JPH05253115A - Vacuum cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevents damage to the main body, floor nozzle, etc. when holding the extension tube in a configuration that stores the attachment with the hose, extension tube, etc. connected to the vacuum cleaner. It is an object of the present invention to provide an electric vacuum cleaner that prevents rattling of an extension pipe during storage and improves usability. A holding portion 35 for holding the extension pipe 31 is formed above the caster roller 25 attached to the lower surface of the electric vacuum cleaner body 21, and the extended pipe 31 has a locked portion 35.
A holding portion 33 having a holding portion locking portion 34 that engages with the holding portion 33 is provided, and the extension pipe 31 is fixed to the caster roller 2 during storage.
It is configured so as to abut with 5.

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 and floor nozzles are stored while being connected to a vacuum cleaner body.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner of this type has been developed by Shokai 6
As disclosed in Japanese Laid-Open Patent Application No. 3-39355, it is common that the holder is fixed to the main body by a holder attached to the extension pipe and is housed in the main body while the attachment is connected.

A description will be given below with reference to FIGS. 7 and 8. Reference numeral 1 denotes an electric vacuum cleaner main body (hereinafter referred to as a main body) having a dust collection chamber 2 formed on the front side and a mechanism chamber 5 on the rear side of which a dust suction motor 3 and a cord winding device 4 are installed in parallel. Reference numeral 6 denotes a front cover which is provided in front of the dust collection chamber 2 and has an intake port 7, and is constituted by a member different from the main body 1. Reference numeral 8 is a caster roller provided on the lower surface of the main body 1, and 9 is a roller provided on the rear left and right of the main body 1. Reference numeral 10 is a handle composed of a lid 11 for covering the upper part of the dust collecting chamber and a front cover 6. A hose 12 is fixed to the intake port 7 of the front cover 6 via a connection pipe 13, and the hose 1
An extension pipe 14 is fitted to the tip of 2, and a floor nozzle 15 is inserted and joined to the tip thereof. A holder 16 is attached to the extension tube 14, and a groove-shaped holder 18 is provided on the front cover 6 so as to face a holder locking portion 17 formed integrally with the holder 16. There is.

[0004]

However, in the above structure, when the extension pipe 14 is attached to the main body 1, the floor nozzle 15 attached to the tip of the extension pipe 14 hits the lower surface of the front cover 6 or the main body 1. It will damage both sides.
Further, since the attachment portion between the main body 1 and the extension tube 14 is a one-point support in which the holder locking portion 17 of the holder 16 is locked to the holding portion 18, it is easily rattable and unstable, and the main body 1 and the floor are not supported. Nozzle 15 hits both sides, and the extension tube 14 is unstable and easily dislodged when it is carried in a housed state. Further, in recent years, the main part of the hose 12 has a built-in suction force control component of the main body 1 and the like, and the end part has become very heavy. There is a problem in that the holder is easily tilted, and the holder locking portion 17 of the holder 15 and the holding portion 18 of the front cover 6 are subject to concentrated stress and are easily broken.

The present invention solves such a problem and does not damage the main body and the floor nozzle when storing without increasing the number of parts, and rattles such as an extension pipe in the stored state. It is an object of the present invention to provide an electric vacuum cleaner that prevents sticking to improve usability and prevents concentrated stress from being applied to the holder locking portion 17 and the holding portion to improve durability.

[0006]

In order to solve the above problems, the first technical means of the vacuum cleaner of the present invention is a holding portion for holding an extension pipe formed in front of the caster roller mounting portion of the main body, The extension pipe is provided with a holder locking portion of a holder that engages with the holding portion, and the extension pipe is held by the main body so as to abut the caster roller. The contact surface is formed into a flat surface.

The second technical means is configured such that the caster roller is engaged with the recess formed in the surface of the extension tube which comes into contact with the caster roller.

A third technical means is constructed such that a convex portion formed on a surface of the extension tube which comes into contact with the caster roller and a concave portion formed on the surface of the caster roller are engaged with each other.

In a fourth technical means, a conductive wire for supplying electric power to a floor nozzle or the like is built in the extension tube, and the conductive wire is arranged at both ends of the surface of the extension tube that contacts the caster roller. A recess is formed in the center.

[0010]

The operation of the above configuration is as follows.

According to the first technical means, a holding portion for locking the holder locking portion of the extension tube to hold the extension tube is provided so that the extension tube abuts the caster roller in the front center of the main body. Moreover, since the contact surface of the extension tube with the caster roller is formed to be substantially flat, the sense of stability in the stored state is increased. Further, according to the second technical means, the recess formed in the extension pipe serves as a guide for engaging the caster roller to hold the extension pipe, and at the time of storage, the extension pipe is also held in the recess of the caster roller for two-point support. It will be possible. Further, according to the third technical means, it is possible to support at two points by engaging the convex portion formed on the extension tube and the concave portion formed on the caster roller. Further, according to the fourth technical means, conductive wires for supplying power to a floor nozzle or the like are provided at both ends of the extension tube on the caster roller side, and a recess is formed substantially in the center thereof, whereby the caster roller is formed. Therefore, the recess that engages with the extension pipe can be formed without increasing the cross-sectional area of the extension pipe.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An electric vacuum cleaner according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

(Embodiment 1) In the first technical means, as shown in FIGS. 1 to 3, reference numeral 21 designates an upward opening dust collecting chamber 22 on the front side, and a motor 23 for sucking dust on the rear side. The main body 21 is equipped with a moving roller 24 on its rear side surface and a caster roller 25 on its front bottom surface. Reference numeral 26 is a front cover having a connection port 28 for connecting the hose 27 and integrally fixed to the main body 21 by screwing or the like. 29 is a lid that covers the upper opening of the dust collection chamber 22 and is rotatably attached to the main body 21. The dust collection bag 30 is detachably disposed in the dust collection chamber 22.
It is used by opening and closing when attaching and detaching. The connection port 28 of the front cover 26 has a hose 27, an extension pipe 31, a floor nozzle 32.
Are connected to form a dust ventilation path. Extension pipe 31
A holder 33 is attached to the front cover 26, and a groove-shaped holding portion 35 is provided on the front cover 26 in front of the caster roller 25 so as to face a holder locking portion 34 formed integrally with the holder 33. It is provided. The extension tube 31 is configured to come into contact with the caster roller 25 when the holder locking portion 34 is attached to the holding portion 35. Further, the surface of the extension pipe 31 that contacts the caster roller 25 is formed into a substantially flat surface.

The operation of the above configuration is as follows. After the user has finished cleaning, hose 27 and extension tube 3
In order to store the unit 1 and the floor nozzle 32 in the main body 21 in a connected state, after the main body 21 is erected, the holder locking portion 34 of the holder 33 fixed to the extension pipe 31 is attached to the holding portion 35 provided on the front cover 26. Plug in.

At this time, the connecting portion 32a of the floor nozzle 32 and the extension pipe 3 are inserted before the holder locking portion 34 is inserted into the holding portion 35.
1 is guided by contacting the caster roller 25. Further, as shown in FIG. 2, in general, one caster roller 25 is generally arranged in the front center of the main body 21, so that the extension pipe 31 and the like can be held substantially in the center of the main body 21. Since the surface of 31 that contacts the caster roller is formed into a substantially flat surface, a sense of stability in the stored state increases.

(Embodiment 2) In the second technical means,
As shown in the fourth example, a concave portion 36 is formed on the caster roller 25 side of the extension pipe 31 so as to be engaged with the width of the caster roller 25.

As a result, when the extension tube 31 is held in the main body 21, the extension tube 31 is held by the engagement between the holder locking portion 34 and the locked portion 35, the recess 36 and the caster roller 2.
2 point support of engagement with 5 and extension pipe 3 when stored
The rattling of 1 is prevented, and the holder locking portion 34 and the holding portion 35.
It is possible to prevent the concentrated stress from being applied only to the holder locking portion 34.
It is intended to prevent the holding portion 35 from being damaged.

Also, when the main body 21 is carried in the housed state, the extension tube 31 is prevented from rattling, is not tilted, and is balanced when carried, which is easy to carry and has high usability.

(Third Embodiment) In the third technical means,
As shown in FIG. 5, a recess 37 is formed in the caster roller 25, and a projection 38 is provided on the extension pipe 31 so as to engage with the recess 37. Utilizing this recess 37, the extension pipe 3
It is to guide and hold 1.

As a result, the extension pipe 31 can be held by two-point support, the structure of the extension pipe 31 is not complicated, and the extension pipe 31 does not become large, and the weight can be reduced.

(Fourth Embodiment) In the fourth technical means,
As shown in FIG. 6, conductive wires 39 for supplying power to the floor nozzle 32 are provided at both ends of the extension pipe 31 on the caster roller 25 side, and a recess 36 is formed in the substantially central portion thereof to engage with the caster roller 25. It is configured to match.

As a result, when the conductive wire 39 is built into the extension pipe 31, the portions formed at both ends of the recess 36 are utilized, and the conductor wire 39 can be made compact without being oversized.

[0023]

As is apparent from the above description of the embodiments, the electric vacuum cleaner of the present invention has the following great effects.

According to the first technical means, the holding portion for holding the extension pipe is formed in front of the caster roller mounting portion of the main body, and the extension pipe has the holder locking portion for engaging with the holding portion. And the extension pipe is held in the main body so as to contact the caster roller, so that the floor nozzle or the extension pipe hits the caster roller when the extension pipe is held in the main body. It prevents the main body from being scratched. Further, the caster roller serves as a guide for the floor nozzle and the extension pipe and can be smoothly held by the main body. Furthermore, the caster roller is generally disposed in the substantially central portion of the front of the main body, and therefore the extension tube is held in the substantially central portion of the main body, which provides a stable feeling during storage and improves usability. It can be improved.

According to the second technical means, the extension pipe is supported at two points by forming the recess on the surface of the extension pipe which comes into contact with the caster roller, and the recess is engaged with the caster roller. This prevents concentrated stress from being applied to the holder locking portion and the holding portion, and prevents damage. In addition, rattling of the extension pipe is prevented, and when the main body is carried in a housed state, it is stable and easy to carry, and usability is improved.

According to the third technical means, by forming a concave portion on the caster roller and forming a convex portion on the extension pipe so as to engage with the concave portion, the structure of the extension pipe is not complicated and large. The extension tube can be supported at two points without shaping.

Therefore, the extension pipe can be made larger and the weight thereof can be reduced. According to the fourth technical means, conductive wires for supplying electric power to the floor nozzle and the like are provided at both ends of the extension tube on the caster roller side, and a recess is formed in substantially the center thereof to engage with the caster roller. As a result, even if a conductive wire is built in, it can be formed without increasing the cross-sectional area of the extension pipe, and the extension pipe can be supported at two points.

As described above, the present invention is practically used,
It has a very useful effect.

[Brief description of drawings]

FIG. 1 is a side view showing a cross section of a main part of a vacuum cleaner according to an embodiment of the present invention with a part of the extension tube accommodated therein being cut away.

FIG. 2 is a bottom view showing a main portion of the extension pipe accommodated therein.

FIG. 3 is a sectional view taken along the line AA in FIG. 2 showing a main part of the first embodiment.

FIG. 4 is a cross-sectional view taken along the line AA in FIG. 2 showing a main part of the second embodiment.

FIG. 5 is a cross-sectional view taken along line AA in FIG. 2 showing a main part of the third embodiment.

FIG. 6 is a sectional view taken along the line AA in FIG. 2 showing a main part of the fourth embodiment.

FIG. 7 is a side view showing a cross section of a main part of the conventional electric vacuum cleaner with a part of the extension tube accommodated therein being cut away.

FIG. 8 is a bottom view showing a main part of the extension pipe accommodated therein.

[Explanation of symbols]

 21 Main Body 22 Dust Collection Room 23 Motor 23a Mechanism Room 24 Roller 25 Caster Roller 27 Hose 31 Extension Tube 33 Holding Tool 34 Holding Tool Locking Section 35 Holding Section

Claims (5)

[Claims] 1. A dust collection chamber for collecting dust is formed in the front,
A main body having a mechanism room for storing a motor in the rear, a roller for moving to the main body, a rotating body made of caster rollers, a hose for carrying the sucked dust to the dust collecting chamber, and a ventilation path made of an extension pipe. The main body includes a holding portion for holding an extension pipe provided in front of the caster roller mounting portion, and a holder locking portion of a holder for engaging the extension pipe with the holding portion. And an electric vacuum cleaner that holds the extension tube on the main body so as to abut the caster roller. 2. The electric vacuum cleaner according to claim 1, wherein a surface of the extension tube that contacts the caster roller is a flat surface. 3. The caster roller engages with the recess formed in the contact surface of the caster roller of the extension tube.
Vacuum cleaner as described. 4. The electric vacuum cleaner according to claim 1, wherein the convex portion formed on the contact surface of the extension tube with the caster roller and the concave portion formed on the surface of the caster roller are engaged with each other. 5. A conductive wire for supplying power to a floor nozzle is built in the extension tube, and the conductive wire is provided at both ends of a contact surface of the extension tube with a caster roller, and is formed in a central portion thereof. The recessed portion and the caster roller are engaged with each other.
Or the electric vacuum cleaner described in 3.