JPH1189757A - Electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner with improved stability of the main body, when used in an upright position. SOLUTION: An electric vacuum cleaner is provided with an inlet 5, a column pipe 2 connecting to the inlet 5, and a vacuum cleaner main body 1 attached to the column pipe 2. A pair of bearing section 14a, 14b for assembling a pair of wheels 12a, 12b is provided penetrating to a rear direction of the vacuum cleaner main body 1 at a rear section of the vacuum cleaner main body. The inlet 5 is put between inside surfaces of the pair of the bearing sections 14a, 14b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, as a vacuum cleaner capable of being deformed according to a place to be cleaned, a cleaner body is detachably fixed to a support pipe so that a state of use as an upright and a cleaner body are supported. There is a dual-purpose vacuum cleaner that can be used with the pipe removed from the pipe.

[0003] A conventional dual-purpose vacuum cleaner is used in a state where the cleaner body is detached from the support pipe by connecting the cleaner body, a hose, a support pipe, and a suction port in this order. The vacuum cleaner main body can be used by moving the floor surface by hand or using wheels.

[0004] Further, since the cleaner main body is detachably fixed to the support pipe, it can be transformed into a use state as an upright. In a conventional vacuum cleaner, for example, concave portions are formed at two places in front and rear of a lower surface of a vacuum cleaner main body as fixed portions, and a support pipe is provided with a convex portion that engages with each of the concave portions.

[0005]

However, in the conventional vacuum cleaner, the main body of the vacuum cleaner is not fixed to the suction port when it is used as an upright. And the stability is poor.

Also, when the cleaner main body is fixed to the support pipe so as to be deformed into a use state as an upright, there is no means for guiding the cleaner main body to a predetermined position. However, there is a problem that it is difficult to align the projections provided on the base with fixed portions such as recesses.

The present invention has been made to solve such a problem, and an object of the present invention is to provide an electric vacuum cleaner in which the stability of the main body of the vacuum cleaner in a state of use as an upright is improved.

It is another object of the present invention to provide an electric vacuum cleaner which can easily align the fixed portions of the main body of the vacuum cleaner and the support pipe when deformed into a state of use as an upright. .

[0009]

The vacuum cleaner of the present invention comprises:
A vacuum cleaner comprising a suction port, a support pipe connected to the suction port, and a cleaner body detachably attached to the support pipe, wherein a rear portion of the cleaner body includes a pair of wheels. A pair of bearings for attaching the projections are provided to project rearward of the cleaner body, and the suction port can be sandwiched by inner portions of the pair of bearings.

It is preferable that a portion of the suction port sandwiched between the pair of bearing portions is formed so as to have a width smaller than a head of the suction port.

[0011] It is preferable that at least a part of the rear surface of the head of the suction port is formed with a slope which is inclined in such a manner as to descend toward the rear of the suction port.

It is preferable that projections are provided on the inner portions of the pair of bearing portions, respectively, so as to come into contact with the suction port.

A rotary pipe having a rotating shaft extending in the width direction of the suction port is connected to the suction port so as to be able to swing up and down. The support pipe is connected to the rotary pipe. The projection of the bearing portion is provided on the inner portion of the bearing portion so that the projection is located substantially on the same axis as the rotary shaft portion of the rotary pipe when the cleaner body and the suction port are connected. Is preferred.

According to the first aspect of the present invention, when the vacuum cleaner is deformed into a state of use as an upright, the vacuum cleaner is provided with a pair of bearings for mounting wheels mounted on a rear portion of the main body of the cleaner. Since the suction port is clamped, the main body of the cleaner and the support pipe are combined. Therefore, the cleaner body does not rattle during use.

According to a third aspect of the present invention, a slope is formed on at least a part of a rear surface of the head of the suction port so as to be inclined so as to descend toward the rear of the suction port. By moving the wheels of the main body of the cleaner along the slope when deforming to the state of use as an upright, the cleaner main body can be easily and accurately guided to a predetermined position.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a vacuum cleaner according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a vacuum cleaner in use as an upright showing one embodiment of the vacuum cleaner of the present invention, FIG. 2 is a view A of the vacuum cleaner of FIG. 1, and FIG. FIG. 4 is a cross-sectional view taken along the line III-III of the electric vacuum cleaner and FIG. 4 is an enlarged view of a part of a partially cutaway portion showing a state in which the electric vacuum cleaner is being used as an upright in the vacuum cleaner.

As shown in FIGS. 1 to 4, the vacuum cleaner according to the present embodiment is used as an upright by the cleaner body 1 being detachably fixed to a support pipe 2 (FIG. 1). This is a dual-purpose vacuum cleaner that can be used in a state where the cleaner main body 1 is detached from the support pipe 2 and in a handy state where only the cleaner main body 1 is used. When the cleaner main body 1 is detached from the support pipe 2, the cleaner main body 1 is attached to the cleaner main body 1 using a front caster 11 and a pair of rear wheels 12 a and 12 b.
Can be used by rolling the floor surface, or it can be used in a hand-held manner by gripping the handle 13.

The vacuum cleaner shown in FIGS. 1 and 2 comprises a cleaner body 1, a support pipe 2, a rotary bend 3,
It comprises a rotary pipe 4, a suction port 5, and a hose 6.

The cleaner body 1 houses therein a dust collection chamber and an electric blower chamber (both not shown).

A pair of bearings 14a and 14b for rotatably mounting a pair of wheels 12a and 12b are provided at the rear of the main body 1 so as to protrude rearward of the main body 1. The distance between the bearings 14a, 14b is set to such an extent that the neck 5b of the suction port 5 can be clamped by the inner portions of the pair of bearings 14a, 14b.

As shown in FIGS. 2 and 3, in the vacuum cleaner of the present embodiment, bearing portions 14a, 14b
The protrusions 15a, 15b, which will be described later, protrude from the inside of the bearing, so that the interval between the insides of the bearings 14a, 14b
It is slightly larger than the width of the neck 5b. However, when there are no projections 15a and 15b, the interval between the inner portions may be set to be substantially equal to the width of the neck 5b.

As shown in FIG. 1, the support pipe 2 has an upper end opening 2 a connected to a suction port 1 a of the cleaner body 1 through a hose 6. A grip 7 to be held by hand is fixed to the upper part of the support pipe 2.

As shown in FIGS. 1-2, the cleaner body 1
Is detachably fixed to the front side of the support pipe 2 by a fixing method described later.

The support pipe 2 and the rotary bend 3 are removably connected by a C-ring (not shown) so that they cannot rotate. The rotary bend 3 and the rotary pipe 4 are rotatably connected. Reference numeral 8 denotes a lock piece for preventing the rotary pipe 4 from coming off the rotary bend 3, and reference numeral 9 denotes a hollow rotary shaft formed integrally with the lower end 4 c of the rotary pipe 4. The rotation shaft 9 is rotatably connected to the rear of the suction port 5. Therefore, the rotary pipe 4 (and the rotary bend 3 and the support pipe 2 connected to the rotary pipe 4) can swing up and down.

The suction port 5 comprises a head 5a and a neck 5b narrower than the head 5a. A slope 16 for guiding the cleaner body 1 is formed on at least a part of the rear surface of the head 5a of the suction port, for example, on the entire rear surface. The slope 16 is inclined so as to descend as it goes rearward of the suction port 5. Further, in order to guide the cleaner body 1 more accurately, the slope 16 is moved to the wheels 12a, 12b.
May be formed only in a width of about the width of. In addition, 17 in FIGS. 3-4 is a receiving part for receiving the cleaner main body 1 when the cleaner main body 1 is attached to the support pipe 2. Also,
Reference numeral 18 denotes a suction port wheel.

When the vacuum cleaner constructed as described above is transformed into a use state as an upright, first,
By fitting the downward concave portion 1c in FIG. 4 formed at the rear end of the lower surface 1b of the cleaner main body 1 to the upward convex portion 4d in FIG.
The lower part of the cleaner body 1 is fixed. Then, the vacuum cleaner body 1
Is brought into contact with the support pipe 2 so that the downward clamp hook 10 in FIG. 1 provided on the support pipe 2 is fitted into the upward recess 1 d in FIG. Then, as shown in Fig. 1,
The lower surface 1b of the cleaner body 1 can be fixed to the outer surface of the support pipe 2. In the state of use as an upright, the wheels 12a and 12b abut on the floor. On the other hand, when the cleaner body 1 is detached from the support pipe 2, the release hook 10a of the clamp hook 10 is slid upward to pull out the clamp hook 10 from the concave portion 1d, and then the fixing method described above. You can remove it in the reverse order.

As described above, the rear surface 1e of the cleaner main body 1 comes into contact with the suction port 5 when it is transformed into a state of use as an upright. At the same time, a pair of bearings 14a, 14 protruding from the rear of the cleaner body 1 for mounting wheels.
The suction port 5 is clamped in the inner part of the b. Therefore, the cleaner body 1 and the suction port 5 are united, that is, substantially integrated with each other by bringing the rear surface 1e and the pair of bearing portions 14a and 14 into contact with the suction port 5.
Therefore, not only the upper and lower two places are fixed to the above-mentioned support pipe 2, but also three places are fixed to the suction port 5, so that the cleaner body 1 rattles during use. There is no.

Further, since the neck 5b of the suction port 5 sandwiched between the pair of bearings 14a, 14b is narrower than the head 5a, a slope 16 for guiding can be secured at the rear surface of the head 5a. At the same time, in the state of use as an upright, the wheels 12a and 12b are arranged inside in the width direction of the head 5a, so that the wheels do not hit the obstacles 12a and 12b during use.

Further, since a slope 16 for guiding is formed on the rear surface of the head 5a of the suction port 5, the wheel 12 of the cleaner body 1 is deformed when it is used in an upright state.
If a and 12b are moved along the slope 16, the cleaner main body 1 can be easily and accurately guided to the position where the concave portion 1c of FIG. 4 is fitted to the convex portion 4d. as a result,
It becomes easy to set the cleaner main body 1 in a use state as an upright.

Further, projections 15 which come into contact with the suction port 5 are respectively provided on inner portions of the pair of bearing portions 14a and 14b.
Since a and 15b are provided, it is possible to make a partial, almost pinpoint contact at a desired position on the surface of the suction port 5. As a result, the friction between the bearings 14a, 14b and the suction port 5 is reduced.

For example, in the case of the vacuum cleaner according to the present embodiment, the rotary pipe 4 having the rotating shaft 9 extending in the width direction of the suction port 5 is connected to the suction port 5 so that the rotary pipe 4 can swing up and down. On the other hand, it is connected at the position of the rotating shaft 9,
The support pipe 2 is connected to the rotary pipe 4.

In this case, the pair of bearings 14a, 1
The protrusions 15a and 15b of the rotary pipe 4b are located at a position A (see FIG. 4) substantially coaxial with the rotary shaft 9 of the rotary pipe 4 when the cleaner body 1 and the suction port 5 are connected.
It is preferable to be provided on the inner side of the bearings 14a and 14b. The reason is as follows. When used as an upright, the support pipe 2 (and the cleaner body 1 and the rotary bend 3 connected thereto) are used.
When the rotary pipe 4) is swung up and down around the rotating shaft 9, the projections 15a and 15b
Rotate and / or move relative to the sides of the
However, since the projections 15a and 15b are substantially at the position A of the center of rotation of the rotating shaft 9, the projections 15a and 15b
Hardly moves with respect to the side surface of, but only rotates near position A. Therefore, there is almost no frictional resistance between the projections 15a and 15b and the suction port 5, so that the support pipe 2 can be easily swung. Further, the protrusions 15a and 15b do not damage the side surface of the suction port 5.

[0033]

According to the present invention, since the suction port is sandwiched between the pair of wheel bearings in the state of use as an upright, the stability of the cleaner body can be improved.

Further, by forming a slope on the rear surface of the head portion of the suction port, it is possible to easily position the fixed portions of the main body of the cleaner and the support pipe when deformed to a state of use as an upright. it can.

[Brief description of the drawings]

FIG. 1 is a side view of a vacuum cleaner in use as an upright showing one embodiment of the vacuum cleaner of the present invention.

FIG. 2 is an A view of the vacuum cleaner in FIG.

FIG. 3 is a sectional view taken along line III-III of the electric vacuum cleaner in FIG. 2;

FIG. 4 is an enlarged view of a partially cut-away main part showing a state in which the electric vacuum cleaner in FIG. 1 is being transformed into a use state as an upright;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Prop pipe 5 Suction port 12a, 12b Wheel 14a, 14b Bearing part 15a, 15b Projection 16 Slope

Claims (5)

[Claims] 1. A vacuum cleaner comprising: a suction port, a support pipe connected to the suction port, and a cleaner main body detachably mounted on the support pipe; A vacuum cleaner in which a pair of bearings for attaching a pair of wheels is provided to project rearward of the cleaner body, and the suction port can be sandwiched by inner portions of the pair of bearings. 2. The vacuum cleaner according to claim 1, wherein a portion of the suction port sandwiched between the pair of bearing portions is formed to be narrower than a head of the suction port. 3. The vacuum cleaner according to claim 2, wherein at least a part of the rear surface of the head of the suction port is formed with a slope that is inclined in such a manner as to descend toward the rear of the suction port. 4. The vacuum cleaner according to claim 1, wherein the inner portions of the pair of bearing portions are provided with protrusions each contacting the suction port. 5. A rotary pipe having a rotating shaft extending in a width direction of the suction port is connected to the suction port so as to be able to swing up and down, and the support pipe is connected to the rotary pipe. When the projections of the pair of bearings are located on substantially the same axis as the rotary shaft of the rotary pipe when the cleaner body and the suction port are connected,
3. The method according to claim 1, wherein the bearing is provided on an inner portion of the bearing.
The vacuum cleaner according to 3 or 4.