JPH11155773A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive configuration for housing a hose, extension pipe and floor nozzle in the main body of a cleaner while connecting them. SOLUTION: This vacuum cleaner is provided with the main body 21 incorporating a dust chamber 22 on the front side and a motor 23 on the rear side or the like, caster 26 formed of a caster roller 27 while being provided on the lower surface of the main body 21 so as to be freely rotatable and a caster cover 28, rollers 29 supported on both the side faces of the main body 21 so as to be freely rotatable for moving the main body 21, hose 32 connected to a sucking port communicated with the dust chamber 22 and floor nozzle 35 connected through an extension pipe 34 to the hose 32, the extension pipe 34 is provided with a lock part 36, a first holding part 37 to be engaged with the lock part 36 is provided on the front face of the caster cover 28, and the lock part 36 of the extension pipe 34 connected to the hose 32 and the floor nozzle 35 is engaged with the caster cover 28. Thus, housing is enabled without requiring any other component.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner in which attachments such as hoses, extension pipes, floor nozzles and the like are stored while being connected to a cleaner body.

[0002]

2. Description of the Related Art Conventionally, this kind of vacuum cleaner has been disclosed in
As shown in JP-A-3-39355 and the like, the holding portion locking portion attached to the extension tube as a simple storage form,
A configuration in which the attachment was fixed to the main body and housed in the main body while the attachment was connected was common.

Hereinafter, description will be given with reference to FIGS. 14 and 15.
Reference numeral 1 denotes a dust collection chamber 2 formed on the front side, and a dust suction module on the rear side.
And a mechanism room 5 in which the code take-up devices 4 are installed in parallel.
(Hereinafter referred to as the main body).
Reference numeral 6 denotes a front cover provided in front of the dust collection chamber 2 and having an intake port 7, and is formed of a member different from the main body 1.
Reference numeral 8 denotes a caster comprising a caster roller 9 and a caster cover 10 provided on the lower surface of the main body 1, and 11
Are large rollers provided on the right and left rear of the main body 1. Reference numeral 12 denotes a handle composed of a lid 13 for covering the upper part of the dust collecting chamber 2 and a front cover 6. A hose 14 is fixed to the intake port 7 of the front cover 6 via a connection pipe 15, and an extension pipe 16 is fitted to the tip of the hose 14, and a floor nozzle is further attached to the tip. 17 are inserted and connected. A locking portion 18 protruding downward is attached to the extension tube 16, and a groove-shaped holding portion 19 is provided on the front cover 6 so as to face the locking portion 18.

As another conventional example, as shown in FIG. 16, a groove-shaped holding portion 19 is provided on a bottom surface of a main body 1 so as to face a locking portion 18 attached to the extension tube 16. There is also.

With the above structure, the main body 1 is set up as a simple storage, and the locking portion 18 is engaged with the holding portion 19, so that the hose 14, the extension pipe 16, and the floor nozzle 17 are attached to the main body 1.
Can be stored in a state where is connected.

[0006]

However, in the above-described configuration, a holding portion 19 is formed on the front cover 6 or the bottom surface of the main body 1 for engaging with the locking portion 18 for holding the extension tube 16 at the time of simple storage. For this reason, every time the design of the main body 1 is renewed, a configuration for forming the holding portion 19 on the front cover 6 or the main body 1 is required, and the mold configuration becomes complicated and expensive.

Further, since the casters hinder the simple storage, the holding portion 19 cannot be provided at the center of the main body 1 and is formed on the left or right side of the bottom surface of the main body 1. It protrudes outward from the side, and the projected area at the time of simple storage becomes large, so that a wide storage space is required.

Further, when an unreasonable force is applied to the extension tube 16 or the hose 14 at the time of simple storage, the front cover is not required.
6 or the holding portion 18 formed on the bottom surface of the main body 1 may be damaged. If the holding portion 18 is damaged, the front cover 6 or the main body 1 must be replaced. Expenses were expensive.

The present invention solves these problems by providing a simple mold structure and an inexpensive structure, reducing the projected area at the time of simple storage and improving the storage performance. It is intended to facilitate repair when the holding portion is broken.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a main body having a built-in dust collecting chamber in the front and a motor in the rear, and a rotatably mounted lower surface of the main body. A caster formed of a caster roller and a caster cover; a roller rotatably supported on both sides of the main body for moving the main body; and a suction port communicating with the dust collecting chamber. A hose connected to the hose and an extension tube connected to the hose, a locking portion provided on the extension tube, and a first holding portion for engaging the locking portion from the front of the main body. It is arranged on the caster cover.

With the above construction, the engaging portion provided on the extension tube is engaged with the first holding portion provided on the caster cover, so that the hose, the extension tube, and the floor are provided substantially at the center of the body. It can be easily stored with the nozzle attached, the floor nozzle width is evenly arranged with respect to the main body width, the projected area at the time of simple storage is made more efficient and smaller, and the storage performance is improved.

Also, the first holding portion engaging with the locking portion is arranged on the caster cover which can be easily replaced,
In the unlikely event that the first holding part is damaged, repair of parts,
Replacement can be easily performed and repairability can be improved.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION
A main body with a built-in dust collection chamber at the front and a motor at the back,
Castors rotatably provided on the lower surface of the main body
A caster formed of a roller and a caster cover, a roller rotatably supported on both sides of the main body for moving the main body, and a suction port communicating with the dust collecting chamber. A hose, and an extension tube connected to the hose, wherein the extension tube is provided with a locking portion, and a first holding portion for engaging the locking portion from the front of the main body is a caster cover. As a result, the engaging portion provided on the extension tube is engaged with the first holding portion provided on the caster cover, so that the hose, the extension tube, and the floor nozzle are provided substantially at the center of the body. The floor nozzle width is evenly arranged with respect to the main body width, and the projected area at the time of simple storage can be efficiently reduced to reduce the storage capacity.

Further, it is not necessary to form the front cover and the first holding portion on the bottom surface of the main body, which are large-sized parts and exclusive parts restricted by the design, thereby simplifying the mold construction of the front cover and the main body. And it can be provided at low cost.

Further, since the groove-shaped first holding portion is not formed in the front cover or the main body, the design of the main body is not spoiled.

Further, since the casters can be commonly used even if the design of the main body is changed, a simple storage configuration can be developed easily and inexpensively in various main body designs, and the first holding member which engages with the locking portion can be used. By arranging the parts on caster covers that can be easily replaced, even if the first holding part is damaged, it is only necessary to replace the casters, and repair can be performed easily and inexpensively. -Since the cover is rotatable with respect to the main body, the displacement of the caster cover absorbs the force on the holding part such as the hose or below the holding part such as the floor nozzle in the simple storage state. Accordingly, it is possible to prevent the first holding portion from being damaged, and the effect is very large.

According to the second aspect of the present invention, the locking portion is formed by a concave portion that opens downward, while the first holding portion is formed by a convex portion that protrudes forward, so that cleaning is performed during cleaning. When the main body is moved, the convex portion of the first holding portion functions as a sled, so that mobility on a floor surface having a convex portion such as a sill can be improved.

In the invention according to claim 3 of the present invention, the locking portion is formed by a convex portion projecting downward, while the first holding portion is formed by a concave portion opened forward, so that the strength of the locking portion is improved. As a result, the convex portion of the locking portion is inserted into the concave portion of the first holding portion, and the insertability of the locking portion into the holding portion can be improved.

According to a fourth aspect of the present invention, the caster is provided by providing at least one of the caster cover and the bottom surface of the main body for holding the both side surfaces of the locking portion. The locking portion is held together with the first holding portion of the cover, and the side surface of the extension tube is held even when the caster cover rotates, preventing the locking portion from coming off from the holding portion. This is to improve the stability during simple storage.

According to a fifth aspect of the present invention, the one end of the lid for opening and closing the concave portion of the first holding portion is pivotally supported at the entrance of the concave portion, so that the dust is accumulated in the concave portion of the holding portion. This prevents the problem that the concave portion of the holding portion gets caught on a sill or the like when the main body is moved.

In the invention according to claim 6 of the present invention, a stopper connected to the lid is provided, and an engaging portion which engages with the stopper when the lid rotates is provided on the bottom surface of the main body. Thus, the same operation as the invention according to claim 5 is obtained, and the stopper is engaged with the engaging portion formed on the bottom surface of the main body by inserting the locking portion into the holding portion, so that the caster cover is formed. Is fixed to the main body and does not rotate, so that the stability during simple storage can be easily and reliably improved.

According to a seventh aspect of the present invention, a small roller is rotatably supported at the upper end of the concave portion of the first holding portion on the side where the extension pipe is mounted, so that the small holding member can be easily stored. The stop portion comes into contact with the small roller at the entrance of the holding portion, and the small roller rotates, whereby the locking portion can be easily inserted into and held in the holding portion.

Further, when the vehicle climbs over a step such as a sill during cleaning or the like, the step is first hit by a small roller at the tip of the holding portion, and then the caster cover bottom surface and the caster roller.
In this order, the vehicle is going over the sill, and the ability to climb over the step such as the sill is improved, and at the same time, the recess of the first holding portion of the caster cover covers the step such as the sill, and collides with the step surface. It can prevent damage.

According to the eighth aspect of the present invention, since the belt is stretched between the small roller and the caster roller, the belt comes into contact with the step when the driver crosses the step during cleaning or the like. , And can be prevented from hitting or damaging a step.

According to the ninth aspect of the present invention, a belt is crossed between a small roller and a caster roller so as to be stretched, so that the locking portion is inserted into the holding portion. The small roller rotates in a direction to guide the locking portion into the holding portion, and the rotation is transmitted to the caster roller via the belt, and the caster roller is directed in a direction to guide the extension pipe downward. -Rotates to facilitate easy storage.

According to the tenth aspect of the present invention, since the extension tube is provided with the third holding portion for holding both side surfaces of the caster roller, the extension tube is engaged with the holding portion during simple storage. The two-point support of the fitting with the stop portion and the fitting with the caster roller and the third holding portion formed on the extension tube improves the stability during simple storage.

According to an eleventh aspect of the present invention, a front cover is provided to cover a front portion of the dust collecting chamber, and a caster cover is provided at a portion of the front cover facing the caster cover. By providing the fourth holding portion communicating with the first holding portion, the locking portion is held together with the first holding portion of the caster cover. To prevent the locking part from coming off from the holding part, improve the stability during simple storage, and position the caster under the front cover to hold the locking part of the extension pipe. Thus, simple storage can be reliably performed without changing the position of the caster, the main body can be reduced in size, and simple storage can be performed.

[0028]

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

Reference numeral 21 denotes a vacuum cleaner main body (hereinafter, referred to as a main body) having a dust collection chamber 22 formed at the front side and a dust suction motor 23 at the rear. Reference numeral 24 denotes a front cover provided in front of the dust collecting chamber 22 and having an air inlet 25.
The main body 21 is formed of a separate member. 26 is the body 21
A caster 29 composed of caster rollers 27 and caster covers 28 for moving the main body provided on the lower surface of the front part of the vehicle, and 29 for moving the main body similarly provided on the rear left and right side surfaces of the main body 21. It is a large roller. 30 is a dust collecting chamber 22
Is a dust collection chamber cover that covers the upper part of the main body, and 31 is a handle for carrying the main body.

A hose 32 is fixed to the intake port 25 of the front cover 24 via a connecting pipe 33, and the hose 3
An extension tube 34 is fitted to the end of the second, and a floor nozzle 35 is inserted and connected to the end of the extension tube 34. A substantially L-shaped locking portion 36 is attached to a part of the extension tube 34, and a first holding portion that holds the locking portion 36 in front of the caster 26 opposite to the locking portion 36. A part 37 is provided. The first holding portion 37 partially cuts out a front surface of the caster cover 28, and a plate-like tip portion 36 a of the locking portion 36.
Is inserted through the notch 28a into a space 37a formed between the caster cover 28 and the bottom surface of the main body 21 and is held.

The operation of the above configuration is as follows.
That is, the first holding portion 37 is inserted and held by the locking portion 36, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored at substantially the center of the main body 21, that is, at the position where the casters 26 are provided, and the first holding portion 37 is formed on the front cover 24, the bottom surface of the main body 21, and the like. No need for front cover
The mold configuration of the body 24 and the body 21 is simplified, and
It can be provided at low cost.

Further, since it is not necessary to form the groove-shaped holding portion 19 as in the conventional example on the front cover 24 or the like, the design of the main body is not impaired.

Further, by holding the extension tube 34 on the caster 26 disposed substantially at the center in front of the bottom of the main body 21, the floor nozzle 35 does not protrude beyond the width of the main body 21 during simple storage. As shown in FIG.
What was at the position shown by the dashed line becomes the position shown by the solid line, the projection area is reduced, the storage space for simple storage can be reduced, and the storage performance can be improved.

Further, since the caster 26 is rotatable with respect to the main body 21, the caster 26 can be moved upward in the simple storage state above the first holding portion such as the hose 32 or below the first holding portion such as the floor nozzle 35. By absorbing the force by the displacement of the casters 26, the damage of the first holding portion 37 can be prevented.

(Embodiment 2) Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A first holding portion 37 is formed so as to protrude forward of the caster cover 28, and an engaging portion 36 on a box which engages with the outer periphery of the first holding portion 37 is attached to the extension tube 34. I'm wearing

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected. Also,
If the projecting shape of the first holding portion 37 of the caster cover 28 is configured such that the tip is inclined toward the front bottom side of the main body 21,
When the main body 21 is moved, it serves as a sled, which makes it easy to cross over a sill and the like, and the first locking portion 36 is formed on a box, so that the rigidity of the locking portion 36 is improved and the first locking portion 36 is hardly damaged. .

Embodiment 3 Next, a third embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A first holding portion 38 is formed in which the locking portion 36 has a convex shape protruding downward, and the front surface of the caster cover 28 has a concave shape receiving the convex shape of the locking portion 36. ing.

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected. Also,
Since the insertion into the locking portion 36 of the first holding portion 37 becomes a convex insertion into the concave portion, the insertability can be improved, and the caster cover 28 can be formed in the same size as the conventional one. The present housing mode can be easily implemented in the conventional main body 21, and the commonality is enhanced. Also, the caster cover 28 of the present invention can be used in the same main body 21 to determine whether or not the present housing mode exists. The configuration can be made easily, and the product can be easily developed.

Embodiment 4 Next, a fourth embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A second holding portion 38 for holding the side surface of the locking portion 36 at the time of simple storage is formed on the bottom surface of the main body 21. Preferably, a groove is formed along the longitudinal direction of the locking portion 36 so that both sides of the locking portion 36 can be held on the bottom surface of the main body 21, and a second holding portion 38 is formed on both side walls of the groove. I do.

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected. Also,
When the locking portion 36 is inserted into the first holding portion 37, the locking portion 36 is positioned by the second holding portion 38 formed on the bottom surface of the main body 21 before being inserted into the holding portion 37, thereby improving insertability. And the second holding portion 37 is
By holding both sides of 6, the extension tube 34 can be prevented from tilting or falling down during simple storage, and stability can be improved.

In this embodiment, a groove is formed in the bottom surface of the main body 21 to hold both sides of the locking portion 36.
The caster cover 28 may be formed with a groove capable of holding both side surfaces of the locking portion.

(Embodiment 5) Next, a fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A lid 39 is rotatably mounted on a pivot shaft 40 having one end formed at one end so as to cover the opening of the first holding portion 37. The lid 39 is a spring. 4
1 is urged to cover the entrance of the opening of the first holding portion 37.

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected. When the locking portion 36 is inserted into the first holding portion 37, the locking portion 3
6, the lid 39 is rotated, and the first holding portion 37 is opened and can be inserted.

When the simple storage is not performed, the cover 39 is not used.
Since the opening of the first holding portion 37 is closed by this, it is possible to prevent dust from accumulating in the first holding portion 37 and to make the first holding portion 37 hygienic.
The problem that the opening of 7 is caught on the threshold or the like can be prevented, and the operability can be improved.

Further, the opening of the first holding portion 37 does not appear in the appearance, so that the appearance can be improved.

Embodiment 6 Next, a sixth embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A stopper 42 connected to the cover 39 so as to cover the opening of the first holding portion 38
Is pivotally attached to the bottom surface side of the main body 21 around the center of rotation, and the stopper 42 on the bottom surface of the main body 21 is
An engaging portion 43 is formed at a relative position when the.

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected.

When the locking portion 36 is inserted into the first holding portion 37, the lid 39 is rotated by the locking portion 36 to open the first holding portion 37, and the stopper 42 is also attached to the main body 21. Similarly, the caster cover 28 rotates to the bottom side and engages with the engaging portion 43 on the bottom surface of the main body 21 to prevent the caster cover 28 from rotating. It can improve the performance.

(Embodiment 7) Next, a seventh embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A small rotatable roller 44 is disposed at the end of the first holding portion 37 on the side where the extension tube 34 is attached.

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected. When the locking portion 36 is inserted into the first holding portion 37, the small roller 44 provided at the end of the first holding portion 37 on the side of the extension pipe is in contact with the locking portion 36 and rotates. Thereby, the insertability can be improved. When removing, it goes without saying that the small roller 44 rotates in the opposite direction to facilitate removal.

Further, when the main roller 21 is moved, the small roller 44 first hits a step such as a threshold, so that it is possible to improve over the step.

Embodiment 8 Next, an eighth embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A belt 45 made of a soft material is stretched and connected to a small roller 44 and a caster roller 27 provided at the end of the first holding portion 37 on the extension tube 34 side. .

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected.

Further, when going over a step such as a sill during cleaning or the like, the belt 45 of the first holding portion 37 first hits the sill, so that the sill is prevented from being scratched and not caught. Since the rotating surface of the belt 45 is connected to the small roller 44 and the caster roller 27, the small roller 44 and the caster roller 27 are connected.
Assistance is provided to the vehicle and it is easy to get over the threshold.

(Embodiment 9) Next, a ninth embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A small roller 44 provided at the end of the first holding portion 37 on the extension tube 34 side intersects a belt 45 which is connected to the caster roller 27 by being stretched.

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected. At this time, the small roller 44 is rotated inward by the locking portion 36,
The caster roller 27 transmitted from the belt 45 crossing the rotation rotates downward, and the rotation of the caster roller 27 guides the extension pipe 34 to the lower side. By performing the reverse operation, the detachability of the simple storage can be improved.

Embodiment 10 Next, a tenth embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A third holding portion 46 for holding a side surface of the caster roller 27 at a portion of the extension tube 34 which is below the first holding portion 37 and in contact with the caster roller 27.
Is composed.

The operation of the above configuration is as follows.
That is, when the first holding portion 37 is inserted into and held by the locking portion 36, the third holding portion 46 formed on the extension tube 34 and the caster roller 27 are engaged. The rotation of the roller 27 and the smooth movement of the extension tube 34 improve the insertability of the first holding portion 37 and the locking portion 36.

In addition, the first holding portion 37 and the locking portion 36 are engaged with each other to form a two-point holding structure, so that the stability during simple storage can be further improved.

Embodiment 11 Next, an eleventh embodiment of the present invention will be described with reference to FIG. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The fourth holding portion 47 for holding the locking portion 36 at the time of simple storage is connected to the front cover 24 above the caster 26.
It is composed.

The operation of the above configuration is as follows.
That is, the locking portion 36 is inserted and held in the first holding portion 37, and the hose 32, the extension pipe 34, the floor nozzle 3
5 can be easily stored while connected.

The first holding portion 37 is provided with a locking portion 36.
When inserting the front cover above the caster 26
The locking portion 36 is positioned by the fourth holding portion 47 formed on the first holding portion 37 before being inserted into the first holding portion 37, so that the insertability is improved, and the fourth holding portion 47 is fixed to the locking portion 3.
6, the extension pipe 3 can be easily stored.
4 can be prevented from inclining, falling down, etc., and the stability can be improved. In addition, the caster can be located at the lower part of the front cover 24 to hold the engaging portion 36 of the extension pipe, and the position of the caster 26 can be changed. The simple storage can be reliably performed without any need, the main body 21 can be downsized, and the simple storage can be performed.

[0073]

As is apparent from the above embodiment, according to the first aspect of the present invention, a main body having a built-in dust collecting chamber at the front and a motor at the rear, and A caster formed of a caster roller and a caster cover rotatably provided on a lower surface, and a roller rotatably supported on both side surfaces of the main body for moving the main body; A hose connected to a suction port communicating with the dust collecting chamber, and an extension tube connected to the hose, and a locking portion provided on the extension tube;
The first holding portion for engaging the locking portion from the front of the main body is provided on the caster cover, so that the locking portion provided on the long pipe is provided on the first holding portion provided on the caster cover. The hose can be easily stored with the hose, extension tube, and floor nozzle attached to the main body at the approximate center of the main body. The projection area can be efficiently reduced to reduce the storage area.

Further, in order to easily store the hose with the hose, extension tube and floor nozzle connected to the main body, a large part and a dedicated part restricted by design, such as a front cover and a holding part for the bottom surface of the main body, are provided. This eliminates the need for formation, and simplifies the mold configuration of the front cover and the main body and can be provided at low cost.

Further, since the groove-shaped holding portion is not formed on the front cover or the main body, the main body design is not spoiled.

Even if the design of the main body is changed, the caster can be used in common, so that a simple storage configuration can be easily and inexpensively applied to various main body designs, and even if the holding portion is damaged, the caster can be used. Can be easily and inexpensively repaired, and the effect is very large.

According to the second aspect of the present invention, the locking portion is formed by a concave portion that opens downward, while the first holding portion is formed by a convex portion that protrudes forward, so that cleaning is performed. When the main body moves inside, the convex portion functions as a sled, and the mobility on a floor surface having a convex portion such as a sill can be improved.

According to the third aspect of the present invention, the locking portion is formed by a convex portion protruding downward, while the first holding portion is formed by a concave portion opened forward, so that the locking portion is formed. By improving the strength of the portion and inserting the convex portion into the concave portion, it is possible to improve the insertability of the locking portion into the holding portion.

According to the fourth aspect of the present invention, the second holding portion for holding both side surfaces of the locking portion is provided on at least one of the caster cover and the bottom surface of the main body. Even if the caster cover rotates, the side surface of the extension tube is held, preventing the locking portion from coming off the holding portion, and improving the stability during simple storage.

According to the fifth aspect of the present invention, since one end of the lid for opening and closing the concave portion of the first holding portion is pivotally supported at the entrance of the concave portion, dust is formed in the concave portion of the holding portion. In addition to preventing accumulation and hygiene, it is possible to prevent the recess of the holding portion from being caught on a sill or the like when the main body is moved.

According to the invention of claim 6 of the present invention, the stopper connected to the lid is provided, and the engaging portion which engages with the stopper when the lid rotates is provided on the bottom surface of the main body. With the provision, the same operation as the invention according to claim 5 is obtained, and by inserting the locking portion into the holding portion, the stopper engages with the engaging portion formed on the bottom surface of the main body,
The caster cover is fixed to the main body and does not rotate, so that the stability during easy storage can be improved easily and reliably.

According to the seventh aspect of the present invention, the small roller is rotatably supported at the upper end of the concave portion of the first holding portion on the side where the extension pipe is mounted, so that it can be easily stored. At this time, the locking portion comes into contact with the small roller at the entrance of the holding portion, and the small roller rotates, so that the locking portion can be easily inserted into and held in the holding portion.

Further, when stepping over a sill or the like during cleaning or the like, a small roller at the tip of the holding portion first hits the step, and then the caster cover bottom surface and the caster roller As a result, the vehicle goes over the threshold, and it is possible to prevent the bumper from hitting the concave portion of the first holding portion of the caster cover and hitting or damaging the step surface.

According to the eighth aspect of the present invention, since the belt is stretched between the small roller and the caster roller, the belt hits the step at the time of stepping over such as during cleaning. Because of the contact, it is possible to prevent the bump from hitting or damaging the step.

According to the ninth aspect of the present invention, since the belt is stretched across the small roller and the caster roller so as to intersect, the locking portion is inserted into the holding portion. At this time, the small roller rotates in the direction of guiding the locking portion into the holding portion, and the rotation is transmitted to the caster roller via the belt, and is rotated in the direction of guiding the extension pipe downward, thereby simplifying the operation. It is easy to store.

According to the tenth aspect of the present invention,
By providing the third holding portion for holding the both side surfaces of the caster roller on the extension tube, the extension tube can be fitted into the holding portion and the locking portion, and the caster roller can be connected to each other during simple storage. The two-point support of the fitting with the third holding portion formed on the extension tube is provided, and the stability at the time of simple storage is improved.

According to the eleventh aspect of the present invention,
A front cover for covering the front portion of the dust collecting chamber is provided, and a fourth holding portion communicating with a first holding portion provided on the caster cover is provided at a portion of the front cover facing the caster cover. With this arrangement, the locking portion is held together with the first holding portion of the caster cover. Even when the caster cover rotates, the side surface of the extension tube is held and the locking portion comes off from the holding portion. To improve the stability during simple storage and position the caster at the lower part of the front cover to hold the locking portion of the extension pipe.
The simple storage can be securely performed without changing the position of the main body, the main body can be reduced in size, and the simple storage can be performed.

As described above, the present invention provides a very useful effect in practical use.

[Brief description of the drawings]

FIG. 1 is a side view of a vacuum cleaner in a storage state according to a first embodiment of the present invention.

FIG. 2 is a plan view when the electric vacuum cleaner is stored.

FIG. 3 is a side view of a main part with a part cut away when the vacuum cleaner is stored.

FIG. 4 is a side view of a main part of a vacuum cleaner according to a second embodiment of the present invention, which is partially cut away when the vacuum cleaner is stored.

FIG. 5 is a side view of a main part of a vacuum cleaner according to a third embodiment of the present invention, which is partially cut away when the vacuum cleaner is stored.

FIG. 6 is a plan view of a main part of a vacuum cleaner according to a fourth embodiment of the present invention, which is partially cut away when the vacuum cleaner is stored.

FIG. 7 is a sectional view of a main part of a vacuum cleaner showing a fifth embodiment of the present invention.

FIG. 8 is a sectional view of a main part of a vacuum cleaner showing a sixth embodiment of the present invention.

FIG. 9 is a side view of a main part of a vacuum cleaner according to a seventh embodiment of the present invention, with a portion cut away.

FIG. 10 is a side view of a main part of a vacuum cleaner according to an eighth embodiment of the present invention, with a portion cut away.

FIG. 11 is a side view of a main part of a vacuum cleaner according to a ninth embodiment of the present invention, with a portion cut away.

FIG. 12 (a) is a side view of a main part of a vacuum cleaner showing an eleventh embodiment of the present invention, with a part cut away. (B) AA sectional view of FIG.

FIG. 13 is a side view of a main part of a vacuum cleaner according to an eleventh embodiment of the present invention, with a portion cut away.

FIG. 14 is a side view of the vacuum cleaner in a storage state showing a conventional example.

FIG. 15 is a bottom view of the vacuum cleaner at the time of storage showing the conventional example.

FIG. 16A is a perspective view of a vacuum cleaner at the time of storage, showing another conventional example. FIG. 16B is an enlarged perspective view of a portion B in FIG.

[Explanation of symbols]

 Reference Signs List 21 main body 22 dust collection chamber 23 motor 26 caster 27 caster roller 28 caster cover 29 large roller 32 hose 34 extension tube 35 floor nozzle 36 locking portion 37 first Holding part 38 Second holding part 39 Lid 42 Stopper 43 Engaging part 44 Small roller 45 Belt 46 Third holding part 47 Fourth holding part

Claims (11)

[Claims] 1. A main body having a built-in dust collecting chamber in the front and a motor in the rear, a caster roller and a caster cover rotatably provided on the lower surface of the main body. A caster, a roller rotatably supported on both sides of the main body for moving the main body, a hose connected to a suction port communicating with the dust collecting chamber, and a connection to the hose. An electric vacuum cleaner comprising: an extension pipe to be provided; a locking portion provided on the extension tube; and a first holding portion for engaging the locking portion from the front of the main body, disposed on the caster cover. 2. The locking portion is formed by a concave portion opened downward,
The vacuum cleaner according to claim 1, wherein the first holding portion is formed by a convex portion protruding forward. 3. The locking part is formed by a convex part protruding downward,
2. The vacuum cleaner according to claim 1, wherein the first holding portion is formed by a concave portion opened forward. 4. The electric cleaning apparatus according to claim 1, wherein the second holding portion for holding both side surfaces of the locking portion is provided at least on one of the caster cover and the bottom surface of the main body. Machine. 5. The vacuum cleaner according to claim 3, wherein one end of a lid for opening and closing the concave portion of the first holding portion is pivotally supported at an entrance of the concave portion. 6. The vacuum cleaner according to claim 5, wherein a stopper connected to the lid is provided, and an engagement portion that engages with the stopper when the lid rotates is provided on a bottom surface of the main body. 7. A small roller is rotatably supported at the upper end of the concave portion of the first holding portion on the extension pipe mounting side.
The vacuum cleaner according to claim 1. 8. The vacuum cleaner according to claim 7, wherein a belt is stretched between the small roller and the caster roller. 9. The vacuum cleaner according to claim 8, wherein the belt is stretched across the belt between the small roller and the caster roller. 10. The vacuum cleaner according to claim 1, wherein a third holding portion for holding both side surfaces of the caster roller is provided on the extension tube. 11. A front cover for covering a front portion of the dust collecting chamber, wherein a portion of the front cover facing the caster cover communicates with a first holding portion provided on the caster cover. The vacuum cleaner according to any one of claims 1 to 10, further comprising: a holding portion (4).