KR20170141014A - A length control device for a telescopic extensionpipe of vacuum cleaner - Google Patents

Abstract

The present invention provides a device for adjusting the length of a suction tube of a vacuum cleaner in which the number of components used in the device is reduced to simplify a configuration, such that multiple assembly processes can be omitted, thereby enhancing productivity. The device for adjusting the length of a suction tube of a vacuum cleaner is disposed between an inner pipe having multi-layered coupling grooves formed on one side thereof and an outer pipe with an expansion unit having an opening formed on an upper end to which the inner pipe is inserted and coupled, such that the entire length is extended by the operation of a user. The device comprises: a tubular base with a cutout portion formed in correspondence with the opening; a fixing plate having a through hole formed at a center thereof, a guide rail vertically formed on the outer surface thereof, and a support formed on an upper end thereof; a stopper projection selectively coupled to one among the multi-layered coupling grooves of the inner pipe; a vertical movement plate having a pressing surface and an accommodation groove with respect to the stopper projection sequentially formed on the inner surface thereof and vertical movement guiding grooves formed on both sides of the outer surface thereof; an elastic spring elastically deflecting the vertical movement plate in a downward direction; a finishing cover having a guide hole formed therethrough to be in correspondence with the vertical movement guide groove; and a push button provided with a pressing projection formed on the inner surface thereof, wherein the pressing projection passes through the guide hole and is press-fitted into the vertical movement guide grooves when being pressed such that the vertical movement plate is moved in an upward direction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vacuum cleaner,

The disclosed subject matter relates to a vacuum cleaner suction tube length adjuster.

Unless otherwise indicated herein, the description set forth in this identification section is not prior art to the claims of this application and is not to be construed as prior art as described in this identification section.

Generally, a vacuum cleaner is provided with a length adjusting device for adjusting the length of a suction pipe (pipe).

The length adjuster generally includes an outer pipe connected to the outside of the inner pipe connected to the main body of the vacuum cleaner and a length adjusting device coupled to one end of the inner pipe, And the entire length of the suction pipe is adjusted while moving.

For example, the above-described vacuum cleaner suction pipe length adjusting device is disclosed in Korean Utility Model Registration No. 0209745 and No. 0213136 registered by Wyes Tech Co., Ltd., the applicant of the present specification.

In these conventional length adjusting devices, a stopper is integrally formed in a guide pipe, and the length thereof is adjusted by engaging and disengaging the latching grooves of the inner pipe.

The length of the suction pipe is controlled by inserting and releasing the stopper into the engagement groove of the inner pipe according to the movement of the adjustment knob. In the conventional length adjusting device, the adjustment knob is assembled by the caps on both sides, And is engaged with and released from the engagement groove of the inner pipe through the guide hole formed in the guide pipe inside the adjustment knob. As described above, the length adjustment device of the conventional suction pipe including many components such as the adjustment knob, the cap, the stopper, the guide tube, and the guide hole on both sides requires a number of components and a multi- Factor.

Particularly, in the conventional length adjusting device, the cap is connected to both sides of the adjusting knob in order to install the spring for operating the adjusting knob in an elastic manner. When such a cap is used, an additional assembling process is required. It is not easy to assemble and fix the cap to both sides of the adjusting knob by the repulsive force of the adjusting knob.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vacuum cleaner suction pipe length adjusting device in which the number of parts is reduced to simplify the construction, thereby eliminating the assembly process of multiple processes and increasing the productivity.

Further, it is an object of the present invention to provide a vacuum cleaner suction pipe length adjusting device which can quickly and easily expand or contract the entire length of the suction pipe, and the length of the stretchable and regulated suction pipe can be held constant.

It is obvious that the present invention is not limited to the above-described technical problems, and another technical problem may be derived from the following description.

According to a preferred embodiment of the present invention, an inner pipe having a multi-stage coupling groove formed at one side thereof and an outer pipe having an expansion pipe having an opening at an upper end side to which the inner pipe is inserted is inserted, A vacuum cleaner suction pipe length adjusting device for a vacuum cleaner suction pipe length adjusting device, comprising: a tubular base fitted in an expanded portion of the outer pipe and having a cutout corresponding to the opening; A fixing plate having one end fixed to the fixing plate and the other end fixed to the fixing plate and inserted into the through hole so as to be inserted into the through hole, A stopper projection selectively engaged with one of the multi-stage engagement grooves of the pipe A vertically moving plate coupled to the guide rail of the fixed plate so as to be slidable in the up and down direction and having a pressing surface and a receiving groove continuously formed on the inner surface of the guide rail and having upward movement guide grooves formed on both sides of the outer surface, An elastic spring interposed between a pedestal of the fixed plate and an upper end of the up-and-down moving plate for elastically biasing the up-and-down moving plate in a downward direction, and an elastic spring coupled to the outer pipe to be covered on the fixed plate, The upper cover being elastically biased outwardly on the outer surface of the finishing cover and being pressed through the guide hole when pressurized and being press-fitted into the upward movement guide groove, And a push button provided with a pushing projection The vacuum cleaner suction pipe length adjusting apparatus as claimed are present.

The stopper protrusion may be configured to be rotatably coupled to the fixing plate.

And an inclined portion may be formed at the lower end of the upward movement guide groove and the pressing projection.

And an inclined surface 43a may be formed between the pressing surface 42 and the receiving groove 43.

And an elastic spring is coupled between the finish cover and the push button.

As described above, the vacuum cleaner suction pipe length adjusting device has a simplified configuration by reducing the number of parts, thereby eliminating the assembly process of multiple processes and increasing the productivity. Therefore, when the push button is pressed by the user, Can be quickly and easily extended or contracted, and the length of the stretching and regulating suction pipe can be kept fixed.

1 is a perspective view of a vacuum cleaner suction pipe according to an embodiment.
2 is a detailed view of a main portion of a vacuum cleaner suction pipe according to an embodiment.
3 is an exploded perspective view of a vacuum cleaner suction pipe length adjusting device according to an embodiment.
4 is a rear exploded perspective view of a vacuum cleaner suction pipe length adjusting device according to an embodiment.
5 is a view illustrating a length adjusting operation of the vacuum cleaner suction pipe length adjusting device according to the embodiment.

Hereinafter, the configuration, operation, and effects of the vacuum cleaner suction pipe length adjusting device according to the preferred embodiment will be described with reference to the accompanying drawings. For reference, in the following drawings, each component is omitted or schematically shown for convenience and clarity, and the size of each component does not reflect the actual size, and the same reference numerals denote the same components throughout the specification. And reference numerals for the same components in individual drawings are omitted.

FIG. 1 is a perspective view of a vacuum cleaner suction pipe according to an embodiment of the present invention, and FIG. 2 is a detailed view of a main part of a vacuum cleaner suction pipe according to an embodiment.

1 and 2, an inner pipe 3 is coupled to an outer pipe 5, as shown in FIG. 1 and FIG. 2, according to an embodiment of the present invention. An expanded portion 5b is formed at the upper end of the outer pipe 5 and the inner pipe 3 is inserted and coupled through the tubular base 10. [ The inner pipe 3 has a multistage coupling groove 3a on one side and a finishing cover 60 and a push button 70 on the outside of the expansion portion 5b. This allows the length of the vacuum cleaner suction line to be adjusted.

FIG. 3 is an exploded perspective view of a vacuum cleaner suction pipe length adjusting device according to an embodiment of the present invention, and FIG. 4 is a rear exploded perspective view of a vacuum cleaner suction pipe length adjusting device according to an embodiment.

3 to 4, the vacuum cleaner suction pipe length adjusting device according to the embodiment includes a tubular base 10, a fixing plate 20, a stopper protrusion 30, a vertical moving plate 40, (50), a finishing cover (60), and a push button (70).

The tubular base 10 includes a cut-out portion 11 which is fitted into the expanded portion 5b of the outer pipe 5 and corresponds to the opening portion 5a. The tubular base 10 is inserted between the inner pipe 3 and the outer pipe 5 so that the fixing plate 20 is interposed therebetween.

The stationary plate 20 is seated between the cut-out portion 11 formed on one side of the tubular base 10 and the expanded portion 5b of the outer pipe 5. A through hole 21 is formed in the center of the fixing plate 20 and a guide rail 22 is formed on the outer side in the vertical direction and a pedestal 23 is formed on the upper side.

One end of the stopper projection (30) is coupled to the stationary plate (20). Preferably hingedly pivotable. The other end of the stopper projection 30 is inserted into the through hole 21 and selectively coupled to one of the multi-stage engagement grooves 3a of the inner pipe 3. [

The up-and-down moving plate 40 is slidably coupled to the guide rail 22 of the stationary plate 20 in the up-and-down direction. The stopper projection 30 is pressed or received in the pressing surface 42 and the receiving groove 43 continuously formed on the inner surface of the up-and-down moving plate 40 to enable the operation of the present invention.

Preferably, the gap between the pressing surface 42 and the receiving groove 43 is formed as an inclined surface 43a. This is for the stopper projection 30 to be engaged with the multi-stage engagement groove 3a as described below. The stopper protrusion 30 having one end coupled with the stationary plate 20 retains its position when the length adjustment of the present invention is stopped. However, when the up and down movement plate 40 moves downward, the stopper protrusion 30 passes through the inclined surface 43a, And is pressed against the pressing surface 42 to be engaged with the multistage coupling groove 3a.

 The up-and-down moving plate 40 includes upward movement guide grooves 41 on both sides of the outer side. Here, it is preferable that an inclined portion is formed at the lower end of the upward movement guide groove 41.

The elastic spring 50 is interposed between the pedestal 23 of the fixed plate 20 and the upper end of the vertical movement plate 40 to elastically bias the vertical movement plate 40 in the downward direction. The stopper projection 30 is normally pressed against the pressing surface 42 of the up-and-down moving plate 40 and is engaged with the multi-stage engaging groove 3a of the inner pipe 3.

A guide cover 61 is formed to correspond to the upward movement guide groove 41 in the finishing cover 60 which is coupled to the outer pipe 5 so as to be covered on the fixing plate 20. [

The push button 70 is elastically biased outwardly on the outer surface of the finish cover 60. The inner surface of the push button 70 includes a pressing protrusion 71 which penetrates through the guide hole 61 when pressed and is press-coupled to the upward movement guide groove 41 and moves the up-and-down moving plate 40 upward. Here, it is preferable that an inclined surface corresponding to the upward movement guide groove 41 is formed at the lower end of the pressing projection 71.

It is also preferable that an elastic spring 80 is coupled between the finishing cover 60 and the push button 70.

FIG. 5 is a view illustrating a length adjusting operation of the vacuum cleaner suction pipe length adjusting device according to an embodiment of the present invention. The operation of the present invention will now be described with reference to FIG.

In order to adjust the length of the vacuum cleaner suction pipe, the push button 70 must be pressed against the outer pipe 5 to grip the inner pipe 3 to manually move the pipe. The push button 70 is first pressed and the up and down moving plate 40 which is elastically deflected downward due to the relative action of the pressing protrusion 71 and the upward movement guide groove 41 is moved upward . The stopper protrusion 30 is coupled to the stationary plate 20 at one end thereof to maintain its position. However, the stopper protrusion 30 can enter the receiving groove 43 according to the relative movement of the up and down moving plate 40.

At this time, when the push button 70 is pressed and the outer pipe 5 and the inner pipe 3 are gripped and manually moved relative to each other, the stopper protrusion 30 is rotated by the counter- (3a) is released and deflected to the outside, so that it is seated in the receiving groove (43). Therefore, the length of the vacuum suction pipe can be adjusted while the push button 70 is pressed.

When the push button 70 is pressed, an elastic force such as an elastic spring for deflecting the stopper projection 30 to the outside may be applied to automatically release the engagement between the stopper projection 30 and the multi-stage engagement groove 3a have.

When stopping the adjustment of the length of the suction pipe of the vacuum cleaner, the outer pipe 5 and the inner pipe 3 are gripped and manually moved relative to each other while the push button 70 is stopped, Stage engaging groove 3a at the time of stopping the pressurization of the pressurizing member 70. When the pressing of the push button 70 is stopped, the pressing protrusion 71 is deflected outward by the elastic spring 80 between the push button 70 and the closing cover 60, The pressurization is stopped.

At this time, the outer pipe 5 and the inner pipe 3 are gripped and manually moved relative to each other while the push button 70 is stopped, so that any one of the stopper projection 30 and the multi- The stopper projection 30 seated in the receiving groove 43 can be engaged with the multi-stage engaging groove 3a and the vertically moving plate 40, which has received the elastic force in the downward direction, The pressing member 42 moves relative to the pressing surface 42 in the receiving groove 43 through the inclined surface 43a and is pressed by the pressing surface 42. [ Therefore, the stopper projection 30 pressed by the pressing surface 42 and the multi-stage engagement groove 3a are engaged and the vacuum cleaner suction pipe is fixed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken in conjunction with the present invention. It is to be understood that various equivalents and modifications may be substituted for those at the time of the present application. It is to be understood, therefore, that the above description is intended to be illustrative, and not restrictive, and that the scope of the present invention will be defined by the appended claims rather than by the foregoing description, All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

3: Inner pipe
3a: Multistage coupling groove
5: outer pipe
5a: opening
5b:
10: tubular base
11: Cutting section
20: Fixing plate
21: Through hole
22: Guide rail
23: Stand
30: Stopper projection
40: Up and down moving plate
41: Upward movement guide groove
42: Pressure face
43: receiving groove
43a:
50: Elastic spring
60: Finishing cover
61: guide ball
70: Push button
71: pressing projection
80: Elastic spring

Claims (5)

An outer pipe 5 having an inner pipe 3 having a multi-stage engagement groove 3a formed at one side thereof and an expanded portion 5b having an opening 5a formed at an upper end thereof to which the inner pipe 3 is inserted, ; A vacuum cleaner suction pipe length adjusting device disposed between the vacuum cleaner suction pipe length adjusting device and the vacuum cleaner suction pipe length adjusting device,
A tubular base 10 fitted into the expanded portion 5b of the outer pipe 5 and having a cut-out portion 11 corresponding to the opening 5a;
A through hole 21 is formed at the center and a guide rail 22 is formed at the outer side in a vertical direction so as to be inserted into the cutout portion 11, A stationary plate 20 having a pedestal 23 formed at an upper end thereof;
A stopper protrusion 30, one end of which is coupled to the fixing plate 20 and the other end thereof is inserted into the through hole 21 and selectively coupled to one of the multi-stage coupling grooves 3a of the inner pipe 3;
A pressing surface 42 and a receiving groove 43 are continuously formed on the inner side surface of the guide rail 22 of the fixing plate 20 so as to be vertically slidable on the guide rail 22, A vertical moving plate 40 on which the upward movement guide groove 41 is formed;
An elastic spring 50 interposed between the pedestal 23 of the fixed plate 20 and the upper end of the up and down movement plate 40 to elastically bias the up and down movement plate 40 in a downward direction;
A finishing cover 60 coupled to the outer pipe 5 so as to be covered on the fixing plate 20 and having a guide hole 61 formed therein so as to correspond to the upward movement guide groove 41; And
The upper and lower moving plates 40 are coupled to the outer surface of the finishing cover 60 so as to be elastically biased outwardly. The inner side surface of the closing cover 60 penetrates through the guide hole 61 when pressed, A push button 70 having a pushing protrusion 71 for upwardly moving the push button 70;
Wherein the vacuum cleaner suction pipe length adjusting device comprises:
The method according to claim 1,
Wherein the stopper projection (30) is rotatably coupled to the fixing plate (20).
The method according to claim 1,
Wherein the inclined portion is formed at a lower end of the upward movement guide groove (41) and the pressing projection (71).
The method according to claim 1,
Wherein an inclined surface (43a) is formed between the pressing surface (42) and the receiving groove (43).
The method according to claim 1,
Wherein an elastic spring (80) is coupled between the finishing cover (60) and the push button (70).

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