JPH11104044A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the weight of a vacuum cleaner main body from being applied to a suction opening so as to improve the moving performance of the suction opening by arranging the center of rotation of a rear wheel in the rear of the center of rotation of a rotating shaft part formed on the lower end of a rotary pipe. SOLUTION: A vacuum cleaner is disposed on the vacuum cleaner main body in such a manner that when the lower surface of the vacuum cleaner main body is installed on a support pipe 2, the center O1 of rotation of rear wheels 12a, 12b of the vacuum cleaner main body is in the rear of the center O2 of rotation of a turning shaft part 9 formed on the lower end of a rotary pipe 4. By this arrangement, when the cleaner is used upright, a suction opening 5 is moved with the rotary pipe 4 and the support pipe 2 tilted backward, so that the center O2 of rotation of the turning shaft part 9 runs on the center O1 of rotation of wheels 12a, 12b to float the rear part of the suction opening 5 from the floor surface. Thus, the vacuum cleaner main body and the rear part of the suction opening 5 are supported by the wheels 12a, 12b so that load of the vacuum cleaner main body is not applied to the suction opening 5.

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 which can be 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. Is a dual-purpose vacuum cleaner that can be used with the pipe removed from the pipe.
No. 455.

[0003] Such a conventional dual-purpose vacuum cleaner is
As shown in FIG. 11, the cleaner body 31 and the hose 4
0, a support pipe 32, a rotary bend 33,
And a suction port 34. By connecting these components in order, the cleaner main body 31 and the support pipe 32 are in a use state as a canister type in which they are separated.

The rotary bend 33 is connected to the suction port 34 so as to be rotatable around a rotation center O ₄ .

Further, by fitting a projection 36 projecting from the outer surface of the support pipe 32 into a recess 35 formed on the lower surface side of the cleaner body 31, an upright shown in FIG. It can be transformed into a use state. In use condition as upright,
The cleaner body 31 is in contact with the suction port 34. Also, a rear wheel 3 is provided on a rear portion 31a of the lower end of the cleaner body 31.
8 are connected.

[0006]

However, in the conventional vacuum cleaner, as shown in FIG.
When the suction port 34 is moved while tilting the rotary bend 33 backward, the cleaner main body 31 rests on the upper surface of the suction port 34. Therefore, there is a problem that the load of the cleaner body 31 is applied to the suction port 34, and as a result, the mobility (so-called ease of movement and operability) of the suction port 34 deteriorates.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a vacuum cleaner in which the suction port has good mobility in an upright use state.

[0008]

The vacuum cleaner of the present invention comprises:
(A) a cleaner body having wheels at least in the rear,
(B) a support pipe having an upper opening connected to the suction port of the cleaner body; (c) a rotary pipe connected to a lower opening of the support pipe; and (d) a rotary pipe connected to a lower opening of the rotary pipe. The vacuum cleaner main body is detachably attached to the support pipe, and the lower surface of the cleaner body is mounted on the support pipe. The rear wheel is arranged on the cleaner body such that the center of rotation of the rear wheel of the cleaner body is behind the center of rotation of the rotating shaft formed at the lower end of the rotary pipe. It is characterized by the following.

A wheel is provided at a rear portion of the suction port, and when a lower surface of the cleaner body is attached to the support pipe, a rotation center of a wheel of the suction port is rotated by a rear wheel of the cleaner body. Preferably, it is arranged behind the center.

[0010] A handle is provided on an upper surface of the cleaner body, and a lower surface of the cleaner body is mounted on the support pipe, and the floor surface is substantially vertical when the cleaner body and the support pipe stand substantially vertically. The floor contact part that contacts the
It is preferable to extend the handle.

[0011] The support pipe is extendable and retractable, and a cord wrapping portion for winding a power cord is fixed to an expandable portion of the support pipe, and a lower surface of the cleaner body is attached to an outer surface of the support pipe. And a floor contact portion that substantially abuts the floor when the cleaner main body and the support pipe stand substantially vertically in a state where the support pipe is contracted. Preferably, it is provided.

In the vacuum cleaner of the present invention, when the lower surface of the cleaner main body is mounted on the support pipe, the center of rotation of the rear wheel of the cleaner main body is formed by the rotation shaft portion formed at the lower end of the rotary pipe. A rear wheel is disposed on the cleaner body so as to be behind the center of rotation.

For this reason, if the suction port is moved while the support pipe is tilted backward in the state of use as an upright, the rear part of the suction port floats from the floor surface.

Accordingly, the rear part of the cleaner body and the suction port can be supported by the rear wheel, and as a result, the force of the suction port pressing the floor can be greatly reduced, and the mobility of the suction port can be reduced. Will be better.

[0015]

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 showing a state in which a main body of a vacuum cleaner according to an embodiment of the present invention is removed from a support pipe, and FIG. 2 is a state in which the vacuum cleaner of FIG. FIG. 3 is an enlarged side view of the vacuum cleaner shown in FIG.
FIG. 4 is a side view showing a state in which a suction port is moved on a floor surface in the vacuum cleaner of FIG. 2, and FIG. 5 is a state in which the vacuum cleaner of FIG. 1 is used as an upright. FIG. 6 is an enlarged view of a main part of a partially cutaway showing a state in the middle of the operation, and FIG. 6 is a side view of a vacuum cleaner provided with a handle having a floor contact portion, showing another embodiment of the vacuum cleaner of the present invention. Reference numeral 7 denotes a vacuum cleaner having a cord wrapping portion having a floor contact portion, which shows still another embodiment of the vacuum cleaner of the present invention. FIG. 8 is a side view showing a state in which a support pipe of the vacuum cleaner of FIG. 7 is extended, and FIG. 9 is a side view showing still another embodiment of the vacuum cleaner of the present invention. An upright showing an example in which a skimmer attachment showing the form of Enlarged sectional explanatory view and FIG. 10 in the use state Te is an enlarged sectional view showing a handy condition of using only the vacuum cleaner body of FIG.

As shown in FIGS. 1 to 5, the vacuum cleaner according to the present embodiment is used as an upright (FIG. 2) by detachably fixing the cleaner main body 1 to a support pipe 2. 4), the vacuum cleaner main body 1 is detached from the support pipe 2 (see FIG. 1), and the dual-purpose vacuum cleaner can be used in a handy state (see FIG. 10) used only with the cleaner main body 1. . As shown in FIG.
When the cleaner main body 1 is detached from the support pipe 2, the cleaner main body 1 is rolled on the floor using a front caster 11 and a pair of rear wheels 12 a and 12 b attached to the cleaner main body 1. It can also be used by hand, or it can be used in a hand-held type by gripping the handle 13.

The vacuum cleaner shown in FIGS. 1 to 5 has a vacuum cleaner main 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 contains therein a dust collecting chamber and an electric blower chamber (both not shown). As shown in FIGS. 2 to 5, a pair of bearings 14 a and 14 b for rotatably mounting a pair of wheels 12 a and 12 b are provided at the rear of the cleaner body 1 so as to protrude rearward of the cleaner body 1. Have been. The pair of bearings 14a, 14b
The neck 5b of the suction port 5 is clamped by the inside portion of the suction port.

As shown in FIGS. 2 and 3, when the lower surface 1b of the cleaner body 1 is mounted on the support pipe 2, the wheels 12a and 12b
The rotation center O ₁ of the rotary pipe 4 is at the lower end 4 of the rotary pipe 4.
such that rearward than the rotational center O ₂ of the hollow rotation shaft 9 which is integrally formed on the c, of the cleaner main body 1 bearing portion 14a,
14b.

As shown in FIG. 1, the support pipe 2 has an upper end opening 2a connected to a suction port 1a 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 FIG. 2, the lower surface 1b of 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 detachably connected to each other by a C-ring (not shown) so as to prevent rotation. 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. The rotary shaft 9 of the rotary pipe 4 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.

As shown in FIG. 5, the suction port 5 has a head 5a and a neck 5b having a width smaller than that of the head 5a. A suction port wheel 18 is provided at the rear of the suction port 5. As shown in FIG. 2, when the lower surface 1 b of the cleaner body 1 is attached to the support pipe 2, the rotation center O ₃ of the suction wheel 18 is set to the rotation of the suction wheel 18. wheels 12a, is disposed further rearward than the rotational center O ₁ of 12b.

When the electric vacuum cleaner configured as described above is deformed into a state of use as an upright, first, as shown in FIG. 2, it is formed at the rear end of the lower surface 1b of the main body 1 of the vacuum cleaner. The lower portion of the cleaner body 1 is fixed by fitting the downward concave portion 1c into the upward convex portion 3d provided on the rotary bend 3. Next, the cleaner body 1 is brought into contact with the support pipe 2 to thereby make the cleaner body 1
When the downward clamp hook 10 provided on the support pipe 2 is fitted into the upward concave portion 1d formed at the front end of the lower surface 1b of the main body 1, the lower surface 1b of the cleaner body 1 is fixed to the outer surface of the support pipe 2. can do. 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 10 of the clamp hook 10 is used.
By sliding a upward, the clamp hook 10 is pulled out of the concave portion 1d, and then removed by a procedure reverse to the above-described fixing method.

As shown in FIG. 2, the lower surface 1b of the main body 1 of the vacuum cleaner is
When mounted on the rear wheel 12 of the cleaner body 1
a, so that the rotational center O ₁ of 12b is rearward of the rotation center O ₂ of the rotary shaft portion 9 formed at the lower end 4c of the rotary pipe 4, the wheels 12a, 12b are disposed in the cleaner body 1 ing.

With this configuration, as shown in FIG. 4, when the suction port 5 is moved while the rotary pipe 4 and the support pipe 2 are tilted backward in the use state as an upright, the rotation shaft rotation center O ₂ wheels 12a parts 9, are riding on a rotating center O ₁ of 12b, the rear portion of the suction port 5 is to float from the floor.

Therefore, the cleaner body 2 and the suction port 5
By supporting the rear portion with the wheels 12a and 12b, the load of the cleaner body 1 is not applied to the suction port 5, and the force by which the suction port 5 presses the floor surface and the frictional force proportional thereto can be greatly reduced. it can. As a result, the mobility of the suction port 5 is improved.

On the other hand, as shown in FIG. 1, when the vacuum cleaner main body 1 is used after being detached from the support pipe 2 (so-called canister state), the suction wheel 18 comes into contact with the floor surface. However, since the load of the cleaner body 1 is not applied to the suction wheel 18, the mobility of the suction port 5 does not decrease (it does not become heavy).

When the vacuum cleaner of the present embodiment is stored or stored, the vacuum cleaner is stored or stored in a state of use as an upright as shown in FIG. Specifically, the lower surface 1b of the cleaner main body 1 is attached to the support pipe 2, and the cleaner main body 1 and the support pipe 2 are stored or stored in a state of being substantially vertically erected.

In this stand state, the suction port wheel 18 and the wheels 12a, 12b are in contact with the same floor, and the rotation center O ₃ of the suction port wheel 18 is adjusted to the rotation center of the wheels 12a, 12b. It is arranged behind O ₁ (in other words, the contact point with the floor of the suction wheel 18 is behind the contact with the floor of the wheels 12a, 12b). Therefore, the cleaner main body 1 is not easily fall backwards the rotation center O ₁ around. Therefore, the stability of the vacuum cleaner can be improved, and the fall can be prevented.

As another means for preventing the vacuum cleaner from falling in the stand state, as shown in FIG. 6, a handle 21 having a floor contact portion 22 is provided on the upper surface 1e of the cleaner body 1. Is also good. The floor contact portion 22 is provided when the lower surface 1b of the cleaner main body 1 is attached to the support pipe 2 and the cleaner main body 1 and the support pipe 2 are almost vertically standing during storage or storage. In addition, it extends integrally with the handle 21 so as to be in contact with the floor surface.

As shown in FIG. 6, the floor contact portion 2 of the handle 21 is provided.
The floor contact portion 22 can support the cleaner main body 1 even when the force F from the rear acts on the cleaner main body 1 or the support pipe 2 by contacting the floor 2 with the floor. it can. As a result, stability is improved and overturn prevention can be achieved.

Further, as another means for preventing the vacuum cleaner from tipping over, as shown in FIGS. 7 and 8, the support pipe 2 is expandable and contractable, and the expansion and contraction portion 2b of the support pipe 2 is provided.
Winding part 2 for winding power cord 23 around
4 is provided, and a floor contact portion 25 is extended from the cord winding portion 24.

The cord wrapping portion 24 is provided on the base plate 2
A ring portion 24b formed at the upper end of 4a is adhered to the extendable portion 2b, and a hook 24c for winding the power cord 23 is fixed to a rear surface of the base plate 24a by a bolt 24d.

In FIG. 7, the floor contact portion 25 corresponds to the lower end portion of the base plate 24a of the cord winding portion 24.

When the power cord 23 is wound and a vacuum cleaner is used, as shown in FIG. 8, the operation is performed in a state where the telescopic portion 2b of the support pipe 2 is extended. As shown in FIG. 7, the floor contact portion 25 is attached to the outer surface of the support pipe 2 with the lower surface of the main body 1b of the cleaner in a state where the support pipe 2 is contracted, and When the support 1 and the support pipe 2 stand substantially vertically, they substantially contact the floor surface.

Therefore, when the cleaner body 1 and the support pipe 2 are about to fall rearward, the floor contact portion 25 of the cord wrapping portion 24 comes into contact with the floor, so that the fall can be prevented.

The fulcrum that falls backward has conventionally been the contact point between the suction port wheel 18 and the floor, but in the case of FIG. 7, the floor contact point that is further behind the contact point. 25
, The stability is further improved.

With the configuration shown in FIGS. 7 and 8 as described above, it is possible to store the apparatus in a stably upright state during storage, while having a simple configuration.

Next, as still another embodiment of the present invention, an example in which a skimmer attachment used in a handy state is formed integrally with a cleaner body as shown in FIGS.

Conventionally, there are three modes of use as an upright, a state in which the main body of the vacuum cleaner is detached from the support pipe, and a handy state in which only the main body of the vacuum cleaner is used. In the vacuum cleaner that can be used by transforming it into
When deforming to a handy state, a separate skimmer attachment is attached to the suction port 1a for use.

However, if a separate skimmer attachment is used, the number of parts increases. In addition, it takes time and effort to attach and remove the skimmer attachment.

Therefore, in this embodiment, as shown in FIGS. 9 to 10, the skimmer attachment 26 used in the handy state is formed integrally with the suction port 1a of the cleaner body 1, thereby reducing the number of parts. Workability (vacuum cleaner usability) by eliminating the work of installing and removing attachments
And improved smoothness as a result.

Specifically, the skimmer attachment 26 is formed so as to have an outer diameter that can be fitted to the inner surface of the hose joint 6a, which is a joint part of the hose 6.

The gap between the hose attachment 6 and the cleaner main body 1 can be improved by inserting the gap attachment 26 into the hose joint 6a deeper than in the conventional fitting portion.

Although FIGS. 9 to 10 illustrate the attachment 26 for skimmers as an example, various attachments used in a handy state may be employed.

[0047]

According to the present invention, in the upright use condition, the weight of the cleaner body is not applied to the suction port, so that the mobility of the suction port is improved.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a cleaner main body according to an embodiment of the present invention is detached from a support pipe.

FIG. 2 is an enlarged side view of a main part of a partially cut-away view showing a state in which the vacuum cleaner of FIG.

FIG. 3 is a view of the vacuum cleaner of FIG. 2 as viewed from the direction of arrow A.

FIG. 4 is a side view showing a state in which the suction port is moved on the floor surface in the electric vacuum cleaner of FIG. 2;

FIG. 5 is an enlarged view of a main part of a partially cut-away view showing a state in which the vacuum cleaner of FIG. 1 is being transformed into a use state as an upright;

FIG. 6 is a side view of a vacuum cleaner provided with a handle having a floor contact portion according to another embodiment of the present invention.

FIG. 7 shows a vacuum cleaner having a cord winding portion having a floor contact portion according to still another embodiment of the present invention. It is a side view which shows the state which made the contact part contact the floor surface.

8 is a side view showing a state in which a support pipe of the vacuum cleaner of FIG. 7 is extended.

FIG. 9 is an enlarged cross-sectional view of a main part of a vacuum cleaner according to still another embodiment of the present invention, showing an example in which a skimmer attachment is integrally formed in a vacuum cleaner body and used as an upright;

FIG. 10 is an enlarged sectional explanatory view of a main part showing a handy state using only the cleaner body of FIG. 9;

FIG. 11 is a side view showing a state in which the conventional vacuum cleaner is used as an upright.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Prop pipe 4 Rotary pipe 5 Suction port 9 Rotating shaft part 12a, 12b Wheel

Claims (4)

[Claims] 1. A cleaner body having at least a rear wheel, (b) a column pipe having an upper end opening connected to a suction port of the cleaner body, and (c) a lower end of the column pipe. A rotary pipe connected to the opening, and (d) a suction port connected to a lower end opening of the rotary pipe,
A vacuum cleaner in which the cleaner body is detachably attached to the support pipe, and a rear portion of the cleaner body when a lower surface of the cleaner body is mounted on the support pipe. An electric vacuum cleaner wherein the rear wheel is disposed on the cleaner main body such that the center of rotation of the wheel is behind the center of rotation of a rotation shaft formed at the lower end of the rotary pipe. 2. A rear wheel of the cleaner main body, wherein a wheel is provided at a rear part of the suction port, and when a lower surface of the cleaner body is mounted on the support pipe, a rotation center of a wheel of the suction port is a rear wheel of the cleaner body. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is disposed behind the rotation center of the vacuum cleaner. 3. A handle is provided on an upper surface of the cleaner main body, and a lower surface of the cleaner main body is mounted on the support pipe and the cleaner main body and the support pipe are substantially vertically standing. The vacuum cleaner according to claim 1, wherein a floor contact portion that contacts a floor extends from the handle. 4. The support pipe is extendable and retractable, a cord winding portion for winding a power cord around the expandable portion of the support pipe is fixed, and the lower surface of the cleaner body is an outer surface of the support pipe. A floor surface contact portion which is substantially in contact with the floor surface when the main body of the cleaner and the support pipe stand substantially vertically in a state where the support pipe is contracted while being attached to the cord winding portion. 4. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is extended.