KR20060083095A - Refractive extension tube for vacuum cleaner - Google Patents

Abstract

Disclosed is a refractory extension tube for a vacuum cleaner capable of refracting the extension tube as required by a user. Refractive extension tube for vacuum cleaner according to the present invention, the first extension tube having a joint; A second extension tube having a joint accommodation portion into which the joint portion of the first extension tube is inserted; An airtight cover surrounding the first and second extension tubes; And a locking button installed between the airtight cover and the first extension pipe and having at least one engaging protrusion on an outer circumferential surface thereof, wherein at least one of the airtight cover and the first or second extension pipe includes: At least one coupling groove into which the locking projection of the locking button is selectively inserted may be formed to be rotated with respect to the second extension tube. In addition, the sealing cover further includes a wheel that can be rolled in contact with the surface to be cleaned, wherein the outer peripheral surface of the wheel is characterized in that the melting is installed.

Vacuum cleaner, first extension tube, second extension tube, coupling protrusion, first, second and third coupling grooves, wheel, melting

Description

Extension Pipe Having Joint For Vacuum Cleaner}

1 is a perspective view showing a first embodiment of the refractive extension tube of the present invention;

2 is an exploded perspective view of the refractive extension tube of FIG. 1;

3 is a perspective view illustrating a rear surface of the first sealing cover of FIG. 2;

Figure 4a is a view showing a coupling relationship between the first, second, third coupling groove and the coupling projection before the refraction of the first extension tube,

4B is a cross-sectional view of the main portion of FIG. 4A;

5A is a view illustrating a coupling relationship between first, second, and third coupling grooves and coupling protrusions after the deflection of the first extension tube;

5B is a cross-sectional view of the main portion of FIG. 5A;

Figure 6 is a perspective view showing a second embodiment of the present invention, the extension tube

7 is a perspective view illustrating a vacuum cleaner employing the refractive extension tube of FIG. 6.

<Description of Symbols for Major Parts of Drawings>

100 .. Refractive extension pipe 110 .. 1st extension pipe

112 .. The second coupling groove 114. The third coupling groove

115 .. 1st seating groove 120 .. 2nd extension officer

130. Airtight cover 131. First cover

132..Second cover 131a..Button hole

131c .. First engaging groove 140 .. Locking button

141.Pressure part 142

143 .. The binding protrusion 143a. The first binding protrusion

143b .. Second engaging protrusion 150 .. Elastic member

160..Wheel 170..Jung

J1, J2; Cylindrical Joints and Joint Receptacles

The present invention relates to a vacuum cleaner, and more particularly, to an extension tube for a vacuum cleaner that can conveniently clean the space under the furniture such as a bed, sofa.

In general, the vacuum cleaner is composed of a main body, a suction source provided in the main body to generate a suction force, a waste collection chamber in which the waste provided in the main body is collected, a suction brush in contact with the surface to be cleaned, and an extension passage connecting the main body and the suction brush. The extension passage may be provided in various ways according to the type of vacuum cleaner. In general, the canister vacuum cleaner includes a flexible hose connecting the main body and the operation handle, and an extension pipe connecting the operation handle and the suction brush. .

In order to clean the space under the furniture such as a bed or sofa with a vacuum cleaner as described above, the user should put the suction brush in the space under the furniture and lay down the extension tube while bending or lowering the posture to lay down the extension tube. . This causes a problem that the user's cleaning posture is inconvenient for cleaning the space under the furniture such as a bed or sofa.

On the other hand, in order to solve this problem, it is installed between the lower extension tube, the upper extension tube, the lower extension tube and the upper extension tube as disclosed in the Korean Patent Registration (10-0451728) and the joint portion, the joint portion to allow the lower extension tube to be folded at a predetermined angle An articulated extension tube for a vacuum cleaner including a locking adjustment means for adjusting to be folded as was developed.

However, since the retractable extension tube maintains the unrefractive state by one locking projection when the refraction extension tube is not refracted, refraction may be released during use.

In addition, it is inconvenient for the user to operate the pull control means to bend and release the locking adjustment means to deflect the lower extension tube, there is a problem that there is a locking impact due to the locking projection in the process of the lower extension tube is extended.

In addition, when cleaning the lower space of the furniture with the retracted extension tube, the refraction portion may come into contact with the surface to be cleaned, the refractive portion and the surface to be cleaned may be damaged by friction, the friction is not easy to move the suction brush. there was.

The present invention has been made to solve the above problems,

An object of the present invention is to provide an extension tube for the vacuum cleaner is simple configuration of the refraction of the extension tube, the structure is maintained in the fastening between the extension tube when the refraction is not simple.

Another object of the present invention is to provide a vacuum tube extension tube for preventing the damage of the refracted portion and the surface to be cleaned by mutual friction, and easy movement of the suction brush when cleaning the lower space of the furniture with the refracted extension tube.

Refractive extension tube for vacuum cleaner according to the present invention for solving the above problems, the first extension tube having a joint; A second extension tube having a joint accommodation portion into which the joint portion of the first extension tube is inserted; An airtight cover surrounding the first and second extension tubes; And a locking button installed between the airtight cover and the first extension pipe and having at least one engaging protrusion on an outer circumferential surface thereof, wherein at least one of the airtight cover and the first or second extension pipe includes: At least one coupling groove into which the locking projection of the locking button is selectively inserted may be formed to be rotated with respect to the second extension tube.

Here, it is preferable to further include an elastic member provided between the locking button and the first extension tube to elastically press the locking button in a direction away from the first extension tube. In addition, it is preferable that a button hole is formed in the sealing cover to protrude a portion of the locking button.

Preferably, the coupling grooves are spaces formed between the airtight cover and the plurality of protrusions protruding from the first extension tube, and the coupling grooves may include a first coupling groove formed on a button hole circumference of the sealing cover. Preferably, the first coupling groove includes a second coupling groove and a third coupling groove formed at a position corresponding to the first coupling groove. Here, the third coupling groove is preferably formed by a plurality of linear projections.

In addition, the sealing cover, it is preferable to further include a wheel that can be rolled in contact with the surface to be cleaned. Here, it is preferable that fusion is provided on the outer peripheral surface of the wheel.

Hereinafter, the refractive extension tube for the vacuum cleaner according to the first embodiment will be described in detail with reference to the accompanying drawings.

1 and 2, the refractive extension tube 100 for a vacuum cleaner according to the first embodiment includes a first extension tube 110, a second extension tube 120, a sealing cover 130, and a locking button. 140 and an elastic member 150.

The first extension tube 110 has a cylindrical joint portion J1 inserted into the joint receiving portion J2 of the second extension tube 120.

The front surface of the joint portion J1 has a long hole 117 that can communicate with the suction port 121 even when the first extension tube 110 is refracted.

A second coupling groove 112 is formed at a position corresponding to the first coupling groove 131c of the first cover 131 on the side circumference of the joint part J1. The third coupling groove 114 is formed at a position corresponding to the first coupling groove 131c at the bottom of the side surface of the joint part J1.

The second coupling groove 112 is formed by a plurality of protrusions 111. That is, one second coupling groove 112 is formed by a pair of protrusions 111, and in this embodiment, all eight protrusions 111 are used to form four second coupling grooves 112. It became.

The third coupling groove 114 is formed by a plurality of linear protrusions 113. That is, one third coupling groove 114 is formed by a pair of linear protrusions 113, and in this embodiment, all four linear protrusions 113 are formed to form four third coupling grooves 114. Was used. In addition, a first seating groove 115 for seating the elastic member 150 is formed at the center of the side bottom of the joint part J1.

The second extension pipe 120 includes a joint accommodating part J2 having a shape corresponding to the cylindrical joint part J1 such that the cylindrical joint part J1 provided in the first extension pipe 110 is refractedly coupled thereto. do.

The front surface of the joint accommodating part J2 is formed with an oval cutout 122 and a connection part 123 connecting the cutout 122 and the open left side. Due to the cutout 122, the angle of refraction θ of the first extension tube 110 is limited. Then, the joint part J1 of the first extension pipe 110 is inserted into the joint accommodating part J2 in the arrow A direction through the connection part 123. Reference numeral 125 that is not described indicates a button for fastening or detaching another extension pipe to the second extension pipe 120.

The airtight cover 130 prevents suction loss between the connecting portions J1 and J2 of the first and second extension pipes 110 and 120 and prevents the locking button 130 from being separated. For this purpose, the sealing cover 130 is composed of first and second covers 131 and 132.

The first cover 131 and the second cover 132 are fastened with screws, and a first cutting portion 131d is formed at the first cover 131, and a second cutting portion 132d is formed at the second cover 132. . Even when the first cover 131 and the second cover 132 are coupled by the first cutting part 131d and the second cutting part 132d, the first extension tube 110 is shown as an arrow as shown in FIG. 5A. Can move in the A or B direction.

In the first cover 131, a button hole 131a for exposing the locking button 130 to the outside is penetrated to a size corresponding to an outer circumferential surface of the locking button 130.

Then, the first coupling groove 131c is formed on the circumference of the button hole 131a. The first coupling groove 131c is formed by a plurality of protrusions 131b. That is, one first coupling groove 131c is formed by a pair of protrusions 131b, and in this embodiment, all four protrusions 131b are used to form four first coupling grooves 131c. .

The protrusion 131b is stepped to form the friction part 131bb (see FIG. 3), and as shown in FIG. 5A, when the locking button 140 is pushed in the arrow P direction, the engaging protrusion 141 is provided. The upper surface 143aa of FIG. 2 may be slid while contacting the friction part 131bb.

Referring to FIG. 2, the locking button 140 includes a pressing part 141, a departure preventing part 142, and a coupling protrusion 143.

The pressing unit 141 is a portion that the user presses to push the locking button 140 with a circular protrusion inserted into the button hole 131a in the direction of the arrow B. FIG. A second seating groove 141a is formed on the rear surface of the pressing part 141 and the elastic member 150 is firmly supported at the center of the second seating groove 141a. One side of the elastic member 150 is formed cross-shaped projection (141aa) is formed.

The release preventing part 142 is a circular border surrounding the pressing part 141 which prevents the locking button 140 inserted into the button hole 131a from falling through the button hole 131a in the direction of the arrow B.

The coupling protrusion 143 is composed of a first coupling protrusion 143a and a second coupling protrusion 143b.

The first coupling protrusion 143a is a quadrangular protrusion formed on the circumference of the pressing portion 141 and the upper surface of the separation preventing portion 142. 4B and 5B, the first coupling protrusion 143a is inserted into the first coupling groove 131c when the locking button 140 is released, and then the locking button 140 is closed. When pushed, the first coupling groove 131c is separated.

The second coupling protrusion 143b is a rectangular protrusion that is slimmer than the first coupling protrusion 143a connected to the first coupling protrusion 143a. 4B and 5B, the second coupling protrusion 143b is inserted into the second coupling groove 112 when the locking button 140 is released and then pushes the locking button 140. (Push) is inserted into both the second coupling groove 112 and the third coupling groove 114.

When the second coupling protrusion 143b is pushed to be inserted into the third coupling groove 114, the first coupling protrusion 143a may be separated from the first coupling groove 131c, and thus, the first coupling protrusion 143b may be separated. Extension tube 110 becomes refracted.

On the other hand, as in the present embodiment, four such coupling protrusions 143 may be disposed radially about the pressing portion 141, but two may be arranged symmetrically if necessary.

Referring to FIG. 2, the elastic member 150 is a coil spring which is installed between the first seating groove 115 and the second seating groove 141a. The locking member 140 includes a first extension pipe 110. It presses in the arrow B direction which is a direction away from. After the locking button 140 is pushed by the elastic member 150, the locking button 140 may be automatically released when the pushing force is removed.

Hereinafter, the operation of the refractive extension tube 100 of the vacuum cleaner according to the first embodiment will be described.

4A is a view illustrating a coupling relationship between the first, second, and third coupling grooves 131c, 112, and 114 and the coupling protrusion 141 before the refractive of the first extension tube 110. 130 has been removed to leave only the portion where the first coupling groove (131c) is formed. 4B is a sectional view of the principal parts of FIG. 4A.

4A and 4B, when cleaning a general cleaning surface, for example, a floor, etc., the cleaning operation is performed in a state where the refractive angle θ (see FIG. 5A) is fixed to 0 degrees. At this time, the first coupling protrusion 143a is inserted into the first coupling groove 131c and the second coupling protrusion 143b is inserted into the second coupling groove 112. Therefore, even if the first extension tube 110 tries to deflect, the first coupling protrusion 143a is inserted into the first coupling groove 131c of the first cover 131 fixed to the first extension tube 110, and the arrow It is not refracted in the A direction.

5A is a view illustrating a coupling relationship between the first, second, and third coupling grooves 131c, 112, and 114 and the coupling protrusion 141 after the refraction of the first extension tube 110. The cover 130 was removed to leave only the portion where the first coupling groove 131c is formed. 5B is a cross-sectional view of the main portion of FIG. 5A.

Referring to FIGS. 5A and 5B, when cleaning the bed or sofa lower space, the user may conveniently clean the bed or sofa lower space by refracting the first extension pipe 110 in the direction of arrow A. FIG.

To this end, the user pushes the locking button 130 in the arrow P direction. When the locking button 130 is pushed in this manner, in the state shown in FIGS. 4A and 4B, as shown in FIGS. 5A and 5B, the first coupling protrusion 143a is separated from the first coupling groove 131c. And, the second coupling protrusion 143b is switched to the state inserted in both the second coupling groove 112 and the third coupling groove 114.

Referring to FIG. 5B, when the first coupling protrusion 143a is separated from the first coupling groove 131c, the upper surface 143aa of the first coupling protrusion 143a in the arrow E portion of FIG. 4A may be the friction portion 131bb. In contact with the arrow F of FIG. 5A. Therefore, as illustrated in FIG. 5A, the first extension pipe 110 may be refracted by the first cover 131 and may be refracted in the direction of arrow A.

For reference, the angle of refraction θ is preferably 45 degrees at maximum, and the size of the angle of refraction θ is the incision 122 (see FIG. 2) of the joint accommodating part J2 of the second extension pipe 120. Can be adjusted by

When the cleaning of the lower part of the furniture is finished, the first extension tube 110 is extended so that the refractive angle θ of the first extension tube 110 is 0 degrees for cleaning the floor. At this time, the user may hold the first extension tube 110 by hand and directly unfold it in the direction of the arrow B, but the first extension tube 110 is lifted to a certain height so that the second extension tube 120 falls by its own weight. One extension pipe 110 may be extended in the direction of the arrow B.

Thus, in the process of extending the first extension pipe 110, the engaging projection 143 located in the direction of arrow F of Figure 5a is moved to the position indicated by the arrow E of Figure 4a.

In this case, the locking button 140 is exposed out of the button hole 131a (see FIG. 2) by the elastic force of the elastic member 150 (see FIG. 2), and at the same time, the first coupling protrusion 143a is provided with the first coupling groove 131c. Is inserted back into the. Through this process, the first extension pipe 110 is opened.

Hereinafter, the refractive extension tube 200 according to the second embodiment as shown in FIGS. 6 and 7 will be described. For reference, the components of the second embodiment which have the same function as the first embodiment will be denoted by the same reference numerals as the first embodiment, and description thereof will be omitted.

Referring to FIG. 6, the sealing cover 130 further includes a wheel 160 that may roll in contact with the surface to be cleaned. The melt 170 is provided on the outer circumferential surface of the wheel 160.

Referring to FIG. 7, the wheel 160 is a wheel which is rotatably installed at the lower end of the airtight cover 130, and is made of rubber or urethane to roll smoothly without damaging the surface to be cleaned 10.

The wheel 160 rotates in the direction of arrow C when the user pushes the suction brush 20 in the direction of arrow A to the bent tube 200 to clean the surface to be cleaned 10, such as under furniture, and the suction brush 20. If you pull) in the direction of arrow B, rotate it in the direction of arrow D. In this embodiment, since the melt 170 is installed on the outer circumferential surface of the wheel 160, the wheel 160 is rotated in the direction of arrow C or D by friction between the melt 170 and the surface to be cleaned 10.

When the space below the furniture is cleaned with the extension pipe 200 refracted by the wheel 160, the sealing cover 130 does not directly contact the surface to be cleaned 10. That is, the refracted portion does not directly contact the surface to be cleaned 10. Therefore, the surface to be cleaned 10 and the sealing cover 130 such as a carpet are prevented from being rubbed with each other to damage the surface to be cleaned 10 and the sealing cover 130. In addition, the movement of the suction brush 20 becomes easy. Therefore, the force to push or pull the suction brush 20 of the user is reduced to facilitate the cleaning operation.

The melt 170 is composed of a plurality of cilia and is attached to the outer circumferential surface of the wheel 160 by being bonded or pressed. The melt 170 may further increase the damage preventing effect of the surface to be cleaned 10 such as a carpet. That is, since the soft melt 170 touches the surface to be cleaned 10, the damage of the surface to be cleaned 10 may be further reduced than the wheel 160 directly touches the surface to be cleaned 10.

For reference, reference numeral 30, which is not described, denotes a cleaning main body, reference numeral 40 denotes a flexible hose, and reference numeral 50 denotes an operation unit.

According to the refractive extension tube of the vacuum cleaner by this invention as mentioned above,

First, the user can bend the extension tube with a simple locking button operation without having to bend or lower the posture. Therefore, the lower part of the furniture, such as a bed or sofa, can be comfortably cleaned, thereby increasing user convenience.

Second, when cleaning the general surface to be cleaned, i.e. when the extension tube is not required to bend, the locking projection of the locking button is inserted into the first and second coupling grooves so that the first extension tube and the second extension tube are firmly fastened to each other. Is maintained. Thus, user reliability is increased.

Third, the refraction and fastening maintenance of the first extension tube and the second extension tube consists of the coupling protrusion and the first, second and third coupling grooves only. Therefore, the configuration of the refractive extension tube is simplified and the manufacturing cost is reduced.

Fourth, due to the wheel which can be rolled in contact with the surface to be cleaned and the fusion formed on the outer circumferential surface of the wheel, when cleaning the lower space of the furniture with the refracted extension tube, the refractive portion and the surface to be cleaned are prevented from being rubbed and damaged. The brush moves easily.

While the invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (8)

A first extension tube having a joint part; A second extension tube having a joint accommodation portion into which the joint portion of the first extension tube is inserted; An airtight cover surrounding the first and second extension tubes; And And a locking button installed between the sealing cover and the first extension tube and having at least one engaging protrusion on an outer circumferential surface thereof. At least one coupling groove into which the locking projection of the locking button is selectively inserted is inserted into at least one of the sealing cover and the first or second extension tube so that the first extension tube can be rotated with respect to the second extension tube. Refraction extension tube of the vacuum cleaner, characterized in that each formed. The method of claim 1, And a resilient member provided between the locking button and the first extension tube to elastically press the locking button in a direction away from the first extension tube. The method of claim 2, Refractive extension tube of the vacuum cleaner, characterized in that the sealing cover is formed with a button hole to protrude a portion of the locking button. The method according to any one of claims 1 to 3, And the coupling grooves are spaces formed between the airtight cover and the plurality of protrusions protruding from the first extension tube. The method of claim 4, wherein the coupling groove, And a second coupling groove and a third coupling groove formed at a position corresponding to the first coupling groove on the first extension pipe joint part, the first coupling groove formed on the button hole circumference of the sealing cover. Refraction extension tube of the cleaner. The method of claim 5, wherein the third coupling groove, Refraction extension tube of the vacuum cleaner, characterized in that formed by a plurality of linear projections. The method of claim 1, wherein the sealing cover, And a wheel capable of rolling in contact with the surface to be cleaned. The method of claim 7, wherein Refractive extension tube of the vacuum cleaner, characterized in that the melt is installed on the outer peripheral surface of the wheel.

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