JPH09206251A - Expansion pipe for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a work of detaching a coupling member from an inner pipe by providing an engaging claw for plunged into an engaging hole, a screw locking mechanism, etc., so as to constitute a mechanism for fitting the coupling member for coupling a power brush side to the inner pipe in a device for storing the inner pipe in an outer pipe in such a state as being freely taken in and out. SOLUTION: An expansion pipe is composed of an outer pipe connected to a vacuum cleaner main body side, a coupling member connected to a power brush side as a suction means, and an inner pipe 2 for coupling them. The inner pipe 2 is inserted into the coupling member, till the tip of the inner pipe 2 abuts on a level-difference part 18a of a pipe part 18 in such a state as positioning an engaging hole 30 faced upward and a retainer member 20 is screwed around them so that the coupling member is inserted into the inner pipe 2 so as to complete the expansion pipe. In this case, the projection of the retainer member 20 pushes the projection 23 of a cover member 19, an engaging claw 22 pushed thereby is deformed, and the tip of the engaging claw 22 is plunged into the engaging member 30 so that the coupling member is fixed to the tip of the inner pipe 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is interposed between a pipe attachment port of a main body of an electric vacuum cleaner and a power brush for intake air, and accommodates an inner tube so that it can be freely taken in and out of an outer tube, and an outer tube. While being provided with an adjusting mechanism for adjusting the amount of protrusion of the inner pipe from the pipe, the end of the inner pipe is separated from the end of the inner pipe, and is attached to the end of the inner pipe during use. The present invention relates to a telescopic pipe of a vacuum cleaner to which a connecting member for connecting the power brush side is attached.

[0002]

2. Description of the Related Art Conventionally, as an expandable pipe of an electric vacuum cleaner having a power brush for intake, an inner pipe is provided so that it can be inserted into and removed from the outer pipe, and the length of the inner pipe protruding from the outer pipe is adjusted. It is known that it is elastic and can be locked.

[0003] In such a conventional device, in order to reduce the packing appearance at the time of packing, in order to attach the unit on the power brush side to the telescopic pipe, the connecting member attached to the tip of the inner pipe is packed at the inner pipe at the time of packing. The length of the telescopic pipe is reduced by separating it from the tip of the.

Also, for example, by providing a claw on the pipe cover,
The connecting member is provided with a through hole through which the claw is inserted, the inner tube is provided with a fitting hole into which the claw fits, and the claw of the pipe cover is fitted into the fitting claw through the passage hole. The inner pipe and the connecting member are attached. Further, a cap that engages with a claw is provided as an opening stopper between the pipe cover and the connecting member.

[0005]

However, in such a conventional device, since air passes through the inner pipe, a constant inner diameter is required, and if the inner pipe is made of synthetic resin, strength is increased. The inner pipe has a relatively large diameter and the outer pipe has a larger diameter, which increases the weight of the expandable pipe, deteriorates operability, and deteriorates the appearance of the expandable pipe.

Therefore, it is conceivable that the inner pipe is made of metal such as aluminum, but this structure has a problem that the surface to be cleaned is damaged by the inner pipe when the floor suction tool is removed and cleaned. Also, the floor suction device cannot be securely fixed to the inner pipe, and the floor suction device may be uncertainly attached to the inner pipe, and the floor suction device may come off from the inner pipe during cleaning. There is also.

In order to solve these problems, it is conceivable to attach a connecting member for detachably attaching the floor suction tool to the tip of the inner tube. In such a case, as the fixing structure of the connecting member and the inner pipe, for example, a claw is formed on the inner surface of the connecting member, a fitting hole is formed in the inner pipe, and the inner pipe is fitted in the connecting member. It is conceivable to apply a structure in which the claw is fitted in the fitting hole.

However, in such a structure, when the connecting member is once attached to the inner pipe and then the connecting member needs to be detached from the inner pipe due to damage or the like of the connecting member, the inner surface of the connecting member is removed. The claw formed on the claw must be deformed, but the work for deforming the claw becomes very difficult, and the work of detaching the connecting member from the inner pipe may be very troublesome. Further, for this reason, both the connecting member and the inner pipe must be replaced without removing the connecting member from the inner pipe, which causes an inconvenience of imposing a burden on the user.

The present invention has been made in view of the above circumstances, and after the inner pipe and the connecting member are once attached, the expandable pipe of the electric vacuum cleaner can be easily removed from the inner pipe. Is intended to provide.

[0010]

The present invention is interposed between a pipe mounting port of a main body of an electric vacuum cleaner and a power brush for intake, and accommodates an inner pipe with respect to an outer pipe so that the inner pipe can be freely taken in and out. , Equipped with an adjusting mechanism for adjusting the amount of protrusion of the inner pipe from the outer pipe, and is attached to the end of the inner pipe at the time of use while being separated from the end of the inner pipe at the end of the inner pipe. In a telescopic pipe of an electric vacuum cleaner to which a connecting member for connecting the power brush side is attached, the attachment mechanism of the connecting member and the inner pipe has an engagement hole formed at a tip portion of the inner pipe. An engaging claw provided on the connecting member and protruding into the engaging hole; a projection provided on the connecting member for urging the engaging claw in the engaging direction; and provided on the connecting member, The engaging claw is pushed into the engaging hole to maintain the state. It is those with the eye of a screwing mechanism.

[0011] Further, it is interposed between the pipe mounting opening of the main body of the electric vacuum cleaner and the power brush for intake, and accommodates the inner tube so that it can be freely taken in and out of the outer tube, and The tip of the inner tube is separated from the tip of the inner tube, and is attached to the tip of the inner tube to connect the power brush side while using the adjusting mechanism for adjusting the amount of protrusion. In the expansion pipe of the electric vacuum cleaner to which the connecting member for attaching is attached, the attaching mechanism of the connecting member and the inner pipe is provided in the engaging hole formed in the distal end portion of the inner pipe and the connecting member. An engaging claw protruding into the engaging hole, a projection provided on the connecting member for urging the engaging claw in the engaging direction, and a projection mounted on the connecting member and protruding into the engaging hole. The pressing member is provided.

Further, it is interposed between the pipe mounting opening of the main body of the electric vacuum cleaner and the power brush for intake, and accommodates the inner tube so that it can be freely taken in and out of the outer tube, and The tip of the inner tube is separated from the tip of the inner tube, and is attached to the tip of the inner tube to connect the power brush side while using the adjusting mechanism for adjusting the amount of protrusion. And a stand piece for engaging the telescopic pipe with the main body of the electric vacuum cleaner by engaging the engaging portion provided on the main body of the electric vacuum cleaner. In the expansion pipe of the vacuum cleaner, the attachment mechanism of the connecting member and the inner pipe,
An engagement hole formed in the tip portion of the inner pipe, an engagement claw provided in the coupling member and protruding into the engagement hole, and an engagement claw provided in the coupling member in the engagement direction. And a screwing mechanism that is provided on the stand piece and that holds the state by allowing the engaging claw to project into the engaging hole.

Further, it is interposed between the pipe mounting opening of the main body of the electric vacuum cleaner and the power brush for intake air to accommodate the inner tube so that it can be freely taken in and out of the outer tube, and The tip of the inner tube is separated from the tip of the inner tube, and is attached to the tip of the inner tube to connect the power brush side while using the adjusting mechanism for adjusting the amount of protrusion. And a stand piece for engaging the telescopic pipe with the main body of the electric vacuum cleaner by engaging the engaging portion provided on the main body of the electric vacuum cleaner. In the expansion pipe of the vacuum cleaner, the attachment mechanism of the connecting member and the inner pipe,
An engagement hole formed in the tip portion of the inner pipe, an engagement claw provided in the coupling member and protruding into the engagement hole, and an engagement claw provided in the coupling member in the engagement direction. First to urge
And a second protrusion provided on the stand piece, the second protrusion pressing the first protrusion by mounting the stand piece on the connecting member to push the engaging claw into the engaging hole. A packing for sealing between the inner pipe and the connecting member by mounting the stand piece on the connecting portion is provided.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Embodiments of the present invention will be described in detail.

1 (a), 1 (b) and 2
(A), (b) has shown the expansion-contraction pipe of the vacuum cleaner concerning one Example of this invention.

This expandable pipe is roughly divided into an outer tube 1 connected to the main body of the electric vacuum cleaner (not shown), a connecting member 2 connected to the power brush (not shown) side of the suction means, and an external member. It is composed of an inner tube 3 that connects the tube 1 and the connecting member 2, and the inner tube 3 is configured to be able to be taken in and out of the outer tube 1 and to be fixed at an appropriate protruding position. There is.

The outer pipe 1 is provided with a connecting portion 4 for connecting to the main body side and an operating portion 5 for releasing the engaged state of the outer pipe 1 and the inner pipe 3, and the connecting portion 4 is also connected. The member 2 is provided with a connecting portion 6 for connecting to the power brush side, and a stand piece 7 for hooking the expandable pipe on an engaging portion (not shown) such as the main body when housed.

Further, the inner tube 3 is formed with a housing portion 8 for housing a wiring mechanism for supplying electric power to the power brush, and on the opposite side thereof, a plurality of engaging members are arranged at predetermined intervals. A ditch 9 is formed. Here, during normal use, the direction in which the housing portion 8 is formed is the gravity upward direction, and the direction in which the engagement groove 9 is formed is the gravity downward direction. Further, the engagement groove 9 is formed in a mode parallel to the direction orthogonal to the extension direction of the inner pipe 2.

Since the distance from the outer pipe 1 to the connecting member 2 changes according to the amount of protrusion of the inner pipe 3 from the outer pipe 1, the wiring mechanism housed in the housing portion 8 of the inner pipe 3 is , Fig. 3
As shown in (a), (b), FIG. 4, and FIG. 5, it is composed of a pair of expansion springs 10 and 11 formed of a spring material (for example, phosphor bronze steel) having good electrical conductivity and toughness. .
In addition, the wiring mechanism in the outer tube 1 has a sleeve 1 for protection.
It is composed of a pair of lead wires 14 and 15 housed in Nos. 2 and 13 (see FIG. 6A).

The sleeves 12 and 13 are made of an antistatic resin and can be housed in the housing portion 8. One end of the sleeve 12 and 13 is inserted into the housing portion 8. In this way, by forming the sleeves 12 and 13 from the antistatic resin, the generated static electricity causes the sleeves 12 and 1 to
It is possible to avoid a situation where dust adheres to the periphery of 3, and it is possible to prevent the inner tube 2 from being caught in and out of the outer tube 1 and to improve operability.

The expandable springs 10 and 11 are housed in the housing portion 8 in a manner housed in the sleeve 16.
This sleeve 16 is provided with each expansion spring 10,
It is composed of cylindrical portions 16a and 16b into which 11 is inserted, and a bridge portion 16c that connects the cylindrical portions 16a and 16b (see FIG. 6B).

The connecting member 3 is integrally formed with the pipe portion 18 inserted into the tip of the inner pipe 2, the cover member 19 provided above the pipe portion 18 for accommodating the connecting portion 6, and the stand piece 7. And a retainer member 20 for tightening the inserted inner pipe 2 and closing the gap between the inner pipe 2 and the connecting member 3 (Figs. 7 (a), (b),
(C) and FIG. 8).

The connecting portion 6 engages with an engaging claw (not shown) formed in the connecting portion on the power brush side, and a clamp 21 for releasing the engagement, and
It comprises a terminal portion (not shown) for supplying electric power to the power brush side.

The retainer member 20 is separated at the connecting position with the stand piece 7 and is fixed by screwing. In addition, the pipe portion 18
A cantilever-shaped engaging claw 22 is formed on the upper side of the, and a projection 23 for deforming the engaging claw 22 inward of the pipe portion 18 is formed inside the cover member 19. There is.

A recess 24 is formed at a position facing the protrusion 23 on the outside of the cover member 19, and a positioning protrusion 25 formed on the retainer member 20 is fitted into the recess 24. It A recess 26 is formed on the side of the pipe 18 opposite to the engaging claw 22, and a positioning projection 27 formed on the retainer member 20 is fitted into the recess 26. Further, the pipe portion 18 has a step portion 18a for receiving the end portion of the inner pipe 2 to be inserted.
Are formed.

The packing 28 is for sealing the gap between the pipe portion 18 and the cover member 19 and the retainer member 20. Further, the connector 29 is for connecting to the wiring mechanism and transmitting electric power to the terminal portion.

Further, as shown in FIG. 9 (a), an engagement hole 30 is formed in the accommodation portion 8 at the tip of the inner tube 2.
In addition, the cap member 31 is provided at the open end of the outer tube 1,
This is for closing the gap between the inner pipe 2 and the outer pipe 1.

The expandable pipe of this embodiment is
The connecting member 3 is removed from the inner pipe 2 in order to reduce the size of the packing material. To complete the expansion pipe by inserting the connecting member 3 into the inner pipe 2, first, as shown in FIG. 10, with the engagement hole 30 aligned so as to face upward, the pipe portion 18 The inner pipe 2 is inserted into the connecting member 3 until the tip of the inner pipe 2 hits the step portion 18a, and then the retainer member 20 is screwed.

As a result, as shown in FIG. 11, the projection 25 of the retainer member 20 pushes the projection 23 of the cover member 19, and the engagement claw 22 pushed by the projection 23 is deformed to engage the engagement claw 2.
The tip of 2 rushes into the engagement hole 30, and as a result, the connecting member 3 is fixed to the tip of the inner pipe 2.

An example of the operation unit 5 is shown in FIGS.

A stepped portion 1a for accommodating and fixing the operating portion 5 is formed inside the outer pipe 1, and an inner pipe 2 is provided so that the inner pipe 2 can be inserted therethrough. The holding member 33 having a substantially cylindrical shape for holding has an edge portion 34 formed on an end surface facing the step 1a. The edge portion 34 is provided with a substantially annular packing 35.
A stopper member 36 is arranged between the stepped portion 1a and the stepped portion 1a.

Further, in the holding member 33, a window 39 through which the pin 38 for thrusting into the engaging groove 9 and fixing the inner pipe 2 is passed, and a moving range of the pin 38 is restricted, and the pin 38 is provided. An inclined portion 40 for moving the window to the window 39 is formed.

A substantially annular holder member 41 is disposed outside the holding member 33. The holder member 41 has a recess 42 for accommodating the pin 38 and regulating the range of movement thereof. An inclined portion 45 for moving the pin 38 to the window 39 in cooperation with a wall portion 40a (described later) of the inclined portion 40 provided on the holding member 33 is provided, and the holder member 41 is moved in the moving direction. Knob part 46 for moving
Are integrally formed.

Further, the knob portion 46 and the cap member 31
A spring 47 for urging the holder member 41 in the direction of the connecting portion 4 is provided between and. In addition, the inclined portion 40 of the holding member 33 is formed with vertical wall portions 40a at predetermined intervals, and the inclined portion 4 of the holder member 41 is formed.
5, a wall portion 45a is formed in such a manner that the wall portion 40a can be in close contact therewith. Further, windows 41a and 41b are formed on both side surfaces of the holder member 41.

A packing 48 for securing airtightness between the inserted sleeves 12 and 13 is fixed to the open end of the housing portion 8 via a packing stopper 49.

Therefore, the holder member 41 is normally urged to the left by the urging force of the spring 47 as shown in FIG. 12, and the wall portion 4 of the inclined portion 45 of the holder member 41 is constantly urged.
The position of the holder member 41 is regulated in such a manner that the 5a abuts on the wall portion 40a of the inclined portion 40 of the holding member 33. At this time, the pin 38 housed in the recess 42 is
The holder member 41 is pushed by the wall portion 40a of 0 to move toward the window 39, rides on the inclined portion 45 of the holder member 41, and protrudes from the window 39 into one of the engaging grooves 9 of the inner pipe 2 and the holder member 41. Ride on the flat part of.

As a result, the pin 38 is attached to the holder member 41.
And the holding member 33, the pin 38 connects the window 39 of the holding member 33 and the engagement groove 9 of the inner pipe 2, so that the inner pipe 2 is fixed in that state. In addition, the holding member 33
The edge 34 of the stopper member 36 and the packing 3
While hitting the step 1a of the outer tube 1 through 5,
Since the opposite side is closed by the cap member 31 fixed to the outer pipe 1, the holding member 33 is fixed to the open end of the outer pipe 1. Thereby, the inner pipe 2 is fixed to the outer pipe 1 via the holding member 33, the pin 38, and the holder member 41.

From this state, when the knob portion 46 is moved in the direction of the cap member 31 of the outer tube 1 against the biasing force of the spring 47, the flat portion of the holder member 41 causes the window 39 to move.
Since the concave portion 42 is located below the window 39, the pin 38 falls off the window 39 and moves down the inclined portion 45 to the concave portion 42.

As a result, the fixed state of the inner pipe 2 is released, so that the inner pipe 2 can be fed out from the outer pipe 1, and the inner pipe 2 can be inserted into the outer pipe 1 and the inner pipe 2 can be inserted.
The amount of protrusion from the outer tube 1 can be adjusted.

In this way, in this embodiment, since the knob portion 46 is formed integrally with the holder member 41, the number of parts of the operating portion 5 can be reduced, the cost can be reduced, and the assembly can be performed. It is possible to improve the property. Furthermore, the structure of the operation unit 5 is simplified, and the operation can be performed more reliably than when the operation unit 5 is composed of a plurality of parts.

Further, the wall portion 4 of the inclined portion 40 of the holding member 33.
0a and the wall portion 45a of the inclined portion 45 of the holder member 41 are in close contact with each other, so that the pin 38 accommodated in the concave portion 42 rides on the inclined portion 45 from the concave portion 42 and the window 3
The movement of the pin 38 until reaching 9 becomes very smooth, and it is possible to avoid inconveniences such as being caught when the inner tube 2 is taken in and out.

Further, since the spring 47 is provided on the same side as the knob portion 46, it is possible to prevent the holder member 41 or the like from moving like a kozil about the pin 38 as a fulcrum due to the urging force of the spring 47. .

An example of the wiring mechanism of this embodiment is shown in FIGS.
It is shown in FIG.

At one end of the expansion springs 10 and 11,
One end of the lead wires 14 and 15 that are wiring members to the connecting portion 4 is connected, and the other end of the expansion springs 10 and 11 is a connector contact member that is one element of the wiring member to the connecting portion 6. The lead wires 52 and 53 of 51 are connected.

The expansion springs 10 and 11 which constitute the main wiring mechanism in the inner pipe 2 are shown in FIGS.
As shown in (c), the outer dimension of the central portion is the cylindrical portion 1.
6a, 16b are formed to have a size slightly smaller than the inner diameters, and both ends thereof are gradually narrowed so that the outermost ends are formed into a taper shape in which a plurality of small diameter parts are continuously formed, and the final one turn of the ends is formed. Is raised 90 degrees and leads 14,
Connecting rings 10a, 10 for connecting 15, 52, 53
b, 11a, 11b. In addition, lead wire 1
4, 15, 52 and 53 are connecting rings 10a, 10b and 11
After being entangled with a and 11b, it is fixed by soldering.

Further, the connector contact member 51 and the expansion springs 10 and 1 connected to the connector contact member 51.
As shown in FIG. 21, the end portion of the No. 1 on the side of the connecting rings 10b and 11b is housed in the cord cover 55 in which the insertion opening of the connector 29 is formed.

The cord cover 55 is a chamber 55a for accommodating the connector contact member 51 for connecting with the connector 29.
And has a shape in which two cylindrical portions 55b and 55c for accommodating the expansion springs 10 and 11 are connected, and is configured to be fitted and formed by being divided into two in the thickness direction.

The cylindrical portions 55b and 55c are inserted into the cylindrical portions 16a and 16b of the sleeve 16, respectively. Therefore, both ends of the expansion springs 10 and 11 are formed to have a diameter smaller than the central portion by a dimension corresponding to the thickness of the cylindrical portions 55b and 55c.

When both ends of the expansion springs 10 and 11 are formed to have the same outer diameter, the cylindrical portions 16a and 16b of the sleeve 16 are attached to the cylindrical portions 55b and 5 of the cord cover 55, respectively.
5c is inserted, the cylindrical portion 16a of the sleeve 16
16b has a large diameter, and the cylindrical portions 16a, 1 of the sleeve 16
A gap is formed between the inner surface of 6b and the expansion springs 10 and 11. With this configuration, when the inner pipe 2 is taken in and out of the outer pipe 1, the expansion springs 10 and 11 move the cylindrical portions 16a and 16b.
When it is bent inside, a strong load acts on that portion, and the extension springs 10 and 11 are disconnected during long-term use.

The lead wire 5 is attached to the cylindrical portions 55b and 55c.
Fixing parts 55d and 55e for fixing the 2, 3 and 53 and ribs 5 for holding the ends of the expansion springs 10 and 11.
5f and 55g are formed, and the inner diameter of the 5f and 55g is determined according to the size of the small diameter portion at the end of the expansion springs 10 and 11. The ribs 55f and 55g are formed in a substantially D shape so that a gap can be formed above the ribs 55f and 55g when the cord cover 55 is fitted and formed. In addition, the rib 5 is cut out at the center.
The connecting rings 10b and 11b of the expandable springs 10 and 11 are inserted into the notches of the 5h and 55i, respectively, so that the connecting rings 10b and 11b can rotate with the movement of the expandable springs 10 and 11. To be prevented.

Here, as shown in FIG. 22, the small-diameter portions at the ends of the expansion springs 10 and 11 are fixed to the cord cover 55 in such a manner that the ribs 55f and 55g are sandwiched at a position about 4 turns from the ends. .

In this manner, the outermost ends of the turns are received by the cylindrical portions 55b and 55c of the cord cover 55, and the connecting portions to the cylindrical portions 55b and 55c are ribs 55f and 5c.
Since it is received by 5g and the inner surfaces of the cylindrical portions 55b, 55c,
The spring load when the expansion springs 10 and 11 expand and contract can be absorbed in this portion, so that the life of the expansion springs 10 and 11 can be extended.

Further, both ends of the expansion springs 10 and 11 are formed to have a small diameter corresponding to the inner diameters of the cylindrical portions 55b and 55c of the cord cover 55, and the central portion thereof has the cylindrical portion 1 of the sleeve 14.
Since the expansion springs 10 and 11 are formed to have a large diameter corresponding to the inner diameters of the expansion springs 4a and 14b, the expansion springs 10 and 11 are deformed along the inner walls of the cylindrical portions 16a and 16b of the sleeve 16. The spring load at the time of expansion and contraction can be reduced, so that the expansion springs 10 and 1
The life of 1 can be extended.

On the other hand, as shown in FIG. 18, the opposite ends of the expansion springs 10 and 11 have ribs 12a, which are formed on the ends of the sleeves 12 and 13 at the outermost ends of several turns.
The sleeves 12 and 13 are housed in the chambers 12b and 13b formed at the ends of the sleeves 12 and 13 so as to sandwich the sleeve 13a.

Therefore, also at this end, the spring load when the expandable springs 10 and 11 expand and contract is absorbed in this part, whereby the expandable springs 10 and 1 are expanded.
The life of 1 can be extended.

Further, ribs 12c and 13c each having a notch formed in the central portion for sandwiching and holding the connecting rings 10a and 11a of the expansion springs 10 and 11 are provided on the sleeves 12 and 13, respectively. This rib 12c,
By 13c, the rotation of the connecting rings 10a and 11a is restrained when the expandable springs 10 and 11 expand and contract.

Further, as shown in FIG. 23, the sleeve 1
The end portions of the connecting portions 2 and 13 on the side of the connecting portion 4 are inserted into the accommodating portion 58 formed in the upper portion of the outer tube 1, and are accommodated by the engaging portion 60 protruding from the cover member 59 provided in the upper portion. It is fixed to the portion 58.

Therefore, the sleeves 12 and 13 are connected to the outer tube 1.
In order to attach it to the housing, it suffices to insert the end portion into the housing portion 58, and the attaching work becomes very simple and reliable.

In addition, at the tips of the lead wires 14 and 15,
The terminals 61 and 62 are connected, and the terminals 61 and 62 are fixed to a fixed seat 64 formed on the upper surface of the outer tube 1.

Further, the protrusion 65 is for engaging with an element connecting to the connecting portion 4. As this engaging means, the same means as the clamp 21 in the connecting portion 6 can be applied.

[0061]

As described above, according to the present invention,
When the connecting member is removed from the inner pipe after once attaching the inner pipe and the connecting member, it is sufficient to remove the engaging claw from the engaging hole after releasing the screwing of the screwing mechanism. Has the effect of being significantly improved.

Further, when removing the connecting member from the inner pipe, only the pressing member needs to be removed, so that the work of removing the connecting member from the inner pipe is very simple.

Also, the inner pipe and the connecting member can be fixed by using a stand piece for mounting the expandable pipe on the main body, and when the connecting member is removed from the inner pipe, the stand piece only has to be removed. Therefore, there is an effect that the work of removing the connecting member from the inner pipe becomes very simple.

By attaching a stand piece,
Since the packing that seals between the inner pipe and the connecting member is provided, air leakage between the inner pipe and the connecting member can be prevented, dust collection efficiency can be significantly improved, and packing workability is also good. It also has the effect of becoming.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a stretched pipe according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a state in which a telescopic pipe according to an embodiment of the present invention is contracted.

FIG. 3 is a schematic sectional view of a telescopic pipe according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view taken along the line aa of FIG.

FIG. 5 is a schematic partial sectional view showing a telescopic pipe according to an embodiment of the present invention.

6 is a sectional view taken along the line bb and a sectional view taken along the line cc of FIG.

FIG. 7 is a three-sided view showing a configuration of an attach section.

FIG. 8 is a schematic cross-sectional partial view showing a configuration of an attachment portion.

FIG. 9 is a schematic configuration diagram showing an example of a telescopic pipe before attaching an attaching part.

FIG. 10 is a schematic perspective view for explaining an operation when attaching the attaching unit.

FIG. 11 is a schematic cross-sectional partial view for explaining the fixing of the attachment part and the inner pipe.

FIG. 12 is a schematic cross-sectional partial view for explaining an operation unit.

FIG. 13 is a schematic sectional view for explaining an operation unit.

FIG. 14 is a schematic perspective view showing an example of a holder member.

FIG. 15 is a schematic perspective partial view showing an inclined portion of a holder member.

FIG. 16 is a schematic perspective view showing an example of a holding member.

FIG. 17 is a schematic perspective partial view showing an inclined portion of a holding member.

FIG. 18 is a schematic sectional partial view for explaining the operation of the operation unit.

FIG. 19 is a schematic sectional view part for explaining a wiring mechanism.

FIG. 20 is a schematic view showing an example of a telescopic pipe.

FIG. 21 is a schematic perspective view showing an example of a cord cover.

FIG. 22 is a schematic partial sectional view for explaining a fixed state of the expansion spring with respect to the cord cover.

FIG. 23 is a schematic partial sectional view showing the structure of the wiring mechanism near the connecting portion.

24 is a cross-sectional view taken along the line ee of FIG.

FIG. 25 is a schematic diagram showing a structure of a wiring mechanism near a connecting portion.

[Explanation of symbols]

 1 Outer pipe 2 Inner pipe 3 Connection member 4,6 Connection part 5 Operation part 7 Stand piece 8 Storage part 9 Engagement groove 10,11 Expansion spring 12,13,52,53 Lead wire 20 Retainer member 22 Engagement claw 23 Protrusion 28 packing 31 cap member 33 holding member 38 pin 39 window 40, 45 inclined part 40a, 45a wall part 41 holder member 42 recessed part 55 cord cover 55a room 55b, 55c cylindrical part 55f, 55g rib

Claims (4)

[Claims] 1. An electric vacuum cleaner, which is interposed between a pipe mounting port of a main body of the electric vacuum cleaner and a power brush for intake, accommodates an inner tube so that it can be freely taken in and out of an outer tube, and While having an adjusting mechanism for adjusting the amount of protrusion, the distal end portion of the inner pipe is separated from the distal end portion of the inner pipe,
In a telescopic pipe of an electric vacuum cleaner, which is attached to a tip end portion of the inner pipe at the time of use and a connecting member for connecting the power brush side is attached, a mounting mechanism of the connecting member and the inner pipe is An engagement hole formed in a tip portion, an engagement claw provided in the coupling member and protruding into the engagement hole, and an engagement claw provided in the coupling member and urging the engagement claw in the engagement direction. An extendable pipe for an electric vacuum cleaner, comprising: a protrusion; and a screwing mechanism provided on the connecting member for retaining the state by causing the engagement claw to protrude into the engagement hole. 2. An electric vacuum cleaner body is interposed between a pipe mounting port and a power brush for intake air to accommodate an inner tube with respect to an outer tube so that the inner tube can be freely taken in and out, and the inner tube from the outer tube is removed. While having an adjusting mechanism for adjusting the amount of protrusion, the distal end portion of the inner pipe is separated from the distal end portion of the inner pipe,
In a telescopic pipe of an electric vacuum cleaner, which is attached to a tip end portion of the inner pipe at the time of use and a connecting member for connecting the power brush side is attached, a mounting mechanism of the connecting member and the inner pipe is An engagement hole formed in a tip portion, an engagement claw provided in the coupling member and protruding into the engagement hole, and an engagement claw provided in the coupling member and urging the engagement claw in the engagement direction. An expandable pipe for an electric vacuum cleaner, comprising: a protrusion; and a pressing member that is attached to the connecting member and that pushes the protrusion into the engagement hole. 3. An electric vacuum cleaner body is interposed between a pipe mounting opening and a power brush for intake air to accommodate an inner tube so that it can be freely taken in and out of the outer tube, While having an adjusting mechanism for adjusting the amount of protrusion, the distal end portion of the inner pipe is separated from the distal end portion of the inner pipe,
At the time of use, a connecting member is attached to the tip of the inner pipe to connect the power brush side, and the connecting member engages with an engaging portion provided on the main body of the electric vacuum cleaner to expand and contract. In a telescopic pipe of an electric vacuum cleaner, in which a stand piece for mounting the pipe to the main body of the electric vacuum cleaner is arranged, the attachment mechanism of the connecting member and the inner pipe is a member provided at a tip portion of the inner pipe. A fitting hole, an engaging claw provided on the connecting member and protruding into the engaging hole, a protrusion provided on the connecting member for urging the engaging claw in the engaging direction, and provided on the stand piece. An expandable pipe for an electric vacuum cleaner, comprising a screwing mechanism for causing the engagement claw to enter the engagement hole and holding the state. 4. The inner tube is inserted between the outer tube and the pipe mounting opening of the main body of the electric vacuum cleaner, and the power brush for intake air is inserted into and removed from the outer tube. While having an adjusting mechanism for adjusting the amount of protrusion, the distal end portion of the inner pipe is separated from the distal end portion of the inner pipe,
At the time of use, a connecting member is attached to the tip of the inner pipe to connect the power brush side, and the connecting member engages with an engaging portion provided on the main body of the electric vacuum cleaner to expand and contract. In a telescopic pipe of an electric vacuum cleaner, in which a stand piece for mounting the pipe to the main body of the electric vacuum cleaner is arranged, the attachment mechanism of the connecting member and the inner pipe is a member provided at a tip portion of the inner pipe. A fitting hole, an engaging claw provided on the connecting member and protruding into the engaging hole, a first protrusion provided on the connecting member for urging the engaging claw in the engaging direction, and the stand. A second protrusion that is provided on the piece and that presses the first protrusion when the stand piece is attached to the connecting member to push the engaging claw into the engaging hole; and the connecting portion of the stand piece. Connection to the inner pipe by mounting Telescopic pipe of the electric vacuum cleaner characterized by comprising a packing for sealing between the wood.