KR200232204Y1 - A metal extension pipe for vacuum cleaner - Google Patents

Abstract

The present invention relates to an extension pipe for a vacuum cleaner, the present invention is inserted into the inner pipe 10 and the lever body 30 fixed to the inside of the outer pipe 20, and coupled to the lever body 30 and the inner pipe A stopper 50 guided or caught by the guide groove 11 and the locking groove 12 of the 10, an elastic member 60 for applying a tension to the stopper 50, and the stopper 50 to move. It is composed of a lever 40, the inner pipe 10 can be moved or fixed only by the operation of the lever 40, it is possible to easily adjust the length of the extension tube 90 for the vacuum cleaner, the extension tube 90 It is a useful design that the configuration for adjusting the length of the simplification is provided, the effect is easy to assemble and operate.

Description

Extension tube for vacuum cleaner {A METAL EXTENSION PIPE FOR VACUUM CLEANER}

The present invention relates to an extension tube for a vacuum cleaner, and in particular, the coupling and separation of the extension tube is easy, the length of the extension tube can be easily adjusted, and the structure for adjusting the length of the extension tube to configure a relatively simple component manufacturing process and failure frequency It relates to an extension tube for a vacuum cleaner that can lower the.

In general, the vacuum cleaner is configured to suck and remove foreign substances such as dust, the extension tube of such a vacuum cleaner is configured to adjust the length of most.

However, since the extension tube of the vacuum cleaner was configured to be separated into a plurality of coupling tubes that can be simply combined, the user could adjust the length of the extension tube by selecting and connecting the quantity of the connection tubes, respectively, but the structure of the extension tube is the user. Was unable to select the appropriate length of extension tube desired, and there were inconveniences in the combination, separation and operation.

In addition, it was possible to adjust the length of the extension pipe by laying a number of parts in the connection portion of the extension pipe, the structure of the confinement and release means for adjusting the length was a frequent failure.

This problem could be somewhat solved by the vacuum cleaner metal extension tube disclosed in the Utility Model Registration Application No. 98-2366 filed by the applicant of the present application, but the vacuum tube metal extension tube disclosed in the Utility Model Registration Application No. 98-2366 As shown in Figures 1 and 2, the structure is complicated, there was a problem that the length adjustment is inconvenient.

That is, the extension pipe 100 has a plurality of inner grooves 200a formed at a plurality of engaging grooves 200a in the longitudinal direction on the outer circumferential surface thereof, and a stopper 400a at one end thereof so as to be caught by the engaging grooves 200a. A lock end 400b having an incision formed and rounded corners to the left and right sides thereof is formed to be incised so that the lever body 400 is inserted into the circumference of the inner tube 200 so as not to be rotatable, and the stopper 400a protrudes. A stopper escape groove 830 is formed in the expansion pipe fixing portion 850 in front of the outer tube 900 which is coupled to expose the lock end 400b around the lever body 400, and the lock end 400b. The lock groove 520 having a stepped 520a rounded in one direction is formed at left and right sides of the one end so that the locking and release are performed, and the stopper rail groove is formed at the inner circumference at one end thereof. It is composed of a lever 600 that can be rotated to be fitted to the extension pipe (1) 00 to adjust the length to a desired length, the user grabs the lever 600, exerts an external force in one direction, pulls the outer tube 900 from the inner tube 200 in one direction to adjust the length, and then again the lever 600. ) Had to be rotated again in the other direction was inconvenient.

The extension pipe 100 configured as described above was inconvenient to rotate the lever 600 in both directions in order to adjust the length desired by the user, and the workability of manufacturing each part was reduced due to its complicated structure. It was an inconvenience in use.

The present invention is devised to solve the problems of the prior art, the technical problem of the present invention is easy to combine and separate the extension tube, can easily adjust the length of the extension tube, the structure of adjusting the length of the extension tube It is to provide an extension tube for the vacuum cleaner that can reduce the manufacturing process and the frequency of failure by configuring a simple component.

Technical problem as described above is formed so that a plurality of engaging grooves are formed on the outer circumferential surface in the longitudinal direction to communicate with one side of the engaging grooves, the inner pipe formed with a guide groove, and is fitted to fit in the longitudinal direction with the inner pipe. A coupling part having a through hole is formed at one end thereof, and a support long hole is formed at both sides of the through hole, and an outer pipe having a locking hole formed at opposite sides of the through hole, and fitted into the inner pipe to have a length along a guide groove; Guide protrusions are formed on the inner circumferential surface to move in a direction, a first fitting groove is formed on one side of the outer circumference, a guide rail having a locking jaw is formed on the center of the outer circumferential surface, and the locking hole is coupled to the outer pipe on one side of the outer circumferential surface. A lever body having a locking portion fitted therein, and engaging on both sides of the inner surface so as to be seated and moved on the locking jaw of the guide rail; The stopper is formed, the locking portion is seized to be caught in the locking groove of the inner pipe on one side of the inner side, a second fitting groove is formed on one side of the outer side, the stopper perforated each hole having a step on the other side, An elastic member having one end fixed to the first fitting groove of the lever body coupled to the inner pipe and the second fitting groove of the stopper coupled to the guide rail of the lever body to impart tensile force to the stopper; An obturation protrusion is formed on one side of the inner surface of the packing to be tightly fitted to one end of the inner pipe so as to maintain the airtightness between the outer pipe and the inner side of the inner pipe so as to be caught and fixed to a step formed in each hole of the stopper. On both sides of the locking projections are provided with levers which are supported by protrusions which are guided by being inserted into the support holes of the outer pipe. It can be achieved by providing an extension tube for a vacuum cleaner, characterized in that.

The packing is formed in an annular shape on one end outer peripheral surface having an elastic wing-shaped wing that is in close contact with the inner peripheral surface of the outer pipe to maintain the airtight between the inner pipe and the outer pipe, the inner peripheral surface guide groove of the inner pipe It is characterized in that the assembly is formed to protrude to be coupled to.

1 is an exploded perspective view showing an extension tube for a vacuum cleaner according to the prior art.

Figure 2 is a longitudinal cross-sectional view showing a coupling state of the extension tube for vacuum cleaner shown in FIG.

Figure 3 is an exploded perspective view showing an extension tube for a vacuum cleaner according to the present invention.

4 is a cross-sectional view showing main parts of the lever and stopper shown in FIG. 3, 4a is a cross-sectional view taken along the line A-A of FIG. 3, and 4b is a cross-sectional view taken along the line B-B.

5 is a longitudinal sectional view showing a state in which the extension tube for the vacuum cleaner shown in Figure 3 is operated in operation, 5a is a longitudinal sectional view showing a state before operation, 5b is a longitudinal sectional view showing a state after operation.

<Description of the symbols for the main parts of the drawings>

10: inner pipe 11: guide groove

12: locking groove 20: outer pipe

21: through part 22: coupling part

23: support chapter 24: locking hole

30: lever body 31: guide rail

32: first fitting groove 33: guide protrusion

34: locking part 35: locking jaw

40: lever 41: obstruction

42: support protrusion 50: stopper

51: second fitting groove 52: each hole

53: locking portion 54: locking end

55: step 60: elastic member

70: packing 71: wing

72: assembly

Preferred embodiments of the present invention having the features as described above will be described in detail with reference to the accompanying drawings.

When described in detail based on Figures 3 to 4a and 4b of the accompanying drawings as follows.

As shown in the accompanying drawings, the subject innovation is the inner pipe 10, the outer pipe 20, the lever body 30 is coupled to the inner pipe 10, and is coupled to the lever body 30 On the inner pipe 10 so as to maintain the airtightness of the stopper 50, the elastic member 60 installed on the stopper 50 and the lever body 30, and the inner pipe 10 and the outer pipe 20. The packing 70 is installed, and the lever 40 is coupled to the stopper 50 through the outer pipe 20.

Each of these components will be described in more detail as follows.

The inner pipe 10 has a plurality of catching grooves 12 formed on the outer circumferential surface in the longitudinal direction, and guide grooves 11 are formed in communication with one side of the catching grooves 12.

The outer pipe 20 is formed to be fitted in the longitudinal direction with the inner pipe 10, the coupling portion 22 having a through-hole 21 is formed at one end, both sides of the through-hole 21 The support hole 23 is formed, and the locking hole 24 is formed on the opposite side of the through hole 21.

The lever body 30 is inserted into the inner pipe 10, the guide protrusion 33 is protruded on the inner peripheral surface to move in the longitudinal direction along the guide groove 11, the first fitting groove 32 is formed on one side of the outer peripheral surface A guide rail 31 having a locking jaw 35 is formed at the center of the outer circumferential surface, and the locking is fitted to the locking hole 24 of the outer pipe 20 so as to be coupled to the outer pipe 20 at one side of the outer circumferential surface. A portion 34 is formed.

The stopper 50 has a locking end 54 formed on both sides of the inner surface so as to be seated on the locking jaw 35 of the guide rail 31, and the locking groove of the inner pipe 10 is formed at one side of the inner surface. 12) the engaging portion 53 which is seated on the projection is protruding, the second fitting groove 51 is formed on one side of the outer side, the corner hole 52 having a stepped 55 is drilled on the other side.

The elastic member 60 of the stopper 50 coupled to the first fitting groove 32 of the lever body 30 coupled to the inner pipe 10 and the guide rail 31 of the lever body 30. Each end is fixed to the second fitting groove 51 and is formed to impart a tensile force to the stopper 50.

The elastic member 60 is preferably composed of a tension spring.

The packing 70 is pressed into one end of the inner pipe 10 to maintain the airtight between the inner pipe 10 and the outer pipe 20, the inner pipe 10 and the outer pipe 20 A trumpet-shaped wing 71 in close contact with the inner circumferential surface of the outer pipe 20 has an elastic shape and is formed in an annular shape at one end of the outer circumferential surface to maintain the airtight therebetween, and a guide groove of the inner pipe 10 is formed at one side of the inner circumferential surface. Assembled portion 72 is formed to protrude to be coupled to (11).

The lever 40 is inserted from the outside of the through-hole 21 of the outer pipe 20, the locking protrusion 41 on one side of the inner surface to be caught and fixed to the stepped 55 formed in the angle hole 52 of the stopper 50 ) Is formed to protrude, and the support protrusions 42 which are inserted and guided to the support hole 23 of the outer pipe 20 are protruded on both sides of the locking protrusion 41.

Referring to the coupling relationship of the present invention configured as described above in detail as follows.

As shown in the drawing, the lever body 30 is coupled to the inner pipe 10, and the guide protrusions 33 are fitted to the guide grooves 11 of the inner pipe 10 to be coupled to each other.

When the lever body 30 is coupled to the inner pipe 10, the packing 70 is forcibly fitted to one end of the inner pipe 10. At this time, the fitting portion 72 protruding from the inner circumferential surface of the packing 70 is preferably fitted in a state that is fitted to the guide groove 11, a plurality of annular projections in the fitting portion of the packing 70 It is preferable to form or to form a coupling protrusion so as not to be separated from the inner pipe (10).

When the lever body 30 and the packing 70 are coupled to the inner pipe 10, the stopper 50 is fitted to the guide rail 31 of the lever body 30.

At this time, the locking end 54 formed on both sides of the inner surface of the stopper 50 is seated on the locking jaw 35 of the guide rail 31, and the locking portion 53 is caught by the inner pipe 10. Coupling with each other to be seated in the groove (12).

When the stopper 50 is coupled to the lever body 30, one end of the elastic member 60 is fixed to the second fitting groove 51 of the stopper 50, and the other end is connected to the lever body 30. It is fixed to the formed first fitting groove 32 so that the stopper 50 receives a tensile force toward the first fitting groove 32. This is to maintain the state in which the locking portion 53 is always inserted into the locking groove 12 when no external force is applied to the stopper 50.

In such a state, the inner pipe 10 is fitted into the outer pipe 20 so that the lever body 30 and the stopper 50 are coupled to the coupling portion 22 of the outer pipe 20. On the side.

That is, the angle hole 52 of the stopper 50 is matched with the through-hole 21 formed in the coupling portion 22 so that the angle hole 52 is visible from the outside.

At this time, the locking portion 34 formed in the lever body 30 is fitted to the locking hole 24 formed in the outer pipe 20 to be coupled to each other. This is to allow the inner pipe 10 to flow in the inner diameter of the lever body 30, the lever body 30 and the outer pipe 20 is to be fixed.

Subsequently, the locking protrusion 41 of the lever 40 is inserted into the through hole 21 so that the locking protrusion 41 is caught by the stepped portion 55 formed in each hole 52 of the stopper 50. As described above, the locking protrusion 41 is caught by the step 55 and the support protrusions 42 formed on both sides of the locking protrusion 41 of the lever 40 support the support holes of the outer pipe 20. 23). At this time, the locking protrusion 41 is formed so that the locking piece having elasticity is opened to both sides so that the locking piece is caught on the stepped 55.

In this way, the lever 40 is coupled to the hook 55 of the stopper 50 through the through-hole 21 of the outer pipe 20 so that the inner pipe 10 and the outer pipe 20 and the lever The mutual coupling of components such as the main body 30 and the stopper 50, the elastic member 60, and the packing 70 is completed.

When described in detail based on the attached to the operation of the present invention is configured as described above with reference to Figure 5a and 5b as follows.

Figure 5a of the accompanying drawings shows an initial state in which each component of the present invention is coupled. As shown, the stopper 50 of the stopper 50 is the locking groove of the inner pipe 10 because the stopper 50 is pulled in the direction of the arrow C by the tensile force of the elastic member 60. It remains in the state seated at (12). Therefore, the movement of the inner pipe 10 and the outer pipe 20, that is, it is impossible to adjust the length of the extension pipe (90).

In other words, the lever 40 is coupled to the stopper 50 of the lever body 30 coupled to the inner pipe 10 through the through-hole 21 of the outer pipe 20, and the stopper ( Since 50 is seated and fixed in the locking groove 12 of the inner pipe 10, the movement in the longitudinal direction of the inner pipe 10 is prevented.

In this state, in order to adjust the length of the extension pipe 90 by moving the inner pipe 10 in the longitudinal direction, the user first pulls the lever 40 in the direction of the arrow D, as shown in FIG. 5B. .

When the lever 40 is pulled in the direction of the arrow D, one end of the lever member 30 is fixed to the first fitting groove 32 of the lever body 30 while the engaging portion 53 is tensioned. The stopper 50 moves in the direction of the arrow D while being separated from the locking groove 12 of the inner pipe 10. Therefore, the movement in the longitudinal direction of the inner pipe 10 becomes possible.

That is, when the locking portion 53 of the stopper 50 is separated from the locking groove 12, the locking portion 53 is movable in the longitudinal direction from the guide groove 11 of the inner pipe 10, The inner pipe 10 is to be movable without interfering with other components.

At this time, the packing 70 fitted to one end of the inner pipe 10 has an annular wing 71 having its own elasticity on its outer circumferential surface so that the inner pipe 10 can be moved. At this time, the blade 71 is in close contact with the inner circumferential surface of the outer pipe 20 that the dust or foreign matter passing through the inner pipe 10 leaks to the connection between the inner pipe 10 and the outer pipe 20. Will be prevented.

When the length of the extension tube 90 is adjusted in this state, the force pulling the lever 40 is removed. When the force pulling the lever 40 is removed, the lever 40 and the stopper 50 are returned to their original state by the tensile force of the elastic member 60, and the locking portion 53 is stopped. It is inserted into the locking groove 12 of the caught.

That is, when the external force pulling the lever 40 is removed, the lever 40 is moved by the tensile force of the elastic member 60 in the direction of the arrow E shown in FIG. 5B, and thus, the The locking portion 53 of the stopper 50 moves from the guide rail 31 of the lever body 30 to be seated in the locking groove 12 of the inner pipe 10, so that the movement of the inner pipe 10 is stopped. To be prevented.

In other words, as the user simply operates the lever 40, the inner pipe 10 can be moved, and thus the length of the extension pipe 90 can be easily adjusted.

An extension tube for a vacuum cleaner according to the present invention includes a lever body fitted into an inner pipe and fixed to an inner side of an outer pipe, a stopper coupled to the lever body and guided or caught by a guide groove and a locking groove of the inner pipe, and a tension force to the stopper. It is composed of an elastic member for imparting and a lever for moving the stopper, the inner pipe can be moved or fixed only by the operation of the lever can be easily adjusted the length of the extension tube for the vacuum cleaner, the length of the extension tube The configuration is simplified for easy assembly and operation.

Claims (2)

An inner pipe 10 having a plurality of locking grooves 12 formed on the outer circumferential surface thereof in a longitudinal direction and communicating with one side of the locking grooves 12 to form a guide groove 11; The inner pipe 10 is formed to be fitted in the longitudinal direction, the coupling portion 22 having a through portion 21 is formed at one end, the support hole 23 is formed on both sides of the through portion 21 An outer pipe 20 having a locking hole 24 formed at an opposite side of the through hole 21; Guide protrusions 33 protrude from the inner circumferential surface so as to be inserted into the inner pipe 10 and move in the longitudinal direction along the guide groove 11, and a first fitting groove 32 is formed at one side of the outer circumferential surface, and the locking jaw at the center of the outer circumferential surface thereof. A lever body 30 having a guide rail 31 having a 35 and a locking part 34 fitted to the locking hole 24 to be coupled to the outer pipe 20 on one side of an outer circumferential surface thereof; The locking end 54 is formed on both inner side surfaces of the guide rail 31 so as to be seated and moved, and the inner side surface of the guide rail 31 is seated in the locking groove 12 of the inner pipe 10. A stopper 50 in which the engaging portion 53 is protruded, the second fitting groove 51 is formed at one side of the outer surface, and the hole 52 is provided with the stepped 55 at the other side of the outer surface; The first fitting groove 32 of the lever body 30 coupled to the inner pipe 10 and the second fitting groove 51 of the stopper 50 coupled to the guide rail 31 of the lever body 30. One end is fixed to the elastic member 60 to impart a tensile force to the stopper 50; A packing 70 pressed into one end of the inner pipe 10 to maintain airtightness between the inner pipe 10 and the outer pipe 20; And The locking protrusion 41 is protruded from one side of the inner surface of the outer pipe 20 so as to be caught from the through hole 21 of the outer pipe 20 so as to be caught and fixed to the stepped portion 55 formed in the angle hole 52 of the stopper 50. Both sides of the locking protrusion 41, the extension pipe for the vacuum cleaner, characterized in that composed of a lever (40) protruding the support protrusion 42 is inserted into the guide support hole (23) of the outer pipe (20). The trumpet-shaped wing 71 of claim 1, wherein the packing 70 is in close contact with an inner circumferential surface of the outer pipe 20 so as to maintain the airtightness between the inner pipe 10 and the outer pipe 20. It is provided with an annular shape on one end of the outer peripheral surface, the extension pipe for the vacuum cleaner, characterized in that the assembly portion 72 is protruded to be fitted to the guide groove 11 of the inner pipe 10 on one side of the inner peripheral surface.