JPS583691B2 - manual vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a manual vacuum cleaner, and more particularly to an improvement in the holding mechanism of a rotor brush for sweeping floor debris into a dust room.

This type of manual vacuum cleaner has a handle on the top of the vacuum cleaner body, a rotor brush on the bottom that sweeps dirt and dust from the floor, and rollers that move the vacuum cleaner body on the floor. The dirt and dust swept by the vacuum cleaner are swept into a dust room provided inside the vacuum cleaner body.

Conventionally, there are two types of attachment methods for rotor brushes: a fixed type and a movable type.

With fixed types, the amount of penetration of the brush varies depending on the type of floor surface to be cleaned.For example, if the amount of penetration is large, it will become very heavy as you move the vacuum cleaner back and forth, and vice versa. is too light and is inconvenient to operate.

In addition, movable types allow the amount of penetration to be adjusted, but conventional models only require tedious operations to change the height of the rotor brush, which is still insufficient to solve the operational inconvenience. Met.

Also, since the rotor brush sweeps dirt and dust from the floor, it often gets tangled with relatively long and thin threads, wool, pieces of paper, etc. In this case, remove the rotor brush from the vacuum cleaner body. need to be removed.

However, conventionally, the rotor brush was forcibly fitted into a bearing fixed to the vacuum cleaner body, or the tip of the fork was fitted as a bearing, but in both cases, the rotor brush did not have to be removed or assembled. It was just a hassle.

Furthermore, in the past, once the rotor brush was attached to the vacuum cleaner body, the relationship between the rotor brush and the dust room stopper was fixed, so that when sweeping relatively large debris into the dust room, the debris would not flow into the dust room. There is a problem that is difficult to get into.

In consideration of the above points, the present invention provides a manual vacuum cleaner in which the rotor brush can automatically move up and down depending on the type of floor surface, and the rotor brush can be attached and detached from the main body of the vacuum cleaner with great ease. The holder that holds the rotor brush is supported by a pair of guides fixed to the left and right ends of the vacuum cleaner body so that it can slide elastically in the vertical direction, and the lower end of the holder can be moved left and right using its elasticity. This is achieved by making it possible to expand in the direction.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a perspective view of the entire manual vacuum cleaner according to the present invention.

The detailed explanation of the internal mechanism is left to Figure 2 and later.
FIG. 1 shows a handle 10, a grip 20, a body 30, a rubber buffer 40 provided on the outer periphery of the body 30 constituting the cleaning main body, an upper member 50 for fixing the handle fulcrum mechanism, and an upper part of the body 30. A vacuum cleaner is shown having two push buttons 60 protruding from the top.

A pair of rollers 70 are visible from the bottom of the body 30, and a corner brush 80 is provided at each corner.

Referring to FIG. 2, each component constituting the main part of the manual vacuum cleaner is shown exploded.

The explanation will be made sequentially from the top to the bottom. The upper member 50 shown in FIG. 1 is located on the top of the body 30 having the rubber buffer 40 on the outer periphery.

The body 30 provides a first aperture 31 for fixing the handle fulcrum mechanism 51, a second aperture 32 for protruding the push button 60, and engagement with a chassis 90, which will be described in detail later. It has four third openings 33.

The handle fulcrum mechanism 51 includes a shaft-supported base 51a for inserting the handle, and a short shaft 51 that provides a fulcrum for the base 51a.
b, and a plate-shaped U member 51c that supports this short shaft 51b.

When the handle fulcrum mechanism 51 is positioned in the first opening 31, a plate-shaped lower metal fitting 52 is applied from below and held between the handle fulcrum mechanism 51 and the upper member 50.

The upper member 50 includes an engaging portion 50a that engages with the body 30;
It has a screw hole 50b and a short shaft fitting part 50c, and by screwing the screw 52b into the screw hole 50b from below through the screw hole 52a of the lower metal fitting 52, the handle fulcrum mechanism 5
Fix 1.

At the bottom of FIG. 2, a chassis 90, which together with the body 30 forms the main body of the vacuum cleaner, is shown.

The chassis 90 is made up of left and right side walls 91 and a dust room component 92 formed by extending the left and right side walls 91 upward from the left and right ends. A fitting support portion is provided.

That is, the first fitting support portion 93 is connected to the insertion portion 95 of the guide 94.
The second fitting support part 97 receives the wheel 70 via the U member 98, and the third fitting support part 100 receives the coach brush 80.

A support shaft 1 of a comb 101 is mounted on the inner wall of the horizontal wall 91.
02 and a slit portion 104 that supports one end of the lower metal fitting 52 described above.
05, and four protrusions 106 are provided at both ends of each side wall 91 to engage with the third openings 33 of the body 30 and provide integration of the body 30 and the chassis 90. A dust room component 92 is provided with
consists of a fixed part 92a and a movable part 92b, and slits 92,c are provided at the boundaries thereof to provide a hinge effect.

A pair of horizontal walls 91 constitute a chassis 90 by being connected by a dust room component 92, and the horizontal walls 91
They are integrated by the engagement relationship between the engagement recess 91a formed on the fixing part 92a and the engagement protrusion 92a' provided on the fixing part 92a.

Here, the holder 96 supported by the first fitting support part 93 is made of synthetic resin and has an insertion part 95 consisting of two insert pieces that are inserted into the fitting support part 93 from the left and right directions. is held in the guide groove of the guide 94.

The guide 94 is a cylindrical body extending in the vertical direction, and the upper end of the holder 96 is slidably inserted from below using the inside as a guide groove.

A linear spring 96b is attached to the guide 94, one end of which is fixed to the guide 94, and the other end is inserted through a window opened in the guide 94 and fixed to the holder 96, so that the holder 94 is attached to the linear spring 96b. is pushed downward and biased by

The holder 96 is made of an elastic plate, and the rotor brush 1 is attached to the lower end.
A bearing hole 96a is provided to receive the shaft tip 108 of the rotor brush 107, and by pushing and expanding the holders 96 provided at the left and right ends in the left and right direction, the rotor brush 107 is inserted into the bearing hole 96a.
It is designed to be removable.

In the case of this embodiment, the tip of the holder 96 is bent outward so that such attachment and detachment operations can be easily performed.

FIG. 3 shows a side section of the manual vacuum cleaner in the assembled state.

A handle insertion base 51a is pivotally supported by a short shaft 51b, and a leaf spring 5 is installed between the tip thereof and a plate-shaped U member 51c.
1a is positioned so that the angle of the handle can be set arbitrarily.

An upper member 50 and a lower metal fitting 5 are disposed above and below the plate-shaped U member 51c.
2 is provided, thereby fixing the handle fulcrum mechanism 51 shown in FIG. 2 to the body 30.

A rubber buffer 40 is provided around the outer periphery of the body 30, and a chassis 90 having the various parts shown in FIG. 2 is fixed to the body 30.

In FIG. 3, a push button 60 is shown and the pivot point 6
1 is supported via a lever 62, and a stopper 63 is provided below the lever 62.

A spring 94 is provided above the dust room component 92, and its spring force forces the movable portion 92b to close.

Corner brushes 80 are located at both lower ends of the body 30, and a rotor brush 107 having bristles wound around a central axis is provided at the center, and a comb 101 is located above the rotor brush 107. .

FIG. 4 shows the bottom of the manual vacuum cleaner.

A rubber buffer 40 is placed on the outer periphery, wheels 70 are placed on both sides of the rotor brush 107, and corner brushes 8 are placed at the four corners.
0 is set.

The rotor brush 107 has a roll 109 and a holder 9
6, with fixed parts 92a and movable parts 92a on both sides.
2b and a slit 92c having a hinge effect.

The chassis 90 is mounted so that the tip of the chassis 90 can be slightly observed from between the wheel 70 and the roll 109.
a holder 96 between the side wall 91 of the body 30 and the inner wall of the body 30;
The wheel 70aU member 98 and corner brush 80 are restricted from falling off from the fitting support parts 93, 97, and 100.

In the above configuration, when the manual vacuum cleaner is operated, the wheel 70 rotationally supported by the U member 98 rotates due to sliding on the floor surface.

Since the rotation axis of the wheel 70 is not fixed in an immovable state, there is a slight delay as the vacuum cleaner moves, and the wheel 70 located in front of the rotor brush 107
9.

That engagement causes roll 109 to rotate, thereby causing rotor brush 107 to rotate.

The rotation of the rotor brush 107 picks up dirt or dust on the floor and carries it to the dust room constituted by the dust room constituent member 92.

As shown in FIG. 3, the comb 101 is located above the rotor brush 107, and its rotation causes the comb 101 to
The comb 10 is tilted and is located at the rear with respect to the direction of travel.
Since the tip of the rotor brush 107 tends to bite into the rotor brush 107, dirt or dust therein is efficiently taken out and guided rearward to the dust room.

After finishing the cleaning work, push the push button 60 downward to release the lever 6.
2 opens the movable part 92b of the dust room component 92 against the spring force of the spring 64 (position shown by dotted line)
.

The movement of the movable portion 92b at that time is easily realized by the hinge effect of the slit 92c.

When the movable part 92b is pushed away from the back, the dust room 92 is closed again and normal cleaning work is possible.

According to the embodiments described above, the body 30 and the chassis 90
There are no caulking or welding parts in the structure, and a manual vacuum cleaner can be provided by simply attaching each part to the chassis by fitting and then assembling the two parts, which can significantly reduce manufacturing man-hours. Therefore, the cost can be significantly reduced.

Furthermore, regardless of the type of carpet being cleaned, whether it is deep or shallow, the holder 96 automatically slides up and down due to the buckling of the rotor brush 107 and the balance between the linear springs 96b. As a result, the bristles of the rotor brush 107 can smoothly sweep the floor surface, and even deep carpets can be easily operated.

As described above, the rotor brush 107 has a wound brush configuration, and because of its thick diameter, it is soft to the touch and can obtain a predetermined circumferential speed with a lower number of revolutions.

Since the guide 94 is made of an elastic material, it is possible to move back and forth, and therefore good driving characteristics can be expected.

Furthermore, since a gap is formed between the guide 94 and the holder 96, the rotor brush 107 always moves in the opposite direction to the operating direction, and as a result, the rotor brush 107 always moves in the opposite direction to the operating direction.
A large gap is formed between the dust room 92 and the front dust room 92, making it possible to pick up even large pieces of dust.

As mentioned above, since the guide 94 is made of a material with bending elasticity, the holder 96 can be moved left and right, and the rotor brush 107 can be easily attached and detached by simply placing a finger on it and moving it left and right. .

This makes it possible to replace the rotor brush 107 and also to wipe away attached threads and the like.

Further, since the bearing hole 96a of the holder 96 is formed slightly larger and the tip of the shaft 108 has a curved surface, there is no need to pry the hole 96a during attachment and detachment operations.

Furthermore, since the support shaft 51b of the handle fulcrum mechanism 51 has been shortened, the entire body 30 does not have to be semi-cylindrical, but only the center can be semi-cylindrical and the height or shape of the other parts can be freely selected. can do.

Since the structure of the chassis 90 is such that the fixed part 92a of the dust room component 92 and both side walls 91 are firmly connected and integrated, it is not necessary to pay attention to the clearance required for opening and closing the dust room. Since the movable portion 92b moves by the hinge action of the slit 92c, a rotating shaft is also unnecessary.

The two dust rooms can be opened and closed independently by the two push buttons 60, and can be stopped at the fully open position, making the task of emptying the trash much easier.

Further, since the engagement between the wheel 70 and the rotor 109 occurs only between the wheel 70 and the front wheel 70 due to the retreat of the front wheel 70 during operation, the wear can be reduced to about half that of the conventional one.

As described above, according to the present invention, it is possible to obtain a manual vacuum cleaner that sweeps dirt and dust from the floor into the dust room with the rotor brush by driving the vacuum cleaner body back and forth. The rotor brush is held by a holder that is vertically slidable and horizontally elastic, allowing the rotor brush to move up and down depending on the type of floor surface and always clean with the appropriate operating force. The machine can be handled easily, and even if a long piece of dirt gets caught in the rotor brush, the holder can be pushed open to remove the rotor brush and remove the dirt easily.

In addition, if the holder is held on the guide so that it can move back and forth as in the above embodiment, the rotor brush will move in the opposite direction to the direction in which the vacuum cleaner body moves, and the space between it and the dust room will be appropriately opened. In this way, even comparatively large debris can be easily swept into the dust room.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is an exploded view showing one embodiment of the present invention. FIG. 3 is a side sectional view showing one embodiment of the present invention. FIG. 4 is a bottom view showing one embodiment of the present invention. Explanation of symbols, 10...Handle, 20...
...Grip, 30...Body, 31...
...First opening part, 32...Second opening part, 33.
...Third opening, 40...Rubber buffer,
50... Upper member, 50a... Engaging part, 50b... Screw hole, 50c... Short shaft fitting part, 51...・Handle fulcrum mechanism, 51a
...Handle insertion base, 51b...Support shaft, 51c...U member, 51d...
Leaf spring, 52...Lower metal fitting, 52a...
・Screw hole, 52b...Screw, 60...
Push button, 61... Pivot point, 62... Lever, 63... Stopper, 64... Spring, 70... Wheel, 80... ...Corner brush, 90...Chassis, 91...
・Side wall, 91a...Engagement recess, 92...
・Dust room component, 92a... fixed part,
92b...Movable part, 92c...Slit, 93...First fitting support part, 94...
・Guide, 95...Guide insertion part, 96...
...Holder, 96a...Bearing hole, 96b.
... Linear spring, 97 ... Second fitting support section, 98 ... U member, 100 ... Third fitting support section, 101 ... ...Comb, 102...
...Cam support shaft, 103... Concave portion, 104.
... Slit portion, 105 ... Supporting member, 106 ... Protrusion, 107 ... Rotor brush, 108 ... Shaft tip.

Claims (1)

[Scope of Claims] 1. A pair of guides fixed to both left and right ends of a vacuum cleaner body, extending vertically while facing each other, and having an upper end slidably held in the vertical direction by the guides, and a pair of elastic plate-like holders having a bearing hole at the lower end for receiving the rotor brush shaft; and a spring inserted between the guide and the holder to elastically push and bias the holder downward from the guide. By pushing and expanding the lower ends of the pair of holders in the left-right direction using their left-right elasticity, the shaft of the rotor brush can be attached to and removed from the bearing hole, and the vacuum cleaner body is pressed against the floor. A manual vacuum cleaner, wherein the holder slides upward against the spring. 2. The guide has a vertical guide groove for receiving the holder, and the guide groove has a front-to-back width wider than the front-to-back width of the upper end of the holder, and drives the vacuum cleaner body in the front-to-back direction to drive the rotor brush. Claim 1, wherein when the vacuum cleaner is rotated, the rotor brush can be moved in a direction opposite to the sliding direction of the vacuum cleaner main body by causing the holder to shift back and forth within the guide. manual vacuum cleaner.