JPH11137489A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner in which breakage of a hose can be prevented. SOLUTION: A flexible hose 1 to be connected to a suction port of a cleaner main body is composed of a hose member 3 on which a lead wire is wound, and a winding pitch of the lead wire close to a cleaner main body side end part or an extension pipe side end part in the hose member 3 is set smaller than a winding pitch at a center part in the hose member 3. Flexiblity of the hose 3 at the cleaner main body side end part or the extension pipe side end part is thus set larger, thereby breakage of the hose 3 can be prevented when the hose end part is sharply bent in the ease where a cleaner main body is pulled in other directions than an advancing direction, or in containing a cleaner on a stand.

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 an improvement in a hose thereof.

[0002]

2. Description of the Related Art Conventionally, a hose 50 of a vacuum cleaner has connecting members 52 and 53 connected to both ends of a flexible bellows-like hose 51, respectively, and is connected to a cleaner body 54 via a body side connecting member 53. When the cleaner is in use, as shown in FIG. 11, when the cleaner main body 54 is caught on a step such as a sill, the hose is pulled and the main body 54 is pulled.
A load is applied to the connection portion 55 between the hand side connection member 52 and the hose 51 and the overlapping portion 56 between the cleaner body 54 side connection member 53 and the hose 51, and if such operations are repeated, the hose may be damaged. is there.

When the user lifts the hose at hand, the hose is lowered, so that the vicinity of the connecting portion 55 between the connecting member 52 on the hose side and the hose 51 is sharply bent and the suction during cleaning is performed. When the suction tool is pulled toward the user in the fore-and-aft movement of the tool, the vicinity of the hand-side connection portion of the hose 51 is bent at a steeper angle, but as shown in FIG. 12 and FIG. The size of the cover 58 that covers the overlap 57 with the hose 52 and the overlap between the hose 51 and the connection member 52
Therefore, there is a problem that the hose 51 bends sharply around the end of the connecting member 52 as a fulcrum, and the vicinity of the hand side connecting portion of the hose becomes fatigued and easily broken.

In recent years, when the vacuum cleaner is stored,
As shown in FIG. 10, hold the cleaner body in an upright state,
A so-called stand storage is generally used to lock the hose and the extension pipe to the cleaner body while being connected, so that the vicinity of the connection portion 55 on the hand side of the hose 51 is held at a sharply bent state. However, there is a problem that this part is easily damaged.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has as its object to provide a vacuum cleaner capable of preventing breakage of a hose.

[0006]

SUMMARY OF THE INVENTION The present invention provides a cleaner body having a suction port formed in the front thereof, a flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end. A floor suction device attached to the other end of the extension pipe, and a portion near the cleaner body side end of the flexible hose is configured to be more easily bent than a central portion of the flexible hose. I do.

[0007] The present invention also provides a cleaner body having a suction port formed in the front thereof, a flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end. A floor suction device attached to the other end, wherein the flexible hose is configured to bend more near the end of the flexible pipe than at the center of the flexible hose.

Further, the present invention provides a cleaner body having a suction port formed in the front, a flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end. A control unit disposed at the other end of the hose to control the electric blower of the cleaner main body; and a floor suction tool attached to the other end of the extension pipe. A conductive wire for electrically connecting the main body and the control unit is spirally wound, and a winding pitch of the conductive wire in the vicinity of the cleaner body side end of the flexible hose is set at the center of the flexible hose. It is characterized in that the pitch is smaller than the winding pitch of the conductive wire in the portion.

The present invention also provides a cleaner body having a suction port formed in the front, a flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end. A control unit disposed at the other end of the hose for controlling the electric blower of the cleaner body, and a floor suction tool attached to the other end of the extension pipe, wherein the flexible hose includes:
The conductive wire for electrically connecting the cleaner body and the control unit is spirally wound, and the winding pitch of the conductive wire near the end on the extension pipe side of the flexible hose is adjusted by a flexible hose. It is characterized in that the pitch is smaller than the winding pitch of the conductive wires in the central portion.

Further, the present invention provides a cleaner body having a suction port formed in the front, a flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, A floor suction device attached to the other end side, wherein the flexible hose has an uneven portion formed in a spiral shape, and a pitch of the concave portion near the end of the flexible hose on the cleaner body side. Is smaller than the pitch of the concave portions at the center of the flexible hose.

The present invention also provides a cleaner body having a suction port formed in the front, a flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, A floor suction device attached to the other end side, wherein the flexible hose has an uneven portion formed in a spiral shape, and the pitch of the concave portion near the end of the flexible hose on the extension pipe side is reduced. The pitch of the concave portion at the center of the flexible hose is smaller than that of the concave portion.

Further, the present invention provides a cleaner body having a suction port formed in the front thereof, a flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, A floor suction device attached to the other end side, wherein the flexible hose has an uneven portion formed in a spiral shape, and a convex portion near the end of the flexible hose on the cleaner body side. The width is smaller than the width of the convex portion at the center of the flexible hose.

[0013] The present invention also provides a cleaner body having a suction port formed in the front thereof, a flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end. A floor suction device attached to the other end, wherein the flexible hose has a rugged portion formed in a spiral shape, and the width of the convex portion near the end of the flexible hose on the extension pipe side. Is made smaller than the width of the projection at the center of the flexible hose.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. Note that the configurations of the cleaner body, the extension pipe, the floor suction tool, and the like are the same as those in the related art shown in FIGS. 10 and 11, and a description thereof will be omitted.

Reference numeral 1 denotes a flexible hose having one end connected to the suction port of the cleaner body and the other end connected to an extension pipe (not shown). The flexible hose has a bellows shape in which a conductive wire such as a lead wire 2 is spirally wound. And a body-side connection member 6 and a hand-side connection member 8 (all described later) connected to both ends of the hose member 3. The hose member 3 is wound around the lead wire 2. It has a turned convex part 4 and a concave part 5 formed between adjacent convex parts 4.

The hose member 3 has the lead wire 2 wound spirally, but at both ends of the hose member 3, that is, in the vicinity of a connection portion to a body-side connection member 6 and a hand-side connection member 8, which will be described later. The winding pitch of the lead wire 2 is smaller than the winding pitch of the lead wire 2 at the center of the hose member 3, and both ends of the hose member 3 are formed to be more flexible than the center of the hose member 3. .

Reference numeral 6 denotes a main body-side connecting member attached to one end of the hose member 3, that is, the suction port side of the cleaner main body, and is detachably attached to the cleaner main body by a hook 7 provided on the main body-side connecting member 6. It is to be connected. The hose connection structure of the main body side connection member 6 is the same as the structure of the hand side connection member 8 described later.

Reference numeral 8 denotes a hand-side connecting member attached to the other end of the hose member 3. The hand-side connecting member 8 is a joint pipe 9 to which an extension pipe (not shown) is connected, and is rotatable with respect to the joint pipe 9. And a hose attachment tube 10 attached to the handpiece, and the hand side connection member 8 is used as a gripping part at the time of cleaning. A floor suction tool (both not shown) is connected to the proximal connection member 8 via an extension pipe.

Reference numeral 11 denotes a hose member 3 of the hose mounting pipe 10.
The hose member 3 is engaged with the protrusion 11 of the hose mounting pipe 10 by inserting the hose member 3 while twisting it along a spiral at a protrusion formed on the outer peripheral surface near the connection side end. It has become so.

Reference numeral 12 denotes a locking rib formed on the outer peripheral surface of the hose mounting pipe 10. A resin cover 13 is engaged with the locking rib 12, and the cover 13 The overlap with the member 3 is covered.

Reference numeral 14 denotes a switch cover which is screwed to the hand side connection member 8. A slide switch 15 is disposed in the space between the switch cover 14 and the hose mounting pipe 10, and an operation section of the slide switch 15 is provided. Opening 17 to expose 16
have. The slide switch 15 is electrically connected to an electric blower (not shown) in the main body of the cleaner by the lead wire 2 wound around the hose member 3, and the operation of the operation unit 16 drives the electric blower. It is controlled.

Thus, when cleaning, the hand-side connecting member 8
Hold the vicinity and slide the floor suction tool back and forth.

At this time, when the user grips the hand-side connecting member 8 and lifts it, the hose member 3 is lowered, so that the vicinity of the hand-side connecting member 8 of the hose member 3 is sharply bent from the vicinity of the end of the hose mounting pipe 10. However, since the end portion of the hose member 3 is configured to be more flexible than the center portion of the hose member 3,
A load is hardly applied to the vicinity of the hand connection member 8 of the hose member 3, and the hose member 3 is hardly damaged.

That is, as a means for increasing the flexibility of the end of the hose member 3, the winding pitch of the lead wire 2 is made small (narrow), so that the vicinity of the end of the hose member 3 is sharply bent. In the case of trying, as shown in FIG. 5, the protrusions 4 located on the inner diameter side of the bent hose member 3 come into contact with each other, and the interval between the protrusions 4 located on the outer diameter side of the hose member 3, ie, In order to prevent the opening of the hose member 3 from opening beyond a predetermined interval, it is possible to solve a problem that a load is applied to the concave portion 5 on the outer side of the bent hose member 3 and a crack is generated.

If the vicinity of the proximal connection member 8 of the hose member 3 is bent sharply from the vicinity of the end of the hose mounting pipe 10 by grasping and lifting the proximal connection member 8,
If the winding pitch of the lead wire 2 in the vicinity of the hand side connecting member 8 is the same as the conventional one, as shown in FIG. 10, when the hose member 51 is sharply bent, the convex portion 60 around which the lead wire is wound is used.
When the interposed concave portion 61 bends and the hose member 3 bends in the opposite direction, the portion expands, and it is considered that the concave portion 5 is fatigued and damaged by repeating such bending and stretching operations.

On the other hand, in the present embodiment, the winding pitch of the lead wire 2 in the vicinity of the proximal connection member 8 of the hose member 3 is smaller than the center of the hose member 3. Bending and stretching operations can be reduced, and therefore, the hose member 3 can be prevented from being fatigued and broken.

Further, the hand-side connecting member 8 of the hose member 3
By reducing the winding pitch of the lead wire 2 in the vicinity, the flexibility of the hose at the hand is improved, so that the workability can be improved, for example, when removing an extension pipe and attaching an attachment to clean a high place. Can be.

If the winding pitch of the lead wire 2 is reduced in the entire hose member 3, the entire hose member 3 can be prevented from being damaged. However, the weight of the hose member 3 increases, so that during the cleaning operation as described in the present application, It is optimal to reduce the winding pitch of the lead wires in the vicinity of the hand-side connection member 8 and the vicinity of the cleaner body-side connection member 6, which are most frequently bent at a sharp angle.

Also, the connecting portion between the hose member 3 and the main body side connecting member 6 has the same structure as the connecting portion between the hand side connecting member 8 and the hose member 3, so that the main body of the cleaner is used for a sill or the like. Even when the main body is pulled by pulling the hose in a direction other than the traveling direction of the cleaner main body while being stuck on the step, the end of the hose member 3 is configured to be more easily bent than the central part of the hose member 3. In addition, a load is hardly applied to the vicinity of the hand connection member 8 of the hose member 3, and the hose member 3 is hardly damaged.

As a means for increasing the flexibility of the end of the hose member 3, the winding pitch of the lead wire 2 is narrowed. As shown in FIG. 5, the protrusions 4 located on the inner diameter side of the bent hose member 3 substantially contact each other, and
In order to restrict the interval between the convex portions 4 located on the outer diameter side of the hose member 3, that is, the size of the concave portion 5 from opening beyond a predetermined interval, a load is applied to the concave portion 5 on the outer side of the bent hose member 3. Problems such as cracks can be solved.

In the above-described embodiment, the flexible hose is constituted by the hose member 3 around which the lead wire 2 is wound. However, as shown in FIGS. The hose 21 may be formed in a spiral shape.In this case, if the pitch of the concave portion 19 at the end of the flexible hose 21 is formed smaller than the pitch of the concave portion 19 at the center,
The same operation and effect as those of the above embodiment can be obtained.

Further, the flexible hose 21 is simply a hose in which the concave portion 19 and the convex portion 20 are formed in a spiral shape, and the width of the convex portion 20 at the end of the flexible hose 21 is changed to the convex portion 20 at the central portion.
May be formed smaller than the pitch.

[0033]

According to the first aspect of the present invention, since the end of the hose on the cleaner body side is more easily bent than the central part of the hose, the hose end has better flexibility and the hose is cleaned. The load is not easily applied to the portion near the machine body side, and it is possible to prevent the end of the hose from being damaged when the cleaner body is pulled in the direction outside the traveling direction or the hand is lifted upward during cleaning. .

According to the second aspect of the present invention, since the end portion of the hose on the extension pipe side is configured to be more flexible than the center portion of the hose, the flexibility of the hose end portion is improved and the vicinity of the extension pipe side of the hose is improved. It is hard to apply load to parts, during cleaning,
The end of the hose can be prevented from being damaged when the main body of the vacuum cleaner is pulled in a direction outside the traveling direction or when the hand is lifted upward.

Also, by increasing the flexibility near the end of the hose on the extension pipe side, the flexibility of the hose at the hand is improved, so that the workability can be improved when removing the extension pipe and cleaning a high place. Can be improved.

According to the third aspect of the present invention, the winding pitch of the conductive wires at the end of the hose on the cleaner body side is smaller than the winding pitch of the conductive wires at the center of the hose. The flexibility of the hose makes it easier to apply a load to the end of the hose on the side of the cleaner body, and prevents the end of the hose from being damaged when the cleaner body is pulled out of the traveling direction during cleaning. .

According to the fourth aspect of the present invention, the winding pitch of the conductive wire at the end of the hose on the extension pipe side is smaller than the winding pitch of the conductive wire at the center of the hose. Flexibility is improved, so that a load is less likely to be applied to the portion near the extension pipe side of the hose, and damage to the end of the hose when the hand is lifted upward during cleaning can be prevented.

Further, by reducing the winding pitch of the conductive wire in the vicinity of the end of the hose on the side of the extension pipe, the flexibility of the hose at the hand is improved. , Workability can be improved.

According to the fifth aspect of the present invention, since the pitch of the concave portion at the end of the hose on the cleaner body side is smaller than the pitch of the concave portion at the center of the hose, the flexibility of the hose end is improved. Thus, a load is hardly applied to the end of the hose on the side of the cleaner body, and the end of the hose can be prevented from being damaged when the cleaner body is pulled in a direction outside the traveling direction during cleaning.

According to the sixth aspect of the present invention, the pitch of the concave portion at the end of the hose on the side of the extended pipe is smaller than the pitch of the concave portion at the center of the hose, so that the flexibility of the hose end is improved. The load is not easily applied to the portion near the extension pipe side of the hose, and it is possible to prevent the end of the hose from being damaged when the hand is lifted upward during cleaning.

Further, by reducing the pitch of the concave portion in the vicinity of the end of the hose on the side of the extension pipe, the flexibility of the hose at the hand portion is improved. Can be improved.

According to the seventh aspect of the present invention, since the width of the protrusion at the end of the hose on the cleaner body side is smaller than the width of the protrusion at the center of the hose, the flexibility of the end of the hose is reduced. As a result, the load is less likely to be applied to the cleaner body side end of the hose, and the end of the hose can be prevented from being damaged when the cleaner body is pulled in a direction outside the traveling direction during cleaning.

According to the eighth aspect of the present invention, since the width of the convex portion at the end of the hose on the side of the extended pipe is smaller than the width of the convex portion at the center of the hose, the flexibility of the hose end is good. As a result, a load is hardly applied to the portion near the extension pipe side of the hose, and it is possible to prevent the end of the hose from being damaged when the hand is lifted upward during cleaning.

Further, by reducing the width of the convex portion near the end of the hose on the side of the extension pipe, the flexibility of the hose at the hand portion is improved. Performance can be improved.

[Brief description of the drawings]

FIG. 1 is an external view of a hose showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of the main part.

FIG. 3 is a sectional view of the main part.

FIG. 4 is an external view of the main part.

FIG. 5 is an enlarged view of a main part showing a state in which the hose is bent.

FIG. 6 is an enlarged view of a main part of a hose showing a second embodiment of the present invention.

FIG. 7 is a sectional view of the same.

FIG. 8 is an enlarged view of a main part of a hose showing a third embodiment of the present invention.

FIG. 9 is a sectional view of the same.

FIG. 10 is a perspective view showing a state in which a stand of a vacuum cleaner according to the related art is housed.

FIG. 11 is a perspective view showing the state of use.

FIG. 12 is a sectional view of the main part.

FIG. 13 is an enlarged view of a main part showing a state in which the hose is bent.

[Description of Signs] 2 Lead wire (conductive wire) 3 Hose member (flexible hose) 4 Convex portion 5 Concave portion 19 Concave portion 20 Convex portion 21 Hose member (flexible hose)

Claims (8)

[Claims] 1. A cleaner body having a suction port formed in the front thereof,
A flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end; and a floor suction tool attached to the other end of the extension pipe. An electric vacuum cleaner characterized in that the vicinity of the cleaner body side end is more easily bent than the center of the flexible hose. 2. A cleaner body having a suction port formed in front thereof,
A flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end; and a floor suction tool attached to the other end of the extension pipe. A vacuum cleaner characterized in that the vicinity of the end of the extension pipe is more flexible than the center of the flexible hose. 3. A cleaner body having a suction port formed in front thereof,
A flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, and a control unit disposed at the other end of the flexible hose for controlling the electric blower of the cleaner body. And a floor suction tool attached to the other end of the extension pipe, and a conductive wire that electrically connects the cleaner body and the control unit is spirally wound around the flexible hose. And a winding pitch of the conductive wire near the end of the flexible hose on the cleaner body side is smaller than a winding pitch of the conductive wire at the center of the flexible hose. . 4. A cleaner body having a suction port formed in the front thereof,
A flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, and a control unit disposed at the other end of the flexible hose for controlling the electric blower of the cleaner body. And a floor suction tool attached to the other end of the extension pipe, and a conductive wire that electrically connects the cleaner body and the control unit is spirally wound around the flexible hose. A vacuum cleaner wherein the winding pitch of the conductive wire near the end of the flexible hose on the extension pipe side is smaller than the winding pitch of the conductive wire at the center of the flexible hose. 5. A vacuum cleaner body having a suction port formed in the front thereof,
A flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, and a floor suction tool attached to the other end of the extension pipe, wherein the flexible hose is The concave and convex portions are formed in a spiral shape, and the pitch of the concave portions in the vicinity of the end of the flexible hose on the cleaner body side is smaller than the pitch of the concave portions in the central portion of the flexible hose. Vacuum cleaner to do. 6. A vacuum cleaner body having a suction port formed in the front thereof,
A flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, and a floor suction tool attached to the other end of the extension pipe, wherein the flexible hose is The concave and convex portions are formed in a spiral shape, and the pitch of the concave portions in the vicinity of the end of the flexible hose on the extension pipe side is smaller than the pitch of the concave portions in the central portion of the flexible hose. Vacuum cleaner. 7. A vacuum cleaner body having a suction port formed in the front thereof,
A flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, and a floor suction tool attached to the other end of the extension pipe, wherein the flexible hose is The convex and concave portions are formed in a spiral shape, and the width of the convex portion near the end of the flexible hose on the cleaner body side is smaller than the width of the convex portion at the central portion of the flexible hose. Characterized vacuum cleaner. 8. A cleaner body having a suction port formed in the front thereof,
A flexible hose having one end detachably connected to the suction port and an extension pipe connected to the other end, and a floor suction tool attached to the other end of the extension pipe, wherein the flexible hose is The convex and concave portions are formed in a spiral shape, and the width of the convex portion near the end on the extension pipe side of the flexible hose is smaller than the width of the convex portion at the central portion of the flexible hose. And vacuum cleaner.