composed of an electric portion 29 (not shown) that rotates and drives a fan, and a fan cover 30 that covers the fan. An intake port 31 is formed in the center of the front surface of the fan cover 30, and an exhaust port (not shown) is formed in the frame of the electric section 29.

A motor head 32, in which a bearing for supporting a shaft (not shown) for rotationally driving the fan is provided, is formed in a cylindrical shape rearward at a substantially center of the rear end surface of the electric section 29.

An annular rubber support 34 is fitted to the outer peripheral edge of the front end of the electric blower 28, and a rubber shock absorber 35 is attached to the motor head 32 of the rear end. 32
It is attached to cover.

On the other hand, on the lower surface of the upper case 2b, an upper rib front portion 36 which projects downward and whose lower end portion is formed in a concave arc shape along the outer peripheral surface of the fan cover 30, and this upper rib front portion An upper rib rear portion 37 that is positioned rearward of the rear portion 36 and protrudes downward in a substantially parallel manner, and has a lower end portion formed in a concave arc shape along the outer peripheral surface of the shock absorber 35 attached to the motor head 32 of the electric portion 29. Each is formed to project.

Further, on the upper surface of the lower case 2a, the upper rib front portion 36 and the upper rib rear portion 37 are opposed to each other and project upward, and the upper end portion is formed in a concave arc shape along the outer peripheral surface of the fan cover 30. A lower rib front portion 38 formed on the lower rib, and a lower rib rear portion 39 whose upper end portion is formed in a concave arc shape along the outer peripheral surface of the shock absorber 35 attached to the motor head 32 of the electric portion 29.
Are formed so as to project.

The shock absorber 35 attached so as to cover the motor head 32 of the electric blower 28 is attached to the rear portion 3 of the upper and lower ribs.
The rear ends of the electric blower 28 are sandwiched and fixed by the rear portions 37 and 39 of the upper and lower ribs via the cushioning member 35.

Further, the outer peripheral surface of the annular rubber support 34 fitted to the front end of the electric blower 28 is clamped and fixed by the upper and lower rib front portions 36 and 38, and the front end of the electric blower 28 is fixed to the rubber support.
It is clamped and fixed by front and rear ribs 36, 38 via 34.

The front end side of the electric blower 28 is provided with a rubber support 34, which communicates with a dust collecting chamber 21 provided with a dust collecting bag 25 for collecting dust sucked by the air inlet 31 of the electric blower 28 together with air. It communicates airtightly through 19.

Further, an exhaust chamber 41 is formed in the electric vacuum cleaner body 1 at the rear of the electric blower chamber 22, and an exhaust chamber 41 is formed on the rear upper part of the upper case 2b of the electric vacuum cleaner body 1. As shown in FIG. 3, the exhaust port 42 communicating with the exhaust port of the electric blower 28 via the exhaust chamber 41 is formed in an arch shape along the upper rear edge of the upper case 2b.

Further, as shown in FIGS. 1 and 3, inside the main body 1 of the electric vacuum cleaner, the electric blower chamber 22 is located on the left side in the traveling direction of the electric blower chamber 22 and projects relative to the upper and lower cases 2a and 2b. A drum chamber 45 is defined by the upper and lower partition walls 43 and 44. Then, in the drum chamber 45, the electric blower 28
A drum body 47 around which a power cord 46 that supplies power to
Is provided.

The drum body 47 is provided with a cylindrical shaft support portion 49, and a disc-shaped wheel portion 50 is formed on the outer peripheral surface of the shaft support portion 49 so as to project in a direction substantially orthogonal to the axial direction. ing. Further, on the outer peripheral edge of the wheel portion 50, there is integrally formed a winding portion 51 having an annular cross-section having a concave cross section around which the power cord 46 is wound, and the drum body 47 has a disc shape. Is formed in.

A winding means 53 having a mainspring coil 52 for winding the power cord 46 drawn out to the winding portion 51 is provided on one surface side of the drum body 47, and the drum body is provided on the other surface side. A bearing portion 54 for mounting the 47 in the drum chamber 45 is provided.

The shaft member 55 is attached to the shaft support 49 of the drum body 47.
Is inserted, one end of this shaft member 55 is pivotally supported by the bearing portion 54, and the shaft member 55 is attached so that the drum body 47 and the bearing portion 54 rotate relative to each other.

On the other hand, the upper partition wall portion 43 formed so as to project downward on the lower surface of the upper case 2b is formed in a wall shape along the traveling direction of the vacuum cleaner body 1, and the lower end portion of the bearing portion 54 is formed. It is formed in a concave arc shape along the outer peripheral surface. Further, the lower partition wall portion 44, which is opposed to the upper partition wall portion 43 on the upper surface of the lower case 2a and protrudes upward, has an upper end portion which is a bearing portion 54.
Is formed in a concave arc shape along the outer peripheral surface of the.

Further, the upper and lower case portions 2a and 2b are formed with upper and lower shaft support wall portions 57 and 58 which project in a wall shape substantially parallel to the upper and lower partition wall portions 43 and 44 and partition the drum chamber 45, respectively. The tip end is formed in a concave arc shape along the outer peripheral surface of one end of a shaft member 55 that engages with the shaft support portion 54 of the drum body 47.

The bearing 54 is sandwiched between the upper and lower partition walls 43, 44, and the other end of the shaft member 55 not pivotally supported by the bearing 54 is driven by the body case 2 after being driven. Ring 11
The shaft body 13 is sandwiched and fixed by the vertical shaft support walls 57 and 58 so as not to come into contact with the inside of the insertion part 14 of the shaft part 13, and the drum body 47 is rotatably supported in the drum chamber 45. Has been done.

The winding portion 51 of the drum body 47 is electrically connected to the other end of a power cord 46 having a power plug 60 at one end.
Moreover, it is mechanically attached, and power can be supplied to the electric blower 28 via the bearing 54.

Further, the winding means 53 is provided above the drum body 47.
Has a locking means 61 for stopping the rotation of the drum body 47 for winding the power cord 46 by means of a release button 62 for releasing the stop and rotating the drum body 47 for winding the power cord 46 by the winding means 53. Means 63 are provided.

When the power cord 46 is pulled out, the locking means 61 idles and the drum body 47 is rotated, and when the pulling out of the power cord 46 is stopped, the rotation of the drum body 47 is stopped by the locking means 61. Further, the drum body 47 is operated by a release button 62 to release the locking means 61, which is stopped by the releasing means 63 by locking the drum body 47, and is rotated by the winding means 53 to turn on the power supply. It is designed to wind up code 46.

On the other hand, on the rear surface of the upper case 2b of the electric vacuum cleaner body 1, at a position facing the upper end of the winding portion 51 of the drum body 47, as shown in FIGS. A concave plug insertion portion 65 is formed so as to expand like a circle. In addition, the plug cord 65 has a power cord 46
A cord opening 66 having a diameter smaller than that of the power plug 60 is formed so that the power plug 60 is inserted through the power plug 60 such that the peripheral edge thereof abuts the power plug 60 and the power plug 60 is not inserted.

Further, as shown in FIGS. 1, 4 and 5, the side wall of the plug insertion portion 65 facing the width direction of the vacuum cleaner body 1 is located at the lower end edge of the cord port 66 and has a through hole. 68 are formed facing each other. A cylindrical member 69 whose both ends are rotatably fitted is attached to the through hole 68.

As shown in FIG. 6, the cylindrical member 69 is made of rubber or the like on the outer peripheral surface of the cylindrical main body 71 in order to prevent friction with the power cord 46 and improve contact. It is also possible to cover the contact portion 72 and form the shaft portions 73 rotatably fitted in the through holes 68 at both ends in the longitudinal direction of the main body portion 71.

Further, as shown in FIG. 7, the cylindrical member 69 shown in FIGS. 1, 4 and 5 has a contact portion 72 of the cylindrical member 69 shown in FIG. It can be formed into a shape.

On the other hand, the lid 3 has a rear end portion pivotally attached to the upper case 2b and covers the dust collection chamber 21 from above so as to be openable and closable. A suction portion 75 is provided substantially in the center of the front side of the lid body 3. The suction portion 75 has an inner opening 76 and an outer opening.
77 and 77 are formed to face each other. Also, the inner opening 76
A cylindrical suction port 78 is formed in the middle opposite to the outer opening 77. A front portion of the suction port 78 is open to the front of the vacuum cleaner body 1, and a rear portion thereof is open to the dust collecting chamber 21.

A shutter 79 is slidably supported on the suction portion 75 so as to openably and closably close a suction port 78 for communicating the dust collection chamber 21 with the outside of the electric vacuum cleaner body 1.

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

During normal cleaning, the lid 3 is closed,
The power cord 46 wound around the drum body 47 is pulled out through the cord port 66, power is supplied from the pulled out power cord 46, and the shutter 79 is slid to open the suction port 78. With the shutter 79 open, a hose body (not shown) is connected for cleaning. The electric blower 28 is driven by the electric power supplied from the power cord 46, and the dust is sucked together with the air from the suction port 78 via the hose body by the drive, and is guided to the dust collection chamber 21 of the electric vacuum cleaner body 1. It is captured in the dust bag 25.

The air filtered by the dust collecting bag 25 is supplied to the auxiliary dust collecting filter 26, the communication port 19, the intake port 31 of the electric blower 28, the inside of the electric blower 28, the exhaust port of the electric blower 28,
The electric vacuum cleaner body 1 is passed through the exhaust chamber 41 in order and from the exhaust port 42.
It is exhausted to the outside air as exhaust air.

When the electric vacuum cleaner body 1 is stored, the release button 62 is operated and the drum unit is released by the release means 63.
Unlock the locking means 61 that is stopped by locking to 47,
The drum body 47 is rotated by the winding means 53, and the power cord 46 is wound and stored in the winding portion 51. Then, the hose body is removed, and the shutter 79 is slid to close the suction port 78. Further, the used accessory 8 is stored in the accessory storage portion 9 on the upper part of the main body case 2.

By the way, since the cord port 66 is located higher than the floor surface, the power cord 46 is in a state of hanging from the cord port 66. When retracting and storing the power cord 46 in this state, the power plug 60 at the tip of the power cord 46
The power cord 46 wound around the drum body 47 pulls the drum body 47 and stores it so as to crawl on the floor surface.

For this reason, the power cord 46 is always connected to the cord port 66.
It contacts a cylindrical member 69 provided at the lower end edge of the cylindrical member 69, and this cylindrical member 69 is rotated by the power cord 46 wound up.

According to the above-described embodiment, the main body case 2 is formed with the cord port 66 which is wound around the drum body 47 and into which the power cord 46 for supplying electric power to the electric blower 28 is inserted. At the lower edge of the
Since the cylindrical member 69 at the lower edge of the cord opening 66 that comes into contact with the power cord 46 rotates by rotating the
There is no friction between the 46 and the lower edge of the cord port 66, wear of the power cord 46 and the lower edge of the cord port 66 can be prevented, and the winding load of the power cord 46 due to friction is reduced. The winding property can be improved.

Further, since it is not necessary to increase the winding torque of the winding means 53 of the drum body 47 due to the reduction of the winding load, the winding means 53 can be downsized and simplified, and the power cord 46 can be wound up. It is possible to prevent the power plug 60 from bouncing up and strongly hitting the main body case 2 or the like due to a decrease in speed, and to prevent damage to the power plug 60, the main body case 2, or the like.

[0052]

According to the electric vacuum cleaner of the present invention, a cylindrical member is rotatably supported at the lower edge of the cord port through which the power cord is inserted so that the cord port comes into contact with the power cord. Since the cylindrical member on the lower edge of the power cord rotates, friction between the power cord and the lower edge of the cord opening can be prevented, wear of the power cord and the lower edge of the cord opening can be prevented, and the winding load of the power cord is reduced. It is possible to improve the winding property by decreasing Further, it is not necessary to increase the winding torque of the drum body more than necessary, the winding speed of the power cord is reduced, and damage to each part can be prevented.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of an electric vacuum cleaner of the present invention.

FIG. 2 is a side sectional view along the traveling direction of the same electric vacuum cleaner body.

FIG. 3 is a front sectional view along the width direction of the same electric vacuum cleaner body.

FIG. 4 is a rear view of a rear portion in the traveling direction of the electric vacuum cleaner body.

FIG. 5 is an exploded perspective view of the vicinity of the cord opening of the same.

FIG. 6 is a perspective view of a cylindrical member showing another embodiment of the above.

FIG. 7 is a perspective view of a cylindrical member showing still another embodiment of the same.

FIG. 8 is a side cross-sectional view of an electric vacuum cleaner body according to an embodiment of the conventional electric vacuum cleaner, taken along the traveling direction.

[Explanation of symbols]

 1 Vacuum cleaner body 2 Body case as a case body 28 Electric blower 46 Power cord 47 Drum body 66 Cord mouth 69 Cylindrical member

Claims (1)

[Claims] 1. A case body accommodating an electric blower, a drum body provided in the case body for winding up and accommodating a power cord, and a cord port formed in the case body to allow the power cord to be retractably inserted. And a cylindrical member rotatably provided on the lower edge of the cord opening.