JP4461581B2 - Extension tube for vacuum cleaner and vacuum cleaner using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an extension tube for a vacuum cleaner and a vacuum cleaner using the extension tube.
[0002]
[Prior art]
An extension tube of a conventional vacuum cleaner will be described with reference to FIGS.
[0003]
First, in FIG. 11 and FIG. 12, a tip pipe 52 is provided at the other end of a hose 51 having one end connected to the cleaner body, and the tip pipe 52 is an extension pipe composed of an outer pipe 56, an inner pipe 55, and the like. It is connected to the floor nozzle 53 via 54. The extension pipe 54 includes an outer pipe 56, an inner pipe 55 that is inserted from the other end of the outer pipe 56 and expands and contracts in the axial direction, and a rotation that is rotatably fitted to the end of the outer pipe 56. The ring 57 and the fastening ring 62 that is disposed in the rotating ring 57 and keeps the inner pipe 55 locked.
[0004]
When the rotating ring 57 screwed to the end of the outer pipe 56 by the screw fitting portion 57a is rotated in the direction of moving to the opposite side of the inner pipe 55, the rotating ring 57 is opposite to the inner pipe 55 by screw fitting. Move to the side. At this time, the fastening ring 62 that is concavo-convexly fitted to the rotating ring 57 also moves to the opposite side of the inner pipe 55 in conjunction with it. As a result, the wedge-shaped end portion 62 a of the fastening ring 62 bites into the end portion inner surface 56 a of the outer pipe 56. The inner peripheral surface of the end portion 62a of the fastening ring 62 that bites into the end portion inner surface 56a of the outer pipe 56 is pressed against the outer peripheral surface of the inner pipe 55, whereby the inner pipe 55 is tightened and locked. Become. Next, when the rotating ring 57 screwed to the end of the outer pipe 56 by the screw fitting portion 57a is rotated in the direction of moving to the inner pipe 55 side, the rotating ring 57 is moved to the inner pipe 55 side by screw fitting. Moving. At this time, the fastening ring 62 that is concavo-convexly fitted to the rotating ring 57 also moves in conjunction with the inner pipe 55 side. As a result, the end 62a of the wedge-shaped fastening ring 62 biting into the end inner surface 56a of the outer pipe 56 moves away from the end inner surface 56a of the outer pipe 56, and the inner pipe of the end 62a of the fastening ring 62 is moved. The pressure contact with the outer peripheral surface of 55 is released, the locked state of the inner pipe 55 is also released, and the inner pipe 55 can be expanded and contracted in the axial direction.
[0005]
Still another conventional example will be described with reference to FIG. The claw portion 63 is configured by a push button 59 that is fitted by a spring 60 being urged by a plurality of concave portions 61 provided in the axial direction of the inner pipe 55. When the push button 59 is pushed with a finger, the claw portion 63 comes out of the recess 61, the fitting is released, the locked state of the inner pipe 55 is released, and the inner pipe 55 can be expanded and contracted in the axial direction. Next, when the finger is released from the pressed push button 59, the claw portion 63 of the push button 59 biased by the spring 60 enters and fits into the recess 61, and the inner pipe 55 is in a locked state. . That is, if the inner pipe 55 is pulled out to a length suitable for use by pushing the push button 59 and released from the push button 59, the inner pipe 55 is fixed at that length.
[0006]
[Problems to be solved by the invention]
A rotating ring 57 that is rotatably fitted to the end of the outer pipe 56 and a fastening ring 62 that is disposed in the rotating ring 57 and maintains the locked state of the inner pipe 55 are: When the locked state or the locked state is released and the inner pipe 55 is expanded and contracted, it is necessary to rotate the rotating ring 57, and there is a problem that the operability is not good. That is, in order to press the fastening ring 62 against the outer peripheral surface of the inner pipe 55, the rotating ring 57 must be rotated considerably. If the fastening ring 62 is not strengthened, the floor nozzle 53 collides with the wall. As a result, the inner pipe 55 is contracted, so that force is required for pressure contact.
[0007]
In addition, the configuration including the push button 59 that urges and fits the claw portion 63 into the recess 61 provided in the inner pipe 55 by the spring 60 is easier to operate than the method using the rotating ring 57 described above. However, there is a problem that the operation of pushing the push button 59 with a finger is necessary, the position of the push button 59 must be searched and pushed, and the operability is not good.
[0008]
The present invention solves the conventional problems as described above, and aims to improve the telescopic operability.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention includes an outer pipe, a plurality of recesses provided in the outer peripheral axial direction, an inner pipe movable in the axial direction in the outer pipe, and the outer pipe. An operating body provided between the inner peripheral surface of the end of the inner pipe and the outer peripheral surface of the inner pipe, and provided with a claw portion that engages with the concave portion of the inner pipe, and disposed on the outer periphery of the outer pipe. , has been closed and release means for releasing the engagement of the recess of the inner pipe and the operating body, the release means is arranged to be movable in the axial direction of the outer pipe, the axial And the release means is arranged to be movable in a direction perpendicular to the axial direction of the outer pipe. With the movement in the direction perpendicular to the direction, the operating body and the concave portion of the inner pipe Those that are configured to release the engagement.
[0010]
In this configuration, since the release means is arranged on the outer periphery of the outer pipe, the release means is not limited to the position of the operating body that engages with the concave portion of the inner pipe, and the release means is arranged at a place where the outer pipe is easily operated. In addition to being able to do so, the release means can be arranged so as to cover the whole or part of the outer periphery of the outer pipe, so there is no need for operations such as searching for the position of the push button as in the prior art, Since the operating body is engaged with the concave portion of the inner pipe, an operation of rotating the rotating ring and press-contacting the inner pipe as in the prior art becomes unnecessary, and the telescopic operability is improved. Further, the release means is arranged so as to be movable in the axial direction of the outer pipe, and the engagement of the operating body is released along with the movement in the axial direction. Therefore, the release pipe is moved in the axial direction by a simple operation. It is possible to disengage the recesses of the vacuum cleaner, and it is possible to provide an extension tube for a vacuum cleaner that can be easily extended and contracted and has good usability.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention has an outer pipe, a plurality of recesses provided in the axial direction of the outer periphery, an inner pipe movable in the axial direction in the outer pipe, and the outer pipe An operating body provided between the inner peripheral surface of the end of the inner pipe and the outer peripheral surface of the inner pipe, and provided with a claw portion that engages with the concave portion of the inner pipe, and disposed on the outer periphery of the outer pipe. , has been closed and release means for releasing the engagement of the recess of the inner pipe and the operating body, the release means is arranged to be movable in the axial direction of the outer pipe, the axial And the release means is arranged to be movable in a direction perpendicular to the axial direction of the outer pipe. Engagement of the operating body with the concave portion of the inner pipe accompanying movement in a direction perpendicular to the direction Those that are configured to release.
[0012]
In this configuration, since the release means is arranged on the outer periphery of the outer pipe, the release means is not limited to the position of the operating body that engages with the concave portion of the inner pipe, and the release means is arranged at a place where the outer pipe is easily operated. In addition to being able to do so, the release means can be arranged so as to cover the whole or part of the outer periphery of the outer pipe, so there is no need for operations such as searching for the position of the push button as in the prior art, Since the operating body is engaged with the concave portion of the inner pipe, an operation of rotating the rotating ring and press-contacting the inner pipe as in the prior art becomes unnecessary, and the telescopic operability is improved.
[0013]
The invention of claim 1, wherein the present invention, the release means, arranged movably in the axial direction of the outer pipe, so to release the engagement of the operating member with the movement of the axial, axial releasing means The engagement of the concave portion of the inner pipe can be released by a simple operation of moving in the direction, and an extension tube for a vacuum cleaner that can be easily extended and contracted and has good usability can be provided .
[0014]
According to a second aspect of the present invention, one end of an extension pipe for a vacuum cleaner according to the first aspect is connected to a tip pipe of a hose connected to a vacuum cleaner body incorporating an electric blower, and the electric vacuum cleaner By using a vacuum cleaner in which the other end of the machine extension pipe receives the suction force of the vacuum cleaner body, a user-friendly vacuum cleaner can be provided.
[0015]
【Example】
Example 1
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected about the same part as a prior art example, and the description is abbreviate | omitted.
[0016]
The extension pipe has an outer pipe 1 and an inner pipe 2 that is inserted into the outer pipe 1 and expands and contracts in the axial direction (arrow X direction). As shown in FIG. A claw portion 5 is formed at one end of the operation body 4, and the claw portion 5 engages with a plurality of recesses 6 provided in the axial direction on the outer periphery of the inner pipe 2. It is urged in the direction to engage with. A cylindrical dissociation body 3 (corresponding to a releasing means) provided on the inner peripheral surface with a contact portion 8a in contact with the other end portion on the side opposite to the claw portion 5 of the operating body 4 is provided on the outer periphery of the end portion of the outer pipe 1. The dissociator 3 is movable in the axial direction. When the dissociating body 3 is moved in the A direction, the operating body 4 is pushed down by the contact portion 8a, the claw portion 5 is detached from the concave portion 6 provided in the inner pipe 2, and the engagement between the claw portion 5 and the concave portion 6 is released. The inner pipe 2 can be expanded and contracted. Reference numeral 11 denotes a support body that supports the operation body 4 provided at the end of the outer pipe 1.
[0017]
The operation of the above configuration is as follows.
[0018]
When the dissociation body 3 is grasped by hand and the inner pipe 2 is pulled out, the dissociation body 3 moves in the A direction, the operation body 4 is pushed down by the contact portion 8a, and the claw portion 5 is detached from the recess 6 provided in the inner pipe 2. The inner pipe 2 can be expanded and contracted. Further, after cleaning, the inner pipe 2 is stored in the outer pipe 1 by holding the tip of the hose 51 and pushing the tip of the hose 51 toward the floor while moving the dissociator 3 in the direction A. you can be one in which an electric vacuum cleaner using an extension pipe good vacuum cleaner of usability and it can be provided.
[0019]
(Example 2)
Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the said Example, and the description is abbreviate | omitted. When the dissociating body 3 is moved in the B direction, the operating body 4 is pushed down by the contact part 8a, and when the dissociating body 3 is moved in the C direction, 12 parts of the operating body 4 are pushed down by the contact part 8b and the claw part 5 is moved to the inner pipe 2. It is made to detach | leave from the provided recessed part 6, the engagement of the nail | claw part 5 and the recessed part 6 is cancelled | released, and the expansion-contraction movement of the inner pipe 2 is enabled. That is, the inner pipe 2 can be expanded and contracted regardless of whether it is moved in either the B direction or the C direction.
[0020]
The operation of the above configuration is as follows.
[0021]
When the dissociation body 3 is grasped by hand and the inner pipe 2 is to be pulled out, the dissociation body 3 moves in the B direction, the operation body 4 is pushed down by the contact portion 8a, and the inner pipe 2 is easily pulled out from the outer pipe 1. When the inner pipe 2 is to be pushed in, the dissociation body 3 moves in the C direction and the claw portion 5 is detached from the recess 6 provided in the inner pipe 2 so that the inner pipe 2 is easily pushed into the outer pipe 1. . That is, if the dissociation body 3 is grasped with one hand, the inner pipe 2 is grasped with the other hand, and the inner pipe 2 is pulled out, the inner pipe 2 is pulled out from the outer pipe 1 as it is, and is pushed in. The inner pipe 2 is pushed into the outer pipe 1 as it is, and the inner pipe 2 can be expanded and contracted very easily.
[0022]
(Example 3)
Next, a third embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the said Example, and the description is abbreviate | omitted. The dissociating body 3 provided on the outer periphery of the outer pipe 1 is provided in a substantially arc shape so as to include a part of the outer periphery of the outer pipe 1, and the claw portion 5 of the operating body 4 is dissociated from the engaging portion 6 of the inner pipe 2. It is provided so as to be movable in the direction of arrow E. When the claw portion 5 is released from the engaging portion 6, the engagement between the claw portion 5 and the concave portion 6 is released and the inner pipe 2 can be expanded and contracted. It is to make.
[0023]
The operation of the above configuration is as follows.
[0024]
By holding the outer pipe 1 and the dissociating body 3 provided on the outer periphery thereof with the hand, the dissociating body 3 moves in the E direction, the operating body 4 is pushed down by the inner wall of the dissociating body 3, and the claw portion 5 is provided in the inner pipe 2 By disengaging from 6, the fitting of the claw portion 5 and the recessed portion 6 is released, and the state shown in FIG.
[0025]
Example 4
Next, a fourth embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as the said Example, and the description is abbreviate | omitted. The dissociation body consisting of 7 and 8 on the outer circumference of the outer pipe 1 is divided into two parts with respect to the longitudinal axis, and is movable in the direction of arrow G by a gap g and further moved in the longitudinal direction of the outer pipe 1. ing.
[0026]
The operation of the above configuration is as follows.
[0027]
By moving the dissociating bodies 7 and 8 by the hand and moving in the direction of the arrow G by the gap g and pushing the operating body 4 to dissociate the claw part 5 from the engaging part 6 of the inner pipe 2, the claw part 5 and the recess 6 The inner pipe 2 can be expanded and contracted. Further, by providing it so as to move also in the axial direction of the outer pipe 1, it functions similarly to the first or second embodiment and can be easily expanded and contracted for a user having a weak gripping force.
[0028]
(Example 5)
Next, a fifth embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same component as the said Example, and the description is abbreviate | omitted. The operation portion 4a of the operation body 4 is provided on the inner pipe 2 side at the end of the outer pipe 1, and the claw portion 5 is provided on the hose connection side.
[0029]
The operation of the above configuration is as follows, and the operation portion 4a of the operation body 4 is provided on the inner pipe 2 side of the end portion of the outer pipe 1 and the claw portion 5 is provided on the hose connection side. The spring 10 and the operating body 4 are inserted from the side of the part, and the inner pipe 2 and the dissociating body 3 can be assembled by simply inserting from the end part side of the outer pipe 1 in the same manner. The assembly set between 1 and the inner pipe 2 is facilitated, and it is possible to provide an extension tube for a vacuum cleaner that is inexpensive, easy to extend and contract, and a vacuum cleaner using the extension tube. The expansion / contraction operation of the inner pipe 2 is the same as that of the second embodiment, and the inner pipe 2 can be expanded / contracted by moving the dissociator 3 in both the B direction and the C direction.
[0030]
【The invention's effect】
According to the first aspect of the present invention, when the extension tube for a vacuum cleaner is expanded and contracted, the operability of the release means is improved and the expansion and contraction operability is improved.
[0031]
Further, according to the first aspect of the present invention of the present invention, it is possible to release the engagement of the operating tool by moving the release means axially, usability is improved easily and more stretching operation.
[0032]
According to invention of Claim 2 of this invention, the end of the extension pipe for vacuum cleaners of Claim 1 is connected to the front-end | tip pipe of the hose connected with the vacuum cleaner main body which incorporates an electric blower, since the other end of the vacuum cleaner for the extension tube is adapted to receive a suction force of the cleaner body, can you to provide a user-friendly vacuum cleaner.
[Brief description of the drawings]
FIG. 1 is a perspective view of an extension pipe for a vacuum cleaner according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the main part of the extension pipe for the vacuum cleaner. FIG. 4 is a cross-sectional view of an essential part of an extension pipe for an electric vacuum cleaner showing an example. FIG. 4 is a side view of an essential part of an extension pipe for an electric vacuum cleaner showing a third embodiment of the present invention. -D sectional view (b) DD sectional view of FIG. 4 [FIG. 6] Cross sectional view of the main part of the extension pipe for the vacuum cleaner [FIG. 7] (a) Electric cleaning showing the fourth embodiment of the present invention. Side view of main part of extension pipe for machine (b) FF cross-sectional view of FIG. 8 (a) [FIG. 8] Cross-sectional view of main part of extension pipe for vacuum cleaner [FIG. 9] Fifth embodiment of the present invention Fig. 10 is a cross-sectional view of a main part of an extension pipe for an electric vacuum cleaner showing an example. Fig. 10 is an external perspective view of an extension pipe for an electric vacuum cleaner according to first and fifth embodiments of the present invention. [Fig.12] Conventional vacuum cleaner Cross sectional view of the extension tube 13 (a) partial side view of a main portion sectional view of another conventional example extension pipe of a vacuum cleaner (b) the vacuum cleaner for extension pipe [Description of symbols]
DESCRIPTION OF SYMBOLS 1 Outer pipe 2 Inner pipe 3 Dissociation body 4 Operation body 5 Claw part 6 Recessed part 7 Dissociation body 8 Dissociation body

Claims (2)

An outer pipe ,
An inner pipe having a plurality of recesses provided in the axial direction of the outer periphery, movable in the axial direction in the outer pipe ;
An operating body provided between an inner peripheral surface of an end portion of the outer pipe and an outer peripheral surface of the inner pipe, and provided with a claw portion that engages with a concave portion of the inner pipe ;
Disposed on the outer periphery of the outer pipe, and possess a canceling means for canceling the engagement with the recess of the pipe and the operating body,
The release means is arranged to be movable in the axial direction of the outer pipe, and the engagement between the operating body and the concave portion of the inner pipe is released along with the movement in the axial direction, and the release means Is arranged to be movable in a direction perpendicular to the axial direction of the outer pipe, so that the engagement between the operating body and the concave portion of the inner pipe is released in accordance with the movement in the direction perpendicular to the axial direction. <br/> for an electric vacuum cleaner extension pipe is configured. Has a cleaner main body incorporating a motor-driven blower, the pipe end of the hose connected to the cleaner body, connecting one end of the vacuum cleaner for extension pipe of claim 1, the extension the vacuum cleaner An electric vacuum cleaner in which the other end of the tube receives the suction force of the main body of the vacuum cleaner.

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