JPH0669431B2 - Vacuum cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a dust collecting portion of an electric vacuum cleaner, and improves the airtight state of the dust collecting portion and improves the dust collecting amount of a dust collecting filter. The dust collecting unit configuration.

[Conventional technology]

In the dust collecting portion of the vacuum cleaner, a large number of ribs are arranged on the side surface of the dust collecting portion in order to prevent the dust collecting filter from adsorbing to the side surface of the dust collecting portion. As shown in FIGS. 4 and 5, the conventional rib body is provided with a rib body orthogonal to the side surface of the dust collecting portion to prevent the dust collecting filter from adsorbing to the side surface of the dust collecting portion. It was

[Problems to be solved by the invention]

However, in the conventional rib body, the range in which the dust collecting filter can be prevented from adsorbing to the side surface of the dust collecting portion is the space shown in the figure, and the effect of preventing adsorption cannot be sufficiently exerted.

Further, since the conventional rib body supports the dust collecting filter with the line, there is a possibility that the dust collecting filter may be damaged by the spreading force of the intake air.

Therefore, an object of the present invention is to provide an electric vacuum cleaner that solves the above problems, enhances the effect of preventing the dust collecting filter from adsorbing to the side surface of the dust collecting portion, and prevents damage to the dust collecting filter.

[Means for solving problems]

In order to solve the above-mentioned problems, the feature of the present invention is that an electric blower chamber containing an electric blower and a dust part space located above the electric blower chamber and containing a dust filter for collecting dust are provided. In the electric vacuum cleaner configured to hang the dust filter from above to below, a rib body extending in a direction orthogonal to a hanging direction of the dust filter is provided on an inner side wall of the dust portion space. And the rib body has a plane portion orthogonal to the upper portion.

[Action]

According to the present invention, since the rib body having the flat surface portion orthogonal to the side surface of the dust collecting portion is provided, it is possible to enhance the effect of preventing the dust collecting filter from adsorbing to the side surface of the dust collecting portion and increase the amount of dust collection. Can be planned.

Further, according to the present invention, since the dust collecting filter is supported by the surface, it is possible to prevent the dust collecting filter from being damaged.

Example of Invention

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

In FIG. 6, the suction body 1 is provided so as to face a part of the rotary brush 23 in the opening 3 of the bottom plate 2, and the rotary brush 23, via the belt 5, is an electric blower related to a dust suction operation drive unit. Power is transmitted from 6 to rotate.

The main body case 7 extends the operation handle 8 upward, has a dust collecting space 44 in the center, and is attached to the suction body 1 so as to be tiltable as shown by the solid line and the chain line in FIG. When not in use, it is constructed so that it can be leaned upright (shown by the solid line) on the mouthpiece 1 so as to stand upright.

In FIG. 7, W ₂ indicates the distance between the bottom plate 2 and the floor surface when standing upright, and W ₁ indicates the distance when in use.

The mouthpiece 1 is externally provided with a switch knob 10, a bumper 11 for preventing damage to furniture, a pedal 12 used when the body case 7 is locked on the body 1, and a base for pivotally supporting the body case 7. A ram 13 is provided.

This switching knob 10 is a knob for adjusting the distance between the bottom plate 2 of the suction body 1 and the surface to be cleaned. The height setting cam 14 is integrally connected as shown in FIGS. A knob position spring portion 15 is provided so as to have an elastic force by providing a notch in a part of the side surface of the cylinder so as to be fixed at the rotating position. As shown in FIG. 9, the height setting cam 14 is provided with planes X, Y, Z which are equally divided in a substantially cylindrical direction and have steps in the knob axis direction, each plane selectively contacting the front wheel axle 16. Contact.

The front wheel axle 16 has a crankshaft shape as shown in FIG. 9, and both ends 17 thereof are rotatably supported by the suction body 1. Front end wheels 18 for height adjustment are attached to the both ends 17. Further, as shown in FIG. 8, one end of which is pivotally attached to the mouthpiece 1 and the other end of which is engaged with the main body case 7 so as to project to the outside.
Is configured so as to contact a part of the both end portions 17 at the intermediate portion of the lever.

At the front end of the mouthpiece 1, a drive pulley 20 is provided, and a brush brush 21 in which hair is spirally planted on the outer periphery and a protrusion 22 which is also divided into three in the longitudinal direction and is also arranged in a spiral shape are arranged. There is a rotating brush 23. The protrusions 22 are arranged at a total of 6 positions on the front and back of the rotary brush 23, and the brush brush 21 has a surface on which the protrusions 22 are not arranged so that the spiral angle θ between the brushes is substantially constant as shown in FIG. It is configured as follows. The rotary brush 23 needs to have a relatively large wall thickness for the purpose of implanting bristles. For this reason, the rotary brush 23 is formed by plastic injection molding containing a foaming agent. Also, the rotating brush 23
Is hollowed through the fixed shaft 24 and is rotatably supported by bearings 25. Bearing covers 26 are arranged at both ends of the fixed shaft 24, and a vibration-proof cap 27 made of an elastic material is used. It is detachably attached to the mouthpiece 1. Anti-vibration cap 27
Is configured to perform vibration isolation of the rotating brush 23 to the suction body 1 and to have a lip portion 28 on the inner circumference to prevent dust from entering the bearing 25. Further, a thrust spring 29 is provided between the bearing 25 and the bearing contact surface of the rotating brush 23 in order to adjust the play of the rotating brush 23 in the axial direction.

At the rear end portion of the suction body 1, a rotary shaft 30 integrally provided on the body case 7 is rotatably supported by a semi-circular bearing rib 31 provided on the suction body 1. Semi-circular bearing
There is a base frame 13 with 32. Here, the semi-circular bearing rib 31 has a rib shape because it is provided integrally with the suction body 1. However, if the semi-circular bearing rib 31 is a separate part from the suction body 1, it does not have to be a rib shape. It is possible. As shown in FIG. 11, the base frame 13 has a substantially U-shape when viewed from the bottom, a rear wheel 33 is provided near the bearing 32, and a rear wheel 33 is provided near one bearing 32. In order to lock the main body case 7 at the positions shown by the solid line and the chain line in the figure, a lock arm 35 that comes into contact with the locking portion 34 provided on the main body case 7 is provided. The lock arm 35 has a cylindrical portion 36, and a spiral urging spring 37 for urging the cylindrical portion 36 in the direction of the locking portion 34 with the cylindrical portion 36 as a rotation axis.
Further, the lock arm 35 is integrally provided with a flat surface portion 38 that comes into contact with the lower end of the bedal 12 when the bedal 12 is stepped on.
The locking between the locking portion 35 and the locking portion 34 is configured to be released. Here, the bedal 12 is attached with the support shaft 39 provided in the suction body 1 as the center of rotation, and when there is no depression, the flat portion 38 is urged by the urging force of the urging spring 37.
It is positioned by abutting the lower end. Further, the base frame 13 is provided with a belt cover 40 on the side where the belt 5 is suspended for safety.

The dust passage in the suction body 1 described above communicates with the main body duct 42 by the suction duct 41 and is connected to the main body case 7.

The main body case 7 is roughly divided into three spaces, and includes an electric blower chamber 43, a dust collecting part space 44, and a cord reel chamber 45.

In the electric blower chamber 43, an intake duct 48 having an electric blower 6, an exhaust port 46, a suction port 47 connected to the dust collection space 44, and an inlet 50 of an exhaust duct 49 communicating with the cord reel chamber 45.
Further, a step portion 51 that engages with the axle pushing lever 19 extending from the side of the suction body 1 is provided outside. Further, a reflection plate 54 having a lamp 52 for illumination and a lamp holder 53 for the illumination is attached to the intake duct 48, and the light is emitted to the outside from a lamp window 55 provided on the wall surface of the electric blower chamber 43.

Further, in the dust collection space 43, the main body duct 42 is arranged along the back surface, the opening 56 of the main body duct 42 is divided into two forks, and one opening 56a is provided with an airtight packing 57. The filter base 58 is attached to the body case 7 by a box-shaped component. The other opening 56b is normally closed by an openable / closable flow path cover 80 having an arcuate packing 79. The opening 56 is tapered 81 so that it can be fitted with the fitting of the attached hose (not shown).
When the attached hose is used, the flow passage cover 80 is opened to fit the joint portion to the taper portion 81, and the flow passage from the mouthpiece 1 is closed on the side surface of the joint portion. Is configured. The filter 59 that collects dust is
It is made of a material such as paper or cloth, and the mouthpiece portion 60 is engaged with the holder 61 and is detachably attached to the filter base 58. The airtightness of the dust collecting portion space 43 to the outside is taken between the dust collecting portion packing 62 provided around the dust collecting portion space 43 and the airtight rib 64 provided on the front lid 63, and when the electric blower 6 is in operation, The dust space 9 is configured to have a negative pressure. The front lid 63 is provided with a dust meter 65 that has a function of flowing a bypass flow from the outside in order to notify when the dust in the filter 59 is discarded and to prevent the temperature rise due to insufficient cooling of the electric blower 6 when the air volume decreases. Has been set up,
A clamp 66 is provided at the upper end to detachably engage with the main body case 7.

Further, the front lid 63 has a rib body 82 having a substantially T shape on both inner side walls.
Is provided. This T-shaped rib body 82 has a height at which it travels from the side edge of the front lid 63 and has an inclined portion 83 at the tip,
When the front cover 63 is attached to the body case 7, the body case 7
Since the inner side end 84 of this and the base of this inclined portion 83 are fitted together, even if the main body case 7 and the front lid 63 are deformed or warped, this is corrected and the airtight surface is kept constant.

Further, in the cord reel chamber 45, a cord reel 68 around which the power cord 67 is wound, a power switch 69, and a cord reel button.
70 and an outlet 71 of the exhaust duct 49 are provided, and the power transmission line 72 from the cord reel 68 to the electric blower 6 is an exhaust duct.
It is connected through 49. Here, the exhaust duct 49 is
The main body case 7 and the duct lid 73 are closed to form a duct. The cord reel chamber 45 is composed of a main body case 7 and a reel lid 74, and a cord reel 68 is attached to the reel lid 74. If the power cord 67 is broken and needs to be replaced, the cord reel chamber 45 comes into contact. Piece 75 and body case 7
It is structured such that it can be separated from the ring-shaped contact 77 provided on the reel supporting base 76 disposed on the side.
It can be replaced without touching the power transmission line 72 connected to. A handle cap 78 made of a soft material is provided at the tip of the handle 8 attached to the upper end of the cord reel chamber 45 in order to absorb an impact when the vehicle is unexpectedly fallen backward.

Next, use of the upright type vacuum cleaner according to the present embodiment configured as described above will be described.

At the time of use, the power cord 67 is pulled out from the cord reel 68, connected to the power source, and the pedal 12 at the rear of the suction body 1 is stepped on to tilt the main body case 7 from above the suction body 1.

Next, when the power switch 69 is turned on, the electric blower 6 is operated, and the rotary brush 4 is rotated via the belt 5 along with suction by the blower.

At this time, when the position of the switching knob 10 is set so that the X position of the height setting cam 14 abuts on the front wheel axle 16, the protrusion amount of the front wheel 18 for height adjustment from the bottom plate 2 is It becomes the minimum (the position shown by the solid line in Fig. 8), and is most suitable for cleaning when the length of the carpet is short.

When the length of the carpet is long or medium, the switching knob 10 is turned to the Z or Y position of the height setting cam 14 to adjust the height of the front wheel 18 for height adjustment. Bottom plate 2
Since the amount of protrusion from the rug changes, cleaning can be performed according to the difference in the rug's hair.

Here, a case where the switching knob 10 is turned will be described. That is, when the main body case 7 is leaned against the suction body 1, the rotation of the main body case 7 pushes down one end of the wheel pushing lever 19 protruding from the suction body 1 by the step portion 51 provided in a part of the main body case 7. By this use, the positions of both ends 17 of the front wheel axle 16 for height adjustment are adjusted to the maximum value of the protrusion amount of the front wheel axle 18 for height adjustment or to a position where the protrusion amount is slightly larger than that. Push down. Then, the height setting cam 14 and the both end portions 17 are separated from each other, and no force is applied to rotate the switching knob 10, so that it can be easily rotated to a desired position.

After that, when the main body case 7 is tilted again, the step portion 51 also rotates in the same manner, freeing the axle pushing lever 19,
The height setting cam 14 and both ends 17 of the front wheel axle 16 are brought into contact with each other.

When the cleaning is performed by the above-described method, the air flow containing a large amount of dust passes through the suction duct 41 and the main body duct 42 from the opening 3 of the bottom plate 2 of the suction body 1 and flows into the filter 59. This filter 59 separates and filters into a clean air flow and dust, and only clean air flows from the suction port 47 to the intake duct 4
8 and then passes through the electric blower 6, part of which is the exhaust port 4
At the same time, it is discharged to the outside of the machine from 6, and a part of it also flows into the exhaust duct 49 from the inlet 50 and is introduced into the cord reel chamber 45. This exhaust is the contact piece 7 of the power cord 67 and the cord reel 68.
5 and the contact 77 of the reel support base 76 are cooled and then discharged to the outside of the machine. At this time, the exhaust duct 49 has a relatively long distance to provide a sound deadening effect, and the exhaust air is released from the narrow exhaust duct 49 to the cord reel chamber 45 forming a large space, which is also effective for deadening the sound.

According to the present embodiment, the rib body 82 for preventing the suction of the filter 59 is formed in the front lid 63 in a substantially T-shape, so that the suction preventing effect of the filter 59 can be enhanced. That is, as shown in FIGS. 4 and 5, the conventional rib body 8 for preventing adsorption is used.
In 2 '(Fig. 5 has a boss 90 at the end of the rib body),
The filter 59 may be adsorbed on the side surface of the rib body 82 ', and even if it is not adsorbed, the range in which the adsorption of the filter can be prevented is the space shown in the figure, but in the present embodiment,
As shown in FIG. 3, since the rib body 82 is formed in a substantially T-shape, a space portion 85 is formed, so that the adsorption preventing effect of the filter 59 can be enhanced as compared with the conventional case. As a result, the effective area through which the air flow of the filter 59 passes increases, and there is a great effect that a larger dust collection amount can be secured even with the same dust collection volume. Furthermore, in the conventional example, since the tip portion 86 of the rib body 82 'comes into contact with the filter 59, unless the plate thickness is made relatively thick and the shape of the tip portion 86 is rounded, the force that the filter 59 spreads by intake air. In this case, a rib body 82 'causes a sink mark on the outer surface of the front lid 63, which is a problem in appearance. The flat portion 87 of the body 82 receives the tip portion 88.
In comparison with the conventional example, since a smaller force is applied,
Even if the rib body 82 is made thin, the filter 59 is not damaged, and there is an effect that sink marks or the like are less likely to appear on the front lid.
Further, in this embodiment, since the flat portion 87 of the rib body 82 is provided in the vicinity of the bent portion 89 of the front lid 63, even if the flat portion 87 of the rib body 82 is slightly thickened, the outer portion of the front lid 63 is not affected. The sink marks on the surface can be made inconspicuous.

Further, the rib body 82 is required to have strength because it is made to travel from the side end of the front lid 63 for the purpose of correcting the alignment with the main body case 7. However, by making the rib body 82 substantially T-shaped, 82 This has the effect of significantly improving the strength of itself.

〔The invention's effect〕

As described above, according to the present invention, since the rib body having the flat surface portion orthogonal to the dust collecting portion side surface is provided, it is possible to enhance the effect of preventing the dust collecting filter from adsorbing to the dust collecting portion side surface. The amount of dust can be increased.

Further, according to the present invention, since the dust collecting filter is supported by the surface, it is possible to prevent the dust collecting filter from being damaged.

[Brief description of drawings]

FIG. 1 is a front view of the embodiment of the present invention seen from the inside of a front lid 63, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG.
FIG. 6 is a schematic diagram showing the present embodiment of the rib body 82, FIGS. 4 and 5 are schematic diagrams showing conventional examples of the rib body 82 ', and FIG. 6 is an upright electric vacuum cleaner showing an embodiment of the present invention. FIG. 7 is a longitudinal sectional view, FIG. 7 is an explanatory view of the relationship between the inclination of the main body case 7 and the bottom surface of the suction port and the surface to be cleaned, FIG. 8 is an enlarged sectional view of an essential part thereof, and FIG. Fig. 10 is a perspective view showing the shape and operation state of the axle push-out lever together, Fig. 10 is a longitudinal sectional view showing a part of the rotary brush 23, Fig. 11 is a bottom view seen from the bottom, and Fig. 12 is a bottom view.
FIG. 13 is a vertical sectional view showing the exhaust duct portion, and FIG. 13 is a perspective view of the upright electric vacuum cleaner of this embodiment. 7 ... Main body case, 44 ... Dust collection space, 59 ... Filter, 63 ... Front lid, 82 ... Rib body (substantially T-shaped), 83 ... Inclined portion, 84 ... Case inner side edge, 87 …… flat part, 88 …… tip part.

Claims (1)

[Claims] 1. An electric blower chamber containing an electric blower, and a dust part space located above the electric blower chamber and containing a dust filter for collecting dust. The dust filter faces downward from above. In an electric vacuum cleaner configured to be hung from the inside, a rib body extending in a direction orthogonal to a hanging direction of the dust filter is provided on an inner side wall of the dust part space, and the rib body is a plane orthogonal to an upper part. An electric vacuum cleaner having a part.