JP3166993B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner provided with an exhaust port for blowing air sucked by an electric blower to the outside of a cleaner body.

[0002]

2. Description of the Related Art Conventionally, for example, in a vacuum cleaner having a cleaner body moving on a floor surface, a dust collector bag sucks dust together with air by an electric blower provided inside the cleaner body. In a state where dust is captured, the sucked air is blown out of the cleaner body from an exhaust port.

[0003] For example, a configuration is known in which this exhaust port is provided on the rear end face of the cleaner body. This exhaust port
A lattice-shaped louver is provided substantially at the center of the rear end surface of the cleaner body so as to cover the exhaust port. Further, from the periphery of the exhaust port, a leg is protruded rearward, so that the cleaner can hold the cleaner body with its rear end face upright.

However, in the configuration in which the exhaust port is provided on the rear end surface of the cleaner body, for example, the leg around the exhaust port is placed on a carpet with the cleaner body standing on a soft surface to be cleaned such as a carpet. In some cases, the air vents may get clogged and block the exhaust port. When the electric blower is operated in a state where the exhaust port is closed, the exhaust pressure increases, the load on the electric blower increases, and there is a problem that the life and performance of the electric blower are reduced. I have.

In order to prevent such a problem, an exhaust port is provided on the upper surface of the cleaner body to exhaust air upward, or an exhaust port is provided on a side surface of the cleaner body to exhaust air laterally. Are known.

However, when the exhaust port is provided on the upper surface or the side surface of the cleaner body, the exhaust air is blown upward or to the side, so that the exhaust air is blown above the user's body. This causes problems such as causing discomfort and blowing off dust on the surface to be cleaned by exhaust air.

[0007]

As described above, in the configuration in which the exhaust port is provided on the rear end face of the cleaner body, when the cleaner body is used in an upright position, the exhaust port is closed and the electric blower is not used. There is a problem that the load increases. In addition, in the configuration in which the exhaust port is provided on the side surface or the upper surface of the cleaner body, the exhaust air is blown upward or sideward, which causes discomfort and blows off dust on the surface to be cleaned. have.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has been made in view of the fact that the exhaust port is not easily blocked and does not cause discomfort to the user or blow off dust on the surface to be cleaned. The purpose is to provide a machine.

[0009]

The vacuum cleaner of the present invention comprises:
Near the rear, toward the rear, a cleaner body provided with a rear end portion having a cross-sectional shape in a direction perpendicular to the axis along the front-rear direction smaller than a portion adjacent to the front side, and provided inside the cleaner body. An electric blower provided with an exhaust port that blows out the air sucked by the electric blower to the outside of the cleaner main body, wherein the exhaust port opens toward the rear of the cleaner main body. , together are provided side by side a plurality of rows along the periphery circumference <br/> of the rear end portion, through the ribs substantially along the longitudinal direction before Symbol cleaner body, the position in the longitudinal direction of the cleaner body It is provided in a step-like manner with a difference.

[0010]

[Action] In the electric vacuum cleaner of the present invention, an exhaust port, open toward the rear of the cleaner body, provided with side by side a plurality of rows along the periphery circumference of the rear end portion, of the cleaner body these exhaust ports Since the position of the cleaner body is shifted stepwise in the front-rear direction through ribs extending substantially in the front-rear direction, exhaust air is dispersed and blown out, and the rear end part is temporarily directed downward. The exhaust port is not blocked and the exhaust passage is secured even in the state where the air outlet is set up.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vacuum cleaner according to an embodiment of the present invention.

In FIG. 1 to FIG. 3, reference numeral 11 denotes a cleaner main body.
An upper case 14 is attached to the upper side of the main body case 12, and a lid 15 is attached to the front upper side of the upper case 14 so as to open and close the opening of the main body case 12 from above. Have been. Further, the upper side of the upper case 14 is continuously covered with a case cover 16, an accessory cover 17, and an exhaust port cover 18 from the rear end of the lid 15 to the upper rear end of the main body case 12. As a whole, a substantially eggshell-shaped cleaner body 11 whose longitudinal direction is the front-rear direction is formed. Further, a substantially U-shaped handle 19 slidable up and down is attached to the cleaner body 11 at a substantially central portion in the front-rear direction.

In the main body case 12, a turning wheel 21 is mounted on the lower front side so as to be variable in direction and rotatable, and a pair of driven wheels 22 on both sides are rotatably mounted on both rear sides. Further, a band-shaped bumper 23 made of an elastic body is attached to the front peripheral surface of the main body case 12. In addition, the pair of driven wheels 22 on both sides is supported such that the rear ends of the driven wheels 22 slightly protrude from the rear end of the cleaner body 11.

The inside of the main body case 12 has a lattice hole 25a.
The front and rear are partitioned by a partition wall 25 having
, A dust collecting chamber 27 for storing a dust collecting bag 26 is formed, and an electric blower chamber 28 is formed behind the partition wall 25. In addition, a detachable auxiliary filter 29 that covers the lattice hole 25a is attached to the front side of the partition wall 25.

The dust collecting chamber 27 is provided with a holder 31 facing the opening of the main body case 12, and the holder 31 holds the opening frame 26a of the dust collecting bag 26 in a detachable manner.

On the other hand, the electric blower chamber 28 houses an electric blower 32 having a front side as an intake side and a rear side as an exhaust side. The electric blower 32 has an intake hole 32a formed on the front surface and blowout holes 32b formed on both sides at the rear. The electric blower 32 has vertical support walls 33 and 3.
The supporting members 4 and 35 support the supporting members 36 and 37 via rubber holding members 36 and 37, and the surroundings are covered with a muffler 38.

In the electric blower chamber 28, the intake side and the exhaust side of the electric blower 32 are air-tightly separated by an annular front holding member 36, and the intake side of the electric blower 32 is interposed through a lattice hole 25a. The exhaust side of the electric blower 32 is communicated with the inside of the exhaust port cover 18 while communicating with the dust collecting chamber 27.

Further, on one side of the electric blower room 28, FIG.
As shown in FIG. 1, a code reel storage chamber 41 is formed in a compartment, and a code reel (not shown) is wound and stored in the code reel storage chamber 41.

The lid 15 is rotatably supported with its rear end as a fulcrum, and is provided in the vicinity of the opening of the main body case 12 by a clamp 44 rotatably provided at the front lower end. The locking portion 45 is detachably locked. Then, by raising the clamp 44 upward,
At the same time as the engagement of the clamp 44 is released, the lid 15 is turned upward to open the opening, and the dust collection bag 26 is replaced.

An opening 51 is formed in the lid 15 and extends upward from the front side.
A cylindrical connecting body 54 is rotatably mounted inside the air path plate 52, and inside the connecting body 54, the outside of the cleaner body 11 and the dust collection chamber 27 are attached. Is formed.

A hose (not shown) having an operation section at the tip is rotatably connected to the suction port 55,
In addition, at the end of this hose,
A suction port is connected. Also, the outlet
A plate-like shutter 56 for closing the insertion port 51 without connecting the hose is provided between the suction port 55 and the suction port 55 so as to be freely opened and closed.

Further, the lid 15 is provided with a display panel 58 provided with a plurality of light emitting diodes 57 and the like for indicating the operating state of the electric blower 32 and the like.

The case cover 16 provided on the upper part of the cleaner body 11 is provided with a recess 16a for gripping the handle 19, and one side of the recess 16a has
As shown in FIG. 4, an operation button 61 for winding and storing the code reel in the code reel storage chamber 41 is provided.

An accessory cover 17 provided on the rear side of the case cover 16 is openably and closably attached, and is attached to an accessory storage portion 62 formed on the lower side of the accessory cover 17. Accessories such as mouth 63 are stored.

An exhaust port cover 18 provided on the rear side of the accessory cover 17 has a rear end face 18a constituting a rear end.
Are formed in a substantially vertical plate shape, and the peripheral surface 18
b is formed so that the diameter becomes smaller stepwise from the front side to the rear side. The peripheral surface portion 18b has three ribs 71, which are formed in a substantially semicircularly curved plate shape along the outer peripheral surface of the cleaner body 11, and which are parallel to each other.
72, 73 are provided substantially concentrically, and these ribs 71, 72, 73
Between, two rows of exhaust outlets 74 and 75 are arranged in rows along the outer circumference
All are formed.

The three ribs 71, 72, 73 are sequentially arranged so that the radial dimension increases from the inside to the outside, and are sequentially arranged at positions shifted from the rear to the front. . Therefore, the inner exhaust port 74 is
The outer exhaust port 75 is formed outside and in front of the inner exhaust port 74, while being formed outside and in front of the rear end face 18a.

The three ribs 71, 72, 73 are
It is connected and supported by a plurality of support ribs 77 substantially orthogonal to 1, 72, and 73. Also, two ribs 72 located on the outside,
The rear end of the projection 73 is slightly protruded downward and has a large thickness.

According to the vacuum cleaner of this embodiment,
Exhaust ports 74 and 75 for blowing air sucked in by the electric blower 32 to the outside of the cleaner main body 11 are formed in a semicircular shape along the outer peripheral surface of the cleaner main body 11, and these exhaust ports 7
4, 75 are provided in multiple stages with different diameters and shifted in the front-rear direction of the cleaner body 11, so that each exhaust port
A large distance between 74, 75 and the rear end face of the cleaner body 11 can be ensured. Therefore, for example, even when the cleaner body 11 is erected on a soft surface such as a carpet, the respective exhaust ports 74 and 75 are not blocked, as in a normal use state in which the cleaner moves on the floor. Exhaust passage can be secured,
An increase in the exhaust pressure and an increase in the load on the electric blower 32 can be prevented, and a reduction in the life and performance of the electric blower 32 can be prevented.

Each of the exhaust ports 74 and 75 is open toward the rear side of the cleaner main body 11, and is formed in a multi-stage shape in a substantially semicircular shape along the outer peripheral surface of the cleaner main body 11. Therefore, the exhaust wind of the electric blower 11 is guided while bending the inside of the exhaust port cover 18 and then dispersed toward the rear side along the outer peripheral surface of the cleaner body 11 so that the momentum is weakened. It is blown out with. Therefore, it is necessary to prevent a user located in front of or on the side of the cleaner body 11 from being exposed to the exhaust air to cause discomfort, or to prevent dust on the surface to be cleaned from being blown out by the exhaust air and scattered. Can be.

In the embodiment shown in FIGS. 1 to 3, the rear end face 18a of the exhaust port cover 18 is formed in a substantially planar shape, but as shown in FIG. From the upper center of the rear end face 18a of the located exhaust port cover 18, a leg portion 81 constituting a rear end portion is integrally protruded toward the rear side, and this leg portion 81 and a pair shown in FIGS. An installation surface substantially perpendicular to the lower surface of the main body case 12 can be formed at three points with the rear end of the driven wheel 22.

By forming the legs 81, the contact area between the cleaner main body 11 and the floor surface when the cleaner main body 11 stands on a hard wooden floor, for example, is reduced. The floor surface can be prevented from being damaged, and the cleaner body 11 can be stably supported in an upright state. The legs 81 can be formed separately from the exhaust port cover 18, or a plurality of legs 81 can be formed.

In the above embodiment, three ribs 71,
Although the two exhaust ports 74 and 75 are formed between 72 and 73, the number of ribs may be increased to further increase the number of exhaust ports.

Further, a rear end face 18a of the exhaust port cover 18
A hole can be formed at the step between the exhaust ports 74 and 75 so that accessories can be inserted and stored.

The shape of the cleaner body 11 is not limited to a substantially eggshell shape, but may be, for example, a substantially columnar shape or a substantially prismatic shape.

[0035]

According to the electric vacuum cleaner of the present invention, an exhaust port, open toward the rear of the cleaner body, provided with side by side a plurality of rows along the periphery circumference <br/> the rear end, these The exhaust port of the vacuum cleaner is shifted in the front-rear direction of the cleaner body through a rib that extends substantially in the front-rear direction of the cleaner body, and is provided in a step-like manner , so that the cleaner body is temporarily erected with its rear end downward. But
The exhaust port is not blocked and the exhaust passage is secured.
Therefore, even when the cleaner main body is set up, the load on the electric blower can be prevented from increasing, and the life and performance of the electric blower can be prevented from lowering. Further, since the plurality of exhaust ports are provided in a stepped manner through the ribs, compared to a configuration in which the exhaust ports are opened on the inclined surface, the exhaust ports can be easily separated from each other along the front-rear direction of the cleaner body, and the rear end The exhaust port can be reliably prevented from being blocked in a state where the cleaner body is set up with the portion facing downward. In addition, the exhaust wind is dispersed and blown out toward the rear of the cleaner body along the outer periphery of the rear end, so that the exhaust wind is weakened, which may cause discomfort to the user or cause the user to be unable to clean the surface to be cleaned. Can be prevented from being blown away.

[Brief description of the drawings]

FIG. 1 is a rear view showing an embodiment of the vacuum cleaner of the present invention.

FIG. 2 is a sectional view of the electric vacuum cleaner.

FIG. 3 is a cross-sectional view of a part of the electric vacuum cleaner.

FIG. 4 is a perspective view of a part of a vacuum cleaner showing another embodiment of the present invention.

[Explanation of symbols]

 11 Vacuum cleaner body 18a Rear end surface that forms the rear end 32 Electric blower 72 Rib 74 Exhaust vent 75 Exhaust vent 81 Legs that constitute the rear end

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kiyoshi Ishikawa 43, Horiyamashita, Hadano-shi, Kanagawa Prefecture Inside the Hadano Plant of Tokyo Electric Co., Ltd. (56) References JP-A-60-222021 (JP, A) 34572 (JP, A) Japanese Utility Model Showa 60-24258 (JP, U) Japanese Utility Model Showa 50-131175 (JP, U) Japanese Utility Model Utility Model 4-135257 (JP, U) Japanese Utility Model Utility Model 55-30443 (JP, Y2) Jikken Sho 51-51580 (JP, Y2)

Claims (1)

(57) [Claims] 1. A cleaner main body provided with a rear end near a rear end, the rear end having a cross-sectional shape in a direction perpendicular to an axial line extending in the front-rear direction is smaller than a part adjacent to the front side. And an electric blower provided inside the vacuum cleaner, wherein an exhaust port is provided for blowing out the air sucked by the electric blower to the outside of the cleaner body, wherein the exhaust port is located behind the cleaner body. Open to
Together provided side by side a plurality of rows along the periphery circumference of the rear end portion, through the ribs substantially along the longitudinal direction before Symbol cleaner body, at different positions in the longitudinal direction of the cleaner body
An electric vacuum cleaner characterized by being provided in steps .